path: root/sh-i18n--envsubst.c
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2019-06-13cleanup: fix possible overflow errors in binary search, part 2René Scharfe
Calculating the sum of two array indexes to find the midpoint between them can overflow, i.e. code like this is unsafe for big arrays: mid = (first + last) >> 1; Make sure the intermediate value stays within the boundaries instead, like this: mid = first + ((last - first) >> 1); The loop condition of the binary search makes sure that 'last' is always greater than 'first', so this is safe as long as 'first' is not negative. And that can be verified easily using the pre-context of each change, except for name-hash.c, so add an assertion to that effect there. The unsafe calculations were found with: git grep '(.*+.*) *>> *1' This is a continuation of 19716b21a4 (cleanup: fix possible overflow errors in binary search, 2017-10-08). Signed-off-by: Rene Scharfe <> Signed-off-by: Junio C Hamano <>
2019-02-22trace2: create new combined trace facilityJeff Hostetler
Create a new unified tracing facility for git. The eventual intent is to replace the current trace_printf* and trace_performance* routines with a unified set of git_trace2* routines. In addition to the usual printf-style API, trace2 provides higer-level event verbs with fixed-fields allowing structured data to be written. This makes post-processing and analysis easier for external tools. Trace2 defines 3 output targets. These are set using the environment variables "GIT_TR2", "GIT_TR2_PERF", and "GIT_TR2_EVENT". These may be set to "1" or to an absolute pathname (just like the current GIT_TRACE). * GIT_TR2 is intended to be a replacement for GIT_TRACE and logs command summary data. * GIT_TR2_PERF is intended as a replacement for GIT_TRACE_PERFORMANCE. It extends the output with columns for the command process, thread, repo, absolute and relative elapsed times. It reports events for child process start/stop, thread start/stop, and per-thread function nesting. * GIT_TR2_EVENT is a new structured format. It writes event data as a series of JSON records. Calls to trace2 functions log to any of the 3 output targets enabled without the need to call different trace_printf* or trace_performance* routines. Signed-off-by: Jeff Hostetler <> Signed-off-by: Junio C Hamano <>
2017-11-09Replace Free Software Foundation address in license noticesTodd Zullinger
The mailing address for the FSF has changed over the years. Rather than updating the address across all files, refer readers to, as the GNU GPL documentation now suggests for license notices. The mailing address is retained in the full license files (COPYING and LGPL-2.1). The old address is still present in t/diff-lib/COPYING. This is intentional, as the file is used in tests and the contents are not expected to change. Signed-off-by: Todd Zullinger <> Signed-off-by: Junio C Hamano <>
2016-09-29remove unnecessary check before QSORTRené Scharfe
Add a semantic patch for removing checks similar to the one that QSORT already does internally and apply it to the code base. Signed-off-by: Rene Scharfe <> Signed-off-by: Junio C Hamano <>
2016-09-29use QSORTRené Scharfe
Apply the semantic patch contrib/coccinelle/qsort.cocci to the code base, replacing calls of qsort(3) with QSORT. The resulting code is shorter and supports empty arrays with NULL pointers. Signed-off-by: Rene Scharfe <> Signed-off-by: Junio C Hamano <>
2016-07-01add an extra level of indirection to main()Jeff King
There are certain startup tasks that we expect every git process to do. In some cases this is just to improve the quality of the program (e.g., setting up gettext()). In others it is a requirement for using certain functions in libgit.a (e.g., system_path() expects that you have called git_extract_argv0_path()). Most commands are builtins and are covered by the git.c version of main(). However, there are still a few external commands that use their own main(). Each of these has to remember to include the correct startup sequence, and we are not always consistent. Rather than just fix the inconsistencies, let's make this harder to get wrong by providing a common main() that can run this standard startup. We basically have two options to do this: - the compat/mingw.h file already does something like this by adding a #define that replaces the definition of main with a wrapper that calls mingw_startup(). The upside is that the code in each program doesn't need to be changed at all; it's rewritten on the fly by the preprocessor. The downside is that it may make debugging of the startup sequence a bit more confusing, as the preprocessor is quietly inserting new code. - the builtin functions are all of the form cmd_foo(), and git.c's main() calls them. This is much more explicit, which may make things more obvious to somebody reading the code. It's also more flexible (because of course we have to figure out _which_ cmd_foo() to call). The downside is that each of the builtins must define cmd_foo(), instead of just main(). This patch chooses the latter option, preferring the more explicit approach, even though it is more invasive. We introduce a new file common-main.c, with the "real" main. It expects to call cmd_main() from whatever other objects it is linked against. We link common-main.o against anything that links against libgit.a, since we know that such programs will need to do this setup. Note that common-main.o can't actually go inside libgit.a, as the linker would not pick up its main() function automatically (it has no callers). The rest of the patch is just adjusting all of the various external programs (mostly in t/helper) to use cmd_main(). I've provided a global declaration for cmd_main(), which means that all of the programs also need to match its signature. In particular, many functions need to switch to "const char **" instead of "char **" for argv. This effect ripples out to a few other variables and functions, as well. This makes the patch even more invasive, but the end result is much better. We should be treating argv strings as const anyway, and now all programs conform to the same signature (which also matches the way builtins are defined). Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2014-09-18use REALLOC_ARRAY for changing the allocation size of arraysRené Scharfe
Signed-off-by: Rene Scharfe <> Signed-off-by: Junio C Hamano <>
2014-07-21use xmemdupz() to allocate copies of strings given by start and lengthRené Scharfe
Use xmemdupz() to allocate the memory, copy the data and make sure to NUL-terminate the result, all in one step. The resulting code is shorter, doesn't contain the constants 1 and '\0', and avoids duplicating function parameters. For blame, the last copied byte (o->file.ptr[o->file.size]) is always set to NUL by fake_working_tree_commit() or read_sha1_file(), so no information is lost by the conversion to using xmemdupz(). Signed-off-by: Rene Scharfe <> Signed-off-by: Junio C Hamano <>
2014-03-12sh-i18n--envsubst: retire unused string_list_member()Eric Sunshine
This static function has no callers, nor has it had any since its introduction in ba67aaf2d05d (git-sh-i18n--envsubst: our own envsubst(1) for eval_gettext(), 2011-05-14). Remove it. Signed-off-by: Eric Sunshine <> Signed-off-by: Junio C Hamano <>
2011-06-30Merge branch 'js/i18n-windows'Junio C Hamano
* js/i18n-windows: Windows: teach getenv to do a case-sensitive search mingw.c: move definition of mingw_getenv down sh-i18n--envsubst: do not crash when no arguments are given
2011-06-17Merge branch 'ab/i18n-scripts-basic'Junio C Hamano
* ab/i18n-scripts-basic: sh-i18n--envsubst.c: do not #include getopt.h
2011-06-17sh-i18n--envsubst.c: do not #include getopt.hBrandon Casey
The getopt.h header file is not used. It's inclusion is left over from the original version of this source. Additionally, getopt.h does not exist on all platforms (SunOS 5.7) and will cause a compilation failure. So, let's remove it. Signed-off-by: Brandon Casey <> Signed-off-by: Junio C Hamano <>
2011-06-06sh-i18n--envsubst: do not crash when no arguments are givenJohannes Sixt
Signed-off-by: Johannes Sixt <> Signed-off-by: Junio C Hamano <>
2011-05-25sh-18n: quell "unused variable" warningMichael J Gruber
show_variables is set but never used. Comment it out rather than remove it so that the relation with upstream remains clear. Signed-off-by: Michael J Gruber <> Signed-off-by: Junio C Hamano <>
2011-05-15git-sh-i18n--envsubst: our own envsubst(1) for eval_gettext()Ævar Arnfjörð Bjarmason
Add a git-sh-i18n--envsubst program which is a stripped-down version of the GNU envsubst(1) program that comes with GNU gettext for use in the eval_gettext() fallback. We need a C helper program because implementing eval_gettext() purely in shell turned out to be unworkable. Digging through the Git mailing list archives will reveal two shell implementations of eval_gettext that are almost good enough, but fail on an edge case which is tested for in the tests which are part of this patch. These are the modifications I made to envsubst.c as I turned it into sh-i18n--envsubst.c: * Added our git-compat-util.h header for xrealloc() and friends. * Removed inclusion of gettext-specific headers. * Removed most of main() and replaced it with my own. The modified version only does option parsing for --variables. That's all it needs. * Modified error() invocations to use our error() instead of error(3). * Replaced the gettext XNMALLOC(n, size) macro with just xmalloc(n). Since XNMALLOC() only allocated char's. * Removed the string_list_destroy function. It's redundant (also in the upstream code). * Replaced the use of stdbool.h (a C99 header) by doing the following replacements on the code: * s/bool/unsigned short int/g * s/true/1/g * s/false/0/g Reported-by: Johannes Sixt <> Signed-off-by: Ævar Arnfjörð Bjarmason <> Signed-off-by: Junio C Hamano <>