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2018-05-08Add constants for PDF 1.7 spec, table 7.2 and 7.3.Lei Zhang
Add constants/transparency.h. The header lists constants from chapter 7 of the PDF spec. BUG=pdfium:1049 Change-Id: I66bd6fceb24807eec9c308e2e47cec3f2f836ffb Reviewed-on: https://pdfium-review.googlesource.com/32177 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-08Split CCodec_FlateScanlineDecoder in two.Lei Zhang
Move the predictor code into the CCodec_FlatePredictorScanlineDecoder sub-class. Change-Id: I5a56ba5e051cf55e8fdd039bd38089684ed257be Reviewed-on: https://pdfium-review.googlesource.com/31272 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-08Simplify more code in CPDF_TextObject.Lei Zhang
- Move code into a GenerateSpace() function. - Break apart some font size conversions. Change-Id: I4d5ea112fc004a31ac38b7c19ff77fcbfe764d38 Reviewed-on: https://pdfium-review.googlesource.com/32157 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-08[fm2js] Create fewer CFX_WideTextBuf classesDan Sinclair
This CL modifies the formcalc transpiler to create less CFX_WideTextBuf classes as we convert to JavaScript. This can take some pathalogical formcal from 20sec to convert to .5sec. Bug: chromium:834575 Change-Id: I428883297bbc3a6a325a4ab0ad51834f2f02ab82 Reviewed-on: https://pdfium-review.googlesource.com/32154 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-08Move CalculatePitch8() to core/fxcodec.Lei Zhang
Use it in more places there. Change-Id: I477670a5946ec9033ad5f2bef0fbcddb52682066 Reviewed-on: https://pdfium-review.googlesource.com/31271 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-08Rename CPDF_Document::GetPage() to GetPageDictionary().Tom Sepez
Avoids a conflict should we wish to have the document actually track pages, with a GetPage() that returns CPDF_Page. Do the same thing to CPDF_DataAvail along the way. Add some missing consts as well. Change-Id: I2cb2213cc4c0649662fceab80407ee4a3f4cf30e Reviewed-on: https://pdfium-review.googlesource.com/32158 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-08Make one more CPDF_PageObjectHolder member protected.Lei Zhang
Change-Id: Id9288d504f063759f69632ab59b0a21569ff76d8 Reviewed-on: https://pdfium-review.googlesource.com/32113 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-07Make more CPDF_PageObjectHolder members protected.Lei Zhang
Change-Id: Id31b9f6ac33971c47cdb378ff7f9ca7d33f899b9 Reviewed-on: https://pdfium-review.googlesource.com/32112 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-07Make CPDF_PageObjectHolder::m_iTransparency protected.Lei Zhang
Also initialize members in the header. Change-Id: Id814c4c5042c9d4989fa92b78f68c17f4949f09d Reviewed-on: https://pdfium-review.googlesource.com/32111 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-07Add some getters for CPDF_PageObjectHolder.Lei Zhang
Change-Id: I3fe99ecb17d37f893ce5d0d59219c82ee31fe7ea Reviewed-on: https://pdfium-review.googlesource.com/32110 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-07Move codepage tables from cpdf_document.cpp to fx_codepage.cppTom Sepez
Avoids scrolling past this noise when looking at document code. No functional changes. Change-Id: I4684a8cf4d8894c699cd1c980bc5fc41b2179ad1 Reviewed-on: https://pdfium-review.googlesource.com/32156 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-07Use unowned ptr for CPDF_Page::m_pView.Tom Sepez
Change-Id: I9d87cefc18a3a468e1bec797bc7711194f6444c7 Reviewed-on: https://pdfium-review.googlesource.com/32155 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-07Move some CPDF_TextPage methods into an anonymous namespace.Lei Zhang
Change-Id: I959d687d7d46fa61e1fe097b0b876ad02d2b123c Reviewed-on: https://pdfium-review.googlesource.com/32153 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-07Initialize CPDF_RenderStatus members in the header.Lei Zhang
Also move static private members into the .cpp file. Change-Id: Idbbdc7c78ac4199968888466caa20c58a5653dfd Reviewed-on: https://pdfium-review.googlesource.com/32151 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-07Initialize CPDF_TextPage members in the header.Lei Zhang
Change-Id: I667a3cd696d44692fa3d73bdee7c2f48d3039255 Reviewed-on: https://pdfium-review.googlesource.com/32152 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-07Use checked large integer in ContinueQuickStretchchromium/3424Ryan Harrison
This existing code has the potential for an integer overflow in it. When overflow occurs in this function scaling may partially succeed. This is due to how out of range values are being clamped, which implicitly swallows the overflow. This CL changes the calculation to be performed in a 64-bit space and then attempts to down cast it back to 32-bit space at the end. Because there are multiple steps it is possible for an intermediate value to cause an overflow in 32 bit space, but the final value to be valid. If the downcast is not possible then the stretch operation is failed. An existing test case has been updated, since it encoded an incorrect result. BUG=chromium:839245 Change-Id: I637cc1e2d6c6c2d5394599104f76352c20ead021 Reviewed-on: https://pdfium-review.googlesource.com/32056 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-05-07[xml] Move members to method variables in CFX_XMLParserDan Sinclair
This CL moves several of the member variables to CFX_XMLParser::DoSyntaxParse as they are only used in that method. The names of the members have been updated to make their usage clearer. Change-Id: I460f2bad0181ece278752bd8d93d6bf63dc6d70a Reviewed-on: https://pdfium-review.googlesource.com/32050 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-04Check CJBig2_Image is valid before filling.chromium/3423chromium/3422chromium/3421Lei Zhang
Skip a lot of work that will all fail anyway. BUG=chromium:838347 Change-Id: Iba45120e436b5547e106feb27dadea92cc948258 Reviewed-on: https://pdfium-review.googlesource.com/32053 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-03Invalidate GIF input buffer when moving file cursor backwardschromium/3420chromium/3419Ryan Harrison
The current implementation of the GIF codec does not handle the file cursor moving backwards correctly. Specifically the input buffer that the data is being read into is not invalidated, so if the entirity of the buffer hasn't been consumed, a chunk of it will be moved to the front before reading in more data, which is just incorrect. Additionally, depending on the specific series of operations, it is possible that the buffer was allocated for more space then had been read into it and the uninitialized portion at the end is being copied to the beginning. The file cursor may move backwards when dealing with an animated gif or other image with multiple frames, since all of the control data is read in on load, and future calls specify what frame to fetch. The code has been changed to treat the input buffer as invalid when moving the cursor to a frame location, which will bypass any of the problematic unused saving behaviour. A call to std::min has been added to prevent allocation of an input buffer larger then the file size. Additionally this CL refactors GifReadMoreData to be clearer about what calculations are occuring, since the existing code reuses a number of vaguely named variables, making it difficult to follow. BUG=chromium:839348, chromium:839361 Change-Id: I2865658187bdf30bcad13ef4cac4f51a8966db11 Reviewed-on: https://pdfium-review.googlesource.com/32054 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-05-03Use strict types in FPDF API, try #3Tom Sepez
Rather than messing with actual inheritence, add type-checking wrappers and just blatantly cast to incomplete types. Along the way, this points out places where we would downcast without checking, which I fix. Change-Id: Ieb303eb46ad8522dfe082454f1f10f247ffd52d5 Reviewed-on: https://pdfium-review.googlesource.com/32030 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-03Add CPDF_Page::Extension::GetDocExtension()Tom Sepez
In turn, add CPDF_Document::Extension::GetPDFDoc() so that we can use the abstract return type in more places. Mark an internal-only cpdfxfa_context method as private while we're at it. Change-Id: I08e64f4b9438bf2f731c3a37cf2a41152bbbd8fa Reviewed-on: https://pdfium-review.googlesource.com/31916 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-03Make GetPDFDocument return a CPDF_Docment*, not void*.Tom Sepez
Small oversight. Gets type safety. Change-Id: I669c2c990fdf9013f4bc4835738132ed76e734b8 Reviewed-on: https://pdfium-review.googlesource.com/31991 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-02Convert hand rolled buffer reader in CFX_MemoryStreamRyan Harrison
BUG=pdfium:1007 Change-Id: Ib8aecf2e4833f22a4288f6e1381edc11d114c865 Reviewed-on: https://pdfium-review.googlesource.com/31952 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-05-02[xml] Simplify the CFX_XMLParser parse methodsDan Sinclair
This CL moves the switch from CFX_XMLParse::Parse into CFX_XMLParser::DoSyntaxParse. This means all the work to build the tree is now done in one place instead of spread between the two methods. Change-Id: Ie9c6cd67795c3fcbd3e305187a06cd727d386a7c Reviewed-on: https://pdfium-review.googlesource.com/31950 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-05-02[xml] Rename CFX_XMLParser::ParseTextCharDan Sinclair
This CL renames ParseTextChar to ProcessTextChar to make the usage clearer. The method does not do any parsing, it just decides if the char is part of an entity or not. Change-Id: I9b70a82a421b02e2352cd07bd88b1e581d8578b7 Reviewed-on: https://pdfium-review.googlesource.com/31930 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-05-02Add a CFX_XMLDocument class.Dan Sinclair
This CL adds a CFX_XMLDocument to act as the XML node container. All nodes are now owned by the document and the document is returned by the CFX_XMLParser. Classes which parse XML files now store the document instead of the root node. BUG: chromium:835636 Change-Id: I1e07d6115cf14714911d6fd4c3fa920c94fd5faf Reviewed-on: https://pdfium-review.googlesource.com/31313 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-05-02Make several Huffman decoders consistently check for integer overflows.Lei Zhang
BUG=chromium:837972 Change-Id: I6cfa28bff38870419e4b1e2bced427cfcbf843cd Reviewed-on: https://pdfium-review.googlesource.com/31912 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-02Add CPDF_Document::Extension::GetPageCount()Tom Sepez
Another virtual API at the CPDF layer, to avoid a compile time ifdef XFA. Change-Id: Ia95c4d3b3d3b773aaf45c49ebcadff6b16ca18c6 Reviewed-on: https://pdfium-review.googlesource.com/31910 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-01Add CPDF_Document::Extension::DeletePage()Tom Sepez
Replaces one compile-time #ifdef XFA with a dynamic check and a call through a virtual API that prevents the CPDF code from knowing anything about the XFA code. Change-Id: If0ff9b6918b908b3eac824fe1d525c6d4f7316e7 Reviewed-on: https://pdfium-review.googlesource.com/31890 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-01Avoid perpetual spins for parserless CPDF_PagesTom Sepez
This is an obstacle to introducing dummy CPDF_Pages to underly all CPDFXFA_Pages, since we would then have a parserless CPDF_Page, whose parse could never succeed or fail. The m_ParseState would never change, and if the caller dutifully recalls us until that changes, we hang. Small separate CL since it might impact non-XFA cases unexpectedly. Change-Id: I002064e5d4caa44935f50bde0f3b00e3b8cb0bfe Reviewed-on: https://pdfium-review.googlesource.com/31850 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-01Clean up CFX_BidiString.Lei Zhang
- Refer to the string in CFX_BidiString by const-ref. - Remove useless CharAt() method. - Turn a member variable into a local variable. Change-Id: I30f221b7350150c839a793129789d8ea7cc1f331 Reviewed-on: https://pdfium-review.googlesource.com/31670 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-01Make FPDF_Document always be CPDF_Document.Tom Sepez
Greatly minimize the impact between going back and forth from XFA being on/off, so that XFA case is just an extension beyond the non-XFA data structures we've shipped for years, instead of being a complete replacement of them. Change-Id: I6c98206e0ec99ea443547a4931eba912b1764d54 Reviewed-on: https://pdfium-review.googlesource.com/31690 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-01Introduce the concept of CPDF_Page::ExtensionTom Sepez
Similar tp CPDF_Document::Extension, this is a base type for fpdfsdk/ to use to improve layering. While we're at it, make pages point to documents to prove they don't outlive them. Another small step towards not passing XFA objects across FPDF. Change-Id: Idcee9da3a18c06331fa56f3d6c188e4ce27d34f2 Reviewed-on: https://pdfium-review.googlesource.com/31631 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-01Fixes XML Instruction handling in CXFA_DocumentParser.Dan Sinclair
This CL fixes issues with handling XML instructions in CXFA_DocumentParser. Unittests were added to verify the behaviour. Change-Id: Iff8d51d0e6d411419473c9b2c32c700d4bbf86f5 Reviewed-on: https://pdfium-review.googlesource.com/31810 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-05-01Fix CFX_XML and add unit testsDan Sinclair
This CL fixes several issues in the CFX_XML class and adds unit tests. Change-Id: I05270690de8f3c45dceb866e17ef899ae6d23389 Reviewed-on: https://pdfium-review.googlesource.com/31753 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-05-01Add struct CJBig2_GRDProc::ProgressiveArithDecodeState.Lei Zhang
Track the decode state in one data structure. Also grab pointers to data structure members before tight loops when decoding. It turns out referring to this->foo in tight loops can actually slow down decoding. Change-Id: I6a09b08ca06ef05968966055b5ad20f8c89896af Reviewed-on: https://pdfium-review.googlesource.com/31790 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-01Clean up CJBig2_Image compose methods.Lei Zhang
- Mark them private when possible. - Disambiguate method names. - Make method names match the style guide. - Pass in rects by reference. Change-Id: I0bf848756e81a92d20e46a81cd6260b660eaf482 Reviewed-on: https://pdfium-review.googlesource.com/31772 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-30Reorganize Unicode_GetNormalization() some more.Lei Zhang
Change-Id: I183a53d08f5da73d788c92b53382e3fac3b823e2 Reviewed-on: https://pdfium-review.googlesource.com/31671 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-30Add CPDF_TextPage::GetPrevCharInfo() helper method.Lei Zhang
Change-Id: Ie5bea82757682390b274ad2da77d1686cc597046 Reviewed-on: https://pdfium-review.googlesource.com/31657 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-04-30Simplify Unicode_GetNormalization() and caller.Lei Zhang
Change-Id: I9a5acb59790fd8527ced745370bdfe35e4d21c36 Reviewed-on: https://pdfium-review.googlesource.com/31656 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-30Fix some nits in CPDF_TextPage.Lei Zhang
Change-Id: Ib0b1d014af31493c73a74d81c1f3454a203da949 Reviewed-on: https://pdfium-review.googlesource.com/31655 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-30Saner memory managment in cttfontdesc, part 1.Tom Sepez
A subsequent patch will tackle the ad-hoc ref counting, but we can tidy this before going down that hole. Decouple CTTFontDesc creation from face setting. Remove union and treat single-entry case as vector's first element. Pass unique_ptr to prove memory ownership. Change-Id: Ic427798da04f3afbb65a56ee10045b9f22457a73 Reviewed-on: https://pdfium-review.googlesource.com/31730 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-04-27Tidy cfx_gif.h.chromium/3415chromium/3414chromium/3413Tom Sepez
Use C++ style struct syntax (file already has other C++ features). Assert that things have packed as intended since they map to known layouts. Order these asserts in the same order as .h file. Change-Id: I0a006c4b5789fb544783f488d5b4e609e32c7ec1 Reviewed-on: https://pdfium-review.googlesource.com/31654 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-04-27Fix illegal cast in core/fxge/win32/fx_win32_gdipext.cppTom Sepez
Bug: pdfium:243 Change-Id: I36ebe64daa042b998878ffacfca9846b5303450b Reviewed-on: https://pdfium-review.googlesource.com/31652 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-04-27Remove CJBig2_HuffmanTable::InitCodes().Lei Zhang
Use CJBig2_Context::HuffmanAssignCode() instead. Change-Id: Ief187420494a8cefa26eeedb98a55683caf7807b Reviewed-on: https://pdfium-review.googlesource.com/31538 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-04-27Replace void* with CFX_GifPalette* in fxcodecTom Sepez
The type is known where we need it, and we avoid some dubious casts in the process. Also avoid clumsy indexing and use the members directly in computations. Bug: pdfium:243 Change-Id: I1e061465fd0f9045cf5b82067204f26ac7df53f0 Reviewed-on: https://pdfium-review.googlesource.com/31651 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-04-27Change CJBig2_HuffmanTable to use struct JBig2HuffmanCode.Lei Zhang
Change-Id: I6461f81a3d8005efa75b8141c18c502a63252883 Reviewed-on: https://pdfium-review.googlesource.com/31537 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-04-27Adjust CJBig2_Context::HuffmanAssignCode().Lei Zhang
It looks a lot like CJBig2_HuffmanTable::InitCodes(). Port over the UBSAN error fix from commit 76c9a1b1. BUG=chromium:709781 Change-Id: I5d2f8fb013c09099c82b0565627b77e4fb0f8a98 Reviewed-on: https://pdfium-review.googlesource.com/31536 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-04-27Simplify CJBig2_Context::DecodeSymbolIDHuffmanTable().Lei Zhang
One of its parameters is a member variable. Change-Id: I0dcb78275d9ea5b05a77e211d178a0efb8699395 Reviewed-on: https://pdfium-review.googlesource.com/31535 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-04-27Use std::function in CJBig2_GRDProc.Lei Zhang
Pick from a set of functions before calling it, instead of having code to call all of the functions with the same parameters. Change-Id: I7f479948f50bdc1a9eb2764d5eb7505dc7434418 Reviewed-on: https://pdfium-review.googlesource.com/31533 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
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