Hi Mark,
Thanks for your patch. I comitted it to SVN.
I think it is time for a new bug fix release now. We collected lot's
of fixes over the last year.
Best regards,
Dominik
On Fri, Feb 22, 2013 at 6:26 PM, Mark Rogers
<mark.rog...@powermapper.com> wrote:
> Hi
>
>
>
> Here’s a patch for a heap corruption issue experienced when reading some
> damaged PDF documents:
>
>
>
> /src/base/PdfXRefStreamParserObject.cpp
>
>
>
> Line 137-142 was
>
> //printf("nCount=%i ", static_cast<int>(nCount));
>
> //printf("pBuffer=%li ", (long)(pBuffer - pStart));
>
> //printf("pEnd=%li ", lBufferLen);
>
> if( ! (*m_pOffsets)[static_cast<int>(nFirstObj)].bParsed )
>
> ReadXRefStreamEntry( pBuffer, lBufferLen, nW, static_cast<int>(nFirstObj) );
>
>
>
> Additional line added to make sure nFirstObj is in range:
>
>
>
> //printf("nCount=%i ", static_cast<int>(nCount));
>
> //printf("pBuffer=%li ", (long)(pBuffer - pStart));
>
> //printf("pEnd=%li ", lBufferLen);
>
> if ( nFirstObj >= 0 && nFirstObj < m_pOffsets->size() )
>
> if( !
> (*m_pOffsets)[static_cast<int>(nFirstObj)].bParsed )
>
> ReadXRefStreamEntry( pBuffer, lBufferLen, nW, static_cast<int>(nFirstObj) );
>
>
>
> Best Regards
>
> Mark
>
>
>
> Mark Rogers - mark.rog...@powermapper.com
> PowerMapper Software Ltd - www.powermapper.com
>
> Registered in Scotland No 362274 Quartermile 2 Edinburgh EH3 9GL
>
>
>
> From: cybevnm [mailto:cybe...@gmail.com]
> Sent: 19 February 2013 18:45
> To: Leonard Rosenthol; podofo-users@lists.sourceforge.net
> Subject: Re: [Podofo-users] CID fonts subsettting
>
>
>
> There is a broblem - I'm not sure how to do font subsetting for
> unicode-aware TTF font using PoDoFo API.
> Seems like there are no way to ask for TTF font with subsetting enabled
> using casual PdfDocument.CreateFont().
> EFontCreationFlags::eFontCreationFlags_Type1Subsetting isn't about TTF;
> PdfDocument.CreateFontSubset just pulls every glyph to subset (i.e. makes
> usual embedding).
> So, how can I force PoDoFo to create TTF font with subsetting enabled ? (or
> I just moving in wrong direction?)
>
>
> 2/19/2013 2:12 AM, Leonard Rosenthol пишет:
>
> If you are planning to support a wide set of potential languages with a
> single font, then yes, subset embedding is the correct solution.
>
>
>
> IIRC, PoDoFo supports subsetting for TrueType fonts only. If that font is a
> TTF, you should be fine.
>
>
>
> Leonard
>
>
>
> From: cybevnm <cybe...@gmail.com>
> Date: Monday, February 18, 2013 5:09 PM
> To: Leonard Rosenthol <lrose...@adobe.com>
> Cc: "podofo-users@lists.sourceforge.net"
> <podofo-users@lists.sourceforge.net>
> Subject: Re: [Podofo-users] CID fonts subsettting
>
>
>
> I want to generate a pdf document, which contains strings in several
> languages. Set of the languages (i.e. set of required characters) can be
> determined only at generation phase, so I've decided to use a font, which
> contains as much as possible characters
> (http://en.wikipedia.org/wiki/GNU_Unifont in my case), to represent any
> possible input language during the rendering of the document by a pdf
> viewer.
> The GNU Unifont isn't common at clients' workstations (which is mostly under
> the MS Windows control), so I should to do some form of font embedding. But
> I have conflicting requirement - documents should be as small as possible,
> so full font embedding isn't an option (+ 3 Mbytes of overhead per document
> is too much for me).
> I think that only possible option in my situation is to embed only those
> glyphs which actually used in document - this is what I mean under 'font
> subsetting' term.
> Is it possible to make this using PoDoFo ? Or maybe there are another ways
> to satisfy the requirements ?
>
>
> On 02/18/2013 11:22 PM, Leonard Rosenthol wrote:
>
> You don't actually subset a CID font - since there is no such thing as a
>
> CID font file.
>
>
>
> A CID font is really a special way to encode/store font data in a PDF file
>
> when having to deal with Unicode-based fonts. You can create a CID font
>
> from a TTF or OTF font as part of subsetting it - though it's not required.
>
>
>
> So backing this upŠ
>
>
>
> What are you trying to achieve with PoDoFo that is blocking you?
>
>
>
> Leonard
>
>
>
>
>
> On 2/18/13 2:42 PM, "cybevnm" <cybe...@gmail.com> wrote:
>
>
>
> Hi!
>
> After some searching through the podofo code I suspect that subsetting
>
> for the CID fonts isn't implemented (PdfFontCID doesn't implement
>
> AddUsedSubsettingGlyphs etc.) and can be done just for the PdfFontType1
>
> fonts (which doesn't support unicode). But there are mystic (for me)
>
> PdfFontTTFSubset and PdfFontCache::GetFontSubset.
>
> So, is CID fonts (unicode-aware) subsetting supported and what are
>
> PdfFontTTFSubset and PdfFontCache::GetFontSubset for ?
>
> Thanks!
>
>
>
>
>
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