git.el: Display some information about the HEAD commit.

diff --git a/tag.c b/tag.c
index 864ac1bb602b1af07301d0b5f15d31e904b343a6..56a49f4fe1f705ee70bc5318a504c35d1bce963e 100644 (file)
--- a/tag.c
+++ b/tag.c
@@ -1,5 +1,8 @@
 #include "cache.h"
 #include "tag.h"
+#include "commit.h"
+#include "tree.h"
+#include "blob.h"
 
 const char *tag_type = "tag";
 
@@ -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];
 
@@ -47,7 +50,7 @@ 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((char *) data + 7, object))
+       if (memcmp("object ", data, 7) || get_sha1_hex((char *) data + 7, sha1))
                return -1;
 
        type_line = (char *) data + 48;
@@ -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));