blob.c

   1 #include "blob.h"
   2 #include "cache.h"
   3 #include <stdlib.h>
   4
   5 const char *blob_type = "blob";
   6
   7 struct blob *lookup_blob(unsigned char *sha1)
   8 {
   9         struct object *obj = lookup_object(sha1);
  10         if (!obj) {
  11                 struct blob *ret = malloc(sizeof(struct blob));
  12                 memset(ret, 0, sizeof(struct blob));
  13                 created_object(sha1, &ret->object);
  14                 ret->object.type = blob_type;
  15                 ret->object.parsed = 1;
  16                 return ret;
  17         }
  18         if (obj->parsed && obj->type != blob_type) {
  19                 error("Object %s is a %s, not a blob",
  20                       sha1_to_hex(sha1), obj->type);
  21                 return NULL;
  22         }
  23         return (struct blob *) obj;
  24 }