public static PDFDictionary ParseDictionary(string value, int offset, out int end)
{
AssertValidValue(value, offset + 1);
if (value[offset] != DictionaryStartChar)
{
throw new PDFNativeParserException(CommonErrors.DictionaryDoesNotStartWithRequiredChar);
}
if (value[offset + 1] != DictionaryStartChar)
{
throw new PDFNativeParserException(CommonErrors.DictionaryDoesNotStartWithRequiredChar);
}
PDFDictionary dict = new PDFDictionary();
offset += 2;
while (offset < value.Length)
{
char c = value[offset];
if (char.IsWhiteSpace(c))
{
offset++;
}
else if (c == NameStartCharacter)
{
PDFName name = ParseName(value, offset, out end);
offset = end;
IFileObject obj = InferAndParseNextObject(value, offset, out end);
dict[name] = obj;
offset = end;
}
else if (c == DictionaryEndChar)
{
if (value.Length > offset + 1 && value[offset + 1] == DictionaryEndChar)
{
offset += 2;
break;
}
else
{
throw new PDFNativeParserException(CommonErrors.DictionaryDoesNotEndWithRequiredChar);
}
}
else
{
throw new PDFNativeParserException(CommonErrors.AllDictionaryKeysMustBePDFNames);
}
}
end = offset;
return(dict);
}
protected static PDFObjectRef AssertGetObjectRef(PDFDictionary dict, PDFName entry, string errorMessage)
{
IFileObject found;
if (!dict.TryGetValue(entry, out found))
{
throw new PDFNativeParserException(errorMessage);
}
if (found.Type != PDFObjectTypes.ObjectRef)
{
throw new PDFNativeParserException(errorMessage);
}
return((PDFObjectRef)found);
}
