Hash :
ead10785
Author :
Date :
2019-01-24T11:31:49
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/*
* libgit2 "remote" example - shows how to modify remotes for a repo
*
* Written by the libgit2 contributors
*
* To the extent possible under law, the author(s) have dedicated all copyright
* and related and neighboring rights to this software to the public domain
* worldwide. This software is distributed without any warranty.
*
* You should have received a copy of the CC0 Public Domain Dedication along
* with this software. If not, see
* <http://creativecommons.org/publicdomain/zero/1.0/>.
*/
#include "common.h"
/**
* This is a sample program that is similar to "git remote". See the
* documentation for that (try "git help remote") to understand what this
* program is emulating.
*
* This demonstrates using the libgit2 APIs to modify remotes of a repository.
*/
enum subcmd {
subcmd_add,
subcmd_remove,
subcmd_rename,
subcmd_seturl,
subcmd_show,
};
struct opts {
enum subcmd cmd;
/* for command-specific args */
int argc;
char **argv;
};
static int cmd_add(git_repository *repo, struct opts *o);
static int cmd_remove(git_repository *repo, struct opts *o);
static int cmd_rename(git_repository *repo, struct opts *o);
static int cmd_seturl(git_repository *repo, struct opts *o);
static int cmd_show(git_repository *repo, struct opts *o);
static void parse_subcmd(
struct opts *opt, int argc, char **argv);
static void usage(const char *msg, const char *arg);
int lg2_remote(git_repository *repo, int argc, char *argv[])
{
int retval = 0;
struct opts opt = {0};
parse_subcmd(&opt, argc, argv);
switch (opt.cmd)
{
case subcmd_add:
retval = cmd_add(repo, &opt);
break;
case subcmd_remove:
retval = cmd_remove(repo, &opt);
break;
case subcmd_rename:
retval = cmd_rename(repo, &opt);
break;
case subcmd_seturl:
retval = cmd_seturl(repo, &opt);
break;
case subcmd_show:
retval = cmd_show(repo, &opt);
break;
}
return retval;
}
static int cmd_add(git_repository *repo, struct opts *o)
{
char *name, *url;
git_remote *remote = {0};
if (o->argc != 2)
usage("you need to specify a name and URL", NULL);
name = o->argv[0];
url = o->argv[1];
check_lg2(git_remote_create(&remote, repo, name, url),
"could not create remote", NULL);
return 0;
}
static int cmd_remove(git_repository *repo, struct opts *o)
{
char *name;
if (o->argc != 1)
usage("you need to specify a name", NULL);
name = o->argv[0];
check_lg2(git_remote_delete(repo, name),
"could not delete remote", name);
return 0;
}
static int cmd_rename(git_repository *repo, struct opts *o)
{
int i, retval;
char *old, *new;
git_strarray problems = {0};
if (o->argc != 2)
usage("you need to specify old and new remote name", NULL);
old = o->argv[0];
new = o->argv[1];
retval = git_remote_rename(&problems, repo, old, new);
if (!retval)
return 0;
for (i = 0; i < (int) problems.count; i++) {
puts(problems.strings[0]);
}
git_strarray_free(&problems);
return retval;
}
static int cmd_seturl(git_repository *repo, struct opts *o)
{
int i, retval, push = 0;
char *name = NULL, *url = NULL;
for (i = 0; i < o->argc; i++) {
char *arg = o->argv[i];
if (!strcmp(arg, "--push")) {
push = 1;
} else if (arg[0] != '-' && name == NULL) {
name = arg;
} else if (arg[0] != '-' && url == NULL) {
url = arg;
} else {
usage("invalid argument to set-url", arg);
}
}
if (name == NULL || url == NULL)
usage("you need to specify remote and the new URL", NULL);
if (push)
retval = git_remote_set_pushurl(repo, name, url);
else
retval = git_remote_set_url(repo, name, url);
check_lg2(retval, "could not set URL", url);
return 0;
}
static int cmd_show(git_repository *repo, struct opts *o)
{
int i;
const char *arg, *name, *fetch, *push;
int verbose = 0;
git_strarray remotes = {0};
git_remote *remote = {0};
for (i = 0; i < o->argc; i++) {
arg = o->argv[i];
if (!strcmp(arg, "-v") || !strcmp(arg, "--verbose")) {
verbose = 1;
}
}
check_lg2(git_remote_list(&remotes, repo),
"could not retrieve remotes", NULL);
for (i = 0; i < (int) remotes.count; i++) {
name = remotes.strings[i];
if (!verbose) {
puts(name);
continue;
}
check_lg2(git_remote_lookup(&remote, repo, name),
"could not look up remote", name);
fetch = git_remote_url(remote);
if (fetch)
printf("%s\t%s (fetch)\n", name, fetch);
push = git_remote_pushurl(remote);
/* use fetch URL if no distinct push URL has been set */
push = push ? push : fetch;
if (push)
printf("%s\t%s (push)\n", name, push);
git_remote_free(remote);
}
git_strarray_free(&remotes);
return 0;
}
static void parse_subcmd(
struct opts *opt, int argc, char **argv)
{
char *arg = argv[1];
enum subcmd cmd = 0;
if (argc < 2)
usage("no command specified", NULL);
if (!strcmp(arg, "add")) {
cmd = subcmd_add;
} else if (!strcmp(arg, "remove")) {
cmd = subcmd_remove;
} else if (!strcmp(arg, "rename")) {
cmd = subcmd_rename;
} else if (!strcmp(arg, "set-url")) {
cmd = subcmd_seturl;
} else if (!strcmp(arg, "show")) {
cmd = subcmd_show;
} else {
usage("command is not valid", arg);
}
opt->cmd = cmd;
opt->argc = argc - 2; /* executable and subcommand are removed */
opt->argv = argv + 2;
}
static void usage(const char *msg, const char *arg)
{
fputs("usage: remote add <name> <url>\n", stderr);
fputs(" remote remove <name>\n", stderr);
fputs(" remote rename <old> <new>\n", stderr);
fputs(" remote set-url [--push] <name> <newurl>\n", stderr);
fputs(" remote show [-v|--verbose]\n", stderr);
if (msg && !arg)
fprintf(stderr, "\n%s\n", msg);
else if (msg && arg)
fprintf(stderr, "\n%s: %s\n", msg, arg);
exit(1);
}