t7700: test that 'repack -a' packs alternate packed objects
[gitweb.git] / builtin-name-rev.c
index f22c8b5f5da0031657f10ddb827d33a07056e3a5..08c8aabf9428447abad7def693d7b22c5330e180 100644 (file)
@@ -125,7 +125,7 @@ static int name_ref(const char *path, const unsigned char *sha1, int flags, void
 }
 
 /* returns a static buffer */
-static const char *get_rev_name(struct object *o)
+static const char *get_rev_name(const struct object *o)
 {
        static char buffer[1024];
        struct rev_name *n;
@@ -151,15 +151,77 @@ static const char *get_rev_name(struct object *o)
        }
 }
 
+static void show_name(const struct object *obj,
+                     const char *caller_name,
+                     int always, int allow_undefined, int name_only)
+{
+       const char *name;
+       const unsigned char *sha1 = obj->sha1;
+
+       if (!name_only)
+               printf("%s ", caller_name ? caller_name : sha1_to_hex(sha1));
+       name = get_rev_name(obj);
+       if (name)
+               printf("%s\n", name);
+       else if (allow_undefined)
+               printf("undefined\n");
+       else if (always)
+               printf("%s\n", find_unique_abbrev(sha1, DEFAULT_ABBREV));
+       else
+               die("cannot describe '%s'", sha1_to_hex(sha1));
+}
+
 static char const * const name_rev_usage[] = {
-       "git-name-rev [options] ( --all | --stdin | <commit>... )",
+       "git name-rev [options] ( --all | --stdin | <commit>... )",
        NULL
 };
 
+static void name_rev_line(char *p, struct name_ref_data *data)
+{
+       int forty = 0;
+       char *p_start;
+       for (p_start = p; *p; p++) {
+#define ishex(x) (isdigit((x)) || ((x) >= 'a' && (x) <= 'f'))
+               if (!ishex(*p))
+                       forty = 0;
+               else if (++forty == 40 &&
+                        !ishex(*(p+1))) {
+                       unsigned char sha1[40];
+                       const char *name = NULL;
+                       char c = *(p+1);
+                       int p_len = p - p_start + 1;
+
+                       forty = 0;
+
+                       *(p+1) = 0;
+                       if (!get_sha1(p - 39, sha1)) {
+                               struct object *o =
+                                       lookup_object(sha1);
+                               if (o)
+                                       name = get_rev_name(o);
+                       }
+                       *(p+1) = c;
+
+                       if (!name)
+                               continue;
+
+                       if (data->name_only)
+                               printf("%.*s%s", p_len - 40, p_start, name);
+                       else
+                               printf("%.*s (%s)", p_len, p_start, name);
+                       p_start = p + 1;
+               }
+       }
+
+       /* flush */
+       if (p_start != p)
+               fwrite(p_start, p - p_start, 1, stdout);
+}
+
 int cmd_name_rev(int argc, const char **argv, const char *prefix)
 {
        struct object_array revs = { 0, 0, NULL };
-       int all = 0, transform_stdin = 0, allow_undefined = 1;
+       int all = 0, transform_stdin = 0, allow_undefined = 1, always = 0;
        struct name_ref_data data = { 0, 0, NULL };
        struct option opts[] = {
                OPT_BOOLEAN(0, "name-only", &data.name_only, "print only names (no SHA-1)"),
@@ -170,10 +232,12 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
                OPT_BOOLEAN(0, "all", &all, "list all commits reachable from all refs"),
                OPT_BOOLEAN(0, "stdin", &transform_stdin, "read from stdin"),
                OPT_BOOLEAN(0, "undefined", &allow_undefined, "allow to print `undefined` names"),
+               OPT_BOOLEAN(0, "always",     &always,
+                          "show abbreviated commit object as fallback"),
                OPT_END(),
        };
 
-       git_config(git_default_config);
+       git_config(git_default_config, NULL);
        argc = parse_options(argc, argv, opts, name_rev_usage, 0);
        if (!!all + !!transform_stdin + !!argc > 1) {
                error("Specify either a list, or --all, not both!");
@@ -212,81 +276,29 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 
        if (transform_stdin) {
                char buffer[2048];
-               char *p, *p_start;
 
                while (!feof(stdin)) {
-                       int forty = 0;
-                       p = fgets(buffer, sizeof(buffer), stdin);
+                       char *p = fgets(buffer, sizeof(buffer), stdin);
                        if (!p)
                                break;
-
-                       for (p_start = p; *p; p++) {
-#define ishex(x) (isdigit((x)) || ((x) >= 'a' && (x) <= 'f'))
-                               if (!ishex(*p))
-                                       forty = 0;
-                               else if (++forty == 40 &&
-                                               !ishex(*(p+1))) {
-                                       unsigned char sha1[40];
-                                       const char *name = NULL;
-                                       char c = *(p+1);
-
-                                       forty = 0;
-
-                                       *(p+1) = 0;
-                                       if (!get_sha1(p - 39, sha1)) {
-                                               struct object *o =
-                                                       lookup_object(sha1);
-                                               if (o)
-                                                       name = get_rev_name(o);
-                                       }
-                                       *(p+1) = c;
-
-                                       if (!name)
-                                               continue;
-
-                                       fwrite(p_start, p - p_start + 1, 1, stdout);
-                                       printf(" (%s)", name);
-                                       p_start = p + 1;
-                               }
-                       }
-
-                       /* flush */
-                       if (p_start != p)
-                               fwrite(p_start, p - p_start, 1, stdout);
+                       name_rev_line(p, &data);
                }
        } else if (all) {
                int i, max;
 
                max = get_max_object_index();
                for (i = 0; i < max; i++) {
-                       struct object * obj = get_indexed_object(i);
-                       const char *name;
+                       struct object *obj = get_indexed_object(i);
                        if (!obj)
                                continue;
-                       if (!data.name_only)
-                               printf("%s ", sha1_to_hex(obj->sha1));
-                       name = get_rev_name(obj);
-                       if (name)
-                               printf("%s\n", name);
-                       else if (allow_undefined)
-                               printf("undefined\n");
-                       else
-                               die("cannot describe '%s'", sha1_to_hex(obj->sha1));
+                       show_name(obj, NULL,
+                                 always, allow_undefined, data.name_only);
                }
        } else {
                int i;
-               for (i = 0; i < revs.nr; i++) {
-                       const char *name;
-                       if (!data.name_only)
-                               printf("%s ", revs.objects[i].name);
-                       name = get_rev_name(revs.objects[i].item);
-                       if (name)
-                               printf("%s\n", name);
-                       else if (allow_undefined)
-                               printf("undefined\n");
-                       else
-                               die("cannot describe '%s'", sha1_to_hex(revs.objects[i].item->sha1));
-               }
+               for (i = 0; i < revs.nr; i++)
+                       show_name(revs.objects[i].item, revs.objects[i].name,
+                                 always, allow_undefined, data.name_only);
        }
 
        return 0;