diff options
Diffstat (limited to 'builtin/checkout.c')
| -rw-r--r-- | builtin/checkout.c | 539 |
1 files changed, 300 insertions, 239 deletions
diff --git a/builtin/checkout.c b/builtin/checkout.c index 28cdc51b85..a9c1b5a95f 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -19,23 +19,22 @@ #include "ll-merge.h" #include "resolve-undo.h" #include "submodule.h" +#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; - - /* not set by parse_options */ - int branch_exists; + int overwrite_ignore; const char *new_branch; const char *new_branch_force; @@ -43,6 +42,11 @@ 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, @@ -71,7 +75,8 @@ 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->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; @@ -113,16 +118,21 @@ 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_all_stages(struct cache_entry *ce, int pos) +static int check_stages(unsigned stages, struct cache_entry *ce, int pos) { - if (ce_stage(ce) != 1 || - active_nr <= pos + 2 || - strcmp(active_cache[pos+1]->name, ce->name) || - ce_stage(active_cache[pos+1]) != 2 || - strcmp(active_cache[pos+2]->name, ce->name) || - ce_stage(active_cache[pos+2]) != 3) - return error(_("path '%s' does not have all three versions"), - ce->name); + unsigned seen = 0; + const char *name = ce->name; + + while (pos < active_nr) { + ce = active_cache[pos]; + if (strcmp(name, ce->name)) + break; + seen |= (1 << ce_stage(ce)); + pos++; + } + if ((stages & seen) != stages) + return error(_("path '%s' does not have all necessary versions"), + name); return 0; } @@ -149,18 +159,27 @@ static int checkout_merged(int pos, struct checkout *state) int status; unsigned char sha1[20]; mmbuffer_t result_buf; + unsigned char threeway[3][20]; + unsigned mode = 0; + + memset(threeway, 0, sizeof(threeway)); + while (pos < active_nr) { + int stage; + stage = ce_stage(ce); + if (!stage || strcmp(path, ce->name)) + break; + hashcpy(threeway[stage - 1], ce->sha1); + if (stage == 2) + mode = create_ce_mode(ce->ce_mode); + pos++; + ce = active_cache[pos]; + } + if (is_null_sha1(threeway[1]) || is_null_sha1(threeway[2])) + return error(_("path '%s' does not have necessary versions"), path); - if (ce_stage(ce) != 1 || - active_nr <= pos + 2 || - strcmp(active_cache[pos+1]->name, path) || - ce_stage(active_cache[pos+1]) != 2 || - strcmp(active_cache[pos+2]->name, path) || - ce_stage(active_cache[pos+2]) != 3) - return error(_("path '%s' does not have all 3 versions"), path); - - read_mmblob(&ancestor, active_cache[pos]->sha1); - read_mmblob(&ours, active_cache[pos+1]->sha1); - read_mmblob(&theirs, active_cache[pos+2]->sha1); + read_mmblob(&ancestor, threeway[0]); + read_mmblob(&ours, threeway[1]); + read_mmblob(&theirs, threeway[2]); /* * NEEDSWORK: re-create conflicts from merges with @@ -191,17 +210,15 @@ static int checkout_merged(int pos, struct checkout *state) if (write_sha1_file(result_buf.ptr, result_buf.size, blob_type, sha1)) die(_("Unable to add merge result for '%s'"), path); - ce = make_cache_entry(create_ce_mode(active_cache[pos+1]->ce_mode), - sha1, - path, 2, 0); + ce = make_cache_entry(mode, sha1, path, 2, 0); if (!ce) die(_("make_cache_entry failed for path '%s'"), path); status = checkout_entry(ce, state, NULL); return status; } -static int checkout_paths(struct tree *source_tree, const char **pathspec, - struct checkout_opts *opts) +static int checkout_paths(const struct checkout_opts *opts, + const char *revision) { int pos; struct checkout state; @@ -213,35 +230,65 @@ 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); for (pos = 0; pos < active_nr; pos++) { struct cache_entry *ce = active_cache[pos]; - match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, ps_matched); + if (opts->source_tree && !(ce->ce_flags & CE_UPDATE)) + continue; + match_pathspec(opts->pathspec, ce->name, ce_namelen(ce), 0, ps_matched); } - if (report_path_error(ps_matched, pathspec, 0)) + if (report_path_error(ps_matched, opts->pathspec, opts->prefix)) return 1; /* "checkout -m path" to recreate conflicted state */ if (opts->merge) - unmerge_cache(pathspec); + unmerge_cache(opts->pathspec); /* 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)) { + if (match_pathspec(opts->pathspec, ce->name, ce_namelen(ce), 0, NULL)) { if (!ce_stage(ce)) continue; if (opts->force) { @@ -249,7 +296,7 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec, } else if (stage) { errs |= check_stage(stage, ce, pos); } else if (opts->merge) { - errs |= check_all_stages(ce, pos); + errs |= check_stages((1<<2) | (1<<3), ce, pos); } else { errs = 1; error(_("path '%s' is unmerged"), ce->name); @@ -266,7 +313,9 @@ 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 (match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, NULL)) { + if (opts->source_tree && !(ce->ce_flags & CE_UPDATE)) + continue; + if (match_pathspec(opts->pathspec, ce->name, ce_namelen(ce), 0, NULL)) { if (!ce_stage(ce)) { errs |= checkout_entry(ce, &state, NULL); continue; @@ -283,22 +332,22 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec, commit_locked_index(lock_file)) die(_("unable to write new index file")); - resolve_ref("HEAD", rev, 0, &flag); + read_ref_full("HEAD", rev, 0, &flag); head = lookup_commit_reference_gently(rev, 1); errs |= post_checkout_hook(head, head, 0); 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); } @@ -313,7 +362,8 @@ 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; @@ -325,14 +375,14 @@ 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 @@ -363,8 +413,10 @@ 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)); @@ -375,7 +427,7 @@ 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 { @@ -402,11 +454,13 @@ 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; - topts.dir = xcalloc(1, sizeof(*topts.dir)); - topts.dir->flags |= DIR_SHOW_IGNORED; - topts.dir->exclude_per_dir = ".gitignore"; + if (opts->overwrite_ignore) { + topts.dir = xcalloc(1, sizeof(*topts.dir)); + topts.dir->flags |= DIR_SHOW_IGNORED; + setup_standard_excludes(topts.dir); + } tree = parse_tree_indirect(old->commit ? old->commit->object.sha1 : EMPTY_TREE_SHA1_BIN); @@ -459,7 +513,8 @@ 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; @@ -467,7 +522,8 @@ 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; } @@ -494,21 +550,7 @@ 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) { @@ -535,7 +577,10 @@ static void update_refs_for_switch(struct checkout_opts *opts, else create_branch(old->name, opts->new_branch, new->name, opts->new_branch_force ? 1 : 0, - opts->new_branch_log, opts->track); + opts->new_branch_log, + opts->new_branch_force ? 1 : 0, + opts->quiet, + opts->track); new->name = opts->new_branch; setup_branch_path(new); } @@ -553,15 +598,19 @@ 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. */ create_symref("HEAD", new->path, msg.buf); if (!opts->quiet) { if (old->path && !strcmp(new->path, old->path)) { - fprintf(stderr, _("Already on '%s'\n"), - new->name); + if (opts->new_branch_force) + fprintf(stderr, _("Reset branch '%s'\n"), + new->name); + else + fprintf(stderr, _("Already on '%s'\n"), + new->name); } else if (opts->new_branch) { if (opts->branch_exists) fprintf(stderr, _("Switched to and reset branch '%s'\n"), new->name); @@ -588,35 +637,11 @@ static void update_refs_for_switch(struct checkout_opts *opts, report_tracking(new); } -struct rev_list_args { - int argc; - int alloc; - const char **argv; -}; - -static void add_one_rev_list_arg(struct rev_list_args *args, const char *s) -{ - ALLOC_GROW(args->argv, args->argc + 1, args->alloc); - args->argv[args->argc++] = s; -} - -static int add_one_ref_to_rev_list_arg(const char *refname, - const unsigned char *sha1, - int flags, - void *cb_data) -{ - add_one_rev_list_arg(cb_data, refname); - return 0; -} - -static int clear_commit_marks_from_one_ref(const char *refname, - const unsigned char *sha1, - int flags, - void *cb_data) +static int add_pending_uninteresting_ref(const char *refname, + const unsigned char *sha1, + int flags, void *cb_data) { - struct commit *commit = lookup_commit_reference_gently(sha1, 1); - if (commit) - clear_commit_marks(commit, -1); + add_pending_sha1(cb_data, refname, sha1, UNINTERESTING); return 0; } @@ -657,24 +682,25 @@ static void suggest_reattach(struct commit *commit, struct rev_info *revs) "Warning: you are leaving %d commit behind, " "not connected to\n" "any of your branches:\n\n" - "%s\n" - "If you want to keep it 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", + "%s\n", /* The plural version */ "Warning: you are leaving %d commits behind, " "not connected to\n" "any of your branches:\n\n" - "%s\n" - "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", + "%s\n", /* Give ngettext() the count */ lost), lost, - sb.buf, - sha1_to_hex(commit->object.sha1)); + sb.buf); strbuf_release(&sb); + + if (advice_detached_head) + fprintf(stderr, + _( + "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)); } /* @@ -682,40 +708,45 @@ 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_list_args args = { 0, 0, NULL }; struct rev_info revs; - - add_one_rev_list_arg(&args, "(internal)"); - add_one_rev_list_arg(&args, sha1_to_hex(commit->object.sha1)); - add_one_rev_list_arg(&args, "--not"); - for_each_ref(add_one_ref_to_rev_list_arg, &args); - add_one_rev_list_arg(&args, "--"); - add_one_rev_list_arg(&args, NULL); + struct object *object = &old->object; + struct object_array refs; init_revisions(&revs, NULL); - if (setup_revisions(args.argc - 1, args.argv, &revs, NULL) != 1) - die(_("internal error: only -- alone should have been left")); + setup_revisions(0, NULL, &revs, NULL); + + object->flags &= ~UNINTERESTING; + 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(commit, -1); - for_each_ref(clear_commit_marks_from_one_ref, NULL); + 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 = resolve_ref("HEAD", rev, 0, &flag); + old.path = path_to_free = resolve_refdup("HEAD", rev, 0, &flag); old.commit = lookup_commit_reference_gently(rev, 1); if (!(flag & REF_ISSYMREF)) old.path = NULL; @@ -731,17 +762,20 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new) parse_commit(new->commit); } - ret = merge_working_tree(opts, &old, new); - if (ret) + 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); - return ret || opts->writeout_error; + free(path_to_free); + return ret || writeout_error; } static int git_checkout_config(const char *var, const char *value, void *cb) @@ -758,12 +792,6 @@ 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; @@ -878,8 +906,8 @@ static int parse_branchname_arg(int argc, const char **argv, new->name = arg; setup_branch_path(new); - if (check_ref_format(new->path) == CHECK_REF_FORMAT_OK && - resolve_ref(new->path, branch_rev, 1, NULL)) + if (!check_refname_format(new->path, 0) && + !read_ref(new->path, branch_rev)) hashcpy(rev, branch_rev); else new->path = NULL; /* not an existing branch */ @@ -913,43 +941,104 @@ 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_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")), { 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(), }; 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); @@ -959,26 +1048,27 @@ 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")); @@ -992,22 +1082,6 @@ 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. @@ -1022,69 +1096,56 @@ 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, &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; - if (strbuf_check_branch_ref(&buf, opts.new_branch)) - die(_("git checkout: we do not like '%s' as a branch name."), - opts.new_branch); - if (!get_sha1(buf.buf, rev)) { - opts.branch_exists = 1; - if (!opts.new_branch_force) - die(_("git checkout: branch %s already exists"), - opts.new_branch); - } - strbuf_release(&buf); - } - if (new.name && !new.commit) { - die(_("Cannot switch branch to a non-commit.")); + opts.branch_exists = + validate_new_branchname(opts.new_branch, &buf, + !!opts.new_branch_force, + !!opts.new_branch_force); + + strbuf_release(&buf); } - 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); } |