[PATCH 04/21] Export parse_pathspec() and convert some get_pathspec() calls

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

These call sites follow the pattern:

   paths = get_pathspec(prefix, argv);
   init_pathspec(&pathspec, paths);

which can be converted into a single parse_pathspec() call.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 builtin/grep.c         | 4 +---
 builtin/ls-tree.c      | 2 +-
 builtin/update-index.c | 3 +--
 cache.h                | 6 ++++++
 revision.c             | 4 ++--
 setup.c                | 6 +++---
 6 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/builtin/grep.c b/builtin/grep.c
index 0e1b6c8..705f9ff 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -630,7 +630,6 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
 	const char *show_in_pager = NULL, *default_pager = "dummy";
 	struct grep_opt opt;
 	struct object_array list = OBJECT_ARRAY_INIT;
-	const char **paths = NULL;
 	struct pathspec pathspec;
 	struct string_list path_list = STRING_LIST_INIT_NODUP;
 	int i;
@@ -857,8 +856,7 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
 			verify_filename(prefix, argv[j], j == i);
 	}
 
-	paths = get_pathspec(prefix, argv + i);
-	init_pathspec(&pathspec, paths);
+	parse_pathspec(&pathspec, PATHSPEC_FROMTOP, 0, prefix, argv + i);
 	pathspec.max_depth = opt.max_depth;
 	pathspec.recursive = 1;
 
diff --git a/builtin/ls-tree.c b/builtin/ls-tree.c
index fb76e38..a78ba53 100644
--- a/builtin/ls-tree.c
+++ b/builtin/ls-tree.c
@@ -166,7 +166,7 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
 	if (get_sha1(argv[0], sha1))
 		die("Not a valid object name %s", argv[0]);
 
-	init_pathspec(&pathspec, get_pathspec(prefix, argv + 1));
+	parse_pathspec(&pathspec, PATHSPEC_FROMTOP, 0, prefix, argv + 1);
 	for (i = 0; i < pathspec.nr; i++)
 		pathspec.items[i].nowildcard_len = pathspec.items[i].len;
 	pathspec.has_wildcard = 0;
diff --git a/builtin/update-index.c b/builtin/update-index.c
index ada1dff..6728e59 100644
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -546,10 +546,9 @@ static int do_reupdate(int ac, const char **av,
 	 */
 	int pos;
 	int has_head = 1;
-	const char **paths = get_pathspec(prefix, av + 1);
 	struct pathspec pathspec;
 
-	init_pathspec(&pathspec, paths);
+	parse_pathspec(&pathspec, PATHSPEC_FROMTOP, 0, prefix, av + 1);
 
 	if (read_ref("HEAD", head_sha1))
 		/* If there is no HEAD, that means it is an initial
diff --git a/cache.h b/cache.h
index 9304d91..e52365d 100644
--- a/cache.h
+++ b/cache.h
@@ -473,6 +473,9 @@ extern int index_name_is_other(const struct index_state *, const char *, int);
 extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
 extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
 
+/* Pathspec magic */
+#define PATHSPEC_FROMTOP    (1<<0)
+
 struct pathspec {
 	const char **raw; /* get_pathspec() result, not freed by free_pathspec() */
 	int nr;
@@ -487,6 +490,9 @@ struct pathspec {
 };
 
 extern int init_pathspec(struct pathspec *, const char **);
+extern void parse_pathspec(struct pathspec *pathspec, unsigned magic,
+			   unsigned flags, const char *prefix,
+			   const char **args);
 extern void free_pathspec(struct pathspec *);
 extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec);
 
diff --git a/revision.c b/revision.c
index 95d21e6..a044242 100644
--- a/revision.c
+++ b/revision.c
@@ -1851,8 +1851,8 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
 		 */
 		ALLOC_GROW(prune_data.path, prune_data.nr+1, prune_data.alloc);
 		prune_data.path[prune_data.nr++] = NULL;
-		init_pathspec(&revs->prune_data,
-			      get_pathspec(revs->prefix, prune_data.path));
+		parse_pathspec(&revs->prune_data, PATHSPEC_FROMTOP, 0,
+			       revs->prefix, prune_data.path);
 	}
 
 	if (revs->def == NULL)
diff --git a/setup.c b/setup.c
index 573ef79..cd6680e 100644
--- a/setup.c
+++ b/setup.c
@@ -268,9 +268,9 @@ static int pathspec_item_cmp(const void *a_, const void *b_)
  * Given command line arguments and a prefix, convert the input to
  * pathspec. die() if any magic other than ones in magic_mask.
  */
-static void parse_pathspec(struct pathspec *pathspec,
-			   unsigned magic_mask, unsigned flags,
-			   const char *prefix, const char **argv)
+void parse_pathspec(struct pathspec *pathspec,
+		    unsigned magic_mask, unsigned flags,
+		    const char *prefix, const char **argv)
 {
 	struct pathspec_item *item;
 	const char *entry = *argv;
-- 
1.8.0.rc2.23.g1fb49df