diff options
Diffstat (limited to 'builtin/checkout.c')
| -rw-r--r-- | builtin/checkout.c | 462 |
1 files changed, 280 insertions, 182 deletions
diff --git a/builtin/checkout.c b/builtin/checkout.c index f1984d9933..7025938ae3 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -22,22 +22,20 @@ #include "argv-array.h" static const char * const checkout_usage[] = { - "git checkout [options] <branch>", - "git checkout [options] [<branch>] -- <file>...", + N_("git checkout [options] <branch>"), + N_("git checkout [options] [<branch>] -- <file>..."), NULL, }; struct checkout_opts { + int patch_mode; int quiet; int merge; int force; int force_detach; int writeout_stage; - int writeout_error; int overwrite_ignore; - - /* not set by parse_options */ - int branch_exists; + int ignore_skipworktree; const char *new_branch; const char *new_branch_force; @@ -45,6 +43,11 @@ struct checkout_opts { int new_branch_log; enum branch_track track; struct diff_options diff_options; + + int branch_exists; + const char *prefix; + const char **pathspec; + struct tree *source_tree; }; static int post_checkout_hook(struct commit *old, struct commit *new, @@ -73,7 +76,8 @@ static int update_some(const unsigned char *sha1, const char *base, int baselen, hashcpy(ce->sha1, sha1); memcpy(ce->name, base, baselen); memcpy(ce->name + baselen, pathname, len - baselen); - ce->ce_flags = create_ce_flags(len, 0) | CE_UPDATE; + ce->ce_flags = create_ce_flags(0) | CE_UPDATE; + ce->ce_namelen = len; ce->ce_mode = create_ce_mode(mode); add_cache_entry(ce, ADD_CACHE_OK_TO_ADD | ADD_CACHE_OK_TO_REPLACE); return 0; @@ -93,7 +97,7 @@ static int read_tree_some(struct tree *tree, const char **pathspec) return 0; } -static int skip_same_name(struct cache_entry *ce, int pos) +static int skip_same_name(const struct cache_entry *ce, int pos) { while (++pos < active_nr && !strcmp(active_cache[pos]->name, ce->name)) @@ -101,7 +105,7 @@ static int skip_same_name(struct cache_entry *ce, int pos) return pos; } -static int check_stage(int stage, struct cache_entry *ce, int pos) +static int check_stage(int stage, const struct cache_entry *ce, int pos) { while (pos < active_nr && !strcmp(active_cache[pos]->name, ce->name)) { @@ -115,7 +119,7 @@ static int check_stage(int stage, struct cache_entry *ce, int pos) return error(_("path '%s' does not have their version"), ce->name); } -static int check_stages(unsigned stages, struct cache_entry *ce, int pos) +static int check_stages(unsigned stages, const struct cache_entry *ce, int pos) { unsigned seen = 0; const char *name = ce->name; @@ -214,8 +218,8 @@ static int checkout_merged(int pos, struct checkout *state) return status; } -static int checkout_paths(struct tree *source_tree, const char **pathspec, - const char *prefix, struct checkout_opts *opts) +static int checkout_paths(const struct checkout_opts *opts, + const char *revision) { int pos; struct checkout state; @@ -227,37 +231,98 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec, int stage = opts->writeout_stage; int merge = opts->merge; int newfd; - struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); + struct lock_file *lock_file; + + if (opts->track != BRANCH_TRACK_UNSPECIFIED) + die(_("'%s' cannot be used with updating paths"), "--track"); + + if (opts->new_branch_log) + die(_("'%s' cannot be used with updating paths"), "-l"); + + if (opts->force && opts->patch_mode) + die(_("'%s' cannot be used with updating paths"), "-f"); + + if (opts->force_detach) + die(_("'%s' cannot be used with updating paths"), "--detach"); + + if (opts->merge && opts->patch_mode) + die(_("'%s' cannot be used with %s"), "--merge", "--patch"); + + if (opts->force && opts->merge) + die(_("'%s' cannot be used with %s"), "-f", "-m"); + + if (opts->new_branch) + die(_("Cannot update paths and switch to branch '%s' at the same time."), + opts->new_branch); + + if (opts->patch_mode) + return run_add_interactive(revision, "--patch=checkout", + opts->pathspec); + + lock_file = xcalloc(1, sizeof(struct lock_file)); newfd = hold_locked_index(lock_file, 1); - if (read_cache_preload(pathspec) < 0) + if (read_cache_preload(opts->pathspec) < 0) return error(_("corrupt index file")); - if (source_tree) - read_tree_some(source_tree, pathspec); + if (opts->source_tree) + read_tree_some(opts->source_tree, opts->pathspec); - for (pos = 0; pathspec[pos]; pos++) + for (pos = 0; opts->pathspec[pos]; pos++) ; ps_matched = xcalloc(1, pos); + /* + * Make sure all pathspecs participated in locating the paths + * to be checked out. + */ for (pos = 0; pos < active_nr; pos++) { struct cache_entry *ce = active_cache[pos]; - if (source_tree && !(ce->ce_flags & CE_UPDATE)) + ce->ce_flags &= ~CE_MATCHED; + if (!opts->ignore_skipworktree && ce_skip_worktree(ce)) + continue; + if (opts->source_tree && !(ce->ce_flags & CE_UPDATE)) + /* + * "git checkout tree-ish -- path", but this entry + * is in the original index; it will not be checked + * out to the working tree and it does not matter + * if pathspec matched this entry. We will not do + * anything to this entry at all. + */ continue; - match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, ps_matched); + /* + * Either this entry came from the tree-ish we are + * checking the paths out of, or we are checking out + * of the index. + * + * If it comes from the tree-ish, we already know it + * matches the pathspec and could just stamp + * CE_MATCHED to it from update_some(). But we still + * need ps_matched and read_tree_recursive (and + * eventually tree_entry_interesting) cannot fill + * ps_matched yet. Once it can, we can avoid calling + * match_pathspec() for _all_ entries when + * opts->source_tree != NULL. + */ + if (match_pathspec(opts->pathspec, ce->name, ce_namelen(ce), + 0, ps_matched)) + ce->ce_flags |= CE_MATCHED; } - if (report_path_error(ps_matched, pathspec, prefix)) + if (report_path_error(ps_matched, opts->pathspec, opts->prefix)) { + free(ps_matched); return 1; + } + free(ps_matched); /* "checkout -m path" to recreate conflicted state */ if (opts->merge) - unmerge_cache(pathspec); + unmerge_marked_index(&the_index); /* Any unmerged paths? */ for (pos = 0; pos < active_nr; pos++) { - struct cache_entry *ce = active_cache[pos]; - if (match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, NULL)) { + const struct cache_entry *ce = active_cache[pos]; + if (ce->ce_flags & CE_MATCHED) { if (!ce_stage(ce)) continue; if (opts->force) { @@ -282,9 +347,7 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec, state.refresh_cache = 1; for (pos = 0; pos < active_nr; pos++) { struct cache_entry *ce = active_cache[pos]; - if (source_tree && !(ce->ce_flags & CE_UPDATE)) - continue; - if (match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, NULL)) { + if (ce->ce_flags & CE_MATCHED) { if (!ce_stage(ce)) { errs |= checkout_entry(ce, &state, NULL); continue; @@ -308,15 +371,15 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec, return errs; } -static void show_local_changes(struct object *head, struct diff_options *opts) +static void show_local_changes(struct object *head, + const struct diff_options *opts) { struct rev_info rev; /* I think we want full paths, even if we're in a subdirectory. */ init_revisions(&rev, NULL); rev.diffopt.flags = opts->flags; rev.diffopt.output_format |= DIFF_FORMAT_NAME_STATUS; - if (diff_setup_done(&rev.diffopt) < 0) - die(_("diff_setup_done failed")); + diff_setup_done(&rev.diffopt); add_pending_object(&rev, head, NULL); run_diff_index(&rev, 0); } @@ -331,7 +394,8 @@ static void describe_detached_head(const char *msg, struct commit *commit) strbuf_release(&sb); } -static int reset_tree(struct tree *tree, struct checkout_opts *o, int worktree) +static int reset_tree(struct tree *tree, const struct checkout_opts *o, + int worktree, int *writeout_error) { struct unpack_trees_options opts; struct tree_desc tree_desc; @@ -343,14 +407,14 @@ static int reset_tree(struct tree *tree, struct checkout_opts *o, int worktree) opts.reset = 1; opts.merge = 1; opts.fn = oneway_merge; - opts.verbose_update = !o->quiet; + opts.verbose_update = !o->quiet && isatty(2); opts.src_index = &the_index; opts.dst_index = &the_index; parse_tree(tree); init_tree_desc(&tree_desc, tree->buffer, tree->size); switch (unpack_trees(1, &tree_desc, &opts)) { case -2: - o->writeout_error = 1; + *writeout_error = 1; /* * We return 0 nevertheless, as the index is all right * and more importantly we have made best efforts to @@ -381,8 +445,10 @@ static void setup_branch_path(struct branch_info *branch) branch->path = strbuf_detach(&buf, NULL); } -static int merge_working_tree(struct checkout_opts *opts, - struct branch_info *old, struct branch_info *new) +static int merge_working_tree(const struct checkout_opts *opts, + struct branch_info *old, + struct branch_info *new, + int *writeout_error) { int ret; struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); @@ -393,7 +459,7 @@ static int merge_working_tree(struct checkout_opts *opts, resolve_undo_clear(); if (opts->force) { - ret = reset_tree(new->commit->tree, opts, 1); + ret = reset_tree(new->commit->tree, opts, 1, writeout_error); if (ret) return ret; } else { @@ -420,7 +486,7 @@ static int merge_working_tree(struct checkout_opts *opts, topts.update = 1; topts.merge = 1; topts.gently = opts->merge && old->commit; - topts.verbose_update = !opts->quiet; + topts.verbose_update = !opts->quiet && isatty(2); topts.fn = twoway_merge; if (opts->overwrite_ignore) { topts.dir = xcalloc(1, sizeof(*topts.dir)); @@ -479,7 +545,8 @@ static int merge_working_tree(struct checkout_opts *opts, o.verbosity = 0; work = write_tree_from_memory(&o); - ret = reset_tree(new->commit->tree, opts, 1); + ret = reset_tree(new->commit->tree, opts, 1, + writeout_error); if (ret) return ret; o.ancestor = old->name; @@ -487,7 +554,8 @@ static int merge_working_tree(struct checkout_opts *opts, o.branch2 = "local"; merge_trees(&o, new->commit->tree, work, old->commit->tree, &result); - ret = reset_tree(new->commit->tree, opts, 0); + ret = reset_tree(new->commit->tree, opts, 0, + writeout_error); if (ret) return ret; } @@ -514,26 +582,12 @@ static void report_tracking(struct branch_info *new) strbuf_release(&sb); } -static void detach_advice(const char *old_path, const char *new_name) -{ - const char fmt[] = - "Note: checking out '%s'.\n\n" - "You are in 'detached HEAD' state. You can look around, make experimental\n" - "changes and commit them, and you can discard any commits you make in this\n" - "state without impacting any branches by performing another checkout.\n\n" - "If you want to create a new branch to retain commits you create, you may\n" - "do so (now or later) by using -b with the checkout command again. Example:\n\n" - " git checkout -b new_branch_name\n\n"; - - fprintf(stderr, fmt, new_name); -} - -static void update_refs_for_switch(struct checkout_opts *opts, +static void update_refs_for_switch(const struct checkout_opts *opts, struct branch_info *old, struct branch_info *new) { struct strbuf msg = STRBUF_INIT; - const char *old_desc; + const char *old_desc, *reflog_msg; if (opts->new_branch) { if (opts->new_orphan_branch) { if (opts->new_branch_log && !log_all_ref_updates) { @@ -557,6 +611,7 @@ static void update_refs_for_switch(struct checkout_opts *opts, opts->new_branch_force ? 1 : 0, opts->new_branch_log, opts->new_branch_force ? 1 : 0, + opts->quiet, opts->track); new->name = opts->new_branch; setup_branch_path(new); @@ -565,8 +620,13 @@ static void update_refs_for_switch(struct checkout_opts *opts, old_desc = old->name; if (!old_desc && old->commit) old_desc = sha1_to_hex(old->commit->object.sha1); - strbuf_addf(&msg, "checkout: moving from %s to %s", - old_desc ? old_desc : "(invalid)", new->name); + + reflog_msg = getenv("GIT_REFLOG_ACTION"); + if (!reflog_msg) + strbuf_addf(&msg, "checkout: moving from %s to %s", + old_desc ? old_desc : "(invalid)", new->name); + else + strbuf_insert(&msg, 0, reflog_msg, strlen(reflog_msg)); if (!strcmp(new->name, "HEAD") && !new->path && !opts->force_detach) { /* Nothing to do. */ @@ -575,7 +635,7 @@ static void update_refs_for_switch(struct checkout_opts *opts, REF_NODEREF, DIE_ON_ERR); if (!opts->quiet) { if (old->path && advice_detached_head) - detach_advice(old->path, new->name); + detach_advice(new->name); describe_detached_head(_("HEAD is now at"), new->commit); } } else if (new->path) { /* Switch branches. */ @@ -618,7 +678,7 @@ static int add_pending_uninteresting_ref(const char *refname, const unsigned char *sha1, int flags, void *cb_data) { - add_pending_sha1(cb_data, refname, sha1, flags | UNINTERESTING); + add_pending_sha1(cb_data, refname, sha1, UNINTERESTING); return 0; } @@ -677,7 +737,7 @@ static void suggest_reattach(struct commit *commit, struct rev_info *revs) "If you want to keep them by creating a new branch, " "this may be a good time\nto do so with:\n\n" " git branch new_branch_name %s\n\n"), - sha1_to_hex(commit->object.sha1)); + find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV)); } /* @@ -685,10 +745,10 @@ static void suggest_reattach(struct commit *commit, struct rev_info *revs) * HEAD. If it is not reachable from any ref, this is the last chance * for the user to do so without resorting to reflog. */ -static void orphaned_commit_warning(struct commit *commit) +static void orphaned_commit_warning(struct commit *old, struct commit *new) { struct rev_info revs; - struct object *object = &commit->object; + struct object *object = &old->object; struct object_array refs; init_revisions(&revs, NULL); @@ -698,28 +758,30 @@ static void orphaned_commit_warning(struct commit *commit) add_pending_object(&revs, object, sha1_to_hex(object->sha1)); for_each_ref(add_pending_uninteresting_ref, &revs); + add_pending_sha1(&revs, "HEAD", new->object.sha1, UNINTERESTING); refs = revs.pending; revs.leak_pending = 1; if (prepare_revision_walk(&revs)) die(_("internal error in revision walk")); - if (!(commit->object.flags & UNINTERESTING)) - suggest_reattach(commit, &revs); + if (!(old->object.flags & UNINTERESTING)) + suggest_reattach(old, &revs); else - describe_detached_head(_("Previous HEAD position was"), commit); + describe_detached_head(_("Previous HEAD position was"), old); clear_commit_marks_for_object_array(&refs, ALL_REV_FLAGS); free(refs.objects); } -static int switch_branches(struct checkout_opts *opts, struct branch_info *new) +static int switch_branches(const struct checkout_opts *opts, + struct branch_info *new) { int ret = 0; struct branch_info old; void *path_to_free; unsigned char rev[20]; - int flag; + int flag, writeout_error = 0; memset(&old, 0, sizeof(old)); old.path = path_to_free = resolve_refdup("HEAD", rev, 0, &flag); old.commit = lookup_commit_reference_gently(rev, 1); @@ -737,20 +799,20 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new) parse_commit(new->commit); } - ret = merge_working_tree(opts, &old, new); + ret = merge_working_tree(opts, &old, new, &writeout_error); if (ret) { free(path_to_free); return ret; } if (!opts->quiet && !old.path && old.commit && new->commit != old.commit) - orphaned_commit_warning(old.commit); + orphaned_commit_warning(old.commit, new->commit); update_refs_for_switch(opts, &old, new); ret = post_checkout_hook(old.commit, new->commit, 1); free(path_to_free); - return ret || opts->writeout_error; + return ret || writeout_error; } static int git_checkout_config(const char *var, const char *value, void *cb) @@ -767,45 +829,44 @@ static int git_checkout_config(const char *var, const char *value, void *cb) return git_xmerge_config(var, value, NULL); } -static int interactive_checkout(const char *revision, const char **pathspec, - struct checkout_opts *opts) -{ - return run_add_interactive(revision, "--patch=checkout", pathspec); -} - struct tracking_name_data { - const char *name; - char *remote; + /* const */ char *src_ref; + char *dst_ref; + unsigned char *dst_sha1; int unique; }; -static int check_tracking_name(const char *refname, const unsigned char *sha1, - int flags, void *cb_data) +static int check_tracking_name(struct remote *remote, void *cb_data) { struct tracking_name_data *cb = cb_data; - const char *slash; - - if (prefixcmp(refname, "refs/remotes/")) + struct refspec query; + memset(&query, 0, sizeof(struct refspec)); + query.src = cb->src_ref; + if (remote_find_tracking(remote, &query) || + get_sha1(query.dst, cb->dst_sha1)) { + free(query.dst); return 0; - slash = strchr(refname + 13, '/'); - if (!slash || strcmp(slash + 1, cb->name)) - return 0; - if (cb->remote) { + } + if (cb->dst_ref) { + free(query.dst); cb->unique = 0; return 0; } - cb->remote = xstrdup(refname); + cb->dst_ref = query.dst; return 0; } -static const char *unique_tracking_name(const char *name) +static const char *unique_tracking_name(const char *name, unsigned char *sha1) { - struct tracking_name_data cb_data = { NULL, NULL, 1 }; - cb_data.name = name; - for_each_ref(check_tracking_name, &cb_data); + struct tracking_name_data cb_data = { NULL, NULL, NULL, 1 }; + char src_ref[PATH_MAX]; + snprintf(src_ref, PATH_MAX, "refs/heads/%s", name); + cb_data.src_ref = src_ref; + cb_data.dst_sha1 = sha1; + for_each_remote(check_tracking_name, &cb_data); if (cb_data.unique) - return cb_data.remote; - free(cb_data.remote); + return cb_data.dst_ref; + free(cb_data.dst_ref); return NULL; } @@ -868,8 +929,8 @@ static int parse_branchname_arg(int argc, const char **argv, if (dwim_new_local_branch_ok && !check_filename(NULL, arg) && argc == 1) { - const char *remote = unique_tracking_name(arg); - if (!remote || get_sha1(remote, rev)) + const char *remote = unique_tracking_name(arg, rev); + if (!remote) return argcount; *new_branch = arg; arg = remote; @@ -922,38 +983,98 @@ static int parse_branchname_arg(int argc, const char **argv, return argcount; } +static int switch_unborn_to_new_branch(const struct checkout_opts *opts) +{ + int status; + struct strbuf branch_ref = STRBUF_INIT; + + if (!opts->new_branch) + die(_("You are on a branch yet to be born")); + strbuf_addf(&branch_ref, "refs/heads/%s", opts->new_branch); + status = create_symref("HEAD", branch_ref.buf, "checkout -b"); + strbuf_release(&branch_ref); + if (!opts->quiet) + fprintf(stderr, _("Switched to a new branch '%s'\n"), + opts->new_branch); + return status; +} + +static int checkout_branch(struct checkout_opts *opts, + struct branch_info *new) +{ + if (opts->pathspec) + die(_("paths cannot be used with switching branches")); + + if (opts->patch_mode) + die(_("'%s' cannot be used with switching branches"), + "--patch"); + + if (opts->writeout_stage) + die(_("'%s' cannot be used with switching branches"), + "--ours/--theirs"); + + if (opts->force && opts->merge) + die(_("'%s' cannot be used with '%s'"), "-f", "-m"); + + if (opts->force_detach && opts->new_branch) + die(_("'%s' cannot be used with '%s'"), + "--detach", "-b/-B/--orphan"); + + if (opts->new_orphan_branch) { + if (opts->track != BRANCH_TRACK_UNSPECIFIED) + die(_("'%s' cannot be used with '%s'"), "--orphan", "-t"); + } else if (opts->force_detach) { + if (opts->track != BRANCH_TRACK_UNSPECIFIED) + die(_("'%s' cannot be used with '%s'"), "--detach", "-t"); + } else if (opts->track == BRANCH_TRACK_UNSPECIFIED) + opts->track = git_branch_track; + + if (new->name && !new->commit) + die(_("Cannot switch branch to a non-commit '%s'"), + new->name); + + if (!new->commit && opts->new_branch) { + unsigned char rev[20]; + int flag; + + if (!read_ref_full("HEAD", rev, 0, &flag) && + (flag & REF_ISSYMREF) && is_null_sha1(rev)) + return switch_unborn_to_new_branch(opts); + } + return switch_branches(opts, new); +} + int cmd_checkout(int argc, const char **argv, const char *prefix) { struct checkout_opts opts; - unsigned char rev[20]; struct branch_info new; - struct tree *source_tree = NULL; char *conflict_style = NULL; - int patch_mode = 0; int dwim_new_local_branch = 1; struct option options[] = { - OPT__QUIET(&opts.quiet, "suppress progress reporting"), - OPT_STRING('b', NULL, &opts.new_branch, "branch", - "create and checkout a new branch"), - OPT_STRING('B', NULL, &opts.new_branch_force, "branch", - "create/reset and checkout a branch"), - OPT_BOOLEAN('l', NULL, &opts.new_branch_log, "create reflog for new branch"), - OPT_BOOLEAN(0, "detach", &opts.force_detach, "detach the HEAD at named commit"), - OPT_SET_INT('t', "track", &opts.track, "set upstream info for new branch", + OPT__QUIET(&opts.quiet, N_("suppress progress reporting")), + OPT_STRING('b', NULL, &opts.new_branch, N_("branch"), + N_("create and checkout a new branch")), + OPT_STRING('B', NULL, &opts.new_branch_force, N_("branch"), + N_("create/reset and checkout a branch")), + OPT_BOOLEAN('l', NULL, &opts.new_branch_log, N_("create reflog for new branch")), + OPT_BOOLEAN(0, "detach", &opts.force_detach, N_("detach the HEAD at named commit")), + OPT_SET_INT('t', "track", &opts.track, N_("set upstream info for new branch"), BRANCH_TRACK_EXPLICIT), - OPT_STRING(0, "orphan", &opts.new_orphan_branch, "new branch", "new unparented branch"), - OPT_SET_INT('2', "ours", &opts.writeout_stage, "checkout our version for unmerged files", + OPT_STRING(0, "orphan", &opts.new_orphan_branch, N_("new branch"), N_("new unparented branch")), + OPT_SET_INT('2', "ours", &opts.writeout_stage, N_("checkout our version for unmerged files"), 2), - OPT_SET_INT('3', "theirs", &opts.writeout_stage, "checkout their version for unmerged files", + OPT_SET_INT('3', "theirs", &opts.writeout_stage, N_("checkout their version for unmerged files"), 3), - OPT__FORCE(&opts.force, "force checkout (throw away local modifications)"), - OPT_BOOLEAN('m', "merge", &opts.merge, "perform a 3-way merge with the new branch"), - OPT_BOOLEAN(0, "overwrite-ignore", &opts.overwrite_ignore, "update ignored files (default)"), - OPT_STRING(0, "conflict", &conflict_style, "style", - "conflict style (merge or diff3)"), - OPT_BOOLEAN('p', "patch", &patch_mode, "select hunks interactively"), + OPT__FORCE(&opts.force, N_("force checkout (throw away local modifications)")), + OPT_BOOLEAN('m', "merge", &opts.merge, N_("perform a 3-way merge with the new branch")), + OPT_BOOLEAN(0, "overwrite-ignore", &opts.overwrite_ignore, N_("update ignored files (default)")), + OPT_STRING(0, "conflict", &conflict_style, N_("style"), + N_("conflict style (merge or diff3)")), + OPT_BOOLEAN('p', "patch", &opts.patch_mode, N_("select hunks interactively")), + OPT_BOOL(0, "ignore-skip-worktree-bits", &opts.ignore_skipworktree, + N_("do not limit pathspecs to sparse entries only")), { OPTION_BOOLEAN, 0, "guess", &dwim_new_local_branch, NULL, - "second guess 'git checkout no-such-branch'", + N_("second guess 'git checkout no-such-branch'"), PARSE_OPT_NOARG | PARSE_OPT_HIDDEN }, OPT_END(), }; @@ -961,6 +1082,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) memset(&opts, 0, sizeof(opts)); memset(&new, 0, sizeof(new)); opts.overwrite_ignore = 1; + opts.prefix = prefix; gitmodules_config(); git_config(git_checkout_config, &opts); @@ -970,26 +1092,27 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) argc = parse_options(argc, argv, prefix, options, checkout_usage, PARSE_OPT_KEEP_DASHDASH); - /* we can assume from now on new_branch = !new_branch_force */ - if (opts.new_branch && opts.new_branch_force) - die(_("-B cannot be used with -b")); + if (conflict_style) { + opts.merge = 1; /* implied */ + git_xmerge_config("merge.conflictstyle", conflict_style, NULL); + } + + if ((!!opts.new_branch + !!opts.new_branch_force + !!opts.new_orphan_branch) > 1) + die(_("-b, -B and --orphan are mutually exclusive")); - /* copy -B over to -b, so that we can just check the latter */ + /* + * From here on, new_branch will contain the branch to be checked out, + * and new_branch_force and new_orphan_branch will tell us which one of + * -b/-B/--orphan is being used. + */ if (opts.new_branch_force) opts.new_branch = opts.new_branch_force; - if (patch_mode && (opts.track > 0 || opts.new_branch - || opts.new_branch_log || opts.merge || opts.force - || opts.force_detach)) - die (_("--patch is incompatible with all other options")); - - if (opts.force_detach && (opts.new_branch || opts.new_orphan_branch)) - die(_("--detach cannot be used with -b/-B/--orphan")); - if (opts.force_detach && 0 < opts.track) - die(_("--detach cannot be used with -t")); + if (opts.new_orphan_branch) + opts.new_branch = opts.new_orphan_branch; - /* --track without -b should DWIM */ - if (0 < opts.track && !opts.new_branch) { + /* --track without -b/-B/--orphan should DWIM */ + if (opts.track != BRANCH_TRACK_UNSPECIFIED && !opts.new_branch) { const char *argv0 = argv[0]; if (!argc || !strcmp(argv0, "--")) die (_("--track needs a branch name")); @@ -1003,22 +1126,6 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) opts.new_branch = argv0 + 1; } - if (opts.new_orphan_branch) { - if (opts.new_branch) - die(_("--orphan and -b|-B are mutually exclusive")); - if (opts.track > 0) - die(_("--orphan cannot be used with -t")); - opts.new_branch = opts.new_orphan_branch; - } - - if (conflict_style) { - opts.merge = 1; /* implied */ - git_xmerge_config("merge.conflictstyle", conflict_style, NULL); - } - - if (opts.force && opts.merge) - die(_("git checkout: -f and -m are incompatible")); - /* * Extract branch name from command line arguments, so * all that is left is pathspecs. @@ -1033,65 +1140,56 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) * remote branches, erroring out for invalid or ambiguous cases. */ if (argc) { + unsigned char rev[20]; int dwim_ok = - !patch_mode && + !opts.patch_mode && dwim_new_local_branch && opts.track == BRANCH_TRACK_UNSPECIFIED && !opts.new_branch; int n = parse_branchname_arg(argc, argv, dwim_ok, - &new, &source_tree, rev, &opts.new_branch); + &new, &opts.source_tree, + rev, &opts.new_branch); argv += n; argc -= n; } - if (opts.track == BRANCH_TRACK_UNSPECIFIED) - opts.track = git_branch_track; - if (argc) { - const char **pathspec = get_pathspec(prefix, argv); + opts.pathspec = get_pathspec(prefix, argv); - if (!pathspec) + if (!opts.pathspec) die(_("invalid path specification")); - if (patch_mode) - return interactive_checkout(new.name, pathspec, &opts); - - /* Checkout paths */ - if (opts.new_branch) { - if (argc == 1) { - die(_("git checkout: updating paths is incompatible with switching branches.\nDid you intend to checkout '%s' which can not be resolved as commit?"), argv[0]); - } else { - die(_("git checkout: updating paths is incompatible with switching branches.")); - } - } + /* + * Try to give more helpful suggestion. + * new_branch && argc > 1 will be caught later. + */ + if (opts.new_branch && argc == 1) + die(_("Cannot update paths and switch to branch '%s' at the same time.\n" + "Did you intend to checkout '%s' which can not be resolved as commit?"), + opts.new_branch, argv[0]); if (opts.force_detach) - die(_("git checkout: --detach does not take a path argument")); + die(_("git checkout: --detach does not take a path argument '%s'"), + argv[0]); if (1 < !!opts.writeout_stage + !!opts.force + !!opts.merge) - die(_("git checkout: --ours/--theirs, --force and --merge are incompatible when\nchecking out of the index.")); - - return checkout_paths(source_tree, pathspec, prefix, &opts); + die(_("git checkout: --ours/--theirs, --force and --merge are incompatible when\n" + "checking out of the index.")); } - if (patch_mode) - return interactive_checkout(new.name, NULL, &opts); - if (opts.new_branch) { struct strbuf buf = STRBUF_INIT; - opts.branch_exists = validate_new_branchname(opts.new_branch, &buf, - !!opts.new_branch_force, - !!opts.new_branch_force); + opts.branch_exists = + validate_new_branchname(opts.new_branch, &buf, + !!opts.new_branch_force, + !!opts.new_branch_force); strbuf_release(&buf); } - if (new.name && !new.commit) { - die(_("Cannot switch branch to a non-commit.")); - } - if (opts.writeout_stage) - die(_("--ours/--theirs is incompatible with switching branches.")); - - return switch_branches(&opts, &new); + if (opts.patch_mode || opts.pathspec) + return checkout_paths(&opts, new.name); + else + return checkout_branch(&opts, &new); } |