Andrew's git - gitweb.git/blob - builtin-unpack-file.c

   1#include "cache.h"
   2#include "blob.h"
   3#include "exec_cmd.h"
   4
   5static char *create_temp_file(unsigned char *sha1)
   6{
   7        static char path[50];
   8        void *buf;
   9        enum object_type type;
  10        unsigned long size;
  11        int fd;
  12
  13        buf = read_sha1_file(sha1, &type, &size);
  14        if (!buf || type != OBJ_BLOB)
  15                die("unable to read blob object %s", sha1_to_hex(sha1));
  16
  17        strcpy(path, ".merge_file_XXXXXX");
  18        fd = xmkstemp(path);
  19        if (write_in_full(fd, buf, size) != size)
  20                die_errno("unable to write temp-file");
  21        close(fd);
  22        return path;
  23}
  24
  25int cmd_unpack_file(int argc, const char **argv, const char *prefix)
  26{
  27        unsigned char sha1[20];
  28
  29        if (argc != 2 || !strcmp(argv[1], "-h"))
  30                usage("git unpack-file <sha1>");
  31        if (get_sha1(argv[1], sha1))
  32                die("Not a valid object name %s", argv[1]);
  33
  34        git_config(git_default_config, NULL);
  35
  36        puts(create_temp_file(sha1));
  37        return 0;
  38}