2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
8 static int check_valid_sha1(unsigned char *sha1)
10 char *filename = sha1_file_name(sha1);
13 /* If we were anal, we'd check that the sha1 of the contents actually matches */
14 ret = access(filename, R_OK);
20 static int prepend_integer(char *buffer, unsigned val, int i)
24 buffer[--i] = '0' + (val % 10);
30 #define ORIG_OFFSET (40) /* Enough space to add the header of "tree <size>\0" */
32 int main(int argc, char **argv)
34 unsigned long size, offset, val;
35 int i, entries = read_cache();
39 fprintf(stderr, "No file-cache to create a tree of\n");
43 /* Guess at an initial size */
44 size = entries * 40 + 400;
45 buffer = malloc(size);
48 for (i = 0; i < entries; i++) {
49 struct cache_entry *ce = active_cache[i];
50 if (check_valid_sha1(ce->sha1) < 0)
52 if (offset + ce->namelen + 60 > size) {
53 size = alloc_nr(offset + ce->namelen + 60);
54 buffer = realloc(buffer, size);
56 offset += sprintf(buffer + offset, "%o %s", ce->st_mode, ce->name);
58 memcpy(buffer + offset, ce->sha1, 20);
62 i = prepend_integer(buffer, offset - ORIG_OFFSET, ORIG_OFFSET);
64 memcpy(buffer+i, "tree ", 5);
69 write_sha1_file(buffer, offset);