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extend/barcode/class/BCGcodabar.barcode.php

@@ -0,0 +1,122 @@
+<?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();
+    }
+}
+?>