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add.c: extract check_path_for_gitlink() from treat_gitlinks() for reuse

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Extract the body of the for loop in treat_gitlinks() into a separate
check_path_for_gitlink() function so that it can be reused elsewhere.
This paves the way for a new check-ignore sub-command.

Also document treat_gitlinks().

Signed-off-by: Adam Spiers <git@adamspiers.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Adam Spiers
2013-01-06 16:58:10 +00:00
committed by Junio C Hamano
parent 4b78d7bccd
commit 9d67b61f73
3 changed files with 38 additions and 18 deletions
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31
pathspec.c
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@ -56,3 +56,34 @@ char *find_pathspecs_matching_against_index(const char **pathspec)
add_pathspec_matches_against_index(pathspec, seen, i);
return seen;
}
/*
* Check the index to see whether path refers to a submodule, or
* something inside a submodule. If the former, returns the path with
* any trailing slash stripped. If the latter, dies with an error
* message.
*/
const char *check_path_for_gitlink(const char *path)
{
int i, path_len = strlen(path);
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = active_cache[i];
if (S_ISGITLINK(ce->ce_mode)) {
int ce_len = ce_namelen(ce);
if (path_len <= ce_len || path[ce_len] != '/' ||
memcmp(ce->name, path, ce_len))
/* path does not refer to this
* submodule or anything inside it */
continue;
if (path_len == ce_len + 1) {
/* path refers to submodule;
* strip trailing slash */
return xstrndup(ce->name, ce_len);
} else {
die (_("Path '%s' is in submodule '%.*s'"),
path, ce_len, ce->name);
}
}
}
return path;
}