diff options
Diffstat (limited to 'tree.c')
| -rw-r--r-- | tree.c | 65 |
1 files changed, 65 insertions, 0 deletions
@@ -5,6 +5,71 @@ const char *tree_type = "tree"; +static int read_one_entry(unsigned char *sha1, const char *base, int baselen, const char *pathname, unsigned mode, int stage) +{ + 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, unsigned long size, + const char *base, int baselen, int stage) +{ + 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 || strcmp(elttype, "tree")) + return -1; + memcpy(newbase, base, baselen); + memcpy(newbase + baselen, path, pathlen); + newbase[baselen + pathlen] = '/'; + retval = read_tree_recursive(eltbuf, eltsize, + newbase, + baselen + pathlen + 1, stage); + free(eltbuf); + free(newbase); + if (retval) + return -1; + continue; + } + if (read_one_entry(sha1, base, baselen, path, mode, stage) < 0) + return -1; + } + return 0; +} + +int read_tree(void *buffer, unsigned long size, int stage) +{ + return read_tree_recursive(buffer, size, "", 0, stage); +} + struct tree *lookup_tree(unsigned char *sha1) { struct object *obj = lookup_object(sha1); |