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#444 handle invalid tounicode map objects in tt fonts

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This commit is contained in:
Eliot Jones 2022-05-02 16:17:05 -04:00
parent 03692cf42f
commit 4e490d63be
1 changed files with 15 additions and 8 deletions
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7
src/UglyToad.PdfPig/PdfFonts/Parser/Handlers/TrueTypeFontHandler.cs
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@ -106,6 +106,8 @@
CMap toUnicodeCMap = null; CMap toUnicodeCMap = null;
if (dictionary.TryGet(NameToken.ToUnicode, out var toUnicodeObj)) if (dictionary.TryGet(NameToken.ToUnicode, out var toUnicodeObj))
{
try
{ {
var toUnicode = DirectObjectFinder.Get<StreamToken>(toUnicodeObj, pdfScanner); var toUnicode = DirectObjectFinder.Get<StreamToken>(toUnicodeObj, pdfScanner);
@ -116,6 +118,11 @@
toUnicodeCMap = CMapCache.Parse(new ByteArrayInputBytes(decodedUnicodeCMap)); toUnicodeCMap = CMapCache.Parse(new ByteArrayInputBytes(decodedUnicodeCMap));
} }
} }
catch (Exception ex)
{
log.Error("Failed to decode ToUnicode CMap for a TrueType font in file due to an exception.", ex);
}
}
Encoding encoding = encodingReader.Read(dictionary, descriptor); Encoding encoding = encodingReader.Read(dictionary, descriptor);