bisect: use oid_to_hex() for converting object_id hashes to hex strings
[gitweb.git] / unpack-trees.c
index 8e2032f4e592910d6f3336f95019647992113877..3a8ee19fe837aae6939c3a6b902f6b067dcde9e4 100644 (file)
@@ -52,46 +52,115 @@ static const char *unpack_plumbing_errors[NB_UNPACK_TREES_ERROR_TYPES] = {
          ? ((o)->msgs[(type)])      \
          : (unpack_plumbing_errors[(type)]) )
 
+static const char *super_prefixed(const char *path)
+{
+       /*
+        * It is necessary and sufficient to have two static buffers
+        * here, as the return value of this function is fed to
+        * error() using the unpack_*_errors[] templates we see above.
+        */
+       static struct strbuf buf[2] = {STRBUF_INIT, STRBUF_INIT};
+       static int super_prefix_len = -1;
+       static unsigned idx = ARRAY_SIZE(buf) - 1;
+
+       if (super_prefix_len < 0) {
+               const char *super_prefix = get_super_prefix();
+               if (!super_prefix) {
+                       super_prefix_len = 0;
+               } else {
+                       int i;
+                       for (i = 0; i < ARRAY_SIZE(buf); i++)
+                               strbuf_addstr(&buf[i], super_prefix);
+                       super_prefix_len = buf[0].len;
+               }
+       }
+
+       if (!super_prefix_len)
+               return path;
+
+       if (++idx >= ARRAY_SIZE(buf))
+               idx = 0;
+
+       strbuf_setlen(&buf[idx], super_prefix_len);
+       strbuf_addstr(&buf[idx], path);
+
+       return buf[idx].buf;
+}
+
 void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
                                  const char *cmd)
 {
        int i;
        const char **msgs = opts->msgs;
        const char *msg;
-       const char *cmd2 = strcmp(cmd, "checkout") ? cmd : "switch branches";
 
-       if (advice_commit_before_merge)
-               msg = "Your local changes to the following files would be overwritten by %s:\n%%s"
-                       "Please, commit your changes or stash them before you can %s.";
+       if (!strcmp(cmd, "checkout"))
+               msg = advice_commit_before_merge
+                     ? _("Your local changes to the following files would be overwritten by checkout:\n%%s"
+                         "Please commit your changes or stash them before you switch branches.")
+                     : _("Your local changes to the following files would be overwritten by checkout:\n%%s");
+       else if (!strcmp(cmd, "merge"))
+               msg = advice_commit_before_merge
+                     ? _("Your local changes to the following files would be overwritten by merge:\n%%s"
+                         "Please commit your changes or stash them before you merge.")
+                     : _("Your local changes to the following files would be overwritten by merge:\n%%s");
        else
-               msg = "Your local changes to the following files would be overwritten by %s:\n%%s";
+               msg = advice_commit_before_merge
+                     ? _("Your local changes to the following files would be overwritten by %s:\n%%s"
+                         "Please commit your changes or stash them before you %s.")
+                     : _("Your local changes to the following files would be overwritten by %s:\n%%s");
        msgs[ERROR_WOULD_OVERWRITE] = msgs[ERROR_NOT_UPTODATE_FILE] =
-               xstrfmt(msg, cmd, cmd2);
+               xstrfmt(msg, cmd, cmd);
 
        msgs[ERROR_NOT_UPTODATE_DIR] =
-               "Updating the following directories would lose untracked files in it:\n%s";
-
-       if (advice_commit_before_merge)
-               msg = "The following untracked working tree files would be %s by %s:\n%%s"
-                       "Please move or remove them before you can %s.";
+               _("Updating the following directories would lose untracked files in them:\n%s");
+
+       if (!strcmp(cmd, "checkout"))
+               msg = advice_commit_before_merge
+                     ? _("The following untracked working tree files would be removed by checkout:\n%%s"
+                         "Please move or remove them before you switch branches.")
+                     : _("The following untracked working tree files would be removed by checkout:\n%%s");
+       else if (!strcmp(cmd, "merge"))
+               msg = advice_commit_before_merge
+                     ? _("The following untracked working tree files would be removed by merge:\n%%s"
+                         "Please move or remove them before you merge.")
+                     : _("The following untracked working tree files would be removed by merge:\n%%s");
        else
-               msg = "The following untracked working tree files would be %s by %s:\n%%s";
-
-       msgs[ERROR_WOULD_LOSE_UNTRACKED_REMOVED] = xstrfmt(msg, "removed", cmd, cmd2);
-       msgs[ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN] = xstrfmt(msg, "overwritten", cmd, cmd2);
+               msg = advice_commit_before_merge
+                     ? _("The following untracked working tree files would be removed by %s:\n%%s"
+                         "Please move or remove them before you %s.")
+                     : _("The following untracked working tree files would be removed by %s:\n%%s");
+       msgs[ERROR_WOULD_LOSE_UNTRACKED_REMOVED] = xstrfmt(msg, cmd, cmd);
+
+       if (!strcmp(cmd, "checkout"))
+               msg = advice_commit_before_merge
+                     ? _("The following untracked working tree files would be overwritten by checkout:\n%%s"
+                         "Please move or remove them before you switch branches.")
+                     : _("The following untracked working tree files would be overwritten by checkout:\n%%s");
+       else if (!strcmp(cmd, "merge"))
+               msg = advice_commit_before_merge
+                     ? _("The following untracked working tree files would be overwritten by merge:\n%%s"
+                         "Please move or remove them before you merge.")
+                     : _("The following untracked working tree files would be overwritten by merge:\n%%s");
+       else
+               msg = advice_commit_before_merge
+                     ? _("The following untracked working tree files would be overwritten by %s:\n%%s"
+                         "Please move or remove them before you %s.")
+                     : _("The following untracked working tree files would be overwritten by %s:\n%%s");
+       msgs[ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN] = xstrfmt(msg, cmd, cmd);
 
        /*
         * Special case: ERROR_BIND_OVERLAP refers to a pair of paths, we
         * cannot easily display it as a list.
         */
-       msgs[ERROR_BIND_OVERLAP] = "Entry '%s' overlaps with '%s'.  Cannot bind.";
+       msgs[ERROR_BIND_OVERLAP] = _("Entry '%s' overlaps with '%s'.  Cannot bind.");
 
        msgs[ERROR_SPARSE_NOT_UPTODATE_FILE] =
-               "Cannot update sparse checkout: the following entries are not up-to-date:\n%s";
+               _("Cannot update sparse checkout: the following entries are not up-to-date:\n%s");
        msgs[ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN] =
-               "The following Working tree files would be overwritten by sparse checkout update:\n%s";
+               _("The following working tree files would be overwritten by sparse checkout update:\n%s");
        msgs[ERROR_WOULD_LOSE_ORPHANED_REMOVED] =
-               "The following Working tree files would be removed by sparse checkout update:\n%s";
+               _("The following working tree files would be removed by sparse checkout update:\n%s");
 
        opts->show_all_errors = 1;
        /* rejected paths may not have a static buffer */
@@ -138,7 +207,7 @@ static int add_rejected_path(struct unpack_trees_options *o,
                             const char *path)
 {
        if (!o->show_all_errors)
-               return error(ERRORMSG(o, e), path);
+               return error(ERRORMSG(o, e), super_prefixed(path));
 
        /*
         * Otherwise, insert in a list for future display by
@@ -162,13 +231,13 @@ static void display_error_msgs(struct unpack_trees_options *o)
                        something_displayed = 1;
                        for (i = 0; i < rejects->nr; i++)
                                strbuf_addf(&path, "\t%s\n", rejects->items[i].string);
-                       error(ERRORMSG(o, e), path.buf);
+                       error(ERRORMSG(o, e), super_prefixed(path.buf));
                        strbuf_release(&path);
                }
                string_list_clear(rejects, 0);
        }
        if (something_displayed)
-               fprintf(stderr, "Aborting\n");
+               fprintf(stderr, _("Aborting\n"));
 }
 
 /*
@@ -184,29 +253,42 @@ static void unlink_entry(const struct cache_entry *ce)
        schedule_dir_for_removal(ce->name, ce_namelen(ce));
 }
 
-static struct checkout state;
-static int check_updates(struct unpack_trees_options *o)
+static struct progress *get_progress(struct unpack_trees_options *o)
 {
        unsigned cnt = 0, total = 0;
+       struct index_state *index = &o->result;
+
+       if (!o->update || !o->verbose_update)
+               return NULL;
+
+       for (; cnt < index->cache_nr; cnt++) {
+               const struct cache_entry *ce = index->cache[cnt];
+               if (ce->ce_flags & (CE_UPDATE | CE_WT_REMOVE))
+                       total++;
+       }
+
+       return start_progress_delay(_("Checking out files"),
+                                   total, 50, 1);
+}
+
+static int check_updates(struct unpack_trees_options *o)
+{
+       unsigned cnt = 0;
+       int errs = 0;
        struct progress *progress = NULL;
        struct index_state *index = &o->result;
+       struct checkout state = CHECKOUT_INIT;
        int i;
-       int errs = 0;
 
-       if (o->update && o->verbose_update) {
-               for (total = cnt = 0; cnt < index->cache_nr; cnt++) {
-                       const struct cache_entry *ce = index->cache[cnt];
-                       if (ce->ce_flags & (CE_UPDATE | CE_WT_REMOVE))
-                               total++;
-               }
+       state.force = 1;
+       state.quiet = 1;
+       state.refresh_cache = 1;
+       state.istate = index;
 
-               progress = start_progress_delay(_("Checking out files"),
-                                               total, 50, 1);
-               cnt = 0;
-       }
+       progress = get_progress(o);
 
        if (o->update)
-               git_attr_set_direction(GIT_ATTR_CHECKOUT, &o->result);
+               git_attr_set_direction(GIT_ATTR_CHECKOUT, index);
        for (i = 0; i < index->cache_nr; i++) {
                const struct cache_entry *ce = index->cache[i];
 
@@ -214,10 +296,9 @@ static int check_updates(struct unpack_trees_options *o)
                        display_progress(progress, ++cnt);
                        if (o->update && !o->dry_run)
                                unlink_entry(ce);
-                       continue;
                }
        }
-       remove_marked_cache_entries(&o->result);
+       remove_marked_cache_entries(index);
        remove_scheduled_dirs();
 
        for (i = 0; i < index->cache_nr; i++) {
@@ -475,7 +556,7 @@ static int traverse_trees_recursive(int n, unsigned long dirmask,
        for (i = 0; i < n; i++, dirmask >>= 1) {
                const unsigned char *sha1 = NULL;
                if (dirmask & 1)
-                       sha1 = names[i].sha1;
+                       sha1 = names[i].oid->hash;
                buf[i] = fill_tree_descriptor(t+i, sha1);
        }
 
@@ -498,13 +579,14 @@ static int traverse_trees_recursive(int n, unsigned long dirmask,
  * itself - the caller needs to do the final check for the cache
  * entry having more data at the end!
  */
-static int do_compare_entry(const struct cache_entry *ce, const struct traverse_info *info, const struct name_entry *n)
+static int do_compare_entry_piecewise(const struct cache_entry *ce, const struct traverse_info *info, const struct name_entry *n)
 {
        int len, pathlen, ce_len;
        const char *ce_name;
 
        if (info->prev) {
-               int cmp = do_compare_entry(ce, info->prev, &info->name);
+               int cmp = do_compare_entry_piecewise(ce, info->prev,
+                                                    &info->name);
                if (cmp)
                        return cmp;
        }
@@ -522,6 +604,39 @@ static int do_compare_entry(const struct cache_entry *ce, const struct traverse_
        return df_name_compare(ce_name, ce_len, S_IFREG, n->path, len, n->mode);
 }
 
+static int do_compare_entry(const struct cache_entry *ce,
+                           const struct traverse_info *info,
+                           const struct name_entry *n)
+{
+       int len, pathlen, ce_len;
+       const char *ce_name;
+       int cmp;
+
+       /*
+        * If we have not precomputed the traverse path, it is quicker
+        * to avoid doing so.  But if we have precomputed it,
+        * it is quicker to use the precomputed version.
+        */
+       if (!info->traverse_path)
+               return do_compare_entry_piecewise(ce, info, n);
+
+       cmp = strncmp(ce->name, info->traverse_path, info->pathlen);
+       if (cmp)
+               return cmp;
+
+       pathlen = info->pathlen;
+       ce_len = ce_namelen(ce);
+
+       if (ce_len < pathlen)
+               return -1;
+
+       ce_len -= pathlen;
+       ce_name = ce->name + pathlen;
+
+       len = tree_entry_len(n);
+       return df_name_compare(ce_name, ce_len, S_IFREG, n->path, len, n->mode);
+}
+
 static int compare_entry(const struct cache_entry *ce, const struct traverse_info *info, const struct name_entry *n)
 {
        int cmp = do_compare_entry(ce, info, n);
@@ -557,7 +672,7 @@ static struct cache_entry *create_ce_entry(const struct traverse_info *info, con
        ce->ce_mode = create_ce_mode(n->mode);
        ce->ce_flags = create_ce_flags(stage);
        ce->ce_namelen = len;
-       hashcpy(ce->sha1, n->sha1);
+       oidcpy(&ce->oid, n->oid);
        make_traverse_path(ce->name, info, n);
 
        return ce;
@@ -661,8 +776,19 @@ static int find_cache_pos(struct traverse_info *info,
                                ++o->cache_bottom;
                        continue;
                }
-               if (!ce_in_traverse_path(ce, info))
+               if (!ce_in_traverse_path(ce, info)) {
+                       /*
+                        * Check if we can skip future cache checks
+                        * (because we're already past all possible
+                        * entries in the traverse path).
+                        */
+                       if (info->traverse_path) {
+                               if (strncmp(ce->name, info->traverse_path,
+                                           info->pathlen) > 0)
+                                       break;
+                       }
                        continue;
+               }
                ce_name = ce->name + pfxlen;
                ce_slash = strchr(ce_name, '/');
                if (ce_slash)
@@ -1018,12 +1144,6 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
 
        if (len > MAX_UNPACK_TREES)
                die("unpack_trees takes at most %d trees", MAX_UNPACK_TREES);
-       memset(&state, 0, sizeof(state));
-       state.base_dir = "";
-       state.force = 1;
-       state.quiet = 1;
-       state.refresh_cache = 1;
-       state.istate = &o->result;
 
        memset(&el, 0, sizeof(el));
        if (!core_apply_sparse_checkout || !o->update)
@@ -1208,7 +1328,7 @@ static int same(const struct cache_entry *a, const struct cache_entry *b)
        if ((a->ce_flags | b->ce_flags) & CE_CONFLICTED)
                return 0;
        return a->ce_mode == b->ce_mode &&
-              !hashcmp(a->sha1, b->sha1);
+              !oidcmp(&a->oid, &b->oid);
 }
 
 
@@ -1314,7 +1434,7 @@ static int verify_clean_subdirectory(const struct cache_entry *ce,
                /* If we are not going to update the submodule, then
                 * we don't care.
                 */
-               if (!hashcmp(sha1, ce->sha1))
+               if (!hashcmp(sha1, ce->oid.hash))
                        return 0;
                return verify_clean_submodule(ce, error_type, o);
        }
@@ -1454,8 +1574,7 @@ static int verify_absent_1(const struct cache_entry *ce,
 
                path = xmemdupz(ce->name, len);
                if (lstat(path, &st))
-                       ret = error("cannot stat '%s': %s", path,
-                                       strerror(errno));
+                       ret = error_errno("cannot stat '%s'", path);
                else
                        ret = check_ok_to_remove(path, len, DT_UNKNOWN, NULL,
                                                 &st, error_type, o);
@@ -1463,8 +1582,7 @@ static int verify_absent_1(const struct cache_entry *ce,
                return ret;
        } else if (lstat(ce->name, &st)) {
                if (errno != ENOENT)
-                       return error("cannot stat '%s': %s", ce->name,
-                                    strerror(errno));
+                       return error_errno("cannot stat '%s'", ce->name);
                return 0;
        } else {
                return check_ok_to_remove(ce->name, ce_namelen(ce),
@@ -1588,7 +1706,7 @@ static void show_stage_entry(FILE *o,
                fprintf(o, "%s%06o %s %d\t%s\n",
                        label,
                        ce->ce_mode,
-                       sha1_to_hex(ce->sha1),
+                       oid_to_hex(&ce->oid),
                        ce_stage(ce),
                        ce->name);
 }
@@ -1842,7 +1960,9 @@ int bind_merge(const struct cache_entry * const *src,
                             o->merge_size);
        if (a && old)
                return o->gently ? -1 :
-                       error(ERRORMSG(o, ERROR_BIND_OVERLAP), a->name, old->name);
+                       error(ERRORMSG(o, ERROR_BIND_OVERLAP),
+                             super_prefixed(a->name),
+                             super_prefixed(old->name));
        if (!a)
                return keep_entry(old, o);
        else