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/*
* Copyright (c) 2022 Egor Tensin <egor@tensin.name>
* This file is part of the "cimple" project.
* For details, see https://github.com/egor-tensin/cimple.
* Distributed under the MIT License.
*/
#include "git.h"
#include "log.h"
#include <git2.h>
#include <stdlib.h>
#define git_log_err(fn) \
do { \
const git_error* error = git_error_last(); \
const char* msg = error && error->message ? error->message : "???"; \
log_err("%s: %s\n", fn, msg); \
} while (0)
int libgit_init(void) {
int ret = 0;
ret = git_libgit2_init();
if (ret < 0) {
git_log_err("git_libgit2_init");
return ret;
}
return 0;
}
void libgit_shutdown(void) {
git_libgit2_shutdown();
}
int libgit_clone(git_repository** repo, const char* url, const char* dir) {
git_clone_options opts;
int ret = 0;
log("Cloning git repository from %s to %s\n", url, dir);
ret = git_clone_options_init(&opts, GIT_CLONE_OPTIONS_VERSION);
if (ret < 0) {
git_log_err("git_clone_options_init");
return ret;
}
opts.checkout_opts.checkout_strategy = GIT_CHECKOUT_NONE;
ret = git_clone(repo, url, dir, &opts);
if (ret < 0) {
git_log_err("git_clone");
return ret;
}
return 0;
}
int libgit_clone_to_tmp(git_repository** repo, const char* url) {
char dir[] = "/tmp/git.XXXXXX";
if (!mkdtemp(dir)) {
log_errno("mkdtemp");
return -1;
}
return libgit_clone(repo, url, dir);
}
void libgit_repository_free(git_repository* repo) {
git_repository_free(repo);
}
int libgit_checkout(git_repository* repo, const char* rev) {
git_checkout_options opts;
git_object* obj;
int ret = 0;
log("Checking out revision %s\n", rev);
ret = git_revparse_single(&obj, repo, rev);
if (ret < 0) {
git_log_err("git_revparse_single");
return ret;
}
ret = git_checkout_options_init(&opts, GIT_CHECKOUT_OPTIONS_VERSION);
if (ret < 0) {
git_log_err("git_checkout_options_init");
goto free_obj;
}
opts.checkout_strategy = GIT_CHECKOUT_FORCE;
ret = git_checkout_tree(repo, obj, &opts);
if (ret < 0) {
git_log_err("git_checkout_tree");
goto free_obj;
}
ret = git_repository_set_head_detached(repo, git_object_id(obj));
if (ret < 0) {
git_log_err("git_repository_set_head_detached");
goto free_obj;
}
free_obj:
git_object_free(obj);
return ret;
}
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