Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "blob.h"
   3
   4const char *blob_type = "blob";
   5
   6struct blob *lookup_blob(const unsigned char *sha1)
   7{
   8        struct object *obj = lookup_object(sha1);
   9        if (!obj) {
  10                struct blob *ret = alloc_blob_node();
  11                created_object(sha1, &ret->object);
  12                ret->object.type = OBJ_BLOB;
  13                return ret;
  14        }
  15        if (!obj->type)
  16                obj->type = OBJ_BLOB;
  17        if (obj->type != OBJ_BLOB) {
  18                error("Object %s is a %s, not a blob",
  19                      sha1_to_hex(sha1), typename(obj->type));
  20                return NULL;
  21        }
  22        return (struct blob *) obj;
  23}
  24
  25int parse_blob_buffer(struct blob *item, void *buffer, unsigned long size)
  26{
  27        item->object.parsed = 1;
  28        return 0;
  29}
  30
  31int parse_blob(struct blob *item)
  32{
  33        char type[20];
  34        void *buffer;
  35        unsigned long size;
  36        int ret;
  37
  38        if (item->object.parsed)
  39                return 0;
  40        buffer = read_sha1_file(item->object.sha1, type, &size);
  41        if (!buffer)
  42                return error("Could not read %s",
  43                             sha1_to_hex(item->object.sha1));
  44        if (strcmp(type, blob_type))
  45                return error("Object %s not a blob",
  46                             sha1_to_hex(item->object.sha1));
  47        ret = parse_blob_buffer(item, buffer, size);
  48        free(buffer);
  49        return ret;
  50}