diff options
Diffstat (limited to 'builtin/checkout.c')
| -rw-r--r-- | builtin/checkout.c | 111 |
1 files changed, 97 insertions, 14 deletions
diff --git a/builtin/checkout.c b/builtin/checkout.c index 88b1f43e05..560eae1715 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -18,6 +18,7 @@ #include "xdiff-interface.h" #include "ll-merge.h" #include "resolve-undo.h" +#include "submodule.h" static const char * const checkout_usage[] = { "git checkout [options] <branch>", @@ -32,9 +33,15 @@ struct checkout_opts { int writeout_stage; int writeout_error; + /* not set by parse_options */ + int branch_exists; + const char *new_branch; + const char *new_branch_force; + const char *new_orphan_branch; int new_branch_log; enum branch_track track; + struct diff_options diff_options; }; static int post_checkout_hook(struct commit *old, struct commit *new, @@ -149,6 +156,10 @@ static int checkout_merged(int pos, struct checkout *state) read_mmblob(&ours, active_cache[pos+1]->sha1); read_mmblob(&theirs, active_cache[pos+2]->sha1); + /* + * NEEDSWORK: re-create conflicts from merges with + * merge.renormalize set, too + */ status = ll_merge(&result_buf, path, &ancestor, "base", &ours, "ours", &theirs, "theirs", 0); free(ancestor.ptr); @@ -273,12 +284,12 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec, return errs; } -static void show_local_changes(struct object *head) +static void show_local_changes(struct object *head, 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.abbrev = 0; + 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"); @@ -372,7 +383,7 @@ static int merge_working_tree(struct checkout_opts *opts, topts.src_index = &the_index; topts.dst_index = &the_index; - topts.msgs.not_uptodate_file = "You have local changes to '%s'; cannot switch branches."; + setup_unpack_trees_porcelain(&topts, "checkout"); refresh_cache(REFRESH_QUIET); @@ -432,6 +443,13 @@ static int merge_working_tree(struct checkout_opts *opts, */ add_files_to_cache(NULL, NULL, 0); + /* + * NEEDSWORK: carrying over local changes + * when branches have different end-of-line + * normalization (or clean+smudge rules) is + * a pain; plumb in an option to set + * o.renormalize? + */ init_merge_options(&o); o.verbosity = 0; work = write_tree_from_memory(&o); @@ -455,7 +473,7 @@ static int merge_working_tree(struct checkout_opts *opts, die("unable to write new index file"); if (!opts->force && !opts->quiet) - show_local_changes(&new->commit->object); + show_local_changes(&new->commit->object, &opts->diff_options); return 0; } @@ -492,8 +510,27 @@ static void update_refs_for_switch(struct checkout_opts *opts, struct strbuf msg = STRBUF_INIT; const char *old_desc; if (opts->new_branch) { - create_branch(old->name, opts->new_branch, new->name, 0, - opts->new_branch_log, opts->track); + if (opts->new_orphan_branch) { + if (opts->new_branch_log && !log_all_ref_updates) { + int temp; + char log_file[PATH_MAX]; + char *ref_name = mkpath("refs/heads/%s", opts->new_orphan_branch); + + temp = log_all_ref_updates; + log_all_ref_updates = 1; + if (log_ref_setup(ref_name, log_file, sizeof(log_file))) { + fprintf(stderr, "Can not do reflog for '%s'\n", + opts->new_orphan_branch); + log_all_ref_updates = temp; + return; + } + log_all_ref_updates = temp; + } + } + else + create_branch(old->name, opts->new_branch, new->name, + opts->new_branch_force ? 1 : 0, + opts->new_branch_log, opts->track); new->name = opts->new_branch; setup_branch_path(new); } @@ -510,11 +547,22 @@ static void update_refs_for_switch(struct checkout_opts *opts, if (old->path && !strcmp(new->path, old->path)) fprintf(stderr, "Already on '%s'\n", new->name); - else + else if (opts->new_branch) fprintf(stderr, "Switched to%s branch '%s'\n", - opts->new_branch ? " a new" : "", + opts->branch_exists ? " and reset" : " a new", + new->name); + else + fprintf(stderr, "Switched to branch '%s'\n", new->name); } + if (old->path && old->name) { + char log_file[PATH_MAX], ref_file[PATH_MAX]; + + git_snpath(log_file, sizeof(log_file), "logs/%s", old->path); + git_snpath(ref_file, sizeof(ref_file), "%s", old->path); + if (!file_exists(ref_file) && file_exists(log_file)) + remove_path(log_file); + } } else if (strcmp(new->name, "HEAD")) { update_ref(msg.buf, "HEAD", new->commit->object.sha1, NULL, REF_NODEREF, DIE_ON_ERR); @@ -573,7 +621,16 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new) static int git_checkout_config(const char *var, const char *value, void *cb) { - return git_xmerge_config(var, value, cb); + if (!strcmp(var, "diff.ignoresubmodules")) { + struct checkout_opts *opts = cb; + handle_ignore_submodules_arg(&opts->diff_options, value); + return 0; + } + + if (!prefixcmp(var, "submodule.")) + return parse_submodule_config_option(var, value); + + return git_xmerge_config(var, value, NULL); } static int interactive_checkout(const char *revision, const char **pathspec, @@ -609,7 +666,8 @@ static int check_tracking_name(const char *refname, const unsigned char *sha1, static const char *unique_tracking_name(const char *name) { - struct tracking_name_data cb_data = { name, NULL, 1 }; + struct tracking_name_data cb_data = { NULL, NULL, 1 }; + cb_data.name = name; for_each_ref(check_tracking_name, &cb_data); if (cb_data.unique) return cb_data.remote; @@ -629,10 +687,14 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) int dwim_new_local_branch = 1; struct option options[] = { OPT__QUIET(&opts.quiet), - OPT_STRING('b', NULL, &opts.new_branch, "new branch", "branch"), + 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, "log for new branch"), OPT_SET_INT('t', "track", &opts.track, "track", BRANCH_TRACK_EXPLICIT), + OPT_STRING(0, "orphan", &opts.new_orphan_branch, "new branch", "new unparented branch"), OPT_SET_INT('2', "ours", &opts.writeout_stage, "stage", 2), OPT_SET_INT('3', "theirs", &opts.writeout_stage, "stage", @@ -652,13 +714,22 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) memset(&opts, 0, sizeof(opts)); memset(&new, 0, sizeof(new)); - git_config(git_checkout_config, NULL); + gitmodules_config(); + git_config(git_checkout_config, &opts); opts.track = BRANCH_TRACK_UNSPECIFIED; 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"); + + /* copy -B over to -b, so that we can just check the latter */ + 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)) die ("--patch is incompatible with all other options"); @@ -678,6 +749,14 @@ 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); @@ -821,8 +900,12 @@ no_reference: 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 (!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); } |