chromium / pdfium Goto Github PK

The PDF library used by the Chromium project

License: Other

Python 1.00% C++ 81.68% C 2.09% Pascal 15.12% Objective-C 0.02% Objective-C++ 0.02% JavaScript 0.02% Shell 0.02% SourcePawn 0.03%

pdfium's Introduction

Chromium

Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web.

The project's web site is https://www.chromium.org.

To check out the source code locally, don't use git clone! Instead, follow the instructions on how to get the code.

Documentation in the source is rooted in docs/README.md.

Learn how to Get Around the Chromium Source Code Directory Structure.

For historical reasons, there are some small top level directories. Now the guidance is that new top level directories are for product (e.g. Chrome, Android WebView, Ash). Even if these products have multiple executables, the code should be in subdirectories of the product.

If you found a bug, please file it at https://crbug.com/new.

pdfium's People

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pdfium's Issues

pdfium out of bound bug

Bug

Thread 1 "pdfium_test" received signal SIGTRAP, Trace/breakpoint trap.
0x000055555c2ff819 in CFDE_TextOut::Line::GetPieceAtIndex(unsigned long)::$_1::operator()() const () at ../../xfa/fde/cfde_textout.cpp:551
551       CHECK(pdfium::IndexInBounds(pieces_, index));
(gdb) bt
#0  0x000055555c2ff819 in CFDE_TextOut::Line::GetPieceAtIndex(unsigned long)::$_1::operator()() const () at ../../xfa/fde/cfde_textout.cpp:551
#1  0x000055555c2fca4b in CFDE_TextOut::Line::GetPieceAtIndex(unsigned long) () at ../../xfa/fde/cfde_textout.cpp:551
#2  0x000055555c2ff378 in CFDE_TextOut::ReloadLinePiece(CFDE_TextOut::Line*, CFX_RectF const&) () at ../../xfa/fde/cfde_textout.cpp:472
#3  0x000055555c2fc26c in CFDE_TextOut::Reload(CFX_RectF const&) () at ../../xfa/fde/cfde_textout.cpp:446
#4  0x000055555c2fab97 in CFDE_TextOut::DrawLogicText(CFX_RenderDevice*, fxcrt::StringViewTemplate<wchar_t>, CFX_RectF const&) () at ../../xfa/fde/cfde_textout.cpp:291

details

void CFDE_TextOut::ReloadLinePiece(Line* pLine, const CFX_RectF& rect) {
  ......
  while (iPieceIndex < iPieceCount) {
    size_t start = start_char;
    size_t end = pPiece->char_count + start;
    while (start < end) {
      dwBreakStatus = m_pTxtBreak->AppendChar(text_span[start]);
      if (!CFX_BreakTypeNoneOrPiece(dwBreakStatus))
        RetrievePieces(dwBreakStatus, true, rect, &start_char, &iPieceWidths);

      ++start;
    }
    ++iPieceIndex;   //bug, after the step, the index may equal to iPieceCount, lead to oob
    pPiece = pLine->GetPieceAtIndex(iPieceIndex);
  }
  ......
  m_pTxtBreak->Reset();
}

fix

void CFDE_TextOut::ReloadLinePiece(Line* pLine, const CFX_RectF& rect) {
  ......
  while (iPieceIndex < iPieceCount) {
    if (iPieceIndex != 0 ) pPiece = pLine->GetPieceAtIndex(iPieceIndex);
    size_t start = start_char;
    size_t end = pPiece->char_count + start;
    while (start < end) {
      dwBreakStatus = m_pTxtBreak->AppendChar(text_span[start]);
      if (!CFX_BreakTypeNoneOrPiece(dwBreakStatus))
        RetrievePieces(dwBreakStatus, true, rect, &start_char, &iPieceWidths);

      ++start;
    }
    ++iPieceIndex;  
  }
  ......
  m_pTxtBreak->Reset();
}

Layer support?

I need create a pdf, and need many layer in one page. as far as I know, only libpdf can do that, but it costs a fee. so...

emoji unicode error

when pdf include emoji，such as：😄
unicode=0x1f604

when use ms word to generate pdf

the unicode include space

https://pdfium.googlesource.com/pdfium/+/refs/heads/main/core/fpdfapi/font/cpdf_tounicodemap.cpp

when space is break，so get unicode=0xd83d

but right is =[d8,3d,de,04], then [d8,3d,de,04].decode('utf-16-be') => '😄'

Proposal: Right click link in PDF and open link in new tab

I am sorry if this is not at all the place to propose something like this.

When in a PDF and there is a link, it would be cool if I could right click and open in a new tab.

Upstream not tracked

Hello,

This gihub clone does not track the git repo at https://pdfium.googlesource.com/pdfium/.
The last commit on this fork is dated May 13, 2020, whereas the last commit on google git is July 23, 2021.
The delta is currently 14 months, and counting.

It would be nice if this repo would track upstream once again.

Thanks

mailDoc function is broken in JS (no attachment in email)

pdfium/fxjs/cjs_document.cpp

Line 349 in 70c2db3

m_pFormFillEnv->JS_docmailForm(pdfium::span<const uint8_t>(), bUI, cTo,

it seems that an empty span is provided to the JS_docmailForm function (which is triggered by mailDoc from the JS context).

This results in the email client opening without the attachment, which is not in line with the Adobe spec.

chromium / pdfium Goto Github PK

pdfium's Introduction

Chromium

pdfium's People

Contributors

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pdfium's Issues

pdfium out of bound bug

Bug

details

fix

Layer support?

emoji unicode error

Proposal: Right click link in PDF and open link in new tab

Upstream not tracked

mailDoc function is broken in JS (no attachment in email)

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