2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
8 static int missing_ok = 0;
10 static int check_valid_sha1(unsigned char *sha1)
14 /* If we were anal, we'd check that the sha1 of the contents actually matches */
15 ret = has_sha1_file(sha1);
17 perror(sha1_file_name(sha1));
21 static int write_tree(struct cache_entry **cachep, int maxentries, const char *base, int baselen, unsigned char *returnsha1)
23 unsigned char subdir_sha1[20];
24 unsigned long size, offset;
28 /* Guess at some random initial size */
30 buffer = xmalloc(size);
34 while (nr < maxentries) {
35 struct cache_entry *ce = cachep[nr];
36 const char *pathname = ce->name, *filename, *dirname;
37 int pathlen = ce_namelen(ce), entrylen;
41 /* Did we hit the end of the directory? Return how many we wrote */
42 if (baselen >= pathlen || memcmp(base, pathname, baselen))
46 mode = ntohl(ce->ce_mode);
48 /* Do we have _further_ subdirectories? */
49 filename = pathname + baselen;
50 dirname = strchr(filename, '/');
54 subdir_written = write_tree(cachep + nr, maxentries - nr, pathname, dirname-pathname+1, subdir_sha1);
57 /* Now we need to write out the directory entry into this tree.. */
59 pathlen = dirname - pathname;
61 /* ..but the directory entry doesn't count towards the total count */
66 if (!missing_ok && check_valid_sha1(sha1) < 0)
69 entrylen = pathlen - baselen;
70 if (offset + entrylen + 100 > size) {
71 size = alloc_nr(offset + entrylen + 100);
72 buffer = xrealloc(buffer, size);
74 offset += sprintf(buffer + offset, "%o %.*s", mode, entrylen, filename);
76 memcpy(buffer + offset, sha1, 20);
81 write_sha1_file(buffer, offset, "tree", returnsha1);
86 int main(int argc, char **argv)
89 int entries = read_cache();
90 unsigned char sha1[20];
93 if (!strcmp(argv[1], "--missing-ok"))
96 die("unknown option %s", argv[1]);
100 die("too many options");
103 die("git-write-tree: error reading cache");
105 /* Verify that the tree is merged */
107 for (i = 0; i < entries; i++) {
108 struct cache_entry *ce = active_cache[i];
109 if (ntohs(ce->ce_flags) & ~CE_NAMEMASK) {
111 fprintf(stderr, "...\n");
114 fprintf(stderr, "%s: unmerged (%s)\n", ce->name, sha1_to_hex(ce->sha1));
118 die("git-write-tree: not able to write tree");
120 /* Also verify that the cache does not have path and path/file
121 * at the same time. At this point we know the cache has only
125 for (i = 0; i < entries - 1; i++) {
126 /* path/file always comes after path because of the way
127 * the cache is sorted. Also path can appear only once,
128 * which means conflicting one would immediately follow.
130 const char *this_name = active_cache[i]->name;
131 const char *next_name = active_cache[i+1]->name;
132 int this_len = strlen(this_name);
133 if (this_len < strlen(next_name) &&
134 strncmp(this_name, next_name, this_len) == 0 &&
135 next_name[this_len] == '/') {
137 fprintf(stderr, "...\n");
140 fprintf(stderr, "You have both %s and %s\n",
141 this_name, next_name);
145 die("git-write-tree: not able to write tree");
147 /* Ok, write it out */
148 if (write_tree(active_cache, entries, "", 0, sha1) != entries)
149 die("git-write-tree: internal error");
150 printf("%s\n", sha1_to_hex(sha1));