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<?php /** *-------------------------------------------------------------------- * * Sub-Class - Codabar * *-------------------------------------------------------------------- * Copyright (C) Jean-Sebastien Goupil * http://www.barcodephp.com */ include_once('BCGParseException.php'); include_once('BCGBarcode1D.php'); class BCGcodabar extends BCGBarcode1D { /** * Constructor. */ public function __construct() { parent::__construct(); $this->keys = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-', '$', ':', '/', '.', '+', 'A', 'B', 'C', 'D'); $this->code = array( // 0 added to add an extra space '00000110', /* 0 */ '00001100', /* 1 */ '00010010', /* 2 */ '11000000', /* 3 */ '00100100', /* 4 */ '10000100', /* 5 */ '01000010', /* 6 */ '01001000', /* 7 */ '01100000', /* 8 */ '10010000', /* 9 */ '00011000', /* - */ '00110000', /* $ */ '10001010', /* : */ '10100010', /* / */ '10101000', /* . */ '00111110', /* + */ '00110100', /* A */ '01010010', /* B */ '00010110', /* C */ '00011100' /* D */ ); } /** * Parses the text before displaying it. * * @param mixed $text */ public function parse($text) { parent::parse(strtoupper($text)); // Only Capital Letters are Allowed } /** * Draws the barcode. * * @param resource $im */ public function draw($im) { $c = strlen($this->text); for ($i = 0; $i < $c; $i++) { $this->drawChar($im, $this->findCode($this->text[$i]), true); } $this->drawText($im, 0, 0, $this->positionX, $this->thickness); } /** * Returns the maximal size of a barcode. * * @param int $w * @param int $h * @return int[] */ public function getDimension($w, $h) { $textLength = 0; $c = strlen($this->text); for ($i = 0; $i < $c; $i++) { $index = $this->findIndex($this->text[$i]); if ($index !== false) { $textLength += 8; $textLength += substr_count($this->code[$index], '1'); } } $w += $textLength; $h += $this->thickness; return parent::getDimension($w, $h); } /** * Validates the input. */ protected function validate() { $c = strlen($this->text); if ($c === 0) { throw new BCGParseException('codabar', 'No data has been entered.'); } // Checking if all chars are allowed for ($i = 0; $i < $c; $i++) { if (array_search($this->text[$i], $this->keys) === false) { throw new BCGParseException('codabar', 'The character \'' . $this->text[$i] . '\' is not allowed.'); } } // Must start by A, B, C or D if ($c == 0 || ($this->text[0] !== 'A' && $this->text[0] !== 'B' && $this->text[0] !== 'C' && $this->text[0] !== 'D')) { throw new BCGParseException('codabar', 'The text must start by the character A, B, C, or D.'); } // Must end by A, B, C or D $c2 = $c - 1; if ($c2 === 0 || ($this->text[$c2] !== 'A' && $this->text[$c2] !== 'B' && $this->text[$c2] !== 'C' && $this->text[$c2] !== 'D')) { throw new BCGParseException('codabar', 'The text must end by the character A, B, C, or D.'); } parent::validate(); } } ?>