diff --git a/.gitignore b/.gitignore
index bd08361..a3bb30f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 cmake-build-debug
 
+.idea
+
 raytracer
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..fc5d325
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.21)
+project(477_hw2)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+
+add_executable(rasterizer Camera.cpp Camera.h Color.cpp Color.h Vector/Helpers.cpp Vector/Helpers.h Main.cpp Matrix4.cpp Matrix4.h
+        Mesh.cpp Mesh.h Transformation/Rotation.cpp Transformation/Rotation.h Transformation/Scaling.cpp Transformation/Scaling.h Scene.cpp Scene.h tinyxml2.cpp tinyxml2.h
+        Transformation/Translation.cpp Transformation/Translation.h Triangle.cpp Triangle.h Vector/Vec3.cpp Vector/Vec3.h Vector/Vec4.cpp Vector/Vec4.h Transformation/Base.cpp Transformation/Base.h)
+
diff --git a/Camera.cpp b/Camera.cpp
new file mode 100644
index 0000000..1c75a48
--- /dev/null
+++ b/Camera.cpp
@@ -0,0 +1,117 @@
+#include "Camera.h"
+#include <string>
+#include <iostream>
+#include <iomanip>
+
+using namespace std;
+
+Camera::Camera() {}
+
+Camera::Camera(int cameraId,
+               int projectionType,
+               Vec3 pos, Vec3 gaze,
+               Vec3 u, Vec3 v, Vec3 w,
+               double left, double right, double bottom, double top,
+               double near, double far,
+               int horRes, int verRes,
+               string outputFileName) {
+
+    this->cameraId = cameraId;
+    this->projectionType = projectionType;
+    this->pos = pos;
+    this->gaze = gaze;
+    this->u = u;
+    this->v = v;
+    this->w = w;
+    this->left = left;
+    this->right = right;
+    this->bottom = bottom;
+    this->top = top;
+    this->near = near;
+    this->far = far;
+    this->horRes = horRes;
+    this->verRes = verRes;
+    this->outputFileName = outputFileName;
+}
+
+Camera::Camera(const Camera &other) {
+    this->cameraId = other.cameraId;
+    this->projectionType = other.projectionType;
+    this->pos = other.pos;
+    this->gaze = other.gaze;
+    this->u = other.u;
+    this->v = other.v;
+    this->w = other.w;
+    this->left = other.left;
+    this->right = other.right;
+    this->bottom = other.bottom;
+    this->top = other.top;
+    this->near = other.near;
+    this->far = other.far;
+    this->horRes = other.horRes;
+    this->verRes = other.verRes;
+    this->outputFileName = other.outputFileName;
+}
+
+void Camera::computeTransforms() {
+    this->computeCameraTransform();
+    this->computeProjectionTransform();
+    this->computeViewportTransform();
+
+    this->perCamTransform = multiplyMatrixWithMatrix(this->projectionTransform, this->cameraTransform);
+}
+
+void Camera::computeCameraTransform() {
+    double translate[4][4] = {{1, 0, 0, -(this->pos.x)},
+                              {0, 1, 0, -(this->pos.y)},
+                              {0, 0, 1, -(this->pos.z)},
+                              {0, 0, 0, 1}};
+    double rotate[4][4] = {{this->u.x, this->u.y, this->u.z, 0},
+                           {this->v.x, this->v.y, this->v.z, 0},
+                           {this->w.x, this->w.y, this->w.z, 0},
+                           {0,         0,         0,         1}};
+    this->cameraTransform = multiplyMatrixWithMatrix(rotate, translate);
+}
+
+void Camera::computeProjectionTransform() {
+    switch (this->projectionType) {
+        case 0: {
+            double orthographic[4][4] = {{2/(this->right-this->left),0,0,-((this->right+this->left)/(this->right-this->left))},
+                                         {0, 2/(this->top-this->bottom),0,-((this->top+this->bottom)/(this->top-this->bottom))},
+                                         {0,0, -(2/(this->far-this->near)),-((this->far+this->near)/(this->far-this->near))},
+                                         {0,0,0,1}};
+            this->projectionTransform = Matrix4(orthographic);
+            break;
+        }
+        case 1: {
+            double perspective[4][4] = {{(2*this->near)/(this->right-this->left),0,(this->right+this->left)/(this->right-this->left),0},
+                                        {0,(2*this->near)/(this->top-this->bottom),(this->top+this->bottom)/(this->top-this->bottom),0},
+                                        {0,0,-((this->far+this->near)/(this->far-this->near)),-((2*this->far*this->near)/(this->far-this->near))},
+                                        {0,0,-1,0}};
+            this->projectionTransform = Matrix4(perspective);
+            break;
+        }
+    }
+}
+
+void Camera::computeViewportTransform() {
+    double viewport[4][4] = {{this->horRes / 2.0, 0,                  0,   (this->horRes - 1) / 2.0},
+                             {0,                  this->verRes / 2.0, 0,   (this->verRes - 1) / 2.0},
+                             {0,                  0,                  0.5, 0.5},
+                             {0,                  0,                  0,   1}};
+    this->viewportTransform = Matrix4(viewport);
+}
+
+ostream &operator<<(ostream &os, const Camera &c) {
+    const char *camType = c.projectionType ? "perspective" : "orthographic";
+
+    os << fixed << setprecision(6) << "Camera " << c.cameraId << " (" << camType << ") => pos: " << c.pos << " gaze: "
+       << c.gaze << endl
+       << "\tu: " << c.u << " v: " << c.v << " w: " << c.w << endl
+       << fixed << setprecision(3) << "\tleft: " << c.left << " right: " << c.right << " bottom: " << c.bottom
+       << " top: " << c.top << endl
+       << "\tnear: " << c.near << " far: " << c.far << " resolutions: " << c.horRes << "x" << c.verRes << " fileName: "
+       << c.outputFileName;
+
+    return os;
+}
diff --git a/Camera.h b/Camera.h
new file mode 100644
index 0000000..1ae86ad
--- /dev/null
+++ b/Camera.h
@@ -0,0 +1,55 @@
+#ifndef __CAMERA_H__
+#define __CAMERA_H__
+
+#include "Vector/Vec3.h"
+#include "Vector/Helpers.h"
+#include "Matrix4.h"
+#include <string>
+
+using namespace std;
+
+class Camera
+{
+
+public:
+    int cameraId;
+    int projectionType; // 1 for perspective, 0 for orthographic
+    Vec3 pos;
+    Vec3 gaze;
+    Vec3 u;
+    Vec3 v;
+    Vec3 w;
+    double left, right, bottom, top;
+    double near;
+    double far;
+    int horRes;
+    int verRes;
+    string outputFileName;
+
+    Matrix4 cameraTransform;
+    Matrix4 projectionTransform;
+    Matrix4 perCamTransform;
+    Matrix4 viewportTransform;
+
+    Camera();
+
+    Camera(int cameraId,
+           int projectionType,
+           Vec3 pos, Vec3 gaze,
+           Vec3 u, Vec3 v, Vec3 w,
+           double left, double right, double bottom, double top,
+           double near, double far,
+           int horRes, int verRes,
+           string outputFileName);
+
+    Camera(const Camera &other);
+
+    void computeTransforms();
+    void computeCameraTransform();
+    void computeProjectionTransform();
+    void computeViewportTransform();
+
+    friend std::ostream &operator<<(std::ostream &os, const Camera &c);
+};
+
+#endif
\ No newline at end of file
diff --git a/Color.cpp b/Color.cpp
new file mode 100644
index 0000000..fe8efa0
--- /dev/null
+++ b/Color.cpp
@@ -0,0 +1,27 @@
+#include "Color.h"
+#include <iostream>
+#include <iomanip>
+
+using namespace std;
+
+Color::Color() {}
+
+Color::Color(double r, double g, double b)
+{
+    this->r = r;
+    this->g = g;
+    this->b = b;
+}
+
+Color::Color(const Color &other)
+{
+    this->r = other.r;
+    this->g = other.g;
+    this->b = other.b;
+}
+
+ostream& operator<<(ostream& os, const Color& c)
+{
+    os << fixed << setprecision(0) << "rgb(" << c.r << ", " << c.g << ", " << c.b << ")";
+    return os;
+}
diff --git a/Color.h b/Color.h
new file mode 100644
index 0000000..18a569e
--- /dev/null
+++ b/Color.h
@@ -0,0 +1,17 @@
+#ifndef __COLOR_H__
+#define __COLOR_H__
+
+#include <iostream>
+
+class Color
+{
+public:
+    double r, g, b;
+
+    Color();
+    Color(double r, double g, double b);
+    Color(const Color &other);
+    friend std::ostream& operator<<(std::ostream& os, const Color& c);
+};
+
+#endif
\ No newline at end of file
diff --git a/Main.cpp b/Main.cpp
new file mode 100644
index 0000000..a743c26
--- /dev/null
+++ b/Main.cpp
@@ -0,0 +1,45 @@
+#include <iostream>
+#include <string>
+#include <vector>
+#include "Scene.h"
+#include "Matrix4.h"
+#include "Vector/Helpers.h"
+
+using namespace std;
+
+Scene *scene;
+
+int main(int argc, char *argv[])
+{
+    if (argc != 2)
+    {
+        cout << "Please run the rasterizer as:" << endl
+             << "\t./rasterizer <input_file_name>" << endl;
+        return 1;
+    }
+    else
+    {
+        const char *xmlPath = argv[1];
+
+        scene = new Scene(xmlPath);
+
+        for (int i = 0; i < scene->cameras.size(); i++)
+        {
+            // initialize image with basic values
+            scene->initializeImage(scene->cameras[i]);
+
+            // do forward rendering pipeline operations
+            scene->forwardRenderingPipeline(scene->cameras[i]);
+
+            // generate PPM file
+            scene->writeImageToPPMFile(scene->cameras[i]);
+
+            // Converts PPM image in given path to PNG file, by calling ImageMagick's 'convert' command.
+            // Notice that os_type is not given as 1 (Ubuntu) or 2 (Windows), below call doesn't do conversion.
+            // Change os_type to 1 or 2, after being sure that you have ImageMagick installed.
+            scene->convertPPMToPNG(scene->cameras[i]->outputFileName, 99);
+        }
+
+        return 0;
+    }
+}
\ No newline at end of file
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..69824a5
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,2 @@
+all:
+	g++ *.cpp Transformation/*.cpp Vector/*.cpp -o raytracer -std=c++11 -O3
diff --git a/Matrix4.cpp b/Matrix4.cpp
new file mode 100644
index 0000000..4d0354c
--- /dev/null
+++ b/Matrix4.cpp
@@ -0,0 +1,52 @@
+#include "Matrix4.h"
+#include <iostream>
+#include <iomanip>
+
+using namespace std;
+
+Matrix4::Matrix4()
+{
+    for (int i = 0; i < 4; i++)
+    {
+        for (int j = 0; j < 4; j++)
+        {
+            this->val[i][j] = 0;
+        }
+    }
+}
+
+Matrix4::Matrix4(double val[4][4])
+{
+    for (int i = 0; i < 4; i++)
+    {
+        for (int j = 0; j < 4; j++)
+        {
+            this->val[i][j] = val[i][j];
+        }
+    }
+}
+
+Matrix4::Matrix4(const Matrix4 &other)
+{
+    for (int i = 0; i < 4; i++)
+    {
+        for (int j = 0; j < 4; j++)
+        {
+            this->val[i][j] = other.val[i][j];
+        }
+    }
+}
+
+ostream &operator<<(ostream &os, const Matrix4 &m)
+{
+
+    os << fixed << setprecision(6) << "|" << m.val[0][0] << "|" << m.val[0][1] << "|" << m.val[0][2] << "|" << m.val[0][3] << "|"
+       << endl
+       << "|" << m.val[1][0] << "|" << m.val[1][1] << "|" << m.val[1][2] << "|" << m.val[1][3] << "|"
+       << endl
+       << "|" << m.val[2][0] << "|" << m.val[2][1] << "|" << m.val[2][2] << "|" << m.val[2][3] << "|"
+       << endl
+       << "|" << m.val[3][0] << "|" << m.val[3][1] << "|" << m.val[3][2] << "|" << m.val[3][3] << "|";
+
+    return os;
+}
\ No newline at end of file
diff --git a/Matrix4.h b/Matrix4.h
new file mode 100644
index 0000000..1d14958
--- /dev/null
+++ b/Matrix4.h
@@ -0,0 +1,19 @@
+#ifndef __MATRIX4_H__
+#define __MATRIX4_H__
+
+#include <iostream>
+
+using namespace std;
+
+class Matrix4
+{
+public:
+    double val[4][4];
+
+    Matrix4();
+    Matrix4(double val[4][4]);
+    Matrix4(const Matrix4 &other);
+    friend ostream &operator<<(ostream &os, const Matrix4 &m);
+};
+
+#endif
\ No newline at end of file
diff --git a/Mesh.cpp b/Mesh.cpp
new file mode 100644
index 0000000..ee24e59
--- /dev/null
+++ b/Mesh.cpp
@@ -0,0 +1,34 @@
+#include <vector>
+#include "Triangle.h"
+#include "Mesh.h"
+#include <iostream>
+#include <iomanip>
+
+using namespace std;
+
+Mesh::Mesh() {}
+
+// TODO bunu burdan al
+Mesh::Mesh(int meshId, int type, int numberOfTransformations,
+             vector<int> transformationIds,
+             vector<char> transformationTypes,
+             int numberOfTriangles,
+             vector<Triangle> triangles)
+{
+    this->meshId = meshId;
+    this->type = type;
+    this->numberOfTransformations = numberOfTransformations;
+    this->numberOfTriangles = numberOfTriangles;
+
+    this->transformationIds = transformationIds;
+    this->transformationTypes = transformationTypes;
+    this->triangles = triangles;
+}
+
+void Mesh::computeModelingTransform() {
+    Matrix4 modelingMatrix = getIdentityMatrix();
+    for(auto transformation : this->transformations) {
+        modelingMatrix = multiplyMatrixWithMatrix(transformation->matrix, modelingMatrix);
+    }
+    this->modelingTransform = modelingMatrix;
+}
diff --git a/Mesh.h b/Mesh.h
new file mode 100644
index 0000000..e8de16a
--- /dev/null
+++ b/Mesh.h
@@ -0,0 +1,36 @@
+#ifndef __MESH_H__
+#define __MESH_H__
+
+#include <vector>
+#include <iostream>
+#include "Triangle.h"
+#include "Transformation/Base.h"
+
+using namespace std;
+
+class Mesh
+{
+
+public:
+    int meshId;
+    int type; // 0 for wireframe, 1 for solid
+    int numberOfTransformations;
+    vector<int> transformationIds;
+    vector<char> transformationTypes;
+    int numberOfTriangles;
+    vector<Triangle> triangles;
+
+    vector<Base*> transformations;
+    Matrix4 modelingTransform;
+
+    Mesh();
+    Mesh(int meshId, int type, int numberOfTransformations,
+          vector<int> transformationIds,
+          vector<char> transformationTypes,
+          int numberOfTriangles,
+          vector<Triangle> triangles);
+
+    void computeModelingTransform();
+};
+
+#endif
\ No newline at end of file
diff --git a/Scene.cpp b/Scene.cpp
new file mode 100644
index 0000000..ed42908
--- /dev/null
+++ b/Scene.cpp
@@ -0,0 +1,506 @@
+#include <iostream>
+#include <cstdlib>
+#include <cstring>
+#include <fstream>
+#include <cmath>
+
+#include "Scene.h"
+#include "Camera.h"
+#include "Color.h"
+#include "Mesh.h"
+#include "Transformation/Rotation.h"
+#include "Transformation/Scaling.h"
+#include "Transformation/Translation.h"
+#include "Triangle.h"
+#include "Vector/Vec3.h"
+#include "tinyxml2.h"
+#include "Vector/Helpers.h"
+
+using namespace tinyxml2;
+using namespace std;
+
+bool Scene::isBackFace() const {
+    Vec3 v1 = vec4to3(this->vec1);
+    Vec3 v2 = vec4to3(this->vec2);
+    Vec3 v3 = vec4to3(this->vec3);
+    Vec3 normal = normalizeVec3(crossProductVec3(subtractVec3(v2, v1), subtractVec3(v3, v1)));
+    return dotProductVec3(normal, v1) < 0;
+}
+
+static bool lineVisible(double den, double num, double &tE, double &tL) {
+    double t;
+    if (den > 0) {
+        t = num / den;
+        if (t > tL) {
+            return false;
+        }
+        if (t > tE) {
+            tE = t;
+        }
+    } else if (den < 0) {
+        t = num / den;
+        if (t < tE) {
+            return false;
+        }
+        if (t < tL) {
+            tL = t;
+        }
+    } else if (num > 0) {
+        return false;
+    }
+    return true;
+}
+
+bool Scene::clipLine(Vec4 &v0, Vec4 &v1) {
+    double dX = v1.x - v0.x, dY = v1.y - v0.y, dZ = v1.z - v0.z;
+    Color dC = Color(v1.color.r - v0.color.r, v1.color.g - v0.color.g, v1.color.b - v0.color.b);
+    double minX = 0, minY = 0, minZ = 0, maxX = this->currentCamera->horRes - 1, maxY =
+            this->currentCamera->verRes - 1, maxZ = this->currentCamera->far - 1;
+    double tE = 0, tL = 1;
+    bool visible = false;
+    if (lineVisible(dX, minX - v0.x, tE, tL) && lineVisible(-dX, v0.x - maxX, tE, tL) &&
+        lineVisible(dY, minY - v0.y, tE, tL) && lineVisible(-dY, v0.y - maxY, tE, tL) &&
+        lineVisible(dZ, minZ - v0.z, tE, tL) && lineVisible(-dZ, v0.z - maxZ, tE, tL)) {
+        visible = true;
+        if (tL < 1) {
+            v1.x = v0.x + dX * tL;
+            v1.y = v0.y + dY * tL;
+            v1.z = v0.z + dZ * tL;
+            v1.color = Color(v0.color.r + dC.r * tL, v0.color.g + dC.g * tL, v0.color.b + dC.b * tL);
+        }
+        if (tE > 0) {
+            v0.x = v0.x + dX * tE;
+            v0.y = v0.y + dY * tE;
+            v0.z = v0.z + dZ * tE;
+            v0.color = Color(v0.color.r + dC.r * tE, v0.color.g + dC.g * tE, v0.color.b + dC.b * tE);
+        }
+    }
+    return visible;
+}
+
+void Scene::wireRasterization(Vec4 v0, Vec4 v1) {
+    if (this->clipLine(v0, v1)) {
+        double m = (v1.y - v0.y) / (v1.x - v0.x);
+        if (m > 1 || m < -1) {
+            double dummy0 = v0.x, dummy1 = v1.x;
+            v0.x = v0.y;
+            v0.y = dummy0;
+            v1.x = v1.y;
+            v1.y = dummy1;
+        }
+        if (v1.x < v0.x) {
+            swap(v0, v1);
+        }
+        int increment = 1;
+        if (v1.y < v0.y) {
+            increment = -1;
+        }
+        double diffX = v1.x - v0.x, diffY = v0.y - v1.y;
+        int y = (int) v0.y;
+        int d = (int) (diffY + (increment * 0.5 * diffX));
+        Color c = Color(v0.color.r,
+                        v0.color.g,
+                        v0.color.b);
+        Color dc = multiplyColorWithScalar(subtractColor(v1.color, v0.color), 1 / diffX);
+        if (m <= 1 && m >= -1) {
+            for (int x = (int) v0.x; x <= (int) v1.x; x++) {
+                this->image[x][y] = Color(int(c.r + 0.5),
+                                          int(c.g + 0.5),
+                                          int(c.b + 0.5));
+                if (d * increment < 0) {
+                    y += increment;
+                    d += (int) (diffY + (increment * diffX));
+                } else
+                    d += (int) diffY;
+                c = Color(c.r + dc.r,
+                          c.g + dc.g,
+                          c.b + dc.b);
+            }
+        } else {
+            for (int x = (int) v0.x; x <= (int) v1.x; x++) {
+                this->image[y][x] = Color(int(c.r + 0.5),
+                                          int(c.g + 0.5),
+                                          int(c.b + 0.5));
+                if (d * increment < 0) {
+                    y += increment;
+                    d += (int) (diffY + (increment * diffX));
+                } else
+                    d += (int) diffY;
+                c = Color(c.r + dc.r,
+                          c.g + dc.g,
+                          c.b + dc.b);
+            }
+        }
+    }
+}
+
+static double f(double x, double y, Vec4 &a, Vec4 &b) {
+    return x * (a.y - b.y) + y * (b.x - a.x) + a.x * b.y - a.y * b.x;
+}
+
+void Scene::solidRasterization() {
+    int minX = min(min(this->vec1.x, this->vec2.x), this->vec3.x);
+    int maxX = max(max(this->vec1.x, this->vec2.x), this->vec3.x);
+
+    int minY = min(min(this->vec1.y, this->vec2.y), this->vec3.y);
+    int maxY = max(max(this->vec1.y, this->vec2.y), this->vec3.y);
+
+    minX = minX > 0 ? (minX < this->currentCamera->horRes ? minX : this->currentCamera->horRes - 1) : 0;
+    maxX = maxX > 0 ? (maxX < this->currentCamera->horRes ? maxX : this->currentCamera->horRes - 1) : 0;
+    minY = minY > 0 ? (minY < this->currentCamera->verRes ? minY : this->currentCamera->verRes - 1) : 0;
+    maxY = maxY > 0 ? (maxY < this->currentCamera->verRes ? maxY : this->currentCamera->verRes - 1) : 0;
+
+    for (int y = minY; y <= maxY; y++) {
+        for (int x = minX; x <= maxX; x++) {
+            double alpha = f(x, y, this->vec2, this->vec3) / f(this->vec1.x, this->vec1.y, this->vec2, this->vec3);
+            double beta = f(x, y, this->vec3, this->vec1) / f(this->vec2.x, this->vec2.y, this->vec3, this->vec1);
+            double gamma = f(x, y, this->vec1, this->vec2) / f(this->vec3.x, this->vec3.y, this->vec1, this->vec2);
+
+            if (alpha >= 0 && beta >= 0 && gamma >= 0) {
+                this->image[x][y] = Color(
+                        int(alpha * this->vec1.color.r + beta * this->vec2.color.r + gamma * this->vec3.color.r + 0.5),
+                        int(alpha * this->vec1.color.g + beta * this->vec2.color.g + gamma * this->vec3.color.g + 0.5),
+                        int(alpha * this->vec1.color.b + beta * this->vec2.color.b + gamma * this->vec3.color.b + 0.5));
+            }
+        }
+    }
+}
+
+void Scene::forwardRenderingPipeline(Camera *camera) {
+    this->currentCamera = camera;
+    Matrix4 perCamTransform = camera->perCamTransform;
+    Matrix4 viewportTransform = camera->viewportTransform;
+
+    for (auto mesh: this->meshes) {
+        Matrix4 perCamModTransform = multiplyMatrixWithMatrix(perCamTransform, mesh->modelingTransform);
+
+        for (auto triangle: mesh->triangles) {
+            Vec4 perCamModVertex1 = multiplyMatrixWithVec4(perCamModTransform, Vec4(*triangle.getFirstVertex()));
+            Vec4 perCamModVertex2 = multiplyMatrixWithVec4(perCamModTransform, Vec4(*triangle.getSecondVertex()));
+            Vec4 perCamModVertex3 = multiplyMatrixWithVec4(perCamModTransform, Vec4(*triangle.getThirdVertex()));
+
+            perCamModVertex1 = perCamModVertex1 / perCamModVertex1.t;
+            perCamModVertex2 = perCamModVertex2 / perCamModVertex2.t;
+            perCamModVertex3 = perCamModVertex3 / perCamModVertex3.t;
+
+            this->vec1 = multiplyMatrixWithVec4(viewportTransform, perCamModVertex1);
+            this->vec2 = multiplyMatrixWithVec4(viewportTransform, perCamModVertex2);
+            this->vec3 = multiplyMatrixWithVec4(viewportTransform, perCamModVertex3);
+
+            if (this->cullingEnabled && ((this->currentCamera->projectionType && isBackFace()) ||
+                                         (!this->currentCamera->projectionType && !isBackFace()))) {
+                continue;
+            }
+
+            switch (mesh->type) {
+                case 0:
+                    this->wireRasterization(vec1, vec2);
+                    this->wireRasterization(vec2, vec3);
+                    this->wireRasterization(vec3, vec1);
+                    break;
+                case 1:
+                    this->solidRasterization();
+                    break;
+            }
+        }
+    }
+}
+
+Scene::Scene(const char *xmlPath) {
+    const char *str;
+    XMLDocument xmlDoc;
+    XMLElement *pElement;
+
+    xmlDoc.LoadFile(xmlPath);
+
+    XMLNode *pRoot = xmlDoc.FirstChild();
+
+    // read background color
+    pElement = pRoot->FirstChildElement("BackgroundColor");
+    str = pElement->GetText();
+    sscanf(str, "%lf %lf %lf", &backgroundColor.r, &backgroundColor.g, &backgroundColor.b);
+
+    // read culling
+    pElement = pRoot->FirstChildElement("Culling");
+    if (pElement != NULL) {
+        str = pElement->GetText();
+
+        if (strcmp(str, "enabled") == 0) {
+            cullingEnabled = true;
+        } else {
+            cullingEnabled = false;
+        }
+    }
+
+    // read cameras
+    pElement = pRoot->FirstChildElement("Cameras");
+    XMLElement *pCamera = pElement->FirstChildElement("Camera");
+    XMLElement *camElement;
+    while (pCamera != NULL) {
+        Camera *cam = new Camera();
+
+        pCamera->QueryIntAttribute("id", &cam->cameraId);
+
+        // read projection type
+        str = pCamera->Attribute("type");
+
+        if (strcmp(str, "orthographic") == 0) {
+            cam->projectionType = 0;
+        } else {
+            cam->projectionType = 1;
+        }
+
+        camElement = pCamera->FirstChildElement("Position");
+        str = camElement->GetText();
+        sscanf(str, "%lf %lf %lf", &cam->pos.x, &cam->pos.y, &cam->pos.z);
+
+        camElement = pCamera->FirstChildElement("Gaze");
+        str = camElement->GetText();
+        sscanf(str, "%lf %lf %lf", &cam->gaze.x, &cam->gaze.y, &cam->gaze.z);
+
+        camElement = pCamera->FirstChildElement("Up");
+        str = camElement->GetText();
+        sscanf(str, "%lf %lf %lf", &cam->v.x, &cam->v.y, &cam->v.z);
+
+        cam->gaze = normalizeVec3(cam->gaze);
+        cam->u = crossProductVec3(cam->gaze, cam->v);
+        cam->u = normalizeVec3(cam->u);
+
+        cam->w = inverseVec3(cam->gaze);
+        cam->v = crossProductVec3(cam->u, cam->gaze);
+        cam->v = normalizeVec3(cam->v);
+
+        camElement = pCamera->FirstChildElement("ImagePlane");
+        str = camElement->GetText();
+        sscanf(str, "%lf %lf %lf %lf %lf %lf %d %d",
+               &cam->left, &cam->right, &cam->bottom, &cam->top,
+               &cam->near, &cam->far, &cam->horRes, &cam->verRes);
+
+        camElement = pCamera->FirstChildElement("OutputName");
+        str = camElement->GetText();
+        cam->outputFileName = string(str);
+
+        cam->computeTransforms();
+
+        cameras.push_back(cam);
+
+        pCamera = pCamera->NextSiblingElement("Camera");
+    }
+
+    // read vertices
+    pElement = pRoot->FirstChildElement("Vertices");
+    XMLElement *pVertex = pElement->FirstChildElement("Vertex");
+
+    while (pVertex != NULL) {
+        Vec3 *vertex = new Vec3();
+        Color *color = new Color();
+
+        str = pVertex->Attribute("position");
+        sscanf(str, "%lf %lf %lf", &vertex->x, &vertex->y, &vertex->z);
+
+        str = pVertex->Attribute("color");
+        sscanf(str, "%lf %lf %lf", &color->r, &color->g, &color->b);
+
+        vertex->color = *color;
+
+        vertices.push_back(vertex);
+        colorsOfVertices.push_back(color);
+
+        pVertex = pVertex->NextSiblingElement("Vertex");
+    }
+
+    // read translations
+    pElement = pRoot->FirstChildElement("Translations");
+    XMLElement *pTranslation = pElement->FirstChildElement("Translation");
+    while (pTranslation != NULL) {
+        Translation *translation = new Translation();
+
+        pTranslation->QueryIntAttribute("id", &translation->id);
+
+        str = pTranslation->Attribute("value");
+        sscanf(str, "%lf %lf %lf", &translation->x, &translation->y, &translation->z);
+
+        translation->ComputeMatrix();
+        translations.push_back(translation);
+
+        pTranslation = pTranslation->NextSiblingElement("Translation");
+    }
+
+    // read scalings
+    pElement = pRoot->FirstChildElement("Scalings");
+    XMLElement *pScaling = pElement->FirstChildElement("Scaling");
+    while (pScaling != NULL) {
+        Scaling *scaling = new Scaling();
+
+        pScaling->QueryIntAttribute("id", &scaling->id);
+        str = pScaling->Attribute("value");
+        sscanf(str, "%lf %lf %lf", &scaling->x, &scaling->y, &scaling->z);
+
+        scaling->ComputeMatrix();
+        scalings.push_back(scaling);
+
+        pScaling = pScaling->NextSiblingElement("Scaling");
+    }
+
+    // read rotations
+    pElement = pRoot->FirstChildElement("Rotations");
+    XMLElement *pRotation = pElement->FirstChildElement("Rotation");
+    while (pRotation != NULL) {
+        Rotation *rotation = new Rotation();
+
+        pRotation->QueryIntAttribute("id", &rotation->id);
+        str = pRotation->Attribute("value");
+        sscanf(str, "%lf %lf %lf %lf", &rotation->angle, &rotation->x, &rotation->y, &rotation->z);
+
+        rotation->ComputeMatrix();
+        rotations.push_back(rotation);
+
+        pRotation = pRotation->NextSiblingElement("Rotation");
+    }
+
+    // read meshes
+    pElement = pRoot->FirstChildElement("Meshes");
+
+    XMLElement *pMesh = pElement->FirstChildElement("Mesh");
+    XMLElement *meshElement;
+    while (pMesh != NULL) {
+        Mesh *mesh = new Mesh();
+
+        pMesh->QueryIntAttribute("id", &mesh->meshId);
+
+        // read projection type
+        str = pMesh->Attribute("type");
+
+        if (strcmp(str, "wireframe") == 0) {
+            mesh->type = 0;
+        } else {
+            mesh->type = 1;
+        }
+
+        // read mesh transformations
+        XMLElement *pTransformations = pMesh->FirstChildElement("Transformations");
+        XMLElement *pTransformation = pTransformations->FirstChildElement("Transformation");
+
+        while (pTransformation != NULL) {
+            char transformationType;
+            int transformationId;
+
+            str = pTransformation->GetText();
+            sscanf(str, "%c %d", &transformationType, &transformationId);
+
+            switch (transformationType) {
+                case 't':
+                    mesh->transformations.push_back(this->translations[transformationId - 1]);
+                    break;
+                case 'r':
+                    mesh->transformations.push_back(this->rotations[transformationId - 1]);
+                    break;
+                case 's':
+                    mesh->transformations.push_back(this->scalings[transformationId - 1]);
+                    break;
+            }
+
+            mesh->transformationTypes.push_back(transformationType);
+            mesh->transformationIds.push_back(transformationId);
+
+            pTransformation = pTransformation->NextSiblingElement("Transformation");
+        }
+
+        mesh->numberOfTransformations = mesh->transformationIds.size();
+
+        // read mesh faces
+        char *row;
+        char *clone_str;
+        int v1, v2, v3;
+        XMLElement *pFaces = pMesh->FirstChildElement("Faces");
+        str = pFaces->GetText();
+        clone_str = strdup(str);
+
+        row = strtok(clone_str, "\n");
+        while (row != NULL) {
+            int result = sscanf(row, "%d %d %d", &v1, &v2, &v3);
+
+            if (result != EOF) {
+                mesh->triangles.push_back(
+                        Triangle(this->vertices[v1 - 1], this->vertices[v2 - 1], this->vertices[v3 - 1]));
+            }
+            row = strtok(NULL, "\n");
+        }
+        mesh->numberOfTriangles = mesh->triangles.size();
+        mesh->computeModelingTransform();
+        meshes.push_back(mesh);
+
+        pMesh = pMesh->NextSiblingElement("Mesh");
+    }
+}
+
+void Scene::initializeImage(Camera *camera) {
+    if (this->image.empty()) {
+        for (int i = 0; i < camera->horRes; i++) {
+            vector<Color> rowOfColors;
+
+            for (int j = 0; j < camera->verRes; j++) {
+                rowOfColors.push_back(this->backgroundColor);
+            }
+
+            this->image.push_back(rowOfColors);
+        }
+    } else {
+        for (int i = 0; i < camera->horRes; i++) {
+            for (int j = 0; j < camera->verRes; j++) {
+                this->image[i][j].r = this->backgroundColor.r;
+                this->image[i][j].g = this->backgroundColor.g;
+                this->image[i][j].b = this->backgroundColor.b;
+            }
+        }
+    }
+}
+
+int Scene::makeBetweenZeroAnd255(double value) {
+    if (value >= 255.0)
+        return 255;
+    if (value <= 0.0)
+        return 0;
+    return (int) (value);
+}
+
+void Scene::writeImageToPPMFile(Camera *camera) {
+    ofstream fout;
+
+    fout.open(camera->outputFileName.c_str());
+
+    fout << "P3" << endl;
+    fout << "# " << camera->outputFileName << endl;
+    fout << camera->horRes << " " << camera->verRes << endl;
+    fout << "255" << endl;
+
+    for (int j = camera->verRes - 1; j >= 0; j--) {
+        for (int i = 0; i < camera->horRes; i++) {
+            fout << makeBetweenZeroAnd255(this->image[i][j].r) << " "
+                 << makeBetweenZeroAnd255(this->image[i][j].g) << " "
+                 << makeBetweenZeroAnd255(this->image[i][j].b) << " ";
+        }
+        fout << endl;
+    }
+    fout.close();
+}
+
+void Scene::convertPPMToPNG(string ppmFileName, int osType) {
+    string command;
+
+    // call command on Ubuntu
+    if (osType == 1) {
+        command = "convert " + ppmFileName + " " + ppmFileName + ".png";
+        system(command.c_str());
+    }
+
+        // call command on Windows
+    else if (osType == 2) {
+        command = "magick convert " + ppmFileName + " " + ppmFileName + ".png";
+        system(command.c_str());
+    }
+
+        // default action - don't do conversion
+    else {
+    }
+}
diff --git a/Scene.h b/Scene.h
new file mode 100644
index 0000000..806b11b
--- /dev/null
+++ b/Scene.h
@@ -0,0 +1,61 @@
+#ifndef _SCENE_H_
+#define _SCENE_H_
+
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include "Camera.h"
+#include "Color.h"
+#include "Mesh.h"
+#include "Transformation/Rotation.h"
+#include "Transformation/Scaling.h"
+#include "Transformation/Translation.h"
+#include "Triangle.h"
+#include "Vector/Vec3.h"
+#include "Vector/Vec4.h"
+
+using namespace std;
+
+class Scene {
+public:
+    Color backgroundColor;
+    bool cullingEnabled;
+
+    vector<vector<Color> > image;
+    vector<Camera *> cameras;
+    vector<Vec3 *> vertices;
+    vector<Color *> colorsOfVertices;
+    vector<Scaling *> scalings;
+    vector<Rotation *> rotations;
+    vector<Translation *> translations;
+    vector<Mesh *> meshes;
+
+    Camera *currentCamera;
+    Vec4 vec1, vec2, vec3;
+
+    Scene(const char *xmlPath);
+
+    void initializeImage(Camera *camera);
+
+    void forwardRenderingPipeline(Camera *camera);
+
+    int makeBetweenZeroAnd255(double value);
+
+    void writeImageToPPMFile(Camera *camera);
+
+    void convertPPMToPNG(string ppmFileName, int osType);
+
+    bool isBackFace() const;
+
+    bool clipLine(Vec4 &v0, Vec4 &v1);
+
+    void wireRasterization(Vec4 v0, Vec4 v1);
+
+    void solidRasterization();
+};
+
+#endif
diff --git a/Transformation/Base.cpp b/Transformation/Base.cpp
new file mode 100644
index 0000000..7bb4f83
--- /dev/null
+++ b/Transformation/Base.cpp
@@ -0,0 +1,23 @@
+#include "Base.h"
+
+Base::Base(double placeholder) {
+    this->id = -1;
+    this->x = placeholder;
+    this->y = placeholder;
+    this->z = placeholder;
+}
+
+Base::Base(int id, double x, double y, double z)
+{
+    this->id = id;
+    this->x = x;
+    this->y = y;
+    this->z = z;
+}
+
+std::ostream &operator<<(std::ostream &os, const Base &t)
+{
+    os << std::fixed << std::setprecision(3) << "Scaling " << t.id << " => [" << t.x << ", " << t.y << ", " << t.z << "]";
+
+    return os;
+}
\ No newline at end of file
diff --git a/Transformation/Base.h b/Transformation/Base.h
new file mode 100644
index 0000000..81f6633
--- /dev/null
+++ b/Transformation/Base.h
@@ -0,0 +1,22 @@
+#ifndef INC_477_HW2_BASE_H
+#define INC_477_HW2_BASE_H
+
+#include <iostream>
+#include <iomanip>
+#include "../Vector/Vec3.h"
+#include "../Vector/Helpers.h"
+#include "../Matrix4.h"
+
+class Base {
+public:
+    int id;
+    double x, y, z;
+    Matrix4 matrix;
+
+    explicit Base(double);
+    Base(int, double, double, double);
+    virtual void ComputeMatrix() = 0;
+    friend std::ostream &operator<<(std::ostream&, const Base&);
+};
+
+#endif //INC_477_HW2_BASE_H
\ No newline at end of file
diff --git a/Transformation/Rotation.cpp b/Transformation/Rotation.cpp
new file mode 100644
index 0000000..08a53e2
--- /dev/null
+++ b/Transformation/Rotation.cpp
@@ -0,0 +1,66 @@
+#include "Rotation.h"
+
+Rotation::Rotation() : Base(0) {
+    this->angle = 0;
+}
+
+Rotation::Rotation(int id, double angle, double x, double y, double z) : Base(id, x, y, z) {
+    this->angle = angle;
+    Vec3 u = Vec3(x, y, z, Color()), v, w;
+    double minComp = std::min(std::min(abs(x), abs(y)), abs(z));
+    if (minComp == abs(x))
+        v = Vec3(0, -1 * z, y, Color());
+    else if (minComp == abs(y))
+        v = Vec3(-1 * z, 0, x, Color());
+    else if (minComp == abs(z))
+        v = Vec3(-1 * y, x, 0, Color());
+    w = crossProductVec3(u, v);
+    v = normalizeVec3(v);
+    w = normalizeVec3(w);
+    double translate[4][4] = {{u.x, u.y, u.z, 0},
+                              {v.x, v.y, v.z, 0},
+                              {w.x, w.y, w.z, 0},
+                              {0,   0,   0,   1}};
+    double revert[4][4] = {{u.x, v.x, w.x, 0},
+                           {u.y, v.y, w.y, 0},
+                           {u.z, v.z, w.z, 0},
+                           {0,   0,   0,   1}};
+    double rotate[4][4] = {{1, 0,                             0,                                    0},
+                           {0, cos(this->angle * M_PI / 180), (-1) * sin(this->angle * M_PI / 180), 0},
+                           {0, sin(this->angle * M_PI / 180), cos(this->angle * M_PI / 180),        0},
+                           {0, 0,                             0,                                    1}};
+    this->matrix = multiplyMatrixWithMatrix(revert, multiplyMatrixWithMatrix(rotate, translate));
+}
+
+void Rotation::ComputeMatrix() {
+    Vec3 u = Vec3(x, y, z, Color()), v, w;
+    double minComp = std::min(std::min(abs(x), abs(y)), abs(z));
+    if (minComp == abs(x))
+        v = Vec3(0, -1 * z, y, Color());
+    else if (minComp == abs(y))
+        v = Vec3(-1 * z, 0, x, Color());
+    else if (minComp == abs(z))
+        v = Vec3(-1 * y, x, 0, Color());
+    w = crossProductVec3(u, v);
+    v = normalizeVec3(v);
+    w = normalizeVec3(w);
+    double translate[4][4] = {{u.x, u.y, u.z, 0},
+                              {v.x, v.y, v.z, 0},
+                              {w.x, w.y, w.z, 0},
+                              {0,   0,   0,   1}};
+    double revert[4][4] = {{u.x, v.x, w.x, 0},
+                           {u.y, v.y, w.y, 0},
+                           {u.z, v.z, w.z, 0},
+                           {0,   0,   0,   1}};
+    double rotate[4][4] = {{1, 0,                             0,                                    0},
+                           {0, cos(this->angle * M_PI / 180), (-1) * sin(this->angle * M_PI / 180), 0},
+                           {0, sin(this->angle * M_PI / 180), cos(this->angle * M_PI / 180),        0},
+                           {0, 0,                             0,                                    1}};
+    this->matrix = multiplyMatrixWithMatrix(revert, multiplyMatrixWithMatrix(rotate, translate));
+}
+
+ostream &operator<<(ostream &os, const Rotation &r) {
+    os << fixed << setprecision(3) << "Rotation " << r.id << " => [angle=" << r.angle << ", " << r.x << ", " << r.y
+       << ", " << r.z << "]";
+    return os;
+}
diff --git a/Transformation/Rotation.h b/Transformation/Rotation.h
new file mode 100644
index 0000000..cb16954
--- /dev/null
+++ b/Transformation/Rotation.h
@@ -0,0 +1,18 @@
+#ifndef __ROTATION_H__
+#define __ROTATION_H__
+
+#include <math.h>
+#include "Base.h"
+
+class Rotation : public Base {
+public:
+    double angle;
+
+    Rotation();
+    Rotation(int, double, double, double, double);
+    void ComputeMatrix() override;
+
+    friend std::ostream &operator<<(std::ostream&, const Rotation&);
+};
+
+#endif
\ No newline at end of file
diff --git a/Transformation/Scaling.cpp b/Transformation/Scaling.cpp
new file mode 100644
index 0000000..f770ff1
--- /dev/null
+++ b/Transformation/Scaling.cpp
@@ -0,0 +1,20 @@
+#include "Scaling.h"
+
+Scaling::Scaling() : Base(1) {
+}
+
+Scaling::Scaling(int id, double x, double y, double z) : Base(id, x, y, z) {
+    double val[4][4] = {{x, 0, 0, 0},
+                        {0, y, 0, 0},
+                        {0, 0, z, 0},
+                        {0, 0, 0, 1}};
+    this->matrix = Matrix4(val);
+}
+
+void Scaling::ComputeMatrix() {
+    double val[4][4] = {{this->x, 0, 0, 0},
+                        {0, this->y, 0, 0},
+                        {0, 0, this->z, 0},
+                        {0, 0, 0, 1}};
+    this->matrix = Matrix4(val);
+}
diff --git a/Transformation/Scaling.h b/Transformation/Scaling.h
new file mode 100644
index 0000000..201c30b
--- /dev/null
+++ b/Transformation/Scaling.h
@@ -0,0 +1,13 @@
+#ifndef __SCALING_H__
+#define __SCALING_H__
+
+#include "Base.h"
+
+class Scaling : public Base {
+public:
+    Scaling();
+    Scaling(int, double, double, double);
+    void ComputeMatrix() override;
+};
+
+#endif
\ No newline at end of file
diff --git a/Transformation/Translation.cpp b/Transformation/Translation.cpp
new file mode 100644
index 0000000..0b38210
--- /dev/null
+++ b/Transformation/Translation.cpp
@@ -0,0 +1,22 @@
+#include "Translation.h"
+
+Translation::Translation() : Base(0) {
+}
+
+Translation::Translation(int id, double x, double y, double z) : Base(id, x, y, z) {
+    double val[4][4] = {{1, 0, 0, x},
+                        {0, 1, 0, y},
+                        {0, 0, 1, z},
+                        {0, 0, 0, 1}};
+    this->matrix = Matrix4(val);
+}
+
+void Translation::ComputeMatrix() {
+    double val[4][4] = {{1, 0, 0, this->x},
+                       {0, 1, 0, this->y},
+                       {0, 0, 1, this->z},
+                       {0, 0, 0, 1}};
+    this->matrix = Matrix4(val);
+}
+
+
diff --git a/Transformation/Translation.h b/Transformation/Translation.h
new file mode 100644
index 0000000..4533d7b
--- /dev/null
+++ b/Transformation/Translation.h
@@ -0,0 +1,13 @@
+#ifndef __TRANSLATION_H__
+#define __TRANSLATION_H__
+
+#include "Base.h"
+
+class Translation : public Base {
+public:
+    Translation();
+    Translation(int, double, double, double);
+    void ComputeMatrix() override;
+};
+
+#endif
\ No newline at end of file
diff --git a/Triangle.cpp b/Triangle.cpp
new file mode 100644
index 0000000..75a9954
--- /dev/null
+++ b/Triangle.cpp
@@ -0,0 +1,37 @@
+#include "Triangle.h"
+
+Triangle::Triangle() {
+    this->vertex[0] = nullptr;
+    this->vertex[1] = nullptr;
+    this->vertex[2] = nullptr;
+}
+
+Triangle::Triangle(Vec3 *v1, Vec3 *v2, Vec3 *v3)
+{
+    this->vertex[0] = v1;
+    this->vertex[1] = v2;
+    this->vertex[2] = v3;
+}
+
+Triangle::Triangle(const Triangle &other)
+{
+    this->vertex[0] = other.vertex[0];
+    this->vertex[1] = other.vertex[1];
+    this->vertex[2] = other.vertex[2];
+}
+
+// getters
+Vec3* Triangle::getFirstVertex()
+{
+    return this->vertex[0];
+}
+
+Vec3* Triangle::getSecondVertex()
+{
+    return this->vertex[1];
+}
+
+Vec3* Triangle::getThirdVertex()
+{
+    return this->vertex[2];
+}
diff --git a/Triangle.h b/Triangle.h
new file mode 100644
index 0000000..3a63267
--- /dev/null
+++ b/Triangle.h
@@ -0,0 +1,21 @@
+#ifndef __TRIANGLE_H__
+#define __TRIANGLE_H__
+
+#include "Vector/Vec3.h"
+
+class Triangle
+{
+public:
+    Vec3* vertex[3];
+
+    Triangle();
+    Triangle(Vec3 *v1, Vec3 *v2, Vec3 *v3);
+    Triangle(const Triangle &other);
+
+    Vec3* getFirstVertex();
+    Vec3* getSecondVertex();
+    Vec3* getThirdVertex();
+};
+
+
+#endif
\ No newline at end of file
diff --git a/Vector/Helpers.cpp b/Vector/Helpers.cpp
new file mode 100644
index 0000000..f08bd0e
--- /dev/null
+++ b/Vector/Helpers.cpp
@@ -0,0 +1,234 @@
+#include <iostream>
+#include <cmath>
+#include "Helpers.h"
+#include "../Matrix4.h"
+#include "Vec3.h"
+#include "Vec4.h"
+
+using namespace std;
+
+Vec3 vec4to3(Vec4 a) {
+    Vec3 result;
+
+    result.x = a.x;
+    result.y = a.y;
+    result.z = a.z;
+    result.color = Color(a.color);
+
+    return result;
+}
+/*
+ * Calculate cross product of vec3 a, vec3 b and return resulting vec3.
+ */
+Vec3 crossProductVec3(Vec3 a, Vec3 b)
+{
+    Vec3 result;
+
+    result.x = a.y * b.z - b.y * a.z;
+    result.y = b.x * a.z - a.x * b.z;
+    result.z = a.x * b.y - b.x * a.y;
+
+    return result;
+}
+
+/*
+ * Calculate dot product of vec3 a, vec3 b and return resulting value.
+ */
+double dotProductVec3(Vec3 a, Vec3 b)
+{
+    return a.x * b.x + a.y * b.y + a.z * b.z;
+}
+
+/*
+ * Find length (|v|) of vec3 v.
+ */
+double magnitudeOfVec3(Vec3 v)
+{
+    return sqrt(v.x * v.x + v.y * v.y + v.z * v.z);
+}
+
+/*
+ * Normalize the vec3 to make it unit vec3.
+ */
+Vec3 normalizeVec3(Vec3 v)
+{
+    Vec3 result;
+    double d;
+
+    d = magnitudeOfVec3(v);
+    result.x = v.x / d;
+    result.y = v.y / d;
+    result.z = v.z / d;
+
+    return result;
+}
+
+/*
+ * Return -v (inverse of vec3 v)
+ */
+Vec3 inverseVec3(Vec3 v)
+{
+    Vec3 result;
+    result.x = -v.x;
+    result.y = -v.y;
+    result.z = -v.z;
+
+    return result;
+}
+
+/*
+ * Add vec3 a to vec3 b and return resulting vec3 (a+b).
+ */
+Vec3 addVec3(Vec3 a, Vec3 b)
+{
+    Vec3 result;
+    result.x = a.x + b.x;
+    result.y = a.y + b.y;
+    result.z = a.z + b.z;
+
+    return result;
+}
+
+/*
+ * Subtract vec3 b from vec3 a and return resulting vec3 (a-b).
+ */
+Vec3 subtractVec3(Vec3 a, Vec3 b)
+{
+    Vec3 result;
+    result.x = a.x - b.x;
+    result.y = a.y - b.y;
+    result.z = a.z - b.z;
+
+    return result;
+}
+
+Color subtractColor(Color a, Color b)
+{
+    Color result;
+    result.r = a.r - b.r;
+    result.g = a.g - b.g;
+    result.b = a.b - b.b;
+
+    return result;
+}
+
+/*
+ * Multiply each element of vec3 with scalar.
+ */
+Vec3 multiplyVec3WithScalar(Vec3 v, double c)
+{
+    Vec3 result;
+    result.x = v.x * c;
+    result.y = v.y * c;
+    result.z = v.z * c;
+
+    return result;
+}
+
+Color multiplyColorWithScalar(Color v, double c)
+{
+    Color result;
+    result.r = v.r * c;
+    result.g = v.g * c;
+    result.b = v.b * c;
+
+    return result;
+}
+
+/*
+ * Prints elements in a vec3. Can be used for debugging purposes.
+ */
+void printVec3(Vec3 v)
+{
+    cout << "(" << v.x << "," << v.y << "," << v.z << ")" << endl;
+}
+
+/*
+ * Check whether vec3 a and vec3 b are equal.
+ * In case of equality, returns 1.
+ * Otherwise, returns 0.
+ */
+int areEqualVec3(Vec3 a, Vec3 b)
+{
+
+    /* if x difference, y difference and z difference is smaller than threshold, then they are equal */
+    if ((ABS((a.x - b.x)) < EPSILON) && (ABS((a.y - b.y)) < EPSILON) && (ABS((a.z - b.z)) < EPSILON))
+    {
+        return 1;
+    }
+    else
+    {
+        return 0;
+    }
+}
+
+/*
+ * Returns an identity matrix (values on the diagonal are 1, others are 0).
+*/
+Matrix4 getIdentityMatrix()
+{
+    Matrix4 result;
+
+    for (int i = 0; i < 4; i++)
+    {
+        for (int j = 0; j < 4; j++)
+        {
+            if (i == j)
+            {
+                result.val[i][j] = 1.0;
+            }
+            else
+            {
+                result.val[i][j] = 0.0;
+            }
+        }
+    }
+
+    return result;
+}
+
+/*
+ * Multiply matrices m1 (Matrix4) and m2 (Matrix4) and return the result matrix r (Matrix4).
+ */
+Matrix4 multiplyMatrixWithMatrix(Matrix4 m1, Matrix4 m2)
+{
+    Matrix4 result;
+    double total;
+
+    for (int i = 0; i < 4; i++)
+    {
+        for (int j = 0; j < 4; j++)
+        {
+            total = 0;
+            for (int k = 0; k < 4; k++)
+            {
+                total += m1.val[i][k] * m2.val[k][j];
+            }
+
+            result.val[i][j] = total;
+        }
+    }
+
+    return result;
+}
+
+/*
+ * Multiply matrix m (Matrix4) with vector v (vec4) and store the result in vector r (vec4).
+ */
+Vec4 multiplyMatrixWithVec4(Matrix4 m, Vec4 v)
+{
+    double values[4];
+    double total;
+
+    for (int i = 0; i < 4; i++)
+    {
+        total = 0;
+        for (int j = 0; j < 4; j++)
+        {
+            total += m.val[i][j] * v.getElementAt(j);
+        }
+        values[i] = total;
+    }
+
+    return Vec4(values[0], values[1], values[2], values[3], v.color);
+}
\ No newline at end of file
diff --git a/Vector/Helpers.h b/Vector/Helpers.h
new file mode 100644
index 0000000..2ca7736
--- /dev/null
+++ b/Vector/Helpers.h
@@ -0,0 +1,83 @@
+#ifndef __HELPERS_H__
+#define __HELPERS_H__
+
+#define ABS(a) ((a) > 0 ? (a) : -1 * (a))
+#define EPSILON 0.000000001
+
+#include "../Matrix4.h"
+#include "Vec3.h"
+#include "Vec4.h"
+
+Vec3 vec4to3(Vec4 a);
+
+/*
+ * Calculate cross product of vec3 a, vec3 b and return resulting vec3.
+ */
+Vec3 crossProductVec3(Vec3 a, Vec3 b);
+
+/*
+ * Calculate dot product of vec3 a, vec3 b and return resulting value.
+ */
+double dotProductVec3(Vec3 a, Vec3 b);
+
+/*
+ * Find length (|v|) of vec3 v.
+ */
+double magnitudeOfVec3(Vec3 v);
+
+/*
+ * Normalize the vec3 to make it unit vec3.
+ */
+Vec3 normalizeVec3(Vec3 v);
+
+/*
+ * Return -v (inverse of vec3 v)
+ */
+Vec3 inverseVec3(Vec3 v);
+
+/*
+ * Add vec3 a to vec3 b and return resulting vec3 (a+b).
+ */
+Vec3 addVec3(Vec3 a, Vec3 b);
+
+/*
+ * Subtract vec3 b from vec3 a and return resulting vec3 (a-b).
+ */
+Vec3 subtractVec3(Vec3 a, Vec3 b);
+
+Color subtractColor(Color a, Color b);
+
+/*
+ * Multiply each element of vec3 with scalar.
+ */
+Vec3 multiplyVec3WithScalar(Vec3 v, double c);
+
+Color multiplyColorWithScalar(Color v, double c);
+
+/*
+ * Prints elements in a vec3. Can be used for debugging purposes.
+ */
+void printVec3(Vec3 v);
+
+/*
+ * Check whether vec3 a and vec3 b are equal.
+ * In case of equality, returns 1.
+ * Otherwise, returns 0.
+ */
+int areEqualVec3(Vec3 a, Vec3 b);
+/*
+ * Returns an identity matrix (values on the diagonal are 1, others are 0).
+*/
+Matrix4 getIdentityMatrix();
+
+/*
+ * Multiply matrices m1 (Matrix4) and m2 (Matrix4) and return the result matrix r (Matrix4).
+ */
+Matrix4 multiplyMatrixWithMatrix(Matrix4 m1, Matrix4 m2);
+
+/*
+ * Multiply matrix m (Matrix4) with vector v (vec4) and store the result in vector r (vec4).
+ */
+Vec4 multiplyMatrixWithVec4(Matrix4 m, Vec4 v);
+
+#endif
\ No newline at end of file
diff --git a/Vector/Vec3.cpp b/Vector/Vec3.cpp
new file mode 100644
index 0000000..db1afbb
--- /dev/null
+++ b/Vector/Vec3.cpp
@@ -0,0 +1,48 @@
+#include "Vec3.h"
+#include <iomanip>
+
+using namespace std;
+
+Vec3::Vec3() {
+    this->x = 0.0;
+    this->y = 0.0;
+    this->z = 0.0;
+    this->color = Color();
+}
+
+Vec3::Vec3(double x, double y, double z, const Color& color) {
+    this->x = x;
+    this->y = y;
+    this->z = z;
+    this->color = Color(color);
+}
+
+Vec3::Vec3(const Vec3 &other) {
+    this->x = other.x;
+    this->y = other.y;
+    this->z = other.z;
+    this->color = Color(other.color);
+}
+
+double Vec3::getElementAt(int index) {
+    switch (index) {
+        case 0:
+            return this->x;
+
+        case 1:
+            return this->y;
+
+        case 2:
+            return this->z;
+
+        default:
+            return this->z;
+    }
+}
+
+ostream &operator<<(ostream &os, const Vec3 &v) {
+
+    os << fixed << setprecision(6) << "[" << v.x << ", " << v.y << ", " << v.z << "]";
+
+    return os;
+}
diff --git a/Vector/Vec3.h b/Vector/Vec3.h
new file mode 100644
index 0000000..eb04a55
--- /dev/null
+++ b/Vector/Vec3.h
@@ -0,0 +1,23 @@
+#ifndef __VEC3_H__
+#define __VEC3_H__
+
+#include <iostream>
+#include "../Color.h"
+using namespace std;
+
+class Vec3
+{
+public:
+    double x, y, z;
+    Color color;
+
+    Vec3();
+    Vec3(double x, double y, double z, const Color& color);
+    Vec3(const Vec3 &other);
+
+    double getElementAt(int index);
+    
+    friend std::ostream& operator<<(std::ostream& os, const Vec3& v);
+};
+
+#endif
\ No newline at end of file
diff --git a/Vector/Vec4.cpp b/Vector/Vec4.cpp
new file mode 100644
index 0000000..a0f403e
--- /dev/null
+++ b/Vector/Vec4.cpp
@@ -0,0 +1,78 @@
+
+#include "Vec4.h"
+#include <iomanip>
+
+using namespace std;
+
+Vec4::Vec4()
+{
+    this->x = 0.0;
+    this->y = 0.0;
+    this->z = 0.0;
+    this->t = 0.0;
+    this->color = Color();
+}
+
+Vec4::Vec4(double x, double y, double z, double t, const Color& color)
+{
+    this->x = x;
+    this->y = y;
+    this->z = z;
+    this->t = t;
+    this->color = Color(color);
+}
+
+Vec4::Vec4(const Vec3 &other) {
+    this->x = other.x;
+    this->y = other.y;
+    this->z = other.z;
+    this->t = 1;
+    this->color = Color(other.color);
+}
+
+Vec4::Vec4(const Vec4 &other)
+{
+    this->x = other.x;
+    this->y = other.y;
+    this->z = other.z;
+    this->t = other.t;
+    this->color = Color(other.color);
+}
+
+double Vec4::getElementAt(int index)
+{
+    switch (index)
+    {
+    case 0:
+        return this->x;
+
+    case 1:
+        return this->y;
+
+    case 2:
+        return this->z;
+
+    case 3:
+        return this->t;
+
+    default:
+        return this->t;
+    }
+}
+
+Vec4 Vec4::operator/(double w) const {
+    Vec4 lhs;
+    lhs.x = this->x/w;
+    lhs.y = this->y/w;
+    lhs.z = this->z/w;
+    lhs.t = 1;
+    lhs.color = Color(this->color);
+    return lhs;
+}
+
+ostream& operator<<(ostream& os, const Vec4& v) {
+    
+    os << fixed << setprecision(6) << "[" << v.x << ", " << v.y << ", " << v.z << ", " << v.t << "]";
+
+    return os;
+}
diff --git a/Vector/Vec4.h b/Vector/Vec4.h
new file mode 100644
index 0000000..af90ce3
--- /dev/null
+++ b/Vector/Vec4.h
@@ -0,0 +1,29 @@
+#ifndef __VEC4_H__
+#define __VEC4_H__
+
+#include <iostream>
+#include "Vec3.h"
+#include "../Color.h"
+
+using namespace std;
+
+class Vec4
+{
+public:
+    double x, y, z, t;
+    Color color;
+
+
+    Vec4();
+    Vec4(double x, double y, double z, double t, const Color& color);
+    Vec4(const Vec3 &other);
+    Vec4(const Vec4 &other);
+    
+    double getElementAt(int index);
+
+    Vec4 operator/(double w) const;
+
+    friend std::ostream& operator<<(std::ostream& os, const Vec4& v);
+};
+
+#endif
\ No newline at end of file
diff --git a/tinyxml2.cpp b/tinyxml2.cpp
new file mode 100644
index 0000000..78a3274
--- /dev/null
+++ b/tinyxml2.cpp
@@ -0,0 +1,2675 @@
+/*
+Original code by Lee Thomason (www.grinninglizard.com)
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any
+damages arising from the use of this software.
+
+Permission is granted to anyone to use this software for any
+purpose, including commercial applications, and to alter it and
+redistribute it freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must
+not claim that you wrote the original software. If you use this
+software in a product, an acknowledgment in the product documentation
+would be appreciated but is not required.
+
+2. Altered source versions must be plainly marked as such, and
+must not be misrepresented as being the original software.
+
+3. This notice may not be removed or altered from any source
+distribution.
+*/
+
+#include "tinyxml2.h"
+
+#include <new>		// yes, this one new style header, is in the Android SDK.
+#if defined(ANDROID_NDK) || defined(__BORLANDC__) || defined(__QNXNTO__)
+#   include <stddef.h>
+#   include <stdarg.h>
+#else
+#   include <cstddef>
+#   include <cstdarg>
+#endif
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1400 ) && (!defined WINCE)
+	// Microsoft Visual Studio, version 2005 and higher. Not WinCE.
+	/*int _snprintf_s(
+	   char *buffer,
+	   size_t sizeOfBuffer,
+	   size_t count,
+	   const char *format [,
+		  argument] ...
+	);*/
+	static inline int TIXML_SNPRINTF( char* buffer, size_t size, const char* format, ... )
+	{
+		va_list va;
+		va_start( va, format );
+		int result = vsnprintf_s( buffer, size, _TRUNCATE, format, va );
+		va_end( va );
+		return result;
+	}
+
+	static inline int TIXML_VSNPRINTF( char* buffer, size_t size, const char* format, va_list va )
+	{
+		int result = vsnprintf_s( buffer, size, _TRUNCATE, format, va );
+		return result;
+	}
+
+	#define TIXML_VSCPRINTF	_vscprintf
+	#define TIXML_SSCANF	sscanf_s
+#elif defined _MSC_VER
+	// Microsoft Visual Studio 2003 and earlier or WinCE
+	#define TIXML_SNPRINTF	_snprintf
+	#define TIXML_VSNPRINTF _vsnprintf
+	#define TIXML_SSCANF	sscanf
+	#if (_MSC_VER < 1400 ) && (!defined WINCE)
+		// Microsoft Visual Studio 2003 and not WinCE.
+		#define TIXML_VSCPRINTF   _vscprintf // VS2003's C runtime has this, but VC6 C runtime or WinCE SDK doesn't have.
+	#else
+		// Microsoft Visual Studio 2003 and earlier or WinCE.
+		static inline int TIXML_VSCPRINTF( const char* format, va_list va )
+		{
+			int len = 512;
+			for (;;) {
+				len = len*2;
+				char* str = new char[len]();
+				const int required = _vsnprintf(str, len, format, va);
+				delete[] str;
+				if ( required != -1 ) {
+					TIXMLASSERT( required >= 0 );
+					len = required;
+					break;
+				}
+			}
+			TIXMLASSERT( len >= 0 );
+			return len;
+		}
+	#endif
+#else
+	// GCC version 3 and higher
+	//#warning( "Using sn* functions." )
+	#define TIXML_SNPRINTF	snprintf
+	#define TIXML_VSNPRINTF	vsnprintf
+	static inline int TIXML_VSCPRINTF( const char* format, va_list va )
+	{
+		int len = vsnprintf( 0, 0, format, va );
+		TIXMLASSERT( len >= 0 );
+		return len;
+	}
+	#define TIXML_SSCANF   sscanf
+#endif
+
+
+static const char LINE_FEED				= (char)0x0a;			// all line endings are normalized to LF
+static const char LF = LINE_FEED;
+static const char CARRIAGE_RETURN		= (char)0x0d;			// CR gets filtered out
+static const char CR = CARRIAGE_RETURN;
+static const char SINGLE_QUOTE			= '\'';
+static const char DOUBLE_QUOTE			= '\"';
+
+// Bunch of unicode info at:
+//		http://www.unicode.org/faq/utf_bom.html
+//	ef bb bf (Microsoft "lead bytes") - designates UTF-8
+
+static const unsigned char TIXML_UTF_LEAD_0 = 0xefU;
+static const unsigned char TIXML_UTF_LEAD_1 = 0xbbU;
+static const unsigned char TIXML_UTF_LEAD_2 = 0xbfU;
+
+namespace tinyxml2
+{
+
+struct Entity {
+    const char* pattern;
+    int length;
+    char value;
+};
+
+static const int NUM_ENTITIES = 5;
+static const Entity entities[NUM_ENTITIES] = {
+    { "quot", 4,	DOUBLE_QUOTE },
+    { "amp", 3,		'&'  },
+    { "apos", 4,	SINGLE_QUOTE },
+    { "lt",	2, 		'<'	 },
+    { "gt",	2,		'>'	 }
+};
+
+
+StrPair::~StrPair()
+{
+    Reset();
+}
+
+
+void StrPair::TransferTo( StrPair* other )
+{
+    if ( this == other ) {
+        return;
+    }
+    // This in effect implements the assignment operator by "moving"
+    // ownership (as in auto_ptr).
+
+    TIXMLASSERT( other != 0 );
+    TIXMLASSERT( other->_flags == 0 );
+    TIXMLASSERT( other->_start == 0 );
+    TIXMLASSERT( other->_end == 0 );
+
+    other->Reset();
+
+    other->_flags = _flags;
+    other->_start = _start;
+    other->_end = _end;
+
+    _flags = 0;
+    _start = 0;
+    _end = 0;
+}
+
+void StrPair::Reset()
+{
+    if ( _flags & NEEDS_DELETE ) {
+        delete [] _start;
+    }
+    _flags = 0;
+    _start = 0;
+    _end = 0;
+}
+
+
+void StrPair::SetStr( const char* str, int flags )
+{
+    TIXMLASSERT( str );
+    Reset();
+    size_t len = strlen( str );
+    TIXMLASSERT( _start == 0 );
+    _start = new char[ len+1 ];
+    memcpy( _start, str, len+1 );
+    _end = _start + len;
+    _flags = flags | NEEDS_DELETE;
+}
+
+
+char* StrPair::ParseText( char* p, const char* endTag, int strFlags, int* curLineNumPtr )
+{
+    TIXMLASSERT( p );
+    TIXMLASSERT( endTag && *endTag );
+	TIXMLASSERT(curLineNumPtr);
+
+    char* start = p;
+    char  endChar = *endTag;
+    size_t length = strlen( endTag );
+
+    // Inner loop of text parsing.
+    while ( *p ) {
+        if ( *p == endChar && strncmp( p, endTag, length ) == 0 ) {
+            Set( start, p, strFlags );
+            return p + length;
+        } else if (*p == '\n') {
+            ++(*curLineNumPtr);
+        }
+        ++p;
+        TIXMLASSERT( p );
+    }
+    return 0;
+}
+
+
+char* StrPair::ParseName( char* p )
+{
+    if ( !p || !(*p) ) {
+        return 0;
+    }
+    if ( !XMLUtil::IsNameStartChar( *p ) ) {
+        return 0;
+    }
+
+    char* const start = p;
+    ++p;
+    while ( *p && XMLUtil::IsNameChar( *p ) ) {
+        ++p;
+    }
+
+    Set( start, p, 0 );
+    return p;
+}
+
+
+void StrPair::CollapseWhitespace()
+{
+    // Adjusting _start would cause undefined behavior on delete[]
+    TIXMLASSERT( ( _flags & NEEDS_DELETE ) == 0 );
+    // Trim leading space.
+    _start = XMLUtil::SkipWhiteSpace( _start, 0 );
+
+    if ( *_start ) {
+        const char* p = _start;	// the read pointer
+        char* q = _start;	// the write pointer
+
+        while( *p ) {
+            if ( XMLUtil::IsWhiteSpace( *p )) {
+                p = XMLUtil::SkipWhiteSpace( p, 0 );
+                if ( *p == 0 ) {
+                    break;    // don't write to q; this trims the trailing space.
+                }
+                *q = ' ';
+                ++q;
+            }
+            *q = *p;
+            ++q;
+            ++p;
+        }
+        *q = 0;
+    }
+}
+
+
+const char* StrPair::GetStr()
+{
+    TIXMLASSERT( _start );
+    TIXMLASSERT( _end );
+    if ( _flags & NEEDS_FLUSH ) {
+        *_end = 0;
+        _flags ^= NEEDS_FLUSH;
+
+        if ( _flags ) {
+            const char* p = _start;	// the read pointer
+            char* q = _start;	// the write pointer
+
+            while( p < _end ) {
+                if ( (_flags & NEEDS_NEWLINE_NORMALIZATION) && *p == CR ) {
+                    // CR-LF pair becomes LF
+                    // CR alone becomes LF
+                    // LF-CR becomes LF
+                    if ( *(p+1) == LF ) {
+                        p += 2;
+                    }
+                    else {
+                        ++p;
+                    }
+                    *q = LF;
+                    ++q;
+                }
+                else if ( (_flags & NEEDS_NEWLINE_NORMALIZATION) && *p == LF ) {
+                    if ( *(p+1) == CR ) {
+                        p += 2;
+                    }
+                    else {
+                        ++p;
+                    }
+                    *q = LF;
+                    ++q;
+                }
+                else if ( (_flags & NEEDS_ENTITY_PROCESSING) && *p == '&' ) {
+                    // Entities handled by tinyXML2:
+                    // - special entities in the entity table [in/out]
+                    // - numeric character reference [in]
+                    //   &#20013; or &#x4e2d;
+
+                    if ( *(p+1) == '#' ) {
+                        const int buflen = 10;
+                        char buf[buflen] = { 0 };
+                        int len = 0;
+                        char* adjusted = const_cast<char*>( XMLUtil::GetCharacterRef( p, buf, &len ) );
+                        if ( adjusted == 0 ) {
+                            *q = *p;
+                            ++p;
+                            ++q;
+                        }
+                        else {
+                            TIXMLASSERT( 0 <= len && len <= buflen );
+                            TIXMLASSERT( q + len <= adjusted );
+                            p = adjusted;
+                            memcpy( q, buf, len );
+                            q += len;
+                        }
+                    }
+                    else {
+                        bool entityFound = false;
+                        for( int i = 0; i < NUM_ENTITIES; ++i ) {
+                            const Entity& entity = entities[i];
+                            if ( strncmp( p + 1, entity.pattern, entity.length ) == 0
+                                    && *( p + entity.length + 1 ) == ';' ) {
+                                // Found an entity - convert.
+                                *q = entity.value;
+                                ++q;
+                                p += entity.length + 2;
+                                entityFound = true;
+                                break;
+                            }
+                        }
+                        if ( !entityFound ) {
+                            // fixme: treat as error?
+                            ++p;
+                            ++q;
+                        }
+                    }
+                }
+                else {
+                    *q = *p;
+                    ++p;
+                    ++q;
+                }
+            }
+            *q = 0;
+        }
+        // The loop below has plenty going on, and this
+        // is a less useful mode. Break it out.
+        if ( _flags & NEEDS_WHITESPACE_COLLAPSING ) {
+            CollapseWhitespace();
+        }
+        _flags = (_flags & NEEDS_DELETE);
+    }
+    TIXMLASSERT( _start );
+    return _start;
+}
+
+
+
+
+// --------- XMLUtil ----------- //
+
+const char* XMLUtil::writeBoolTrue  = "true";
+const char* XMLUtil::writeBoolFalse = "false";
+
+void XMLUtil::SetBoolSerialization(const char* writeTrue, const char* writeFalse)
+{
+	static const char* defTrue  = "true";
+	static const char* defFalse = "false";
+
+	writeBoolTrue = (writeTrue) ? writeTrue : defTrue;
+	writeBoolFalse = (writeFalse) ? writeFalse : defFalse;
+}
+
+
+const char* XMLUtil::ReadBOM( const char* p, bool* bom )
+{
+    TIXMLASSERT( p );
+    TIXMLASSERT( bom );
+    *bom = false;
+    const unsigned char* pu = reinterpret_cast<const unsigned char*>(p);
+    // Check for BOM:
+    if (    *(pu+0) == TIXML_UTF_LEAD_0
+            && *(pu+1) == TIXML_UTF_LEAD_1
+            && *(pu+2) == TIXML_UTF_LEAD_2 ) {
+        *bom = true;
+        p += 3;
+    }
+    TIXMLASSERT( p );
+    return p;
+}
+
+
+void XMLUtil::ConvertUTF32ToUTF8( unsigned long input, char* output, int* length )
+{
+    const unsigned long BYTE_MASK = 0xBF;
+    const unsigned long BYTE_MARK = 0x80;
+    const unsigned long FIRST_BYTE_MARK[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
+
+    if (input < 0x80) {
+        *length = 1;
+    }
+    else if ( input < 0x800 ) {
+        *length = 2;
+    }
+    else if ( input < 0x10000 ) {
+        *length = 3;
+    }
+    else if ( input < 0x200000 ) {
+        *length = 4;
+    }
+    else {
+        *length = 0;    // This code won't convert this correctly anyway.
+        return;
+    }
+
+    output += *length;
+
+    // Scary scary fall throughs.
+    switch (*length) {
+        case 4:
+            --output;
+            *output = (char)((input | BYTE_MARK) & BYTE_MASK);
+            input >>= 6;
+        case 3:
+            --output;
+            *output = (char)((input | BYTE_MARK) & BYTE_MASK);
+            input >>= 6;
+        case 2:
+            --output;
+            *output = (char)((input | BYTE_MARK) & BYTE_MASK);
+            input >>= 6;
+        case 1:
+            --output;
+            *output = (char)(input | FIRST_BYTE_MARK[*length]);
+            break;
+        default:
+            TIXMLASSERT( false );
+    }
+}
+
+
+const char* XMLUtil::GetCharacterRef( const char* p, char* value, int* length )
+{
+    // Presume an entity, and pull it out.
+    *length = 0;
+
+    if ( *(p+1) == '#' && *(p+2) ) {
+        unsigned long ucs = 0;
+        TIXMLASSERT( sizeof( ucs ) >= 4 );
+        ptrdiff_t delta = 0;
+        unsigned mult = 1;
+        static const char SEMICOLON = ';';
+
+        if ( *(p+2) == 'x' ) {
+            // Hexadecimal.
+            const char* q = p+3;
+            if ( !(*q) ) {
+                return 0;
+            }
+
+            q = strchr( q, SEMICOLON );
+
+            if ( !q ) {
+                return 0;
+            }
+            TIXMLASSERT( *q == SEMICOLON );
+
+            delta = q-p;
+            --q;
+
+            while ( *q != 'x' ) {
+                unsigned int digit = 0;
+
+                if ( *q >= '0' && *q <= '9' ) {
+                    digit = *q - '0';
+                }
+                else if ( *q >= 'a' && *q <= 'f' ) {
+                    digit = *q - 'a' + 10;
+                }
+                else if ( *q >= 'A' && *q <= 'F' ) {
+                    digit = *q - 'A' + 10;
+                }
+                else {
+                    return 0;
+                }
+                TIXMLASSERT( digit < 16 );
+                TIXMLASSERT( digit == 0 || mult <= UINT_MAX / digit );
+                const unsigned int digitScaled = mult * digit;
+                TIXMLASSERT( ucs <= ULONG_MAX - digitScaled );
+                ucs += digitScaled;
+                TIXMLASSERT( mult <= UINT_MAX / 16 );
+                mult *= 16;
+                --q;
+            }
+        }
+        else {
+            // Decimal.
+            const char* q = p+2;
+            if ( !(*q) ) {
+                return 0;
+            }
+
+            q = strchr( q, SEMICOLON );
+
+            if ( !q ) {
+                return 0;
+            }
+            TIXMLASSERT( *q == SEMICOLON );
+
+            delta = q-p;
+            --q;
+
+            while ( *q != '#' ) {
+                if ( *q >= '0' && *q <= '9' ) {
+                    const unsigned int digit = *q - '0';
+                    TIXMLASSERT( digit < 10 );
+                    TIXMLASSERT( digit == 0 || mult <= UINT_MAX / digit );
+                    const unsigned int digitScaled = mult * digit;
+                    TIXMLASSERT( ucs <= ULONG_MAX - digitScaled );
+                    ucs += digitScaled;
+                }
+                else {
+                    return 0;
+                }
+                TIXMLASSERT( mult <= UINT_MAX / 10 );
+                mult *= 10;
+                --q;
+            }
+        }
+        // convert the UCS to UTF-8
+        ConvertUTF32ToUTF8( ucs, value, length );
+        return p + delta + 1;
+    }
+    return p+1;
+}
+
+
+void XMLUtil::ToStr( int v, char* buffer, int bufferSize )
+{
+    TIXML_SNPRINTF( buffer, bufferSize, "%d", v );
+}
+
+
+void XMLUtil::ToStr( unsigned v, char* buffer, int bufferSize )
+{
+    TIXML_SNPRINTF( buffer, bufferSize, "%u", v );
+}
+
+
+void XMLUtil::ToStr( bool v, char* buffer, int bufferSize )
+{
+    TIXML_SNPRINTF( buffer, bufferSize, "%s", v ? writeBoolTrue : writeBoolFalse);
+}
+
+/*
+	ToStr() of a number is a very tricky topic.
+	https://github.com/leethomason/tinyxml2/issues/106
+*/
+void XMLUtil::ToStr( float v, char* buffer, int bufferSize )
+{
+    TIXML_SNPRINTF( buffer, bufferSize, "%.8g", v );
+}
+
+
+void XMLUtil::ToStr( double v, char* buffer, int bufferSize )
+{
+    TIXML_SNPRINTF( buffer, bufferSize, "%.17g", v );
+}
+
+
+void XMLUtil::ToStr(int64_t v, char* buffer, int bufferSize)
+{
+	// horrible syntax trick to make the compiler happy about %lld
+	TIXML_SNPRINTF(buffer, bufferSize, "%lld", (long long)v);
+}
+
+
+bool XMLUtil::ToInt( const char* str, int* value )
+{
+    if ( TIXML_SSCANF( str, "%d", value ) == 1 ) {
+        return true;
+    }
+    return false;
+}
+
+bool XMLUtil::ToUnsigned( const char* str, unsigned *value )
+{
+    if ( TIXML_SSCANF( str, "%u", value ) == 1 ) {
+        return true;
+    }
+    return false;
+}
+
+bool XMLUtil::ToBool( const char* str, bool* value )
+{
+    int ival = 0;
+    if ( ToInt( str, &ival )) {
+        *value = (ival==0) ? false : true;
+        return true;
+    }
+    if ( StringEqual( str, "true" ) ) {
+        *value = true;
+        return true;
+    }
+    else if ( StringEqual( str, "false" ) ) {
+        *value = false;
+        return true;
+    }
+    return false;
+}
+
+
+bool XMLUtil::ToFloat( const char* str, float* value )
+{
+    if ( TIXML_SSCANF( str, "%f", value ) == 1 ) {
+        return true;
+    }
+    return false;
+}
+
+
+bool XMLUtil::ToDouble( const char* str, double* value )
+{
+    if ( TIXML_SSCANF( str, "%lf", value ) == 1 ) {
+        return true;
+    }
+    return false;
+}
+
+
+bool XMLUtil::ToInt64(const char* str, int64_t* value)
+{
+	long long v = 0;	// horrible syntax trick to make the compiler happy about %lld
+	if (TIXML_SSCANF(str, "%lld", &v) == 1) {
+		*value = (int64_t)v;
+		return true;
+	}
+	return false;
+}
+
+
+char* XMLDocument::Identify( char* p, XMLNode** node )
+{
+    TIXMLASSERT( node );
+    TIXMLASSERT( p );
+    char* const start = p;
+    int const startLine = _parseCurLineNum;
+    p = XMLUtil::SkipWhiteSpace( p, &_parseCurLineNum );
+    if( !*p ) {
+        *node = 0;
+        TIXMLASSERT( p );
+        return p;
+    }
+
+    // These strings define the matching patterns:
+    static const char* xmlHeader		= { "<?" };
+    static const char* commentHeader	= { "<!--" };
+    static const char* cdataHeader		= { "<![CDATA[" };
+    static const char* dtdHeader		= { "<!" };
+    static const char* elementHeader	= { "<" };	// and a header for everything else; check last.
+
+    static const int xmlHeaderLen		= 2;
+    static const int commentHeaderLen	= 4;
+    static const int cdataHeaderLen		= 9;
+    static const int dtdHeaderLen		= 2;
+    static const int elementHeaderLen	= 1;
+
+    TIXMLASSERT( sizeof( XMLComment ) == sizeof( XMLUnknown ) );		// use same memory pool
+    TIXMLASSERT( sizeof( XMLComment ) == sizeof( XMLDeclaration ) );	// use same memory pool
+    XMLNode* returnNode = 0;
+    if ( XMLUtil::StringEqual( p, xmlHeader, xmlHeaderLen ) ) {
+        returnNode = CreateUnlinkedNode<XMLDeclaration>( _commentPool );
+        returnNode->_parseLineNum = _parseCurLineNum;
+        p += xmlHeaderLen;
+    }
+    else if ( XMLUtil::StringEqual( p, commentHeader, commentHeaderLen ) ) {
+        returnNode = CreateUnlinkedNode<XMLComment>( _commentPool );
+        returnNode->_parseLineNum = _parseCurLineNum;
+        p += commentHeaderLen;
+    }
+    else if ( XMLUtil::StringEqual( p, cdataHeader, cdataHeaderLen ) ) {
+        XMLText* text = CreateUnlinkedNode<XMLText>( _textPool );
+        returnNode = text;
+        returnNode->_parseLineNum = _parseCurLineNum;
+        p += cdataHeaderLen;
+        text->SetCData( true );
+    }
+    else if ( XMLUtil::StringEqual( p, dtdHeader, dtdHeaderLen ) ) {
+        returnNode = CreateUnlinkedNode<XMLUnknown>( _commentPool );
+        returnNode->_parseLineNum = _parseCurLineNum;
+        p += dtdHeaderLen;
+    }
+    else if ( XMLUtil::StringEqual( p, elementHeader, elementHeaderLen ) ) {
+        returnNode =  CreateUnlinkedNode<XMLElement>( _elementPool );
+        returnNode->_parseLineNum = _parseCurLineNum;
+        p += elementHeaderLen;
+    }
+    else {
+        returnNode = CreateUnlinkedNode<XMLText>( _textPool );
+        returnNode->_parseLineNum = _parseCurLineNum; // Report line of first non-whitespace character
+        p = start;	// Back it up, all the text counts.
+        _parseCurLineNum = startLine;
+    }
+
+    TIXMLASSERT( returnNode );
+    TIXMLASSERT( p );
+    *node = returnNode;
+    return p;
+}
+
+
+bool XMLDocument::Accept( XMLVisitor* visitor ) const
+{
+    TIXMLASSERT( visitor );
+    if ( visitor->VisitEnter( *this ) ) {
+        for ( const XMLNode* node=FirstChild(); node; node=node->NextSibling() ) {
+            if ( !node->Accept( visitor ) ) {
+                break;
+            }
+        }
+    }
+    return visitor->VisitExit( *this );
+}
+
+
+// --------- XMLNode ----------- //
+
+XMLNode::XMLNode( XMLDocument* doc ) :
+    _document( doc ),
+    _parent( 0 ),
+    _parseLineNum( 0 ),
+    _firstChild( 0 ), _lastChild( 0 ),
+    _prev( 0 ), _next( 0 ),
+	_userData( 0 ),
+    _memPool( 0 )
+{
+}
+
+
+XMLNode::~XMLNode()
+{
+    DeleteChildren();
+    if ( _parent ) {
+        _parent->Unlink( this );
+    }
+}
+
+const char* XMLNode::Value() const 
+{
+    // Edge case: XMLDocuments don't have a Value. Return null.
+    if ( this->ToDocument() )
+        return 0;
+    return _value.GetStr();
+}
+
+void XMLNode::SetValue( const char* str, bool staticMem )
+{
+    if ( staticMem ) {
+        _value.SetInternedStr( str );
+    }
+    else {
+        _value.SetStr( str );
+    }
+}
+
+
+void XMLNode::DeleteChildren()
+{
+    while( _firstChild ) {
+        TIXMLASSERT( _lastChild );
+        DeleteChild( _firstChild );
+    }
+    _firstChild = _lastChild = 0;
+}
+
+
+void XMLNode::Unlink( XMLNode* child )
+{
+    TIXMLASSERT( child );
+    TIXMLASSERT( child->_document == _document );
+    TIXMLASSERT( child->_parent == this );
+    if ( child == _firstChild ) {
+        _firstChild = _firstChild->_next;
+    }
+    if ( child == _lastChild ) {
+        _lastChild = _lastChild->_prev;
+    }
+
+    if ( child->_prev ) {
+        child->_prev->_next = child->_next;
+    }
+    if ( child->_next ) {
+        child->_next->_prev = child->_prev;
+    }
+	child->_parent = 0;
+}
+
+
+void XMLNode::DeleteChild( XMLNode* node )
+{
+    TIXMLASSERT( node );
+    TIXMLASSERT( node->_document == _document );
+    TIXMLASSERT( node->_parent == this );
+    Unlink( node );
+    DeleteNode( node );
+}
+
+
+XMLNode* XMLNode::InsertEndChild( XMLNode* addThis )
+{
+    TIXMLASSERT( addThis );
+    if ( addThis->_document != _document ) {
+        TIXMLASSERT( false );
+        return 0;
+    }
+    InsertChildPreamble( addThis );
+
+    if ( _lastChild ) {
+        TIXMLASSERT( _firstChild );
+        TIXMLASSERT( _lastChild->_next == 0 );
+        _lastChild->_next = addThis;
+        addThis->_prev = _lastChild;
+        _lastChild = addThis;
+
+        addThis->_next = 0;
+    }
+    else {
+        TIXMLASSERT( _firstChild == 0 );
+        _firstChild = _lastChild = addThis;
+
+        addThis->_prev = 0;
+        addThis->_next = 0;
+    }
+    addThis->_parent = this;
+    return addThis;
+}
+
+
+XMLNode* XMLNode::InsertFirstChild( XMLNode* addThis )
+{
+    TIXMLASSERT( addThis );
+    if ( addThis->_document != _document ) {
+        TIXMLASSERT( false );
+        return 0;
+    }
+    InsertChildPreamble( addThis );
+
+    if ( _firstChild ) {
+        TIXMLASSERT( _lastChild );
+        TIXMLASSERT( _firstChild->_prev == 0 );
+
+        _firstChild->_prev = addThis;
+        addThis->_next = _firstChild;
+        _firstChild = addThis;
+
+        addThis->_prev = 0;
+    }
+    else {
+        TIXMLASSERT( _lastChild == 0 );
+        _firstChild = _lastChild = addThis;
+
+        addThis->_prev = 0;
+        addThis->_next = 0;
+    }
+    addThis->_parent = this;
+    return addThis;
+}
+
+
+XMLNode* XMLNode::InsertAfterChild( XMLNode* afterThis, XMLNode* addThis )
+{
+    TIXMLASSERT( addThis );
+    if ( addThis->_document != _document ) {
+        TIXMLASSERT( false );
+        return 0;
+    }
+
+    TIXMLASSERT( afterThis );
+
+    if ( afterThis->_parent != this ) {
+        TIXMLASSERT( false );
+        return 0;
+    }
+
+    if ( afterThis->_next == 0 ) {
+        // The last node or the only node.
+        return InsertEndChild( addThis );
+    }
+    InsertChildPreamble( addThis );
+    addThis->_prev = afterThis;
+    addThis->_next = afterThis->_next;
+    afterThis->_next->_prev = addThis;
+    afterThis->_next = addThis;
+    addThis->_parent = this;
+    return addThis;
+}
+
+
+
+
+const XMLElement* XMLNode::FirstChildElement( const char* name ) const
+{
+    for( const XMLNode* node = _firstChild; node; node = node->_next ) {
+        const XMLElement* element = node->ToElementWithName( name );
+        if ( element ) {
+            return element;
+        }
+    }
+    return 0;
+}
+
+
+const XMLElement* XMLNode::LastChildElement( const char* name ) const
+{
+    for( const XMLNode* node = _lastChild; node; node = node->_prev ) {
+        const XMLElement* element = node->ToElementWithName( name );
+        if ( element ) {
+            return element;
+        }
+    }
+    return 0;
+}
+
+
+const XMLElement* XMLNode::NextSiblingElement( const char* name ) const
+{
+    for( const XMLNode* node = _next; node; node = node->_next ) {
+        const XMLElement* element = node->ToElementWithName( name );
+        if ( element ) {
+            return element;
+        }
+    }
+    return 0;
+}
+
+
+const XMLElement* XMLNode::PreviousSiblingElement( const char* name ) const
+{
+    for( const XMLNode* node = _prev; node; node = node->_prev ) {
+        const XMLElement* element = node->ToElementWithName( name );
+        if ( element ) {
+            return element;
+        }
+    }
+    return 0;
+}
+
+
+char* XMLNode::ParseDeep( char* p, StrPair* parentEnd, int* curLineNumPtr )
+{
+    // This is a recursive method, but thinking about it "at the current level"
+    // it is a pretty simple flat list:
+    //		<foo/>
+    //		<!-- comment -->
+    //
+    // With a special case:
+    //		<foo>
+    //		</foo>
+    //		<!-- comment -->
+    //
+    // Where the closing element (/foo) *must* be the next thing after the opening
+    // element, and the names must match. BUT the tricky bit is that the closing
+    // element will be read by the child.
+    //
+    // 'endTag' is the end tag for this node, it is returned by a call to a child.
+    // 'parentEnd' is the end tag for the parent, which is filled in and returned.
+
+    while( p && *p ) {
+        XMLNode* node = 0;
+
+        p = _document->Identify( p, &node );
+        TIXMLASSERT( p );
+        if ( node == 0 ) {
+            break;
+        }
+
+        int initialLineNum = node->_parseLineNum;
+
+        StrPair endTag;
+        p = node->ParseDeep( p, &endTag, curLineNumPtr );
+        if ( !p ) {
+            DeleteNode( node );
+            if ( !_document->Error() ) {
+                _document->SetError( XML_ERROR_PARSING, 0, 0, initialLineNum);
+            }
+            break;
+        }
+
+        XMLDeclaration* decl = node->ToDeclaration();
+        if ( decl ) {
+            // Declarations are only allowed at document level
+            bool wellLocated = ( ToDocument() != 0 );
+            if ( wellLocated ) {
+                // Multiple declarations are allowed but all declarations
+                // must occur before anything else
+                for ( const XMLNode* existingNode = _document->FirstChild(); existingNode; existingNode = existingNode->NextSibling() ) {
+                    if ( !existingNode->ToDeclaration() ) {
+                        wellLocated = false;
+                        break;
+                    }
+                }
+            }
+            if ( !wellLocated ) {
+                _document->SetError( XML_ERROR_PARSING_DECLARATION, decl->Value(), 0, initialLineNum);
+                DeleteNode( node );
+                break;
+            }
+        }
+
+        XMLElement* ele = node->ToElement();
+        if ( ele ) {
+            // We read the end tag. Return it to the parent.
+            if ( ele->ClosingType() == XMLElement::CLOSING ) {
+                if ( parentEnd ) {
+                    ele->_value.TransferTo( parentEnd );
+                }
+                node->_memPool->SetTracked();   // created and then immediately deleted.
+                DeleteNode( node );
+                return p;
+            }
+
+            // Handle an end tag returned to this level.
+            // And handle a bunch of annoying errors.
+            bool mismatch = false;
+            if ( endTag.Empty() ) {
+                if ( ele->ClosingType() == XMLElement::OPEN ) {
+                    mismatch = true;
+                }
+            }
+            else {
+                if ( ele->ClosingType() != XMLElement::OPEN ) {
+                    mismatch = true;
+                }
+                else if ( !XMLUtil::StringEqual( endTag.GetStr(), ele->Name() ) ) {
+                    mismatch = true;
+                }
+            }
+            if ( mismatch ) {
+                _document->SetError( XML_ERROR_MISMATCHED_ELEMENT, ele->Name(), 0, initialLineNum);
+                DeleteNode( node );
+                break;
+            }
+        }
+        InsertEndChild( node );
+    }
+    return 0;
+}
+
+void XMLNode::DeleteNode( XMLNode* node )
+{
+    if ( node == 0 ) {
+        return;
+    }
+    MemPool* pool = node->_memPool;
+    node->~XMLNode();
+    pool->Free( node );
+}
+
+void XMLNode::InsertChildPreamble( XMLNode* insertThis ) const
+{
+    TIXMLASSERT( insertThis );
+    TIXMLASSERT( insertThis->_document == _document );
+
+    if ( insertThis->_parent )
+        insertThis->_parent->Unlink( insertThis );
+    else
+        insertThis->_memPool->SetTracked();
+}
+
+const XMLElement* XMLNode::ToElementWithName( const char* name ) const
+{
+    const XMLElement* element = this->ToElement();
+    if ( element == 0 ) {
+        return 0;
+    }
+    if ( name == 0 ) {
+        return element;
+    }
+    if ( XMLUtil::StringEqual( element->Name(), name ) ) {
+       return element;
+    }
+    return 0;
+}
+
+// --------- XMLText ---------- //
+char* XMLText::ParseDeep( char* p, StrPair*, int* curLineNumPtr )
+{
+    const char* start = p;
+    if ( this->CData() ) {
+        p = _value.ParseText( p, "]]>", StrPair::NEEDS_NEWLINE_NORMALIZATION, curLineNumPtr );
+        if ( !p ) {
+            _document->SetError( XML_ERROR_PARSING_CDATA, start, 0, _parseLineNum );
+        }
+        return p;
+    }
+    else {
+        int flags = _document->ProcessEntities() ? StrPair::TEXT_ELEMENT : StrPair::TEXT_ELEMENT_LEAVE_ENTITIES;
+        if ( _document->WhitespaceMode() == COLLAPSE_WHITESPACE ) {
+            flags |= StrPair::NEEDS_WHITESPACE_COLLAPSING;
+        }
+
+        p = _value.ParseText( p, "<", flags, curLineNumPtr );
+        if ( p && *p ) {
+            return p-1;
+        }
+        if ( !p ) {
+            _document->SetError( XML_ERROR_PARSING_TEXT, start, 0, _parseLineNum );
+        }
+    }
+    return 0;
+}
+
+
+XMLNode* XMLText::ShallowClone( XMLDocument* doc ) const
+{
+    if ( !doc ) {
+        doc = _document;
+    }
+    XMLText* text = doc->NewText( Value() );	// fixme: this will always allocate memory. Intern?
+    text->SetCData( this->CData() );
+    return text;
+}
+
+
+bool XMLText::ShallowEqual( const XMLNode* compare ) const
+{
+    const XMLText* text = compare->ToText();
+    return ( text && XMLUtil::StringEqual( text->Value(), Value() ) );
+}
+
+
+bool XMLText::Accept( XMLVisitor* visitor ) const
+{
+    TIXMLASSERT( visitor );
+    return visitor->Visit( *this );
+}
+
+
+// --------- XMLComment ---------- //
+
+XMLComment::XMLComment( XMLDocument* doc ) : XMLNode( doc )
+{
+}
+
+
+XMLComment::~XMLComment()
+{
+}
+
+
+char* XMLComment::ParseDeep( char* p, StrPair*, int* curLineNumPtr )
+{
+    // Comment parses as text.
+    const char* start = p;
+    p = _value.ParseText( p, "-->", StrPair::COMMENT, curLineNumPtr );
+    if ( p == 0 ) {
+        _document->SetError( XML_ERROR_PARSING_COMMENT, start, 0, _parseLineNum );
+    }
+    return p;
+}
+
+
+XMLNode* XMLComment::ShallowClone( XMLDocument* doc ) const
+{
+    if ( !doc ) {
+        doc = _document;
+    }
+    XMLComment* comment = doc->NewComment( Value() );	// fixme: this will always allocate memory. Intern?
+    return comment;
+}
+
+
+bool XMLComment::ShallowEqual( const XMLNode* compare ) const
+{
+    TIXMLASSERT( compare );
+    const XMLComment* comment = compare->ToComment();
+    return ( comment && XMLUtil::StringEqual( comment->Value(), Value() ));
+}
+
+
+bool XMLComment::Accept( XMLVisitor* visitor ) const
+{
+    TIXMLASSERT( visitor );
+    return visitor->Visit( *this );
+}
+
+
+// --------- XMLDeclaration ---------- //
+
+XMLDeclaration::XMLDeclaration( XMLDocument* doc ) : XMLNode( doc )
+{
+}
+
+
+XMLDeclaration::~XMLDeclaration()
+{
+    //printf( "~XMLDeclaration\n" );
+}
+
+
+char* XMLDeclaration::ParseDeep( char* p, StrPair*, int* curLineNumPtr )
+{
+    // Declaration parses as text.
+    const char* start = p;
+    p = _value.ParseText( p, "?>", StrPair::NEEDS_NEWLINE_NORMALIZATION, curLineNumPtr );
+    if ( p == 0 ) {
+        _document->SetError( XML_ERROR_PARSING_DECLARATION, start, 0, _parseLineNum );
+    }
+    return p;
+}
+
+
+XMLNode* XMLDeclaration::ShallowClone( XMLDocument* doc ) const
+{
+    if ( !doc ) {
+        doc = _document;
+    }
+    XMLDeclaration* dec = doc->NewDeclaration( Value() );	// fixme: this will always allocate memory. Intern?
+    return dec;
+}
+
+
+bool XMLDeclaration::ShallowEqual( const XMLNode* compare ) const
+{
+    TIXMLASSERT( compare );
+    const XMLDeclaration* declaration = compare->ToDeclaration();
+    return ( declaration && XMLUtil::StringEqual( declaration->Value(), Value() ));
+}
+
+
+
+bool XMLDeclaration::Accept( XMLVisitor* visitor ) const
+{
+    TIXMLASSERT( visitor );
+    return visitor->Visit( *this );
+}
+
+// --------- XMLUnknown ---------- //
+
+XMLUnknown::XMLUnknown( XMLDocument* doc ) : XMLNode( doc )
+{
+}
+
+
+XMLUnknown::~XMLUnknown()
+{
+}
+
+
+char* XMLUnknown::ParseDeep( char* p, StrPair*, int* curLineNumPtr )
+{
+    // Unknown parses as text.
+    const char* start = p;
+
+    p = _value.ParseText( p, ">", StrPair::NEEDS_NEWLINE_NORMALIZATION, curLineNumPtr );
+    if ( !p ) {
+        _document->SetError( XML_ERROR_PARSING_UNKNOWN, start, 0, _parseLineNum );
+    }
+    return p;
+}
+
+
+XMLNode* XMLUnknown::ShallowClone( XMLDocument* doc ) const
+{
+    if ( !doc ) {
+        doc = _document;
+    }
+    XMLUnknown* text = doc->NewUnknown( Value() );	// fixme: this will always allocate memory. Intern?
+    return text;
+}
+
+
+bool XMLUnknown::ShallowEqual( const XMLNode* compare ) const
+{
+    TIXMLASSERT( compare );
+    const XMLUnknown* unknown = compare->ToUnknown();
+    return ( unknown && XMLUtil::StringEqual( unknown->Value(), Value() ));
+}
+
+
+bool XMLUnknown::Accept( XMLVisitor* visitor ) const
+{
+    TIXMLASSERT( visitor );
+    return visitor->Visit( *this );
+}
+
+// --------- XMLAttribute ---------- //
+
+const char* XMLAttribute::Name() const 
+{
+    return _name.GetStr();
+}
+
+const char* XMLAttribute::Value() const 
+{
+    return _value.GetStr();
+}
+
+char* XMLAttribute::ParseDeep( char* p, bool processEntities, int* curLineNumPtr )
+{
+    // Parse using the name rules: bug fix, was using ParseText before
+    p = _name.ParseName( p );
+    if ( !p || !*p ) {
+        return 0;
+    }
+
+    // Skip white space before =
+    p = XMLUtil::SkipWhiteSpace( p, curLineNumPtr );
+    if ( *p != '=' ) {
+        return 0;
+    }
+
+    ++p;	// move up to opening quote
+    p = XMLUtil::SkipWhiteSpace( p, curLineNumPtr );
+    if ( *p != '\"' && *p != '\'' ) {
+        return 0;
+    }
+
+    char endTag[2] = { *p, 0 };
+    ++p;	// move past opening quote
+
+    p = _value.ParseText( p, endTag, processEntities ? StrPair::ATTRIBUTE_VALUE : StrPair::ATTRIBUTE_VALUE_LEAVE_ENTITIES, curLineNumPtr );
+    return p;
+}
+
+
+void XMLAttribute::SetName( const char* n )
+{
+    _name.SetStr( n );
+}
+
+
+XMLError XMLAttribute::QueryIntValue( int* value ) const
+{
+    if ( XMLUtil::ToInt( Value(), value )) {
+        return XML_SUCCESS;
+    }
+    return XML_WRONG_ATTRIBUTE_TYPE;
+}
+
+
+XMLError XMLAttribute::QueryUnsignedValue( unsigned int* value ) const
+{
+    if ( XMLUtil::ToUnsigned( Value(), value )) {
+        return XML_SUCCESS;
+    }
+    return XML_WRONG_ATTRIBUTE_TYPE;
+}
+
+
+XMLError XMLAttribute::QueryInt64Value(int64_t* value) const
+{
+	if (XMLUtil::ToInt64(Value(), value)) {
+		return XML_SUCCESS;
+	}
+	return XML_WRONG_ATTRIBUTE_TYPE;
+}
+
+
+XMLError XMLAttribute::QueryBoolValue( bool* value ) const
+{
+    if ( XMLUtil::ToBool( Value(), value )) {
+        return XML_SUCCESS;
+    }
+    return XML_WRONG_ATTRIBUTE_TYPE;
+}
+
+
+XMLError XMLAttribute::QueryFloatValue( float* value ) const
+{
+    if ( XMLUtil::ToFloat( Value(), value )) {
+        return XML_SUCCESS;
+    }
+    return XML_WRONG_ATTRIBUTE_TYPE;
+}
+
+
+XMLError XMLAttribute::QueryDoubleValue( double* value ) const
+{
+    if ( XMLUtil::ToDouble( Value(), value )) {
+        return XML_SUCCESS;
+    }
+    return XML_WRONG_ATTRIBUTE_TYPE;
+}
+
+
+void XMLAttribute::SetAttribute( const char* v )
+{
+    _value.SetStr( v );
+}
+
+
+void XMLAttribute::SetAttribute( int v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    _value.SetStr( buf );
+}
+
+
+void XMLAttribute::SetAttribute( unsigned v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    _value.SetStr( buf );
+}
+
+
+void XMLAttribute::SetAttribute(int64_t v)
+{
+	char buf[BUF_SIZE];
+	XMLUtil::ToStr(v, buf, BUF_SIZE);
+	_value.SetStr(buf);
+}
+
+
+
+void XMLAttribute::SetAttribute( bool v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    _value.SetStr( buf );
+}
+
+void XMLAttribute::SetAttribute( double v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    _value.SetStr( buf );
+}
+
+void XMLAttribute::SetAttribute( float v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    _value.SetStr( buf );
+}
+
+
+// --------- XMLElement ---------- //
+XMLElement::XMLElement( XMLDocument* doc ) : XMLNode( doc ),
+    _closingType( 0 ),
+    _rootAttribute( 0 )
+{
+}
+
+
+XMLElement::~XMLElement()
+{
+    while( _rootAttribute ) {
+        XMLAttribute* next = _rootAttribute->_next;
+        DeleteAttribute( _rootAttribute );
+        _rootAttribute = next;
+    }
+}
+
+
+const XMLAttribute* XMLElement::FindAttribute( const char* name ) const
+{
+    for( XMLAttribute* a = _rootAttribute; a; a = a->_next ) {
+        if ( XMLUtil::StringEqual( a->Name(), name ) ) {
+            return a;
+        }
+    }
+    return 0;
+}
+
+
+const char* XMLElement::Attribute( const char* name, const char* value ) const
+{
+    const XMLAttribute* a = FindAttribute( name );
+    if ( !a ) {
+        return 0;
+    }
+    if ( !value || XMLUtil::StringEqual( a->Value(), value )) {
+        return a->Value();
+    }
+    return 0;
+}
+
+int XMLElement::IntAttribute(const char* name, int defaultValue) const 
+{
+	int i = defaultValue;
+	QueryIntAttribute(name, &i);
+	return i;
+}
+
+unsigned XMLElement::UnsignedAttribute(const char* name, unsigned defaultValue) const 
+{
+	unsigned i = defaultValue;
+	QueryUnsignedAttribute(name, &i);
+	return i;
+}
+
+int64_t XMLElement::Int64Attribute(const char* name, int64_t defaultValue) const 
+{
+	int64_t i = defaultValue;
+	QueryInt64Attribute(name, &i);
+	return i;
+}
+
+bool XMLElement::BoolAttribute(const char* name, bool defaultValue) const 
+{
+	bool b = defaultValue;
+	QueryBoolAttribute(name, &b);
+	return b;
+}
+
+double XMLElement::DoubleAttribute(const char* name, double defaultValue) const 
+{
+	double d = defaultValue;
+	QueryDoubleAttribute(name, &d);
+	return d;
+}
+
+float XMLElement::FloatAttribute(const char* name, float defaultValue) const 
+{
+	float f = defaultValue;
+	QueryFloatAttribute(name, &f);
+	return f;
+}
+
+const char* XMLElement::GetText() const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        return FirstChild()->Value();
+    }
+    return 0;
+}
+
+
+void	XMLElement::SetText( const char* inText )
+{
+	if ( FirstChild() && FirstChild()->ToText() )
+		FirstChild()->SetValue( inText );
+	else {
+		XMLText*	theText = GetDocument()->NewText( inText );
+		InsertFirstChild( theText );
+	}
+}
+
+
+void XMLElement::SetText( int v ) 
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    SetText( buf );
+}
+
+
+void XMLElement::SetText( unsigned v ) 
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    SetText( buf );
+}
+
+
+void XMLElement::SetText(int64_t v)
+{
+	char buf[BUF_SIZE];
+	XMLUtil::ToStr(v, buf, BUF_SIZE);
+	SetText(buf);
+}
+
+
+void XMLElement::SetText( bool v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    SetText( buf );
+}
+
+
+void XMLElement::SetText( float v ) 
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    SetText( buf );
+}
+
+
+void XMLElement::SetText( double v ) 
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    SetText( buf );
+}
+
+
+XMLError XMLElement::QueryIntText( int* ival ) const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        const char* t = FirstChild()->Value();
+        if ( XMLUtil::ToInt( t, ival ) ) {
+            return XML_SUCCESS;
+        }
+        return XML_CAN_NOT_CONVERT_TEXT;
+    }
+    return XML_NO_TEXT_NODE;
+}
+
+
+XMLError XMLElement::QueryUnsignedText( unsigned* uval ) const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        const char* t = FirstChild()->Value();
+        if ( XMLUtil::ToUnsigned( t, uval ) ) {
+            return XML_SUCCESS;
+        }
+        return XML_CAN_NOT_CONVERT_TEXT;
+    }
+    return XML_NO_TEXT_NODE;
+}
+
+
+XMLError XMLElement::QueryInt64Text(int64_t* ival) const
+{
+	if (FirstChild() && FirstChild()->ToText()) {
+		const char* t = FirstChild()->Value();
+		if (XMLUtil::ToInt64(t, ival)) {
+			return XML_SUCCESS;
+		}
+		return XML_CAN_NOT_CONVERT_TEXT;
+	}
+	return XML_NO_TEXT_NODE;
+}
+
+
+XMLError XMLElement::QueryBoolText( bool* bval ) const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        const char* t = FirstChild()->Value();
+        if ( XMLUtil::ToBool( t, bval ) ) {
+            return XML_SUCCESS;
+        }
+        return XML_CAN_NOT_CONVERT_TEXT;
+    }
+    return XML_NO_TEXT_NODE;
+}
+
+
+XMLError XMLElement::QueryDoubleText( double* dval ) const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        const char* t = FirstChild()->Value();
+        if ( XMLUtil::ToDouble( t, dval ) ) {
+            return XML_SUCCESS;
+        }
+        return XML_CAN_NOT_CONVERT_TEXT;
+    }
+    return XML_NO_TEXT_NODE;
+}
+
+
+XMLError XMLElement::QueryFloatText( float* fval ) const
+{
+    if ( FirstChild() && FirstChild()->ToText() ) {
+        const char* t = FirstChild()->Value();
+        if ( XMLUtil::ToFloat( t, fval ) ) {
+            return XML_SUCCESS;
+        }
+        return XML_CAN_NOT_CONVERT_TEXT;
+    }
+    return XML_NO_TEXT_NODE;
+}
+
+int XMLElement::IntText(int defaultValue) const
+{
+	int i = defaultValue;
+	QueryIntText(&i);
+	return i;
+}
+
+unsigned XMLElement::UnsignedText(unsigned defaultValue) const
+{
+	unsigned i = defaultValue;
+	QueryUnsignedText(&i);
+	return i;
+}
+
+int64_t XMLElement::Int64Text(int64_t defaultValue) const
+{
+	int64_t i = defaultValue;
+	QueryInt64Text(&i);
+	return i;
+}
+
+bool XMLElement::BoolText(bool defaultValue) const
+{
+	bool b = defaultValue;
+	QueryBoolText(&b);
+	return b;
+}
+
+double XMLElement::DoubleText(double defaultValue) const
+{
+	double d = defaultValue;
+	QueryDoubleText(&d);
+	return d;
+}
+
+float XMLElement::FloatText(float defaultValue) const
+{
+	float f = defaultValue;
+	QueryFloatText(&f);
+	return f;
+}
+
+
+XMLAttribute* XMLElement::FindOrCreateAttribute( const char* name )
+{
+    XMLAttribute* last = 0;
+    XMLAttribute* attrib = 0;
+    for( attrib = _rootAttribute;
+            attrib;
+            last = attrib, attrib = attrib->_next ) {
+        if ( XMLUtil::StringEqual( attrib->Name(), name ) ) {
+            break;
+        }
+    }
+    if ( !attrib ) {
+        attrib = CreateAttribute();
+        TIXMLASSERT( attrib );
+        if ( last ) {
+            TIXMLASSERT( last->_next == 0 );
+            last->_next = attrib;
+        }
+        else {
+            TIXMLASSERT( _rootAttribute == 0 );
+            _rootAttribute = attrib;
+        }
+        attrib->SetName( name );
+    }
+    return attrib;
+}
+
+
+void XMLElement::DeleteAttribute( const char* name )
+{
+    XMLAttribute* prev = 0;
+    for( XMLAttribute* a=_rootAttribute; a; a=a->_next ) {
+        if ( XMLUtil::StringEqual( name, a->Name() ) ) {
+            if ( prev ) {
+                prev->_next = a->_next;
+            }
+            else {
+                _rootAttribute = a->_next;
+            }
+            DeleteAttribute( a );
+            break;
+        }
+        prev = a;
+    }
+}
+
+
+char* XMLElement::ParseAttributes( char* p, int* curLineNumPtr )
+{
+    const char* start = p;
+    XMLAttribute* prevAttribute = 0;
+
+    // Read the attributes.
+    while( p ) {
+        p = XMLUtil::SkipWhiteSpace( p, curLineNumPtr );
+        if ( !(*p) ) {
+            _document->SetError( XML_ERROR_PARSING_ELEMENT, start, Name(), _parseLineNum );
+            return 0;
+        }
+
+        // attribute.
+        if (XMLUtil::IsNameStartChar( *p ) ) {
+            XMLAttribute* attrib = CreateAttribute();
+            TIXMLASSERT( attrib );
+            attrib->_parseLineNum = _document->_parseCurLineNum;
+
+            int attrLineNum = attrib->_parseLineNum;
+
+            p = attrib->ParseDeep( p, _document->ProcessEntities(), curLineNumPtr );
+            if ( !p || Attribute( attrib->Name() ) ) {
+                DeleteAttribute( attrib );
+                _document->SetError( XML_ERROR_PARSING_ATTRIBUTE, start, p, attrLineNum );
+                return 0;
+            }
+            // There is a minor bug here: if the attribute in the source xml
+            // document is duplicated, it will not be detected and the
+            // attribute will be doubly added. However, tracking the 'prevAttribute'
+            // avoids re-scanning the attribute list. Preferring performance for
+            // now, may reconsider in the future.
+            if ( prevAttribute ) {
+                TIXMLASSERT( prevAttribute->_next == 0 );
+                prevAttribute->_next = attrib;
+            }
+            else {
+                TIXMLASSERT( _rootAttribute == 0 );
+                _rootAttribute = attrib;
+            }
+            prevAttribute = attrib;
+        }
+        // end of the tag
+        else if ( *p == '>' ) {
+            ++p;
+            break;
+        }
+        // end of the tag
+        else if ( *p == '/' && *(p+1) == '>' ) {
+            _closingType = CLOSED;
+            return p+2;	// done; sealed element.
+        }
+        else {
+            _document->SetError( XML_ERROR_PARSING_ELEMENT, start, p, _parseLineNum );
+            return 0;
+        }
+    }
+    return p;
+}
+
+void XMLElement::DeleteAttribute( XMLAttribute* attribute )
+{
+    if ( attribute == 0 ) {
+        return;
+    }
+    MemPool* pool = attribute->_memPool;
+    attribute->~XMLAttribute();
+    pool->Free( attribute );
+}
+
+XMLAttribute* XMLElement::CreateAttribute()
+{
+    TIXMLASSERT( sizeof( XMLAttribute ) == _document->_attributePool.ItemSize() );
+    XMLAttribute* attrib = new (_document->_attributePool.Alloc() ) XMLAttribute();
+    attrib->_memPool = &_document->_attributePool;
+    attrib->_memPool->SetTracked();
+    return attrib;
+}
+
+//
+//	<ele></ele>
+//	<ele>foo<b>bar</b></ele>
+//
+char* XMLElement::ParseDeep( char* p, StrPair* strPair, int* curLineNumPtr )
+{
+    // Read the element name.
+    p = XMLUtil::SkipWhiteSpace( p, curLineNumPtr );
+
+    // The closing element is the </element> form. It is
+    // parsed just like a regular element then deleted from
+    // the DOM.
+    if ( *p == '/' ) {
+        _closingType = CLOSING;
+        ++p;
+    }
+
+    p = _value.ParseName( p );
+    if ( _value.Empty() ) {
+        return 0;
+    }
+
+    p = ParseAttributes( p, curLineNumPtr );
+    if ( !p || !*p || _closingType ) {
+        return p;
+    }
+
+    p = XMLNode::ParseDeep( p, strPair, curLineNumPtr );
+    return p;
+}
+
+
+
+XMLNode* XMLElement::ShallowClone( XMLDocument* doc ) const
+{
+    if ( !doc ) {
+        doc = _document;
+    }
+    XMLElement* element = doc->NewElement( Value() );					// fixme: this will always allocate memory. Intern?
+    for( const XMLAttribute* a=FirstAttribute(); a; a=a->Next() ) {
+        element->SetAttribute( a->Name(), a->Value() );					// fixme: this will always allocate memory. Intern?
+    }
+    return element;
+}
+
+
+bool XMLElement::ShallowEqual( const XMLNode* compare ) const
+{
+    TIXMLASSERT( compare );
+    const XMLElement* other = compare->ToElement();
+    if ( other && XMLUtil::StringEqual( other->Name(), Name() )) {
+
+        const XMLAttribute* a=FirstAttribute();
+        const XMLAttribute* b=other->FirstAttribute();
+
+        while ( a && b ) {
+            if ( !XMLUtil::StringEqual( a->Value(), b->Value() ) ) {
+                return false;
+            }
+            a = a->Next();
+            b = b->Next();
+        }
+        if ( a || b ) {
+            // different count
+            return false;
+        }
+        return true;
+    }
+    return false;
+}
+
+
+bool XMLElement::Accept( XMLVisitor* visitor ) const
+{
+    TIXMLASSERT( visitor );
+    if ( visitor->VisitEnter( *this, _rootAttribute ) ) {
+        for ( const XMLNode* node=FirstChild(); node; node=node->NextSibling() ) {
+            if ( !node->Accept( visitor ) ) {
+                break;
+            }
+        }
+    }
+    return visitor->VisitExit( *this );
+}
+
+
+// --------- XMLDocument ----------- //
+
+// Warning: List must match 'enum XMLError'
+const char* XMLDocument::_errorNames[XML_ERROR_COUNT] = {
+    "XML_SUCCESS",
+    "XML_NO_ATTRIBUTE",
+    "XML_WRONG_ATTRIBUTE_TYPE",
+    "XML_ERROR_FILE_NOT_FOUND",
+    "XML_ERROR_FILE_COULD_NOT_BE_OPENED",
+    "XML_ERROR_FILE_READ_ERROR",
+    "XML_ERROR_ELEMENT_MISMATCH",
+    "XML_ERROR_PARSING_ELEMENT",
+    "XML_ERROR_PARSING_ATTRIBUTE",
+    "XML_ERROR_IDENTIFYING_TAG",
+    "XML_ERROR_PARSING_TEXT",
+    "XML_ERROR_PARSING_CDATA",
+    "XML_ERROR_PARSING_COMMENT",
+    "XML_ERROR_PARSING_DECLARATION",
+    "XML_ERROR_PARSING_UNKNOWN",
+    "XML_ERROR_EMPTY_DOCUMENT",
+    "XML_ERROR_MISMATCHED_ELEMENT",
+    "XML_ERROR_PARSING",
+    "XML_CAN_NOT_CONVERT_TEXT",
+    "XML_NO_TEXT_NODE"
+};
+
+
+XMLDocument::XMLDocument( bool processEntities, Whitespace whitespace ) :
+    XMLNode( 0 ),
+    _writeBOM( false ),
+    _processEntities( processEntities ),
+    _errorID(XML_SUCCESS),
+    _whitespace( whitespace ),
+    _errorLineNum( 0 ),
+    _charBuffer( 0 ),
+    _parseCurLineNum( 0 )
+{
+    // avoid VC++ C4355 warning about 'this' in initializer list (C4355 is off by default in VS2012+)
+    _document = this;
+}
+
+
+XMLDocument::~XMLDocument()
+{
+    Clear();
+}
+
+
+void XMLDocument::Clear()
+{
+    DeleteChildren();
+
+#ifdef DEBUG
+    const bool hadError = Error();
+#endif
+    ClearError();
+
+    delete [] _charBuffer;
+    _charBuffer = 0;
+
+#if 0
+    _textPool.Trace( "text" );
+    _elementPool.Trace( "element" );
+    _commentPool.Trace( "comment" );
+    _attributePool.Trace( "attribute" );
+#endif
+    
+#ifdef DEBUG
+    if ( !hadError ) {
+        TIXMLASSERT( _elementPool.CurrentAllocs()   == _elementPool.Untracked() );
+        TIXMLASSERT( _attributePool.CurrentAllocs() == _attributePool.Untracked() );
+        TIXMLASSERT( _textPool.CurrentAllocs()      == _textPool.Untracked() );
+        TIXMLASSERT( _commentPool.CurrentAllocs()   == _commentPool.Untracked() );
+    }
+#endif
+}
+
+
+XMLElement* XMLDocument::NewElement( const char* name )
+{
+    XMLElement* ele = CreateUnlinkedNode<XMLElement>( _elementPool );
+    ele->SetName( name );
+    return ele;
+}
+
+
+XMLComment* XMLDocument::NewComment( const char* str )
+{
+    XMLComment* comment = CreateUnlinkedNode<XMLComment>( _commentPool );
+    comment->SetValue( str );
+    return comment;
+}
+
+
+XMLText* XMLDocument::NewText( const char* str )
+{
+    XMLText* text = CreateUnlinkedNode<XMLText>( _textPool );
+    text->SetValue( str );
+    return text;
+}
+
+
+XMLDeclaration* XMLDocument::NewDeclaration( const char* str )
+{
+    XMLDeclaration* dec = CreateUnlinkedNode<XMLDeclaration>( _commentPool );
+    dec->SetValue( str ? str : "xml version=\"1.0\" encoding=\"UTF-8\"" );
+    return dec;
+}
+
+
+XMLUnknown* XMLDocument::NewUnknown( const char* str )
+{
+    XMLUnknown* unk = CreateUnlinkedNode<XMLUnknown>( _commentPool );
+    unk->SetValue( str );
+    return unk;
+}
+
+static FILE* callfopen( const char* filepath, const char* mode )
+{
+    TIXMLASSERT( filepath );
+    TIXMLASSERT( mode );
+#if defined(_MSC_VER) && (_MSC_VER >= 1400 ) && (!defined WINCE)
+    FILE* fp = 0;
+    errno_t err = fopen_s( &fp, filepath, mode );
+    if ( err ) {
+        return 0;
+    }
+#else
+    FILE* fp = fopen( filepath, mode );
+#endif
+    return fp;
+}
+    
+void XMLDocument::DeleteNode( XMLNode* node )	{
+    TIXMLASSERT( node );
+    TIXMLASSERT(node->_document == this );
+    if (node->_parent) {
+        node->_parent->DeleteChild( node );
+    }
+    else {
+        // Isn't in the tree.
+        // Use the parent delete.
+        // Also, we need to mark it tracked: we 'know'
+        // it was never used.
+        node->_memPool->SetTracked();
+        // Call the static XMLNode version:
+        XMLNode::DeleteNode(node);
+    }
+}
+
+
+XMLError XMLDocument::LoadFile( const char* filename )
+{
+    Clear();
+    FILE* fp = callfopen( filename, "rb" );
+    if ( !fp ) {
+        SetError( XML_ERROR_FILE_NOT_FOUND, filename, 0, 0 );
+        return _errorID;
+    }
+    LoadFile( fp );
+    fclose( fp );
+    return _errorID;
+}
+
+// This is likely overengineered template art to have a check that unsigned long value incremented
+// by one still fits into size_t. If size_t type is larger than unsigned long type
+// (x86_64-w64-mingw32 target) then the check is redundant and gcc and clang emit
+// -Wtype-limits warning. This piece makes the compiler select code with a check when a check
+// is useful and code with no check when a check is redundant depending on how size_t and unsigned long
+// types sizes relate to each other.
+template
+<bool = (sizeof(unsigned long) >= sizeof(size_t))>
+struct LongFitsIntoSizeTMinusOne {
+    static bool Fits( unsigned long value )
+    {
+        return value < (size_t)-1;
+    }
+};
+
+template <>
+struct LongFitsIntoSizeTMinusOne<false> {
+    static bool Fits( unsigned long )
+    {
+        return true;
+    }
+};
+
+XMLError XMLDocument::LoadFile( FILE* fp )
+{
+    Clear();
+
+    fseek( fp, 0, SEEK_SET );
+    if ( fgetc( fp ) == EOF && ferror( fp ) != 0 ) {
+        SetError( XML_ERROR_FILE_READ_ERROR, 0, 0, 0 );
+        return _errorID;
+    }
+
+    fseek( fp, 0, SEEK_END );
+    const long filelength = ftell( fp );
+    fseek( fp, 0, SEEK_SET );
+    if ( filelength == -1L ) {
+        SetError( XML_ERROR_FILE_READ_ERROR, 0, 0, 0 );
+        return _errorID;
+    }
+    TIXMLASSERT( filelength >= 0 );
+
+    if ( !LongFitsIntoSizeTMinusOne<>::Fits( filelength ) ) {
+        // Cannot handle files which won't fit in buffer together with null terminator
+        SetError( XML_ERROR_FILE_READ_ERROR, 0, 0, 0 );
+        return _errorID;
+    }
+
+    if ( filelength == 0 ) {
+        SetError( XML_ERROR_EMPTY_DOCUMENT, 0, 0, 0 );
+        return _errorID;
+    }
+
+    const size_t size = filelength;
+    TIXMLASSERT( _charBuffer == 0 );
+    _charBuffer = new char[size+1];
+    size_t read = fread( _charBuffer, 1, size, fp );
+    if ( read != size ) {
+        SetError( XML_ERROR_FILE_READ_ERROR, 0, 0, 0 );
+        return _errorID;
+    }
+
+    _charBuffer[size] = 0;
+
+    Parse();
+    return _errorID;
+}
+
+
+XMLError XMLDocument::SaveFile( const char* filename, bool compact )
+{
+    FILE* fp = callfopen( filename, "w" );
+    if ( !fp ) {
+        SetError( XML_ERROR_FILE_COULD_NOT_BE_OPENED, filename, 0, 0 );
+        return _errorID;
+    }
+    SaveFile(fp, compact);
+    fclose( fp );
+    return _errorID;
+}
+
+
+XMLError XMLDocument::SaveFile( FILE* fp, bool compact )
+{
+    // Clear any error from the last save, otherwise it will get reported
+    // for *this* call.
+    ClearError();
+    XMLPrinter stream( fp, compact );
+    Print( &stream );
+    return _errorID;
+}
+
+
+XMLError XMLDocument::Parse( const char* p, size_t len )
+{
+    Clear();
+
+    if ( len == 0 || !p || !*p ) {
+        SetError( XML_ERROR_EMPTY_DOCUMENT, 0, 0, 0 );
+        return _errorID;
+    }
+    if ( len == (size_t)(-1) ) {
+        len = strlen( p );
+    }
+    TIXMLASSERT( _charBuffer == 0 );
+    _charBuffer = new char[ len+1 ];
+    memcpy( _charBuffer, p, len );
+    _charBuffer[len] = 0;
+
+    Parse();
+    if ( Error() ) {
+        // clean up now essentially dangling memory.
+        // and the parse fail can put objects in the
+        // pools that are dead and inaccessible.
+        DeleteChildren();
+        _elementPool.Clear();
+        _attributePool.Clear();
+        _textPool.Clear();
+        _commentPool.Clear();
+    }
+    return _errorID;
+}
+
+
+void XMLDocument::Print( XMLPrinter* streamer ) const
+{
+    if ( streamer ) {
+        Accept( streamer );
+    }
+    else {
+        XMLPrinter stdoutStreamer( stdout );
+        Accept( &stdoutStreamer );
+    }
+}
+
+
+void XMLDocument::SetError( XMLError error, const char* str1, const char* str2, int lineNum )
+{
+    TIXMLASSERT( error >= 0 && error < XML_ERROR_COUNT );
+    _errorID = error;
+	
+	_errorStr1.Reset();
+	_errorStr2.Reset();
+    _errorLineNum = lineNum;
+
+	if (str1)
+		_errorStr1.SetStr(str1);
+	if (str2)
+		_errorStr2.SetStr(str2);
+}
+
+/*static*/ const char* XMLDocument::ErrorIDToName(XMLError errorID)
+{
+	TIXMLASSERT( errorID >= 0 && errorID < XML_ERROR_COUNT );
+    const char* errorName = _errorNames[errorID];
+    TIXMLASSERT( errorName && errorName[0] );
+    return errorName;
+}
+
+const char* XMLDocument::ErrorName() const
+{
+    return ErrorIDToName(_errorID);
+}
+
+void XMLDocument::PrintError() const
+{
+    if ( Error() ) {
+        static const int LEN = 20;
+        char buf1[LEN] = { 0 };
+        char buf2[LEN] = { 0 };
+
+        if ( !_errorStr1.Empty() ) {
+            TIXML_SNPRINTF( buf1, LEN, "%s", _errorStr1.GetStr() );
+        }
+        if ( !_errorStr2.Empty() ) {
+            TIXML_SNPRINTF( buf2, LEN, "%s", _errorStr2.GetStr() );
+        }
+
+        // Should check INT_MIN <= _errorID && _errorId <= INT_MAX, but that
+        // causes a clang "always true" -Wtautological-constant-out-of-range-compare warning
+        TIXMLASSERT( 0 <= _errorID && XML_ERROR_COUNT - 1 <= INT_MAX );
+        printf( "XMLDocument error id=%d '%s' str1=%s str2=%s line=%d\n",
+                static_cast<int>( _errorID ), ErrorName(), buf1, buf2, _errorLineNum );
+    }
+}
+
+void XMLDocument::Parse()
+{
+    TIXMLASSERT( NoChildren() ); // Clear() must have been called previously
+    TIXMLASSERT( _charBuffer );
+    _parseCurLineNum = 1;
+    _parseLineNum = 1;
+    char* p = _charBuffer;
+    p = XMLUtil::SkipWhiteSpace( p, &_parseCurLineNum );
+    p = const_cast<char*>( XMLUtil::ReadBOM( p, &_writeBOM ) );
+    if ( !*p ) {
+        SetError( XML_ERROR_EMPTY_DOCUMENT, 0, 0, 0 );
+        return;
+    }
+    ParseDeep(p, 0, &_parseCurLineNum );
+}
+
+XMLPrinter::XMLPrinter( FILE* file, bool compact, int depth ) :
+    _elementJustOpened( false ),
+    _firstElement( true ),
+    _fp( file ),
+    _depth( depth ),
+    _textDepth( -1 ),
+    _processEntities( true ),
+    _compactMode( compact )
+{
+    for( int i=0; i<ENTITY_RANGE; ++i ) {
+        _entityFlag[i] = false;
+        _restrictedEntityFlag[i] = false;
+    }
+    for( int i=0; i<NUM_ENTITIES; ++i ) {
+        const char entityValue = entities[i].value;
+        TIXMLASSERT( ((unsigned char)entityValue) < ENTITY_RANGE );
+        _entityFlag[ (unsigned char)entityValue ] = true;
+    }
+    _restrictedEntityFlag[(unsigned char)'&'] = true;
+    _restrictedEntityFlag[(unsigned char)'<'] = true;
+    _restrictedEntityFlag[(unsigned char)'>'] = true;	// not required, but consistency is nice
+    _buffer.Push( 0 );
+}
+
+
+void XMLPrinter::Print( const char* format, ... )
+{
+    va_list     va;
+    va_start( va, format );
+
+    if ( _fp ) {
+        vfprintf( _fp, format, va );
+    }
+    else {
+        const int len = TIXML_VSCPRINTF( format, va );
+        // Close out and re-start the va-args
+        va_end( va );
+        TIXMLASSERT( len >= 0 );
+        va_start( va, format );
+        TIXMLASSERT( _buffer.Size() > 0 && _buffer[_buffer.Size() - 1] == 0 );
+        char* p = _buffer.PushArr( len ) - 1;	// back up over the null terminator.
+		TIXML_VSNPRINTF( p, len+1, format, va );
+    }
+    va_end( va );
+}
+
+
+void XMLPrinter::PrintSpace( int depth )
+{
+    for( int i=0; i<depth; ++i ) {
+        Print( "    " );
+    }
+}
+
+
+void XMLPrinter::PrintString( const char* p, bool restricted )
+{
+    // Look for runs of bytes between entities to print.
+    const char* q = p;
+
+    if ( _processEntities ) {
+        const bool* flag = restricted ? _restrictedEntityFlag : _entityFlag;
+        while ( *q ) {
+            TIXMLASSERT( p <= q );
+            // Remember, char is sometimes signed. (How many times has that bitten me?)
+            if ( *q > 0 && *q < ENTITY_RANGE ) {
+                // Check for entities. If one is found, flush
+                // the stream up until the entity, write the
+                // entity, and keep looking.
+                if ( flag[(unsigned char)(*q)] ) {
+                    while ( p < q ) {
+                        const size_t delta = q - p;
+                        // %.*s accepts type int as "precision"
+                        const int toPrint = ( INT_MAX < delta ) ? INT_MAX : (int)delta;
+                        Print( "%.*s", toPrint, p );
+                        p += toPrint;
+                    }
+                    bool entityPatternPrinted = false;
+                    for( int i=0; i<NUM_ENTITIES; ++i ) {
+                        if ( entities[i].value == *q ) {
+                            Print( "&%s;", entities[i].pattern );
+                            entityPatternPrinted = true;
+                            break;
+                        }
+                    }
+                    if ( !entityPatternPrinted ) {
+                        // TIXMLASSERT( entityPatternPrinted ) causes gcc -Wunused-but-set-variable in release
+                        TIXMLASSERT( false );
+                    }
+                    ++p;
+                }
+            }
+            ++q;
+            TIXMLASSERT( p <= q );
+        }
+    }
+    // Flush the remaining string. This will be the entire
+    // string if an entity wasn't found.
+    TIXMLASSERT( p <= q );
+    if ( !_processEntities || ( p < q ) ) {
+        Print( "%s", p );
+    }
+}
+
+
+void XMLPrinter::PushHeader( bool writeBOM, bool writeDec )
+{
+    if ( writeBOM ) {
+        static const unsigned char bom[] = { TIXML_UTF_LEAD_0, TIXML_UTF_LEAD_1, TIXML_UTF_LEAD_2, 0 };
+        Print( "%s", bom );
+    }
+    if ( writeDec ) {
+        PushDeclaration( "xml version=\"1.0\"" );
+    }
+}
+
+
+void XMLPrinter::OpenElement( const char* name, bool compactMode )
+{
+    SealElementIfJustOpened();
+    _stack.Push( name );
+
+    if ( _textDepth < 0 && !_firstElement && !compactMode ) {
+        Print( "\n" );
+    }
+    if ( !compactMode ) {
+        PrintSpace( _depth );
+    }
+
+    Print( "<%s", name );
+    _elementJustOpened = true;
+    _firstElement = false;
+    ++_depth;
+}
+
+
+void XMLPrinter::PushAttribute( const char* name, const char* value )
+{
+    TIXMLASSERT( _elementJustOpened );
+    Print( " %s=\"", name );
+    PrintString( value, false );
+    Print( "\"" );
+}
+
+
+void XMLPrinter::PushAttribute( const char* name, int v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    PushAttribute( name, buf );
+}
+
+
+void XMLPrinter::PushAttribute( const char* name, unsigned v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    PushAttribute( name, buf );
+}
+
+
+void XMLPrinter::PushAttribute(const char* name, int64_t v)
+{
+	char buf[BUF_SIZE];
+	XMLUtil::ToStr(v, buf, BUF_SIZE);
+	PushAttribute(name, buf);
+}
+
+
+void XMLPrinter::PushAttribute( const char* name, bool v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    PushAttribute( name, buf );
+}
+
+
+void XMLPrinter::PushAttribute( const char* name, double v )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( v, buf, BUF_SIZE );
+    PushAttribute( name, buf );
+}
+
+
+void XMLPrinter::CloseElement( bool compactMode )
+{
+    --_depth;
+    const char* name = _stack.Pop();
+
+    if ( _elementJustOpened ) {
+        Print( "/>" );
+    }
+    else {
+        if ( _textDepth < 0 && !compactMode) {
+            Print( "\n" );
+            PrintSpace( _depth );
+        }
+        Print( "</%s>", name );
+    }
+
+    if ( _textDepth == _depth ) {
+        _textDepth = -1;
+    }
+    if ( _depth == 0 && !compactMode) {
+        Print( "\n" );
+    }
+    _elementJustOpened = false;
+}
+
+
+void XMLPrinter::SealElementIfJustOpened()
+{
+    if ( !_elementJustOpened ) {
+        return;
+    }
+    _elementJustOpened = false;
+    Print( ">" );
+}
+
+
+void XMLPrinter::PushText( const char* text, bool cdata )
+{
+    _textDepth = _depth-1;
+
+    SealElementIfJustOpened();
+    if ( cdata ) {
+        Print( "<![CDATA[%s]]>", text );
+    }
+    else {
+        PrintString( text, true );
+    }
+}
+
+void XMLPrinter::PushText( int64_t value )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( value, buf, BUF_SIZE );
+    PushText( buf, false );
+}
+
+void XMLPrinter::PushText( int value )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( value, buf, BUF_SIZE );
+    PushText( buf, false );
+}
+
+
+void XMLPrinter::PushText( unsigned value )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( value, buf, BUF_SIZE );
+    PushText( buf, false );
+}
+
+
+void XMLPrinter::PushText( bool value )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( value, buf, BUF_SIZE );
+    PushText( buf, false );
+}
+
+
+void XMLPrinter::PushText( float value )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( value, buf, BUF_SIZE );
+    PushText( buf, false );
+}
+
+
+void XMLPrinter::PushText( double value )
+{
+    char buf[BUF_SIZE];
+    XMLUtil::ToStr( value, buf, BUF_SIZE );
+    PushText( buf, false );
+}
+
+
+void XMLPrinter::PushComment( const char* comment )
+{
+    SealElementIfJustOpened();
+    if ( _textDepth < 0 && !_firstElement && !_compactMode) {
+        Print( "\n" );
+        PrintSpace( _depth );
+    }
+    _firstElement = false;
+    Print( "<!--%s-->", comment );
+}
+
+
+void XMLPrinter::PushDeclaration( const char* value )
+{
+    SealElementIfJustOpened();
+    if ( _textDepth < 0 && !_firstElement && !_compactMode) {
+        Print( "\n" );
+        PrintSpace( _depth );
+    }
+    _firstElement = false;
+    Print( "<?%s?>", value );
+}
+
+
+void XMLPrinter::PushUnknown( const char* value )
+{
+    SealElementIfJustOpened();
+    if ( _textDepth < 0 && !_firstElement && !_compactMode) {
+        Print( "\n" );
+        PrintSpace( _depth );
+    }
+    _firstElement = false;
+    Print( "<!%s>", value );
+}
+
+
+bool XMLPrinter::VisitEnter( const XMLDocument& doc )
+{
+    _processEntities = doc.ProcessEntities();
+    if ( doc.HasBOM() ) {
+        PushHeader( true, false );
+    }
+    return true;
+}
+
+
+bool XMLPrinter::VisitEnter( const XMLElement& element, const XMLAttribute* attribute )
+{
+    const XMLElement* parentElem = 0;
+    if ( element.Parent() ) {
+        parentElem = element.Parent()->ToElement();
+    }
+    const bool compactMode = parentElem ? CompactMode( *parentElem ) : _compactMode;
+    OpenElement( element.Name(), compactMode );
+    while ( attribute ) {
+        PushAttribute( attribute->Name(), attribute->Value() );
+        attribute = attribute->Next();
+    }
+    return true;
+}
+
+
+bool XMLPrinter::VisitExit( const XMLElement& element )
+{
+    CloseElement( CompactMode(element) );
+    return true;
+}
+
+
+bool XMLPrinter::Visit( const XMLText& text )
+{
+    PushText( text.Value(), text.CData() );
+    return true;
+}
+
+
+bool XMLPrinter::Visit( const XMLComment& comment )
+{
+    PushComment( comment.Value() );
+    return true;
+}
+
+bool XMLPrinter::Visit( const XMLDeclaration& declaration )
+{
+    PushDeclaration( declaration.Value() );
+    return true;
+}
+
+
+bool XMLPrinter::Visit( const XMLUnknown& unknown )
+{
+    PushUnknown( unknown.Value() );
+    return true;
+}
+
+}   // namespace tinyxml2
+
diff --git a/tinyxml2.h b/tinyxml2.h
new file mode 100644
index 0000000..2b4826d
--- /dev/null
+++ b/tinyxml2.h
@@ -0,0 +1,2221 @@
+/*
+Original code by Lee Thomason (www.grinninglizard.com)
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any
+damages arising from the use of this software.
+
+Permission is granted to anyone to use this software for any
+purpose, including commercial applications, and to alter it and
+redistribute it freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must
+not claim that you wrote the original software. If you use this
+software in a product, an acknowledgment in the product documentation
+would be appreciated but is not required.
+
+2. Altered source versions must be plainly marked as such, and
+must not be misrepresented as being the original software.
+
+3. This notice may not be removed or altered from any source
+distribution.
+*/
+
+#ifndef TINYXML2_INCLUDED
+#define TINYXML2_INCLUDED
+
+#if defined(ANDROID_NDK) || defined(__BORLANDC__) || defined(__QNXNTO__)
+#   include <ctype.h>
+#   include <limits.h>
+#   include <stdio.h>
+#   include <stdlib.h>
+#   include <string.h>
+#	if defined(__PS3__)
+#		include <stddef.h>
+#	endif
+#else
+#   include <cctype>
+#   include <climits>
+#   include <cstdio>
+#   include <cstdlib>
+#   include <cstring>
+#endif
+#include <stdint.h>
+
+/*
+   TODO: intern strings instead of allocation.
+*/
+/*
+	gcc:
+        g++ -Wall -DDEBUG tinyxml2.cpp xmltest.cpp -o gccxmltest.exe
+
+    Formatting, Artistic Style:
+        AStyle.exe --style=1tbs --indent-switches --break-closing-brackets --indent-preprocessor tinyxml2.cpp tinyxml2.h
+*/
+
+#if defined( _DEBUG ) || defined( DEBUG ) || defined (__DEBUG__)
+#   ifndef DEBUG
+#       define DEBUG
+#   endif
+#endif
+
+#ifdef _MSC_VER
+#   pragma warning(push)
+#   pragma warning(disable: 4251)
+#endif
+
+#ifdef _WIN32
+#   ifdef TINYXML2_EXPORT
+#       define TINYXML2_LIB __declspec(dllexport)
+#   elif defined(TINYXML2_IMPORT)
+#       define TINYXML2_LIB __declspec(dllimport)
+#   else
+#       define TINYXML2_LIB
+#   endif
+#elif __GNUC__ >= 4
+#   define TINYXML2_LIB __attribute__((visibility("default")))
+#else
+#   define TINYXML2_LIB
+#endif
+
+
+#if defined(DEBUG)
+#   if defined(_MSC_VER)
+#       // "(void)0," is for suppressing C4127 warning in "assert(false)", "assert(true)" and the like
+#       define TIXMLASSERT( x )           if ( !((void)0,(x))) { __debugbreak(); }
+#   elif defined (ANDROID_NDK)
+#       include <android/log.h>
+#       define TIXMLASSERT( x )           if ( !(x)) { __android_log_assert( "assert", "grinliz", "ASSERT in '%s' at %d.", __FILE__, __LINE__ ); }
+#   else
+#       include <assert.h>
+#       define TIXMLASSERT                assert
+#   endif
+#else
+#   define TIXMLASSERT( x )               {}
+#endif
+
+
+/* Versioning, past 1.0.14:
+	http://semver.org/
+*/
+static const int TIXML2_MAJOR_VERSION = 4;
+static const int TIXML2_MINOR_VERSION = 0;
+static const int TIXML2_PATCH_VERSION = 1;
+
+namespace tinyxml2
+{
+class XMLDocument;
+class XMLElement;
+class XMLAttribute;
+class XMLComment;
+class XMLText;
+class XMLDeclaration;
+class XMLUnknown;
+class XMLPrinter;
+
+/*
+	A class that wraps strings. Normally stores the start and end
+	pointers into the XML file itself, and will apply normalization
+	and entity translation if actually read. Can also store (and memory
+	manage) a traditional char[]
+*/
+class StrPair
+{
+public:
+    enum {
+        NEEDS_ENTITY_PROCESSING			= 0x01,
+        NEEDS_NEWLINE_NORMALIZATION		= 0x02,
+        NEEDS_WHITESPACE_COLLAPSING     = 0x04,
+
+        TEXT_ELEMENT		            = NEEDS_ENTITY_PROCESSING | NEEDS_NEWLINE_NORMALIZATION,
+        TEXT_ELEMENT_LEAVE_ENTITIES		= NEEDS_NEWLINE_NORMALIZATION,
+        ATTRIBUTE_NAME		            = 0,
+        ATTRIBUTE_VALUE		            = NEEDS_ENTITY_PROCESSING | NEEDS_NEWLINE_NORMALIZATION,
+        ATTRIBUTE_VALUE_LEAVE_ENTITIES  = NEEDS_NEWLINE_NORMALIZATION,
+        COMMENT							= NEEDS_NEWLINE_NORMALIZATION
+    };
+
+    StrPair() : _flags( 0 ), _start( 0 ), _end( 0 ) {}
+    ~StrPair();
+
+    void Set( char* start, char* end, int flags ) {
+        TIXMLASSERT( start );
+        TIXMLASSERT( end );
+        Reset();
+        _start  = start;
+        _end    = end;
+        _flags  = flags | NEEDS_FLUSH;
+    }
+
+    const char* GetStr();
+
+    bool Empty() const {
+        return _start == _end;
+    }
+
+    void SetInternedStr( const char* str ) {
+        Reset();
+        _start = const_cast<char*>(str);
+    }
+
+    void SetStr( const char* str, int flags=0 );
+
+    char* ParseText( char* in, const char* endTag, int strFlags, int* curLineNumPtr );
+    char* ParseName( char* in );
+
+    void TransferTo( StrPair* other );
+	void Reset();
+
+private:
+    void CollapseWhitespace();
+
+    enum {
+        NEEDS_FLUSH = 0x100,
+        NEEDS_DELETE = 0x200
+    };
+
+    int     _flags;
+    char*   _start;
+    char*   _end;
+
+    StrPair( const StrPair& other );	// not supported
+    void operator=( StrPair& other );	// not supported, use TransferTo()
+};
+
+
+/*
+	A dynamic array of Plain Old Data. Doesn't support constructors, etc.
+	Has a small initial memory pool, so that low or no usage will not
+	cause a call to new/delete
+*/
+template <class T, int INITIAL_SIZE>
+class DynArray
+{
+public:
+    DynArray() {
+        _mem = _pool;
+        _allocated = INITIAL_SIZE;
+        _size = 0;
+    }
+
+    ~DynArray() {
+        if ( _mem != _pool ) {
+            delete [] _mem;
+        }
+    }
+
+    void Clear() {
+        _size = 0;
+    }
+
+    void Push( T t ) {
+        TIXMLASSERT( _size < INT_MAX );
+        EnsureCapacity( _size+1 );
+        _mem[_size] = t;
+        ++_size;
+    }
+
+    T* PushArr( int count ) {
+        TIXMLASSERT( count >= 0 );
+        TIXMLASSERT( _size <= INT_MAX - count );
+        EnsureCapacity( _size+count );
+        T* ret = &_mem[_size];
+        _size += count;
+        return ret;
+    }
+
+    T Pop() {
+        TIXMLASSERT( _size > 0 );
+        --_size;
+        return _mem[_size];
+    }
+
+    void PopArr( int count ) {
+        TIXMLASSERT( _size >= count );
+        _size -= count;
+    }
+
+    bool Empty() const					{
+        return _size == 0;
+    }
+
+    T& operator[](int i)				{
+        TIXMLASSERT( i>= 0 && i < _size );
+        return _mem[i];
+    }
+
+    const T& operator[](int i) const	{
+        TIXMLASSERT( i>= 0 && i < _size );
+        return _mem[i];
+    }
+
+    const T& PeekTop() const            {
+        TIXMLASSERT( _size > 0 );
+        return _mem[ _size - 1];
+    }
+
+    int Size() const					{
+        TIXMLASSERT( _size >= 0 );
+        return _size;
+    }
+
+    int Capacity() const				{
+        TIXMLASSERT( _allocated >= INITIAL_SIZE );
+        return _allocated;
+    }
+
+    const T* Mem() const				{
+        TIXMLASSERT( _mem );
+        return _mem;
+    }
+
+    T* Mem()							{
+        TIXMLASSERT( _mem );
+        return _mem;
+    }
+
+private:
+    DynArray( const DynArray& ); // not supported
+    void operator=( const DynArray& ); // not supported
+
+    void EnsureCapacity( int cap ) {
+        TIXMLASSERT( cap > 0 );
+        if ( cap > _allocated ) {
+            TIXMLASSERT( cap <= INT_MAX / 2 );
+            int newAllocated = cap * 2;
+            T* newMem = new T[newAllocated];
+            memcpy( newMem, _mem, sizeof(T)*_size );	// warning: not using constructors, only works for PODs
+            if ( _mem != _pool ) {
+                delete [] _mem;
+            }
+            _mem = newMem;
+            _allocated = newAllocated;
+        }
+    }
+
+    T*  _mem;
+    T   _pool[INITIAL_SIZE];
+    int _allocated;		// objects allocated
+    int _size;			// number objects in use
+};
+
+
+/*
+	Parent virtual class of a pool for fast allocation
+	and deallocation of objects.
+*/
+class MemPool
+{
+public:
+    MemPool() {}
+    virtual ~MemPool() {}
+
+    virtual int ItemSize() const = 0;
+    virtual void* Alloc() = 0;
+    virtual void Free( void* ) = 0;
+    virtual void SetTracked() = 0;
+    virtual void Clear() = 0;
+};
+
+
+/*
+	Template child class to create pools of the correct type.
+*/
+template< int ITEM_SIZE >
+class MemPoolT : public MemPool
+{
+public:
+    MemPoolT() : _root(0), _currentAllocs(0), _nAllocs(0), _maxAllocs(0), _nUntracked(0)	{}
+    ~MemPoolT() {
+        Clear();
+    }
+    
+    void Clear() {
+        // Delete the blocks.
+        while( !_blockPtrs.Empty()) {
+            Block* b  = _blockPtrs.Pop();
+            delete b;
+        }
+        _root = 0;
+        _currentAllocs = 0;
+        _nAllocs = 0;
+        _maxAllocs = 0;
+        _nUntracked = 0;
+    }
+
+    virtual int ItemSize() const	{
+        return ITEM_SIZE;
+    }
+    int CurrentAllocs() const		{
+        return _currentAllocs;
+    }
+
+    virtual void* Alloc() {
+        if ( !_root ) {
+            // Need a new block.
+            Block* block = new Block();
+            _blockPtrs.Push( block );
+
+            Item* blockItems = block->items;
+            for( int i = 0; i < ITEMS_PER_BLOCK - 1; ++i ) {
+                blockItems[i].next = &(blockItems[i + 1]);
+            }
+            blockItems[ITEMS_PER_BLOCK - 1].next = 0;
+            _root = blockItems;
+        }
+        Item* const result = _root;
+        TIXMLASSERT( result != 0 );
+        _root = _root->next;
+
+        ++_currentAllocs;
+        if ( _currentAllocs > _maxAllocs ) {
+            _maxAllocs = _currentAllocs;
+        }
+        ++_nAllocs;
+        ++_nUntracked;
+        return result;
+    }
+    
+    virtual void Free( void* mem ) {
+        if ( !mem ) {
+            return;
+        }
+        --_currentAllocs;
+        Item* item = static_cast<Item*>( mem );
+#ifdef DEBUG
+        memset( item, 0xfe, sizeof( *item ) );
+#endif
+        item->next = _root;
+        _root = item;
+    }
+    void Trace( const char* name ) {
+        printf( "Mempool %s watermark=%d [%dk] current=%d size=%d nAlloc=%d blocks=%d\n",
+                name, _maxAllocs, _maxAllocs * ITEM_SIZE / 1024, _currentAllocs,
+                ITEM_SIZE, _nAllocs, _blockPtrs.Size() );
+    }
+
+    void SetTracked() {
+        --_nUntracked;
+    }
+
+    int Untracked() const {
+        return _nUntracked;
+    }
+
+	// This number is perf sensitive. 4k seems like a good tradeoff on my machine.
+	// The test file is large, 170k.
+	// Release:		VS2010 gcc(no opt)
+	//		1k:		4000
+	//		2k:		4000
+	//		4k:		3900	21000
+	//		16k:	5200
+	//		32k:	4300
+	//		64k:	4000	21000
+    // Declared public because some compilers do not accept to use ITEMS_PER_BLOCK
+    // in private part if ITEMS_PER_BLOCK is private
+    enum { ITEMS_PER_BLOCK = (4 * 1024) / ITEM_SIZE };
+
+private:
+    MemPoolT( const MemPoolT& ); // not supported
+    void operator=( const MemPoolT& ); // not supported
+
+    union Item {
+        Item*   next;
+        char    itemData[ITEM_SIZE];
+    };
+    struct Block {
+        Item items[ITEMS_PER_BLOCK];
+    };
+    DynArray< Block*, 10 > _blockPtrs;
+    Item* _root;
+
+    int _currentAllocs;
+    int _nAllocs;
+    int _maxAllocs;
+    int _nUntracked;
+};
+
+
+
+/**
+	Implements the interface to the "Visitor pattern" (see the Accept() method.)
+	If you call the Accept() method, it requires being passed a XMLVisitor
+	class to handle callbacks. For nodes that contain other nodes (Document, Element)
+	you will get called with a VisitEnter/VisitExit pair. Nodes that are always leafs
+	are simply called with Visit().
+
+	If you return 'true' from a Visit method, recursive parsing will continue. If you return
+	false, <b>no children of this node or its siblings</b> will be visited.
+
+	All flavors of Visit methods have a default implementation that returns 'true' (continue
+	visiting). You need to only override methods that are interesting to you.
+
+	Generally Accept() is called on the XMLDocument, although all nodes support visiting.
+
+	You should never change the document from a callback.
+
+	@sa XMLNode::Accept()
+*/
+class TINYXML2_LIB XMLVisitor
+{
+public:
+    virtual ~XMLVisitor() {}
+
+    /// Visit a document.
+    virtual bool VisitEnter( const XMLDocument& /*doc*/ )			{
+        return true;
+    }
+    /// Visit a document.
+    virtual bool VisitExit( const XMLDocument& /*doc*/ )			{
+        return true;
+    }
+
+    /// Visit an element.
+    virtual bool VisitEnter( const XMLElement& /*element*/, const XMLAttribute* /*firstAttribute*/ )	{
+        return true;
+    }
+    /// Visit an element.
+    virtual bool VisitExit( const XMLElement& /*element*/ )			{
+        return true;
+    }
+
+    /// Visit a declaration.
+    virtual bool Visit( const XMLDeclaration& /*declaration*/ )		{
+        return true;
+    }
+    /// Visit a text node.
+    virtual bool Visit( const XMLText& /*text*/ )					{
+        return true;
+    }
+    /// Visit a comment node.
+    virtual bool Visit( const XMLComment& /*comment*/ )				{
+        return true;
+    }
+    /// Visit an unknown node.
+    virtual bool Visit( const XMLUnknown& /*unknown*/ )				{
+        return true;
+    }
+};
+
+// WARNING: must match XMLDocument::_errorNames[]
+enum XMLError {
+    XML_SUCCESS = 0,
+    XML_NO_ATTRIBUTE,
+    XML_WRONG_ATTRIBUTE_TYPE,
+    XML_ERROR_FILE_NOT_FOUND,
+    XML_ERROR_FILE_COULD_NOT_BE_OPENED,
+    XML_ERROR_FILE_READ_ERROR,
+    XML_ERROR_ELEMENT_MISMATCH,
+    XML_ERROR_PARSING_ELEMENT,
+    XML_ERROR_PARSING_ATTRIBUTE,
+    XML_ERROR_IDENTIFYING_TAG,
+    XML_ERROR_PARSING_TEXT,
+    XML_ERROR_PARSING_CDATA,
+    XML_ERROR_PARSING_COMMENT,
+    XML_ERROR_PARSING_DECLARATION,
+    XML_ERROR_PARSING_UNKNOWN,
+    XML_ERROR_EMPTY_DOCUMENT,
+    XML_ERROR_MISMATCHED_ELEMENT,
+    XML_ERROR_PARSING,
+    XML_CAN_NOT_CONVERT_TEXT,
+    XML_NO_TEXT_NODE,
+
+	XML_ERROR_COUNT
+};
+
+
+/*
+	Utility functionality.
+*/
+class TINYXML2_LIB XMLUtil
+{
+public:
+    static const char* SkipWhiteSpace( const char* p, int* curLineNumPtr )	{
+        TIXMLASSERT( p );
+
+        while( IsWhiteSpace(*p) ) {
+            if (curLineNumPtr && *p == '\n') {
+                ++(*curLineNumPtr);
+            }
+            ++p;
+        }
+        TIXMLASSERT( p );
+        return p;
+    }
+    static char* SkipWhiteSpace( char* p, int* curLineNumPtr )				{
+        return const_cast<char*>( SkipWhiteSpace( const_cast<const char*>(p), curLineNumPtr ) );
+    }
+
+    // Anything in the high order range of UTF-8 is assumed to not be whitespace. This isn't
+    // correct, but simple, and usually works.
+    static bool IsWhiteSpace( char p )					{
+        return !IsUTF8Continuation(p) && isspace( static_cast<unsigned char>(p) );
+    }
+    
+    inline static bool IsNameStartChar( unsigned char ch ) {
+        if ( ch >= 128 ) {
+            // This is a heuristic guess in attempt to not implement Unicode-aware isalpha()
+            return true;
+        }
+        if ( isalpha( ch ) ) {
+            return true;
+        }
+        return ch == ':' || ch == '_';
+    }
+    
+    inline static bool IsNameChar( unsigned char ch ) {
+        return IsNameStartChar( ch )
+               || isdigit( ch )
+               || ch == '.'
+               || ch == '-';
+    }
+
+    inline static bool StringEqual( const char* p, const char* q, int nChar=INT_MAX )  {
+        if ( p == q ) {
+            return true;
+        }
+        TIXMLASSERT( p );
+        TIXMLASSERT( q );
+        TIXMLASSERT( nChar >= 0 );
+        return strncmp( p, q, nChar ) == 0;
+    }
+    
+    inline static bool IsUTF8Continuation( char p ) {
+        return ( p & 0x80 ) != 0;
+    }
+
+    static const char* ReadBOM( const char* p, bool* hasBOM );
+    // p is the starting location,
+    // the UTF-8 value of the entity will be placed in value, and length filled in.
+    static const char* GetCharacterRef( const char* p, char* value, int* length );
+    static void ConvertUTF32ToUTF8( unsigned long input, char* output, int* length );
+
+    // converts primitive types to strings
+    static void ToStr( int v, char* buffer, int bufferSize );
+    static void ToStr( unsigned v, char* buffer, int bufferSize );
+    static void ToStr( bool v, char* buffer, int bufferSize );
+    static void ToStr( float v, char* buffer, int bufferSize );
+    static void ToStr( double v, char* buffer, int bufferSize );
+	static void ToStr(int64_t v, char* buffer, int bufferSize);
+
+    // converts strings to primitive types
+    static bool	ToInt( const char* str, int* value );
+    static bool ToUnsigned( const char* str, unsigned* value );
+    static bool	ToBool( const char* str, bool* value );
+    static bool	ToFloat( const char* str, float* value );
+    static bool ToDouble( const char* str, double* value );
+	static bool ToInt64(const char* str, int64_t* value);
+
+	// Changes what is serialized for a boolean value.
+	// Default to "true" and "false". Shouldn't be changed
+	// unless you have a special testing or compatibility need.
+	// Be careful: static, global, & not thread safe.
+	// Be sure to set static const memory as parameters.
+	static void SetBoolSerialization(const char* writeTrue, const char* writeFalse);
+
+private:
+	static const char* writeBoolTrue;
+	static const char* writeBoolFalse;
+};
+
+
+/** XMLNode is a base class for every object that is in the
+	XML Document Object Model (DOM), except XMLAttributes.
+	Nodes have siblings, a parent, and children which can
+	be navigated. A node is always in a XMLDocument.
+	The type of a XMLNode can be queried, and it can
+	be cast to its more defined type.
+
+	A XMLDocument allocates memory for all its Nodes.
+	When the XMLDocument gets deleted, all its Nodes
+	will also be deleted.
+
+	@verbatim
+	A Document can contain:	Element	(container or leaf)
+							Comment (leaf)
+							Unknown (leaf)
+							Declaration( leaf )
+
+	An Element can contain:	Element (container or leaf)
+							Text	(leaf)
+							Attributes (not on tree)
+							Comment (leaf)
+							Unknown (leaf)
+
+	@endverbatim
+*/
+class TINYXML2_LIB XMLNode
+{
+    friend class XMLDocument;
+    friend class XMLElement;
+public:
+
+    /// Get the XMLDocument that owns this XMLNode.
+    const XMLDocument* GetDocument() const	{
+        TIXMLASSERT( _document );
+        return _document;
+    }
+    /// Get the XMLDocument that owns this XMLNode.
+    XMLDocument* GetDocument()				{
+        TIXMLASSERT( _document );
+        return _document;
+    }
+
+    /// Safely cast to an Element, or null.
+    virtual XMLElement*		ToElement()		{
+        return 0;
+    }
+    /// Safely cast to Text, or null.
+    virtual XMLText*		ToText()		{
+        return 0;
+    }
+    /// Safely cast to a Comment, or null.
+    virtual XMLComment*		ToComment()		{
+        return 0;
+    }
+    /// Safely cast to a Document, or null.
+    virtual XMLDocument*	ToDocument()	{
+        return 0;
+    }
+    /// Safely cast to a Declaration, or null.
+    virtual XMLDeclaration*	ToDeclaration()	{
+        return 0;
+    }
+    /// Safely cast to an Unknown, or null.
+    virtual XMLUnknown*		ToUnknown()		{
+        return 0;
+    }
+
+    virtual const XMLElement*		ToElement() const		{
+        return 0;
+    }
+    virtual const XMLText*			ToText() const			{
+        return 0;
+    }
+    virtual const XMLComment*		ToComment() const		{
+        return 0;
+    }
+    virtual const XMLDocument*		ToDocument() const		{
+        return 0;
+    }
+    virtual const XMLDeclaration*	ToDeclaration() const	{
+        return 0;
+    }
+    virtual const XMLUnknown*		ToUnknown() const		{
+        return 0;
+    }
+
+    /** The meaning of 'value' changes for the specific type.
+    	@verbatim
+    	Document:	empty (NULL is returned, not an empty string)
+    	Element:	name of the element
+    	Comment:	the comment text
+    	Unknown:	the tag contents
+    	Text:		the text string
+    	@endverbatim
+    */
+    const char* Value() const;
+
+    /** Set the Value of an XML node.
+    	@sa Value()
+    */
+    void SetValue( const char* val, bool staticMem=false );
+
+    /// Gets the line number the node is in, if the document was parsed from a file.
+    int GetLineNum() const { return _parseLineNum; }
+
+    /// Get the parent of this node on the DOM.
+    const XMLNode*	Parent() const			{
+        return _parent;
+    }
+
+    XMLNode* Parent()						{
+        return _parent;
+    }
+
+    /// Returns true if this node has no children.
+    bool NoChildren() const					{
+        return !_firstChild;
+    }
+
+    /// Get the first child node, or null if none exists.
+    const XMLNode*  FirstChild() const		{
+        return _firstChild;
+    }
+
+    XMLNode*		FirstChild()			{
+        return _firstChild;
+    }
+
+    /** Get the first child element, or optionally the first child
+        element with the specified name.
+    */
+    const XMLElement* FirstChildElement( const char* name = 0 ) const;
+
+    XMLElement* FirstChildElement( const char* name = 0 )	{
+        return const_cast<XMLElement*>(const_cast<const XMLNode*>(this)->FirstChildElement( name ));
+    }
+
+    /// Get the last child node, or null if none exists.
+    const XMLNode*	LastChild() const						{
+        return _lastChild;
+    }
+
+    XMLNode*		LastChild()								{
+        return _lastChild;
+    }
+
+    /** Get the last child element or optionally the last child
+        element with the specified name.
+    */
+    const XMLElement* LastChildElement( const char* name = 0 ) const;
+
+    XMLElement* LastChildElement( const char* name = 0 )	{
+        return const_cast<XMLElement*>(const_cast<const XMLNode*>(this)->LastChildElement(name) );
+    }
+
+    /// Get the previous (left) sibling node of this node.
+    const XMLNode*	PreviousSibling() const					{
+        return _prev;
+    }
+
+    XMLNode*	PreviousSibling()							{
+        return _prev;
+    }
+
+    /// Get the previous (left) sibling element of this node, with an optionally supplied name.
+    const XMLElement*	PreviousSiblingElement( const char* name = 0 ) const ;
+
+    XMLElement*	PreviousSiblingElement( const char* name = 0 ) {
+        return const_cast<XMLElement*>(const_cast<const XMLNode*>(this)->PreviousSiblingElement( name ) );
+    }
+
+    /// Get the next (right) sibling node of this node.
+    const XMLNode*	NextSibling() const						{
+        return _next;
+    }
+
+    XMLNode*	NextSibling()								{
+        return _next;
+    }
+
+    /// Get the next (right) sibling element of this node, with an optionally supplied name.
+    const XMLElement*	NextSiblingElement( const char* name = 0 ) const;
+
+    XMLElement*	NextSiblingElement( const char* name = 0 )	{
+        return const_cast<XMLElement*>(const_cast<const XMLNode*>(this)->NextSiblingElement( name ) );
+    }
+
+    /**
+    	Add a child node as the last (right) child.
+		If the child node is already part of the document,
+		it is moved from its old location to the new location.
+		Returns the addThis argument or 0 if the node does not
+		belong to the same document.
+    */
+    XMLNode* InsertEndChild( XMLNode* addThis );
+
+    XMLNode* LinkEndChild( XMLNode* addThis )	{
+        return InsertEndChild( addThis );
+    }
+    /**
+    	Add a child node as the first (left) child.
+		If the child node is already part of the document,
+		it is moved from its old location to the new location.
+		Returns the addThis argument or 0 if the node does not
+		belong to the same document.
+    */
+    XMLNode* InsertFirstChild( XMLNode* addThis );
+    /**
+    	Add a node after the specified child node.
+		If the child node is already part of the document,
+		it is moved from its old location to the new location.
+		Returns the addThis argument or 0 if the afterThis node
+		is not a child of this node, or if the node does not
+		belong to the same document.
+    */
+    XMLNode* InsertAfterChild( XMLNode* afterThis, XMLNode* addThis );
+
+    /**
+    	Delete all the children of this node.
+    */
+    void DeleteChildren();
+
+    /**
+    	Delete a child of this node.
+    */
+    void DeleteChild( XMLNode* node );
+
+    /**
+    	Make a copy of this node, but not its children.
+    	You may pass in a Document pointer that will be
+    	the owner of the new Node. If the 'document' is
+    	null, then the node returned will be allocated
+    	from the current Document. (this->GetDocument())
+
+    	Note: if called on a XMLDocument, this will return null.
+    */
+    virtual XMLNode* ShallowClone( XMLDocument* document ) const = 0;
+
+    /**
+    	Test if 2 nodes are the same, but don't test children.
+    	The 2 nodes do not need to be in the same Document.
+
+    	Note: if called on a XMLDocument, this will return false.
+    */
+    virtual bool ShallowEqual( const XMLNode* compare ) const = 0;
+
+    /** Accept a hierarchical visit of the nodes in the TinyXML-2 DOM. Every node in the
+    	XML tree will be conditionally visited and the host will be called back
+    	via the XMLVisitor interface.
+
+    	This is essentially a SAX interface for TinyXML-2. (Note however it doesn't re-parse
+    	the XML for the callbacks, so the performance of TinyXML-2 is unchanged by using this
+    	interface versus any other.)
+
+    	The interface has been based on ideas from:
+
+    	- http://www.saxproject.org/
+    	- http://c2.com/cgi/wiki?HierarchicalVisitorPattern
+
+    	Which are both good references for "visiting".
+
+    	An example of using Accept():
+    	@verbatim
+    	XMLPrinter printer;
+    	tinyxmlDoc.Accept( &printer );
+    	const char* xmlcstr = printer.CStr();
+    	@endverbatim
+    */
+    virtual bool Accept( XMLVisitor* visitor ) const = 0;
+
+	/** 
+		Set user data into the XMLNode. TinyXML-2 in 
+		no way processes or interprets user data.
+		It is initially 0.
+	*/
+	void SetUserData(void* userData)	{ _userData = userData; }
+
+	/**
+		Get user data set into the XMLNode. TinyXML-2 in
+		no way processes or interprets user data.
+		It is initially 0.
+	*/
+	void* GetUserData() const			{ return _userData; }
+
+protected:
+    XMLNode( XMLDocument* );
+    virtual ~XMLNode();
+
+    virtual char* ParseDeep( char*, StrPair*, int* );
+
+    XMLDocument*	_document;
+    XMLNode*		_parent;
+    mutable StrPair	_value;
+    int             _parseLineNum;
+
+    XMLNode*		_firstChild;
+    XMLNode*		_lastChild;
+
+    XMLNode*		_prev;
+    XMLNode*		_next;
+
+	void*			_userData;
+
+private:
+    MemPool*		_memPool;
+    void Unlink( XMLNode* child );
+    static void DeleteNode( XMLNode* node );
+    void InsertChildPreamble( XMLNode* insertThis ) const;
+    const XMLElement* ToElementWithName( const char* name ) const;
+
+    XMLNode( const XMLNode& );	// not supported
+    XMLNode& operator=( const XMLNode& );	// not supported
+};
+
+
+/** XML text.
+
+	Note that a text node can have child element nodes, for example:
+	@verbatim
+	<root>This is <b>bold</b></root>
+	@endverbatim
+
+	A text node can have 2 ways to output the next. "normal" output
+	and CDATA. It will default to the mode it was parsed from the XML file and
+	you generally want to leave it alone, but you can change the output mode with
+	SetCData() and query it with CData().
+*/
+class TINYXML2_LIB XMLText : public XMLNode
+{
+    friend class XMLDocument;
+public:
+    virtual bool Accept( XMLVisitor* visitor ) const;
+
+    virtual XMLText* ToText()			{
+        return this;
+    }
+    virtual const XMLText* ToText() const	{
+        return this;
+    }
+
+    /// Declare whether this should be CDATA or standard text.
+    void SetCData( bool isCData )			{
+        _isCData = isCData;
+    }
+    /// Returns true if this is a CDATA text element.
+    bool CData() const						{
+        return _isCData;
+    }
+
+    virtual XMLNode* ShallowClone( XMLDocument* document ) const;
+    virtual bool ShallowEqual( const XMLNode* compare ) const;
+
+protected:
+    XMLText( XMLDocument* doc )	: XMLNode( doc ), _isCData( false )	{}
+    virtual ~XMLText()												{}
+
+    char* ParseDeep( char*, StrPair* endTag, int* curLineNumPtr );
+
+private:
+    bool _isCData;
+
+    XMLText( const XMLText& );	// not supported
+    XMLText& operator=( const XMLText& );	// not supported
+};
+
+
+/** An XML Comment. */
+class TINYXML2_LIB XMLComment : public XMLNode
+{
+    friend class XMLDocument;
+public:
+    virtual XMLComment*	ToComment()					{
+        return this;
+    }
+    virtual const XMLComment* ToComment() const		{
+        return this;
+    }
+
+    virtual bool Accept( XMLVisitor* visitor ) const;
+
+    virtual XMLNode* ShallowClone( XMLDocument* document ) const;
+    virtual bool ShallowEqual( const XMLNode* compare ) const;
+
+protected:
+    XMLComment( XMLDocument* doc );
+    virtual ~XMLComment();
+
+    char* ParseDeep( char*, StrPair* endTag, int* curLineNumPtr);
+
+private:
+    XMLComment( const XMLComment& );	// not supported
+    XMLComment& operator=( const XMLComment& );	// not supported
+};
+
+
+/** In correct XML the declaration is the first entry in the file.
+	@verbatim
+		<?xml version="1.0" standalone="yes"?>
+	@endverbatim
+
+	TinyXML-2 will happily read or write files without a declaration,
+	however.
+
+	The text of the declaration isn't interpreted. It is parsed
+	and written as a string.
+*/
+class TINYXML2_LIB XMLDeclaration : public XMLNode
+{
+    friend class XMLDocument;
+public:
+    virtual XMLDeclaration*	ToDeclaration()					{
+        return this;
+    }
+    virtual const XMLDeclaration* ToDeclaration() const		{
+        return this;
+    }
+
+    virtual bool Accept( XMLVisitor* visitor ) const;
+
+    virtual XMLNode* ShallowClone( XMLDocument* document ) const;
+    virtual bool ShallowEqual( const XMLNode* compare ) const;
+
+protected:
+    XMLDeclaration( XMLDocument* doc );
+    virtual ~XMLDeclaration();
+
+    char* ParseDeep( char*, StrPair* endTag, int* curLineNumPtr );
+
+private:
+    XMLDeclaration( const XMLDeclaration& );	// not supported
+    XMLDeclaration& operator=( const XMLDeclaration& );	// not supported
+};
+
+
+/** Any tag that TinyXML-2 doesn't recognize is saved as an
+	unknown. It is a tag of text, but should not be modified.
+	It will be written back to the XML, unchanged, when the file
+	is saved.
+
+	DTD tags get thrown into XMLUnknowns.
+*/
+class TINYXML2_LIB XMLUnknown : public XMLNode
+{
+    friend class XMLDocument;
+public:
+    virtual XMLUnknown*	ToUnknown()					{
+        return this;
+    }
+    virtual const XMLUnknown* ToUnknown() const		{
+        return this;
+    }
+
+    virtual bool Accept( XMLVisitor* visitor ) const;
+
+    virtual XMLNode* ShallowClone( XMLDocument* document ) const;
+    virtual bool ShallowEqual( const XMLNode* compare ) const;
+
+protected:
+    XMLUnknown( XMLDocument* doc );
+    virtual ~XMLUnknown();
+
+    char* ParseDeep( char*, StrPair* endTag, int* curLineNumPtr );
+
+private:
+    XMLUnknown( const XMLUnknown& );	// not supported
+    XMLUnknown& operator=( const XMLUnknown& );	// not supported
+};
+
+
+
+/** An attribute is a name-value pair. Elements have an arbitrary
+	number of attributes, each with a unique name.
+
+	@note The attributes are not XMLNodes. You may only query the
+	Next() attribute in a list.
+*/
+class TINYXML2_LIB XMLAttribute
+{
+    friend class XMLElement;
+public:
+    /// The name of the attribute.
+    const char* Name() const;
+
+    /// The value of the attribute.
+    const char* Value() const;
+
+    /// Gets the line number the attribute is in, if the document was parsed from a file.
+    int GetLineNum() const { return _parseLineNum; }
+
+    /// The next attribute in the list.
+    const XMLAttribute* Next() const {
+        return _next;
+    }
+
+    /** IntValue interprets the attribute as an integer, and returns the value.
+        If the value isn't an integer, 0 will be returned. There is no error checking;
+    	use QueryIntValue() if you need error checking.
+    */
+	int	IntValue() const {
+		int i = 0;
+		QueryIntValue(&i);
+		return i;
+	}
+
+	int64_t Int64Value() const {
+		int64_t i = 0;
+		QueryInt64Value(&i);
+		return i;
+	}
+
+    /// Query as an unsigned integer. See IntValue()
+    unsigned UnsignedValue() const			{
+        unsigned i=0;
+        QueryUnsignedValue( &i );
+        return i;
+    }
+    /// Query as a boolean. See IntValue()
+    bool	 BoolValue() const				{
+        bool b=false;
+        QueryBoolValue( &b );
+        return b;
+    }
+    /// Query as a double. See IntValue()
+    double 	 DoubleValue() const			{
+        double d=0;
+        QueryDoubleValue( &d );
+        return d;
+    }
+    /// Query as a float. See IntValue()
+    float	 FloatValue() const				{
+        float f=0;
+        QueryFloatValue( &f );
+        return f;
+    }
+
+    /** QueryIntValue interprets the attribute as an integer, and returns the value
+    	in the provided parameter. The function will return XML_SUCCESS on success,
+    	and XML_WRONG_ATTRIBUTE_TYPE if the conversion is not successful.
+    */
+    XMLError QueryIntValue( int* value ) const;
+    /// See QueryIntValue
+    XMLError QueryUnsignedValue( unsigned int* value ) const;
+	/// See QueryIntValue
+	XMLError QueryInt64Value(int64_t* value) const;
+	/// See QueryIntValue
+    XMLError QueryBoolValue( bool* value ) const;
+    /// See QueryIntValue
+    XMLError QueryDoubleValue( double* value ) const;
+    /// See QueryIntValue
+    XMLError QueryFloatValue( float* value ) const;
+
+    /// Set the attribute to a string value.
+    void SetAttribute( const char* value );
+    /// Set the attribute to value.
+    void SetAttribute( int value );
+    /// Set the attribute to value.
+    void SetAttribute( unsigned value );
+	/// Set the attribute to value.
+	void SetAttribute(int64_t value);
+	/// Set the attribute to value.
+    void SetAttribute( bool value );
+    /// Set the attribute to value.
+    void SetAttribute( double value );
+    /// Set the attribute to value.
+    void SetAttribute( float value );
+
+private:
+    enum { BUF_SIZE = 200 };
+
+    XMLAttribute() : _parseLineNum( 0 ), _next( 0 ), _memPool( 0 ) {}
+    virtual ~XMLAttribute()	{}
+
+    XMLAttribute( const XMLAttribute& );	// not supported
+    void operator=( const XMLAttribute& );	// not supported
+    void SetName( const char* name );
+
+    char* ParseDeep( char* p, bool processEntities, int* curLineNumPtr );
+
+    mutable StrPair _name;
+    mutable StrPair _value;
+    int             _parseLineNum;
+    XMLAttribute*   _next;
+    MemPool*        _memPool;
+};
+
+
+/** The element is a container class. It has a value, the element name,
+	and can contain other elements, text, comments, and unknowns.
+	Elements also contain an arbitrary number of attributes.
+*/
+class TINYXML2_LIB XMLElement : public XMLNode
+{
+    friend class XMLDocument;
+public:
+    /// Get the name of an element (which is the Value() of the node.)
+    const char* Name() const		{
+        return Value();
+    }
+    /// Set the name of the element.
+    void SetName( const char* str, bool staticMem=false )	{
+        SetValue( str, staticMem );
+    }
+
+    virtual XMLElement* ToElement()				{
+        return this;
+    }
+    virtual const XMLElement* ToElement() const {
+        return this;
+    }
+    virtual bool Accept( XMLVisitor* visitor ) const;
+
+    /** Given an attribute name, Attribute() returns the value
+    	for the attribute of that name, or null if none
+    	exists. For example:
+
+    	@verbatim
+    	const char* value = ele->Attribute( "foo" );
+    	@endverbatim
+
+    	The 'value' parameter is normally null. However, if specified,
+    	the attribute will only be returned if the 'name' and 'value'
+    	match. This allow you to write code:
+
+    	@verbatim
+    	if ( ele->Attribute( "foo", "bar" ) ) callFooIsBar();
+    	@endverbatim
+
+    	rather than:
+    	@verbatim
+    	if ( ele->Attribute( "foo" ) ) {
+    		if ( strcmp( ele->Attribute( "foo" ), "bar" ) == 0 ) callFooIsBar();
+    	}
+    	@endverbatim
+    */
+    const char* Attribute( const char* name, const char* value=0 ) const;
+
+    /** Given an attribute name, IntAttribute() returns the value
+    	of the attribute interpreted as an integer. The default
+        value will be returned if the attribute isn't present,
+        or if there is an error. (For a method with error
+    	checking, see QueryIntAttribute()).
+    */
+	int IntAttribute(const char* name, int defaultValue = 0) const;
+    /// See IntAttribute()
+	unsigned UnsignedAttribute(const char* name, unsigned defaultValue = 0) const;
+	/// See IntAttribute()
+	int64_t Int64Attribute(const char* name, int64_t defaultValue = 0) const;
+	/// See IntAttribute()
+	bool BoolAttribute(const char* name, bool defaultValue = false) const;
+    /// See IntAttribute()
+	double DoubleAttribute(const char* name, double defaultValue = 0) const;
+    /// See IntAttribute()
+	float FloatAttribute(const char* name, float defaultValue = 0) const;
+
+    /** Given an attribute name, QueryIntAttribute() returns
+    	XML_SUCCESS, XML_WRONG_ATTRIBUTE_TYPE if the conversion
+    	can't be performed, or XML_NO_ATTRIBUTE if the attribute
+    	doesn't exist. If successful, the result of the conversion
+    	will be written to 'value'. If not successful, nothing will
+    	be written to 'value'. This allows you to provide default
+    	value:
+
+    	@verbatim
+    	int value = 10;
+    	QueryIntAttribute( "foo", &value );		// if "foo" isn't found, value will still be 10
+    	@endverbatim
+    */
+    XMLError QueryIntAttribute( const char* name, int* value ) const				{
+        const XMLAttribute* a = FindAttribute( name );
+        if ( !a ) {
+            return XML_NO_ATTRIBUTE;
+        }
+        return a->QueryIntValue( value );
+    }
+
+	/// See QueryIntAttribute()
+    XMLError QueryUnsignedAttribute( const char* name, unsigned int* value ) const	{
+        const XMLAttribute* a = FindAttribute( name );
+        if ( !a ) {
+            return XML_NO_ATTRIBUTE;
+        }
+        return a->QueryUnsignedValue( value );
+    }
+
+	/// See QueryIntAttribute()
+	XMLError QueryInt64Attribute(const char* name, int64_t* value) const {
+		const XMLAttribute* a = FindAttribute(name);
+		if (!a) {
+			return XML_NO_ATTRIBUTE;
+		}
+		return a->QueryInt64Value(value);
+	}
+
+	/// See QueryIntAttribute()
+    XMLError QueryBoolAttribute( const char* name, bool* value ) const				{
+        const XMLAttribute* a = FindAttribute( name );
+        if ( !a ) {
+            return XML_NO_ATTRIBUTE;
+        }
+        return a->QueryBoolValue( value );
+    }
+    /// See QueryIntAttribute()
+    XMLError QueryDoubleAttribute( const char* name, double* value ) const			{
+        const XMLAttribute* a = FindAttribute( name );
+        if ( !a ) {
+            return XML_NO_ATTRIBUTE;
+        }
+        return a->QueryDoubleValue( value );
+    }
+    /// See QueryIntAttribute()
+    XMLError QueryFloatAttribute( const char* name, float* value ) const			{
+        const XMLAttribute* a = FindAttribute( name );
+        if ( !a ) {
+            return XML_NO_ATTRIBUTE;
+        }
+        return a->QueryFloatValue( value );
+    }
+
+	
+    /** Given an attribute name, QueryAttribute() returns
+    	XML_SUCCESS, XML_WRONG_ATTRIBUTE_TYPE if the conversion
+    	can't be performed, or XML_NO_ATTRIBUTE if the attribute
+    	doesn't exist. It is overloaded for the primitive types,
+		and is a generally more convenient replacement of
+		QueryIntAttribute() and related functions.
+		
+		If successful, the result of the conversion
+    	will be written to 'value'. If not successful, nothing will
+    	be written to 'value'. This allows you to provide default
+    	value:
+
+    	@verbatim
+    	int value = 10;
+    	QueryAttribute( "foo", &value );		// if "foo" isn't found, value will still be 10
+    	@endverbatim
+    */
+	int QueryAttribute( const char* name, int* value ) const {
+		return QueryIntAttribute( name, value );
+	}
+
+	int QueryAttribute( const char* name, unsigned int* value ) const {
+		return QueryUnsignedAttribute( name, value );
+	}
+
+	int QueryAttribute(const char* name, int64_t* value) const {
+		return QueryInt64Attribute(name, value);
+	}
+
+	int QueryAttribute( const char* name, bool* value ) const {
+		return QueryBoolAttribute( name, value );
+	}
+
+	int QueryAttribute( const char* name, double* value ) const {
+		return QueryDoubleAttribute( name, value );
+	}
+
+	int QueryAttribute( const char* name, float* value ) const {
+		return QueryFloatAttribute( name, value );
+	}
+
+	/// Sets the named attribute to value.
+    void SetAttribute( const char* name, const char* value )	{
+        XMLAttribute* a = FindOrCreateAttribute( name );
+        a->SetAttribute( value );
+    }
+    /// Sets the named attribute to value.
+    void SetAttribute( const char* name, int value )			{
+        XMLAttribute* a = FindOrCreateAttribute( name );
+        a->SetAttribute( value );
+    }
+    /// Sets the named attribute to value.
+    void SetAttribute( const char* name, unsigned value )		{
+        XMLAttribute* a = FindOrCreateAttribute( name );
+        a->SetAttribute( value );
+    }
+
+	/// Sets the named attribute to value.
+	void SetAttribute(const char* name, int64_t value) {
+		XMLAttribute* a = FindOrCreateAttribute(name);
+		a->SetAttribute(value);
+	}
+
+	/// Sets the named attribute to value.
+    void SetAttribute( const char* name, bool value )			{
+        XMLAttribute* a = FindOrCreateAttribute( name );
+        a->SetAttribute( value );
+    }
+    /// Sets the named attribute to value.
+    void SetAttribute( const char* name, double value )		{
+        XMLAttribute* a = FindOrCreateAttribute( name );
+        a->SetAttribute( value );
+    }
+    /// Sets the named attribute to value.
+    void SetAttribute( const char* name, float value )		{
+        XMLAttribute* a = FindOrCreateAttribute( name );
+        a->SetAttribute( value );
+    }
+
+    /**
+    	Delete an attribute.
+    */
+    void DeleteAttribute( const char* name );
+
+    /// Return the first attribute in the list.
+    const XMLAttribute* FirstAttribute() const {
+        return _rootAttribute;
+    }
+    /// Query a specific attribute in the list.
+    const XMLAttribute* FindAttribute( const char* name ) const;
+
+    /** Convenience function for easy access to the text inside an element. Although easy
+    	and concise, GetText() is limited compared to getting the XMLText child
+    	and accessing it directly.
+
+    	If the first child of 'this' is a XMLText, the GetText()
+    	returns the character string of the Text node, else null is returned.
+
+    	This is a convenient method for getting the text of simple contained text:
+    	@verbatim
+    	<foo>This is text</foo>
+    		const char* str = fooElement->GetText();
+    	@endverbatim
+
+    	'str' will be a pointer to "This is text".
+
+    	Note that this function can be misleading. If the element foo was created from
+    	this XML:
+    	@verbatim
+    		<foo><b>This is text</b></foo>
+    	@endverbatim
+
+    	then the value of str would be null. The first child node isn't a text node, it is
+    	another element. From this XML:
+    	@verbatim
+    		<foo>This is <b>text</b></foo>
+    	@endverbatim
+    	GetText() will return "This is ".
+    */
+    const char* GetText() const;
+
+    /** Convenience function for easy access to the text inside an element. Although easy
+    	and concise, SetText() is limited compared to creating an XMLText child
+    	and mutating it directly.
+
+    	If the first child of 'this' is a XMLText, SetText() sets its value to
+		the given string, otherwise it will create a first child that is an XMLText.
+
+    	This is a convenient method for setting the text of simple contained text:
+    	@verbatim
+    	<foo>This is text</foo>
+    		fooElement->SetText( "Hullaballoo!" );
+     	<foo>Hullaballoo!</foo>
+		@endverbatim
+
+    	Note that this function can be misleading. If the element foo was created from
+    	this XML:
+    	@verbatim
+    		<foo><b>This is text</b></foo>
+    	@endverbatim
+
+    	then it will not change "This is text", but rather prefix it with a text element:
+    	@verbatim
+    		<foo>Hullaballoo!<b>This is text</b></foo>
+    	@endverbatim
+		
+		For this XML:
+    	@verbatim
+    		<foo />
+    	@endverbatim
+    	SetText() will generate
+    	@verbatim
+    		<foo>Hullaballoo!</foo>
+    	@endverbatim
+    */
+	void SetText( const char* inText );
+    /// Convenience method for setting text inside an element. See SetText() for important limitations.
+    void SetText( int value );
+    /// Convenience method for setting text inside an element. See SetText() for important limitations.
+    void SetText( unsigned value );  
+	/// Convenience method for setting text inside an element. See SetText() for important limitations.
+	void SetText(int64_t value);
+	/// Convenience method for setting text inside an element. See SetText() for important limitations.
+    void SetText( bool value );  
+    /// Convenience method for setting text inside an element. See SetText() for important limitations.
+    void SetText( double value );  
+    /// Convenience method for setting text inside an element. See SetText() for important limitations.
+    void SetText( float value );  
+
+    /**
+    	Convenience method to query the value of a child text node. This is probably best
+    	shown by example. Given you have a document is this form:
+    	@verbatim
+    		<point>
+    			<x>1</x>
+    			<y>1.4</y>
+    		</point>
+    	@endverbatim
+
+    	The QueryIntText() and similar functions provide a safe and easier way to get to the
+    	"value" of x and y.
+
+    	@verbatim
+    		int x = 0;
+    		float y = 0;	// types of x and y are contrived for example
+    		const XMLElement* xElement = pointElement->FirstChildElement( "x" );
+    		const XMLElement* yElement = pointElement->FirstChildElement( "y" );
+    		xElement->QueryIntText( &x );
+    		yElement->QueryFloatText( &y );
+    	@endverbatim
+
+    	@returns XML_SUCCESS (0) on success, XML_CAN_NOT_CONVERT_TEXT if the text cannot be converted
+    			 to the requested type, and XML_NO_TEXT_NODE if there is no child text to query.
+
+    */
+    XMLError QueryIntText( int* ival ) const;
+    /// See QueryIntText()
+    XMLError QueryUnsignedText( unsigned* uval ) const;
+	/// See QueryIntText()
+	XMLError QueryInt64Text(int64_t* uval) const;
+	/// See QueryIntText()
+    XMLError QueryBoolText( bool* bval ) const;
+    /// See QueryIntText()
+    XMLError QueryDoubleText( double* dval ) const;
+    /// See QueryIntText()
+    XMLError QueryFloatText( float* fval ) const;
+
+	int IntText(int defaultValue = 0) const;
+
+	/// See QueryIntText()
+	unsigned UnsignedText(unsigned defaultValue = 0) const;
+	/// See QueryIntText()
+	int64_t Int64Text(int64_t defaultValue = 0) const;
+	/// See QueryIntText()
+	bool BoolText(bool defaultValue = false) const;
+	/// See QueryIntText()
+	double DoubleText(double defaultValue = 0) const;
+	/// See QueryIntText()
+	float FloatText(float defaultValue = 0) const;
+
+    // internal:
+    enum {
+        OPEN,		// <foo>
+        CLOSED,		// <foo/>
+        CLOSING		// </foo>
+    };
+    int ClosingType() const {
+        return _closingType;
+    }
+    virtual XMLNode* ShallowClone( XMLDocument* document ) const;
+    virtual bool ShallowEqual( const XMLNode* compare ) const;
+
+protected:
+    char* ParseDeep( char* p, StrPair* endTag, int* curLineNumPtr );
+
+private:
+    XMLElement( XMLDocument* doc );
+    virtual ~XMLElement();
+    XMLElement( const XMLElement& );	// not supported
+    void operator=( const XMLElement& );	// not supported
+
+    XMLAttribute* FindAttribute( const char* name ) {
+        return const_cast<XMLAttribute*>(const_cast<const XMLElement*>(this)->FindAttribute( name ));
+    }
+    XMLAttribute* FindOrCreateAttribute( const char* name );
+    //void LinkAttribute( XMLAttribute* attrib );
+    char* ParseAttributes( char* p, int* curLineNumPtr );
+    static void DeleteAttribute( XMLAttribute* attribute );
+    XMLAttribute* CreateAttribute();
+
+    enum { BUF_SIZE = 200 };
+    int _closingType;
+    // The attribute list is ordered; there is no 'lastAttribute'
+    // because the list needs to be scanned for dupes before adding
+    // a new attribute.
+    XMLAttribute* _rootAttribute;
+};
+
+
+enum Whitespace {
+    PRESERVE_WHITESPACE,
+    COLLAPSE_WHITESPACE
+};
+
+
+/** A Document binds together all the functionality.
+	It can be saved, loaded, and printed to the screen.
+	All Nodes are connected and allocated to a Document.
+	If the Document is deleted, all its Nodes are also deleted.
+*/
+class TINYXML2_LIB XMLDocument : public XMLNode
+{
+    friend class XMLElement;
+public:
+    /// constructor
+    XMLDocument( bool processEntities = true, Whitespace = PRESERVE_WHITESPACE );
+    ~XMLDocument();
+
+    virtual XMLDocument* ToDocument()				{
+        TIXMLASSERT( this == _document );
+        return this;
+    }
+    virtual const XMLDocument* ToDocument() const	{
+        TIXMLASSERT( this == _document );
+        return this;
+    }
+
+    /**
+    	Parse an XML file from a character string.
+    	Returns XML_SUCCESS (0) on success, or
+    	an errorID.
+
+    	You may optionally pass in the 'nBytes', which is
+    	the number of bytes which will be parsed. If not
+    	specified, TinyXML-2 will assume 'xml' points to a
+    	null terminated string.
+    */
+    XMLError Parse( const char* xml, size_t nBytes=(size_t)(-1) );
+
+    /**
+    	Load an XML file from disk.
+    	Returns XML_SUCCESS (0) on success, or
+    	an errorID.
+    */
+    XMLError LoadFile( const char* filename );
+
+    /**
+    	Load an XML file from disk. You are responsible
+    	for providing and closing the FILE*. 
+     
+        NOTE: The file should be opened as binary ("rb")
+        not text in order for TinyXML-2 to correctly
+        do newline normalization.
+
+    	Returns XML_SUCCESS (0) on success, or
+    	an errorID.
+    */
+    XMLError LoadFile( FILE* );
+
+    /**
+    	Save the XML file to disk.
+    	Returns XML_SUCCESS (0) on success, or
+    	an errorID.
+    */
+    XMLError SaveFile( const char* filename, bool compact = false );
+
+    /**
+    	Save the XML file to disk. You are responsible
+    	for providing and closing the FILE*.
+
+    	Returns XML_SUCCESS (0) on success, or
+    	an errorID.
+    */
+    XMLError SaveFile( FILE* fp, bool compact = false );
+
+    bool ProcessEntities() const		{
+        return _processEntities;
+    }
+    Whitespace WhitespaceMode() const	{
+        return _whitespace;
+    }
+
+    /**
+    	Returns true if this document has a leading Byte Order Mark of UTF8.
+    */
+    bool HasBOM() const {
+        return _writeBOM;
+    }
+    /** Sets whether to write the BOM when writing the file.
+    */
+    void SetBOM( bool useBOM ) {
+        _writeBOM = useBOM;
+    }
+
+    /** Return the root element of DOM. Equivalent to FirstChildElement().
+        To get the first node, use FirstChild().
+    */
+    XMLElement* RootElement()				{
+        return FirstChildElement();
+    }
+    const XMLElement* RootElement() const	{
+        return FirstChildElement();
+    }
+
+    /** Print the Document. If the Printer is not provided, it will
+        print to stdout. If you provide Printer, this can print to a file:
+    	@verbatim
+    	XMLPrinter printer( fp );
+    	doc.Print( &printer );
+    	@endverbatim
+
+    	Or you can use a printer to print to memory:
+    	@verbatim
+    	XMLPrinter printer;
+    	doc.Print( &printer );
+    	// printer.CStr() has a const char* to the XML
+    	@endverbatim
+    */
+    void Print( XMLPrinter* streamer=0 ) const;
+    virtual bool Accept( XMLVisitor* visitor ) const;
+
+    /**
+    	Create a new Element associated with
+    	this Document. The memory for the Element
+    	is managed by the Document.
+    */
+    XMLElement* NewElement( const char* name );
+    /**
+    	Create a new Comment associated with
+    	this Document. The memory for the Comment
+    	is managed by the Document.
+    */
+    XMLComment* NewComment( const char* comment );
+    /**
+    	Create a new Text associated with
+    	this Document. The memory for the Text
+    	is managed by the Document.
+    */
+    XMLText* NewText( const char* text );
+    /**
+    	Create a new Declaration associated with
+    	this Document. The memory for the object
+    	is managed by the Document.
+
+    	If the 'text' param is null, the standard
+    	declaration is used.:
+    	@verbatim
+    		<?xml version="1.0" encoding="UTF-8"?>
+    	@endverbatim
+    */
+    XMLDeclaration* NewDeclaration( const char* text=0 );
+    /**
+    	Create a new Unknown associated with
+    	this Document. The memory for the object
+    	is managed by the Document.
+    */
+    XMLUnknown* NewUnknown( const char* text );
+
+    /**
+    	Delete a node associated with this document.
+    	It will be unlinked from the DOM.
+    */
+    void DeleteNode( XMLNode* node );
+
+    void SetError( XMLError error, const char* str1, const char* str2, int lineNum );
+
+    void ClearError() {
+        SetError(XML_SUCCESS, 0, 0, 0);
+    }
+
+    /// Return true if there was an error parsing the document.
+    bool Error() const {
+        return _errorID != XML_SUCCESS;
+    }
+    /// Return the errorID.
+    XMLError  ErrorID() const {
+        return _errorID;
+    }
+	const char* ErrorName() const;
+    static const char* ErrorIDToName(XMLError errorID);
+
+    /// Return a possibly helpful diagnostic location or string.
+    const char* GetErrorStr1() const {
+        return _errorStr1.GetStr();
+    }
+    /// Return a possibly helpful secondary diagnostic location or string.
+    const char* GetErrorStr2() const {
+        return _errorStr2.GetStr();
+    }
+    /// Return the line where the error occured, or zero if unknown.
+    int GetErrorLineNum() const
+    {
+        return _errorLineNum;
+    }
+    /// If there is an error, print it to stdout.
+    void PrintError() const;
+    
+    /// Clear the document, resetting it to the initial state.
+    void Clear();
+
+    // internal
+    char* Identify( char* p, XMLNode** node );
+
+    virtual XMLNode* ShallowClone( XMLDocument* /*document*/ ) const	{
+        return 0;
+    }
+    virtual bool ShallowEqual( const XMLNode* /*compare*/ ) const	{
+        return false;
+    }
+
+private:
+    XMLDocument( const XMLDocument& );	// not supported
+    void operator=( const XMLDocument& );	// not supported
+
+    bool			_writeBOM;
+    bool			_processEntities;
+    XMLError		_errorID;
+    Whitespace		_whitespace;
+    mutable StrPair	_errorStr1;
+    mutable StrPair	_errorStr2;
+    int             _errorLineNum;
+    char*			_charBuffer;
+    int				_parseCurLineNum;
+
+    MemPoolT< sizeof(XMLElement) >	 _elementPool;
+    MemPoolT< sizeof(XMLAttribute) > _attributePool;
+    MemPoolT< sizeof(XMLText) >		 _textPool;
+    MemPoolT< sizeof(XMLComment) >	 _commentPool;
+
+	static const char* _errorNames[XML_ERROR_COUNT];
+
+    void Parse();
+
+    template<class NodeType, int PoolElementSize>
+    NodeType* CreateUnlinkedNode( MemPoolT<PoolElementSize>& pool );
+};
+
+template<class NodeType, int PoolElementSize>
+inline NodeType* XMLDocument::CreateUnlinkedNode( MemPoolT<PoolElementSize>& pool )
+{
+    TIXMLASSERT( sizeof( NodeType ) == PoolElementSize );
+    TIXMLASSERT( sizeof( NodeType ) == pool.ItemSize() );
+    NodeType* returnNode = new (pool.Alloc()) NodeType( this );
+    TIXMLASSERT( returnNode );
+    returnNode->_memPool = &pool;
+    return returnNode;
+}
+
+/**
+	A XMLHandle is a class that wraps a node pointer with null checks; this is
+	an incredibly useful thing. Note that XMLHandle is not part of the TinyXML-2
+	DOM structure. It is a separate utility class.
+
+	Take an example:
+	@verbatim
+	<Document>
+		<Element attributeA = "valueA">
+			<Child attributeB = "value1" />
+			<Child attributeB = "value2" />
+		</Element>
+	</Document>
+	@endverbatim
+
+	Assuming you want the value of "attributeB" in the 2nd "Child" element, it's very
+	easy to write a *lot* of code that looks like:
+
+	@verbatim
+	XMLElement* root = document.FirstChildElement( "Document" );
+	if ( root )
+	{
+		XMLElement* element = root->FirstChildElement( "Element" );
+		if ( element )
+		{
+			XMLElement* child = element->FirstChildElement( "Child" );
+			if ( child )
+			{
+				XMLElement* child2 = child->NextSiblingElement( "Child" );
+				if ( child2 )
+				{
+					// Finally do something useful.
+	@endverbatim
+
+	And that doesn't even cover "else" cases. XMLHandle addresses the verbosity
+	of such code. A XMLHandle checks for null pointers so it is perfectly safe
+	and correct to use:
+
+	@verbatim
+	XMLHandle docHandle( &document );
+	XMLElement* child2 = docHandle.FirstChildElement( "Document" ).FirstChildElement( "Element" ).FirstChildElement().NextSiblingElement();
+	if ( child2 )
+	{
+		// do something useful
+	@endverbatim
+
+	Which is MUCH more concise and useful.
+
+	It is also safe to copy handles - internally they are nothing more than node pointers.
+	@verbatim
+	XMLHandle handleCopy = handle;
+	@endverbatim
+
+	See also XMLConstHandle, which is the same as XMLHandle, but operates on const objects.
+*/
+class TINYXML2_LIB XMLHandle
+{
+public:
+    /// Create a handle from any node (at any depth of the tree.) This can be a null pointer.
+    XMLHandle( XMLNode* node )												{
+        _node = node;
+    }
+    /// Create a handle from a node.
+    XMLHandle( XMLNode& node )												{
+        _node = &node;
+    }
+    /// Copy constructor
+    XMLHandle( const XMLHandle& ref )										{
+        _node = ref._node;
+    }
+    /// Assignment
+    XMLHandle& operator=( const XMLHandle& ref )							{
+        _node = ref._node;
+        return *this;
+    }
+
+    /// Get the first child of this handle.
+    XMLHandle FirstChild() 													{
+        return XMLHandle( _node ? _node->FirstChild() : 0 );
+    }
+    /// Get the first child element of this handle.
+    XMLHandle FirstChildElement( const char* name = 0 )						{
+        return XMLHandle( _node ? _node->FirstChildElement( name ) : 0 );
+    }
+    /// Get the last child of this handle.
+    XMLHandle LastChild()													{
+        return XMLHandle( _node ? _node->LastChild() : 0 );
+    }
+    /// Get the last child element of this handle.
+    XMLHandle LastChildElement( const char* name = 0 )						{
+        return XMLHandle( _node ? _node->LastChildElement( name ) : 0 );
+    }
+    /// Get the previous sibling of this handle.
+    XMLHandle PreviousSibling()												{
+        return XMLHandle( _node ? _node->PreviousSibling() : 0 );
+    }
+    /// Get the previous sibling element of this handle.
+    XMLHandle PreviousSiblingElement( const char* name = 0 )				{
+        return XMLHandle( _node ? _node->PreviousSiblingElement( name ) : 0 );
+    }
+    /// Get the next sibling of this handle.
+    XMLHandle NextSibling()													{
+        return XMLHandle( _node ? _node->NextSibling() : 0 );
+    }
+    /// Get the next sibling element of this handle.
+    XMLHandle NextSiblingElement( const char* name = 0 )					{
+        return XMLHandle( _node ? _node->NextSiblingElement( name ) : 0 );
+    }
+
+    /// Safe cast to XMLNode. This can return null.
+    XMLNode* ToNode()							{
+        return _node;
+    }
+    /// Safe cast to XMLElement. This can return null.
+    XMLElement* ToElement() 					{
+        return ( _node ? _node->ToElement() : 0 );
+    }
+    /// Safe cast to XMLText. This can return null.
+    XMLText* ToText() 							{
+        return ( _node ? _node->ToText() : 0 );
+    }
+    /// Safe cast to XMLUnknown. This can return null.
+    XMLUnknown* ToUnknown() 					{
+        return ( _node ? _node->ToUnknown() : 0 );
+    }
+    /// Safe cast to XMLDeclaration. This can return null.
+    XMLDeclaration* ToDeclaration() 			{
+        return ( _node ? _node->ToDeclaration() : 0 );
+    }
+
+private:
+    XMLNode* _node;
+};
+
+
+/**
+	A variant of the XMLHandle class for working with const XMLNodes and Documents. It is the
+	same in all regards, except for the 'const' qualifiers. See XMLHandle for API.
+*/
+class TINYXML2_LIB XMLConstHandle
+{
+public:
+    XMLConstHandle( const XMLNode* node )											{
+        _node = node;
+    }
+    XMLConstHandle( const XMLNode& node )											{
+        _node = &node;
+    }
+    XMLConstHandle( const XMLConstHandle& ref )										{
+        _node = ref._node;
+    }
+
+    XMLConstHandle& operator=( const XMLConstHandle& ref )							{
+        _node = ref._node;
+        return *this;
+    }
+
+    const XMLConstHandle FirstChild() const											{
+        return XMLConstHandle( _node ? _node->FirstChild() : 0 );
+    }
+    const XMLConstHandle FirstChildElement( const char* name = 0 ) const				{
+        return XMLConstHandle( _node ? _node->FirstChildElement( name ) : 0 );
+    }
+    const XMLConstHandle LastChild()	const										{
+        return XMLConstHandle( _node ? _node->LastChild() : 0 );
+    }
+    const XMLConstHandle LastChildElement( const char* name = 0 ) const				{
+        return XMLConstHandle( _node ? _node->LastChildElement( name ) : 0 );
+    }
+    const XMLConstHandle PreviousSibling() const									{
+        return XMLConstHandle( _node ? _node->PreviousSibling() : 0 );
+    }
+    const XMLConstHandle PreviousSiblingElement( const char* name = 0 ) const		{
+        return XMLConstHandle( _node ? _node->PreviousSiblingElement( name ) : 0 );
+    }
+    const XMLConstHandle NextSibling() const										{
+        return XMLConstHandle( _node ? _node->NextSibling() : 0 );
+    }
+    const XMLConstHandle NextSiblingElement( const char* name = 0 ) const			{
+        return XMLConstHandle( _node ? _node->NextSiblingElement( name ) : 0 );
+    }
+
+
+    const XMLNode* ToNode() const				{
+        return _node;
+    }
+    const XMLElement* ToElement() const			{
+        return ( _node ? _node->ToElement() : 0 );
+    }
+    const XMLText* ToText() const				{
+        return ( _node ? _node->ToText() : 0 );
+    }
+    const XMLUnknown* ToUnknown() const			{
+        return ( _node ? _node->ToUnknown() : 0 );
+    }
+    const XMLDeclaration* ToDeclaration() const	{
+        return ( _node ? _node->ToDeclaration() : 0 );
+    }
+
+private:
+    const XMLNode* _node;
+};
+
+
+/**
+	Printing functionality. The XMLPrinter gives you more
+	options than the XMLDocument::Print() method.
+
+	It can:
+	-# Print to memory.
+	-# Print to a file you provide.
+	-# Print XML without a XMLDocument.
+
+	Print to Memory
+
+	@verbatim
+	XMLPrinter printer;
+	doc.Print( &printer );
+	SomeFunction( printer.CStr() );
+	@endverbatim
+
+	Print to a File
+
+	You provide the file pointer.
+	@verbatim
+	XMLPrinter printer( fp );
+	doc.Print( &printer );
+	@endverbatim
+
+	Print without a XMLDocument
+
+	When loading, an XML parser is very useful. However, sometimes
+	when saving, it just gets in the way. The code is often set up
+	for streaming, and constructing the DOM is just overhead.
+
+	The Printer supports the streaming case. The following code
+	prints out a trivially simple XML file without ever creating
+	an XML document.
+
+	@verbatim
+	XMLPrinter printer( fp );
+	printer.OpenElement( "foo" );
+	printer.PushAttribute( "foo", "bar" );
+	printer.CloseElement();
+	@endverbatim
+*/
+class TINYXML2_LIB XMLPrinter : public XMLVisitor
+{
+public:
+    /** Construct the printer. If the FILE* is specified,
+    	this will print to the FILE. Else it will print
+    	to memory, and the result is available in CStr().
+    	If 'compact' is set to true, then output is created
+    	with only required whitespace and newlines.
+    */
+    XMLPrinter( FILE* file=0, bool compact = false, int depth = 0 );
+    virtual ~XMLPrinter()	{}
+
+    /** If streaming, write the BOM and declaration. */
+    void PushHeader( bool writeBOM, bool writeDeclaration );
+    /** If streaming, start writing an element.
+        The element must be closed with CloseElement()
+    */
+    void OpenElement( const char* name, bool compactMode=false );
+    /// If streaming, add an attribute to an open element.
+    void PushAttribute( const char* name, const char* value );
+    void PushAttribute( const char* name, int value );
+    void PushAttribute( const char* name, unsigned value );
+	void PushAttribute(const char* name, int64_t value);
+	void PushAttribute( const char* name, bool value );
+    void PushAttribute( const char* name, double value );
+    /// If streaming, close the Element.
+    virtual void CloseElement( bool compactMode=false );
+
+    /// Add a text node.
+    void PushText( const char* text, bool cdata=false );
+    /// Add a text node from an integer.
+    void PushText( int value );
+    /// Add a text node from an unsigned.
+    void PushText( unsigned value );
+	/// Add a text node from an unsigned.
+	void PushText(int64_t value);
+	/// Add a text node from a bool.
+    void PushText( bool value );
+    /// Add a text node from a float.
+    void PushText( float value );
+    /// Add a text node from a double.
+    void PushText( double value );
+
+    /// Add a comment
+    void PushComment( const char* comment );
+
+    void PushDeclaration( const char* value );
+    void PushUnknown( const char* value );
+
+    virtual bool VisitEnter( const XMLDocument& /*doc*/ );
+    virtual bool VisitExit( const XMLDocument& /*doc*/ )			{
+        return true;
+    }
+
+    virtual bool VisitEnter( const XMLElement& element, const XMLAttribute* attribute );
+    virtual bool VisitExit( const XMLElement& element );
+
+    virtual bool Visit( const XMLText& text );
+    virtual bool Visit( const XMLComment& comment );
+    virtual bool Visit( const XMLDeclaration& declaration );
+    virtual bool Visit( const XMLUnknown& unknown );
+
+    /**
+    	If in print to memory mode, return a pointer to
+    	the XML file in memory.
+    */
+    const char* CStr() const {
+        return _buffer.Mem();
+    }
+    /**
+    	If in print to memory mode, return the size
+    	of the XML file in memory. (Note the size returned
+    	includes the terminating null.)
+    */
+    int CStrSize() const {
+        return _buffer.Size();
+    }
+    /**
+    	If in print to memory mode, reset the buffer to the
+    	beginning.
+    */
+    void ClearBuffer() {
+        _buffer.Clear();
+        _buffer.Push(0);
+    }
+
+protected:
+	virtual bool CompactMode( const XMLElement& )	{ return _compactMode; }
+
+	/** Prints out the space before an element. You may override to change
+	    the space and tabs used. A PrintSpace() override should call Print().
+	*/
+    virtual void PrintSpace( int depth );
+    void Print( const char* format, ... );
+
+    void SealElementIfJustOpened();
+    bool _elementJustOpened;
+    DynArray< const char*, 10 > _stack;
+
+private:
+    void PrintString( const char*, bool restrictedEntitySet );	// prints out, after detecting entities.
+
+    bool _firstElement;
+    FILE* _fp;
+    int _depth;
+    int _textDepth;
+    bool _processEntities;
+	bool _compactMode;
+
+    enum {
+        ENTITY_RANGE = 64,
+        BUF_SIZE = 200
+    };
+    bool _entityFlag[ENTITY_RANGE];
+    bool _restrictedEntityFlag[ENTITY_RANGE];
+
+    DynArray< char, 20 > _buffer;
+};
+
+
+}	// tinyxml2
+
+#if defined(_MSC_VER)
+#   pragma warning(pop)
+#endif
+
+#endif // TINYXML2_INCLUDED