[PATCH 3/3] Add "ls", which is basically ls-files with user-friendly settings

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

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 builtin-ls-files.c |   31 +++++++++++++++++++++++++++++++
 builtin.h          |    1 +
 git.c              |    1 +
 3 files changed, 33 insertions(+), 0 deletions(-)

diff --git a/builtin-ls-files.c b/builtin-ls-files.c
index e16638e..f63b039 100644
--- a/builtin-ls-files.c
+++ b/builtin-ls-files.c
@@ -11,6 +11,7 @@
 #include "builtin.h"
 #include "tree.h"
 #include "parse-options.h"
+#include "run-command.h"
 
 static int abbrev;
 static int show_deleted;
@@ -31,6 +32,7 @@ static char *ps_matched;
 static const char *with_tree;
 static int exc_given;
 static int max_depth = 0;
+static int show_colums = 0;
 
 static const char *tag_cached = "";
 static const char *tag_unmerged = "";
@@ -461,6 +463,7 @@ static int option_parse_exclude_standard(const struct option *opt,
 
 int cmd_ls_files(int argc, const char **argv, const char *prefix)
 {
+	struct child_process cp;
 	int require_work_tree = 0, show_tag = 0;
 	struct dir_struct dir;
 	struct option builtin_ls_files_options[] = {
@@ -513,6 +516,7 @@ int cmd_ls_files(int argc, const char **argv, const char *prefix)
 		OPT_STRING(0, "with-tree", &with_tree, "tree-ish",
 			"pretend that paths removed since <tree-ish> are still present"),
 		OPT_INTEGER(0, "max-depth", &max_depth, "max recursive depth"),
+		OPT_BOOLEAN(0, "columns", &show_colums, "show in columns"),
 		OPT__ABBREV(&abbrev),
 		OPT_END()
 	};
@@ -591,6 +595,20 @@ int cmd_ls_files(int argc, const char **argv, const char *prefix)
 			die("ls-files --with-tree is incompatible with -s or -u");
 		overlay_tree_on_cache(with_tree, prefix);
 	}
+
+	if (show_colums) {
+		const char *argv[] = { "column", NULL };
+
+		memset(&cp, 0, sizeof(cp));
+		cp.in = -1;
+		cp.out = dup(1);
+		cp.argv = argv;
+		start_command(&cp);
+		close(1);
+		dup2(cp.in, 1);
+		close(cp.in);
+	}
+
 	show_files(&dir, prefix);
 
 	if (ps_matched) {
@@ -602,5 +620,18 @@ int cmd_ls_files(int argc, const char **argv, const char *prefix)
 		return bad ? 1 : 0;
 	}
 
+	if (show_colums) {
+		fflush(stdout);
+		close(1);
+		finish_command(&cp);
+	}
+
 	return 0;
 }
+
+int cmd_ls(int argc, const char **argv, const char *prefix)
+{
+	max_depth = 1;
+	show_colums = 1;
+	return cmd_ls_files(argc, argv, prefix);
+}
diff --git a/builtin.h b/builtin.h
index c3f83c0..d8980e5 100644
--- a/builtin.h
+++ b/builtin.h
@@ -61,6 +61,7 @@ extern int cmd_init_db(int argc, const char **argv, const char *prefix);
 extern int cmd_log(int argc, const char **argv, const char *prefix);
 extern int cmd_log_reflog(int argc, const char **argv, const char *prefix);
 extern int cmd_ls_files(int argc, const char **argv, const char *prefix);
+extern int cmd_ls(int argc, const char **argv, const char *prefix);
 extern int cmd_ls_tree(int argc, const char **argv, const char *prefix);
 extern int cmd_ls_remote(int argc, const char **argv, const char *prefix);
 extern int cmd_mailinfo(int argc, const char **argv, const char *prefix);
diff --git a/git.c b/git.c
index 11544cd..4aff5ec 100644
--- a/git.c
+++ b/git.c
@@ -323,6 +323,7 @@ static void handle_internal_command(int argc, const char **argv)
 		{ "init-db", cmd_init_db },
 		{ "log", cmd_log, RUN_SETUP | USE_PAGER },
 		{ "ls-files", cmd_ls_files, RUN_SETUP },
+		{ "ls", cmd_ls, RUN_SETUP },
 		{ "ls-tree", cmd_ls_tree, RUN_SETUP },
 		{ "ls-remote", cmd_ls_remote },
 		{ "mailinfo", cmd_mailinfo },
-- 
1.6.6.315.g1a406