code128.inc in Barcode 7.2

Barcode plugin Code 128: Very dense code, used extensively worldwide

File

plugins/code128.inc

<?php

/**
 * @file
 * Barcode plugin
 * Code 128: Very dense code, used extensively worldwide
 */
function barcode_code128_barcode($barnumber, $settings) {
  $use_keys = "B";
  if (preg_match("/^[0-9" . chr(128) . chr(129) . chr(130) . "]+\$/", $barnumber)) {
    $use_keys = 'C';
    if (strlen($barnumber) % 2 != 0) {
      $barnumber = '0' . $barnumber;
    }
  }
  for ($i = 0; $i < 32; $i++) {
    $chr = chr($i);
  }
  if (preg_match("/[" . $chr . "]+/", $barnumber)) {
    $use_keys = 'A';
  }
  $bars = barcode_code128_encode($barnumber, $settings, $use_keys);
  if (empty($settings->filename_no_format)) {
    header("Content-type: image/" . $settings->format);
  }
  $scale = $settings->scale;
  if ($scale < 1) {
    $scale = 2;
  }
  $total_y = (double) $scale * $settings->height + 10 * $scale;
  $space = array(
    'top' => 2 * $scale,
    'bottom' => 2 * $scale,
    'left' => 2 * $scale,
    'right' => 2 * $scale,
  );

  /* count total width */
  $xpos = 0;
  $xpos = $scale * strlen($bars) + 2 * $scale * 10;

  /* allocate the image */
  $total_x = $xpos + $space['left'] + $space['right'];
  $xpos = $space['left'] + $scale * 10;
  $height = floor($total_y - $scale * 20);
  $height2 = floor($total_y - $space['bottom']);
  $im = @imagecreatetruecolor($total_x, $total_y);
  $bg_color = @imagecolorallocate($im, $settings->bgcolor[0], $settings->bgcolor[1], $settings->bgcolor[2]);
  @imagefilledrectangle($im, 0, 0, $total_x, $total_y, $bg_color);
  $bar_color = @imagecolorallocate($im, $settings->color[0], $settings->color[1], $settings->color[2]);
  for ($i = 0; $i < strlen($bars); $i++) {
    $h = $height;
    $val = strtoupper($bars[$i]);
    if ($val == 1) {
      @imagefilledrectangle($im, $xpos, $space['top'], $xpos + $scale - 1, $h, $bar_color);
    }
    $xpos += $scale;
  }
  $font_arr = @imagettfbbox($scale * 10, 0, $settings->font, $barnumber);
  $x = floor($total_x - (int) $font_arr[0] - (int) $font_arr[2] + $scale * 10) / 2;
  @imagettftext($im, $scale * 10, 0, $x, $height2, $bar_color, $settings->font, $barnumber);
  if ($settings->format == "png") {
    if (!empty($settings->filename_no_format)) {
      @imagepng($im, $settings->filename_no_format . "." . $settings->format);
    }
    else {
      @imagepng($im);
    }
  }
  if ($settings->format == "gif") {
    if (!empty($settings->filename_no_format)) {
      @imagegif($im, $settings->filename_no_format . "." . $settings->format);
    }
    else {
      @imagegif($im);
    }
  }
  if ($settings->format == "jpg" || $settings->format == "jpeg") {
    if (!empty($settings->filename_no_format)) {
      @imagejpeg($im, $settings->filename_no_format . "." . $settings->format);
    }
    else {
      @imagejpeg($im);
    }
  }
  @imagedestroy($im);
}
function barcode_code128_encode($barnumber, $settings, $use_keys) {
  $enc_table = array(
    "11011001100",
    "11001101100",
    "11001100110",
    "10010011000",
    "10010001100",
    "10001001100",
    "10011001000",
    "10011000100",
    "10001100100",
    "11001001000",
    "11001000100",
    "11000100100",
    "10110011100",
    "10011011100",
    "10011001110",
    "10111001100",
    "10011101100",
    "10011100110",
    "11001110010",
    "11001011100",
    "11001001110",
    "11011100100",
    "11001110100",
    "11101101110",
    "11101001100",
    "11100101100",
    "11100100110",
    "11101100100",
    "11100110100",
    "11100110010",
    "11011011000",
    "11011000110",
    "11000110110",
    "10100011000",
    "10001011000",
    "10001000110",
    "10110001000",
    "10001101000",
    "10001100010",
    "11010001000",
    "11000101000",
    "11000100010",
    "10110111000",
    "10110001110",
    "10001101110",
    "10111011000",
    "10111000110",
    "10001110110",
    "11101110110",
    "11010001110",
    "11000101110",
    "11011101000",
    "11011100010",
    "11011101110",
    "11101011000",
    "11101000110",
    "11100010110",
    "11101101000",
    "11101100010",
    "11100011010",
    "11101111010",
    "11001000010",
    "11110001010",
    "10100110000",
    "10100001100",
    "10010110000",
    "10010000110",
    "10000101100",
    "10000100110",
    "10110010000",
    "10110000100",
    "10011010000",
    "10011000010",
    "10000110100",
    "10000110010",
    "11000010010",
    "11001010000",
    "11110111010",
    "11000010100",
    "10001111010",
    "10100111100",
    "10010111100",
    "10010011110",
    "10111100100",
    "10011110100",
    "10011110010",
    "11110100100",
    "11110010100",
    "11110010010",
    "11011011110",
    "11011110110",
    "11110110110",
    "10101111000",
    "10100011110",
    "10001011110",
    "10111101000",
    "10111100010",
    "11110101000",
    "11110100010",
    "10111011110",
    "10111101110",
    "11101011110",
    "11110101110",
    "11010000100",
    "11010010000",
    "11010011100",
    "11000111010",
  );
  $start = array(
    "A" => "11010000100",
    "B" => "11010010000",
    "C" => "11010011100",
  );
  $stop = "11000111010";
  $sum = 0;
  $mfc_str = "";
  if ($use_keys == 'C') {
    for ($i = 0; $i < strlen($barnumber); $i += 2) {
      $val = substr($barnumber, $i, 2);
      if (is_int($val)) {
        $sum += ($i + 1) * (int) $val;
      }
      elseif ($barnumber == chr(129)) {
        $sum += ($i + 1) * 100;
      }
      elseif ($barnumber == chr(130)) {
        $sum += ($i + 1) * 101;
      }
      $mfc_str .= isset($enc_table[$val]) ? $enc_table[$val] : '';
    }
  }
  else {
    for ($i = 0; $i < strlen($barnumber); $i++) {
      $num = ord($barnumber[$i]);
      if ($num >= 32 && $num <= 126) {
        $num = ord($barnumber[$i]) - 32;
      }
      elseif ($num == 128) {
        $num = 99;
      }
      elseif ($num == 129) {
        $num = 100;
      }
      elseif ($num == 130) {
        $num = 101;
      }
      elseif ($num < 32 && $use_keys == 'A') {
        $num = $num + 64;
      }
      $sum += ($i + 1) * $num;
      $mfc_str .= isset($enc_table[$num]) ? $enc_table[$num] : '';
    }
  }
  if ($use_keys == 'A') {
    $check = ($sum + 103) % 103;
  }
  if ($use_keys == 'B') {
    $check = ($sum + 104) % 103;
  }
  if ($use_keys == 'C') {
    $check = ($sum + 105) % 103;
  }
  return $start[$use_keys] . $mfc_str . $enc_table[$check] . $stop . "11";
}

Functions

Name	Description
barcode_code128_barcode	@file Barcode plugin Code 128: Very dense code, used extensively worldwide
barcode_code128_encode