Allow the user to control the verbosity of merge-recursive.
[gitweb.git] / builtin-branch.c
index 903d5cf05600f9a7e297dc9450ad5980388072e9..c760e188ea4169d878986ebd0d6c22702802aa59 100644 (file)
@@ -12,7 +12,7 @@
 #include "builtin.h"
 
 static const char builtin_branch_usage[] =
-  "git-branch [-r] (-d | -D) <branchname> | [-l] [-f] <branchname> [<start-point>] | (-m | -M) [<oldbranch>] <newbranch> | [-r | -a] [-v [--abbrev=<length>]]";
+  "git-branch [-r] (-d | -D) <branchname> | [-l] [-f] <branchname> [<start-point>] | (-m | -M) [<oldbranch>] <newbranch> | [--color | --no-color] [-r | -a] [-v [--abbrev=<length>]]";
 
 #define REF_UNKNOWN_TYPE    0x00
 #define REF_LOCAL_BRANCH    0x01
@@ -74,25 +74,6 @@ const char *branch_get_color(enum color_branch ix)
        return "";
 }
 
-static int in_merge_bases(const unsigned char *sha1,
-                         struct commit *rev1,
-                         struct commit *rev2)
-{
-       struct commit_list *bases, *b;
-       int ret = 0;
-
-       bases = get_merge_bases(rev1, rev2, 1);
-       for (b = bases; b; b = b->next) {
-               if (!hashcmp(sha1, b->item->object.sha1)) {
-                       ret = 1;
-                       break;
-               }
-       }
-
-       free_commit_list(bases);
-       return ret;
-}
-
 static int delete_branches(int argc, const char **argv, int force, int kinds)
 {
        struct commit *rev, *head_rev = head_rev;
@@ -153,7 +134,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds)
                 */
 
                if (!force &&
-                   !in_merge_bases(sha1, rev, head_rev)) {
+                   !in_merge_bases(rev, head_rev)) {
                        error("The branch '%s' is not a strict subset of "
                                "your current HEAD.\n"
                                "If you are sure you want to delete it, "
@@ -250,29 +231,54 @@ static int ref_cmp(const void *r1, const void *r2)
        return strcmp(c1->name, c2->name);
 }
 
-static void print_ref_info(const unsigned char *sha1, int abbrev)
+static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
+                          int abbrev, int current)
 {
+       char c;
+       int color;
        struct commit *commit;
        char subject[256];
 
+       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;
+       }
 
-       commit = lookup_commit(sha1);
-       if (commit && !parse_commit(commit))
-               pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
-                                   subject, sizeof(subject), 0,
-                                   NULL, NULL, 0);
-       else
-               strcpy(subject, " **** invalid ref ****");
+       c = ' ';
+       if (current) {
+               c = '*';
+               color = COLOR_BRANCH_CURRENT;
+       }
 
-       printf(" %s %s\n", find_unique_abbrev(sha1, abbrev), subject);
+       if (verbose) {
+               commit = lookup_commit(item->sha1);
+               if (commit && !parse_commit(commit))
+                       pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
+                                           subject, sizeof(subject), 0,
+                                           NULL, NULL, 0);
+               else
+                       strcpy(subject, " **** invalid ref ****");
+               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), 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 verbose, int abbrev)
+static void print_ref_list(int kinds, int detached, int verbose, int abbrev)
 {
        int i;
-       char c;
        struct ref_list ref_list;
-       int color;
 
        memset(&ref_list, 0, sizeof(ref_list));
        ref_list.kinds = kinds;
@@ -280,45 +286,30 @@ static void print_ref_list(int kinds, int verbose, int abbrev)
 
        qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);
 
-       for (i = 0; i < ref_list.index; i++) {
-               switch( ref_list.list[i].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;
-               }
-
-               c = ' ';
-               if (ref_list.list[i].kind == REF_LOCAL_BRANCH &&
-                               !strcmp(ref_list.list[i].name, head)) {
-                       c = '*';
-                       color = COLOR_BRANCH_CURRENT;
-               }
+       detached = (detached && (kinds & REF_LOCAL_BRANCH));
+       if (detached) {
+               struct ref_item item;
+               item.name = "(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);
+       }
 
-               if (verbose) {
-                       printf("%c %s%-*s%s", c,
-                                       branch_get_color(color),
-                                       ref_list.maxwidth,
-                                       ref_list.list[i].name,
-                                       branch_get_color(COLOR_BRANCH_RESET));
-                       print_ref_info(ref_list.list[i].sha1, abbrev);
-               }
-               else
-                       printf("%c %s%s%s\n", c,
-                                       branch_get_color(color),
-                                       ref_list.list[i].name,
-                                       branch_get_color(COLOR_BRANCH_RESET));
+       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 create_branch(const char *name, const char *start,
+static void create_branch(const char *name, const char *start_name,
+                         unsigned char *start_sha1,
                          int force, int reflog)
 {
        struct ref_lock *lock;
@@ -337,9 +328,14 @@ static void create_branch(const char *name, const char *start,
                        die("Cannot force update the current branch.");
        }
 
-       if (get_sha1(start, sha1) ||
-           (commit = lookup_commit_reference(sha1)) == NULL)
-               die("Not a valid branch point: '%s'.", start);
+       if (start_sha1)
+               /* detached HEAD */
+               hashcpy(sha1, start_sha1);
+       else if (get_sha1(start_name, sha1))
+               die("Not a valid object name: '%s'.", start_name);
+
+       if ((commit = lookup_commit_reference(sha1)) == NULL)
+               die("Not a valid branch point: '%s'.", start_name);
        hashcpy(sha1, commit->object.sha1);
 
        lock = lock_any_ref_for_update(ref, NULL);
@@ -348,7 +344,8 @@ static void create_branch(const char *name, const char *start,
 
        if (reflog) {
                log_all_ref_updates = 1;
-               snprintf(msg, sizeof msg, "branch: Created from %s", start);
+               snprintf(msg, sizeof msg, "branch: Created from %s",
+                        start_name);
        }
 
        if (write_ref_sha1(lock, sha1, msg) < 0)
@@ -360,6 +357,9 @@ 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];
 
+       if (!oldname)
+               die("cannot rename the curren branch while not on any.");
+
        if (snprintf(oldref, sizeof(oldref), "refs/heads/%s", oldname) > sizeof(oldref))
                die("Old branchname too long");
 
@@ -389,7 +389,7 @@ 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 verbose = 0, abbrev = DEFAULT_ABBREV;
+       int verbose = 0, abbrev = DEFAULT_ABBREV, detached = 0;
        int reflog = 0;
        int kinds = REF_LOCAL_BRANCH;
        int i;
@@ -466,22 +466,27 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
        head = xstrdup(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;
+       if (!strcmp(head, "HEAD")) {
+               detached = 1;
+       }
+       else {
+               if (strncmp(head, "refs/heads/", 11))
+                       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, verbose, abbrev);
+               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)
-               create_branch(argv[i], head, force_create, reflog);
+               create_branch(argv[i], head, head_sha1, force_create, reflog);
        else if (i == argc - 2)
-               create_branch(argv[i], argv[i + 1], force_create, reflog);
+               create_branch(argv[i], argv[i+1], NULL, force_create, reflog);
        else
                usage(builtin_branch_usage);