diff options
| -rw-r--r-- | branch.c | 67 | ||||
| -rw-r--r-- | branch.h | 7 | ||||
| -rw-r--r-- | builtin/checkout.c | 67 |
3 files changed, 74 insertions, 67 deletions
@@ -309,3 +309,70 @@ void remove_branch_state(void) unlink(git_path("MERGE_MODE")); unlink(git_path("SQUASH_MSG")); } + +static void check_linked_checkout(const char *branch, const char *id) +{ + struct strbuf sb = STRBUF_INIT; + struct strbuf path = STRBUF_INIT; + struct strbuf gitdir = STRBUF_INIT; + + /* + * $GIT_COMMON_DIR/HEAD is practically outside + * $GIT_DIR so resolve_ref_unsafe() won't work (it + * uses git_path). Parse the ref ourselves. + */ + if (id) + strbuf_addf(&path, "%s/worktrees/%s/HEAD", get_git_common_dir(), id); + else + strbuf_addf(&path, "%s/HEAD", get_git_common_dir()); + + if (!strbuf_readlink(&sb, path.buf, 0)) { + if (!starts_with(sb.buf, "refs/") || + check_refname_format(sb.buf, 0)) + goto done; + } else if (strbuf_read_file(&sb, path.buf, 0) >= 0 && + starts_with(sb.buf, "ref:")) { + strbuf_remove(&sb, 0, strlen("ref:")); + strbuf_trim(&sb); + } else + goto done; + if (strcmp(sb.buf, branch)) + goto done; + if (id) { + strbuf_reset(&path); + strbuf_addf(&path, "%s/worktrees/%s/gitdir", get_git_common_dir(), id); + if (strbuf_read_file(&gitdir, path.buf, 0) <= 0) + goto done; + strbuf_rtrim(&gitdir); + } else + strbuf_addstr(&gitdir, get_git_common_dir()); + skip_prefix(branch, "refs/heads/", &branch); + strbuf_strip_suffix(&gitdir, ".git"); + die(_("'%s' is already checked out at '%s'"), branch, gitdir.buf); +done: + strbuf_release(&path); + strbuf_release(&sb); + strbuf_release(&gitdir); +} + +void die_if_checked_out(const char *branch) +{ + struct strbuf path = STRBUF_INIT; + DIR *dir; + struct dirent *d; + + check_linked_checkout(branch, NULL); + + strbuf_addf(&path, "%s/worktrees", get_git_common_dir()); + dir = opendir(path.buf); + strbuf_release(&path); + if (!dir) + return; + + while ((d = readdir(dir)) != NULL) { + if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, "..")) + continue; + check_linked_checkout(branch, d->d_name); + } + closedir(dir); +} @@ -52,4 +52,11 @@ extern void install_branch_config(int flag, const char *local, const char *origi */ extern int read_branch_desc(struct strbuf *, const char *branch_name); +/* + * Check if a branch is checked out in the main worktree or any linked + * worktree and die (with a message describing its checkout location) if + * it is. + */ +extern void die_if_checked_out(const char *branch); + #endif diff --git a/builtin/checkout.c b/builtin/checkout.c index f04dcaaf1f..4ae895ca94 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -873,73 +873,6 @@ static const char *unique_tracking_name(const char *name, unsigned char *sha1) return NULL; } -static void check_linked_checkout(const char *branch, const char *id) -{ - struct strbuf sb = STRBUF_INIT; - struct strbuf path = STRBUF_INIT; - struct strbuf gitdir = STRBUF_INIT; - - /* - * $GIT_COMMON_DIR/HEAD is practically outside - * $GIT_DIR so resolve_ref_unsafe() won't work (it - * uses git_path). Parse the ref ourselves. - */ - if (id) - strbuf_addf(&path, "%s/worktrees/%s/HEAD", get_git_common_dir(), id); - else - strbuf_addf(&path, "%s/HEAD", get_git_common_dir()); - - if (!strbuf_readlink(&sb, path.buf, 0)) { - if (!starts_with(sb.buf, "refs/") || - check_refname_format(sb.buf, 0)) - goto done; - } else if (strbuf_read_file(&sb, path.buf, 0) >= 0 && - starts_with(sb.buf, "ref:")) { - strbuf_remove(&sb, 0, strlen("ref:")); - strbuf_trim(&sb); - } else - goto done; - if (strcmp(sb.buf, branch)) - goto done; - if (id) { - strbuf_reset(&path); - strbuf_addf(&path, "%s/worktrees/%s/gitdir", get_git_common_dir(), id); - if (strbuf_read_file(&gitdir, path.buf, 0) <= 0) - goto done; - strbuf_rtrim(&gitdir); - } else - strbuf_addstr(&gitdir, get_git_common_dir()); - skip_prefix(branch, "refs/heads/", &branch); - strbuf_strip_suffix(&gitdir, ".git"); - die(_("'%s' is already checked out at '%s'"), branch, gitdir.buf); -done: - strbuf_release(&path); - strbuf_release(&sb); - strbuf_release(&gitdir); -} - -static void die_if_checked_out(const char *branch) -{ - struct strbuf path = STRBUF_INIT; - DIR *dir; - struct dirent *d; - - check_linked_checkout(branch, NULL); - - strbuf_addf(&path, "%s/worktrees", get_git_common_dir()); - dir = opendir(path.buf); - strbuf_release(&path); - if (!dir) - return; - - while ((d = readdir(dir)) != NULL) { - if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, "..")) - continue; - check_linked_checkout(branch, d->d_name); - } - closedir(dir); -} - static int parse_branchname_arg(int argc, const char **argv, int dwim_new_local_branch_ok, struct branch_info *new, |