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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 main(int argc, char *argv[])

{

int retval = 0;

struct opts opt = {0};

git_buf buf = GIT_BUF_INIT_CONST(NULL, 0);

git_repository *repo = NULL;

parse_subcmd(&opt, argc, argv);

git_libgit2_init();

check_lg2(git_repository_discover(&buf, ".", 0, NULL),

"Could not find repository", NULL);

check_lg2(git_repository_open(&repo, buf.ptr),

"Could not open repository", NULL);

git_buf_free(&buf);

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;

}

git_libgit2_shutdown();

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);

}