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2018-08-14Remove default level from FPDF_GetFieldAttr().Tom Sepez
Make call into internal helper function. Write helper function so as to be obviously tail-recursive, and remove redundant null check. Change-Id: If29f9be66b07239b35de9ac9241d5ef72365889b Reviewed-on: https://pdfium-review.googlesource.com/40130 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-14Remove unused form/args of AddWindowsFont()Tom Sepez
Change-Id: I38b508b5518568ff134b70e0e494e5267571c1ca Reviewed-on: https://pdfium-review.googlesource.com/40110 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-14Add CPDF_Type1Font::IsBase14Font() to replace GetBase14Font().Lei Zhang
IsBase14Font() is what its only caller really needs. Also use it in Load() which does the same check, and restructure Load() to have an early return. Change-Id: I1d051d10b80aa82bcf590c79169ffe29607b3c13 Reviewed-on: https://pdfium-review.googlesource.com/39970 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
2018-08-14Remove CFX_BufferSeekableReadStream.Lei Zhang
Replace it with CFX_ReadOnlyMemoryStream, which does the same thing. Take some checks from CFX_BufferSeekableReadStream and add them CFX_ReadOnlyMemoryStream. Change-Id: I25554c3aec3ec96967f8df16ca68a64dba121b6f Reviewed-on: https://pdfium-review.googlesource.com/40070 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-14Remove more default arg = nullptr cases.Tom Sepez
Bring in line with standards. Remove argument entirely for mac code that is always nullptr. Change-Id: I0710bdbd51fc0bc2e1d428ef44976be39a631147 Reviewed-on: https://pdfium-review.googlesource.com/40091 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-14Remove |bTakeOver| parameter from CFX_MemoryStream ctor.Lei Zhang
It is always true now. BUG=pdfium:263 Change-Id: I74fd0091f5815701718e8cd5acc6e7a0de772a85 Reviewed-on: https://pdfium-review.googlesource.com/40031 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-13Make CFX_ReadOnlyMemoryStream take a span.Lei Zhang
Change-Id: Id097320ab2d9b5d1579582e5797e29c701499501 Reviewed-on: https://pdfium-review.googlesource.com/39991 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2018-08-13Change CFDF_Document::ParseMemory() to use pdfium::span.Lei Zhang
Change-Id: I1e9b02f0cb2628d41bc1c6bdcfcfa09c36faf97e Reviewed-on: https://pdfium-review.googlesource.com/39990 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-13Implement CFX_CodecMemory.Lei Zhang
This class is much simpler than CFX_MemoryStream and does only what CFX_BmpDecompressor and CFX_GifContext needs. Swap out CFX_MemoryStream and remove CFX_MemoryStream::Seek(). BUG=pdfium:263 Change-Id: Ifd8ce4d2b6c9fedd6ec842d46f54fc8e654fbca7 Reviewed-on: https://pdfium-review.googlesource.com/39880 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-08-13Use CFX_ReadOnlyMemoryStream in more places.Lei Zhang
More const pointers, less const_casts. BUG=pdfium:263 Change-Id: I47fc6d8f2f837390e40ad22d8b67946065294eaa Reviewed-on: https://pdfium-review.googlesource.com/39879 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-13Mark CPDF_Font::GlyphFromCharCodeExt() and friends Mac only.Lei Zhang
Change-Id: I4906351a6e21fb8480670a6daf15bd7cb9e441c5 Reviewed-on: https://pdfium-review.googlesource.com/39911 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
2018-08-13Move CPDFSDK_MemoryAccess to fxcrt.Lei Zhang
Rename it CFX_ReadOnlyMemoryStream and swap out one use of CFX_MemoryStream. BUG=pdfium:263 Change-Id: I15012df156a6a4d7c36f6fd58f32c355eae5fa1a Reviewed-on: https://pdfium-review.googlesource.com/39878 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-13Split CFX_MemoryStream::m_dwFlags into two bools.chromium/3522Lei Zhang
Make them const, and remove m_nGrowSize which is always the same value. Also remove unused method and make GetBuffer() non-const. Change-Id: I272aa4c268c4a887e155800b7c8c10892b343465 Reviewed-on: https://pdfium-review.googlesource.com/39877 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-11Cleanup CFX_CTTGSUBTable.chromium/3521chromium/3520Lei Zhang
Do all the parsing inside the constructor. Make GetVerticalGlyph() and related getters const methods. Change-Id: I21118cf98048cb6bbfc0999604d2434d4acafef6 Reviewed-on: https://pdfium-review.googlesource.com/39496 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
2018-08-11Initialize CPDF_CIDFont members.Lei Zhang
Given POD members default values, rather than hoping Load() will. Also reorder members to pack better. Change-Id: I493db11eb3d115e49f4e914e53a1eb55fa2046f0 Reviewed-on: https://pdfium-review.googlesource.com/39495 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
2018-08-11Simplify CPDF_SimpleFont::LoadPDFEncoding().Lei Zhang
Remove parameters that always refer to the same member variables. Also mark the input object as const since it is only read from. Change-Id: I136ece1ce5b0c00b02d1a76e1540ff26e6f01858 Reviewed-on: https://pdfium-review.googlesource.com/39494 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
2018-08-10Kill some optional parameters that are always supplied.Tom Sepez
No need to even bring any .cpp files in line with these headers. Change-Id: I934169d77ae09adc11f02e5ea92b1f8b078c9477 Reviewed-on: https://pdfium-review.googlesource.com/39876 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-10Remove unused form of PDF_EncodeText().Tom Sepez
Perform indexing via WideString::operator[] which will at least assert bounds, if not enforce them. Change-Id: I7b03cfd718c4acd642af910c2ca06f86d178e5fd Reviewed-on: https://pdfium-review.googlesource.com/39873 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-10Make the 4th parameter in CPDF_Form non-optional.Lei Zhang
Instead, add a 3-parameter constructor that delegates to the 4-parameter constructor. Change-Id: Ied6c55360084ea26b07dbaa449bf155b5db182f0 Reviewed-on: https://pdfium-review.googlesource.com/39872 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-10Minor cleanup in CPDF_ContentParser.Lei Zhang
Add more asserts and use more constants. Change-Id: I51f1d9d1b501f4e99d9793b6c803676b7221be17 Reviewed-on: https://pdfium-review.googlesource.com/39871 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-10Make CPDF_PSFunc::m_PS mutable.Tom Sepez
Preferred over const_cast<> to show how that state is used. Change-Id: Ia6fe6bf46fb7fa8e701481b1604073b5d7f222fa Reviewed-on: https://pdfium-review.googlesource.com/39870 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-10Remove const args and const_casts where not required.Tom Sepez
Introduce const/non-const versions of method where required. Part of the war on const_cast<>. Tidy one expression to use [] instead of .data(). Change-Id: I41e45669c79eee242ff2244c7dc3afcf6386a433 Reviewed-on: https://pdfium-review.googlesource.com/39852 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-10Remove direct calls to timechromium/3519Ryan Harrison
Replaces them with calles to the proxy function, FXSYS_time, so that tests may use a stable time value instead of the wall clock value. BUG=pdfium:1104 Change-Id: I4743c4634f56d4a6cba1f1130c4562a35cee1887 Reviewed-on: https://pdfium-review.googlesource.com/39853 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-08-10Add proxy for syscall timeRyan Harrison
This CL adds a proxy, FXSYS_time, for the time syscall, so that a testing mechanism can be implemented. Specically there is now a flag for pdfium_test, --time=, that allows setting the time since the epoch that will be returned. This plumbed all the way down into the proxy and allows for stable results for tests that depend on getting the current time. There are other places in the code base that will need to be patched like this, that will be dealt with in follow on CLs. BUG=pdfium:1104 Change-Id: I2de185f8d47abe46704dd579c13a54948b7f81e0 Reviewed-on: https://pdfium-review.googlesource.com/39750 Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-08-10Remove |typedef struct| in favor of just |struct|.Tom Sepez
Because I saw one in some other code and decided to hunt them all. These are all defined in C++ context, so no chance of C compatiblity. Note that such a declaration without a struct tag will bypass the [chromium-style] out-of-line constructor/destructor warnings, so add constructors/destructors where required. Change-Id: Ib821d8bc2f68ccf7028b0f73432e8e7c93a953ba Reviewed-on: https://pdfium-review.googlesource.com/39851 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-10Consolidate const_casts<> in FXFT_Get_Name_Index()Tom Sepez
There's a missing const in a qualifier in the third party FT library header, so rather than casting on every invocation, consolidate these into our wrapper macro. This may be easier to remove should the API ever get corrected. Part of the war on const_cast<>. Change-Id: I80cdb220730f40297e54aee10acc8bbd2c983b6d Reviewed-on: https://pdfium-review.googlesource.com/39850 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-10Make CFX_ImageTransformer::CalcData's bitmap non-const.Lei Zhang
Change-Id: I1d5e3e73804efb0a8ed467d29777d017935a8824 Reviewed-on: https://pdfium-review.googlesource.com/39833 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-10Fix a JBIG2 decoding regression.Lei Zhang
When trying to sanity check SBNUMINSTANCES for JBIG2 text regions for https://crbug.com/837192, the check did not take data encoding into account. Fix this by assuming there is a potential for 16:1 compression in the lossless encoding. BUG=chromium:871848 Change-Id: I991dacff9fbefa4e302f5ce92a355902ef94308a Reviewed-on: https://pdfium-review.googlesource.com/39790 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-10Remove const_cast<> from CFX_LZWDecompressor::Decode() caller.Tom Sepez
Because the argument to Decode() can be const. Part of the ongoing war against const_cast<>. Change-Id: I3a8402277dbfc4fd80b1dd60225de57b732713f8 Reviewed-on: https://pdfium-review.googlesource.com/39832 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-10Add CFX_DIBSource::GetWritableScanline().Tom Sepez
Remove a bunch of const_cast<uint8_t*> or equivalent. This will also help when we convert to span<>, since casting spans is a nuisance. Change-Id: I330e5041cbaf33a84425fc4242a3dfacf5ca8011 Reviewed-on: https://pdfium-review.googlesource.com/39831 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-09Move all utf8 decoding under fx_string.hTom Sepez
Put encoder in cfx_utf8encoder.{h,cpp} to parallel decoder. Add tests, and fix one corner case involving 0xff. Change-Id: Ib97540afdc708bcc6280a79c76734ec68ea72690 Reviewed-on: https://pdfium-review.googlesource.com/39770 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-09Change CPDF_Font::GetNextChar()'s in-out parameter to pass by pointer.chromium/3518Lei Zhang
Instead of passing by non-const reference. Adjust the override in CPDF_CIDFont and CPDF_CMap::GetNextChar() as well. Change-Id: I0ee6dc21077101cbeeb0e334498075fc463a2d65 Reviewed-on: https://pdfium-review.googlesource.com/39492 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-09Revert "Rework of CPDF_Parser::GetLastObjNum."Lei Zhang
This reverts commit b07deb3fc1f54bd700a66df573bfcbc4bcc1d787. Reason for revert: Causing https://crbug.com/870467 Original change's description: > Rework of CPDF_Parser::GetLastObjNum. > > Change-Id: I0481774858a9d9823580e1207807e35be8a9eea9 > Reviewed-on: https://pdfium-review.googlesource.com/36270 > Reviewed-by: Lei Zhang <thestig@chromium.org> > Commit-Queue: Art Snake <art-snake@yandex-team.ru> TBR=thestig@chromium.org,art-snake@yandex-team.ru # Not skipping CQ checks because original CL landed > 1 day ago. Change-Id: I58e23c752a582c21be8ba45e3538e63c0fa64504 Reviewed-on: https://pdfium-review.googlesource.com/39810 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-08Remove unused codepage from WideString::GetWideString().Tom Sepez
Consolidate code into sole caller, which always retrieves a string from the "default ANSI code page". Add unit test for this code path. Fix sign extension bug giving bogus 0xffffff80 codepoint uncovered by unit test on non-windows. Note windows result is different because the system conversion routine does actually work. Change-Id: I1c1246b203ee66e9ff0b6fccf97594788bcd0fca Reviewed-on: https://pdfium-review.googlesource.com/39730 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-08Move ByteString::FromUnicode() to WideString::ToDefANSI()Tom Sepez
Turns out that "FromUnicode" is misleading in that, on linux, it simply removes any characters beyond 0xFF and passes the rest unchanged, so no unicode decoding actually takes place. On Windows, it passes it into the system function specifying FX_CODEPAGE_DefANSI, converting it into the so-called "default ANSI code plane", passing some characters, converting others to '?' and still others to 'A'. Either way, nothing resembling UTF8 comes out of this, so pick a better name. These now immediately look suspicious, so a follow-up CL will see which ones should really be WideString::UTF8Encode() instead. Making this a normal method on a widestring rather than a static method on a bytestring feels more natural; this is parallel to the UTF8Encode and UTF16LE_Encode functions. Add a test that shows these conversions. Change-Id: Ia7551b47199eba61b5c328a97bfe9176ac8e583c Reviewed-on: https://pdfium-review.googlesource.com/39690 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-07Move CPDF_Font::LoadPDFEncoding() to CPDF_SimpleFont.Lei Zhang
It is not used in the CPDF_Font base class. Change-Id: I6033a5dd422179eb95f19a2f2ecf06d007f3223f Reviewed-on: https://pdfium-review.googlesource.com/39493 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-07Change CPDF_Font::GetFace() to HasFace().Lei Zhang
Callers do not actually need the returned handle. Change-Id: I1b8c0be00809eb7fdae9f6e95b4b325e75f4b847 Reviewed-on: https://pdfium-review.googlesource.com/39491 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-07Make CPDF_Font::GetFontBBox() return the bounding box.Lei Zhang
Instead of using an out parameter. Fix nits in the only caller as well. Change-Id: I04eb92705b2fbda001191c36da972eee499acbc7 Reviewed-on: https://pdfium-review.googlesource.com/39490 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-07Remove unused codepage code from GetByteString().Tom Sepez
It is only called ever called from one place with 0 (FX_CODEPAGE_DefANSI), with more complicated usage being funneled directly into FXSYS_ code. Next, fold it into ByteString::FromUnicode(). Change-Id: I85aa0dd3a4ca8cddcff22533e0a284ff3f5535ee Reviewed-on: https://pdfium-review.googlesource.com/39670 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-07Add FPDFTextObj_GetText() APIMiklos Vajna
Generalize CPDF_TextPage::GetTextByRect(), so that it's possible to get the text from a text page using a predicate, that way we can easily get the text that belongs to single text object as well. Change-Id: Ia457af0f41184694dc1481709be72b35685bce7f Reviewed-on: https://pdfium-review.googlesource.com/39530 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-07Add test for {Byte,Wide}String Operator+().Tom Sepez
Precursor to converting some Format() operations to simple string addition. Change-Id: I3a159f5ac548ea14586d87e7d56d1ec288898b0d Reviewed-on: https://pdfium-review.googlesource.com/39590 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-07Combine redundant CJBig2_Image code.Tom Sepez
Once upon a time, someone cut-n-pasted ~300 lines of code to avoid creating a default rectangle and to save a couple of additions. Then one path got one set of fixes (safe ints) and the other path got a second set of fixes (source bounds checks). Re-unify, picking up all the fixes, since they are identical otherwise. Change-Id: I099e854bc8ad027efabd5c2077c4319ee8221256 Reviewed-on: https://pdfium-review.googlesource.com/39550 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-07Speculative fix for null deref above ThrowNoDefaultPropertyExceptionTom Sepez
Avoid possibility of an unterminated string or nullptr by avoiding stringviews, since the non-view classes copy and always provide a suitable result. Always use %ls and widestrings in wprintf() variants, since that combination is consistent across our platforms (%s, %S, etc. have idiosyncracies). Bug: 870952 Change-Id: Ief62a42c3486e8298f9583b56e9333db1a74972a Reviewed-on: https://pdfium-review.googlesource.com/39551 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-06Avoid invalid object numbers in CPDF_Parser::LoadCrossRefV5().chromium/3515Lei Zhang
BUG=chromium:865272 Change-Id: I4606bdfd78ebd6553c36b985b4f49d07b579ac40 Reviewed-on: https://pdfium-review.googlesource.com/39438 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Art Snake <art-snake@yandex-team.ru>
2018-08-06Small optimization in CJBig2_Image::SubImage()Tom Sepez
We can use the memcpy() path whenever byte aligned. Split code into helper methods. Add test for fast path specifically. Change-Id: I52f6129b0e788eb2da60536cfa6fce12a0609375 Reviewed-on: https://pdfium-review.googlesource.com/39432 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-06Check for null object type in CPDF_Parser::LoadCrossRefV5().Lei Zhang
BUG=chromium:871042 Change-Id: Id4566b29270ab738c69d46cb96fc134485d6ee2f Reviewed-on: https://pdfium-review.googlesource.com/39510 Reviewed-by: Art Snake <art-snake@yandex-team.ru> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-06Do more CPDF_Parser::LoadCrossRefV5() cleanup.Lei Zhang
- Use range for-loop to avoid needing "i" and "j". - Avoid repeatedly calculating "startnum + j". - Reduce levels of nested ifs. - Remove variable that is only used once. Change-Id: I9d08cef1082812fcfaa2699f65720165c52ebcff Reviewed-on: https://pdfium-review.googlesource.com/39437 Reviewed-by: Art Snake <art-snake@yandex-team.ru> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-06Clean up a nit that was identified after CQing an earlier CLRyan Harrison
Change check to use empty instead of size <= 0. Also added a comment to the check to make it clear what is being guarded against BUG=chromium:863098 Change-Id: I993085c04ab66a9e2869c83d8fb48883ec0bbf71 Reviewed-on: https://pdfium-review.googlesource.com/39497 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-04Use more text object state in DrawTextPathWithPattern().chromium/3514chromium/3513chromium/3512Lei Zhang
BUG=chromium:668762 Change-Id: Iaf3fc9bcf68b8da2c947bbd78c5d72f78195b621 Reviewed-on: https://pdfium-review.googlesource.com/35991 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-04Clarify integer types in CPDF_Parser::LoadCrossRefV5().Lei Zhang
GetVarInt() returns uint32_t. So assign the results to variables of type uint32_t. Then make sure those results get passed on as uint32_t, or use pdfium::base::IsValueInRangeForNumericType<T>() to make sure they can be converted to type T safely. Change-Id: I4556f0b89b4e5cdb99ab530119c8051ec8a9411d Reviewed-on: https://pdfium-review.googlesource.com/39436 Reviewed-by: Art Snake <art-snake@yandex-team.ru> Commit-Queue: Lei Zhang <thestig@chromium.org>
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