t/helper/test-ref-store.c

   1 #include "test-tool.h"
   2 #include "hex.h"
   3 #include "refs.h"
   4 #include "setup.h"
   5 #include "worktree.h"
   6 #include "object-store-ll.h"
   7 #include "path.h"
   8 #include "repository.h"
   9 #include "strbuf.h"
  10 #include "revision.h"
  11
  12 struct flag_definition {
  13         const char *name;
  14         uint64_t mask;
  15 };
  16
  17 #define FLAG_DEF(x)     \
  18         {               \
  19 #x, (x) \
  20         }
  21
  22 static unsigned int parse_flags(const char *str, struct flag_definition *defs)
  23 {
  24         struct string_list masks = STRING_LIST_INIT_DUP;
  25         int i = 0;
  26         unsigned int result = 0;
  27
  28         if (!strcmp(str, "0"))
  29                 return 0;
  30
  31         string_list_split(&masks, str, ',', 64);
  32         for (; i < masks.nr; i++) {
  33                 const char *name = masks.items[i].string;
  34                 struct flag_definition *def = defs;
  35                 int found = 0;
  36                 while (def->name) {
  37                         if (!strcmp(def->name, name)) {
  38                                 result |= def->mask;
  39                                 found = 1;
  40                                 break;
  41                         }
  42                         def++;
  43                 }
  44                 if (!found)
  45                         die("unknown flag \"%s\"", name);
  46         }
  47
  48         string_list_clear(&masks, 0);
  49         return result;
  50 }
  51
  52 static struct flag_definition empty_flags[] = { { NULL, 0 } };
  53
  54 static const char *notnull(const char *arg, const char *name)
  55 {
  56         if (!arg)
  57                 die("%s required", name);
  58         return arg;
  59 }
  60
  61 static unsigned int arg_flags(const char *arg, const char *name,
  62                               struct flag_definition *defs)
  63 {
  64         return parse_flags(notnull(arg, name), defs);
  65 }
  66
  67 static const char **get_store(const char **argv, struct ref_store **refs)
  68 {
  69         const char *gitdir;
  70
  71         if (!argv[0]) {
  72                 die("ref store required");
  73         } else if (!strcmp(argv[0], "main")) {
  74                 *refs = get_main_ref_store(the_repository);
  75         } else if (skip_prefix(argv[0], "submodule:", &gitdir)) {
  76                 struct strbuf sb = STRBUF_INIT;
  77                 int ret;
  78
  79                 ret = strbuf_git_path_submodule(&sb, gitdir, "objects/");
  80                 if (ret)
  81                         die("strbuf_git_path_submodule failed: %d", ret);
  82                 add_to_alternates_memory(sb.buf);
  83                 strbuf_release(&sb);
  84
  85                 *refs = get_submodule_ref_store(gitdir);
  86         } else if (skip_prefix(argv[0], "worktree:", &gitdir)) {
  87                 struct worktree **p, **worktrees = get_worktrees();
  88
  89                 for (p = worktrees; *p; p++) {
  90                         struct worktree *wt = *p;
  91
  92                         if (!wt->id) {
  93                                 /* special case for main worktree */
  94                                 if (!strcmp(gitdir, "main"))
  95                                         break;
  96                         } else if (!strcmp(gitdir, wt->id))
  97                                 break;
  98                 }
  99                 if (!*p)
 100                         die("no such worktree: %s", gitdir);
 101
 102                 *refs = get_worktree_ref_store(*p);
 103                 free_worktrees(worktrees);
 104         } else
 105                 die("unknown backend %s", argv[0]);
 106
 107         if (!*refs)
 108                 die("no ref store");
 109
 110         /* consume store-specific optional arguments if needed */
 111
 112         return argv + 1;
 113 }
 114
 115 static int cmd_create_symref(struct ref_store *refs, const char **argv)
 116 {
 117         const char *refname = notnull(*argv++, "refname");
 118         const char *target = notnull(*argv++, "target");
 119         const char *logmsg = *argv++;
 120
 121         return refs_update_symref(refs, refname, target, logmsg);
 122 }
 123
 124 static struct flag_definition transaction_flags[] = {
 125         FLAG_DEF(REF_NO_DEREF),
 126         FLAG_DEF(REF_FORCE_CREATE_REFLOG),
 127         FLAG_DEF(REF_SKIP_OID_VERIFICATION),
 128         FLAG_DEF(REF_SKIP_REFNAME_VERIFICATION),
 129         { NULL, 0 }
 130 };
 131
 132 static int cmd_delete_refs(struct ref_store *refs, const char **argv)
 133 {
 134         unsigned int flags = arg_flags(*argv++, "flags", transaction_flags);
 135         const char *msg = *argv++;
 136         struct string_list refnames = STRING_LIST_INIT_NODUP;
 137         int result;
 138
 139         while (*argv)
 140                 string_list_append(&refnames, *argv++);
 141
 142         result = refs_delete_refs(refs, msg, &refnames, flags);
 143         string_list_clear(&refnames, 0);
 144         return result;
 145 }
 146
 147 static int cmd_rename_ref(struct ref_store *refs, const char **argv)
 148 {
 149         const char *oldref = notnull(*argv++, "oldref");
 150         const char *newref = notnull(*argv++, "newref");
 151         const char *logmsg = *argv++;
 152
 153         return refs_rename_ref(refs, oldref, newref, logmsg);
 154 }
 155
 156 static int each_ref(const char *refname, const struct object_id *oid,
 157                     int flags, void *cb_data UNUSED)
 158 {
 159         printf("%s %s 0x%x\n", oid_to_hex(oid), refname, flags);
 160         return 0;
 161 }
 162
 163 static int cmd_for_each_ref(struct ref_store *refs, const char **argv)
 164 {
 165         const char *prefix = notnull(*argv++, "prefix");
 166
 167         return refs_for_each_ref_in(refs, prefix, each_ref, NULL);
 168 }
 169
 170 static int cmd_for_each_ref__exclude(struct ref_store *refs, const char **argv)
 171 {
 172         const char *prefix = notnull(*argv++, "prefix");
 173         const char **exclude_patterns = argv;
 174
 175         return refs_for_each_fullref_in(refs, prefix, exclude_patterns, each_ref,
 176                                         NULL);
 177 }
 178
 179 static int cmd_resolve_ref(struct ref_store *refs, const char **argv)
 180 {
 181         struct object_id oid = *null_oid();
 182         const char *refname = notnull(*argv++, "refname");
 183         int resolve_flags = arg_flags(*argv++, "resolve-flags", empty_flags);
 184         int flags;
 185         const char *ref;
 186
 187         ref = refs_resolve_ref_unsafe(refs, refname, resolve_flags,
 188                                       &oid, &flags);
 189         printf("%s %s 0x%x\n", oid_to_hex(&oid), ref ? ref : "(null)", flags);
 190         return ref ? 0 : 1;
 191 }
 192
 193 static int cmd_verify_ref(struct ref_store *refs, const char **argv)
 194 {
 195         const char *refname = notnull(*argv++, "refname");
 196         struct strbuf err = STRBUF_INIT;
 197         int ret;
 198
 199         ret = refs_verify_refname_available(refs, refname, NULL, NULL, &err);
 200         if (err.len)
 201                 puts(err.buf);
 202         return ret;
 203 }
 204
 205 static int each_reflog(const char *refname, void *cb_data UNUSED)
 206 {
 207         printf("%s\n", refname);
 208         return 0;
 209 }
 210
 211 static int cmd_for_each_reflog(struct ref_store *refs,
 212                                const char **argv UNUSED)
 213 {
 214         return refs_for_each_reflog(refs, each_reflog, NULL);
 215 }
 216
 217 static int each_reflog_ent(struct object_id *old_oid, struct object_id *new_oid,
 218                            const char *committer, timestamp_t timestamp,
 219                            int tz, const char *msg, void *cb_data UNUSED)
 220 {
 221         printf("%s %s %s %" PRItime " %+05d%s%s", oid_to_hex(old_oid),
 222                oid_to_hex(new_oid), committer, timestamp, tz,
 223                *msg == '\n' ? "" : "\t", msg);
 224         return 0;
 225 }
 226
 227 static int cmd_for_each_reflog_ent(struct ref_store *refs, const char **argv)
 228 {
 229         const char *refname = notnull(*argv++, "refname");
 230
 231         return refs_for_each_reflog_ent(refs, refname, each_reflog_ent, refs);
 232 }
 233
 234 static int cmd_for_each_reflog_ent_reverse(struct ref_store *refs, const char **argv)
 235 {
 236         const char *refname = notnull(*argv++, "refname");
 237
 238         return refs_for_each_reflog_ent_reverse(refs, refname, each_reflog_ent, refs);
 239 }
 240
 241 static int cmd_reflog_exists(struct ref_store *refs, const char **argv)
 242 {
 243         const char *refname = notnull(*argv++, "refname");
 244
 245         return !refs_reflog_exists(refs, refname);
 246 }
 247
 248 static int cmd_create_reflog(struct ref_store *refs, const char **argv)
 249 {
 250         const char *refname = notnull(*argv++, "refname");
 251         struct strbuf err = STRBUF_INIT;
 252         int ret;
 253
 254         ret = refs_create_reflog(refs, refname, &err);
 255         if (err.len)
 256                 puts(err.buf);
 257         return ret;
 258 }
 259
 260 static int cmd_delete_reflog(struct ref_store *refs, const char **argv)
 261 {
 262         const char *refname = notnull(*argv++, "refname");
 263
 264         return refs_delete_reflog(refs, refname);
 265 }
 266
 267 static int cmd_delete_ref(struct ref_store *refs, const char **argv)
 268 {
 269         const char *msg = notnull(*argv++, "msg");
 270         const char *refname = notnull(*argv++, "refname");
 271         const char *sha1_buf = notnull(*argv++, "old-sha1");
 272         unsigned int flags = arg_flags(*argv++, "flags", transaction_flags);
 273         struct object_id old_oid;
 274
 275         if (get_oid_hex(sha1_buf, &old_oid))
 276                 die("cannot parse %s as %s", sha1_buf, the_hash_algo->name);
 277
 278         return refs_delete_ref(refs, msg, refname, &old_oid, flags);
 279 }
 280
 281 static int cmd_update_ref(struct ref_store *refs, const char **argv)
 282 {
 283         const char *msg = notnull(*argv++, "msg");
 284         const char *refname = notnull(*argv++, "refname");
 285         const char *new_sha1_buf = notnull(*argv++, "new-sha1");
 286         const char *old_sha1_buf = notnull(*argv++, "old-sha1");
 287         unsigned int flags = arg_flags(*argv++, "flags", transaction_flags);
 288         struct object_id old_oid, *old_oid_ptr = NULL;
 289         struct object_id new_oid;
 290
 291         if (*old_sha1_buf) {
 292                 if (get_oid_hex(old_sha1_buf, &old_oid))
 293                         die("cannot parse %s as %s", old_sha1_buf, the_hash_algo->name);
 294                 old_oid_ptr = &old_oid;
 295         }
 296         if (get_oid_hex(new_sha1_buf, &new_oid))
 297                 die("cannot parse %s as %s", new_sha1_buf, the_hash_algo->name);
 298
 299         return refs_update_ref(refs, msg, refname,
 300                                &new_oid, old_oid_ptr,
 301                                flags, UPDATE_REFS_DIE_ON_ERR);
 302 }
 303
 304 struct command {
 305         const char *name;
 306         int (*func)(struct ref_store *refs, const char **argv);
 307 };
 308
 309 static struct command commands[] = {
 310         { "create-symref", cmd_create_symref },
 311         { "delete-refs", cmd_delete_refs },
 312         { "rename-ref", cmd_rename_ref },
 313         { "for-each-ref", cmd_for_each_ref },
 314         { "for-each-ref--exclude", cmd_for_each_ref__exclude },
 315         { "resolve-ref", cmd_resolve_ref },
 316         { "verify-ref", cmd_verify_ref },
 317         { "for-each-reflog", cmd_for_each_reflog },
 318         { "for-each-reflog-ent", cmd_for_each_reflog_ent },
 319         { "for-each-reflog-ent-reverse", cmd_for_each_reflog_ent_reverse },
 320         { "reflog-exists", cmd_reflog_exists },
 321         { "create-reflog", cmd_create_reflog },
 322         { "delete-reflog", cmd_delete_reflog },
 323         /*
 324          * backend transaction functions can't be tested separately
 325          */
 326         { "delete-ref", cmd_delete_ref },
 327         { "update-ref", cmd_update_ref },
 328         { NULL, NULL }
 329 };
 330
 331 int cmd__ref_store(int argc UNUSED, const char **argv)
 332 {
 333         struct ref_store *refs;
 334         const char *func;
 335         struct command *cmd;
 336
 337         setup_git_directory();
 338
 339         argv = get_store(argv + 1, &refs);
 340
 341         func = *argv++;
 342         if (!func)
 343                 die("ref function required");
 344         for (cmd = commands; cmd->name; cmd++) {
 345                 if (!strcmp(func, cmd->name))
 346                         return cmd->func(refs, argv);
 347         }
 348         die("unknown function %s", func);
 349         return 0;
 350 }