static int stage = 0;
-static int read_one_entry(unsigned char *sha1, const char *base, int baselen, const char *pathname, unsigned mode)
-{
- int len = strlen(pathname);
- unsigned int size = cache_entry_size(baselen + len);
- struct cache_entry *ce = malloc(size);
-
- memset(ce, 0, size);
-
- ce->ce_mode = create_ce_mode(mode);
- ce->ce_flags = create_ce_flags(baselen + len, stage);
- memcpy(ce->name, base, baselen);
- memcpy(ce->name + baselen, pathname, len+1);
- memcpy(ce->sha1, sha1, 20);
- return add_cache_entry(ce, 1);
-}
-
-static int read_tree_recursive(void *buffer, const char *type,
- unsigned long size,
- const char *base, int baselen)
-{
- if (!buffer || strcmp(type, "tree"))
- return -1;
- while (size) {
- int len = strlen(buffer)+1;
- unsigned char *sha1 = buffer + len;
- char *path = strchr(buffer, ' ')+1;
- unsigned int mode;
-
- if (size < len + 20 || sscanf(buffer, "%o", &mode) != 1)
- return -1;
-
- buffer = sha1 + 20;
- size -= len + 20;
-
- if (S_ISDIR(mode)) {
- int retval;
- int pathlen = strlen(path);
- char *newbase = malloc(baselen + 1 + pathlen);
- void *eltbuf;
- char elttype[20];
- unsigned long eltsize;
-
- eltbuf = read_sha1_file(sha1, elttype, &eltsize);
- if (!eltbuf)
- return -1;
- memcpy(newbase, base, baselen);
- memcpy(newbase + baselen, path, pathlen);
- newbase[baselen + pathlen] = '/';
- retval = read_tree_recursive(eltbuf, elttype, eltsize,
- newbase,
- baselen + pathlen + 1);
- free(eltbuf);
- free(newbase);
- if (retval)
- return -1;
- continue;
- }
- if (read_one_entry(sha1, base, baselen, path, mode) < 0)
- return -1;
- }
- return 0;
-}
-
-static int read_tree(unsigned char *sha1, const char *base, int baselen)
+static int unpack_tree(unsigned char *sha1)
{
void *buffer;
unsigned long size;
+ int ret;
- buffer = read_tree_with_tree_or_commit_sha1(sha1, &size, 0);
- return read_tree_recursive(buffer, "tree", size, base, baselen);
+ buffer = read_object_with_reference(sha1, "tree", &size, NULL);
+ if (!buffer)
+ return -1;
+ ret = read_tree(buffer, size, stage);
+ free(buffer);
+ return ret;
}
-static int remove_lock = 0;
+static char *lockfile_name;
static void remove_lock_file(void)
{
- if (remove_lock)
- unlink(".git/index.lock");
+ if (lockfile_name)
+ unlink(lockfile_name);
}
static int path_matches(struct cache_entry *a, struct cache_entry *b)
}
}
-static char *read_tree_usage = "read-tree (<sha> | -m <sha1> [<sha2> <sha3>])";
+static char *read_tree_usage = "git-read-tree (<sha> | -m <sha1> [<sha2> <sha3>])";
int main(int argc, char **argv)
{
int i, newfd, merge;
unsigned char sha1[20];
+ static char lockfile[MAXPATHLEN+1];
+ const char *indexfile = get_index_file();
+
+ snprintf(lockfile, sizeof(lockfile), "%s.lock", indexfile);
- newfd = open(".git/index.lock", O_RDWR | O_CREAT | O_EXCL, 0600);
+ newfd = open(lockfile, O_RDWR | O_CREAT | O_EXCL, 0600);
if (newfd < 0)
die("unable to create new cachefile");
atexit(remove_lock_file);
- remove_lock = 1;
+ lockfile_name = lockfile;
merge = 0;
for (i = 1; i < argc; i++) {
merge = 1;
continue;
}
- if (get_sha1_hex(arg, sha1) < 0)
+ if (get_sha1(arg, sha1) < 0)
usage(read_tree_usage);
if (stage > 3)
usage(read_tree_usage);
- if (read_tree(sha1, "", 0) < 0)
+ if (unpack_tree(sha1) < 0)
die("failed to unpack tree object %s", arg);
stage++;
}
die("just how do you expect me to merge %d trees?", stage-1);
}
}
- if (write_cache(newfd, active_cache, active_nr) ||
- rename(".git/index.lock", ".git/index"))
+ if (write_cache(newfd, active_cache, active_nr) || rename(lockfile, indexfile))
die("unable to write new index file");
- remove_lock = 0;
+ lockfile_name = NULL;
return 0;
}