[PATCH] Add '-z' to merge-tree.c

This adds '-z' to merge-tree and changes its default line termination to
LF to make it consistent with your other recent changes.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/merge-tree.c b/merge-tree.c
index 00ae4e8..ef9a54d 100644 (file)
--- a/merge-tree.c
+++ b/merge-tree.c
@@ -1,5 +1,7 @@
 #include "cache.h"
 
+static int line_termination = '\n';
+
 struct tree_entry {
        unsigned mode;
        unsigned char *sha1;
@@ -35,7 +37,8 @@ static struct tree_entry *read_tree(unsigned char *sha1)
 
 static void show(const struct tree_entry *a, const char *path)
 {
-       printf("select %o %s %s%c", a->mode, sha1_to_hex(a->sha1), path, 0);
+       printf("select %o %s %s%c", a->mode, sha1_to_hex(a->sha1), path,
+              line_termination);
 }
 
 static void merge(const struct tree_entry *a, const struct tree_entry *b, const struct tree_entry *c, const char *path)
@@ -46,7 +49,7 @@ static void merge(const struct tree_entry *a, const struct tree_entry *b, const
        strcpy(hex_c, sha1_to_hex(c->sha1));
        printf("merge %o->%o,%o %s->%s,%s %s%c",
                a->mode, b->mode, c->mode,
-               hex_a, hex_b, hex_c, path, 0);
+               hex_a, hex_b, hex_c, path, line_termination);
 }
 
 static int same(const struct tree_entry *a, const struct tree_entry *b)
@@ -114,15 +117,29 @@ static void merge_tree(struct tree_entry *src, struct tree_entry *dst1, struct t
        }
 }
 
+static const char *merge_tree_usage =
+    "merge-tree [-z] <src> <dst1> <dst2>";
+
 int main(int argc, char **argv)
 {
        unsigned char src[20], dst1[20], dst2[20];
 
+       while ((1 < argc) && argv[1][0] == '-') {
+               switch (argv[1][1]) {
+               case 'z':
+                       line_termination = 0;
+                       break;
+               default:
+                       usage(merge_tree_usage);
+               }
+               argc--; argv++;
+       }
+
        if (argc != 4 ||
            get_sha1_hex(argv[1], src) ||
            get_sha1_hex(argv[2], dst1) ||
            get_sha1_hex(argv[3], dst2))
-               usage("merge-tree <src> <dst1> <dst2>");
+               usage(merge_tree_usage);
        merge_tree(read_tree(src), read_tree(dst1), read_tree(dst2));
        return 0;
 }