PclZip::privExtractFileUsingTempFile

Advertisement

Syntax Syntax

PclZip::privExtractFileUsingTempFile( $p_entry,  $p_options )

Source Source

File: wp-admin/includes/class-pclzip.php

  function privExtractFileUsingTempFile(&$p_entry, &$p_options)
  {
    $v_result=1;

    // ----- Creates a temporary file
    $v_gzip_temp_name = PCLZIP_TEMPORARY_DIR.uniqid('pclzip-').'.gz';
    if (($v_dest_file = @fopen($v_gzip_temp_name, "wb")) == 0) {
      fclose($v_file);
      PclZip::privErrorLog(PCLZIP_ERR_WRITE_OPEN_FAIL, 'Unable to open temporary file \''.$v_gzip_temp_name.'\' in binary write mode');
      return PclZip::errorCode();
    }


    // ----- Write gz file format header
    $v_binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($p_entry['compression']), Chr(0x00), time(), Chr(0x00), Chr(3));
    @fwrite($v_dest_file, $v_binary_data, 10);

    // ----- Read the file by PCLZIP_READ_BLOCK_SIZE octets blocks
    $v_size = $p_entry['compressed_size'];
    while ($v_size != 0)
    {
      $v_read_size = ($v_size < PCLZIP_READ_BLOCK_SIZE ? $v_size : PCLZIP_READ_BLOCK_SIZE);
      $v_buffer = @fread($this->zip_fd, $v_read_size);
      //$v_binary_data = pack('a'.$v_read_size, $v_buffer);
      @fwrite($v_dest_file, $v_buffer, $v_read_size);
      $v_size -= $v_read_size;
    }

    // ----- Write gz file format footer
    $v_binary_data = pack('VV', $p_entry['crc'], $p_entry['size']);
    @fwrite($v_dest_file, $v_binary_data, 8);

    // ----- Close the temporary file
    @fclose($v_dest_file);

    // ----- Opening destination file
    if (($v_dest_file = @fopen($p_entry['filename'], 'wb')) == 0) {
      $p_entry['status'] = "write_error";
      return $v_result;
    }

    // ----- Open the temporary gz file
    if (($v_src_file = @gzopen($v_gzip_temp_name, 'rb')) == 0) {
      @fclose($v_dest_file);
      $p_entry['status'] = "read_error";
      PclZip::privErrorLog(PCLZIP_ERR_READ_OPEN_FAIL, 'Unable to open temporary file \''.$v_gzip_temp_name.'\' in binary read mode');
      return PclZip::errorCode();
    }


    // ----- Read the file by PCLZIP_READ_BLOCK_SIZE octets blocks
    $v_size = $p_entry['size'];
    while ($v_size != 0) {
      $v_read_size = ($v_size < PCLZIP_READ_BLOCK_SIZE ? $v_size : PCLZIP_READ_BLOCK_SIZE);
      $v_buffer = @gzread($v_src_file, $v_read_size);
      //$v_binary_data = pack('a'.$v_read_size, $v_buffer);
      @fwrite($v_dest_file, $v_buffer, $v_read_size);
      $v_size -= $v_read_size;
    }
    @fclose($v_dest_file);
    @gzclose($v_src_file);

    // ----- Delete the temporary file
    @unlink($v_gzip_temp_name);

    // ----- Return
    return $v_result;
  }

Advertisement

Advertisement

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.