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builtin-cat-file.c: use parse_options()

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This simplifies the option parsing.

Signed-off-by: Michele Ballabio <barra_cuda@katamail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michele Ballabio 2008-05-23 16:19:42 +02:00 committed by Junio C Hamano
parent ffe256f9ba
commit 15d8e56519
1 changed files with 46 additions and 73 deletions
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115
builtin-cat-file.c
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@ -8,6 +8,10 @@
#include "tag.h"
#include "tree.h"
#include "builtin.h"
#include "parse-options.h"
#define BATCH 1
#define BATCH_CHECK 2
static void pprint_tag(const unsigned char *sha1, const char *buf, unsigned long size)
{
@ -158,7 +162,7 @@ static int batch_one_object(const char *obj_name, int print_contents)
return 0;
}
if (print_contents)
if (print_contents == BATCH)
contents = read_sha1_file(sha1, &type, &size);
else
type = sha1_object_info(sha1, &size);
@ -169,7 +173,7 @@ static int batch_one_object(const char *obj_name, int print_contents)
printf("%s %s %lu\n", sha1_to_hex(sha1), typename(type), size);
fflush(stdout);
if (print_contents) {
if (print_contents == BATCH) {
write_or_die(1, contents, size);
printf("\n");
fflush(stdout);
@ -192,89 +196,58 @@ static int batch_objects(int print_contents)
return 0;
}
static const char cat_file_usage[] = "git-cat-file [ [-t|-s|-e|-p|<type>] <sha1> | [--batch|--batch-check] < <list_of_sha1s> ]";
static const char * const cat_file_usage[] = {
"git-cat-file [-t|-s|-e|-p|<type>] <sha1>",
"git-cat-file [--batch|--batch-check] < <list_of_sha1s>",
NULL
};
int cmd_cat_file(int argc, const char **argv, const char *prefix)
{
int i, opt = 0, batch = 0, batch_check = 0;
int opt = 0, batch = 0;
const char *exp_type = NULL, *obj_name = NULL;
const struct option options[] = {
OPT_GROUP("<type> can be one of: blob, tree, commit, tag"),
OPT_SET_INT('t', NULL, &opt, "show object type", 't'),
OPT_SET_INT('s', NULL, &opt, "show object size", 's'),
OPT_SET_INT('e', NULL, &opt,
"exit with zero when there's no error", 'e'),
OPT_SET_INT('p', NULL, &opt, "pretty-print object's content", 'p'),
OPT_SET_INT(0, "batch", &batch,
"show info and content of objects feeded on stdin", BATCH),
OPT_SET_INT(0, "batch-check", &batch,
"show info about objects feeded on stdin",
BATCH_CHECK),
OPT_END()
};
git_config(git_default_config);
for (i = 1; i < argc; ++i) {
const char *arg = argv[i];
int is_batch = 0, is_batch_check = 0;
if (argc != 3 && argc != 2)
usage_with_options(cat_file_usage, options);
is_batch = !strcmp(arg, "--batch");
if (!is_batch)
is_batch_check = !strcmp(arg, "--batch-check");
argc = parse_options(argc, argv, options, cat_file_usage, 0);
if (is_batch || is_batch_check) {
if (opt) {
error("git-cat-file: Can't use %s with -%c", arg, opt);
usage(cat_file_usage);
} else if (exp_type) {
error("git-cat-file: Can't use %s when a type (\"%s\") is specified", arg, exp_type);
usage(cat_file_usage);
} else if (obj_name) {
error("git-cat-file: Can't use %s when an object (\"%s\") is specified", arg, obj_name);
usage(cat_file_usage);
}
if ((is_batch && batch_check) || (is_batch_check && batch)) {
error("git-cat-file: Can't use %s with %s", arg, is_batch ? "--batch-check" : "--batch");
usage(cat_file_usage);
}
if (is_batch)
batch = 1;
if (argc == 1)
obj_name = argv[0];
else
batch_check = 1;
continue;
usage_with_options(cat_file_usage, options);
}
if (!opt && !batch) {
if (argc == 2) {
exp_type = argv[0];
obj_name = argv[1];
} else
usage_with_options(cat_file_usage, options);
}
if (batch && (opt || argc)) {
usage_with_options(cat_file_usage, options);
}
if (!strcmp(arg, "-t") || !strcmp(arg, "-s") || !strcmp(arg, "-e") || !strcmp(arg, "-p")) {
if (batch || batch_check) {
error("git-cat-file: Can't use %s with %s", arg, batch ? "--batch" : "--batch-check");
usage(cat_file_usage);
}
exp_type = arg;
opt = exp_type[1];
continue;
}
if (arg[0] == '-')
usage(cat_file_usage);
if (!exp_type) {
if (batch || batch_check) {
error("git-cat-file: Can't specify a type (\"%s\") with %s", arg, batch ? "--batch" : "--batch-check");
usage(cat_file_usage);
}
exp_type = arg;
continue;
}
if (obj_name)
usage(cat_file_usage);
// We should have hit one of the earlier if (batch || batch_check) cases before
// getting here.
assert(!batch);
assert(!batch_check);
obj_name = arg;
break;
}
if (batch || batch_check)
if (batch)
return batch_objects(batch);
if (!exp_type || !obj_name)
usage(cat_file_usage);
return cat_one_file(opt, exp_type, obj_name);
}