Fix PdfName limit and tag structure version for pdf/a-4

DEVSIX-7803

Autoported commit.
Original commit hash: [3f3c7f357]

Author: Dmitry Radchuk

itext.tests/itext.pdfa.tests/itext/pdfa/PdfA4CatalogCheckTest.cs

@@ -23,11 +23,14 @@ You should have received a copy of the GNU Affero General Public License
 using System;
 using System.IO;
 using iText.Commons.Utils;
+using iText.Kernel.Font;
 using iText.Kernel.Geom;
 using iText.Kernel.Pdf;
 using iText.Kernel.Pdf.Canvas;
 using iText.Kernel.Pdf.Xobject;
 using iText.Kernel.Utils;
+using iText.Layout;
+using iText.Layout.Element;
 using iText.Pdfa.Exceptions;
 using iText.Test;
 using iText.Test.Pdfa;
@@ -60,6 +63,30 @@ public virtual void CreateSimpleDocTest() {
             NUnit.Framework.Assert.IsNull(new VeraPdfValidator().Validate(outPdf));
         }
 
+        // Android-Conversion-Skip-Line (TODO DEVSIX-7377 introduce pdf\a validation on Android)
+        [NUnit.Framework.Test]
+        public virtual void CreateSimpleTaggedDocTest() {
+            String outPdf = destinationFolder + "pdfA4_tagged.pdf";
+            String cmpPdf = sourceFolder + "cmp/PdfA4CatalogCheckTest/cmp_pdfA4_tagged.pdf";
+            PdfWriter writer = new PdfWriter(outPdf, new WriterProperties().SetPdfVersion(PdfVersion.PDF_2_0));
+            Stream @is = new FileStream(sourceFolder + "sRGB Color Space Profile.icm", FileMode.Open, FileAccess.Read);
+            PdfADocument pdfDoc = (PdfADocument)new PdfADocument(writer, PdfAConformanceLevel.PDF_A_4, new PdfOutputIntent
+                ("Custom", "", "http://www.color.org", "sRGB IEC61966-2.1", @is)).SetTagged();
+            PdfFont font = PdfFontFactory.CreateFont(sourceFolder + "FreeSans.ttf", "WinAnsi", PdfFontFactory.EmbeddingStrategy
+                .FORCE_EMBEDDED);
+            Document document = new Document(pdfDoc);
+            document.SetFont(font);
+            List list = new List();
+            list.Add("123");
+            document.Add(list);
+            NUnit.Framework.Assert.AreEqual(PdfVersion.PDF_2_0, pdfDoc.GetTagStructureContext().GetTagStructureTargetVersion
+                ());
+            document.Close();
+            NUnit.Framework.Assert.IsNull(new CompareTool().CompareByContent(outPdf, cmpPdf, destinationFolder, "diff"
+                ));
+            NUnit.Framework.Assert.IsNull(new VeraPdfValidator().Validate(outPdf));
+        }
+
         // Android-Conversion-Skip-Line (TODO DEVSIX-7377 introduce pdf\a validation on Android)
         [NUnit.Framework.Test]
         public virtual void InvalidCatalogVersionCheckTest() {

itext.tests/itext.pdfa.tests/itext/pdfa/checker/PdfA4ImplementationLimitsTest.cs

@@ -75,6 +75,12 @@ public virtual void DeviceNColorspaceWithMoreThan32Components() {
             pdfA4Checker.CheckColorSpace(BuildDeviceNColorspace(40), null, currentColorSpaces, true, false);
         }
 
+        [NUnit.Framework.Test]
+        public virtual void LongPdfNameTest() {
+            //exception shall not be thrown as pdf/a-4 supports greater than 127 characters pdf names
+            pdfA4Checker.CheckPdfObject(PdfACheckerTestUtils.GetLongName(200));
+        }
+
         private PdfColorSpace BuildDeviceNColorspace(int numberOfComponents) {
             IList<String> tmpArray = new List<String>(numberOfComponents);
             float[] transformArray = new float[numberOfComponents * 2];

itext.tests/itext.pdfa.tests/resources/itext/pdfa/cmp/PdfA4CatalogCheckTest/cmp_pdfA4_tagged.pdf

@@ -449,6 +449,11 @@ private static PdfVersion GetPdfVersionForPdfA(PdfAConformanceLevel conformanceL
                     break;
                 }
 
+                case "4": {
+                    version = PdfVersion.PDF_2_0;
+                    break;
+                }
+
                 default: {
                     version = PdfVersion.PDF_1_4;
                     break;

itext/itext.pdfa/itext/pdfa/PdfADocument.cs

@@ -422,6 +422,11 @@ protected internal override void CheckBlendMode(PdfName blendMode) {
             }
         }
 
+        /// <summary><inheritDoc/></summary>
+        protected internal override int GetMaxNameLength() {
+            return int.MaxValue;
+        }
+
         private static bool IsValidXmpConformance(String value) {
             if (value == null) {
                 return false;

itext/itext.pdfa/itext/pdfa/checker/PdfA4Checker.cs

@@ -1 +1 @@
-48292687dfcfa44a98eaf24005011750c7019a14
+3f3c7f35792059b0fddca8e224091ed039d28a8c