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git-diff-cache: fix argument parsing

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And make the code more readable while at it.
This commit is contained in:
Linus Torvalds 2005-05-24 18:10:11 -07:00
parent 8597697458
commit 6c56c5340a
1 changed files with 22 additions and 14 deletions
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36
diff-cache.c
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@ -158,16 +158,27 @@ static char *diff_cache_usage =
int main(int argc, const char **argv)
{
unsigned char tree_sha1[20];
const char *tree_name = NULL;
unsigned char sha1[20];
const char **pathspec = NULL;
void *tree;
unsigned long size;
int ret;
int i;
read_cache();
while (argc > 2) {
const char *arg = argv[1];
argv++;
argc--;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (*arg != '-') {
if (tree_name) {
pathspec = argv + i;
break;
}
tree_name = arg;
continue;
}
if (!strcmp(arg, "-r")) {
/* We accept the -r flag just to look like git-diff-tree */
continue;
@ -209,30 +220,27 @@ int main(int argc, const char **argv)
usage(diff_cache_usage);
}
if (argc < 2 || get_sha1(argv[1], tree_sha1))
if (!tree_name || get_sha1(tree_name, sha1))
usage(diff_cache_usage);
argv++;
argc--;
/* The rest is for paths restriction. */
diff_setup(reverse_diff);
mark_merge_entries();
tree = read_object_with_reference(tree_sha1, "tree", &size, NULL);
tree = read_object_with_reference(sha1, "tree", &size, NULL);
if (!tree)
die("bad tree object %s", argv[1]);
die("bad tree object %s", tree_name);
if (read_tree(tree, size, 1))
die("unable to read tree object %s", argv[1]);
die("unable to read tree object %s", tree_name);
ret = diff_cache(active_cache, active_nr);
if (detect_rename)
diffcore_rename(detect_rename, diff_score_opt);
if (pickaxe)
diffcore_pickaxe(pickaxe);
if (2 <= argc)
diffcore_pathspec(argv + 1);
if (pathspec)
diffcore_pathspec(pathspec);
diff_flush(diff_output_format, 1);
return ret;
}