C++ (Cpp) mar_read Examples

Example #1

File: mar_extract.c Project: Dananji/Evergreen

static int mar_test_callback(MarFile *mar, const MarItem *item, void *unused) {
  FILE *fp;
  char buf[BLOCKSIZE];
  int fd, len, offset = 0;

  if (mar_ensure_parent_dir(item->name))
    return -1;

#ifdef XP_WIN
  fd = _open(item->name, _O_BINARY|_O_CREAT|_O_TRUNC|_O_WRONLY, item->flags);
#else
  fd = creat(item->name, item->flags);
#endif
  if (fd == -1)
    return -1;

  fp = fdopen(fd, "wb");
  if (!fp)
    return -1;

  while ((len = mar_read(mar, item, offset, buf, sizeof(buf))) > 0) {
    if (fwrite(buf, len, 1, fp) != 1)
      break;
    offset += len;
  }

  fclose(fp);
  return len == 0 ? 0 : -1;
}

Example #2

File: archivereader.cpp Project: AtulKumar2/gecko-dev

int
ArchiveReader::ExtractItemToStream(const MarItem *item, FILE *fp)
{
  /* decompress the data chunk by chunk */

  bz_stream strm;
  int offset, inlen, outlen, ret = OK;

  memset(&strm, 0, sizeof(strm));
  if (BZ2_bzDecompressInit(&strm, 0, 0) != BZ_OK)
    return UNEXPECTED_BZIP_ERROR;

  offset = 0;
  for (;;) {
    if (!item->length) {
      ret = UNEXPECTED_MAR_ERROR;
      break;
    }

    if (offset < (int) item->length && strm.avail_in == 0) {
      inlen = mar_read(mArchive, item, offset, inbuf, inbuf_size);
      if (inlen <= 0)
        return READ_ERROR;
      offset += inlen;
      strm.next_in = inbuf;
      strm.avail_in = inlen;
    }

    strm.next_out = outbuf;
    strm.avail_out = outbuf_size;

    ret = BZ2_bzDecompress(&strm);
    if (ret != BZ_OK && ret != BZ_STREAM_END) {
      ret = UNEXPECTED_BZIP_ERROR;
      break;
    }

    outlen = outbuf_size - strm.avail_out;
    if (outlen) {
      if (fwrite(outbuf, outlen, 1, fp) != 1) {
        ret = WRITE_ERROR_EXTRACT;
        break;
      }
    }

    if (ret == BZ_STREAM_END) {
      ret = OK;
      break;
    }
  }

  BZ2_bzDecompressEnd(&strm);
  return ret;
}