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git-apply: work from subdirectory.
When applying a patch to index file, we need to know where GIT_DIR is; use setup_git_directory() to find it out. This also allows us to work from a subdirectory if we wanted to. When git-apply is run from a subdirectory, it applies the given patch only to the files under the current directory and below. Signed-off-by: Junio C Hamano <junkio@cox.net>
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18
apply.c
18
apply.c
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@ -16,6 +16,9 @@
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// --numstat does numeric diffstat, and doesn't actually apply
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// --index-info shows the old and new index info for paths if available.
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//
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static const char *prefix;
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static int prefix_length = -1;
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static int allow_binary_replacement = 0;
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static int check_index = 0;
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static int write_index = 0;
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@ -1706,6 +1709,12 @@ static int use_patch(struct patch *p)
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return 0;
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x = x->next;
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}
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if (0 < prefix_length) {
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int pathlen = strlen(pathname);
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if (pathlen <= prefix_length ||
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memcmp(prefix, pathname, prefix_length))
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return 0;
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}
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return 1;
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}
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@ -1845,6 +1854,15 @@ int main(int argc, char **argv)
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line_termination = 0;
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continue;
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}
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if (check_index && prefix_length < 0) {
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prefix = setup_git_directory();
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prefix_length = prefix ? strlen(prefix) : 0;
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git_config(git_default_config);
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}
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if (0 < prefix_length)
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arg = prefix_filename(prefix, prefix_length, arg);
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fd = open(arg, O_RDONLY);
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if (fd < 0)
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usage(apply_usage);
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