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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>
2017-09-01Prepare for converting FX_STRSIZE int->size_tRyan Harrison
When turning on this conversion a number of typing issues and other nits where found in the code base that can be merged in without actually changing the underlying type. Landing these changes before the type change CL, since there is a high likelihood that the type change will need to be rolled back, since it is high risk. BUG=pdfium:828 Change-Id: I587443d9090055963446485a1aacb8772eb5ca64 Reviewed-on: https://pdfium-review.googlesource.com/12810 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2017-09-01Adjust loops in preperation for FX_STRSIZE int->size_tRyan Harrison
Adjust loop conditions and behaviours in preperation for convering the underlying type of FX_STRSIZE to size_t. These changes are not dependent on the type switch occuring, so can be landed before hand. BUG=pdfium:828 Change-Id: I5f950c99c10e5ef0836959e3b1dd2e09f8f5afc0 Reviewed-on: https://pdfium-review.googlesource.com/12750 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2017-08-31Remove fx_basic.hDan Sinclair
This CL removes the fx_basic.h header and fixes up includes as needed. Change-Id: I49af32a8327bdbcda40c50a61ffbd75d06609040 Reviewed-on: https://pdfium-review.googlesource.com/12670 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-08-31Fixing CBC_OnedEAN13Writer checksum.Henrique Nakashima
Reverts a piece of https://pdfium-review.googlesource.com/c/pdfium/+/12210 Bug: chromium:760857 Change-Id: I290ebb7b60a6508fc3e8fba6780c837d395c1c3b Reviewed-on: https://pdfium-review.googlesource.com/12690 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2017-08-30Convert int* references to FX_STRSIZERyan Harrison
Through out the code base there are numerous places where variables are declared using a signed integer type when interacting with the string classes, since they assume that FX_STRSIZE is 'int'. As part of changing the underling type of FX_STRSIZE to be unsigned, these locations are being changed to use FX_STRSIZE. This is necessary as part of converting the type, but has been broken off into a separate CL, since it should be low risk. Some related cleanups that are low risk are included as part of this CL. BUG=pdfium:828 Change-Id: Ifaae54ad195ccde0fe8672f71271d29a6ebd65fd Reviewed-on: https://pdfium-review.googlesource.com/12210 Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2017-08-25Add help IsValid* methods to string classeschromium/3198chromium/3197Ryan Harrison
The various string classes, CFX_ByteString, CFX_ByteStringC, CFX_WideString, and CFX_WideStringC, have many conditionals that are effectively determining if a value is a valid index or length. This CL refactors the logic into one place per class, so it only needs to be changed once if its behaviour needs to change. It also make the some of the methods stricter on the inputs they will accept. BUG=pdfium:828 Change-Id: Iadcdaa34a6d862a2804485770027179c89dc6956 Reviewed-on: https://pdfium-review.googlesource.com/12030 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-08-23Convert string Find methods to return an OptionalRyan Harrison
The Find and ReverseFind methods for WideString, WideStringC, ByteString, and ByteStringC have been converted from returning a raw FX_STRSIZE, to returning Optional<FX_STRSIZE>, so that success/failure can be indicated without using FX_STRNPOS. This allows for removing FX_STRNPOS and by association makes the conversion of FX_STRSIZE to size_t easier, since it forces checking the return value of Find to be explictly done as well as taking the error value out of the range of FX_STRSIZE. New Contains methods have been added for cases where the success or failure is all the call site to Find cared about, and the actual position was ignored. BUG=pdfium:828 Change-Id: Id827e508c8660affa68cc08a13d96121369364b7 Reviewed-on: https://pdfium-review.googlesource.com/11350 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2017-08-22Converted CFX_Matrix::TransformRect() to take in constsJane Liu
Currently, all three of CFX_Matrix::TransformRect() take in rect values and modify them in place. This CL converts them to take in constant values and return the transformed values instead, and fixes all the call sites. Bug=pdfium:874 Change-Id: I9c274df3b14e9d88c100ba0530068e06e8fec32b Reviewed-on: https://pdfium-review.googlesource.com/11550 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Jane Liu <janeliulwq@google.com>
2017-08-15Remove GetAt from string classesRyan Harrison
This method duplicates the behaviour of the const [] operator and doesn't offer any additional safety. Folding them into one implementation. SetAt is retained, since implementing the non-const [] operator to replace SetAt has potential performance concerns. Specifically many non-obvious cases of reading an element using [] will cause a realloc & copy. BUG=pdfium:860 Change-Id: I3ef5e5e5a15376f040256b646eb0d90636e24b67 Reviewed-on: https://pdfium-review.googlesource.com/10870 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2017-08-11Remove potential out of bounds call to GetAt()Ryan Harrison
Since m_pos is passed into GetAt() on the underlying string in getCurrentChar(), the value of it needs to confirmed to be valid after decrementing. Some types were changed to reflect the values being stored. BUG=chromium:752480 Change-Id: Ib6d6f52326defd31785e70a17049a08b64dbe069 Reviewed-on: https://pdfium-review.googlesource.com/10652 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
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