replace: forbid replacing an object with one of a different type
[gitweb.git] / builtin / fetch.c
index cffa3f73669db703b628ca46daec183b88a3f0a8..d784b2e6947f1b5ace0016d92258e29377e9d1a7 100644 (file)
 #include "argv-array.h"
 
 static const char * const builtin_fetch_usage[] = {
-       "git fetch [<options>] [<repository> [<refspec>...]]",
-       "git fetch [<options>] <group>",
-       "git fetch --multiple [<options>] [(<repository> | <group>)...]",
-       "git fetch --all [<options>]",
+       N_("git fetch [<options>] [<repository> [<refspec>...]]"),
+       N_("git fetch [<options>] <group>"),
+       N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
+       N_("git fetch --all [<options>]"),
        NULL
 };
 
@@ -32,7 +32,7 @@ enum {
 
 static int all, append, dry_run, force, keep, multiple, prune, update_head_ok, verbosity;
 static int progress = -1, recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
-static int tags = TAGS_DEFAULT;
+static int tags = TAGS_DEFAULT, unshallow;
 static const char *depth;
 static const char *upload_pack;
 static struct strbuf default_rla = STRBUF_INIT;
@@ -57,36 +57,39 @@ static int option_parse_recurse_submodules(const struct option *opt,
 static struct option builtin_fetch_options[] = {
        OPT__VERBOSITY(&verbosity),
        OPT_BOOLEAN(0, "all", &all,
-                   "fetch from all remotes"),
+                   N_("fetch from all remotes")),
        OPT_BOOLEAN('a', "append", &append,
-                   "append to .git/FETCH_HEAD instead of overwriting"),
-       OPT_STRING(0, "upload-pack", &upload_pack, "path",
-                  "path to upload pack on remote end"),
-       OPT__FORCE(&force, "force overwrite of local branch"),
+                   N_("append to .git/FETCH_HEAD instead of overwriting")),
+       OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
+                  N_("path to upload pack on remote end")),
+       OPT__FORCE(&force, N_("force overwrite of local branch")),
        OPT_BOOLEAN('m', "multiple", &multiple,
-                   "fetch from multiple remotes"),
+                   N_("fetch from multiple remotes")),
        OPT_SET_INT('t', "tags", &tags,
-                   "fetch all tags and associated objects", TAGS_SET),
+                   N_("fetch all tags and associated objects"), TAGS_SET),
        OPT_SET_INT('n', NULL, &tags,
-                   "do not fetch all tags (--no-tags)", TAGS_UNSET),
+                   N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
        OPT_BOOLEAN('p', "prune", &prune,
-                   "prune remote-tracking branches no longer on remote"),
-       { OPTION_CALLBACK, 0, "recurse-submodules", NULL, "on-demand",
-                   "control recursive fetching of submodules",
+                   N_("prune remote-tracking branches no longer on remote")),
+       { OPTION_CALLBACK, 0, "recurse-submodules", NULL, N_("on-demand"),
+                   N_("control recursive fetching of submodules"),
                    PARSE_OPT_OPTARG, option_parse_recurse_submodules },
        OPT_BOOLEAN(0, "dry-run", &dry_run,
-                   "dry run"),
-       OPT_BOOLEAN('k', "keep", &keep, "keep downloaded pack"),
+                   N_("dry run")),
+       OPT_BOOLEAN('k', "keep", &keep, N_("keep downloaded pack")),
        OPT_BOOLEAN('u', "update-head-ok", &update_head_ok,
-                   "allow updating of HEAD ref"),
-       OPT_BOOL(0, "progress", &progress, "force progress reporting"),
-       OPT_STRING(0, "depth", &depth, "depth",
-                  "deepen history of shallow clone"),
-       { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, "dir",
-                  "prepend this to submodule path output", PARSE_OPT_HIDDEN },
+                   N_("allow updating of HEAD ref")),
+       OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
+       OPT_STRING(0, "depth", &depth, N_("depth"),
+                  N_("deepen history of shallow clone")),
+       { OPTION_SET_INT, 0, "unshallow", &unshallow, NULL,
+                  N_("convert to a complete repository"),
+                  PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 1 },
+       { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
+                  N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
        { OPTION_STRING, 0, "recurse-submodules-default",
                   &recurse_submodules_default, NULL,
-                  "default mode for recursion", PARSE_OPT_HIDDEN },
+                  N_("default mode for recursion"), PARSE_OPT_HIDDEN },
        OPT_END()
 };
 
@@ -116,7 +119,7 @@ static void add_merge_config(struct ref **head,
 
                for (rm = *head; rm; rm = rm->next) {
                        if (branch_merge_matches(branch, i, rm->name)) {
-                               rm->merge = 1;
+                               rm->fetch_head_status = FETCH_HEAD_MERGE;
                                break;
                        }
                }
@@ -137,7 +140,7 @@ static void add_merge_config(struct ref **head,
                refspec.src = branch->merge[i]->src;
                get_fetch_map(remote_refs, &refspec, tail, 1);
                for (rm = *old_tail; rm; rm = rm->next)
-                       rm->merge = 1;
+                       rm->fetch_head_status = FETCH_HEAD_MERGE;
        }
 }
 
@@ -157,6 +160,8 @@ static struct ref *get_ref_map(struct transport *transport,
        const struct ref *remote_refs = transport_get_remote_refs(transport);
 
        if (ref_count || tags == TAGS_SET) {
+               struct ref **old_tail;
+
                for (i = 0; i < ref_count; i++) {
                        get_fetch_map(remote_refs, &refs[i], &tail, 0);
                        if (refs[i].dst && refs[i].dst[0])
@@ -164,9 +169,23 @@ static struct ref *get_ref_map(struct transport *transport,
                }
                /* Merge everything on the command line, but not --tags */
                for (rm = ref_map; rm; rm = rm->next)
-                       rm->merge = 1;
+                       rm->fetch_head_status = FETCH_HEAD_MERGE;
                if (tags == TAGS_SET)
                        get_fetch_map(remote_refs, tag_refspec, &tail, 0);
+
+               /*
+                * For any refs that we happen to be fetching via command-line
+                * arguments, take the opportunity to update their configured
+                * counterparts. However, we do not want to mention these
+                * entries in FETCH_HEAD at all, as they would simply be
+                * duplicates of existing entries.
+                */
+               old_tail = tail;
+               for (i = 0; i < transport->remote->fetch_refspec_nr; i++)
+                       get_fetch_map(ref_map, &transport->remote->fetch[i],
+                                     &tail, 1);
+               for (rm = *old_tail; rm; rm = rm->next)
+                       rm->fetch_head_status = FETCH_HEAD_IGNORE;
        } else {
                /* Use the defaults */
                struct remote *remote = transport->remote;
@@ -183,7 +202,7 @@ static struct ref *get_ref_map(struct transport *transport,
                                        *autotags = 1;
                                if (!i && !has_merge && ref_map &&
                                    !remote->fetch[0].pattern)
-                                       ref_map->merge = 1;
+                                       ref_map->fetch_head_status = FETCH_HEAD_MERGE;
                        }
                        /*
                         * if the remote we're fetching from is the same
@@ -199,7 +218,7 @@ static struct ref *get_ref_map(struct transport *transport,
                        ref_map = get_remote_ref(remote_refs, "HEAD");
                        if (!ref_map)
                                die(_("Couldn't find remote ref HEAD"));
-                       ref_map->merge = 1;
+                       ref_map->fetch_head_status = FETCH_HEAD_MERGE;
                        tail = &ref_map->next;
                }
        }
@@ -256,9 +275,8 @@ static int update_local_ref(struct ref *ref,
        if (!hashcmp(ref->old_sha1, ref->new_sha1)) {
                if (verbosity > 0)
                        strbuf_addf(display, "= %-*s %-*s -> %s",
-                                   TRANSPORT_SUMMARY_WIDTH,
-                                   _("[up to date]"), REFCOL_WIDTH,
-                                   remote, pretty_ref);
+                                   TRANSPORT_SUMMARY(_("[up to date]")),
+                                   REFCOL_WIDTH, remote, pretty_ref);
                return 0;
        }
 
@@ -272,7 +290,7 @@ static int update_local_ref(struct ref *ref,
                 */
                strbuf_addf(display,
                            _("! %-*s %-*s -> %s  (can't fetch in current branch)"),
-                           TRANSPORT_SUMMARY_WIDTH, _("[rejected]"),
+                           TRANSPORT_SUMMARY(_("[rejected]")),
                            REFCOL_WIDTH, remote, pretty_ref);
                return 1;
        }
@@ -283,7 +301,7 @@ static int update_local_ref(struct ref *ref,
                r = s_update_ref("updating tag", ref, 0);
                strbuf_addf(display, "%c %-*s %-*s -> %s%s",
                            r ? '!' : '-',
-                           TRANSPORT_SUMMARY_WIDTH, _("[tag update]"),
+                           TRANSPORT_SUMMARY(_("[tag update]")),
                            REFCOL_WIDTH, remote, pretty_ref,
                            r ? _("  (unable to update local ref)") : "");
                return r;
@@ -318,13 +336,13 @@ static int update_local_ref(struct ref *ref,
                r = s_update_ref(msg, ref, 0);
                strbuf_addf(display, "%c %-*s %-*s -> %s%s",
                            r ? '!' : '*',
-                           TRANSPORT_SUMMARY_WIDTH, what,
+                           TRANSPORT_SUMMARY(what),
                            REFCOL_WIDTH, remote, pretty_ref,
                            r ? _("  (unable to update local ref)") : "");
                return r;
        }
 
-       if (in_merge_bases(current, &updated, 1)) {
+       if (in_merge_bases(current, updated)) {
                char quickref[83];
                int r;
                strcpy(quickref, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV));
@@ -358,7 +376,7 @@ static int update_local_ref(struct ref *ref,
                return r;
        } else {
                strbuf_addf(display, "! %-*s %-*s -> %s  %s",
-                           TRANSPORT_SUMMARY_WIDTH, _("[rejected]"),
+                           TRANSPORT_SUMMARY(_("[rejected]")),
                            REFCOL_WIDTH, remote, pretty_ref,
                            _("(non-fast-forward)"));
                return 1;
@@ -387,7 +405,7 @@ static int store_updated_refs(const char *raw_url, const char *remote_name,
        const char *what, *kind;
        struct ref *rm;
        char *url, *filename = dry_run ? "/dev/null" : git_path("FETCH_HEAD");
-       int want_merge;
+       int want_status;
 
        fp = fopen(filename, "a");
        if (!fp)
@@ -405,19 +423,22 @@ static int store_updated_refs(const char *raw_url, const char *remote_name,
        }
 
        /*
-        * The first pass writes objects to be merged and then the
-        * second pass writes the rest, in order to allow using
-        * FETCH_HEAD as a refname to refer to the ref to be merged.
+        * We do a pass for each fetch_head_status type in their enum order, so
+        * merged entries are written before not-for-merge. That lets readers
+        * use FETCH_HEAD as a refname to refer to the ref to be merged.
         */
-       for (want_merge = 1; 0 <= want_merge; want_merge--) {
+       for (want_status = FETCH_HEAD_MERGE;
+            want_status <= FETCH_HEAD_IGNORE;
+            want_status++) {
                for (rm = ref_map; rm; rm = rm->next) {
                        struct ref *ref = NULL;
+                       const char *merge_status_marker = "";
 
                        commit = lookup_commit_reference_gently(rm->old_sha1, 1);
                        if (!commit)
-                               rm->merge = 0;
+                               rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
 
-                       if (rm->merge != want_merge)
+                       if (rm->fetch_head_status != want_status)
                                continue;
 
                        if (rm->peer_ref) {
@@ -463,16 +484,26 @@ static int store_updated_refs(const char *raw_url, const char *remote_name,
                                        strbuf_addf(&note, "%s ", kind);
                                strbuf_addf(&note, "'%s' of ", what);
                        }
-                       fprintf(fp, "%s\t%s\t%s",
-                               sha1_to_hex(rm->old_sha1),
-                               rm->merge ? "" : "not-for-merge",
-                               note.buf);
-                       for (i = 0; i < url_len; ++i)
-                               if ('\n' == url[i])
-                                       fputs("\\n", fp);
-                               else
-                                       fputc(url[i], fp);
-                       fputc('\n', fp);
+                       switch (rm->fetch_head_status) {
+                       case FETCH_HEAD_NOT_FOR_MERGE:
+                               merge_status_marker = "not-for-merge";
+                               /* fall-through */
+                       case FETCH_HEAD_MERGE:
+                               fprintf(fp, "%s\t%s\t%s",
+                                       sha1_to_hex(rm->old_sha1),
+                                       merge_status_marker,
+                                       note.buf);
+                               for (i = 0; i < url_len; ++i)
+                                       if ('\n' == url[i])
+                                               fputs("\\n", fp);
+                                       else
+                                               fputc(url[i], fp);
+                               fputc('\n', fp);
+                               break;
+                       default:
+                               /* do not write anything to FETCH_HEAD */
+                               break;
+                       }
 
                        strbuf_reset(&note);
                        if (ref) {
@@ -555,7 +586,7 @@ static int prune_refs(struct refspec *refs, int ref_count, struct ref *ref_map)
                        result |= delete_ref(ref->name, NULL, 0);
                if (verbosity >= 0) {
                        fprintf(stderr, " x %-*s %-*s -> %s\n",
-                               TRANSPORT_SUMMARY_WIDTH, _("[deleted]"),
+                               TRANSPORT_SUMMARY(_("[deleted]")),
                                REFCOL_WIDTH, _("(none)"), prettify_refname(ref->name));
                        warn_dangling_symref(stderr, dangling_msg, ref->name);
                }
@@ -569,7 +600,8 @@ static int add_existing(const char *refname, const unsigned char *sha1,
 {
        struct string_list *list = (struct string_list *)cbdata;
        struct string_list_item *item = string_list_insert(list, refname);
-       item->util = (void *)sha1;
+       item->util = xmalloc(20);
+       hashcpy(item->util, sha1);
        return 0;
 }
 
@@ -588,7 +620,7 @@ static void find_non_local_tags(struct transport *transport,
                        struct ref **head,
                        struct ref ***tail)
 {
-       struct string_list existing_refs = STRING_LIST_INIT_NODUP;
+       struct string_list existing_refs = STRING_LIST_INIT_DUP;
        struct string_list remote_refs = STRING_LIST_INIT_NODUP;
        const struct ref *ref;
        struct string_list_item *item = NULL;
@@ -634,7 +666,7 @@ static void find_non_local_tags(struct transport *transport,
                item = string_list_insert(&remote_refs, ref->name);
                item->util = (void *)ref->old_sha1;
        }
-       string_list_clear(&existing_refs, 0);
+       string_list_clear(&existing_refs, 1);
 
        /*
         * We may have a final lightweight tag that needs to be
@@ -691,11 +723,11 @@ static int truncate_fetch_head(void)
 static int do_fetch(struct transport *transport,
                    struct refspec *refs, int ref_count)
 {
-       struct string_list existing_refs = STRING_LIST_INIT_NODUP;
-       struct string_list_item *peer_item = NULL;
+       struct string_list existing_refs = STRING_LIST_INIT_DUP;
        struct ref *ref_map;
        struct ref *rm;
        int autotags = (transport->remote->fetch_tags == 1);
+       int retcode = 0;
 
        for_each_ref(add_existing, &existing_refs);
 
@@ -711,9 +743,9 @@ static int do_fetch(struct transport *transport,
 
        /* if not appending, truncate FETCH_HEAD */
        if (!append && !dry_run) {
-               int errcode = truncate_fetch_head();
-               if (errcode)
-                       return errcode;
+               retcode = truncate_fetch_head();
+               if (retcode)
+                       goto cleanup;
        }
 
        ref_map = get_ref_map(transport, refs, ref_count, tags, &autotags);
@@ -722,8 +754,9 @@ static int do_fetch(struct transport *transport,
 
        for (rm = ref_map; rm; rm = rm->next) {
                if (rm->peer_ref) {
-                       peer_item = string_list_lookup(&existing_refs,
-                                                      rm->peer_ref->name);
+                       struct string_list_item *peer_item =
+                               string_list_lookup(&existing_refs,
+                                                  rm->peer_ref->name);
                        if (peer_item)
                                hashcpy(rm->peer_ref->old_sha1,
                                        peer_item->util);
@@ -734,7 +767,8 @@ static int do_fetch(struct transport *transport,
                transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
        if (fetch_refs(transport, ref_map)) {
                free_refs(ref_map);
-               return 1;
+               retcode = 1;
+               goto cleanup;
        }
        if (prune) {
                /* If --tags was specified, pretend the user gave us the canonical tags refspec */
@@ -777,7 +811,9 @@ static int do_fetch(struct transport *transport,
                free_refs(ref_map);
        }
 
-       return 0;
+ cleanup:
+       string_list_clear(&existing_refs, 1);
+       return retcode;
 }
 
 static void set_option(const char *name, const char *value)
@@ -974,6 +1010,18 @@ int cmd_fetch(int argc, const char **argv, const char *prefix)
        argc = parse_options(argc, argv, prefix,
                             builtin_fetch_options, builtin_fetch_usage, 0);
 
+       if (unshallow) {
+               if (depth)
+                       die(_("--depth and --unshallow cannot be used together"));
+               else if (!is_repository_shallow())
+                       die(_("--unshallow on a complete repository does not make sense"));
+               else {
+                       static char inf_depth[12];
+                       sprintf(inf_depth, "%d", INFINITE_DEPTH);
+                       depth = inf_depth;
+               }
+       }
+
        if (recurse_submodules != RECURSE_SUBMODULES_OFF) {
                if (recurse_submodules_default) {
                        int arg = parse_fetch_recurse_submodules_arg("--recurse-submodules-default", recurse_submodules_default);