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2009-03-18MinGW: implement mmapLibravatar Janos Laube1-3/+9
Add USE_WIN32_MMAP which triggers the use of windows' native file memory mapping functionality in git_mmap()/git_munmap() functions. As git functions currently use mmap with MAP_PRIVATE set only, this implementation supports only that mode for now. On Windows, offsets for memory mapped files need to match the allocation granularity. Take this into account when calculating the packed git- windowsize and file offsets. At the moment, the only function which makes use of offsets in conjunction with mmap is use_pack() in sha1-file.c. Git fast-import's code path tries to map a portion of the temporary packfile that exceeds the current filesize, i.e. offset+length is greater than the filesize. The NO_MMAP code worked with that since pread() just reads the file content until EOF and returns gracefully, while MapViewOfFile() aborts the mapping and returns 'Access Denied'. Working around that by determining the filesize and adjusting the length parameter. Signed-off-by: Janos Laube <janos.dev@gmail.com> Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-17Merge branch 'kb/checkout-optim'Libravatar Junio C Hamano1-0/+14
* kb/checkout-optim: Revert "lstat_cache(): print a warning if doing ping-pong between cache types" checkout bugfix: use stat.mtime instead of stat.ctime in two places Makefile: Set compiler switch for USE_NSEC Create USE_ST_TIMESPEC and turn it on for Darwin Not all systems use st_[cm]tim field for ns resolution file timestamp Record ns-timestamps if possible, but do not use it without USE_NSEC write_index(): update index_state->timestamp after flushing to disk verify_uptodate(): add ce_uptodate(ce) test make USE_NSEC work as expected fix compile error when USE_NSEC is defined check_updates(): effective removal of cache entries marked CE_REMOVE lstat_cache(): print a warning if doing ping-pong between cache types show_patch_diff(): remove a call to fstat() write_entry(): use fstat() instead of lstat() when file is open write_entry(): cleanup of some duplicated code create_directories(): remove some memcpy() and strchr() calls unlink_entry(): introduce schedule_dir_for_removal() lstat_cache(): swap func(length, string) into func(string, length) lstat_cache(): generalise longest_match_lstat_cache() lstat_cache(): small cleanup and optimisation
2009-03-08Create USE_ST_TIMESPEC and turn it on for DarwinLibravatar Brian Gernhardt1-0/+5
Not all OSes use st_ctim and st_mtim in their struct stat. In particular, it appears that OS X uses st_*timespec instead. So add a Makefile variable and #define called USE_ST_TIMESPEC to switch the USE_NSEC defines to use st_*timespec. This also turns it on by default for OS X (Darwin) machines. Likely this is a sane default for other BSD kernels as well, but I don't have any to test that assumption on. Signed-off-by: Brian Gernhardt <benji@silverinsanity.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-07Record ns-timestamps if possible, but do not use it without USE_NSECLibravatar Kjetil Barvik1-0/+9
Traditionally, the lack of USE_NSEC meant "do not record nor use the nanosecond resolution part of the file timestamps". To avoid problems on filesystems that lose the ns part when the metadata is flushed to the disk and then later read back in, disabling USE_NSEC has been a good idea in general. If you are on a filesystem without such an issue, it does not hurt to read and store them in the cached stat data in the index entries even if your git is compiled without USE_NSEC. The index left with such a version of git can be read by git compiled with USE_NSEC and it can make use of the nanosecond part to optimize the check to see if the path on the filesystem hsa been modified since we last looked at. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-07cleanup: add isascii()Libravatar René Scharfe1-0/+2
Add a standard definition of isascii() and use it to replace an open coded high-bit test in pretty.c. While we're there, write the ESC char as the more commonly used '\033' instead of as 0x1b to enhance its grepability. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-25Merge branch 'jc/maint-1.6.0-pack-directory'Libravatar Junio C Hamano1-0/+2
* jc/maint-1.6.0-pack-directory: Make sure objects/pack exists before creating a new pack
2009-02-25Make sure objects/pack exists before creating a new packLibravatar Junio C Hamano1-0/+2
In a repository created with git older than f49fb35 (git-init-db: create "pack" subdirectory under objects, 2005-06-27), objects/pack/ directory is not created upon initialization. It was Ok because subdirectories are created as needed inside directories init-db creates, and back then, packfiles were recent invention. After the said commit, new codepaths started relying on the presense of objects/pack/ directory in the repository. This was exacerbated with 8b4eb6b (Do not perform cross-directory renames when creating packs, 2008-09-22) that moved the location temporary pack files are created from objects/ directory to objects/pack/ directory, because moving temporary to the final location was done carefully with lazy leading directory creation. Many packfile related operations in such an old repository can fail mysteriously because of this. This commit introduces two helper functions to make things work better. - odb_mkstemp() is a specialized version of mkstemp() to refactor the code and teach it to create leading directories as needed; - odb_pack_keep() refactors the code to create a ".keep" file while create leading directories as needed. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-17Add is_regex_special()Libravatar René Scharfe1-0/+2
Add is_regex_special(), a character class macro for chars that have a special meaning in regular expressions. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-17Change NUL char handling of isspecial()Libravatar René Scharfe1-2/+2
Replace isspecial() by the new macro is_glob_special(), which is more, well, specialized. The former included the NUL char in its character class, while the letter only included characters that are special to file name globbing. The new name contains underscores because they enhance readability considerably now that it's made up of three words. Renaming the function is necessary to document its changed scope. The call sites of isspecial() are updated to check explicitly for NUL. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-30cygwin: Use native Win32 API for statLibravatar Dmitry Potapov1-0/+1
lstat/stat functions in Cygwin are very slow, because they try to emulate some *nix things that Git does not actually need. This patch adds Win32 specific implementation of these functions for Cygwin. This implementation handles most situation directly but in some rare cases it falls back on the implementation provided for Cygwin. This is necessary for two reasons: - Cygwin has its own file hierarchy, so absolute paths used in Cygwin is not suitable to be used Win32 API. cygwin_conv_to_win32_path can not be used because it automatically dereference Cygwin symbol links, also it causes extra syscall. Fortunately Git rarely use absolute paths, so we always use Cygwin implementation for absolute paths. - Support of symbol links. Cygwin stores symbol links as ordinary using one of two possible formats. Therefore, the fast implementation falls back to Cygwin functions if it detects potential use of symbol links. The speed of this implementation should be the same as mingw_lstat for common cases, but it is considerable slower when the specified file name does not exist. Despite all efforts to make the fast implementation as robust as possible, it may not work well for some very rare situations. I am aware only one situation: use Cygwin mount to bind unrelated paths inside repository together. Therefore, the core.ignoreCygwinFSTricks configuration option is provided, which controls whether native or Cygwin version of stat is used. Signed-off-by: Dmitry Potapov <dpotapov@gmail.com> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-09-29usage.c: remove unused functionsLibravatar Nanako Shiraishi1-3/+0
This removes three functions that are not used anywhere. Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com> Acked-by: Lars Hjemli <hjemli@gmail.com> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-08-28dir.c: Avoid c99 array initializationLibravatar Brandon Casey1-0/+2
The following syntax: char foo[] = { [0] = 1, [7] = 2, [15] = 3 }; is a c99 construct which some compilers do not support even though they support other c99 constructs. This construct can be avoided by folding these 'special' test cases into the sane_ctype array and making use of the related infrastructure. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-19Merge branch 'rs/imap'Libravatar Junio C Hamano1-0/+5
* rs/imap: Documentation: Improve documentation for git-imap-send(1) imap-send.c: more style fixes imap-send.c: style fixes git-imap-send: Support SSL git-imap-send: Allow the program to be run from subdirectories of a git tree
2008-08-18compat: introduce on_disk_bytes()Libravatar Junio C Hamano1-0/+6
Some platforms do not have st_blocks member in "struct stat"; mingw already emulates it by rounding it up to closest 512-byte blocks (even though it could overcount when a file has holes). The reason to use the member is only to figure out how many kilobytes the files occupy on-disk, so give a helper function in git-compat-util.h to compute this value. Signed-off-by: Junio C Hamano <gitster@pobox.com> Acked-by: Johannes Sixt <johannes.sixt@telecom.at>
2008-07-25git-imap-send: Support SSLLibravatar Robert Shearman1-0/+5
Allow SSL to be used when a imaps:// URL is used for the host name. Also, automatically use TLS when not using imaps:// by using the IMAP STARTTLS command, if the server supports it. Tested with Courier and Gimap IMAP servers. Signed-off-by: Robert Shearman <robertshearman@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-15Merge branch 'mv/merge-in-c'Libravatar Junio C Hamano1-0/+6
* mv/merge-in-c: reduce_heads(): protect from duplicate input reduce_heads(): thinkofix Add a new test for git-merge-resolve t6021: add a new test for git-merge-resolve Teach merge.log to "git-merge" again Build in merge Fix t7601-merge-pull-config.sh on AIX git-commit-tree: make it usable from other builtins Add new test case to ensure git-merge prepends the custom merge message Add new test case to ensure git-merge reduces octopus parents when possible Introduce reduce_heads() Introduce get_merge_bases_many() Add new test to ensure git-merge handles more than 25 refs. Introduce get_octopus_merge_bases() in commit.c git-fmt-merge-msg: make it usable from other builtins Move read_cache_unmerged() to read-cache.c Add new test to ensure git-merge handles pull.twohead and pull.octopus Move parse-options's skip_prefix() to git-compat-util.h Move commit_list_count() to commit.c Move split_cmdline() to alias.c Conflicts: Makefile parse-options.c
2008-07-09Provide fallback definitions of PRIu32 and PRIx32Libravatar Johannes Sixt1-0/+8
Since 6e1c23442 we make use of these C99 constructs, but this commit did not provide fallbacks for non-C99 systems. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-02Merge branch 'j6t/mingw'Libravatar Junio C Hamano1-4/+32
* j6t/mingw: (38 commits) compat/pread.c: Add a forward declaration to fix a warning Windows: Fix ntohl() related warnings about printf formatting Windows: TMP and TEMP environment variables specify a temporary directory. Windows: Make 'git help -a' work. Windows: Work around an oddity when a pipe with no reader is written to. Windows: Make the pager work. When installing, be prepared that template_dir may be relative. Windows: Use a relative default template_dir and ETC_GITCONFIG Windows: Compute the fallback for exec_path from the program invocation. Turn builtin_exec_path into a function. Windows: Use a customized struct stat that also has the st_blocks member. Windows: Add a custom implementation for utime(). Windows: Add a new lstat and fstat implementation based on Win32 API. Windows: Implement a custom spawnve(). Windows: Implement wrappers for gethostbyname(), socket(), and connect(). Windows: Work around incompatible sort and find. Windows: Implement asynchronous functions as threads. Windows: Disambiguate DOS style paths from SSH URLs. Windows: A rudimentary poll() emulation. Windows: Implement start_command(). ...
2008-06-30Move parse-options's skip_prefix() to git-compat-util.hLibravatar Miklos Vajna1-0/+6
builtin-remote.c and parse-options.c both have a skip_prefix() function, for the same purpose. Move parse-options's one to git-compat-util.h and let builtin-remote use it as well. Signed-off-by: Miklos Vajna <vmiklos@frugalware.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-06-26compat/pread.c: Add a forward declaration to fix a warningLibravatar Steffen Prohaska1-0/+6
read_in_full()'s is used in compat/pread.c. read_in_full() is declared in cache.h. But we can't include cache.h because too many macros are defined there. Using read_in_full() without including cache.h is dangerous because we wouldn't recognize if its prototyp changed. gcc issues a warning about that. This commit adds a forward declaration to git-compat-util.h. git-compat-util.h is included by compat/pread.c _and_ cache.h. Hence, changes in cache.h would be detected. Signed-off-by: Steffen Prohaska <prohaska@zib.de> Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
2008-06-23Make my_mktime() public and rename it to tm_to_time_t()Libravatar Johannes Sixt1-0/+1
We will use it from the MinGW port's gettimeofday() substitution. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
2008-06-23Windows: Strip ".exe" from the program name.Libravatar Johannes Sixt1-0/+4
Before we can successfully parse a builtin command from the program name we must strip off unneeded parts, that is, the file extension. Furthermore, we must take Windows style path names into account when we parse the program name. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
2008-06-23Windows: Treat Windows style path names.Libravatar Johannes Sixt1-0/+8
GIT's guts work with a forward slash as a path separators. We do not change that. Rather we make sure that only "normalized" paths enter the depths of the machinery. We have to translate backslashes to forward slashes in the prefix and in command line arguments. Fortunately, all of them are passed through functions in setup.c. A macro has_dos_drive_path() is defined that checks whether a path begins with a drive letter+colon combination. This predicate is always false on Unix. Another macro is_dir_sep() abstracts that a backslash is also a directory separator on Windows. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
2008-06-22Shrink the git binary a bit by avoiding unnecessary inline functionsLibravatar Linus Torvalds1-155/+12
So I was looking at the disgusting size of the git binary, and even with the debugging removed, and using -Os instead of -O2, the size of the text section was pretty high. In this day and age I guess almost a megabyte of text isn't really all that surprising, but it still doesn't exactly make me think "lean and mean". With -Os, a surprising amount of text space is wasted on inline functions that end up just being replicated multiple times, and where performance really isn't a valid reason to inline them. In particular, the trivial wrapper functions like "xmalloc()" are used _everywhere_, and making them inline just duplicates the text (and the string we use to 'die()' on failure) unnecessarily. So this just moves them into a "wrapper.c" file, getting rid of a tiny bit of unnecessary bloat. The following numbers are both with "CFLAGS=-Os": Before: [torvalds@woody git]$ size git text data bss dec hex filename 700460 15160 292184 1007804 f60bc git After: [torvalds@woody git]$ size git text data bss dec hex filename 670540 15160 292184 977884 eebdc git so it saves almost 30k of text-space (it actually saves more than that with the default -O2, but I don't think that's necessarily a very relevant number from a "try to shrink git" standpoint). It might conceivably have a performance impact, but none of this should be _that_ performance critical. The real cost is not generally in the wrapper anyway, but in the code it wraps (ie the cost of "xread()" is all in the read itself, not in the trivial wrapping of it). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-06-22Windows: Use the Windows style PATH separator ';'.Libravatar Johannes Sixt1-0/+4
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
2008-06-22Add target architecture MinGW.Libravatar Johannes Sixt1-4/+9
With this change GIT can be compiled and linked using MinGW. Builtins that only read the repository such as the log family and grep already work. Simple stubs are provided for a number of functions that the Windows C runtime does not offer. They will be completed in later patches. However, a fix for the snprintf/vsnprintf replacement is applied here to avoid buffer overflows. Dmitry Kakurin pointed out that access(..., X_OK) would always fails on Vista and suggested the -D__USE_MINGW_ACCESS workaround. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
2008-06-08Port to 12 other Platforms.Libravatar Boyd Lynn Gerber1-1/+1
This patch adds support to compile and run git on 12 additional platforms. The platforms are based on UNIX Systems Labs (USL)/Novell/SYS V code base. The most common are Novell UnixWare 2.X.X, SCO UnixWare 7.X.X, OpenServer 5.0.X, OpenServer 6.0.X, and SCO pre OSR 5 platforms. Looking at the the various platform headers, I find: #if defined(_KERNEL) || !defined(_POSIX_SOURCE) \ && !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) which hides u_short and other typedefs that other header files on these platforms depend on. WIth _XOPEN_SOURCE defined, sources that include system header files that depend on the typedefs such as u_short cannot be compiled on these platforms. __USLC__ indicates UNIX System Labs Corperation (USLC), or a Novell-derived compiler and/or some SysV based OS's. __M_UNIX indicates XENIX/SCO UNIX/OpenServer 5.0.7 and prior releases of the SCO OS's. It is used just like Apple and BSD, both of these shouldn't have _XOPEN_SOURCE defined. This is with suggestions and modifications from Daniel Barkalow, Junio C Hamano, Thomas Harning, and Jeremy Maitin-Shepard. Signed-off-by: Boyd Lynn Gerber <gerberb@zenez.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-08compat-util: avoid macro redefinition warningLibravatar Johannes Sixt1-0/+3
Some systems define fopen as a macro based on compiler settings, and unconditionally redefining it triggers a compilation warning.
2008-04-27Document functions xmemdupz(), xread() and xwrite()Libravatar Heikki Orsila1-0/+16
Signed-off-by: Heikki Orsila <heikki.orsila@iki.fi> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-03-13pack-objects: proper pack time stamping with --max-pack-sizeLibravatar Nicolas Pitre1-0/+1
Runtime pack access is done in the pack file mtime order since recent packs are more likely to contain frequently used objects than old packs. However the --max-pack-size option can produce multiple packs with mtime in the reversed order as newer objects are always written first. Let's modify mtime of later pack files (when any) so they appear older than preceding ones when a repack creates multiple packs. Signed-off-by: Nicolas Pitre <nico@cam.org>
2008-03-08Merge branch 'mr/compat-snprintf'Libravatar Junio C Hamano1-0/+9
* mr/compat-snprintf: Add compat/snprintf.c for systems that return bogus
2008-03-05Add compat/snprintf.c for systems that return bogusLibravatar Michal Rokos1-0/+9
Some systems (namely HPUX and Windows) return -1 when maxsize in snprintf() and in vsnprintf() is reached. So replace snprintf() and vsnprintf() functions with our own ones that return correct value upon overflow. [jc: verified that review comments by J6t have been incorporated, and tightened the check to verify the resulting buffer contents, suggested by Wayne Davison] Signed-off-by: Michal Rokos <michal.rokos@nextsoft.cz> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-03-05Do not use GUID on dir in git init --shared=all on FreeBSDLibravatar Alex Riesen1-0/+6
It does not allow changing the bit to a non-root user. This fixes t1301-shared-repo.sh on the platform. Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-20Merge branch 'bc/fopen'Libravatar Junio C Hamano1-0/+5
* bc/fopen: Add compat/fopen.c which returns NULL on attempt to open directory
2008-02-11Add compat/fopen.c which returns NULL on attempt to open directoryLibravatar Brandon Casey1-0/+5
Some systems do not fail as expected when fread et al. are called on a directory stream. Replace fopen on such systems which will fail when the supplied path is a directory. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-06compat: Add simplified merge sort implementation from glibcLibravatar Brian Downing1-0/+6
qsort in Windows 2000 (and various other C libraries) is a Quicksort with the usual O(n^2) worst case. Unfortunately, sorting Git trees seems to get very close to that worst case quite often: $ /git/gitbad runstatus # On branch master qsort, nmemb = 30842 done, 237838087 comparisons. This patch adds a simplified version of the merge sort that is glibc's qsort(3). As a merge sort, this needs a temporary array equal in size to the array that is to be sorted, but has a worst-case performance of O(n log n). The complexity that was removed is: * Doing direct stores for word-size and -aligned data. * Falling back to quicksort if the allocation required to perform the merge sort would likely push the machine into swap. Even with these simplifications, this seems to outperform the Windows qsort(3) implementation, even in Windows XP (where it is "fixed" and doesn't trigger O(n^2) complexity on trees). [jes: moved into compat/qsort.c, as per Johannes Sixt's suggestion] [bcd: removed gcc-ism, thanks to Edgar Toernig. renamed make variable per Junio's comment.] Signed-off-by: Brian Downing <bdowning@lavos.net> Signed-off-by: Steffen Prohaska <prohaska@zib.de> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-24pre-POSIX.1-2001 systems do not have <sys/select.h>Libravatar Robert Schiele1-0/+2
POSIX.1-2001 has declaration of select(2) in <sys/select.h>, but in the previous version of SUS, it was declared in <sys/time.h> (which is already included in git-compat-util.h). This introduces NO_SYS_SELECT_H macro in the Makefile to be set on older systems, to skip inclusion of <sys/select.h> that does not exist on them. We could check _POSIX_VERSION with 200112L and do this automatically, but earlier it was reported that the approach does not work well on some vintage of HP-UX. Other systems may get _POSIX_VERSION itself wrong. At least for now, this manual configuration is safer. Signed-off-by: Robert Schiele <rschiele@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-03Uninline prefixcmp()Libravatar Junio C Hamano1-9/+2
Now the routine is an open-coded loop that avoids an extra strlen() in the previous implementation, it got a bit too big to be inlined. Uninlining it makes code footprint smaller but the result still retains the avoidance of strlen() cost. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-02Optimize prefixcmp()Libravatar Johannes Schindelin1-1/+5
Certain codepaths (notably "git log --pretty=format...") use prefixcmp() extensively, with very short prefixes. In those cases, calling strlen() is a wasteful operation, so avoid it. Initial patch by Marco Costalba. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-24Merge branch 'js/mingw-fallouts'Libravatar Junio C Hamano1-0/+2
* js/mingw-fallouts: fetch-pack: Prepare for a side-band demultiplexer in a thread. rehabilitate some t5302 tests on 32-bit off_t machines Allow ETC_GITCONFIG to be a relative path. Introduce git_etc_gitconfig() that encapsulates access of ETC_GITCONFIG. Allow a relative builtin template directory. Close files opened by lock_file() before unlinking. builtin run_command: do not exit with -1. Move #include <sys/select.h> and <sys/ioctl.h> to git-compat-util.h. Use is_absolute_path() in sha1_file.c. Skip t3902-quoted.sh if the file system does not support funny names. t5302-pack-index: Skip tests of 64-bit offsets if necessary. t7501-commit.sh: Not all seds understand option -i t5300-pack-object.sh: Split the big verify-pack test into smaller parts.
2007-11-20git-compat-util.h: auto-adjust to compiler support of FLEX_ARRAY a bit betterLibravatar Junio C Hamano1-4/+18
When declaring a structure with a flexible array member, instead of defaulting to the c99 syntax for non-gnu compilers (which burned people with older compilers), default to the traditional and more portable "member[1]; /* more */" syntax. At the same time, other c99 compilers should be able to take advantage of the modern syntax to flexible array members without being gcc. Check __STDC_VERSION__ for that. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-18Merge branch 'ph/diffopts'Libravatar Junio C Hamano1-0/+1
* ph/diffopts: Reorder diff_opt_parse options more logically per topics. Make the diff_options bitfields be an unsigned with explicit masks. Use OPT_BIT in builtin-pack-refs Use OPT_BIT in builtin-for-each-ref Use OPT_SET_INT and OPT_BIT in builtin-branch parse-options new features.
2007-11-14Move #include <sys/select.h> and <sys/ioctl.h> to git-compat-util.h.Libravatar Johannes Sixt1-0/+2
... since all system headers are pulled in via git-compat-util.h Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-12Fix preprocessor logic that determines the availablity of strchrnul().Libravatar Johannes Sixt1-1/+7
Apart from the error in the condition (&& should actually be ||), the construct #if !defined(A) || !A leads to a syntax error in the C preprocessor if A is indeed not defined. Tested-by: David Symonds <dsymonds@gmail.com> Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-11parse-options new features.Libravatar Pierre Habouzit1-0/+1
options flags: ~~~~~~~~~~~~~ PARSE_OPT_NONEG allow the caller to disallow the negated option to exists. option types: ~~~~~~~~~~~~ OPTION_BIT: ORs (or NANDs) a mask. OPTION_SET_INT: force the value to be set to this integer. OPTION_SET_PTR: force the value to be set to this pointer. helper: ~~~~~~ HAS_MULTI_BITS (in git-compat-util.h) is a bit-hack to check if an unsigned integer has more than one bit set, useful to check if conflicting options have been used. Signed-off-by: Pierre Habouzit <madcoder@debian.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-11Simplify strchrnul() compat codeLibravatar Andreas Ericsson1-2/+7
strchrnul() was introduced in glibc in April 1999 and included in glibc-2.1. Checking for that version means the majority of all git users would get to use the optimized version in glibc. Of the remaining few some might get to use a slightly slower version than necessary but probably not slower than what we have today. Unfortunately, __GLIBC_PREREQ() macro was not available in glibc 2.1.1 which was short lived but already supported strchrnul(). Odd minority users of that library needs to live with our compatibility inline version. Rediffed-against-next-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-09Add strchrnul()Libravatar René Scharfe1-0/+5
As suggested by Pierre Habouzit, add strchrnul(). It's a useful GNU extension and can simplify string parser code. There are several places in git that can be converted to strchrnul(); as a trivial example, this patch introduces its usage to builtin-fetch--tool.c. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-10-26revert/cherry-pick: work on merge commits as wellLibravatar Junio C Hamano1-0/+13
Usually you cannot revert a merge because you do not know which side of the merge should be considered the mainline (iow, what change to reverse). With this patch, cherry-pick and revert learn -m (--mainline) option that lets you specify the parent number (starting from 1) of the mainline, so that you can: git revert -m 1 $merge to reverse the changes introduced by the $merge commit relative to its first parent, and: git cherry-pick -m 2 $merge to replay the changes introduced by the $merge commit relative to its second parent. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-10-20Define compat version of mkdtemp for systems lacking itLibravatar Shawn O. Pearce1-0/+5
Solaris 9 doesn't have mkdtemp() so we need to emulate it for the rsync transport implementation. Since Solaris 9 is lacking this function we can also reasonably assume it is not available on Solaris 8 either. The new Makfile definition NO_MKDTEMP can be set to enable the git compat version. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2007-09-18Add xmemdupz() that duplicates a block of memory, and NUL terminates it.Libravatar Pierre Habouzit1-8/+9
A lot of places in git's code use code like: char *res; len = ... find length of an interesting segment in src ...; res = xmalloc(len + 1); memcpy(res, src, len); res[len] = '\0'; return res; A new function xmemdupz() captures the allocation, copy and NUL termination. Existing xstrndup() is reimplemented in terms of this new function. Signed-off-by: Pierre Habouzit <madcoder@debian.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>