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2018-08-22Change in/out params in CBC_PDF417Writer::Encode to only out.Henrique Nakashima
The value passed was always 0. This also prevented the scaling from being executed, so that can be removed. Change-Id: I143a9ed31b231d3b9fa297b0bf9dcc0fa6072889 Reviewed-on: https://pdfium-review.googlesource.com/40990 Reviewed-by: Lei Zhang <thestig@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-08-22Remove unused setters in CBC_BarcodeMatrix and CBC_BarcodeRow.Henrique Nakashima
Change-Id: I01c83d96f07eac776e8269b7d1e06b2b07ca75ea Reviewed-on: https://pdfium-review.googlesource.com/40932 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-08-21Remove dead code in CBC_CommonBitMatrix.Henrique Nakashima
Change-Id: Ie22666217b040872e576d58d0afa77138bca3870 Reviewed-on: https://pdfium-review.googlesource.com/40931 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-08-21Remove excessive padding above and below PDF417 barcodes.Henrique Nakashima
Bug: pdfium:1135 Change-Id: Iea16a65a5eebcb914192eb49de17a2c4eda83320 Reviewed-on: https://pdfium-review.googlesource.com/40690 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-21Optimize rendering of two dimensional barcodes: defer upscale.Henrique Nakashima
Defer upscaling as late as possible so that intermediary data structures are smaller. Made a couple of changes along the way to preserve the barcode correctness and fix some padding issues. For my example, this is a ~21x improvement in rendering time, down from ~190ms per barcode to ~9ms. Bug: 872907, pdfium:1135 Change-Id: If532e0f168f02fea9c31d473f34c0009da4f4612 Reviewed-on: https://pdfium-review.googlesource.com/40010 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-08-17Optimize rendering of 2D barcodes: create Rect only on black regions.Henrique Nakashima
This is a ~2x improvement in rendering time, taking my example down from ~390ms per barcode to ~190ms. Bug: 872907 Change-Id: Iecddc30edf92ad943765d4382b332e00d493c320 Reviewed-on: https://pdfium-review.googlesource.com/40533 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-08-16Allow PDF417 barcodes to reduce modules by shaving off padding.Henrique Nakashima
The way it was working before is: Look at the width and height provided for the barcode. If the maximum number of codewords to fit in that space was within the spec limits (1 <= cols <= 30 and 3 <= rows <= 90), cram as many codewords as possible. The unused space was filled with padding. With this CL, instead look at the amount of content that needs to fit into the barcode and favor fewer codewords rather than as many as possible. Bug: pdfium:1135 Change-Id: Ia96be82ec7c5f4f920cff58def1a44000bf04761 Reviewed-on: https://pdfium-review.googlesource.com/40350 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-08-16If rows need to overflow in a PDF417 barcode, keep it to a minimum.Henrique Nakashima
By using mincols as fallback, the exact opposite is done. Maxcols should be used instead to minimize the size. This is important so the next fix (https://pdfium-review.googlesource.com/c/pdfium/+/40350) does not break a test that was working well by coincidence. Bug: pdfium:1135 Change-Id: I95ddc547654966f655e2556c1796503a5456fb8f Reviewed-on: https://pdfium-review.googlesource.com/40330 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-08-16Optimize rendering of two dimensional barcodes: deduplicate regions.Henrique Nakashima
Reduce the logical size of the barcode by removing unnecessary region duplication. As far as I can tell, the line thickness is useless and the aspect ratio causes arbitrary changes in rounding, but ultimately the dimensions of a barcode are defined by its width and height, rather than by this ratio. The improvement with this CL is from ~580ms to ~390ms per barcode, so about 1.5x. Combined with https://pdfium-review.googlesource.com/c/pdfium/+/40010 the improvement is to ~15ms, which is about 39x. This also fixes the rendering of the barcode in the pixel and corpus tests. You can verify this pointing a barcode reader app at the screen. It does not however fix every case, as the unit test is still unreadable. Bug: 872907, pdfium:1135 Change-Id: Ic28e60f54719552cfe69ace7ebc3f730c338a129 Reviewed-on: https://pdfium-review.googlesource.com/40030 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org> Reviewed-by: Ryan Harrison <rharrison@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>
2018-07-17Reserve space for result in ::FilterContentsRyan Harrison
This changes the implementation for the specific bug listed and proactively fixes it in the other overrides. The general bug here is that if you concat a WideString in a tight loop without first reserving space, each call will cause an allocation size change and memcpy. This is very expensive and causes ClusterFuzz cases to timeout. BUG=chromium:863295 Change-Id: I6c1d900a31b98cd9ddcf91d1ec0f3973c9cdfa26 Reviewed-on: https://pdfium-review.googlesource.com/38110 Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-07-03Avoid explicit allocs in fxbarcode matrix classes.Tom Sepez
Other cleanups: Remove unused method. Fold Init() into constructor. Return span<> where possible. Change-Id: Ie38d32efb6e63d86ae24e93684903a6dd900810f Reviewed-on: https://pdfium-review.googlesource.com/36810 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-06-19Move fxcrt::{Byte,Wide}Strings with std::move().chromium/3466Tom Sepez
Remove some string copies in barcode that were noticed whilst looking for moves. Change-Id: Ieda34d00f633576ba1f0dca283dcdabfb36f236c Reviewed-on: https://pdfium-review.googlesource.com/35410 Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-06-11Remove explicit calls to x->operator[]Tom Sepez
Because its a code smell of a sort. Change-Id: Id1c1b124f539e31a929701fb9486da9d396d3563 Reviewed-on: https://pdfium-review.googlesource.com/34695 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-06-04Fix a number of unused writes in barcode codeRyan Harrison
This fixes a number of instances where a value is written out to a variable, but never used in the barcode. There are three different types of fixes employed in this CL. If the non-use is a bug, then rewrite the code to actually use the value. If it is an assignment with no side effects, then just remove the entire line. Finally if it is an assignment of a function return value, cast it to void instead to clearly mark that the return is being ignored. Issues found with Clang Static Analyzer. Change-Id: If13a3684cb2db81592cce9a798788a26fcdb4c6d Reviewed-on: https://pdfium-review.googlesource.com/33771 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-05-25Reserve space for code words when creating encoder contextRyan Harrison
During encoding, the code is going to walk through every character in m_msg and determine what values need to be added to m_codewords. The ceiling on the number of characters being added to m_codewords is the length of m_msg, so reserving enought space in advance. This prevents thrash related to incrementing the string and thus resizing in a tight loop. BUG=chromium:846027 Change-Id: Icefd6955933f8068feeeee6243e430f60c50d747 Reviewed-on: https://pdfium-review.googlesource.com/32990 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-05-15Clean up CBC_ASCIIEncoder.Lei Zhang
Get rid of a few more fxbarcode exception codes. Change-Id: Ia9c9cdcef581174e25be8dc2fba181915dc6d729 Reviewed-on: https://pdfium-review.googlesource.com/32471 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-30Optimize yet another piece of barcode codeRyan Harrison
Rolling two iterations over the input into one, and reserving the maximum possibly output size to avoid memory thrash when appending. Under Valgrind this reduces the instruction count by ~200x BUG=chromium:837610 Change-Id: If12a3b98048b41906a4401d4dcc9470b513e28d2 Reviewed-on: https://pdfium-review.googlesource.com/31731 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-04-23Pre-allocate more string buffers in barcode codeRyan Harrison
Another couple of examples where the slow down in the barcode code can be fixed by reserving and thus pre-allocating the buffer that backs the Widestring. Doing += in a tight loop caused reallocation thrashing. BUG=chromium:834630 Change-Id: I48a802225351bcaf992c324732fddf81639b4898 Reviewed-on: https://pdfium-review.googlesource.com/31230 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-04-12Tidy up types in CBC_PDF417HighLevelEncoderRyan Harrison
Follow up to request in https://pdfium-review.googlesource.com/c/pdfium/+/30190 BUG=chromium:802242 Change-Id: I8fddd78d235a195c9782c3f6ced428de965e85eb Reviewed-on: https://pdfium-review.googlesource.com/30250 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-04-11Reserve space to reduce memory operations while encoding barcodeRyan Harrison
In the test case from the bug, the majority of the time is being spent resizing Widestring internal buffers, since += is being called in a tight loop. Since the size of the input being mutated and stored is known, this CL reserves the space before hand to lower thrashing. This substantially improves runtime of this test case locally. BUG=chromium:802242 Change-Id: I5176dabc94634b4d6bc3e9425fe6469a5bf35a41 Reviewed-on: https://pdfium-review.googlesource.com/30190 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-04-10Change CFX_RenderDevice::FillRect() to take FX_RECT by const-ref.Lei Zhang
It currently takes const FX_RECT*, but the pointer is never nullptr. Change-Id: I571e9e8dd04756bc4daa25a61a5af8d1f902914b Reviewed-on: https://pdfium-review.googlesource.com/30052 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-03Re-arrange so inline vectors come last in structs.Tom Sepez
This might make the memory tools more effective in finding OOBs. Change-Id: Id093bb0a88c37954c80d612ac00b5a168e75bdbf Reviewed-on: https://pdfium-review.googlesource.com/29550 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-02-26Shrink some tables and kill dead code in xfa.Tom Sepez
Change-Id: Ic1260417e7d1475dd518655b2ab08f0184955d88 Reviewed-on: https://pdfium-review.googlesource.com/27170 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-02-26Add some more missing consts.chromium/3356Tom Sepez
Get things out of the .data section. Change-Id: I375cf00186a3d5d8d10f5d147bd4b692f5db3683 Reviewed-on: https://pdfium-review.googlesource.com/27130 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-01-30Use unsigned for char widthchromium/3335Nicolas Pena
Bug: 806612 Change-Id: I22bd9046dd37a1b596762c46a6b29a323d6e9fa1 Reviewed-on: https://pdfium-review.googlesource.com/24410 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
2018-01-12Fix some nits in fxbarcode.chromium/3322chromium/3321chromium/3320Lei Zhang
This is a follow-up to comments from https://pdfium-review.googlesource.com/c/pdfium/+/22870 Change-Id: Ide35ea5b27ea12d480d979241801c7676b94fe74 Reviewed-on: https://pdfium-review.googlesource.com/22932 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-01-12Add jumbo build support for fxbarcode.Lei Zhang
BUG=pdfium:964 Change-Id: Ic306a374bc9b710e2ac043eebe43504e5bd75926 Reviewed-on: https://pdfium-review.googlesource.com/22870 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-12-01Get rid of else after break/continue/return.chromium/3284chromium/3283Lei Zhang
Change-Id: I3efc57cd7325d16e3ca8ebdeeaec06012b2c56e3 Reviewed-on: https://pdfium-review.googlesource.com/20110 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-11-29Remove dead CBC_OneDimWriter code.chromium/3281Lei Zhang
Found by GCC. Change-Id: Ia403c21b1906ba6782b5a763c67a19a56de01716 Reviewed-on: https://pdfium-review.googlesource.com/19810 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2017-10-02More define cleanupDan Sinclair
Remove unused defines; Move to .cpp files where possible; Fixup values. Change-Id: I88cd5deb04b14ab8e9f8097a695c3d0b52d64b4c Reviewed-on: https://pdfium-review.googlesource.com/15130 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-09-28Simplify some OS checks to PLATFORM checksDan Sinclair
This CL simplifies the OS == WIN{32|64} checks to be PLATFORM == WINDOWS checks. Change-Id: I1493d316dd457b0228e4ef39db4cf1d2b8abf97d Reviewed-on: https://pdfium-review.googlesource.com/14870 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-09-27Move CFX_Font definition to cfx_font.hDan Sinclair
This CL moves the CFX_Font definition out of fx_font.h and into cfx_font.h to match the cfx_font.cpp implementation. Change-Id: Icc2fc7463fa4b9d0bec925e80b60a638136a83a1 Reviewed-on: https://pdfium-review.googlesource.com/14951 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2017-09-27Remove FX_STRSIZE and replace with size_tRyan Harrison
BUG=pdfium:828 Change-Id: I5c40237433ebabaeabdb43aec9cdf783e41dfe16 Reviewed-on: https://pdfium-review.googlesource.com/13230 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2017-09-27Cleanup FX macrosDan Sinclair
This CL renames the FX_OS defines to have _OS_ in their names and drops the _DESKTOP suffix. The FXM defines have been changed to just FX. Change-Id: Iab172fba541713b5f6d14fb8098baf68e3364c74 Reviewed-on: https://pdfium-review.googlesource.com/14833 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-09-26Remove _FX_IOS_chromium/3225Dan Sinclair
The _FX_IOS_ define is never defined, so it isn't useful to check _FX_OS_ against. Remove. Change-Id: I90b50a1a0dc165073ed223cbfe861b9a227818dd Reviewed-on: https://pdfium-review.googlesource.com/14831 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-09-26Fix checks for FX_WIN64_DESKTOPDan Sinclair
Several of the OS checks were mis-typed as FX_WIN64 instead of FX_WIN64_DESKTOP. This CL updates the defines to check for the correct OS define. Bug: pdfium:906 Change-Id: Ib58a6472d1bc26c34d509edf32ac00b18d852a3b Reviewed-on: https://pdfium-review.googlesource.com/14813 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2017-09-21Move CFX_UnownedPtr to UnownedPtrDan Sinclair
This CL moves CFX_UnownedPtr to UnownedPtr and places in the fxcrt namespace. Bug: pdfium:898 Change-Id: I6d1fa463f365e5cb3aafa8c8a7a5f7eff62ed8e0 Reviewed-on: https://pdfium-review.googlesource.com/14620 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-09-21Rename CFX_RetainPtr to RetainPtrDan Sinclair
This CL renames CFX_RetainPtr to RetainPtr and places in the fxcrt namespace. Bug: pdfium:898 Change-Id: I8798a9f79cb0840d3f037e8d04937cedd742914e Reviewed-on: https://pdfium-review.googlesource.com/14616 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-09-19IWYU: Explicitly include <stdint.h> in some headers.Raphael Kubo da Costa
While Chromium's clang and libc++ implicitly end up including that header, the build can break with other toolchains (e.g. GCC 7 and its libstdc++) because some headers reference types such as int32_t without including the header that defines them. Change-Id: Ibb2aa3d3b432f4b47f1b8635d0196d4f69cb09a0 Reviewed-on: https://pdfium-review.googlesource.com/14270 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2017-09-18Convert string class namesRyan Harrison
Automated using git grep & sed. Replace StringC classes with StringView classes. Remove the CFX_ prefix and put string classes in fxcrt namespace. Change AsStringC() to AsStringView(). Rename tests from TEST(fxcrt, *String*Foo) to TEST(*String*, Foo). Couple of tests needed to have their names regularlized. BUG=pdfium:894 Change-Id: I7ca038685c8d803795f3ed02545124f7a224c83d Reviewed-on: https://pdfium-review.googlesource.com/14151 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2017-09-06Unify checksum calculation of EAN-8 and EAN-13.Henrique Nakashima
The algorithm is the same. Change-Id: Ia5713f6b1602aafac546047b8d398048d6532686 Reviewed-on: https://pdfium-review.googlesource.com/13290 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2017-09-06Add unit tests for UPC-A barcode writer.Henrique Nakashima
Bug: pdfium:882 Change-Id: I609adfa652285fe1702f742a2774ffa566471d5c Reviewed-on: https://pdfium-review.googlesource.com/13270 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2017-09-06Convert FX_STRSIZE int->size_tRyan Harrison
Change the underlying type for FX_STRSIZE to size_t from int. This will make the value unsigned and thus all values in the range of the type will be valid. This allows for the final remove of negative length strings, but also introduces a some casting and functional errors, since many parts of the code base assume that FX_STRSIZE is int or another signed type. This also CL fixes these errors. BUG=pdfium:828 Change-Id: I231dca59e96fc9330cbb099eecbdfc41fcf86f5b Reviewed-on: https://pdfium-review.googlesource.com/11830 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2017-09-05Add unit tests for Codabar barcode writer.chromium/3207Henrique Nakashima
Bug: pdfium:882 Change-Id: Ieb06c4c060307bffa6e4fe20c7ced6be6518adca Reviewed-on: https://pdfium-review.googlesource.com/13190 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2017-09-05Add unit tests for Code 39 barcode writer.Henrique Nakashima
Bug: pdfium:882 Change-Id: Ib73abbbc9499e1adef561d7a0ad15dc4eb51234f Reviewed-on: https://pdfium-review.googlesource.com/13150 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2017-09-05Remove isDevice parameter from barcode Render().Henrique Nakashima
isDevice is currently false in tests and fuzzers and true in real usage. This CL changes it all to true. Change-Id: Idea14795d7f0bb70031e04e5c58e248de72fd39e Reviewed-on: https://pdfium-review.googlesource.com/13130 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-09-01Add unit tests for EAN-8 barcode writer.chromium/3204Henrique Nakashima
Bug: pdfium:882 Change-Id: I900d3c1b0b74523fa9e4497da65c68eb307ea6dc Reviewed-on: https://pdfium-review.googlesource.com/12950 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-09-01Fix EAN-13 checksum and add unit tests.Henrique Nakashima
Parity in EAN-13 is considered counting digits from right to left, starting at 1. Bug: pdfium:882 Change-Id: I3e586499091b8400daf93657eb9878f29d9e6922 Reviewed-on: https://pdfium-review.googlesource.com/12910 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2017-09-01Cleanup usages of Mid(foo, 1), Right(1), and Left(1)chromium/3203Ryan Harrison
Mid(foo, 1) is equivalent to [foo], if all you want is the character. Similarly Left(1) is [0]. It is faster also, since it does not need to create intermediate strings. Right(1) is a touch more tricky, since it requires something like GetLength() ? [GetLength() - 1] : 0;. A new method, Last() has been added to perform this character extraction. Multiple call sites have been updated to use more efficient/simpler syntax. There are a number of call sites that use on these patterns, but based on the surrounding context we actually need/want a string, so they have not been modified. Change-Id: I485a7f9c7b34c9bdacecada610158f996816afdd Reviewed-on: https://pdfium-review.googlesource.com/12890 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
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