Merge part of 'sp/checkout'

diff --git a/tar-tree.c b/tar-tree.c
index d36baed5211ac059093130b8f6f786af8f2c70dd..e478e13e283a9d9687d0b32e180558995f2b920d 100644 (file)
--- a/tar-tree.c
+++ b/tar-tree.c
@@ -3,7 +3,7 @@
  */
 #include <time.h>
 #include "cache.h"
-#include "tree.h"
+#include "diff.h"
 #include "commit.h"
 
 #define RECORDSIZE     (512)
@@ -304,9 +304,11 @@ static void write_header(const unsigned char *sha1, char typeflag, const char *b
        }
 
        if (S_ISDIR(mode))
-               mode |= 0755;   /* GIT doesn't store permissions of dirs */
-       if (S_ISLNK(mode))
-               mode |= 0777;   /* ... nor of symlinks */
+               mode |= 0777;
+       else if (S_ISREG(mode))
+               mode |= (mode & 0100) ? 0777 : 0666;
+       else if (S_ISLNK(mode))
+               mode |= 0777;
        sprintf(&header[100], "%07o", mode & 07777);
 
        /* XXX: should we provide more meaningful info here? */
@@ -336,37 +338,38 @@ static void write_header(const unsigned char *sha1, char typeflag, const char *b
        write_if_needed();
 }
 
-static void traverse_tree(struct tree *tree,
+static void traverse_tree(struct tree_desc *tree,
                          struct path_prefix *prefix)
 {
        struct path_prefix this_prefix;
-       struct tree_entry_list *item;
        this_prefix.prev = prefix;
 
-       parse_tree(tree);
-       item = tree->entries;
-
-       while (item) {
+       while (tree->size) {
+               const char *name;
+               const unsigned char *sha1;
+               unsigned mode;
                void *eltbuf;
                char elttype[20];
                unsigned long eltsize;
 
-               eltbuf = read_sha1_file(item->item.any->sha1, 
-                                       elttype, &eltsize);
+               sha1 = tree_entry_extract(tree, &name, &mode);
+               update_tree_entry(tree);
+
+               eltbuf = read_sha1_file(sha1, elttype, &eltsize);
                if (!eltbuf)
-                       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) {
+                       die("cannot read %s", sha1_to_hex(sha1));
+               write_header(sha1, TYPEFLAG_AUTO, basedir, 
+                            prefix, name, mode, eltbuf, eltsize);
+               if (S_ISDIR(mode)) {
+                       struct tree_desc subtree;
+                       subtree.buf = eltbuf;
+                       subtree.size = eltsize;
+                       this_prefix.name = name;
+                       traverse_tree(&subtree, &this_prefix);
+               } else if (!S_ISLNK(mode)) {
                        write_blocked(eltbuf, eltsize);
                }
                free(eltbuf);
-               item = item->next;
        }
 }
 
@@ -374,7 +377,7 @@ int main(int argc, char **argv)
 {
        unsigned char sha1[20];
        struct commit *commit;
-       struct tree *tree;
+       struct tree_desc tree;
 
        setup_git_directory();
 
@@ -390,13 +393,13 @@ int main(int argc, char **argv)
                usage(tar_tree_usage);
        }
 
-       commit = lookup_commit_reference(sha1);
+       commit = lookup_commit_reference_gently(sha1, 1);
        if (commit) {
                write_global_extended_header(commit->object.sha1);
                archive_time = commit->date;
        }
-       tree = parse_tree_indirect(sha1);
-       if (!tree)
+       tree.buf = read_object_with_reference(sha1, "tree", &tree.size, NULL);
+       if (!tree.buf)
                die("not a reference to a tag, commit or tree object: %s",
                    sha1_to_hex(sha1));
        if (!archive_time)
@@ -404,7 +407,7 @@ int main(int argc, char **argv)
        if (basedir)
                write_header((unsigned char *)"0", TYPEFLAG_DIR, NULL, NULL,
                        basedir, 040777, NULL, 0);
-       traverse_tree(tree, NULL);
+       traverse_tree(&tree, NULL);
        write_trailer();
        return 0;
 }