directory-rename-detection.txt: technical docs on abilities and limitations

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index d90170f070f4f6ab7750c31fdcfac462c934b26d..665b5819499b4d56a4f49996125cac919e477309 100644 (file)
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -32,7 +32,7 @@ static int filter_object(const char *path, unsigned mode,
 {
        enum object_type type;
 
-       *buf = read_sha1_file(oid->hash, &type, size);
+       *buf = read_object_file(oid, &type, size);
        if (!*buf)
                return error(_("cannot read object %s '%s'"),
                             oid_to_hex(oid), path);
@@ -77,7 +77,7 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
        switch (opt) {
        case 't':
                oi.type_name = &sb;
-               if (sha1_object_info_extended(oid.hash, &oi, flags) < 0)
+               if (oid_object_info_extended(the_repository, &oid, &oi, flags) < 0)
                        die("git cat-file: could not get object info");
                if (sb.len) {
                        printf("%s\n", sb.buf);
@@ -88,7 +88,7 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
 
        case 's':
                oi.sizep = &size;
-               if (sha1_object_info_extended(oid.hash, &oi, flags) < 0)
+               if (oid_object_info_extended(the_repository, &oid, &oi, flags) < 0)
                        die("git cat-file: could not get object info");
                printf("%lu\n", size);
                return 0;
@@ -116,7 +116,7 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
                /* else fallthrough */
 
        case 'p':
-               type = sha1_object_info(oid.hash, NULL);
+               type = oid_object_info(the_repository, &oid, NULL);
                if (type < 0)
                        die("Not a valid object name %s", obj_name);
 
@@ -130,7 +130,7 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
 
                if (type == OBJ_BLOB)
                        return stream_blob_to_fd(1, &oid, NULL, 0);
-               buf = read_sha1_file(oid.hash, &type, &size);
+               buf = read_object_file(&oid, &type, &size);
                if (!buf)
                        die("Cannot read object %s", obj_name);
 
@@ -140,8 +140,9 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
        case 0:
                if (type_from_string(exp_type) == OBJ_BLOB) {
                        struct object_id blob_oid;
-                       if (sha1_object_info(oid.hash, NULL) == OBJ_TAG) {
-                               char *buffer = read_sha1_file(oid.hash, &type, &size);
+                       if (oid_object_info(the_repository, &oid, NULL) == OBJ_TAG) {
+                               char *buffer = read_object_file(&oid, &type,
+                                                               &size);
                                const char *target;
                                if (!skip_prefix(buffer, "object ", &target) ||
                                    get_oid_hex(target, &blob_oid))
@@ -150,7 +151,7 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
                        } else
                                oidcpy(&blob_oid, &oid);
 
-                       if (sha1_object_info(blob_oid.hash, NULL) == OBJ_BLOB)
+                       if (oid_object_info(the_repository, &blob_oid, NULL) == OBJ_BLOB)
                                return stream_blob_to_fd(1, &blob_oid, NULL, 0);
                        /*
                         * we attempted to dereference a tag to a blob
@@ -159,7 +160,7 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
                         * fall-back to the usual case.
                         */
                }
-               buf = read_object_with_reference(oid.hash, exp_type, &size, NULL);
+               buf = read_object_with_reference(&oid, exp_type, &size, NULL);
                break;
 
        default:
@@ -304,13 +305,14 @@ static void print_object_or_die(struct batch_options *opt, struct expand_data *d
                                enum object_type type;
                                if (!textconv_object(data->rest, 0100644, oid,
                                                     1, &contents, &size))
-                                       contents = read_sha1_file(oid->hash, &type,
-                                                                 &size);
+                                       contents = read_object_file(oid,
+                                                                   &type,
+                                                                   &size);
                                if (!contents)
                                        die("could not convert '%s' %s",
                                            oid_to_hex(oid), data->rest);
                        } else
-                               die("BUG: invalid cmdmode: %c", opt->cmdmode);
+                               BUG("invalid cmdmode: %c", opt->cmdmode);
                        batch_write(opt, contents, size);
                        free(contents);
                } else if (stream_blob_to_fd(1, oid, NULL, 0) < 0)
@@ -321,7 +323,7 @@ static void print_object_or_die(struct batch_options *opt, struct expand_data *d
                unsigned long size;
                void *contents;
 
-               contents = read_sha1_file(oid->hash, &type, &size);
+               contents = read_object_file(oid, &type, &size);
                if (!contents)
                        die("object %s disappeared", oid_to_hex(oid));
                if (type != data->type)
@@ -340,8 +342,8 @@ static void batch_object_write(const char *obj_name, struct batch_options *opt,
        struct strbuf buf = STRBUF_INIT;
 
        if (!data->skip_object_info &&
-           sha1_object_info_extended(data->oid.hash, &data->info,
-                                     OBJECT_INFO_LOOKUP_REPLACE) < 0) {
+           oid_object_info_extended(the_repository, &data->oid, &data->info,
+                                    OBJECT_INFO_LOOKUP_REPLACE) < 0) {
                printf("%s missing\n",
                       obj_name ? obj_name : oid_to_hex(&data->oid));
                fflush(stdout);
@@ -385,7 +387,7 @@ static void batch_one_object(const char *obj_name, struct batch_options *opt,
                               (uintmax_t)strlen(obj_name), obj_name);
                        break;
                default:
-                       die("BUG: unknown get_sha1_with_context result %d\n",
+                       BUG("unknown get_sha1_with_context result %d\n",
                               result);
                        break;
                }