Re: [PATCHv7 5/5] pathspec: allow querying for attributes

[Junio C Hamano <gitster@xxxxxxxxx>]

Junio C Hamano <gitster@xxxxxxxxx> writes:

>> +static int match_attrs(const char *name, int namelen,
>> +		       const struct pathspec_item *item)
>> +{
>> +	char *path;
>> +	int i;
>> +
>> +	path = xmemdupz(name, namelen);
>> +	git_check_attr(path, item->attr_check);
> ...
>> +	}
>> +
>> +	free(path);
>
> Let me see how involved a change would be to allow passing a counted
> string to git_check_attr().

Perhaps the attached is sufficient, and you can avoid copying the
paths in this codepath.

 attr.c | 23 ++++++++++++++---------
 attr.h |  1 +
 2 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/attr.c b/attr.c
index e0f7965..eeb29e6 100644
--- a/attr.c
+++ b/attr.c
@@ -725,20 +725,19 @@ static int macroexpand_one(int nr, int rem)
  * check_all_attr. If num is non-zero, only attributes in check[] are
  * collected. Otherwise all attributes are collected.
  */
-static void collect_some_attrs(const char *path, int num,
+static void collect_some_attrs(const char *path, int pathlen, int num,
 			       struct git_attr_check_elem *check)
 
 {
 	struct attr_stack *stk;
-	int i, pathlen, rem, dirlen;
+	int i, rem, dirlen;
 	const char *cp, *last_slash = NULL;
 	int basename_offset;
 
-	for (cp = path; *cp; cp++) {
+	for (cp = path; cp < path + pathlen; cp++) {
 		if (*cp == '/' && cp[1])
 			last_slash = cp;
 	}
-	pathlen = cp - path;
 	if (last_slash) {
 		basename_offset = last_slash + 1 - path;
 		dirlen = last_slash - path;
@@ -769,12 +768,12 @@ static void collect_some_attrs(const char *path, int num,
 		rem = fill(path, pathlen, basename_offset, stk, rem);
 }
 
-static int git_check_attrs(const char *path, int num,
+static int git_check_attrs(const char *path, int pathlen, int num,
 			   struct git_attr_check_elem *check)
 {
 	int i;
 
-	collect_some_attrs(path, num, check);
+	collect_some_attrs(path, pathlen, num, check);
 
 	for (i = 0; i < num; i++) {
 		const char *value = check_all_attr[check[i].attr->attr_nr].value;
@@ -791,7 +790,7 @@ void git_all_attrs(const char *path, struct git_attr_check *check)
 	int i;
 
 	git_attr_check_clear(check);
-	collect_some_attrs(path, 0, NULL);
+	collect_some_attrs(path, strlen(path), 0, NULL);
 
 	for (i = 0; i < attr_nr; i++) {
 		const char *name = check_all_attr[i].attr->name;
@@ -816,10 +815,16 @@ void git_attr_set_direction(enum git_attr_direction new, struct index_state *ist
 	use_index = istate;
 }
 
-int git_check_attr(const char *path, struct git_attr_check *check)
+int git_check_attr_counted(const char *path, int pathlen,
+			   struct git_attr_check *check)
 {
 	check->finalized = 1;
-	return git_check_attrs(path, check->check_nr, check->check);
+	return git_check_attrs(path, pathlen, check->check_nr, check->check);
+}
+
+int git_check_attr(const char *path, struct git_attr_check *check)
+{
+	return git_check_attr_counted(path, strlen(path), check);
 }
 
 struct git_attr_check *git_attr_check_initl(const char *one, ...)
diff --git a/attr.h b/attr.h
index 51ca36d..4a4ac76 100644
--- a/attr.h
+++ b/attr.h
@@ -38,6 +38,7 @@ struct git_attr_check {
 
 extern struct git_attr_check *git_attr_check_initl(const char *, ...);
 extern int git_check_attr(const char *path, struct git_attr_check *);
+extern int git_check_attr_counted(const char *, int, struct git_attr_check *);
 
 extern struct git_attr_check *git_attr_check_alloc(void);
 extern void git_attr_check_append(struct git_attr_check *, const struct git_attr *);
--
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