internal PdfDictionary(PdfStreamReader reader)
{
_children = new PdfValueList();
_children.pdfReadChildren(reader, PdfValueType.DictionaryEnd);
}
private void _readPageResources(PdfDictionary page)
{
PdfValueList resources = page.ValueByName <PdfDictionary>("Resources", mandatory: false)?.Children;
if (resources != null)
{
for (int resourceIdx = 0; resourceIdx < resources.Count; ++resourceIdx)
{
if (resources[resourceIdx] is PdfName)
{
string cls = resources[resourceIdx].Cast <PdfName>().Value;
try {
if (++resourceIdx >= resources.Count)
{
throw new PdfException("Resource dictionary corrupt.");
}
switch (cls)
{
#if DEBUG_TEST
case "ProcSet":
System.Diagnostics.Debug.WriteLine("Resourse " + cls);
break;
case "Properties": {
var resourceItems = resources[resourceIdx].Resolve <PdfDictionary>();
if ((resourceItems.Children.Count % 2) != 0)
{
throw new PdfException("Resource dictionary corrupt.");
}
for (int ItemIdx = 0; ItemIdx < resourceItems.Children.Count - 1; ItemIdx += 2)
{
System.Diagnostics.Debug.WriteLine("Resourse " + cls + " " + resourceItems.Children[ItemIdx].Cast <PdfName>().Value + " removed.");
}
++resourceIdx;
}
break;
#else
case "ProcSet":
case "Properties":
++resourceIdx;
break;
#endif
case "Font":
case "XObject":
case "ExtGState":
case "ColorSpace": {
var resourceItems = resources[resourceIdx].Resolve <PdfDictionary>();
if ((resourceItems.Children.Count % 2) != 0)
{
throw new PdfException("Resource dictionary corrupt.");
}
for (int ItemIdx = 0; ItemIdx < resourceItems.Children.Count - 1; ItemIdx += 2)
{
var value = resourceItems.Children[ItemIdx + 1];
if (cls == "Font")
{
var fontDic = value.Resolve <PdfDictionary>();
if (new PdfName("Type").Equals(fontDic.Children[0]) &&
new PdfName("Font").Equals(fontDic.Children[1]) &&
new PdfName("Subtype").Equals(fontDic.Children[2]) &&
new PdfName("Type1").Equals(fontDic.Children[3]) &&
new PdfName("BaseFont").Equals(fontDic.Children[4]) &&
new PdfName("Encoding").Equals(fontDic.Children[6]) &&
new PdfName("WinAnsiEncoding").Equals(fontDic.Children[7]))
{
var stdFont = PdfStandard.Standard.FindStandardFontByName(fontDic.Children[5].Cast <PdfName>().Value);
if (stdFont != null)
{
value = stdFont;
}
}
}
_resources.Add(cls,
resourceItems.Children[ItemIdx].Cast <PdfName>().Value,
value);
}
}
break;
}
}
catch (Exception err) {
throw new PdfException("Processing resource '" + cls + "' failed.", err);
}
}
}
}
}
private void _readXrefObject(int pos, PdfStreamReader reader, PdfValue firstToken)
{
int id = ((PdfInteger)firstToken).Value;
int revision = reader.ReadInt();
reader.ReadToken(PdfValueType.ObjectBegin);
_allocateXrefTable(id + 1);
var rr = new PdfReferenceReader(this, id, revision, pos);
if (!(_readObj(reader, false) is PdfObjectReader obj))
{
throw new PdfExceptionReader("Invalid Xref obj.");
}
rr.setValue(obj);
_xrefTable[id] = rr;
var dictionary = obj.Dictionary.Children;
PdfValueList w = null;
PdfValueList index = null;
int size = 0;
PdfReferenceReader prev = null;
for (int i = 0; i < dictionary.Count; ++i)
{
var entry = dictionary[i];
if (entry is PdfName)
{
switch (((PdfName)entry).Value)
{
case "W": w = ((PdfArray)dictionary[++i]).Children; break;
case "Index": index = ((PdfArray)dictionary[++i]).Children; break;
case "Size": size = ((PdfInteger)dictionary[++i]).Value; break;
case "Prev": prev = (PdfReferenceReader)dictionary[++i]; break;
case "Root": _rootReference = (PdfReferenceReader)dictionary[++i]; break;
case "Encrypt": _encryptReference = (PdfReferenceReader)dictionary[++i]; break;
case "Info": _infoReference = (PdfReferenceReader)dictionary[++i]; break;
case "ID": _id = ((PdfArray)dictionary[++i]).Children.ToArray(); break;
}
}
}
if (obj.NamedType != "XRef" || w == null || index == null)
{
throw new PdfExceptionReader("Invalid xref object.");
}
int s1 = ((PdfInteger)w[0]).Value;
int s2 = ((PdfInteger)w[1]).Value;
int s3 = ((PdfInteger)w[2]).Value;
id = ((PdfInteger)index[0]).Value;
_allocateXrefTable(((PdfInteger)index[1]).Value);
using (var r = new PdfXrefStreamReader(obj.GetUncompressStream())) {
while (!r.EOF)
{
int t = r.ReadValue(s1);
int v2 = r.ReadValue(s2);
int v3 = r.ReadValue(s3);
switch (t)
{
case 0: break;
case 1: pdfGetReference(id, v3).setPosition(v2); break;
case 2: pdfGetReference(id, 0).setCompressed(v3, pdfGetReference(v2, 0)); break;
default: throw new PdfExceptionReader("cross-reference stream type #" + t + " unknown.");
}
++id;
}
}
}
internal PdfArray(PdfStreamReader reader)
{
_children = new PdfValueList();
_children.pdfReadChildren(reader, PdfValueType.ArrayEnd);
}
