Andrew's git / gitweb.git /
6bbb0ca0174265626a228b143fe348f4eb186f0c
   1/*
   2 * GIT - The information manager from hell
   3 *
   4 * Copyright (C) Linus Torvalds, 2005
   5 */
   6#include "cache.h"
   7
   8int main(int argc, char **argv)
   9{
  10        unsigned char sha1[20];
  11        char type[20];
  12        void *buf;
  13        unsigned long size;
  14
  15        if (argc != 3 || get_sha1(argv[2], sha1))
  16                usage("cat-file [-t | tagname] <sha1>");
  17
  18        if (!strcmp("-t", argv[1])) {
  19                buf = read_sha1_file(sha1, type, &size);
  20                if (buf) {
  21                        buf = type;
  22                        size = strlen(type);
  23                        type[size] = '\n';
  24                }
  25        } else {
  26                buf = read_object_with_reference(sha1, argv[1], &size, NULL);
  27        }
  28
  29        if (!buf)
  30                die("cat-file %s: bad file", argv[2]);
  31
  32        while (size > 0) {
  33                long ret = write(1, buf, size);
  34                if (ret < 0) {
  35                        if (errno == EAGAIN)
  36                                continue;
  37                        /* Ignore epipe */
  38                        if (errno == EPIPE)
  39                                break;
  40                        die("cat-file: %s", strerror(errno));
  41                } else if (!ret) {
  42                        die("cat-file: disk full?");
  43                }
  44                size -= ret;
  45                buf += ret;
  46        }
  47        return 0;
  48}