diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/remote.c | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/src/remote.c b/src/remote.c index 3506d5f08..559d71ded 100644 --- a/src/remote.c +++ b/src/remote.c @@ -798,3 +798,288 @@ void git_remote_set_autotag(git_remote *remote, int value) { remote->download_tags = value; } + +static int ensure_remote_doesnot_exist(git_repository *repo, const char *name) +{ + int error; + git_remote *remote; + + error = git_remote_load(&remote, repo, name); + + if (error == GIT_ENOTFOUND) + return 0; + + if (error < 0) + return error; + + git_remote_free(remote); + + giterr_set( + GITERR_CONFIG, + "Remote '%s' already exists.", name); + + return GIT_EEXISTS; +} + +static int rename_remote_config_section( + git_repository *repo, + const char *old_name, + const char *new_name) +{ + git_buf old_section_name = GIT_BUF_INIT, + new_section_name = GIT_BUF_INIT; + int error = -1; + + if (git_buf_printf(&old_section_name, "remote.%s", old_name) < 0) + goto cleanup; + + if (git_buf_printf(&new_section_name, "remote.%s", new_name) < 0) + goto cleanup; + + error = git_config_rename_section( + repo, + git_buf_cstr(&old_section_name), + git_buf_cstr(&new_section_name)); + +cleanup: + git_buf_free(&old_section_name); + git_buf_free(&new_section_name); + + return error; +} + +struct update_data +{ + git_config *config; + const char *old_remote_name; + const char *new_remote_name; +}; + +static int update_config_entries_cb( + const git_config_entry *entry, + void *payload) +{ + struct update_data *data = (struct update_data *)payload; + + if (strcmp(entry->value, data->old_remote_name)) + return 0; + + return git_config_set_string( + data->config, + entry->name, + data->new_remote_name); +} + +static int update_branch_remote_config_entry( + git_repository *repo, + const char *old_name, + const char *new_name) +{ + git_config *config; + struct update_data data; + + if (git_repository_config__weakptr(&config, repo) < 0) + return -1; + + data.config = config; + data.old_remote_name = old_name; + data.new_remote_name = new_name; + + return git_config_foreach_match( + config, + "branch\\..+\\.remote", + update_config_entries_cb, &data); +} + +static int rename_cb(const char *ref, void *data) +{ + if (git__prefixcmp(ref, GIT_REFS_REMOTES_DIR)) + return 0; + + return git_vector_insert((git_vector *)data, git__strdup(ref)); +} + +static int rename_one_remote_reference( + git_repository *repo, + const char *reference_name, + const char *old_remote_name, + const char *new_remote_name) +{ + int error; + git_buf new_name = GIT_BUF_INIT; + git_reference *reference = NULL; + + if (git_buf_printf( + &new_name, + GIT_REFS_REMOTES_DIR "%s%s", + new_remote_name, + reference_name + strlen(GIT_REFS_REMOTES_DIR) + strlen(old_remote_name)) < 0) + return -1; + + if (git_reference_lookup(&reference, repo, reference_name) < 0) + goto cleanup; + + error = git_reference_rename(reference, git_buf_cstr(&new_name), 0); + +cleanup: + git_reference_free(reference); + git_buf_free(&new_name); + return error; +} + +static int rename_remote_references( + git_repository *repo, + const char *old_name, + const char *new_name) +{ + git_vector refnames; + int error = -1; + unsigned int i; + char *name; + + if (git_vector_init(&refnames, 8, NULL) < 0) + goto cleanup; + + if (git_reference_foreach( + repo, + GIT_REF_LISTALL, + rename_cb, + &refnames) < 0) + goto cleanup; + + git_vector_foreach(&refnames, i, name) { + if ((error = rename_one_remote_reference(repo, name, old_name, new_name)) < 0) + goto cleanup; + } + + error = 0; +cleanup: + git_vector_foreach(&refnames, i, name) { + git__free(name); + } + + git_vector_free(&refnames); + return error; +} + +static int rename_fetch_refspecs( + git_remote *remote, + const char *new_name, + int (*callback)(const char *problematic_refspec, void *payload), + void *payload) +{ + git_config *config; + const git_refspec *fetch_refspec; + git_buf dst_prefix = GIT_BUF_INIT, serialized = GIT_BUF_INIT; + const char* pos; + int error = -1; + + fetch_refspec = git_remote_fetchspec(remote); + + /* Is there a refspec to deal with? */ + if (fetch_refspec->src == NULL && + fetch_refspec->dst == NULL) + return 0; + + if (git_refspec__serialize(&serialized, fetch_refspec) < 0) + goto cleanup; + + /* Is it an in-memory remote? */ + if (remote->name == '\0') { + error = (callback(git_buf_cstr(&serialized), payload) < 0) ? GIT_EUSER : 0; + goto cleanup; + } + + if (git_buf_printf(&dst_prefix, ":refs/remotes/%s/", remote->name) < 0) + goto cleanup; + + pos = strstr(git_buf_cstr(&serialized), git_buf_cstr(&dst_prefix)); + + /* Does the dst part of the refspec follow the extected standard format? */ + if (!pos) { + error = (callback(git_buf_cstr(&serialized), payload) < 0) ? GIT_EUSER : 0; + goto cleanup; + } + + if (git_buf_splice( + &serialized, + pos - git_buf_cstr(&serialized) + strlen(":refs/remotes/"), + strlen(remote->name), new_name, + strlen(new_name)) < 0) + goto cleanup; + + git_refspec__free(&remote->fetch); + + if (git_refspec__parse(&remote->fetch, git_buf_cstr(&serialized), true) < 0) + goto cleanup; + + if (git_repository_config__weakptr(&config, remote->repo) < 0) + goto cleanup; + + error = update_config_refspec(config, new_name, &remote->fetch, GIT_DIR_FETCH); + +cleanup: + git_buf_free(&serialized); + git_buf_free(&dst_prefix); + return error; +} + +int git_remote_rename( + git_remote *remote, + const char *new_name, + int (*callback)(const char *problematic_refspec, void *payload), + void *payload) +{ + int error; + + assert(remote && new_name); + + if ((error = ensure_remote_doesnot_exist(remote->repo, new_name)) < 0) + return error; + + if ((error = ensure_remote_name_is_valid(new_name)) < 0) + return error; + + if (!remote->name) { + if ((error = rename_fetch_refspecs( + remote, + new_name, + callback, + payload)) < 0) + return error; + + remote->name = git__strdup(new_name); + + return git_remote_save(remote); + } + + if ((error = rename_remote_config_section( + remote->repo, + remote->name, + new_name)) < 0) + return error; + + if ((error = update_branch_remote_config_entry( + remote->repo, + remote->name, + new_name)) < 0) + return error; + + if ((error = rename_remote_references( + remote->repo, + remote->name, + new_name)) < 0) + return error; + + if ((error = rename_fetch_refspecs( + remote, + new_name, + callback, + payload)) < 0) + return error; + + git__free(remote->name); + remote->name = git__strdup(new_name); + + return 0; +} |