Use simpler relative_path when set_git_dir

diff --git a/sha1_name.c b/sha1_name.c
index 95003c77ea9a0ee240d60bc7958bb48245b14ad4..3820f28ae757cce54a95014629ade4f7feb56efc 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -594,7 +594,7 @@ struct object *peel_to_type(const char *name, int namelen,
        while (1) {
                if (!o || (!o->parsed && !parse_object(o->sha1)))
                        return NULL;
-               if (o->type == expected_type)
+               if (expected_type == OBJ_ANY || o->type == expected_type)
                        return o;
                if (o->type == OBJ_TAG)
                        o = ((struct tag*) o)->tagged;
@@ -645,6 +645,8 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
                expected_type = OBJ_TREE;
        else if (!strncmp(blob_type, sp, 4) && sp[4] == '}')
                expected_type = OBJ_BLOB;
+       else if (!prefixcmp(sp, "object}"))
+               expected_type = OBJ_ANY;
        else if (sp[0] == '}')
                expected_type = OBJ_NONE;
        else if (sp[0] == '/')
@@ -654,6 +656,8 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
 
        if (expected_type == OBJ_COMMIT)
                lookup_flags = GET_SHA1_COMMITTISH;
+       else if (expected_type == OBJ_TREE)
+               lookup_flags = GET_SHA1_TREEISH;
 
        if (get_sha1_1(name, sp - name - 2, outer, lookup_flags))
                return -1;
@@ -856,8 +860,8 @@ static int get_sha1_oneline(const char *prefix, unsigned char *sha1,
 }
 
 struct grab_nth_branch_switch_cbdata {
-       long cnt, alloc;
-       struct strbuf *buf;
+       int remaining;
+       struct strbuf buf;
 };
 
 static int grab_nth_branch_switch(unsigned char *osha1, unsigned char *nsha1,
@@ -867,7 +871,6 @@ static int grab_nth_branch_switch(unsigned char *osha1, unsigned char *nsha1,
        struct grab_nth_branch_switch_cbdata *cb = cb_data;
        const char *match = NULL, *target = NULL;
        size_t len;
-       int nth;
 
        if (!prefixcmp(message, "checkout: moving from ")) {
                match = message + strlen("checkout: moving from ");
@@ -876,11 +879,12 @@ static int grab_nth_branch_switch(unsigned char *osha1, unsigned char *nsha1,
 
        if (!match || !target)
                return 0;
-
-       len = target - match;
-       nth = cb->cnt++ % cb->alloc;
-       strbuf_reset(&cb->buf[nth]);
-       strbuf_add(&cb->buf[nth], match, len);
+       if (--(cb->remaining) == 0) {
+               len = target - match;
+               strbuf_reset(&cb->buf);
+               strbuf_add(&cb->buf, match, len);
+               return 1; /* we are done */
+       }
        return 0;
 }
 
@@ -891,7 +895,7 @@ static int grab_nth_branch_switch(unsigned char *osha1, unsigned char *nsha1,
 static int interpret_nth_prior_checkout(const char *name, struct strbuf *buf)
 {
        long nth;
-       int i, retval;
+       int retval;
        struct grab_nth_branch_switch_cbdata cb;
        const char *brace;
        char *num_end;
@@ -901,34 +905,22 @@ static int interpret_nth_prior_checkout(const char *name, struct strbuf *buf)
        brace = strchr(name, '}');
        if (!brace)
                return -1;
-       nth = strtol(name+3, &num_end, 10);
+       nth = strtol(name + 3, &num_end, 10);
        if (num_end != brace)
                return -1;
        if (nth <= 0)
                return -1;
-       cb.alloc = nth;
-       cb.buf = xmalloc(nth * sizeof(struct strbuf));
-       for (i = 0; i < nth; i++)
-               strbuf_init(&cb.buf[i], 20);
-       cb.cnt = 0;
+       cb.remaining = nth;
+       strbuf_init(&cb.buf, 20);
+
        retval = 0;
-       for_each_recent_reflog_ent("HEAD", grab_nth_branch_switch, 40960, &cb);
-       if (cb.cnt < nth) {
-               cb.cnt = 0;
-               for_each_reflog_ent("HEAD", grab_nth_branch_switch, &cb);
+       if (0 < for_each_reflog_ent_reverse("HEAD", grab_nth_branch_switch, &cb)) {
+               strbuf_reset(buf);
+               strbuf_add(buf, cb.buf.buf, cb.buf.len);
+               retval = brace - name + 1;
        }
-       if (cb.cnt < nth)
-               goto release_return;
-       i = cb.cnt % nth;
-       strbuf_reset(buf);
-       strbuf_add(buf, cb.buf[i].buf, cb.buf[i].len);
-       retval = brace-name+1;
-
-release_return:
-       for (i = 0; i < nth; i++)
-               strbuf_release(&cb.buf[i]);
-       free(cb.buf);
 
+       strbuf_release(&cb.buf);
        return retval;
 }
 
@@ -1137,7 +1129,8 @@ int get_sha1_blob(const char *name, unsigned char *sha1)
 static void diagnose_invalid_sha1_path(const char *prefix,
                                       const char *filename,
                                       const unsigned char *tree_sha1,
-                                      const char *object_name)
+                                      const char *object_name,
+                                      int object_name_len)
 {
        struct stat st;
        unsigned char sha1[20];
@@ -1147,8 +1140,8 @@ static void diagnose_invalid_sha1_path(const char *prefix,
                prefix = "";
 
        if (!lstat(filename, &st))
-               die("Path '%s' exists on disk, but not in '%s'.",
-                   filename, object_name);
+               die("Path '%s' exists on disk, but not in '%.*s'.",
+                   filename, object_name_len, object_name);
        if (errno == ENOENT || errno == ENOTDIR) {
                char *fullname = xmalloc(strlen(filename)
                                             + strlen(prefix) + 1);
@@ -1158,16 +1151,16 @@ static void diagnose_invalid_sha1_path(const char *prefix,
                if (!get_tree_entry(tree_sha1, fullname,
                                    sha1, &mode)) {
                        die("Path '%s' exists, but not '%s'.\n"
-                           "Did you mean '%s:%s' aka '%s:./%s'?",
+                           "Did you mean '%.*s:%s' aka '%.*s:./%s'?",
                            fullname,
                            filename,
-                           object_name,
+                           object_name_len, object_name,
                            fullname,
-                           object_name,
+                           object_name_len, object_name,
                            filename);
                }
-               die("Path '%s' does not exist in '%s'",
-                   filename, object_name);
+               die("Path '%s' does not exist in '%.*s'",
+                   filename, object_name_len, object_name);
        }
 }
 
@@ -1332,13 +1325,8 @@ static int get_sha1_with_context_1(const char *name,
        }
        if (*cp == ':') {
                unsigned char tree_sha1[20];
-               char *object_name = NULL;
-               if (only_to_die) {
-                       object_name = xmalloc(cp-name+1);
-                       strncpy(object_name, name, cp-name);
-                       object_name[cp-name] = '\0';
-               }
-               if (!get_sha1_1(name, cp-name, tree_sha1, GET_SHA1_TREEISH)) {
+               int len = cp - name;
+               if (!get_sha1_1(name, len, tree_sha1, GET_SHA1_TREEISH)) {
                        const char *filename = cp+1;
                        char *new_filename = NULL;
 
@@ -1348,8 +1336,8 @@ static int get_sha1_with_context_1(const char *name,
                        ret = get_tree_entry(tree_sha1, filename, sha1, &oc->mode);
                        if (ret && only_to_die) {
                                diagnose_invalid_sha1_path(prefix, filename,
-                                                          tree_sha1, object_name);
-                               free(object_name);
+                                                          tree_sha1,
+                                                          name, len);
                        }
                        hashcpy(oc->tree, tree_sha1);
                        strncpy(oc->path, filename,
@@ -1360,7 +1348,7 @@ static int get_sha1_with_context_1(const char *name,
                        return ret;
                } else {
                        if (only_to_die)
-                               die("Invalid object name '%s'.", object_name);
+                               die("Invalid object name '%.*s'.", len, name);
                }
        }
        return ret;