extern int ZEXPORT zipWriteInFileInZip()

in zlib/contrib/minizip/zip.c [1599:1698]

• 82 lines of code
• 22 McCabe index (conditional complexity)

extern int ZEXPORT zipWriteInFileInZip(zipFile file, const void* buf, unsigned int len) {
    zip64_internal* zi;
    int err=ZIP_OK;

    if (file == NULL)
        return ZIP_PARAMERROR;
    zi = (zip64_internal*)file;

    if (zi->in_opened_file_inzip == 0)
        return ZIP_PARAMERROR;

    zi->ci.crc32 = crc32(zi->ci.crc32,buf,(uInt)len);

#ifdef HAVE_BZIP2
    if(zi->ci.method == Z_BZIP2ED && (!zi->ci.raw))
    {
      zi->ci.bstream.next_in = (void*)buf;
      zi->ci.bstream.avail_in = len;
      err = BZ_RUN_OK;

      while ((err==BZ_RUN_OK) && (zi->ci.bstream.avail_in>0))
      {
        if (zi->ci.bstream.avail_out == 0)
        {
          if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
            err = ZIP_ERRNO;
          zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE;
          zi->ci.bstream.next_out = (char*)zi->ci.buffered_data;
        }


        if(err != BZ_RUN_OK)
          break;

        if ((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
        {
          uLong uTotalOutBefore_lo = zi->ci.bstream.total_out_lo32;
//          uLong uTotalOutBefore_hi = zi->ci.bstream.total_out_hi32;
          err=BZ2_bzCompress(&zi->ci.bstream,  BZ_RUN);

          zi->ci.pos_in_buffered_data += (uInt)(zi->ci.bstream.total_out_lo32 - uTotalOutBefore_lo) ;
        }
      }

      if(err == BZ_RUN_OK)
        err = ZIP_OK;
    }
    else
#endif
    {
      zi->ci.stream.next_in = (Bytef*)(uintptr_t)buf;
      zi->ci.stream.avail_in = len;

      while ((err==ZIP_OK) && (zi->ci.stream.avail_in>0))
      {
          if (zi->ci.stream.avail_out == 0)
          {
              if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
                  err = ZIP_ERRNO;
              zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
              zi->ci.stream.next_out = zi->ci.buffered_data;
          }


          if(err != ZIP_OK)
              break;

          if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
          {
              uLong uTotalOutBefore = zi->ci.stream.total_out;
              err=deflate(&zi->ci.stream,  Z_NO_FLUSH);

              zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
          }
          else
          {
              uInt copy_this,i;
              if (zi->ci.stream.avail_in < zi->ci.stream.avail_out)
                  copy_this = zi->ci.stream.avail_in;
              else
                  copy_this = zi->ci.stream.avail_out;

              for (i = 0; i < copy_this; i++)
                  *(((char*)zi->ci.stream.next_out)+i) =
                      *(((const char*)zi->ci.stream.next_in)+i);
              {
                  zi->ci.stream.avail_in -= copy_this;
                  zi->ci.stream.avail_out-= copy_this;
                  zi->ci.stream.next_in+= copy_this;
                  zi->ci.stream.next_out+= copy_this;
                  zi->ci.stream.total_in+= copy_this;
                  zi->ci.stream.total_out+= copy_this;
                  zi->ci.pos_in_buffered_data += copy_this;
              }
          }
      }// while(...)
    }

    return err;
}