[PATCH 7/9] ls-files: add --narrow-match=spec option to test narrow matching

[Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 builtin-ls-files.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/builtin-ls-files.c b/builtin-ls-files.c
index bcb1536..0064f73 100644
--- a/builtin-ls-files.c
+++ b/builtin-ls-files.c
@@ -29,6 +29,7 @@ static const char **pathspec;
 static int error_unmatch;
 static char *ps_matched;
 static const char *with_tree;
+static const char *narrow_spec;
 
 static const char *tag_cached = "";
 static const char *tag_unmerged = "";
@@ -219,6 +220,7 @@ static void show_ce_entry(const char *tag, struct cache_entry *ce)
 	write_name_quoted(ce->name + offset, stdout, line_terminator);
 }
 
+int match_narrow_spec(const char *spec_, const char *path); /* unpack-trees.c */
 static void show_files(struct dir_struct *dir, const char *prefix)
 {
 	int i;
@@ -248,6 +250,8 @@ static void show_files(struct dir_struct *dir, const char *prefix)
 				continue;
 			if (show_checkout && ce_no_checkout(ce))
 				continue;
+			if (narrow_spec && !match_narrow_spec(narrow_spec, ce->name))
+				continue;
 			show_ce_entry(ce_stage(ce) ? tag_unmerged : tag_cached, ce);
 		}
 	}
@@ -429,7 +433,7 @@ static const char ls_files_usage[] =
 	"git ls-files [-z] [-t] [-v] (--[cached|checkout|deleted|others|stage|unmerged|killed|modified])* "
 	"[ --ignored ] [--exclude=<pattern>] [--exclude-from=<file>] "
 	"[ --exclude-per-directory=<filename> ] [--exclude-standard] "
-	"[--full-name] [--abbrev] [--] [<file>]*";
+	"[--narrow-match=narrowspec] [--full-name] [--abbrev] [--] [<file>]*";
 
 int cmd_ls_files(int argc, const char **argv, const char *prefix)
 {
@@ -472,6 +476,10 @@ int cmd_ls_files(int argc, const char **argv, const char *prefix)
 			show_checkout = 1;
 			continue;
 		}
+		if (!prefixcmp(arg, "--narrow-match=")) {
+			narrow_spec = arg+15;
+			continue;
+		}
 		if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
 			show_deleted = 1;
 			continue;
-- 
1.6.0.rc3.250.g8dd0
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