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Currently Find() and other methods that return a FX_STRSIZE return -1
to indicate error/failure. This means that there is a lot of magic
numbers and magic checks floating around. The standard library for
similar operations uses a npos constant. This CL implements
FX_STRNPOS, and replaces usages of magic number checking. It also does
some type cleanup along the way where it was obvious that FX_STRSIZE
should be being used.
Removing the magic numbers should make eventually changing FX_STRSIZE
to be unsigned easier in the future.
BUG=pdfium:828
Change-Id: I67e481e44cf2f75a1698afa8fbee4f375a74c490
Reviewed-on: https://pdfium-review.googlesource.com/9651
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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This change also removes some variable shadowing that was going on
here.
BUG=chromium:750013
Change-Id: I7314166af3ecd55ea5e1105afbe171443b1b22ae
Reviewed-on: https://pdfium-review.googlesource.com/9630
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
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Instead of accessing the raw kTextLayoutCodeProperties data.
Change-Id: Ie39cf5c098e1564ae2f18d76b234af42f24db4ca
Reviewed-on: https://pdfium-review.googlesource.com/9451
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>
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Change-Id: Ie4bf8100aca9d22e07406a9479c9ff891c953fe8
Reviewed-on: https://pdfium-review.googlesource.com/9450
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
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The various string/byte classes support Mid(), Left(), and Right() for
extracting substrings. Mid() can handle all possible cases, but Left()
and Right() are useful for common cases and more explicit about what
is going on.
Calls like Mid(offset, length - offset) can be converted to
Right(length - offset). Calls like Mid(0, length) can be converted to
Left(length).
If the substring being extracted does not extend all the way to one of
the edges of the string, then Mid() still needs to be used.
BUG=pdfium:828
Change-Id: I2ec46ad3d71aac0f7b513e103c69cbe8c854cf62
Reviewed-on: https://pdfium-review.googlesource.com/9510
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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Change-Id: I43ec0d4a3b60d51c59ba5a540dfe24803e725089
Reviewed-on: https://pdfium-review.googlesource.com/9170
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
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This support is being removed from CFX_ByteString, CFX_ByteStringC,
CFX_WideString, and CFX_WideStringC. This standardizes all of these
classes to only have one Mid method that takes in 2 params, offset and
count. Count now must be positive. The old behaviour of calculating
the length for the user if -1 is passed in for the count has been
removed. This work is in preperation for converting these classes to
not accept negative lengths anywhere and thus make the underlying size
type unsigned.
BUG=pdfium:828
Change-Id: I5f15e7b7b00b264231817f143e2da88ee6f69e7b
Reviewed-on: https://pdfium-review.googlesource.com/9430
Reviewed-by: (OOO Jul 28 - Aug 8) dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
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Minor nit I had with this code and want to fix.
Bug:
Change-Id: I2494667d580bf982a4359153123d9e8afb75e349
Reviewed-on: https://pdfium-review.googlesource.com/9370
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: (OOO Jul 28 - Aug 8) dsinclair <dsinclair@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
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Bug: pdfium:731
Change-Id: I3b7e4e88d44afcb8590ce4b7e7de7c0eccdc623a
Reviewed-on: https://pdfium-review.googlesource.com/7350
Reviewed-by: (OOO Jul 28 - Aug 8) dsinclair <dsinclair@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
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0 is not actually in the spec for characters and was only included due
quirks in how the lexing code was written. Due to changes in the
lexer, it is no longer needed and a potential source of errors.
Bug:
Change-Id: I6fbba027e40aaa286ed4c89a6c569d26e3d4cd8b
Reviewed-on: https://pdfium-review.googlesource.com/9350
Reviewed-by: (OOO Jul 28 - Aug 8) dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
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Removed 'case 0xf00:' to either be the character being checked or
moved to a IsWhitespaceCharacter() check.
BUG=pdfium:815
Change-Id: I34727a00f6d54ecf8de2f9e4eb785b3c10b6c521
Reviewed-on: https://pdfium-review.googlesource.com/9310
Reviewed-by: (OOO Jul 28 - Aug 8) dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
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This CL rewrites how FMLexer returns errors, instead of having a flag
that gets flipped and needs to be checked, it now returns nullptr for
NextToken() when an error occurs. The Lexer's behaviour has also been
changed to only return nullptr once an error has occurred, instead of
advancing the lexing on further calls.
FMParse now checks the returned value from the lexer instead of
testing the error flag on the parser object. For any operation that
might cause the error state of the parser to change, i.e. consuming a
token, an error check has been added. In the event this check fails
the related function returns nullptr. This will cause the parse to
short circuit and exit.
BUG=pdfium:814
Change-Id: I669012c4732c18d13009be7cd7bf1ae682950904
Reviewed-on: https://pdfium-review.googlesource.com/8950
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: (OOO Jul 28 - Aug 8) dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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This is to aid with debugging, since the getting
things like the type is a pain due to it being a enum.
Bug:
Change-Id: I89bae7103b476d7fd09ba78699367a1a413ee700
Reviewed-on: https://pdfium-review.googlesource.com/9190
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
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The CFGAS_FontMgr is being provided to the CSS style selector in order
to pas it to the RulesCollection. The RulesCollection does not use the
font manager so remove the font manager from the CSS code.
Change-Id: I61a4a5060053615935902cb31fbc12d9856acded
Reviewed-on: https://pdfium-review.googlesource.com/9270
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
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Change-Id: I6cdb439c4bccfb3708fb855d03aa65f220e6ff48
Reviewed-on: https://pdfium-review.googlesource.com/9250
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
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XFA_FM_KeywordToString is no longer used, and there are no plans to
use it in the future, so should be removed.
Bug:
Change-Id: I44652a40f6396b25262f840c42036fb00a14aca1
Reviewed-on: https://pdfium-review.googlesource.com/9210
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
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The TagProvider is only used in CXFA_TextParser. This CL moves the code
to a private inner class and renames to TagProvider.
Change-Id: Idd1926250fc59592cc923fde9ec6f8750cb10abf
Reviewed-on: https://pdfium-review.googlesource.com/9231
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
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Change-Id: Iaa34127aaf616a0a7bdf7ccc8f8f001d34abcca1
Reviewed-on: https://pdfium-review.googlesource.com/7371
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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This CL removes the pattern used in the lexer of passing the lexing
member variables around as args to methods. Instead it uses the fact
that they are member variables in the methods.
This CL also includes renaming of variable and function names to
remove unneeded details or make them more precise.
BUG=pdfium:814
Change-Id: Id4c592338db9ff462835314252d39ab3b4b2b2ab
Reviewed-on: https://pdfium-review.googlesource.com/8850
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
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The existing methods had either very bare passive or in some cases
misleading names, so this CL changes them active names that describe
what they do. This also extracts the IsKeyword method into a helper
function since it is actually static.
BUG=pdfium:816
Change-Id: I47a113bc9ea8d88a77822a4441266ec56e6b4cbc
Reviewed-on: https://pdfium-review.googlesource.com/8730
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
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Throughout the lexer there is use of a pattern where a character is
extracted from the location currently being pointed at in the input
and tests are done on this value. This is uneeded, since normally the
pointer isn't being modified while the character is stored, so the
pointer can be dereferenced directly.
This CL also cleans ups the implementation of string extraction from
the input to be easier to read, since it did depend on the character
being extracted to work. The IsFooCharacter methods are also
changed to take in a character instead of a pointer, since they are
only testing the character value not the pointer.
BUG=pdfium:814
Change-Id: I8eda01e0af59ff1f6c6e97d6fb504856c7a08a24
Reviewed-on: https://pdfium-review.googlesource.com/8690
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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There currently exists a weird split where some files exist in xfa/fxfa
and some files exist in xfa/fxfa/app. This CL removes the app/ folder
and moves all files up to the parent directory.
Change-Id: I00c87851a1ebc5a7a636eb9a17b58ba3f1708a84
Reviewed-on: https://pdfium-review.googlesource.com/8810
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
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This CL moves GetPDFWordString to be a method on CFX_Edit. The
FX_EDIT_ISLATINWORD define is moved into fx_edit.h.
CFWL_Edit::FX_EDIT_ISLATINWORD is renamed to FxEditIsLatinWord to make
less confusing with the define.
Change-Id: I47d12d41447b268894a1d0376ac4b2bdb409e2df
Reviewed-on: https://pdfium-review.googlesource.com/8531
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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Since there is no guarantee of termination if the StringC was
extracted from a snippet of another string. Make it more obvious
that things like
strlen(str.unterminated_c_str())
might be a bad idea.
Change-Id: I7832248ed89ebbddf5c0bcd402aac7d40ec2adc2
Reviewed-on: https://pdfium-review.googlesource.com/8170
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
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PDFium doesn't strip BOMs during parsing, but we should strip BOMs when
retrieving parsed strings in CPDF_NameTree to ensure consistency and
appropriate function behavior. See the bug for more info.
As outlined in Bug=pdfium:593, the solution is to call GetUnicodeText()
instead of GetString(). I added a GetUnicodeTextAt() function in
CPDF_Array, which is symmetrical to GetUnicodeTextFor() in
CPDF_Dictionary.
I then changed the input variable types to CPDF_NameTree functions to
be CFX_WideString instead of CFX_ByteString, and modified all the
calls to them.
I also added a unit test for nametree, which would fail prior to this
change. Nametrees with non-unicode names are already tested by embedder
tests.
Bug=pdfium:820
Change-Id: Id69d7343632f83d1f5180348c0eea290f478183f
Reviewed-on: https://pdfium-review.googlesource.com/8091
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Jane Liu <janeliulwq@google.com>
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This makes the lexer stricter on valid characters for identifiers, and
conform to the grammar in the FormCalc spec. This should remove a
class of inputs that ClusterFuzz is attempting that are breaking later
stages of the transpile.
BUG: chromium:736234, pdfium:783, pdfium:784
Change-Id: I3987d6778a82b71d768fa751035993c0af2577ee
Reviewed-on: https://pdfium-review.googlesource.com/8010
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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These files were originally renamed thinking they'd move with the
colour class up to core/. It was decided that CPWL_Color was a better
core colour class the the xfa colour so these are being renamed back to
XFA based names to make it clear where they live.
Change-Id: Ie89f2306be0609add29bd445e719567e7b439211
Reviewed-on: https://pdfium-review.googlesource.com/7754
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
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This CL renames CFX_Color to CXFA_Color. The class has some XFA specific
things like shadings and patterns in it and doesn't make sense as the
colour base class.
Change-Id: I1d2230b9f03a1017777ce673419926429b769e7c
Reviewed-on: https://pdfium-review.googlesource.com/7752
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
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Change-Id: Ic81df89078241c75ae2da6309b22022ba225100f
Reviewed-on: https://pdfium-review.googlesource.com/7370
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
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Cleanup of code I changed earlier last week, to match the style
recommended in later reviews and make it more readable.
BUG=pdfium:786
Change-Id: I2ff8b980a229718e389ad1a8063bd5059aedb66c
Reviewed-on: https://pdfium-review.googlesource.com/7212
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
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BUG=pdfium:786
Change-Id: I7a852566cdde301ee896c12d9d29043047c31ad4
Reviewed-on: https://pdfium-review.googlesource.com/7211
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
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BUG=pdfium:786
Change-Id: I0779dccb6db0e6ea3933279914153ef7961d9a5b
Reviewed-on: https://pdfium-review.googlesource.com/7152
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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For the external buffer use case, use a CFDE_CSSExtTextBuf instead. With
the split, both text buffer implementations are simpler now. As a
result, it becomes obvious where it never fails. Adjust callers
accordingly.
Change-Id: I7b53d36593172487b8c939e6a55af2437ea4ee5a
Reviewed-on: https://pdfium-review.googlesource.com/6932
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
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BUG=pdfium:786
Change-Id: I84f4012b5225f81df604fcc6e0836ac5d19f1414
Reviewed-on: https://pdfium-review.googlesource.com/7153
Reviewed-by: Nicolás Peña <npm@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
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- Simplify if (cond) return true; return false; pattern.
- Use size_t in CXFA_FFDocView::RunCalculateRecursive().
Change-Id: I1c426556bc927a118cb062999812ab06bbfcfec7
Reviewed-on: https://pdfium-review.googlesource.com/7130
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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The bool returned by Start was not being used and the method was always
called right after the constructor, so it should be in the constructor.
Change-Id: I98abf9f7c11fbe42b3aa15ec5e46731198aa23d5
Reviewed-on: https://pdfium-review.googlesource.com/7151
Commit-Queue: Nicolás Peña <npm@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
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Removing hand rolled hash table and binrary search.
BUG=pdfium:786
Change-Id: Iac18f02c9f560f484b974762474dbb51597d2353
Reviewed-on: https://pdfium-review.googlesource.com/7092
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
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CFX_Matrix::GetInverse is much clearer.
Change-Id: Id10ab1723735332e1a78de853f28415ec3a4d834
Reviewed-on: https://pdfium-review.googlesource.com/7090
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Nicolás Peña <npm@chromium.org>
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Remove handling of arbitrary function calls, and only allow supported
function calls. Issues with the lexer being overly permissive led to
large blobs of javascript being dropped into the output. Specifically
driver code was assuming that anything marked as a function would just
be an identifier that could be inserted into the javascript, but the
lexer marks things like ()()() as a function, which would lead to the
following JS being inserted as an identifier.
This change is intended to be a patch for the specific issue that was
being seen from the fuzzer test, and further work will be needed to
make the lexer more strict.
BUG=724913
TEST=Ran fuzzer test case. Ran unittests,embeddertests,corpustests.
Change-Id: Ib7d9239bf6fece853bea0f4915ee4ad72d3cd290
Reviewed-on: https://pdfium-review.googlesource.com/7032
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
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The new embedder test shows Oneof() works, whereas the corpus test does
not. It turns out the corpus test was bad, and trying to fix it exposed
a different bug. So roll DEPS for the testing corpus anyway to get
improved tests, but keep the suppression for now.
BUG=pdfium:781
Change-Id: I3cc6b9a414384c917f205eff064c5dd2175d09fe
Reviewed-on: https://pdfium-review.googlesource.com/6973
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>
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Change-Id: If6d2cce6a4185c6726df7d6b9d44d74efe0be11d
Reviewed-on: https://pdfium-review.googlesource.com/6931
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
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Change-Id: I8230c2d5e5450ea36ff6d2a4fefc1619a13e9c44
Reviewed-on: https://pdfium-review.googlesource.com/6930
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
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Change-Id: I23fe37139ed06a7e09f6a39ea833a6a984add49e
Reviewed-on: https://pdfium-review.googlesource.com/6913
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
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This is unused except for being a pathway for indirect deps.
Change-Id: I717290235ccbc59429ad24231033382958e2a086
Reviewed-on: https://pdfium-review.googlesource.com/6910
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
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BUG=pdfium:690
Change-Id: I922279e4bdc8b411f47f49798155e8f9118c1396
Reviewed-on: https://pdfium-review.googlesource.com/6552
Commit-Queue: Chris Palmer <palmer@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
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This CL fixes some nits in fpdf_parser_decode, especially avoiding non-const
reference parameters.
Change-Id: Ibb914850afd924bb398f886ac862f7589519ef7e
Reviewed-on: https://pdfium-review.googlesource.com/6750
Commit-Queue: Nicolás Peña <npm@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
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PDFium's vswprintf() is based on the win32 version to be consistent
across platforms. On Windows, %s has different meanings depending on
whether the printf() variant is wide or not.
BUG=chromium:732533
Change-Id: I7437ecd253da1234728c1e0897f02b7f907aada8
Reviewed-on: https://pdfium-review.googlesource.com/6550
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
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This CL adds ExtractCountDigits and ExtractCountDigitsWithOptional to
cleanup the digit extraction code.
Change-Id: I6c3f4b435ec41b429b18cd9af9be46551a7fa391
Reviewed-on: https://pdfium-review.googlesource.com/6391
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>
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This CL updates CFGAS_FormatString to use the FXSYS_DecimalCharToInt
helper instead of doing the conversion itself.
Change-Id: Ia5b0f0c008a815b4cf25e59281357285005a7ab0
Reviewed-on: https://pdfium-review.googlesource.com/6412
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>
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This CL adds a small helper to convert a number to a string with a given
number of leading digits.
Change-Id: I689c0d1ab9d35341f923ac7b72ed5a96bce6b868
Reviewed-on: https://pdfium-review.googlesource.com/6411
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
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