/*
* Builtin "git branch"
*
- * Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
+ * Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
* Based on git-branch.sh by Junio C Hamano.
*/
#include "cache.h"
+#include "color.h"
#include "refs.h"
#include "commit.h"
#include "builtin.h"
-
-static const char builtin_branch_usage[] =
-"git-branch (-d | -D) <branchname> | [-l] [-f] <branchname> [<start-point>] | [-r]";
-
+#include "remote.h"
+#include "parse-options.h"
+#include "branch.h"
+
+static const char * const builtin_branch_usage[] = {
+ "git-branch [options] [-r | -a]",
+ "git-branch [options] [-l] [-f] <branchname> [<start-point>]",
+ "git-branch [options] [-r] (-d | -D) <branchname>",
+ "git-branch [options] (-m | -M) [<oldbranch>] <newbranch>",
+ NULL
+};
+
+#define REF_UNKNOWN_TYPE 0x00
+#define REF_LOCAL_BRANCH 0x01
+#define REF_REMOTE_BRANCH 0x02
+#define REF_TAG 0x04
static const char *head;
static unsigned char head_sha1[20];
-static int in_merge_bases(const unsigned char *sha1,
- struct commit *rev1,
- struct commit *rev2)
+static int branch_use_color = -1;
+static char branch_colors[][COLOR_MAXLEN] = {
+ "\033[m", /* reset */
+ "", /* PLAIN (normal) */
+ "\033[31m", /* REMOTE (red) */
+ "", /* LOCAL (normal) */
+ "\033[32m", /* CURRENT (green) */
+};
+enum color_branch {
+ COLOR_BRANCH_RESET = 0,
+ COLOR_BRANCH_PLAIN = 1,
+ COLOR_BRANCH_REMOTE = 2,
+ COLOR_BRANCH_LOCAL = 3,
+ COLOR_BRANCH_CURRENT = 4,
+};
+
+static int parse_branch_color_slot(const char *var, int ofs)
{
- struct commit_list *bases, *b;
- int ret = 0;
+ if (!strcasecmp(var+ofs, "plain"))
+ return COLOR_BRANCH_PLAIN;
+ if (!strcasecmp(var+ofs, "reset"))
+ return COLOR_BRANCH_RESET;
+ if (!strcasecmp(var+ofs, "remote"))
+ return COLOR_BRANCH_REMOTE;
+ if (!strcasecmp(var+ofs, "local"))
+ return COLOR_BRANCH_LOCAL;
+ if (!strcasecmp(var+ofs, "current"))
+ return COLOR_BRANCH_CURRENT;
+ die("bad config variable '%s'", var);
+}
- bases = get_merge_bases(rev1, rev2, 1);
- for (b = bases; b; b = b->next) {
- if (!hashcmp(sha1, b->item->object.sha1)) {
- ret = 1;
- break;
- }
+static int git_branch_config(const char *var, const char *value)
+{
+ if (!strcmp(var, "color.branch")) {
+ branch_use_color = git_config_colorbool(var, value, -1);
+ return 0;
}
+ if (!prefixcmp(var, "color.branch.")) {
+ int slot = parse_branch_color_slot(var, 13);
+ if (!value)
+ return config_error_nonbool(var);
+ color_parse(value, var, branch_colors[slot]);
+ return 0;
+ }
+ return git_color_default_config(var, value);
+}
- free_commit_list(bases);
- return ret;
+static const char *branch_get_color(enum color_branch ix)
+{
+ if (branch_use_color > 0)
+ return branch_colors[ix];
+ return "";
}
-static void delete_branches(int argc, const char **argv, int force)
+static int delete_branches(int argc, const char **argv, int force, int kinds)
{
- struct commit *rev, *head_rev;
+ struct commit *rev, *head_rev = head_rev;
unsigned char sha1[20];
- char *name;
+ char *name = NULL;
+ const char *fmt, *remote;
+ char section[PATH_MAX];
int i;
+ int ret = 0;
+
+ switch (kinds) {
+ case REF_REMOTE_BRANCH:
+ fmt = "refs/remotes/%s";
+ remote = "remote ";
+ force = 1;
+ break;
+ case REF_LOCAL_BRANCH:
+ fmt = "refs/heads/%s";
+ remote = "";
+ break;
+ default:
+ die("cannot use -a with -d");
+ }
- head_rev = lookup_commit_reference(head_sha1);
+ if (!force) {
+ head_rev = lookup_commit_reference(head_sha1);
+ if (!head_rev)
+ die("Couldn't look up commit object for HEAD");
+ }
for (i = 0; i < argc; i++) {
- if (!strcmp(head, argv[i]))
- die("Cannot delete the branch you are currently on.");
+ if (kinds == REF_LOCAL_BRANCH && !strcmp(head, argv[i])) {
+ error("Cannot delete the branch '%s' "
+ "which you are currently on.", argv[i]);
+ ret = 1;
+ continue;
+ }
- name = xstrdup(mkpath("refs/heads/%s", argv[i]));
- if (!resolve_ref(name, sha1, 1, NULL))
- die("Branch '%s' not found.", argv[i]);
+ free(name);
+
+ name = xstrdup(mkpath(fmt, argv[i]));
+ if (!resolve_ref(name, sha1, 1, NULL)) {
+ error("%sbranch '%s' not found.",
+ remote, argv[i]);
+ ret = 1;
+ continue;
+ }
rev = lookup_commit_reference(sha1);
- if (!rev || !head_rev)
- die("Couldn't look up commit objects.");
+ if (!rev) {
+ error("Couldn't look up commit object for '%s'", name);
+ ret = 1;
+ continue;
+ }
/* This checks whether the merge bases of branch and
* HEAD contains branch -- which means that the HEAD
*/
if (!force &&
- !in_merge_bases(sha1, rev, head_rev)) {
- fprintf(stderr,
- "The branch '%s' is not a strict subset of your current HEAD.\n"
- "If you are sure you want to delete it, run 'git branch -D %s'.\n",
- argv[i], argv[i]);
- exit(1);
+ !in_merge_bases(rev, &head_rev, 1)) {
+ error("The branch '%s' is not an ancestor of "
+ "your current HEAD.\n"
+ "If you are sure you want to delete it, "
+ "run 'git branch -D %s'.", argv[i], argv[i]);
+ ret = 1;
+ continue;
}
- if (delete_ref(name, sha1))
- printf("Error deleting branch '%s'\n", argv[i]);
- else
- printf("Deleted branch %s.\n", argv[i]);
-
- free(name);
+ if (delete_ref(name, sha1)) {
+ error("Error deleting %sbranch '%s'", remote,
+ argv[i]);
+ ret = 1;
+ } else {
+ printf("Deleted %sbranch %s.\n", remote, argv[i]);
+ snprintf(section, sizeof(section), "branch.%s",
+ argv[i]);
+ if (git_config_rename_section(section, NULL) < 0)
+ warning("Update of config-file failed");
+ }
}
+
+ free(name);
+
+ return(ret);
}
-static int ref_index, ref_alloc;
-static char **ref_list;
+struct ref_item {
+ char *name;
+ unsigned int kind;
+ unsigned char sha1[20];
+};
+
+struct ref_list {
+ int index, alloc, maxwidth;
+ struct ref_item *list;
+ struct commit_list *with_commit;
+ int kinds;
+};
-static int append_ref(const char *refname, const unsigned char *sha1, int flags,
- void *cb_data)
+static int has_commit(const unsigned char *sha1, struct commit_list *with_commit)
{
- if (ref_index >= ref_alloc) {
- ref_alloc = alloc_nr(ref_alloc);
- ref_list = xrealloc(ref_list, ref_alloc * sizeof(char *));
+ struct commit *commit;
+
+ if (!with_commit)
+ return 1;
+ commit = lookup_commit_reference_gently(sha1, 1);
+ if (!commit)
+ return 0;
+ while (with_commit) {
+ struct commit *other;
+
+ other = with_commit->item;
+ with_commit = with_commit->next;
+ if (in_merge_bases(other, &commit, 1))
+ return 1;
}
+ return 0;
+}
+
+static int append_ref(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
+{
+ struct ref_list *ref_list = (struct ref_list*)(cb_data);
+ struct ref_item *newitem;
+ int kind = REF_UNKNOWN_TYPE;
+ int len;
+
+ /* Detect kind */
+ if (!prefixcmp(refname, "refs/heads/")) {
+ kind = REF_LOCAL_BRANCH;
+ refname += 11;
+ } else if (!prefixcmp(refname, "refs/remotes/")) {
+ kind = REF_REMOTE_BRANCH;
+ refname += 13;
+ } else if (!prefixcmp(refname, "refs/tags/")) {
+ kind = REF_TAG;
+ refname += 10;
+ }
+
+ /* Filter with with_commit if specified */
+ if (!has_commit(sha1, ref_list->with_commit))
+ return 0;
- ref_list[ref_index++] = xstrdup(refname);
+ /* Don't add types the caller doesn't want */
+ if ((kind & ref_list->kinds) == 0)
+ return 0;
+
+ /* Resize buffer */
+ if (ref_list->index >= ref_list->alloc) {
+ ref_list->alloc = alloc_nr(ref_list->alloc);
+ ref_list->list = xrealloc(ref_list->list,
+ ref_list->alloc * sizeof(struct ref_item));
+ }
+
+ /* Record the new item */
+ newitem = &(ref_list->list[ref_list->index++]);
+ newitem->name = xstrdup(refname);
+ newitem->kind = kind;
+ hashcpy(newitem->sha1, sha1);
+ len = strlen(newitem->name);
+ if (len > ref_list->maxwidth)
+ ref_list->maxwidth = len;
return 0;
}
+static void free_ref_list(struct ref_list *ref_list)
+{
+ int i;
+
+ for (i = 0; i < ref_list->index; i++)
+ free(ref_list->list[i].name);
+ free(ref_list->list);
+}
+
static int ref_cmp(const void *r1, const void *r2)
{
- return strcmp(*(char **)r1, *(char **)r2);
+ struct ref_item *c1 = (struct ref_item *)(r1);
+ struct ref_item *c2 = (struct ref_item *)(r2);
+
+ if (c1->kind != c2->kind)
+ return c1->kind - c2->kind;
+ return strcmp(c1->name, c2->name);
}
-static void print_ref_list(int remote_only)
+static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
+ int abbrev, int current)
{
- int i;
char c;
+ int color;
+ struct commit *commit;
- if (remote_only)
- for_each_remote_ref(append_ref, NULL);
- else
- for_each_branch_ref(append_ref, NULL);
+ switch (item->kind) {
+ case REF_LOCAL_BRANCH:
+ color = COLOR_BRANCH_LOCAL;
+ break;
+ case REF_REMOTE_BRANCH:
+ color = COLOR_BRANCH_REMOTE;
+ break;
+ default:
+ color = COLOR_BRANCH_PLAIN;
+ break;
+ }
- qsort(ref_list, ref_index, sizeof(char *), ref_cmp);
+ c = ' ';
+ if (current) {
+ c = '*';
+ color = COLOR_BRANCH_CURRENT;
+ }
+
+ if (verbose) {
+ struct strbuf subject;
+ const char *sub = " **** invalid ref ****";
- for (i = 0; i < ref_index; i++) {
- c = ' ';
- if (!strcmp(ref_list[i], head))
- c = '*';
+ strbuf_init(&subject, 0);
- printf("%c %s\n", c, ref_list[i]);
+ commit = lookup_commit(item->sha1);
+ if (commit && !parse_commit(commit)) {
+ pretty_print_commit(CMIT_FMT_ONELINE, commit,
+ &subject, 0, NULL, NULL, 0, 0);
+ sub = subject.buf;
+ }
+ printf("%c %s%-*s%s %s %s\n", c, branch_get_color(color),
+ maxwidth, item->name,
+ branch_get_color(COLOR_BRANCH_RESET),
+ find_unique_abbrev(item->sha1, abbrev), sub);
+ strbuf_release(&subject);
+ } else {
+ printf("%c %s%s%s\n", c, branch_get_color(color), item->name,
+ branch_get_color(COLOR_BRANCH_RESET));
}
}
-static void create_branch(const char *name, const char *start,
- int force, int reflog)
+static void print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit)
{
- struct ref_lock *lock;
- struct commit *commit;
+ int i;
+ struct ref_list ref_list;
+
+ memset(&ref_list, 0, sizeof(ref_list));
+ ref_list.kinds = kinds;
+ ref_list.with_commit = with_commit;
+ for_each_ref(append_ref, &ref_list);
+
+ qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);
+
+ detached = (detached && (kinds & REF_LOCAL_BRANCH));
+ if (detached && has_commit(head_sha1, with_commit)) {
+ struct ref_item item;
+ item.name = xstrdup("(no branch)");
+ item.kind = REF_LOCAL_BRANCH;
+ hashcpy(item.sha1, head_sha1);
+ if (strlen(item.name) > ref_list.maxwidth)
+ ref_list.maxwidth = strlen(item.name);
+ print_ref_item(&item, ref_list.maxwidth, verbose, abbrev, 1);
+ free(item.name);
+ }
+
+ for (i = 0; i < ref_list.index; i++) {
+ int current = !detached &&
+ (ref_list.list[i].kind == REF_LOCAL_BRANCH) &&
+ !strcmp(ref_list.list[i].name, head);
+ print_ref_item(&ref_list.list[i], ref_list.maxwidth, verbose,
+ abbrev, current);
+ }
+
+ free_ref_list(&ref_list);
+}
+
+static void rename_branch(const char *oldname, const char *newname, int force)
+{
+ char oldref[PATH_MAX], newref[PATH_MAX], logmsg[PATH_MAX*2 + 100];
unsigned char sha1[20];
- char ref[PATH_MAX], msg[PATH_MAX + 20];
+ char oldsection[PATH_MAX], newsection[PATH_MAX];
- snprintf(ref, sizeof ref, "refs/heads/%s", name);
- if (check_ref_format(ref))
- die("'%s' is not a valid branch name.", name);
+ if (!oldname)
+ die("cannot rename the current branch while not on any.");
- if (resolve_ref(ref, sha1, 1, NULL)) {
- if (!force)
- die("A branch named '%s' already exists.", name);
- else if (!strcmp(head, name))
- die("Cannot force update the current branch.");
- }
+ if (snprintf(oldref, sizeof(oldref), "refs/heads/%s", oldname) > sizeof(oldref))
+ die("Old branchname too long");
- if (get_sha1(start, sha1) ||
- (commit = lookup_commit_reference(sha1)) == NULL)
- die("Not a valid branch point: '%s'.", start);
- hashcpy(sha1, commit->object.sha1);
+ if (check_ref_format(oldref))
+ die("Invalid branch name: %s", oldref);
- lock = lock_any_ref_for_update(ref, NULL);
- if (!lock)
- die("Failed to lock ref for update: %s.", strerror(errno));
+ if (snprintf(newref, sizeof(newref), "refs/heads/%s", newname) > sizeof(newref))
+ die("New branchname too long");
- if (reflog) {
- log_all_ref_updates = 1;
- snprintf(msg, sizeof msg, "branch: Created from %s", start);
- }
+ if (check_ref_format(newref))
+ die("Invalid branch name: %s", newref);
- if (write_ref_sha1(lock, sha1, msg) < 0)
- die("Failed to write ref: %s.", strerror(errno));
-}
+ if (resolve_ref(newref, sha1, 1, NULL) && !force)
+ die("A branch named '%s' already exists.", newname);
-int cmd_branch(int argc, const char **argv, const char *prefix)
-{
- int delete = 0, force_delete = 0, force_create = 0, remote_only = 0;
- int reflog = 0;
- int i;
+ snprintf(logmsg, sizeof(logmsg), "Branch: renamed %s to %s",
+ oldref, newref);
- git_config(git_default_config);
+ if (rename_ref(oldref, newref, logmsg))
+ die("Branch rename failed");
- for (i = 1; i < argc; i++) {
- const char *arg = argv[i];
+ /* no need to pass logmsg here as HEAD didn't really move */
+ if (!strcmp(oldname, head) && create_symref("HEAD", newref, NULL))
+ die("Branch renamed to %s, but HEAD is not updated!", newname);
- if (arg[0] != '-')
- break;
- if (!strcmp(arg, "--")) {
- i++;
- break;
- }
- if (!strcmp(arg, "-d")) {
- delete = 1;
- continue;
- }
- if (!strcmp(arg, "-D")) {
- delete = 1;
- force_delete = 1;
- continue;
- }
- if (!strcmp(arg, "-f")) {
- force_create = 1;
- continue;
- }
- if (!strcmp(arg, "-r")) {
- remote_only = 1;
- continue;
- }
- if (!strcmp(arg, "-l")) {
- reflog = 1;
- continue;
- }
- usage(builtin_branch_usage);
- }
+ snprintf(oldsection, sizeof(oldsection), "branch.%s", oldref + 11);
+ snprintf(newsection, sizeof(newsection), "branch.%s", newref + 11);
+ if (git_config_rename_section(oldsection, newsection) < 0)
+ die("Branch is renamed, but update of config-file failed");
+}
+
+static int opt_parse_with_commit(const struct option *opt, const char *arg, int unset)
+{
+ unsigned char sha1[20];
+ struct commit *commit;
+
+ if (!arg)
+ return -1;
+ if (get_sha1(arg, sha1))
+ die("malformed object name %s", arg);
+ commit = lookup_commit_reference(sha1);
+ if (!commit)
+ die("no such commit %s", arg);
+ commit_list_insert(commit, opt->value);
+ return 0;
+}
- head = xstrdup(resolve_ref("HEAD", head_sha1, 0, NULL));
+int cmd_branch(int argc, const char **argv, const char *prefix)
+{
+ int delete = 0, rename = 0, force_create = 0;
+ int verbose = 0, abbrev = DEFAULT_ABBREV, detached = 0;
+ int reflog = 0;
+ enum branch_track track;
+ int kinds = REF_LOCAL_BRANCH;
+ struct commit_list *with_commit = NULL;
+
+ struct option options[] = {
+ OPT_GROUP("Generic options"),
+ OPT__VERBOSE(&verbose),
+ OPT_SET_INT( 0 , "track", &track, "set up tracking mode (see git-pull(1))",
+ BRANCH_TRACK_EXPLICIT),
+ OPT_BOOLEAN( 0 , "color", &branch_use_color, "use colored output"),
+ OPT_SET_INT('r', NULL, &kinds, "act on remote-tracking branches",
+ REF_REMOTE_BRANCH),
+ OPT_CALLBACK(0, "contains", &with_commit, "commit",
+ "print only branches that contain the commit",
+ opt_parse_with_commit),
+ {
+ OPTION_CALLBACK, 0, "with", &with_commit, "commit",
+ "print only branches that contain the commit",
+ PARSE_OPT_HIDDEN, opt_parse_with_commit,
+ },
+ OPT__ABBREV(&abbrev),
+
+ OPT_GROUP("Specific git-branch actions:"),
+ OPT_SET_INT('a', NULL, &kinds, "list both remote-tracking and local branches",
+ REF_REMOTE_BRANCH | REF_LOCAL_BRANCH),
+ OPT_BIT('d', NULL, &delete, "delete fully merged branch", 1),
+ OPT_BIT('D', NULL, &delete, "delete branch (even if not merged)", 2),
+ OPT_BIT('m', NULL, &rename, "move/rename a branch and its reflog", 1),
+ OPT_BIT('M', NULL, &rename, "move/rename a branch, even if target exists", 2),
+ OPT_BOOLEAN('l', NULL, &reflog, "create the branch's reflog"),
+ OPT_BOOLEAN('f', NULL, &force_create, "force creation (when already exists)"),
+ OPT_END(),
+ };
+
+ git_config(git_branch_config);
+
+ if (branch_use_color == -1)
+ branch_use_color = git_use_color_default;
+
+ track = git_branch_track;
+ argc = parse_options(argc, argv, options, builtin_branch_usage, 0);
+ if (!!delete + !!rename + !!force_create > 1)
+ usage_with_options(builtin_branch_usage, options);
+
+ head = resolve_ref("HEAD", head_sha1, 0, NULL);
if (!head)
die("Failed to resolve HEAD as a valid ref.");
- if (strncmp(head, "refs/heads/", 11))
- die("HEAD not found below refs/heads!");
- head += 11;
+ head = xstrdup(head);
+ if (!strcmp(head, "HEAD")) {
+ detached = 1;
+ } else {
+ if (prefixcmp(head, "refs/heads/"))
+ die("HEAD not found below refs/heads!");
+ head += 11;
+ }
if (delete)
- delete_branches(argc - i, argv + i, force_delete);
- else if (i == argc)
- print_ref_list(remote_only);
- else if (i == argc - 1)
- create_branch(argv[i], head, force_create, reflog);
- else if (i == argc - 2)
- create_branch(argv[i], argv[i + 1], force_create, reflog);
+ return delete_branches(argc, argv, delete > 1, kinds);
+ else if (argc == 0)
+ print_ref_list(kinds, detached, verbose, abbrev, with_commit);
+ else if (rename && (argc == 1))
+ rename_branch(head, argv[0], rename > 1);
+ else if (rename && (argc == 2))
+ rename_branch(argv[0], argv[1], rename > 1);
+ else if (argc <= 2)
+ create_branch(head, argv[0], (argc == 2) ? argv[1] : head,
+ force_create, reflog, track);
else
- usage(builtin_branch_usage);
+ usage_with_options(builtin_branch_usage, options);
return 0;
}