如何克隆一个仓库(使用libgit2)
我想做的正是git clone
除了libgit2
. 我可能要问的是git clone
真正深入的地方。
到目前为止,这就是我正在做的事情:
- 初始化一个仓库
- 调整配置文件以添加远程
- 创建一个
git_remote
- 下载一个包文件
- 索引包文件并写入索引(给我们一个 .idx 文件)
- (编辑)将所有不同的分支写入磁盘。
- (编辑)
git checkout
以某种方式做。
现在我不知道该怎么办。我唯一的猜测是加载.idx
到 agit_index
并使用git_repository_set_index
,但这也没有显示任何文件。
编辑
我测试git checkout master
了在半克隆的 repo 上运行,并且完成了这项工作。现在我只需要找出如何使用 libgit2 来完成它,而且问题跟踪器中似乎有一些有用的信息。
编辑 2
我现在将添加我当前的代码,希望有一天有人会发现它有用,希望成为我从未找到的快速启动代码。注意:我在这里使用Obj-C
和Objective-Git
,但它主要是普通的 c。
+ (GTRepository *)cloneFromRemoteURL:(NSURL *)remoteURL toLocalURL:(NSURL *)localURL
{
// Let's suppose the URL looks like: https://github.com/libgit2/libgit2.git
// Then we need to get a URL like this too: git://github.com/libgit2/libgit2.git
// This may be a bit dodgy, but it will do for now.
const char *gitURL = [remoteURL.absoluteString stringByReplacingOccurrencesOfString:@"https://github.com/" withString:@"git://github.com/"].UTF8String;
//Setup
int error;
git_repository *repo
git_config *cfg;
git_remote *remote;
NSURL *gitDirURL = [localURL URLByAppendingPathComponent:@".git"];
error = git_repository_open(&repo, gitDirURL.path.UTF8String);
if (error != GIT_SUCCESS) {
git_repository_init(&repo, gitDirURL.path.UTF8String, 1);
//Config
git_repository_config(&cfg, repo);
git_config_set_int32 (cfg, "core.repositoryformatversion", 0);
git_config_set_bool (cfg, "core.filemode", 1);
git_config_set_bool (cfg, "core.bare", 0);
git_config_set_bool (cfg, "core.logallrefupdates", 1);
git_config_set_bool (cfg, "core.ignorecase", 1);
git_config_set_string (cfg, "remote.origin.url", gitURL);
git_config_set_string (cfg, "remote.origin.fetch", "+refs/heads/*:refs/remotes/origin/*");
git_config_set_string (cfg, "branch.master.remote", "origin");
git_config_set_string (cfg, "branch.master.merge", "refs/heads/master");
git_repository_set_workdir(repo, localURL.path.UTF8String);
error = git_remote_new(&remote, repo, "A remote", gitURL, "origin");
git_repository_free(repo);
git_repository_open (&repo, localURL.path.UTF8String);
}
git_repository_config(&cfg, repo);
// connect to repo
error = git_remote_load(&remote, repo, "origin");
error = git_remote_connect(remote, GIT_DIR_FETCH);
// get pack file
git_off_t bytes;
git_indexer_stats stats;
error = git_remote_download(remote, &bytes, &stats);
NSURL *packFolderURL = [localURL URLByAppendingPathComponent:@".git/objects/pack"];
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *array = [fileManager contentsOfDirectoryAtURL:packFolderURL includingPropertiesForKeys:nil options:0 error:nil];
NSLog(@"Dictionary:%@",array);
NSString *result;
for (NSURL *url in array) {
if ([url.path rangeOfString:@".pack"].location != NSNotFound) {
result = url.path;
}
}
const char *packname = [result UTF8String];
// unpack pack file
if (packname != NULL)
{
git_indexer *indexer;
git_indexer_stats stats2;
int error;
char hash[GIT_OID_HEXSZ + 1] = {0};
error = git_indexer_new(&indexer, packname);
error = git_indexer_run(indexer, &stats2);
error = git_indexer_write(indexer);
// Get the packfile's hash (which should become it's filename)
git_oid_fmt(hash, git_indexer_hash(indexer));
NSString *hashStr = [NSString stringWithCString:hash encoding:NSUTF8StringEncoding];
hashStr = [NSString stringWithFormat:@"pack-%@.idx",hashStr];
const char *indexPath = [hashStr UTF8String];
puts(hash);
git_index *index;
git_index_open(&index, indexPath);
git_index_read(index);
git_repository_set_index(repo, index);
git_indexer_free(indexer);
git_remote_update_tips(remote, update_cb2); //No idea what it does, but it seems like it's important… It does make the branches appear in .git/refs/remotes/origin
}
// 不知何故 git checkout master 在这里
return [GTRepository repositoryWithURL:localURL error:nil];
}