Support everything, tests

Author: tmcw

Makefile

@@ -0,0 +1,2 @@
+tokml.js:
+	browserify -s tokml index.js > tokml.js

README.md

@@ -4,12 +4,38 @@
 
 Convert [GeoJSON](http://geojson.org/) to [KML](https://developers.google.com/kml/documentation/).
 
-## usage
+## Usage
 
     npm install --save tokml
 
-## api
+as a binary:
+
+    npm install -g tokml
+    tokml file.geojson > file.kml
+    tokml < file.geojson > file.kml
+
+## Example
 
 ```js
 var kml = tokml(geojsonObject);
 ```
+
+## API
+
+### `tokml(geojsonObject)`
+
+Given [GeoJSON](http://geojson.org/) data as an object, return KML data as a
+string of XML.
+
+## Development
+
+Requires [node.js](http://nodejs.org/) and [browserify](https://github.com/substack/node-browserify):
+
+To build `tokml.js`:
+
+    make
+
+To run tests:
+
+    npm install
+    npm test

index.js

@@ -1,32 +1,62 @@
-module.exports = tokml;
-
-var header = '<?xml version="1.0" encoding="UTF-8"?>' +
-    '<kml xmlns="http://www.opengis.net/kml/2.2">',
-    footer = '</kml>';
-
+module.exports = function tokml(geojson) {
+    return '<?xml version="1.0" encoding="UTF-8"?>' +
+        tag('kml',
+            tag('Document',
+                geojson.features.map(feature).join('')
+               ), [['xmlns', 'http://www.opengis.net/kml/2.2']]);
+};
 
 // ## Geometry Types
 //
 // https://developers.google.com/kml/documentation/kmlreference#geometry
-function point(_) {
-    return tag('Point', tag('coordinates', _.coordinates.join(',')));
-}
-
-function linestring(_) {
-    return tag('LineString', tag('coordinates', linearring(_.coordinates)));
-}
+var geometry = {
+    Point: function(_) {
+        return tag('Point', tag('coordinates', _.coordinates.join(',')));
+    },
+    LineString: function(_) {
+        return tag('LineString', tag('coordinates', linearring(_.coordinates)));
+    },
+    Polygon: function(_) {
+        var outer = _.coordinates[0],
+            inner = _.coordinates.slice(1),
+            outerRing = tag('outerBoundaryIs',
+                tag('LinearRing', tag('coordinates', linearring(outer)))),
+            innerRings = inner.map(function(i) {
+                return tag('innerBoundaryIs',
+                    tag('LinearRing', tag('coordinates', linearring(i))));
+            }).join('');
+        return tag('Polygon', outerRing + innerRings);
+    },
+    MultiPoint: function(_) {
+        return tag('MultiGeometry', _.coordinates.map(function(c) {
+            return geometry.Point({ coordinates: c });
+        }).join(''));
+    },
+    MultiPolygon: function(_) {
+        return tag('MultiGeometry', _.coordinates.map(function(c) {
+            return geometry.Polygon({ coordinates: c });
+        }).join(''));
+    },
+    MultiLineString: function(_) {
+        return tag('MultiGeometry', _.coordinates.map(function(c) {
+            return geometry.LineString({ coordinates: c });
+        }).join(''));
+    },
+    GeometryCollection: function(_) {
+        return tag('MultiGeometry',
+            _.geometries.map(geometry.any).join(''));
+    },
+    any: function(_) {
+        if (geometry[_.type]) {
+            return geometry[_.type](_);
+        } else { }
+    }
+};
 
 function linearring(_) {
     return _.map(function(cds) { return cds.join(','); }).join(' ');
 }
 
-function polygon(_) {
-    return tag('Polygon',
-        tag('outerBoundaryIs',
-            tag('LinearRing',
-                tag('coordinates', linearring(_.coordinates[0])))));
-}
-
 // ## Data
 function extendeddata(_) {
     return tag('ExtendedData', pairs(_).map(data).join(''));
@@ -36,25 +66,12 @@ function data(_) {
     return tag('Data', _[1], [['name', _[0]]]);
 }
 
-var geometry = {
-    Point: point,
-    LineString: linestring,
-    Polygon: polygon
-};
-
 function feature(_) {
     return tag('Placemark',
-        geometry[_.geometry.type](_.geometry) +
+        geometry.any(_.geometry) +
         extendeddata(_.properties));
 }
 
-// # tokml
-function tokml(geojson) {
-    return header +
-        geojson.features.map(feature).join('') +
-        footer;
-}
-
 // ## Helpers
 function pairs(_) {
     var o = [];

package.json

@@ -19,9 +19,12 @@
   "license": "BSD-2-Clause",
   "devDependencies": {
     "expect.js": "~0.2.0",
-    "mocha": "~1.13.0"
+    "mocha": "~1.13.0",
+    "glob": "~3.2.6"
   },
   "dependencies": {
-    "minimist": "0.0.5"
+    "minimist": "0.0.5",
+    "concat-stream": "~1.0.1",
+    "sharkdown": "0.0.1"
   }
 }

scripts/regenerate.js

@@ -0,0 +1,7 @@
+var tokml = require('../'),
+    fs = require('fs'),
+    glob = require('glob');
+
+glob.sync('test/data/*.geojson').forEach(function(g) {
+    fs.writeFileSync(g.replace('.geojson', '.kml'), tokml(JSON.parse(fs.readFileSync(g))));
+});

test/data/featurecollection.kml

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?><kml xmlns="http://www.opengis.net/kml/2.2"><Document><Placemark><Point><coordinates>102,0.5</coordinates></Point><ExtendedData><Data name="prop0">value0</Data></ExtendedData></Placemark><Placemark><LineString><coordinates>102,0 103,1 104,0 105,1</coordinates></LineString><ExtendedData><Data name="prop0">value0</Data><Data name="prop1">0</Data></ExtendedData></Placemark><Placemark><Polygon><outerBoundaryIs><LinearRing><coordinates>100,0 101,0 101,1 100,1 100,0</coordinates></LinearRing></outerBoundaryIs></Polygon><ExtendedData><Data name="prop0">value0</Data><Data name="prop1">val2</Data></ExtendedData></Placemark></Document></kml>

test/data/geometrycollection.geojson

@@ -0,0 +1,20 @@
+{ "type": "FeatureCollection",
+  "features": [{
+    "type": "Feature",
+    "geometry": { "type": "GeometryCollection",
+      "geometries": [
+        { "type": "Point",
+          "coordinates": [100.0, 0.0]
+          },
+        { "type": "LineString",
+          "coordinates": [ [101.0, 0.0], [102.0, 1.0] ]
+          }
+      ]
+    },
+    "properties": {
+      "prop0": "value0",
+      "prop1": "val2"
+      }
+    }
+  ]
+}

test/data/geometrycollection.kml

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?><kml xmlns="http://www.opengis.net/kml/2.2"><Document><Placemark><MultiGeometry><Point><coordinates>100,0</coordinates></Point><LineString><coordinates>101,0 102,1</coordinates></LineString></MultiGeometry><ExtendedData><Data name="prop0">value0</Data><Data name="prop1">val2</Data></ExtendedData></Placemark></Document></kml>

test/data/linestring.kml

@@ -1 +1 @@
-<?xml version="1.0" encoding="UTF-8"?><kml xmlns="http://www.opengis.net/kml/2.2"><Placemark><LineString><coordinates>100,0 101,1</coordinates></LineString><ExtendedData><Data name="prop0">value0</Data><Data name="prop1">val2</Data></ExtendedData></Placemark></kml>
+<?xml version="1.0" encoding="UTF-8"?><kml xmlns="http://www.opengis.net/kml/2.2"><Document><Placemark><LineString><coordinates>100,0 101,1</coordinates></LineString><ExtendedData><Data name="prop0">value0</Data><Data name="prop1">val2</Data></ExtendedData></Placemark></Document></kml>

test/data/multilinestring.geojson

@@ -0,0 +1,16 @@
+{ "type": "FeatureCollection",
+  "features": [{
+    "type": "Feature",
+    "geometry":  { "type": "MultiLineString",
+      "coordinates": [
+          [ [100.0, 0.0], [101.0, 1.0] ],
+          [ [102.0, 2.0], [103.0, 3.0] ]
+        ]
+      },
+    "properties": {
+      "prop0": "value0",
+      "prop1": "val2"
+      }
+    }
+  ]
+}