ls-tree: chomp leading directories when run from a subdirectory

diff --git a/write-tree.c b/write-tree.c
index e3c0a02310a01775741bae0d937333930f14cd3f..f866059f24bacd314fa4a979334a9893dbfc19ba 100644 (file)
--- a/write-tree.c
+++ b/write-tree.c
@@ -5,16 +5,17 @@
  */
 #include "cache.h"
 
+static int missing_ok = 0;
+
 static int check_valid_sha1(unsigned char *sha1)
 {
-       char *filename = sha1_file_name(sha1);
        int ret;
 
        /* If we were anal, we'd check that the sha1 of the contents actually matches */
-       ret = access(filename, R_OK);
-       if (ret)
-               perror(filename);
-       return ret;
+       ret = has_sha1_file(sha1);
+       if (ret == 0)
+               perror(sha1_file_name(sha1));
+       return ret ? 0 : -1;
 }
 
 static int write_tree(struct cache_entry **cachep, int maxentries, const char *base, int baselen, unsigned char *returnsha1)
@@ -62,7 +63,7 @@ static int write_tree(struct cache_entry **cachep, int maxentries, const char *b
                        sha1 = subdir_sha1;
                }
 
-               if (check_valid_sha1(sha1) < 0)
+               if (!missing_ok && check_valid_sha1(sha1) < 0)
                        exit(1);
 
                entrylen = pathlen - baselen;
@@ -82,14 +83,29 @@ static int write_tree(struct cache_entry **cachep, int maxentries, const char *b
        return nr;
 }
 
+static const char write_tree_usage[] = "git-write-tree [--missing-ok]";
+
 int main(int argc, char **argv)
 {
        int i, funny;
-       int entries = read_cache();
+       int entries;
        unsigned char sha1[20];
+       
+       setup_git_directory();
+
+       entries = read_cache();
+       if (argc == 2) {
+               if (!strcmp(argv[1], "--missing-ok"))
+                       missing_ok = 1;
+               else
+                       die(write_tree_usage);
+       }
+       
+       if (argc > 2)
+               die("too many options");
 
        if (entries < 0)
-               die("write-tree: error reading cache");
+               die("git-write-tree: error reading cache");
 
        /* Verify that the tree is merged */
        funny = 0;
@@ -104,7 +120,7 @@ int main(int argc, char **argv)
                }
        }
        if (funny)
-               die("write-tree: not able to write tree");
+               die("git-write-tree: not able to write tree");
 
        /* Also verify that the cache does not have path and path/file
         * at the same time.  At this point we know the cache has only
@@ -131,11 +147,11 @@ int main(int argc, char **argv)
                }
        }
        if (funny)
-               die("write-tree: not able to write tree");
+               die("git-write-tree: not able to write tree");
 
        /* Ok, write it out */
        if (write_tree(active_cache, entries, "", 0, sha1) != entries)
-               die("write-tree: internal error");
+               die("git-write-tree: internal error");
        printf("%s\n", sha1_to_hex(sha1));
        return 0;
 }