void update_tree_entry(struct tree_desc *desc)
{
- void *buf = desc->buf;
+ const void *buf = desc->buf;
unsigned long size = desc->size;
int len = strlen(buf) + 1 + 20;
if (size < len)
die("corrupt tree file");
- desc->buf = buf + len;
+ desc->buf = (char *) buf + len;
desc->size = size - len;
}
+static const char *get_mode(const char *str, unsigned int *modep)
+{
+ unsigned char c;
+ unsigned int mode = 0;
+
+ while ((c = *str++) != ' ') {
+ if (c < '0' || c > '7')
+ return NULL;
+ mode = (mode << 3) + (c - '0');
+ }
+ *modep = mode;
+ return str;
+}
+
const unsigned char *tree_entry_extract(struct tree_desc *desc, const char **pathp, unsigned int *modep)
{
- void *tree = desc->buf;
+ const void *tree = desc->buf;
unsigned long size = desc->size;
int len = strlen(tree)+1;
- const unsigned char *sha1 = tree + len;
- const char *path = strchr(tree, ' ');
+ const unsigned char *sha1 = (unsigned char *) tree + len;
+ const char *path;
unsigned int mode;
- if (!path || size < len + 20 || sscanf(tree, "%o", &mode) != 1)
+ path = get_mode(tree, &mode);
+ if (!path || size < len + 20)
die("corrupt tree file");
- *pathp = path+1;
+ *pathp = path;
*modep = canon_mode(mode);
return sha1;
}
+int tree_entry(struct tree_desc *desc, struct name_entry *entry)
+{
+ const void *tree = desc->buf;
+ const char *path;
+ unsigned long len, size = desc->size;
+
+ if (!size)
+ return 0;
+
+ path = get_mode(tree, &entry->mode);
+ if (!path)
+ die("corrupt tree file");
+
+ entry->path = path;
+ len = strlen(path);
+ entry->pathlen = len;
+
+ path += len + 1;
+ entry->sha1 = (const unsigned char *) path;
+
+ path += 20;
+ len = path - (char *) tree;
+ if (len > size)
+ die("corrupt tree file");
+
+ desc->buf = path;
+ desc->size = size - len;
+ return 1;
+}
+
void traverse_trees(int n, struct tree_desc *t, const char *base, traverse_callback_t callback)
{
struct name_entry *entry = xmalloc(n*sizeof(*entry));