compat: Add simplified merge sort implementation from glibc
[gitweb.git] / builtin-branch.c
index 5f5c1823cb27cf1173c87f43bd0d2de95a06bf46..089cae59299659b20359b7249e57ddc3a43ded06 100644 (file)
 #include "commit.h"
 #include "builtin.h"
 #include "remote.h"
-
-static const char builtin_branch_usage[] =
-  "git-branch [-r] (-d | -D) <branchname> | [--track | --no-track] [-l] [-f] <branchname> [<start-point>] | (-m | -M) [<oldbranch>] <newbranch> | [--color | --no-color] [-r | -a] [-v [--abbrev=<length> | --no-abbrev]]";
+#include "parse-options.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
@@ -59,7 +65,7 @@ static int parse_branch_color_slot(const char *var, int ofs)
 static int git_branch_config(const char *var, const char *value)
 {
        if (!strcmp(var, "color.branch")) {
-               branch_use_color = git_config_colorbool(var, value);
+               branch_use_color = git_config_colorbool(var, value, -1);
                return 0;
        }
        if (!prefixcmp(var, "color.branch.")) {
@@ -142,7 +148,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds)
 
                if (!force &&
                    !in_merge_bases(rev, &head_rev, 1)) {
-                       error("The branch '%s' is not a strict subset of "
+                       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]);
@@ -178,9 +184,30 @@ struct ref_item {
 struct ref_list {
        int index, alloc, maxwidth;
        struct ref_item *list;
+       struct commit_list *with_commit;
        int kinds;
 };
 
+static int has_commit(const unsigned char *sha1, struct commit_list *with_commit)
+{
+       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);
@@ -200,6 +227,10 @@ static int append_ref(const char *refname, const unsigned char *sha1, int flags,
                refname += 10;
        }
 
+       /* Filter with with_commit if specified */
+       if (!has_commit(sha1, ref_list->with_commit))
+               return 0;
+
        /* Don't add types the caller doesn't want */
        if ((kind & ref_list->kinds) == 0)
                return 0;
@@ -268,42 +299,42 @@ static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
        }
 
        if (verbose) {
-               char *subject = NULL;
-               unsigned long subject_len = 0;
+               struct strbuf subject;
                const char *sub = " **** invalid ref ****";
 
+               strbuf_init(&subject, 0);
+
                commit = lookup_commit(item->sha1);
                if (commit && !parse_commit(commit)) {
-                       pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
-                                           &subject, &subject_len, 0,
-                                           NULL, NULL, 0);
-                       sub = subject;
+                       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);
-               if (subject)
-                       free(subject);
+               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 print_ref_list(int kinds, int detached, int verbose, int abbrev)
+static void print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_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) {
+       if (detached && has_commit(head_sha1, with_commit)) {
                struct ref_item item;
                item.name = xstrdup("(no branch)");
                item.kind = REF_LOCAL_BRANCH;
@@ -500,99 +531,64 @@ static void rename_branch(const char *oldname, const char *newname, int force)
                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;
+}
+
 int cmd_branch(int argc, const char **argv, const char *prefix)
 {
-       int delete = 0, force_delete = 0, force_create = 0;
-       int rename = 0, force_rename = 0;
+       int delete = 0, rename = 0, force_create = 0;
        int verbose = 0, abbrev = DEFAULT_ABBREV, detached = 0;
        int reflog = 0, track;
        int kinds = REF_LOCAL_BRANCH;
-       int i;
+       struct commit_list *with_commit = NULL;
+
+       struct option options[] = {
+               OPT_GROUP("Generic options"),
+               OPT__VERBOSE(&verbose),
+               OPT_BOOLEAN( 0 , "track",  &track, "set up tracking mode (see git-pull(1))"),
+               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);
        track = branch_track;
-
-       for (i = 1; i < argc; i++) {
-               const char *arg = argv[i];
-
-               if (arg[0] != '-')
-                       break;
-               if (!strcmp(arg, "--")) {
-                       i++;
-                       break;
-               }
-               if (!strcmp(arg, "--track")) {
-                       track = 1;
-                       continue;
-               }
-               if (!strcmp(arg, "--no-track")) {
-                       track = 0;
-                       continue;
-               }
-               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, "-m")) {
-                       rename = 1;
-                       continue;
-               }
-               if (!strcmp(arg, "-M")) {
-                       rename = 1;
-                       force_rename = 1;
-                       continue;
-               }
-               if (!strcmp(arg, "-r")) {
-                       kinds = REF_REMOTE_BRANCH;
-                       continue;
-               }
-               if (!strcmp(arg, "-a")) {
-                       kinds = REF_REMOTE_BRANCH | REF_LOCAL_BRANCH;
-                       continue;
-               }
-               if (!strcmp(arg, "-l")) {
-                       reflog = 1;
-                       continue;
-               }
-               if (!prefixcmp(arg, "--no-abbrev")) {
-                       abbrev = 0;
-                       continue;
-               }
-               if (!prefixcmp(arg, "--abbrev=")) {
-                       abbrev = strtoul(arg + 9, NULL, 10);
-                       if (abbrev < MINIMUM_ABBREV)
-                               abbrev = MINIMUM_ABBREV;
-                       else if (abbrev > 40)
-                               abbrev = 40;
-                       continue;
-               }
-               if (!strcmp(arg, "-v")) {
-                       verbose = 1;
-                       continue;
-               }
-               if (!strcmp(arg, "--color")) {
-                       branch_use_color = 1;
-                       continue;
-               }
-               if (!strcmp(arg, "--no-color")) {
-                       branch_use_color = 0;
-                       continue;
-               }
-               usage(builtin_branch_usage);
-       }
-
-       if ((delete && rename) || (delete && force_create) ||
-           (rename && force_create))
-               usage(builtin_branch_usage);
+       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)
@@ -600,26 +596,25 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
        head = xstrdup(head);
        if (!strcmp(head, "HEAD")) {
                detached = 1;
-       }
-       else {
+       } else {
                if (prefixcmp(head, "refs/heads/"))
                        die("HEAD not found below refs/heads!");
                head += 11;
        }
 
        if (delete)
-               return delete_branches(argc - i, argv + i, force_delete, kinds);
-       else if (i == argc)
-               print_ref_list(kinds, detached, verbose, abbrev);
-       else if (rename && (i == argc - 1))
-               rename_branch(head, argv[i], force_rename);
-       else if (rename && (i == argc - 2))
-               rename_branch(argv[i], argv[i + 1], force_rename);
-       else if (i == argc - 1 || i == argc - 2)
-               create_branch(argv[i], (i == argc - 2) ? argv[i+1] : head,
+               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(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;
 }