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add example for diff with --numstat

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This commit is contained in:
rocky-luo 2014-02-08 20:10:19 +08:00
parent f1590a18b0
commit 4f5a3f400b
1 changed files with 38 additions and 8 deletions
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32
examples/diff.c
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@ -39,6 +39,7 @@ struct opts {
git_diff_find_options findopts; git_diff_find_options findopts;
int color; int color;
int cached; int cached;
int numstat;
git_diff_format_t format; git_diff_format_t format;
const char *treeish1; const char *treeish1;
const char *treeish2; const char *treeish2;
@ -49,6 +50,7 @@ struct opts {
static void parse_opts(struct opts *o, int argc, char *argv[]); static void parse_opts(struct opts *o, int argc, char *argv[]);
static int color_printer( static int color_printer(
const git_diff_delta*, const git_diff_hunk*, const git_diff_line*, void*); const git_diff_delta*, const git_diff_hunk*, const git_diff_line*, void*);
static void diff_print_numstat(git_diff *diff);
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
@ -57,7 +59,7 @@ int main(int argc, char *argv[])
git_diff *diff; git_diff *diff;
struct opts o = { struct opts o = {
GIT_DIFF_OPTIONS_INIT, GIT_DIFF_FIND_OPTIONS_INIT, GIT_DIFF_OPTIONS_INIT, GIT_DIFF_FIND_OPTIONS_INIT,
-1, 0, GIT_DIFF_FORMAT_PATCH, NULL, NULL, "." -1, 0, 0, GIT_DIFF_FORMAT_PATCH, NULL, NULL, "."
}; };
git_threads_init(); git_threads_init();
@ -117,6 +119,9 @@ int main(int argc, char *argv[])
/** Generate simple output using libgit2 display helper. */ /** Generate simple output using libgit2 display helper. */
if (o.numstat == 1)
diff_print_numstat(diff);
else {
if (o.color >= 0) if (o.color >= 0)
fputs(colors[0], stdout); fputs(colors[0], stdout);
@ -126,6 +131,7 @@ int main(int argc, char *argv[])
if (o.color >= 0) if (o.color >= 0)
fputs(colors[0], stdout); fputs(colors[0], stdout);
}
/** Cleanup before exiting. */ /** Cleanup before exiting. */
@ -228,6 +234,8 @@ static void parse_opts(struct opts *o, int argc, char *argv[])
o->diffopts.flags |= GIT_DIFF_INCLUDE_IGNORED; o->diffopts.flags |= GIT_DIFF_INCLUDE_IGNORED;
else if (!strcmp(a, "--untracked")) else if (!strcmp(a, "--untracked"))
o->diffopts.flags |= GIT_DIFF_INCLUDE_UNTRACKED; o->diffopts.flags |= GIT_DIFF_INCLUDE_UNTRACKED;
else if (!strcmp(a, "--numstat"))
o->numstat = 1;
else if (match_uint16_arg( else if (match_uint16_arg(
&o->findopts.rename_threshold, &args, "-M") || &o->findopts.rename_threshold, &args, "-M") ||
match_uint16_arg( match_uint16_arg(
@ -255,3 +263,25 @@ static void parse_opts(struct opts *o, int argc, char *argv[])
usage("Unknown command line argument", a); usage("Unknown command line argument", a);
} }
} }
/** Display diff output with "--numstat".*/
static void diff_print_numstat(git_diff *diff)
{
git_patch *out;
const git_diff_delta *delta;
size_t i;
size_t ndeltas;
size_t nadditions, ndeletions;
ndeltas = git_diff_num_deltas(diff);
for (i = 0; i < ndeltas; i++){
check_lg2(
git_patch_from_diff(&out, diff, i),
"generating patch from diff", NULL);
check_lg2(
git_patch_line_stats(NULL, &nadditions, &ndeletions, out),
"generating the number of additions and deletions", NULL);
delta = git_patch_get_delta(out);
printf("%u %u %s\n", nadditions, ndeletions, delta->new_file.path);
}
git_patch_free(out);
}