[PATCH 4/9] builtin-ls-tree.c: use parse_options()

[Michele Ballabio <barra_cuda@katamail.com>]

Signed-off-by: Michele Ballabio <barra_cuda@katamail.com>
---
 builtin-ls-tree.c |   92 +++++++++++++++++++++--------------------------------
 1 files changed, 36 insertions(+), 56 deletions(-)

diff --git a/builtin-ls-tree.c b/builtin-ls-tree.c
index d25767a..a0b17aa 100644
--- a/builtin-ls-tree.c
+++ b/builtin-ls-tree.c
@@ -9,6 +9,7 @@
 #include "commit.h"
 #include "quote.h"
 #include "builtin.h"
+#include "parse-options.h"
 
 static int line_termination = '\n';
 #define LS_RECURSIVE 1
@@ -22,8 +23,10 @@ static const char **pathspec;
 static int chomp_prefix;
 static const char *ls_tree_prefix;
 
-static const char ls_tree_usage[] =
-	"git ls-tree [-d] [-r] [-t] [-l] [-z] [--name-only] [--name-status] [--full-name] [--abbrev[=<n>]] <tree-ish> [path...]";
+static const char * const ls_tree_usage[] = {
+	"git ls-tree [options] <tree-ish> [path...]",
+	NULL
+};
 
 static int show_recursive(const char *base, int baselen, const char *pathname)
 {
@@ -122,70 +125,47 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
 	unsigned char sha1[20];
 	struct tree *tree;
 
+	const struct option options[] = {
+		OPT_SET_INT('z', NULL, &line_termination,
+			    "\\0 line termination on output", 0),
+		OPT_BIT('r', NULL, &ls_options,
+			"recurse into sub-trees", LS_RECURSIVE),
+		OPT_BIT('d', NULL, &ls_options,
+			"show only the tree, not its children",
+			LS_TREE_ONLY),
+		OPT_BIT('t', NULL, &ls_options,
+			"show tree entries", LS_SHOW_TREES),
+		OPT_BIT('l', "long", &ls_options,
+			"show object size of blob (file) entries",
+			LS_SHOW_SIZE),
+		OPT_BIT(0, "name-only", &ls_options,
+			"list only filenames", LS_NAME_ONLY),
+		OPT_BIT(0, "name-status", &ls_options,
+			"same as --name-only", LS_NAME_ONLY),
+		OPT_SET_INT(0, "full-name", &chomp_prefix,
+			    "show the full path name", 0),
+		OPT__ABBREV(&abbrev),
+		OPT_END()
+	};
+
 	git_config(git_default_config, NULL);
 	ls_tree_prefix = prefix;
 	if (prefix && *prefix)
 		chomp_prefix = strlen(prefix);
-	while (1 < argc && argv[1][0] == '-') {
-		switch (argv[1][1]) {
-		case 'z':
-			line_termination = 0;
-			break;
-		case 'r':
-			ls_options |= LS_RECURSIVE;
-			break;
-		case 'd':
-			ls_options |= LS_TREE_ONLY;
-			break;
-		case 't':
-			ls_options |= LS_SHOW_TREES;
-			break;
-		case 'l':
-			ls_options |= LS_SHOW_SIZE;
-			break;
-		case '-':
-			if (!strcmp(argv[1]+2, "name-only") ||
-			    !strcmp(argv[1]+2, "name-status")) {
-				ls_options |= LS_NAME_ONLY;
-				break;
-			}
-			if (!strcmp(argv[1]+2, "long")) {
-				ls_options |= LS_SHOW_SIZE;
-				break;
-			}
-			if (!strcmp(argv[1]+2, "full-name")) {
-				chomp_prefix = 0;
-				break;
-			}
-			if (!prefixcmp(argv[1]+2, "abbrev=")) {
-				abbrev = strtoul(argv[1]+9, NULL, 10);
-				if (abbrev && abbrev < MINIMUM_ABBREV)
-					abbrev = MINIMUM_ABBREV;
-				else if (abbrev > 40)
-					abbrev = 40;
-				break;
-			}
-			if (!strcmp(argv[1]+2, "abbrev")) {
-				abbrev = DEFAULT_ABBREV;
-				break;
-			}
-			/* otherwise fallthru */
-		default:
-			usage(ls_tree_usage);
-		}
-		argc--; argv++;
-	}
+
+	argc = parse_options(argc, argv, options, ls_tree_usage, 0);
+
 	/* -d -r should imply -t, but -d by itself should not have to. */
 	if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
 	    ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
 		ls_options |= LS_SHOW_TREES;
 
-	if (argc < 2)
-		usage(ls_tree_usage);
-	if (get_sha1(argv[1], sha1))
-		die("Not a valid object name %s", argv[1]);
+	if (argc < 1)
+		usage_with_options(ls_tree_usage, options);
+	if (get_sha1(argv[0], sha1))
+		die("Not a valid object name %s", argv[0]);
 
-	pathspec = get_pathspec(prefix, argv + 2);
+	pathspec = get_pathspec(prefix, argv + 1);
 	tree = parse_tree_indirect(sha1);
 	if (!tree)
 		die("not a tree object");
-- 
1.5.6.3