Teach "git-read-tree -u" to check out submodules as a directory

diff --git a/tag.c b/tag.c
index 91913332709eb67252a776ddd1995e183a1a5bf5..56a49f4fe1f705ee70bc5318a504c35d1bce963e 100644 (file)
--- a/tag.c
+++ b/tag.c
@@ -1,11 +1,14 @@
 #include "cache.h"
 #include "tag.h"
+#include "commit.h"
+#include "tree.h"
+#include "blob.h"
 
 const char *tag_type = "tag";
 
 struct object *deref_tag(struct object *o, const char *warn, int warnlen)
 {
-       while (o && o->type == TYPE_TAG)
+       while (o && o->type == OBJ_TAG)
                o = parse_object(((struct tag *)o)->tagged->sha1);
        if (!o && warn) {
                if (!warnlen)
@@ -19,14 +22,14 @@ struct tag *lookup_tag(const unsigned char *sha1)
 {
         struct object *obj = lookup_object(sha1);
         if (!obj) {
-                struct tag *ret = xcalloc(1, sizeof(struct tag));
+                struct tag *ret = alloc_tag_node();
                 created_object(sha1, &ret->object);
-                ret->object.type = TYPE_TAG;
+                ret->object.type = OBJ_TAG;
                 return ret;
         }
        if (!obj->type)
-               obj->type = TYPE_TAG;
-        if (obj->type != TYPE_TAG) {
+               obj->type = OBJ_TAG;
+        if (obj->type != OBJ_TAG) {
                 error("Object %s is a %s, not a tree",
                       sha1_to_hex(sha1), typename(obj->type));
                 return NULL;
@@ -37,7 +40,7 @@ struct tag *lookup_tag(const unsigned char *sha1)
 int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
 {
        int typelen, taglen;
-       unsigned char object[20];
+       unsigned char sha1[20];
        const char *type_line, *tag_line, *sig_line;
        char type[20];
 
@@ -47,10 +50,10 @@ int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
 
        if (size < 64)
                return -1;
-       if (memcmp("object ", data, 7) || get_sha1_hex(data + 7, object))
+       if (memcmp("object ", data, 7) || get_sha1_hex((char *) data + 7, sha1))
                return -1;
 
-       type_line = data + 48;
+       type_line = (char *) data + 48;
        if (memcmp("\ntype ", type_line-1, 6))
                return -1;
 
@@ -73,7 +76,19 @@ int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
        memcpy(item->tag, tag_line + 4, taglen);
        item->tag[taglen] = '\0';
 
-       item->tagged = lookup_object_type(object, type);
+       if (!strcmp(type, blob_type)) {
+               item->tagged = &lookup_blob(sha1)->object;
+       } else if (!strcmp(type, tree_type)) {
+               item->tagged = &lookup_tree(sha1)->object;
+       } else if (!strcmp(type, commit_type)) {
+               item->tagged = &lookup_commit(sha1)->object;
+       } else if (!strcmp(type, tag_type)) {
+               item->tagged = &lookup_tag(sha1)->object;
+       } else {
+               error("Unknown type %s", type);
+               item->tagged = NULL;
+       }
+
        if (item->tagged && track_object_refs) {
                struct object_refs *refs = alloc_object_refs(1);
                refs->ref[0] = item->tagged;
@@ -85,18 +100,18 @@ int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
 
 int parse_tag(struct tag *item)
 {
-       char type[20];
+       enum object_type type;
        void *data;
        unsigned long size;
        int ret;
 
        if (item->object.parsed)
                return 0;
-       data = read_sha1_file(item->object.sha1, type, &size);
+       data = read_sha1_file(item->object.sha1, &type, &size);
        if (!data)
                return error("Could not read %s",
                             sha1_to_hex(item->object.sha1));
-       if (strcmp(type, tag_type)) {
+       if (type != OBJ_TAG) {
                free(data);
                return error("Object %s not a tag",
                             sha1_to_hex(item->object.sha1));