diff options
Diffstat (limited to 'src/worktree.c')
| -rw-r--r-- | src/worktree.c | 630 |
1 files changed, 0 insertions, 630 deletions
diff --git a/src/worktree.c b/src/worktree.c deleted file mode 100644 index fe8db7743..000000000 --- a/src/worktree.c +++ /dev/null @@ -1,630 +0,0 @@ -/* - * Copyright (C) the libgit2 contributors. All rights reserved. - * - * This file is part of libgit2, distributed under the GNU GPL v2 with - * a Linking Exception. For full terms see the included COPYING file. - */ - -#include "worktree.h" - -#include "git2/branch.h" -#include "git2/commit.h" -#include "git2/worktree.h" - -#include "repository.h" - -static bool is_worktree_dir(const char *dir) -{ - git_buf buf = GIT_BUF_INIT; - int error; - - if (git_buf_sets(&buf, dir) < 0) - return -1; - - error = git_path_contains_file(&buf, "commondir") - && git_path_contains_file(&buf, "gitdir") - && git_path_contains_file(&buf, "HEAD"); - - git_buf_dispose(&buf); - return error; -} - -int git_worktree_list(git_strarray *wts, git_repository *repo) -{ - git_vector worktrees = GIT_VECTOR_INIT; - git_buf path = GIT_BUF_INIT; - char *worktree; - size_t i, len; - int error; - - GIT_ASSERT_ARG(wts); - GIT_ASSERT_ARG(repo); - - wts->count = 0; - wts->strings = NULL; - - if ((error = git_buf_joinpath(&path, repo->commondir, "worktrees/")) < 0) - goto exit; - if (!git_path_exists(path.ptr) || git_path_is_empty_dir(path.ptr)) - goto exit; - if ((error = git_path_dirload(&worktrees, path.ptr, path.size, 0x0)) < 0) - goto exit; - - len = path.size; - - git_vector_foreach(&worktrees, i, worktree) { - git_buf_truncate(&path, len); - git_buf_puts(&path, worktree); - - if (!is_worktree_dir(path.ptr)) { - git_vector_remove(&worktrees, i); - git__free(worktree); - } - } - - wts->strings = (char **)git_vector_detach(&wts->count, NULL, &worktrees); - -exit: - git_buf_dispose(&path); - - return error; -} - -char *git_worktree__read_link(const char *base, const char *file) -{ - git_buf path = GIT_BUF_INIT, buf = GIT_BUF_INIT; - - GIT_ASSERT_ARG_WITH_RETVAL(base, NULL); - GIT_ASSERT_ARG_WITH_RETVAL(file, NULL); - - if (git_buf_joinpath(&path, base, file) < 0) - goto err; - if (git_futils_readbuffer(&buf, path.ptr) < 0) - goto err; - git_buf_dispose(&path); - - git_buf_rtrim(&buf); - - if (!git_path_is_relative(buf.ptr)) - return git_buf_detach(&buf); - - if (git_buf_sets(&path, base) < 0) - goto err; - if (git_path_apply_relative(&path, buf.ptr) < 0) - goto err; - git_buf_dispose(&buf); - - return git_buf_detach(&path); - -err: - git_buf_dispose(&buf); - git_buf_dispose(&path); - - return NULL; -} - -static int write_wtfile(const char *base, const char *file, const git_buf *buf) -{ - git_buf path = GIT_BUF_INIT; - int err; - - GIT_ASSERT_ARG(base); - GIT_ASSERT_ARG(file); - GIT_ASSERT_ARG(buf); - - if ((err = git_buf_joinpath(&path, base, file)) < 0) - goto out; - - if ((err = git_futils_writebuffer(buf, path.ptr, O_CREAT|O_EXCL|O_WRONLY, 0644)) < 0) - goto out; - -out: - git_buf_dispose(&path); - - return err; -} - -static int open_worktree_dir(git_worktree **out, const char *parent, const char *dir, const char *name) -{ - git_buf gitdir = GIT_BUF_INIT; - git_worktree *wt = NULL; - int error = 0; - - if (!is_worktree_dir(dir)) { - error = -1; - goto out; - } - - if ((error = git_path_validate_workdir(NULL, dir)) < 0) - goto out; - - if ((wt = git__calloc(1, sizeof(*wt))) == NULL) { - error = -1; - goto out; - } - - if ((wt->name = git__strdup(name)) == NULL || - (wt->commondir_path = git_worktree__read_link(dir, "commondir")) == NULL || - (wt->gitlink_path = git_worktree__read_link(dir, "gitdir")) == NULL || - (parent && (wt->parent_path = git__strdup(parent)) == NULL) || - (wt->worktree_path = git_path_dirname(wt->gitlink_path)) == NULL) { - error = -1; - goto out; - } - - if ((error = git_path_prettify_dir(&gitdir, dir, NULL)) < 0) - goto out; - wt->gitdir_path = git_buf_detach(&gitdir); - - if ((error = git_worktree_is_locked(NULL, wt)) < 0) - goto out; - wt->locked = !!error; - error = 0; - - *out = wt; - -out: - if (error) - git_worktree_free(wt); - git_buf_dispose(&gitdir); - - return error; -} - -int git_worktree_lookup(git_worktree **out, git_repository *repo, const char *name) -{ - git_buf path = GIT_BUF_INIT; - git_worktree *wt = NULL; - int error; - - GIT_ASSERT_ARG(repo); - GIT_ASSERT_ARG(name); - - *out = NULL; - - if ((error = git_buf_join3(&path, '/', repo->commondir, "worktrees", name)) < 0) - goto out; - - if ((error = (open_worktree_dir(out, git_repository_workdir(repo), path.ptr, name))) < 0) - goto out; - -out: - git_buf_dispose(&path); - - if (error) - git_worktree_free(wt); - - return error; -} - -int git_worktree_open_from_repository(git_worktree **out, git_repository *repo) -{ - git_buf parent = GIT_BUF_INIT; - const char *gitdir, *commondir; - char *name = NULL; - int error = 0; - - if (!git_repository_is_worktree(repo)) { - git_error_set(GIT_ERROR_WORKTREE, "cannot open worktree of a non-worktree repo"); - error = -1; - goto out; - } - - gitdir = git_repository_path(repo); - commondir = git_repository_commondir(repo); - - if ((error = git_path_prettify_dir(&parent, "..", commondir)) < 0) - goto out; - - /* The name is defined by the last component in '.git/worktree/%s' */ - name = git_path_basename(gitdir); - - if ((error = open_worktree_dir(out, parent.ptr, gitdir, name)) < 0) - goto out; - -out: - git__free(name); - git_buf_dispose(&parent); - - return error; -} - -void git_worktree_free(git_worktree *wt) -{ - if (!wt) - return; - - git__free(wt->commondir_path); - git__free(wt->worktree_path); - git__free(wt->gitlink_path); - git__free(wt->gitdir_path); - git__free(wt->parent_path); - git__free(wt->name); - git__free(wt); -} - -int git_worktree_validate(const git_worktree *wt) -{ - GIT_ASSERT_ARG(wt); - - if (!is_worktree_dir(wt->gitdir_path)) { - git_error_set(GIT_ERROR_WORKTREE, - "worktree gitdir ('%s') is not valid", - wt->gitlink_path); - return GIT_ERROR; - } - - if (wt->parent_path && !git_path_exists(wt->parent_path)) { - git_error_set(GIT_ERROR_WORKTREE, - "worktree parent directory ('%s') does not exist ", - wt->parent_path); - return GIT_ERROR; - } - - if (!git_path_exists(wt->commondir_path)) { - git_error_set(GIT_ERROR_WORKTREE, - "worktree common directory ('%s') does not exist ", - wt->commondir_path); - return GIT_ERROR; - } - - if (!git_path_exists(wt->worktree_path)) { - git_error_set(GIT_ERROR_WORKTREE, - "worktree directory '%s' does not exist", - wt->worktree_path); - return GIT_ERROR; - } - - return 0; -} - -int git_worktree_add_options_init(git_worktree_add_options *opts, - unsigned int version) -{ - GIT_INIT_STRUCTURE_FROM_TEMPLATE(opts, version, - git_worktree_add_options, GIT_WORKTREE_ADD_OPTIONS_INIT); - return 0; -} - -#ifndef GIT_DEPRECATE_HARD -int git_worktree_add_init_options(git_worktree_add_options *opts, - unsigned int version) -{ - return git_worktree_add_options_init(opts, version); -} -#endif - -int git_worktree_add(git_worktree **out, git_repository *repo, - const char *name, const char *worktree, - const git_worktree_add_options *opts) -{ - git_buf gitdir = GIT_BUF_INIT, wddir = GIT_BUF_INIT, buf = GIT_BUF_INIT; - git_reference *ref = NULL, *head = NULL; - git_commit *commit = NULL; - git_repository *wt = NULL; - git_checkout_options coopts = GIT_CHECKOUT_OPTIONS_INIT; - git_worktree_add_options wtopts = GIT_WORKTREE_ADD_OPTIONS_INIT; - int err; - - GIT_ERROR_CHECK_VERSION( - opts, GIT_WORKTREE_ADD_OPTIONS_VERSION, "git_worktree_add_options"); - - if (opts) - memcpy(&wtopts, opts, sizeof(wtopts)); - - GIT_ASSERT_ARG(out); - GIT_ASSERT_ARG(repo); - GIT_ASSERT_ARG(name); - GIT_ASSERT_ARG(worktree); - - *out = NULL; - - if (wtopts.ref) { - if (!git_reference_is_branch(wtopts.ref)) { - git_error_set(GIT_ERROR_WORKTREE, "reference is not a branch"); - err = -1; - goto out; - } - - if (git_branch_is_checked_out(wtopts.ref)) { - git_error_set(GIT_ERROR_WORKTREE, "reference is already checked out"); - err = -1; - goto out; - } - } - - /* Create gitdir directory ".git/worktrees/<name>" */ - if ((err = git_buf_joinpath(&gitdir, repo->commondir, "worktrees")) < 0) - goto out; - if (!git_path_exists(gitdir.ptr)) - if ((err = git_futils_mkdir(gitdir.ptr, 0755, GIT_MKDIR_EXCL)) < 0) - goto out; - if ((err = git_buf_joinpath(&gitdir, gitdir.ptr, name)) < 0) - goto out; - if ((err = git_futils_mkdir(gitdir.ptr, 0755, GIT_MKDIR_EXCL)) < 0) - goto out; - if ((err = git_path_prettify_dir(&gitdir, gitdir.ptr, NULL)) < 0) - goto out; - - /* Create worktree work dir */ - if ((err = git_futils_mkdir(worktree, 0755, GIT_MKDIR_EXCL)) < 0) - goto out; - if ((err = git_path_prettify_dir(&wddir, worktree, NULL)) < 0) - goto out; - - if (wtopts.lock) { - int fd; - - if ((err = git_buf_joinpath(&buf, gitdir.ptr, "locked")) < 0) - goto out; - - if ((fd = p_creat(buf.ptr, 0644)) < 0) { - err = fd; - goto out; - } - - p_close(fd); - git_buf_clear(&buf); - } - - /* Create worktree .git file */ - if ((err = git_buf_printf(&buf, "gitdir: %s\n", gitdir.ptr)) < 0) - goto out; - if ((err = write_wtfile(wddir.ptr, ".git", &buf)) < 0) - goto out; - - /* Create gitdir files */ - if ((err = git_path_prettify_dir(&buf, repo->commondir, NULL) < 0) - || (err = git_buf_putc(&buf, '\n')) < 0 - || (err = write_wtfile(gitdir.ptr, "commondir", &buf)) < 0) - goto out; - if ((err = git_buf_joinpath(&buf, wddir.ptr, ".git")) < 0 - || (err = git_buf_putc(&buf, '\n')) < 0 - || (err = write_wtfile(gitdir.ptr, "gitdir", &buf)) < 0) - goto out; - - /* Set up worktree reference */ - if (wtopts.ref) { - if ((err = git_reference_dup(&ref, wtopts.ref)) < 0) - goto out; - } else { - if ((err = git_repository_head(&head, repo)) < 0) - goto out; - if ((err = git_commit_lookup(&commit, repo, &head->target.oid)) < 0) - goto out; - if ((err = git_branch_create(&ref, repo, name, commit, false)) < 0) - goto out; - } - - /* Set worktree's HEAD */ - if ((err = git_repository_create_head(gitdir.ptr, git_reference_name(ref))) < 0) - goto out; - if ((err = git_repository_open(&wt, wddir.ptr)) < 0) - goto out; - - /* Checkout worktree's HEAD */ - coopts.checkout_strategy = GIT_CHECKOUT_FORCE; - if ((err = git_checkout_head(wt, &coopts)) < 0) - goto out; - - /* Load result */ - if ((err = git_worktree_lookup(out, repo, name)) < 0) - goto out; - -out: - git_buf_dispose(&gitdir); - git_buf_dispose(&wddir); - git_buf_dispose(&buf); - git_reference_free(ref); - git_reference_free(head); - git_commit_free(commit); - git_repository_free(wt); - - return err; -} - -int git_worktree_lock(git_worktree *wt, const char *reason) -{ - git_buf buf = GIT_BUF_INIT, path = GIT_BUF_INIT; - int error; - - GIT_ASSERT_ARG(wt); - - if ((error = git_worktree_is_locked(NULL, wt)) < 0) - goto out; - if (error) { - error = GIT_ELOCKED; - goto out; - } - - if ((error = git_buf_joinpath(&path, wt->gitdir_path, "locked")) < 0) - goto out; - - if (reason) - git_buf_attach_notowned(&buf, reason, strlen(reason)); - - if ((error = git_futils_writebuffer(&buf, path.ptr, O_CREAT|O_EXCL|O_WRONLY, 0644)) < 0) - goto out; - - wt->locked = 1; - -out: - git_buf_dispose(&path); - - return error; -} - -int git_worktree_unlock(git_worktree *wt) -{ - git_buf path = GIT_BUF_INIT; - int error; - - GIT_ASSERT_ARG(wt); - - if ((error = git_worktree_is_locked(NULL, wt)) < 0) - return error; - if (!error) - return 1; - - if (git_buf_joinpath(&path, wt->gitdir_path, "locked") < 0) - return -1; - - if (p_unlink(path.ptr) != 0) { - git_buf_dispose(&path); - return -1; - } - - wt->locked = 0; - - git_buf_dispose(&path); - - return 0; -} - -int git_worktree_is_locked(git_buf *reason, const git_worktree *wt) -{ - git_buf path = GIT_BUF_INIT; - int error, locked; - - GIT_ASSERT_ARG(wt); - - if (reason) - git_buf_clear(reason); - - if ((error = git_buf_joinpath(&path, wt->gitdir_path, "locked")) < 0) - goto out; - locked = git_path_exists(path.ptr); - if (locked && reason && - (error = git_futils_readbuffer(reason, path.ptr)) < 0) - goto out; - - error = locked; -out: - git_buf_dispose(&path); - - return error; -} - -const char *git_worktree_name(const git_worktree *wt) -{ - GIT_ASSERT_ARG_WITH_RETVAL(wt, NULL); - return wt->name; -} - -const char *git_worktree_path(const git_worktree *wt) -{ - GIT_ASSERT_ARG_WITH_RETVAL(wt, NULL); - return wt->worktree_path; -} - -int git_worktree_prune_options_init( - git_worktree_prune_options *opts, - unsigned int version) -{ - GIT_INIT_STRUCTURE_FROM_TEMPLATE(opts, version, - git_worktree_prune_options, GIT_WORKTREE_PRUNE_OPTIONS_INIT); - return 0; -} - -#ifndef GIT_DEPRECATE_HARD -int git_worktree_prune_init_options(git_worktree_prune_options *opts, - unsigned int version) -{ - return git_worktree_prune_options_init(opts, version); -} -#endif - -int git_worktree_is_prunable(git_worktree *wt, - git_worktree_prune_options *opts) -{ - git_worktree_prune_options popts = GIT_WORKTREE_PRUNE_OPTIONS_INIT; - - GIT_ERROR_CHECK_VERSION( - opts, GIT_WORKTREE_PRUNE_OPTIONS_VERSION, - "git_worktree_prune_options"); - - if (opts) - memcpy(&popts, opts, sizeof(popts)); - - if ((popts.flags & GIT_WORKTREE_PRUNE_LOCKED) == 0) { - git_buf reason = GIT_BUF_INIT; - int error; - - if ((error = git_worktree_is_locked(&reason, wt)) < 0) - return error; - - if (error) { - if (!reason.size) - git_buf_attach_notowned(&reason, "no reason given", 15); - git_error_set(GIT_ERROR_WORKTREE, "not pruning locked working tree: '%s'", reason.ptr); - git_buf_dispose(&reason); - return 0; - } - } - - if ((popts.flags & GIT_WORKTREE_PRUNE_VALID) == 0 && - git_worktree_validate(wt) == 0) { - git_error_set(GIT_ERROR_WORKTREE, "not pruning valid working tree"); - return 0; - } - - return 1; -} - -int git_worktree_prune(git_worktree *wt, - git_worktree_prune_options *opts) -{ - git_worktree_prune_options popts = GIT_WORKTREE_PRUNE_OPTIONS_INIT; - git_buf path = GIT_BUF_INIT; - char *wtpath; - int err; - - GIT_ERROR_CHECK_VERSION( - opts, GIT_WORKTREE_PRUNE_OPTIONS_VERSION, - "git_worktree_prune_options"); - - if (opts) - memcpy(&popts, opts, sizeof(popts)); - - if (!git_worktree_is_prunable(wt, &popts)) { - err = -1; - goto out; - } - - /* Delete gitdir in parent repository */ - if ((err = git_buf_join3(&path, '/', wt->commondir_path, "worktrees", wt->name)) < 0) - goto out; - if (!git_path_exists(path.ptr)) - { - git_error_set(GIT_ERROR_WORKTREE, "worktree gitdir '%s' does not exist", path.ptr); - err = -1; - goto out; - } - if ((err = git_futils_rmdir_r(path.ptr, NULL, GIT_RMDIR_REMOVE_FILES)) < 0) - goto out; - - /* Skip deletion of the actual working tree if it does - * not exist or deletion was not requested */ - if ((popts.flags & GIT_WORKTREE_PRUNE_WORKING_TREE) == 0 || - !git_path_exists(wt->gitlink_path)) - { - goto out; - } - - if ((wtpath = git_path_dirname(wt->gitlink_path)) == NULL) - goto out; - git_buf_attach(&path, wtpath, 0); - if (!git_path_exists(path.ptr)) - { - git_error_set(GIT_ERROR_WORKTREE, "working tree '%s' does not exist", path.ptr); - err = -1; - goto out; - } - if ((err = git_futils_rmdir_r(path.ptr, NULL, GIT_RMDIR_REMOVE_FILES)) < 0) - goto out; - -out: - git_buf_dispose(&path); - - return err; -} |