diff options
Diffstat (limited to 'builtin-checkout.c')
| -rw-r--r-- | builtin-checkout.c | 141 |
1 files changed, 105 insertions, 36 deletions
diff --git a/builtin-checkout.c b/builtin-checkout.c index e0bbea58f..270866938 100644 --- a/builtin-checkout.c +++ b/builtin-checkout.c @@ -179,7 +179,7 @@ static int checkout_merged(int pos, struct checkout *state) /* * NEEDSWORK: * There is absolutely no reason to write this as a blob object - * and create a phoney cache entry just to leak. This hack is + * and create a phony cache entry just to leak. This hack is * primarily to get to the write_entry() machinery that massages * the contents to work-tree format and writes out which only * allows it for a cache entry. The code in write_entry() needs @@ -216,7 +216,7 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec, struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); newfd = hold_locked_index(lock_file, 1); - if (read_cache() < 0) + if (read_cache_preload(pathspec) < 0) return error("corrupt index file"); if (source_tree) @@ -293,6 +293,8 @@ static void show_local_changes(struct object *head) init_revisions(&rev, NULL); rev.abbrev = 0; rev.diffopt.output_format |= DIFF_FORMAT_NAME_STATUS; + if (diff_setup_done(&rev.diffopt) < 0) + die("diff_setup_done failed"); add_pending_object(&rev, head, NULL); run_diff_index(&rev, 0); } @@ -300,8 +302,9 @@ static void show_local_changes(struct object *head) static void describe_detached_head(char *msg, struct commit *commit) { struct strbuf sb = STRBUF_INIT; + struct pretty_print_context ctx = {0}; parse_commit(commit); - pretty_print_commit(CMIT_FMT_ONELINE, commit, &sb, 0, NULL, NULL, 0, 0); + pretty_print_commit(CMIT_FMT_ONELINE, commit, &sb, &ctx); fprintf(stderr, "%s %s... %s\n", msg, find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV), sb.buf); strbuf_release(&sb); @@ -349,16 +352,11 @@ struct branch_info { static void setup_branch_path(struct branch_info *branch) { struct strbuf buf = STRBUF_INIT; - int ret; - if ((ret = interpret_nth_last_branch(branch->name, &buf)) - && ret == strlen(branch->name)) { + strbuf_branchname(&buf, branch->name); + if (strcmp(buf.buf, branch->name)) branch->name = xstrdup(buf.buf); - strbuf_splice(&buf, 0, 0, "refs/heads/", 11); - } else { - strbuf_addstr(&buf, "refs/heads/"); - strbuf_addstr(&buf, branch->name); - } + strbuf_splice(&buf, 0, 0, "refs/heads/", 11); branch->path = strbuf_detach(&buf, NULL); } @@ -369,7 +367,7 @@ static int merge_working_tree(struct checkout_opts *opts, struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); int newfd = hold_locked_index(lock_file, 1); - if (read_cache() < 0) + if (read_cache_preload(NULL) < 0) return error("corrupt index file"); if (opts->force) { @@ -403,9 +401,11 @@ static int merge_working_tree(struct checkout_opts *opts, topts.verbose_update = !opts->quiet; topts.fn = twoway_merge; topts.dir = xcalloc(1, sizeof(*topts.dir)); - topts.dir->show_ignored = 1; + topts.dir->flags |= DIR_SHOW_IGNORED; topts.dir->exclude_per_dir = ".gitignore"; - tree = parse_tree_indirect(old->commit->object.sha1); + tree = parse_tree_indirect(old->commit ? + old->commit->object.sha1 : + (unsigned char *)EMPTY_TREE_SHA1_BIN); init_tree_desc(&trees[0], tree->buffer, tree->size); tree = parse_tree_indirect(new->commit->object.sha1); init_tree_desc(&trees[1], tree->buffer, tree->size); @@ -550,26 +550,18 @@ 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) + return ret; + /* - * If we were on a detached HEAD, but we are now moving to + * If we were on a detached HEAD, but have now moved to * a new commit, we want to mention the old commit once more * to remind the user that it might be lost. */ if (!opts->quiet && !old.path && old.commit && new->commit != old.commit) describe_detached_head("Previous HEAD position was", old.commit); - if (!old.commit && !opts->force) { - if (!opts->quiet) { - fprintf(stderr, "warning: You appear to be on a branch yet to be born.\n"); - fprintf(stderr, "warning: Forcing checkout of %s.\n", new->name); - } - opts->force = 1; - } - - ret = merge_working_tree(opts, &old, new); - if (ret) - return ret; - update_refs_for_switch(opts, &old, new); ret = post_checkout_hook(old.commit, new->commit, 1); @@ -581,6 +573,47 @@ static int git_checkout_config(const char *var, const char *value, void *cb) return git_xmerge_config(var, value, cb); } +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; + int unique; +}; + +static int check_tracking_name(const char *refname, const unsigned char *sha1, + int flags, void *cb_data) +{ + struct tracking_name_data *cb = cb_data; + const char *slash; + + if (prefixcmp(refname, "refs/remotes/")) + return 0; + slash = strchr(refname + 13, '/'); + if (!slash || strcmp(slash + 1, cb->name)) + return 0; + if (cb->remote) { + cb->unique = 0; + return 0; + } + cb->remote = xstrdup(refname); + return 0; +} + +static const char *unique_tracking_name(const char *name) +{ + struct tracking_name_data cb_data = { name, NULL, 1 }; + for_each_ref(check_tracking_name, &cb_data); + if (cb_data.unique) + return cb_data.remote; + free(cb_data.remote); + return NULL; +} + int cmd_checkout(int argc, const char **argv, const char *prefix) { struct checkout_opts opts; @@ -589,6 +622,8 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) 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), OPT_STRING('b', NULL, &opts.new_branch, "new branch", "branch"), @@ -599,10 +634,14 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) 2), OPT_SET_INT('3', "theirs", &opts.writeout_stage, "stage", 3), - OPT_BOOLEAN('f', NULL, &opts.force, "force"), + OPT_BOOLEAN('f', "force", &opts.force, "force"), OPT_BOOLEAN('m', "merge", &opts.merge, "merge"), OPT_STRING(0, "conflict", &conflict_style, "style", "conflict style (merge or diff3)"), + OPT_BOOLEAN('p', "patch", &patch_mode, "select hunks interactively"), + { OPTION_BOOLEAN, 0, "guess", &dwim_new_local_branch, NULL, + "second guess 'git checkout no-such-branch'", + PARSE_OPT_NOARG | PARSE_OPT_HIDDEN }, OPT_END(), }; int has_dash_dash; @@ -614,9 +653,13 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) opts.track = BRANCH_TRACK_UNSPECIFIED; - argc = parse_options(argc, argv, options, checkout_usage, + argc = parse_options(argc, argv, prefix, options, checkout_usage, PARSE_OPT_KEEP_DASHDASH); + if (patch_mode && (opts.track > 0 || opts.new_branch + || opts.new_branch_log || opts.merge || opts.force)) + die ("--patch is incompatible with all other options"); + /* --track without -b should DWIM */ if (0 < opts.track && !opts.new_branch) { const char *argv0 = argv[0]; @@ -632,8 +675,6 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) opts.new_branch = argv0 + 1; } - if (opts.track == BRANCH_TRACK_UNSPECIFIED) - opts.track = git_branch_track; if (conflict_style) { opts.merge = 1; /* implied */ git_xmerge_config("merge.conflictstyle", conflict_style, NULL); @@ -657,6 +698,11 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) * With no paths, if <something> is a commit, that is to * switch to the branch or detach HEAD at it. * + * With no paths, if <something> is _not_ a commit, no -t nor -b + * was given, and there is a tracking branch whose name is + * <something> in one and only one remote, then this is a short-hand + * to fork local <something> from that remote tracking branch. + * * Otherwise <something> shall not be ambiguous. * - If it's *only* a reference, treat it like case (1). * - If it's only a path, treat it like case (2). @@ -679,7 +725,21 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) if (get_sha1(arg, rev)) { if (has_dash_dash) /* case (1) */ die("invalid reference: %s", arg); - goto no_reference; /* case (3 -> 2) */ + if (!patch_mode && + dwim_new_local_branch && + opts.track == BRANCH_TRACK_UNSPECIFIED && + !opts.new_branch && + !check_filename(NULL, arg) && + argc == 1) { + const char *remote = unique_tracking_name(arg); + if (!remote || get_sha1(remote, rev)) + goto no_reference; + opts.new_branch = arg; + arg = remote; + /* DWIMmed to create local branch */ + } + else + goto no_reference; } /* we can't end up being in (2) anymore, eat the argument */ @@ -717,12 +777,19 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) } no_reference: + + if (opts.track == BRANCH_TRACK_UNSPECIFIED) + opts.track = git_branch_track; + if (argc) { const char **pathspec = get_pathspec(prefix, argv); if (!pathspec) die("invalid path specification"); + if (patch_mode) + return interactive_checkout(new.name, pathspec, &opts); + /* Checkout paths */ if (opts.new_branch) { if (argc == 1) { @@ -738,14 +805,16 @@ no_reference: return checkout_paths(source_tree, pathspec, &opts); } + if (patch_mode) + return interactive_checkout(new.name, NULL, &opts); + if (opts.new_branch) { struct strbuf buf = STRBUF_INIT; - strbuf_addstr(&buf, "refs/heads/"); - strbuf_addstr(&buf, opts.new_branch); + 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)) die("git checkout: branch %s already exists", opts.new_branch); - if (check_ref_format(buf.buf)) - die("git checkout: we do not like '%s' as a branch name.", opts.new_branch); strbuf_release(&buf); } |