ref-filter: add option to match literal pattern

Since 'ref-filter' only has an option to match path names add an
option for plain fnmatch pattern-matching.

This is to support the pattern matching options which are used in `git
tag -l` and `git branch -l` where we can match patterns like `git tag
-l foo*` which would match all tags which has a "foo*" pattern.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index 40f343b..4e9f6c2 100644 (file)
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -68,6 +68,7 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
        git_config(git_default_config, NULL);
 
        filter.name_patterns = argv;
+       filter.match_as_path = 1;
        filter_refs(&array, &filter, FILTER_REFS_ALL | FILTER_REFS_INCLUDE_BROKEN);
        ref_array_sort(sorting, &array);
 

diff --git a/ref-filter.c b/ref-filter.c
index c039fc8..fd839ac 100644 (file)
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -1161,9 +1161,33 @@ static int commit_contains(struct ref_filter *filter, struct commit *commit)
 
 /*
  * Return 1 if the refname matches one of the patterns, otherwise 0.
+ * A pattern can be a literal prefix (e.g. a refname "refs/heads/master"
+ * matches a pattern "refs/heads/mas") or a wildcard (e.g. the same ref
+ * matches "refs/heads/mas*", too).
+ */
+static int match_pattern(const char **patterns, const char *refname)
+{
+       /*
+        * When no '--format' option is given we need to skip the prefix
+        * for matching refs of tags and branches.
+        */
+       (void)(skip_prefix(refname, "refs/tags/", &refname) ||
+              skip_prefix(refname, "refs/heads/", &refname) ||
+              skip_prefix(refname, "refs/remotes/", &refname) ||
+              skip_prefix(refname, "refs/", &refname));
+
+       for (; *patterns; patterns++) {
+               if (!wildmatch(*patterns, refname, 0, NULL))
+                       return 1;
+       }
+       return 0;
+}
+
+/*
+ * Return 1 if the refname matches one of the patterns, otherwise 0.
  * A pattern can be path prefix (e.g. a refname "refs/heads/master"
- * matches a pattern "refs/heads/") or a wildcard (e.g. the same ref
- * matches "refs/heads/m*",too).
+ * matches a pattern "refs/heads/" but not "refs/heads/m") or a
+ * wildcard (e.g. the same ref matches "refs/heads/m*", too).
  */
 static int match_name_as_path(const char **pattern, const char *refname)
 {
@@ -1184,6 +1208,16 @@ static int match_name_as_path(const char **pattern, const char *refname)
        return 0;
 }
 
+/* Return 1 if the refname matches one of the patterns, otherwise 0. */
+static int filter_pattern_match(struct ref_filter *filter, const char *refname)
+{
+       if (!*filter->name_patterns)
+               return 1; /* No pattern always matches */
+       if (filter->match_as_path)
+               return match_name_as_path(filter->name_patterns, refname);
+       return match_pattern(filter->name_patterns, refname);
+}
+
 /*
  * Given a ref (sha1, refname), check if the ref belongs to the array
  * of sha1s. If the given ref is a tag, check if the given tag points
@@ -1286,7 +1320,7 @@ static int ref_filter_handler(const char *refname, const struct object_id *oid,
        if (!(kind & filter->kind))
                return 0;
 
-       if (*filter->name_patterns && !match_name_as_path(filter->name_patterns, refname))
+       if (!filter_pattern_match(filter, refname))
                return 0;
 
        if (filter->points_at.nr && !match_points_at(&filter->points_at, oid->hash, refname))

diff --git a/ref-filter.h b/ref-filter.h
index ef25b6e..a5cfa5e 100644 (file)
--- a/ref-filter.h
+++ b/ref-filter.h
@@ -59,7 +59,8 @@ struct ref_filter {
        } merge;
        struct commit *merge_commit;
 
-       unsigned int with_commit_tag_algo : 1;
+       unsigned int with_commit_tag_algo : 1,
+               match_as_path : 1;
        unsigned int kind,
                lines;
 };