lsm/PdfPig
1
0
Fork 0
mirror of https://github.com/UglyToad/PdfPig.git synced 2025-11-28 09:28:25 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Tolerate any white-space bytes after the stream operator.

Browse Source
This commit is contained in:
InusualZ
2021-06-13 14:43:06 -04:00
committed by Wesley Moret
parent b3a361e2f2
commit 31ca3640d2
1 changed files with 4 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/UglyToad.PdfPig/Tokenization/Scanner/PdfTokenScanner.cs
View File

@@ -256,35 +256,20 @@
// Verify again that we start with "stream"
var hasStartStreamToken = ReadStreamTokenStart(inputBytes, startStreamTokenOffset);
if (!hasStartStreamToken)
{
return false;
}
// From the specification: The stream operator should be followed by \r\n or \n, not just \r.
if (!inputBytes.MoveNext())
// While the specification demands a \n we have seen files with `garbage` before the actual data
do
{
return false;
}
// While the specification demands a \n we have seen files with \r only in the wild.
var hadWhiteSpace = false;
if (inputBytes.CurrentByte == '\r')
{
hadWhiteSpace = true;
inputBytes.MoveNext();
}
if (inputBytes.CurrentByte != '\n')
{
if (!hadWhiteSpace)
if (!inputBytes.MoveNext())
{
return false;
}
inputBytes.Seek(inputBytes.CurrentOffset - 1);
}
} while ((char)inputBytes.CurrentByte != '\n');
// Store where we started reading the first byte of data.
long startDataOffset = inputBytes.CurrentOffset;