thodg/libgit2/src/oid.c

src/oid.c

Log

Author Commit Date CI Message
Edward Thomson 4853d94c 2020-05-14T10:36:35 global: separate global state from thread-local state Our "global initialization" has accumulated some debris over the years. It was previously responsible for both running the various global initializers (that set up various subsystems) _and_ setting up the "global state", which is actually the thread-local state for things like error reporting. Separate the thread local state out into "threadstate". Use the normal subsystem initialization functions that we already have to set it up. This makes both the global initialization system and the threadstate system simpler to reason about.
Patrick Steinhardt c6184f0c 2020-06-08T21:07:36 tree-wide: do not compile deprecated functions with hard deprecation When compiling libgit2 with -DDEPRECATE_HARD, we add a preprocessor definition `GIT_DEPRECATE_HARD` which causes the "git2/deprecated.h" header to be empty. As a result, no function declarations are made available to callers, but the implementations are still available to link against. This has the problem that function declarations also aren't visible to the implementations, meaning that the symbol's visibility will not be set up correctly. As a result, the resulting library may not expose those deprecated symbols at all on some platforms and thus cause linking errors. Fix the issue by conditionally compiling deprecated functions, only. While it becomes impossible to link against such a library in case one uses deprecated functions, distributors of libgit2 aren't expected to pass -DDEPRECATE_HARD anyway. Instead, users of libgit2 should manually define GIT_DEPRECATE_HARD to hide deprecated functions. Using "real" hard deprecation still makes sense in the context of CI to test we don't use deprecated symbols ourselves and in case a dependant uses libgit2 in a vendored way and knows it won't ever use any of the deprecated symbols anyway.
Edward Thomson 2e8c3b0b 2020-01-18T17:17:46 oid functions: return an int Stop returning a void for functions, future-proofing them to allow them to fail.
Edward Thomson 5d92e547 2019-06-08T17:28:35 oid: `is_zero` instead of `iszero` The only function that is named `issomething` (without underscore) was `git_oid_iszero`. Rename it to `git_oid_is_zero` for consistency with the rest of the library.
Edward Thomson f673e232 2018-12-27T13:47:34 git_error: use new names in internal APIs and usage Move to the `git_error` name in the internal API for error-related functions.
Patrick Steinhardt 0c7f49dd 2017-06-30T13:39:01 Make sure to always include "common.h" first Next to including several files, our "common.h" header also declares various macros which are then used throughout the project. As such, we have to make sure to always include this file first in all implementation files. Otherwise, we might encounter problems or even silent behavioural differences due to macros or defines not being defined as they should be. So in fact, our header and implementation files should make sure to always include "common.h" first. This commit does so by establishing a common include pattern. Header files inside of "src" will now always include "common.h" as its first other file, separated by a newline from all the other includes to make it stand out as special. There are two cases for the implementation files. If they do have a matching header file, they will always include this one first, leading to "common.h" being transitively included as first file. If they do not have a matching header file, they instead include "common.h" as first file themselves. This fixes the outlined problems and will become our standard practice for header and source files inside of the "src/" from now on.
Edward Thomson 909d5494 2016-12-29T12:25:15 giterr_set: consistent error messages Error messages should be sentence fragments, and therefore: 1. Should not begin with a capital letter, 2. Should not conclude with punctuation, and 3. Should not end a sentence and begin a new one
Edward Thomson 3603cb09 2015-02-10T23:13:49 git__*allocarray: safer realloc and malloc Introduce git__reallocarray that checks the product of the number of elements and element size for overflow before allocation. Also introduce git__mallocarray that behaves like calloc, but without the `c`. (It does not zero memory, for those truly worried about every cycle.)
Edward Thomson 392702ee 2015-02-09T23:41:13 allocations: test for overflow of requested size Introduce some helper macros to test integer overflow from arithmetic and set error message appropriately.
Pierre-Olivier Latour ea66215d 2014-10-26T10:29:19 Removed some useless variable assignments
Vicent Marti 4ca0b566 2014-08-18T12:41:06 oid: Export `git_oid_tostr_s` instead of `_allocfmt` The old `allocfmt` is of no use to callers, as they are not able to free the returned buffer. Export a new API that returns a static string that doesn't need to be freed.
Jiri Pospisil 00258cc0 2014-03-06T22:10:17 git_oid_fromstrn: Simplify the implementation and fix memory access issues
Russell Belfer 978a4ed5 2014-02-20T11:00:31 Make git_oid_equal a non-inline API
Brodie Rao 32b7e84e 2014-01-12T23:31:35 oid: handle NULL pointers passed to git_oid_shorten_free() Signed-off-by: Brodie Rao <brodie@sf.io>
Linquize 66566516 2013-09-08T17:15:42 Fix warning
Linquize d45e9480 2013-08-31T18:22:50 oid: git_oid_shorten_add() sets GITERR_INVALID when OID set is full
Vicent Martí 30caf0cf 2013-05-24T01:13:48 Merge pull request #1595 from arrbee/even-more-rename-fixes Even more rename detection fixes
Axel Wagner 52f537e9 2013-05-22T02:04:12 Bugfix: Return NULL in push_leaf, when trie is full os->full was set 1, but the overflowed idx_leaf was still used to index into os->nodes a little later. Returning NULL fixes that.
Russell Belfer 660d59ca 2013-05-17T16:40:00 Add git_oid_nfmt - a flexible OID formatter I frequently want to the the first N digits of an OID formatted as a string and I'd like it to be efficient. This function makes that easy and I could rewrite the OID formatters in terms of it.
Russell Belfer b7f167da 2013-04-29T13:52:12 Make git_oid_cmp public and add git_oid__cmp
Russell Belfer aa8f0101 2013-04-29T08:59:46 Add git_oid_strcmp and use it for git_oid_streq Add a new git_oid_strcmp that compares a string OID with a hex oid for sort order, and then reimplement git_oid_streq using it. This actually should speed up git_oid_streq because it only reads as far into the string as it needs to, whereas previously it would convert the whole string into an OID and then use git_oid_cmp.
Russell Belfer 8564a022 2013-04-29T08:51:24 Fix fragile git_oid_ncmp git_oid_ncmp was making some assumptions about the length of the data - this shifts the check to the top of the loop so it will work more robustly, limits the max, and adds some tests to verify the functionality.
Russell Belfer 0c72248b 2013-04-29T07:34:13 Introduce git_oid_compare, an exported oid cmp
Vicent Marti 13640d1b 2013-03-25T21:39:11 oid: Do not parse OIDs longer than 40
Xavier L 1e7b7523 2013-03-21T12:30:08 git_oid_fromstrn already sets a maximum on the length of the string
Xavier L 0c8efb38 2013-03-21T11:59:01 Added an oid function that accepts nul-terminated strings
Edward Thomson 359fc2d2 2013-01-08T17:07:25 update copyrights
Russell Belfer 1b88faf7 2013-01-03T14:21:25 Fix oid tostr issue with NULL oid I made a small change to the behavior of this code and apparently got it wrong. Sigh.
Russell Belfer 8fe713cc 2012-12-19T15:06:14 Make git_oid_tostr use out buffer for NULL oid Previously a NULL oid was handled like an empty buffer and returned a status empty string. This makes git_oid_tostr() set the output buffer to the empty string instead.
Martin Woodward 826bc4a8 2012-11-23T13:31:22 Remove use of English expletives Remove words such as fuck, crap, shit etc. Remove other potentially offensive words from comments. Tidy up other geopolicital terms in comments.
Ben Straub c9de8611 2012-08-23T12:29:09 Revparse: GIT_EAMBIGUOUS Revparse now returns EAMBIGUOUS if the the spec doesn't match any refs/tags, and is <4 characters.
Vicent Marti e25dda51 2012-08-02T01:38:30 Merge remote-tracking branch 'nulltoken/topic/amd64-compat' into development Conflicts: src/netops.c src/netops.h src/oid.c
Michael Schubert f6b26e77 2012-07-27T10:53:09 git_oid_cmp: inline memcmp by hand to optimize git.git uses an inlined hashcmp function instead of memcmp, since it performes much better when comparing hashes (most hashes compared diverge within the first byte). Measurements and rationale for the curious reader: http://thread.gmane.org/gmane.comp.version-control.git/172286
nulltoken b8457baa 2012-07-24T07:57:58 portability: Improve x86/amd64 compatibility
Vicent Martí 40879fac 2012-05-02T15:59:02 Merge branch 'new-error-handling' into development Conflicts: .travis.yml include/git2/diff.h src/config_file.c src/diff.c src/diff_output.c src/mwindow.c src/path.c tests-clar/clar_helpers.c tests-clar/object/tree/frompath.c tests/t00-core.c tests/t03-objwrite.c tests/t08-tag.c tests/t10-refs.c tests/t12-repo.c tests/t18-status.c tests/test_helpers.c tests/test_main.c
Russell Belfer 44ef8b1b 2012-04-13T13:00:10 Fix warnings on 64-bit windows builds This fixes all the warnings on win64 except those in deps, which come from the regex code.
Vicent Martí 73fe6a8e 2012-03-28T18:59:12 error-handling: Commit (WIP)
Russell Belfer 7c7ff7d1 2012-03-19T16:10:11 Migrate index, oid, and utils to new errors This includes a few cleanups that came up while converting these files. This commit introduces a could new git error classes, including the catchall class: GITERR_INVALID which I'm using as the class for invalid and out of range values which are detected at too low a level of library to use a higher level classification. For example, an overflow error in parsing an integer or a bad letter in parsing an OID string would generate an error in this class.
Authmillenon 5621d809 2012-03-06T17:51:04 Rename git_oid_to_string to git_oid_tostr To conform the naming scheme of git_oid_fromstr we should change the name of git_oid_to_string to git_oid_tostr.
Russell Belfer 74fa4bfa 2012-02-28T16:14:47 Update diff to use iterators This is a major reorganization of the diff code. This changes the diff functions to use the iterators for traversing the content. This allowed a lot of code to be simplified. Also, this moved the functions relating to outputting a diff into a new file (diff_output.c). This includes a number of other changes - adding utility functions, extending iterators, etc. plus more tests for the diff code. This also takes the example diff.c program much further in terms of emulating git-diff command line options.
schu 5e0de328 2012-02-13T17:10:24 Update Copyright header Signed-off-by: schu <schu-github@schulog.org>
nulltoken eb8de747 2011-12-28T20:24:58 util: add git__fromhex()
Vicent Marti 3286c408 2011-10-28T14:51:13 global: Properly use `git__` memory wrappers Ensure that all memory related functions (malloc, calloc, strdup, free, etc) are using their respective `git__` wrappers.
nulltoken 34aff010 2011-10-12T14:06:23 oid: Add git_oid_streq() which checks if an oid and an hex formatted string are equal
J. David Ibáñez 0e058e78 2011-10-02T21:40:57 oid: add missing check to git_oid_fromstrn Signed-off-by: J. David Ibáñez <jdavid.ibp@gmail.com>
J. David Ibáñez b9caa185 2011-09-30T19:50:13 oid: now git_oid_fromstrn checks whether the given string is too short Signed-off-by: J. David Ibáñez <jdavid.ibp@gmail.com>
J. David Ibáñez 6d8d3f19 2011-09-30T19:41:29 oid: optimize git_oid_fromstrn by using memset Signed-off-by: J. David Ibáñez <jdavid.ibp@gmail.com>
J. David Ibáñez e724b058 2011-09-30T19:08:48 oid: make git_oid_fromstrn support hex strings of odd length This fixes issue #433. Signed-off-by: J. David Ibáñez <jdavid.ibp@gmail.com>
Vicent Marti 87d9869f 2011-09-19T03:34:49 Tabify everything There were quite a few places were spaces were being used instead of tabs. Try to catch them all. This should hopefully not break anything. Except for `git blame`. Oh well.
Vicent Marti bb742ede 2011-09-19T01:54:32 Cleanup legal data 1. The license header is technically not valid if it doesn't have a copyright signature. 2. The COPYING file has been updated with the different licenses used in the project. 3. The full GPLv2 header in each file annoys me.
Vicent Marti afeecf4f 2011-07-09T02:10:46 odb: Direct writes are back DIRECT WRITES ARE BACK AND FASTER THAN EVER. The streaming writer to the ODB was an overkill for the smaller objects like Commit and Tags; most of the streaming logic was taking too long. This commit makes Commits, Tags and Trees to be built-up in memory, and then written to disk in 2 pushes (header + data), instead of streaming everything. This is *always* faster, even for big files (since the git_filebuf class still does streaming writes when the memory cache overflows). This is also a gazillion lines of code smaller, because we don't have to precompute the final size of the object before starting the stream (this was kind of defeating the point of streaming, anyway). Blobs are still written with full streaming instead of loading them in memory, since this is still the fastest way. A new `git_buf` class has been added. It's missing some features, but it'll get there.
Vicent Marti 06c43821 2011-07-09T02:37:16 Remove unused methods The direct-writes commit left some (slow) internals methods that were no longer needed. These have been removed. Also, the Reflog code was using the old `git_signature__write`, so it has been rewritten to use a normal buffer and the new `writebuf` signature writer. It's now slightly simpler and faster.
Vicent Marti f0ab9fda 2011-07-08T18:22:44 index: Return `GIT_ENOTFOUND` when an entry cannot be opened
Kirill A. Shutemov 932d1baf 2011-06-30T19:52:34 cleanup: remove trailing spaces Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Vicent Marti d5afc039 2011-06-28T19:15:48 Remove redundant methods from the API A bunch of redundant methods have been removed from the external API. - All the reference/tag creation methods with `_f` are gone. The force flag is now passed as an argument to the normal create methods. - All the different commit creation methods are gone; commit creation now always requires a `git_commit` pointer for parents and a `git_tree` pointer for tree, to ensure that corrupted commits cannot be generated. - All the different tag creation methods are gone; tag creation now always requires a `git_object` pointer to ensure that tags are not created to inexisting objects.
Vicent Marti f1d01851 2011-06-16T02:48:48 oid: Uniformize ncmp methods Drop redundant methods. The ncmp method is now public
Vicent Marti fa48608e 2011-06-16T02:36:21 oid: Rename methods Yeah. Finally. Fuck the old names, this ain't POSIX and they don't make any sense at all.
Scott Chacon 737406b7 2011-06-14T09:31:19 fix gid_ misspelling
Marc Pegon c09093cc 2011-06-06T10:55:36 Renamed git_oid_match to git_oid_ncmp. As suggested by carlosmn, git_oid_ncmp would probably be a better name than git_oid_match, for it does the same as git_oid_cmp but only up to a certain amount of hex digits.
Marc Pegon da03c9f3 2011-05-29T11:45:34 Changed return value of git_oid_match to be consistent with the other compare methods (0 means oids match). Added method to compare prefixes of hex formatted oids.
Marc Pegon 53c0bd81 2011-05-27T22:37:10 Added error for ambiguous oid prefixes. Added methods to compare the first nth hexadecimal characters (i.e. packets of 4 bits) of OIDs.
Jakob Pfender bea54842 2011-05-19T13:50:46 oid.c: Move to new error handling mechanism
Vicent Marti 720d5472 2011-04-02T12:42:04 Change `parse` methods to const buffer Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 72a3fe42 2011-03-18T19:38:49 I broke your bindings Hey. Apologies in advance -- I broke your bindings. This is a major commit that includes a long-overdue redesign of the whole object-database structure. This is expected to be the last major external API redesign of the library until the first non-alpha release. Please get your bindings up to date with these changes. They will be included in the next minor release. Sorry again! Major features include: - Real caching and refcounting on parsed objects - Real caching and refcounting on objects read from the ODB - Streaming writes & reads from the ODB - Single-method writes for all object types - The external API is now partially thread-safe The speed increases are significant in all aspects, specially when reading an object several times from the ODB (revwalking) and when writing big objects to the ODB. Here's a full changelog for the external API: blob.h ------ - Remove `git_blob_new` - Remove `git_blob_set_rawcontent` - Remove `git_blob_set_rawcontent_fromfile` - Rename `git_blob_writefile` -> `git_blob_create_fromfile` - Change `git_blob_create_fromfile`: The `path` argument is now relative to the repository's working dir - Add `git_blob_create_frombuffer` commit.h -------- - Remove `git_commit_new` - Remove `git_commit_add_parent` - Remove `git_commit_set_message` - Remove `git_commit_set_committer` - Remove `git_commit_set_author` - Remove `git_commit_set_tree` - Add `git_commit_create` - Add `git_commit_create_v` - Add `git_commit_create_o` - Add `git_commit_create_ov` tag.h ----- - Remove `git_tag_new` - Remove `git_tag_set_target` - Remove `git_tag_set_name` - Remove `git_tag_set_tagger` - Remove `git_tag_set_message` - Add `git_tag_create` - Add `git_tag_create_o` tree.h ------ - Change `git_tree_entry_2object`: New signature is `(git_object **object_out, git_repository *repo, git_tree_entry *entry)` - Remove `git_tree_new` - Remove `git_tree_add_entry` - Remove `git_tree_remove_entry_byindex` - Remove `git_tree_remove_entry_byname` - Remove `git_tree_clearentries` - Remove `git_tree_entry_set_id` - Remove `git_tree_entry_set_name` - Remove `git_tree_entry_set_attributes` object.h ------------ - Remove `git_object_new - Remove `git_object_write` - Change `git_object_close`: This method is now *mandatory*. Not closing an object causes a memory leak. odb.h ----- - Remove type `git_rawobj` - Remove `git_rawobj_close` - Rename `git_rawobj_hash` -> `git_odb_hash` - Change `git_odb_hash`: New signature is `(git_oid *id, const void *data, size_t len, git_otype type)` - Add type `git_odb_object` - Add `git_odb_object_close` - Change `git_odb_read`: New signature is `(git_odb_object **out, git_odb *db, const git_oid *id)` - Change `git_odb_read_header`: New signature is `(size_t *len_p, git_otype *type_p, git_odb *db, const git_oid *id)` - Remove `git_odb_write` - Add `git_odb_open_wstream` - Add `git_odb_open_rstream` odb_backend.h ------------- - Change type `git_odb_backend`: New internal signatures are as follows int (* read)(void **, size_t *, git_otype *, struct git_odb_backend *, const git_oid *) int (* read_header)(size_t *, git_otype *, struct git_odb_backend *, const git_oid *) int (* writestream)(struct git_odb_stream **, struct git_odb_backend *, size_t, git_otype) int (* readstream)( struct git_odb_stream **, struct git_odb_backend *, const git_oid *) - Add type `git_odb_stream` - Add enum `git_odb_streammode` Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 26022f07 2011-03-05T23:54:49 Add `git_oid_shorten` (unique OID minimzer) Set of methods to find the minimal-length to uniquely identify every OID in a list. Useful for GUI applications, commit logs and so on. Includes stress test. Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 86627121 2011-03-06T00:03:31 Fix type-conversion warning in MSVC Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti d6b5f5cc 2011-03-05T23:54:49 Add `git_oid_shorten` Set of methods to find the minimal-length to uniquely identify every OID in a list. Includes stress test. Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti 44908fe7 2010-12-06T23:03:16 Change the library include file Libgit2 is now officially include as #include "<git2.h>" or indidividual files may be included as #include <git2/index.h> Signed-off-by: Vicent Marti <tanoku@gmail.com>
Vicent Marti d12299fe 2010-12-03T22:22:10 Change include structure for the project The maze with include dependencies has been fixed. There is now a global include: #include <git.h> The git_odb_backend API has been exposed. Signed-off-by: Vicent Marti <tanoku@gmail.com>
nulltoken 6f02c3ba 2010-12-05T20:18:56 Small source code readability improvements. Replaced magic number "0" with GIT_SUCCESS constant wherever it made sense.
Vicent Marti 58519018 2010-10-28T02:07:18 Fix internal memory management on the library String mememory is now managed in a much more sane manner. Fixes include: - git_person email and name is no longer limited to 64 characters - git_tree_entry filename is no longer limited to 255 characters - raw objects are properly opened & closed the minimum amount of times required for parsing - unit tests no longer leak - removed 5 other misc memory leaks as reported by Valgrind - tree writeback no longer segfaults on rare ocassions The git_person struct is no longer public. It is now managed by the library, and getter methods are in place to access its internal attributes. Signed-off-by: Vicent Marti <tanoku@gmail.com>
Ramsay Jones 552e23ba 2010-06-02T19:16:28 Fix a bug in the git_oid_to_string() function When git_oid_to_string() was passed a buffer size larger than GIT_OID_HEXSZ+1, the function placed the c-string NUL char at the wrong position. Fix the code to place the NUL at the end of the (possibly truncated) oid string. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 0ef9d2aa 2010-01-03T22:56:54 Fix some "signed v unsigned comparison" warnings with -Wextra Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 960ca1d7 2009-08-28T21:22:46 Add the git_oid_to_string() utility function Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Shawn O. Pearce 64a47c01 2008-12-30T23:21:36 Wrap malloc and friends and report out of memory as GIT_ENOMEM We now forbid direct use of malloc, strdup or calloc within the library and instead use wrapper functions git__malloc, etc. to invoke the underlying library malloc and set git_errno to a no memory error code if the allocation fails. In the future once we have pack objects in memory we are likely to enhance these routines with garbage collection logic to purge cached pack data when allocations fail. Because the size of the function will grow somewhat large, we don't want to mark them for inline as gcc tends to aggressively inline, creating larger than expected executables. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Julio Espinoza-Sokal 213e720c 2008-12-20T20:47:41 Change usages of static inline to GIT_INLINE Signed-off-by: Julio Espinoza-Sokal <julioes@gmail.com> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones b3be0fc7 2008-12-03T23:54:47 Fix an "implicit function definition" warning on cygwin In particular, the warning relates to malloc(), which is declared in <stdlib.h>. This header is now included, indirectly, via the "common.h" header. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce af795e49 2008-12-02T09:56:23 Add routines to convert git_oid to hex strings [sp: Credit for some of this implementation goes to Pieter, I started off a patch he proposed for libgit2 but reworked enough of it that I don't want to blame him for any bugs.] Suggested-by: Pieter de Bie <pdebie@ai.rug.nl> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce b7c891c6 2008-11-03T17:31:16 Add git_oid_cpy, git_oid_cmp as inline functions These are easily built off the standard C library functions memcpy and memcmp. By marking these inline we stand a good chance of the C compiler replacing the entire thing with tight machine code, because many compilers will actually inline a memcmp or memcpy when the 3rd argument (the size) is a constant value. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce b3a2f90e 2008-11-03T18:00:49 Enable warnings by default and fix warning in oid.c Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 50298f44 2008-11-01T15:55:01 Switch the license from BSD to GPL+libgcc exception Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce d1ea30c3 2008-11-01T15:42:23 Move include files to include/git/, drop git_ prefix from file names Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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