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git-cat-file: Make option parsing a little more flexible

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This will make it easier to add newer options later.

Signed-off-by: Adam Roben <aroben@apple.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Adam Roben 2008-04-23 15:17:45 -04:00 committed by Junio C Hamano
parent 9cf71b176c
commit 4814dbe830
1 changed files with 29 additions and 11 deletions
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38
builtin-cat-file.c
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@ -143,23 +143,41 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name)
return 0;
}
static const char cat_file_usage[] = "git-cat-file [-t|-s|-e|-p|<type>] <sha1>";
int cmd_cat_file(int argc, const char **argv, const char *prefix)
{
int opt;
const char *exp_type, *obj_name;
int i, opt = 0;
const char *exp_type = NULL, *obj_name = NULL;
git_config(git_default_config);
if (argc != 3)
usage("git-cat-file [-t|-s|-e|-p|<type>] <sha1>");
exp_type = argv[1];
obj_name = argv[2];
opt = 0;
if ( exp_type[0] == '-' ) {
for (i = 1; i < argc; ++i) {
const char *arg = argv[i];
if (!strcmp(arg, "-t") || !strcmp(arg, "-s") || !strcmp(arg, "-e") || !strcmp(arg, "-p")) {
exp_type = arg;
opt = exp_type[1];
if ( !opt || exp_type[2] )
opt = -1; /* Not a single character option */
continue;
}
if (arg[0] == '-')
usage(cat_file_usage);
if (!exp_type) {
exp_type = arg;
continue;
}
if (obj_name)
usage(cat_file_usage);
obj_name = arg;
break;
}
if (!exp_type || !obj_name)
usage(cat_file_usage);
return cat_one_file(opt, exp_type, obj_name);
}