Use struct tree in tar-tree

It was using an open-coded tree parser; use a struct tree instead.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/tar-tree.c b/tar-tree.c
index f749d4b..6219754 100644 (file)
--- a/tar-tree.c
+++ b/tar-tree.c
@@ -3,6 +3,7 @@
  */
 #include <time.h>
 #include "cache.h"
+#include "tree.h"
 
 #define RECORDSIZE     (512)
 #define BLOCKSIZE      (RECORDSIZE * 20)
@@ -334,40 +335,37 @@ static void write_header(const unsigned char *sha1, char typeflag, const char *b
        write_if_needed();
 }
 
-static void traverse_tree(void *buffer, unsigned long size,
+static void traverse_tree(struct tree *tree,
                          struct path_prefix *prefix)
 {
        struct path_prefix this_prefix;
+       struct tree_entry_list *item;
        this_prefix.prev = prefix;
 
-       while (size) {
-               int namelen = strlen(buffer)+1;
+       parse_tree(tree);
+       item = tree->entries;
+
+       while (item) {
                void *eltbuf;
                char elttype[20];
                unsigned long eltsize;
-               unsigned char *sha1 = buffer + namelen;
-               char *path = strchr(buffer, ' ') + 1;
-               unsigned int mode;
-
-               if (size < namelen + 20 || sscanf(buffer, "%o", &mode) != 1)
-                       die("corrupt 'tree' file");
-               if (S_ISDIR(mode) || S_ISREG(mode))
-                       mode |= (mode & 0100) ? 0777 : 0666;
-               buffer = sha1 + 20;
-               size -= namelen + 20;
-
-               eltbuf = read_sha1_file(sha1, elttype, &eltsize);
+
+               eltbuf = read_sha1_file(item->item.any->sha1, 
+                                       elttype, &eltsize);
                if (!eltbuf)
-                       die("cannot read %s", sha1_to_hex(sha1));
-               write_header(sha1, TYPEFLAG_AUTO, basedir, prefix, path,
-                            mode, eltbuf, eltsize);
-               if (!strcmp(elttype, "tree")) {
-                       this_prefix.name = path;
-                       traverse_tree(eltbuf, eltsize, &this_prefix);
-               } else if (!strcmp(elttype, "blob") && !S_ISLNK(mode)) {
+                       die("cannot read %s", 
+                           sha1_to_hex(item->item.any->sha1));
+               write_header(item->item.any->sha1, TYPEFLAG_AUTO, basedir, 
+                            prefix, item->name,
+                            item->mode, eltbuf, eltsize);
+               if (item->directory) {
+                       this_prefix.name = item->name;
+                       traverse_tree(item->item.tree, &this_prefix);
+               } else if (!item->symlink) {
                        write_blocked(eltbuf, eltsize);
                }
                free(eltbuf);
+               item = item->next;
        }
 }
 
@@ -404,6 +402,7 @@ int main(int argc, char **argv)
        unsigned char commit_sha1[20];
        void *buffer;
        unsigned long size;
+       struct tree *tree;
 
        setup_git_directory();
 
@@ -425,8 +424,8 @@ int main(int argc, char **argv)
                archive_time = commit_time(buffer, size);
                free(buffer);
        }
-       buffer = read_object_with_reference(sha1, "tree", &size, NULL);
-       if (!buffer)
+       tree = parse_tree_indirect(sha1);
+       if (!tree)
                die("not a reference to a tag, commit or tree object: %s",
                    sha1_to_hex(sha1));
        if (!archive_time)
@@ -434,8 +433,7 @@ int main(int argc, char **argv)
        if (basedir)
                write_header((unsigned char *)"0", TYPEFLAG_DIR, NULL, NULL,
                        basedir, 040777, NULL, 0);
-       traverse_tree(buffer, size, NULL);
-       free(buffer);
+       traverse_tree(tree, NULL);
        write_trailer();
        return 0;
 }