[PATCH 08/21] ls-files: support --max-depth

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

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 Documentation/git-ls-files.txt | 7 +++++++
 builtin/ls-files.c             | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/Documentation/git-ls-files.txt b/Documentation/git-ls-files.txt
index 99328b9..3d921eb 100644
--- a/Documentation/git-ls-files.txt
+++ b/Documentation/git-ls-files.txt
@@ -160,6 +160,13 @@ a space) at the start of each line:
 	for option syntax. `--column` and `--no-column` without options
 	are equivalent to 'always' and 'never' respectively.
 
+--max-depth=<depth>::
+	For each <pathspec> given on command line, descend at most <depth>
+	levels of directories. A negative value means no limit (default).
+	This option is ignored if <pathspec> contains active wildcards.
+	In other words if "a*" matches a directory named "a*",
+	"*" is matched literally so --max-depth is still effective.
+
 \--::
 	Do not interpret any more arguments as options.
 
diff --git a/builtin/ls-files.c b/builtin/ls-files.c
index 44e5628..09a6b8d 100644
--- a/builtin/ls-files.c
+++ b/builtin/ls-files.c
@@ -503,6 +503,7 @@ static int option_parse_exclude_standard(const struct option *opt,
 int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix)
 {
 	int require_work_tree = 0, show_tag = 0, i;
+	int max_depth = -1;
 	const char *max_prefix;
 	struct dir_struct dir;
 	struct exclude_list *el;
@@ -560,6 +561,9 @@ int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix)
 			N_("pretend that paths removed since <tree-ish> are still present")),
 		OPT__COLOR(&use_color, N_("show color")),
 		OPT_COLUMN(0, "column", &colopts, N_("show files in columns")),
+		{ OPTION_INTEGER, 0, "max-depth", &max_depth, N_("depth"),
+			N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
+			NULL, 1 },
 		OPT__ABBREV(&abbrev),
 		OPT_BOOL(0, "debug", &debug_mode, N_("show debugging data")),
 		OPT_END()
@@ -624,8 +628,11 @@ int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix)
 
 	parse_pathspec(&pathspec, 0,
 		       PATHSPEC_PREFER_CWD |
+		       (max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0) |
 		       PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP,
 		       prefix, argv);
+	pathspec.max_depth = max_depth;
+	pathspec.recursive = 1;
 
 	/* Find common prefix for all pathspec's */
 	max_prefix = common_prefix(&pathspec);
-- 
2.2.0.84.ge9c7a8a