Current File : /home/k/a/r/karenpetzb/www/items/category/Cmap.tar
ByteEncoding/Static.php000060400000003475150715303500011062 0ustar00<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @package    Zend_Pdf
 * @subpackage Fonts
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */

/** Zend_Pdf_Cmap_ByteEncoding */
require_once 'Zend/Pdf/Cmap/ByteEncoding.php';


/**
 * Custom cmap type used for the Adobe Standard 14 PDF fonts.
 *
 * Just like {@link Zend_Pdf_Cmap_ByteEncoding} except that the constructor
 * takes a predefined array of glyph numbers and can cover any Unicode character.
 *
 * @package    Zend_Pdf
 * @subpackage Fonts
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Pdf_Cmap_ByteEncoding_Static extends Zend_Pdf_Cmap_ByteEncoding
{
  /**** Public Interface ****/


  /* Object Lifecycle */

    /**
     * Object constructor
     *
     * @param array $cmapData Array whose keys are Unicode character codes and
     *   values are glyph numbers.
     * @throws Zend_Pdf_Exception
     */
    public function __construct($cmapData)
    {
        if (! is_array($cmapData)) {
            throw new Zend_Pdf_Exception('Constructor parameter must be an array',
                                         Zend_Pdf_Exception::BAD_PARAMETER_TYPE);
        }
        $this->_glyphIndexArray = $cmapData;
    }

}
ByteEncoding.php000060400000054110150715303500007623 0ustar00<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @package    Zend_Pdf
 * @subpackage Fonts
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */

/** Zend_Pdf_Cmap */
require_once 'Zend/Pdf/Cmap.php';


/**
 * Implements the "byte encoding" character map (type 0).
 *
 * This is the (legacy) Apple standard encoding mechanism and provides coverage
 * for characters in the Mac Roman character set only. Consequently, this cmap
 * type should be used only as a last resort.
 *
 * The mapping from Mac Roman to Unicode can be found at
 * {@link http://www.unicode.org/Public/MAPPINGS/VENDORS/APPLE/ROMAN.TXT}.
 *
 * @package    Zend_Pdf
 * @subpackage Fonts
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Pdf_Cmap_ByteEncoding extends Zend_Pdf_Cmap
{
  /**** Instance Variables ****/


    /**
     * Glyph index array. Stores the actual glyph numbers. The array keys are
     * the translated Unicode code points.
     * @var array
     */
    protected $_glyphIndexArray = array();



  /**** Public Interface ****/


  /* Concrete Class Implementation */

    /**
     * Returns an array of glyph numbers corresponding to the Unicode characters.
     *
     * If a particular character doesn't exist in this font, the special 'missing
     * character glyph' will be substituted.
     *
     * See also {@link glyphNumberForCharacter()}.
     *
     * @param array $characterCodes Array of Unicode character codes (code points).
     * @return array Array of glyph numbers.
     */
    public function glyphNumbersForCharacters($characterCodes)
    {
        $glyphNumbers = array();
        foreach ($characterCodes as $key => $characterCode) {

           if (! isset($this->_glyphIndexArray[$characterCode])) {
                $glyphNumbers[$key] = Zend_Pdf_Cmap::MISSING_CHARACTER_GLYPH;
                continue;
            }

            $glyphNumbers[$key] = $this->_glyphIndexArray[$characterCode];

        }
        return $glyphNumbers;
    }

    /**
     * Returns the glyph number corresponding to the Unicode character.
     *
     * If a particular character doesn't exist in this font, the special 'missing
     * character glyph' will be substituted.
     *
     * See also {@link glyphNumbersForCharacters()} which is optimized for bulk
     * operations.
     *
     * @param integer $characterCode Unicode character code (code point).
     * @return integer Glyph number.
     */
    public function glyphNumberForCharacter($characterCode)
    {
        if (! isset($this->_glyphIndexArray[$characterCode])) {
            return Zend_Pdf_Cmap::MISSING_CHARACTER_GLYPH;
        }
        return $this->_glyphIndexArray[$characterCode];
    }

    /**
     * Returns an array containing the Unicode characters that have entries in
     * this character map.
     *
     * @return array Unicode character codes.
     */
    public function getCoveredCharacters()
    {
        return array_keys($this->_glyphIndexArray);
    }

    /**
     * Returns an array containing the glyphs numbers that have entries in this character map.
     * Keys are Unicode character codes (integers)
     * 
     * This functionality is partially covered by glyphNumbersForCharacters(getCoveredCharacters())
     * call, but this method do it in more effective way (prepare complete list instead of searching 
     * glyph for each character code).
     *
     * @internal
     * @return array Array representing <Unicode character code> => <glyph number> pairs.
     */
    public function getCoveredCharactersGlyphs()
    {
        return $this->_glyphIndexArray;
    }


  /* Object Lifecycle */

    /**
     * Object constructor
     *
     * Parses the raw binary table data. Throws an exception if the table is
     * malformed.
     *
     * @param string $cmapData Raw binary cmap table data.
     * @throws Zend_Pdf_Exception
     */
    public function __construct($cmapData)
    {
        /* Sanity check: This table must be exactly 262 bytes long.
         */
        $actualLength = strlen($cmapData);
        if ($actualLength != 262) {
            throw new Zend_Pdf_Exception('Insufficient table data',
                                         Zend_Pdf_Exception::CMAP_TABLE_DATA_TOO_SMALL);
        }

        /* Sanity check: Make sure this is right data for this table type.
         */
        $type = $this->_extractUInt2($cmapData, 0);
        if ($type != Zend_Pdf_Cmap::TYPE_BYTE_ENCODING) {
            throw new Zend_Pdf_Exception('Wrong cmap table type',
                                         Zend_Pdf_Exception::CMAP_WRONG_TABLE_TYPE);
        }

        $length = $this->_extractUInt2($cmapData, 2);
        if ($length != $actualLength) {
            throw new Zend_Pdf_Exception("Table length ($length) does not match actual length ($actualLength)",
                                         Zend_Pdf_Exception::CMAP_WRONG_TABLE_LENGTH);
        }

        /* Mapping tables should be language-independent. The font may not work
         * as expected if they are not. Unfortunately, many font files in the
         * wild incorrectly record a language ID in this field, so we can't
         * call this a failure.
         */
        $language = $this->_extractUInt2($cmapData, 4);
        if ($language != 0) {
            // Record a warning here somehow?
        }

        /* The mapping between the Mac Roman and Unicode characters is static.
         * For simplicity, just put all 256 glyph indices into one array keyed
         * off the corresponding Unicode character.
         */
        $i = 6;
        $this->_glyphIndexArray[0x00]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x01]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x02]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x03]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x04]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x05]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x06]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x07]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x08]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x09]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x0a]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x0b]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x0c]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x0d]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x0e]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x0f]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x10]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x11]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x12]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x13]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x14]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x15]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x16]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x17]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x18]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x19]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x1a]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x1b]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x1c]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x1d]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x1e]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x1f]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x20]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x21]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x22]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x23]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x24]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x25]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x26]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x27]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x28]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x29]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2a]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2b]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2c]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2d]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2e]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2f]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x30]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x31]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x32]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x33]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x34]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x35]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x36]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x37]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x38]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x39]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x3a]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x3b]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x3c]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x3d]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x3e]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x3f]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x40]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x41]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x42]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x43]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x44]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x45]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x46]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x47]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x48]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x49]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x4a]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x4b]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x4c]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x4d]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x4e]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x4f]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x50]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x51]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x52]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x53]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x54]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x55]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x56]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x57]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x58]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x59]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x5a]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x5b]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x5c]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x5d]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x5e]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x5f]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x60]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x61]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x62]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x63]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x64]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x65]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x66]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x67]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x68]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x69]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x6a]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x6b]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x6c]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x6d]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x6e]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x6f]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x70]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x71]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x72]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x73]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x74]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x75]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x76]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x77]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x78]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x79]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x7a]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x7b]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x7c]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x7d]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x7e]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x7f]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xc4]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xc5]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xc7]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xc9]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xd1]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xd6]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xdc]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xe1]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xe0]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xe2]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xe4]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xe3]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xe5]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xe7]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xe9]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xe8]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xea]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xeb]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xed]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xec]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xee]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xef]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xf1]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xf3]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xf2]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xf4]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xf6]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xf5]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xfa]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xf9]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xfb]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xfc]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2020] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xb0]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xa2]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xa3]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xa7]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2022] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xb6]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xdf]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xae]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xa9]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2122] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xb4]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xa8]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2260] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xc6]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xd8]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x221e] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xb1]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2264] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2265] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xa5]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xb5]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2202] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2211] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x220f] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x03c0] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x222b] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xaa]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xba]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x03a9] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xe6]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xf8]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xbf]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xa1]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xac]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x221a] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x0192] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2248] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2206] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xab]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xbb]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2026] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xa0]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xc0]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xc3]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xd5]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x0152] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x0153] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2013] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2014] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x201c] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x201d] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2018] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2019] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xf7]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x25ca] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xff]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x0178] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2044] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x20ac] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2039] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x203a] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xfb01] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xfb02] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2021] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xb7]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x201a] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x201e] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x2030] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xc2]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xca]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xc1]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xcb]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xc8]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xcd]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xce]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xcf]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xcc]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xd3]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xd4]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xf8ff] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xd2]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xda]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xdb]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xd9]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x0131] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x02c6] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x02dc] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xaf]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x02d8] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x02d9] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x02da] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0xb8]   = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x02dd] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x02db] = ord($cmapData[$i++]);
        $this->_glyphIndexArray[0x02c7] = ord($cmapData[$i]);
    }

}
TrimmedTable.php000060400000016554150715303500007634 0ustar00<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @package    Zend_Pdf
 * @subpackage Fonts
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */

/** Zend_Pdf_Cmap */
require_once 'Zend/Pdf/Cmap.php';


/**
 * Implements the "trimmed table mapping" character map (type 6).
 *
 * This table type is preferred over the {@link Zend_Pdf_Cmap_SegmentToDelta}
 * table when the Unicode characters covered by the font fall into a single
 * contiguous range.
 *
 * @package    Zend_Pdf
 * @subpackage Fonts
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Pdf_Cmap_TrimmedTable extends Zend_Pdf_Cmap
{
  /**** Instance Variables ****/


    /**
     * The starting character code covered by this table.
     * @var integer
     */
    protected $_startCode = 0;

    /**
     * The ending character code covered by this table.
     * @var integer
     */
    protected $_endCode = 0;

    /**
     * Glyph index array. Stores the actual glyph numbers.
     * @var array
     */
    protected $_glyphIndexArray = array();



  /**** Public Interface ****/


  /* Concrete Class Implementation */

    /**
     * Returns an array of glyph numbers corresponding to the Unicode characters.
     *
     * If a particular character doesn't exist in this font, the special 'missing
     * character glyph' will be substituted.
     *
     * See also {@link glyphNumberForCharacter()}.
     *
     * @param array $characterCodes Array of Unicode character codes (code points).
     * @return array Array of glyph numbers.
     */
    public function glyphNumbersForCharacters($characterCodes)
    {
        $glyphNumbers = array();
        foreach ($characterCodes as $key => $characterCode) {

            if (($characterCode < $this->_startCode) || ($characterCode > $this->_endCode)) {
                $glyphNumbers[$key] = Zend_Pdf_Cmap::MISSING_CHARACTER_GLYPH;
                continue;
            }

            $glyphIndex = $characterCode - $this->_startCode;
            $glyphNumbers[$key] = $this->_glyphIndexArray[$glyphIndex];

        }
        return $glyphNumbers;
    }

    /**
     * Returns the glyph number corresponding to the Unicode character.
     *
     * If a particular character doesn't exist in this font, the special 'missing
     * character glyph' will be substituted.
     *
     * See also {@link glyphNumbersForCharacters()} which is optimized for bulk
     * operations.
     *
     * @param integer $characterCode Unicode character code (code point).
     * @return integer Glyph number.
     */
    public function glyphNumberForCharacter($characterCode)
    {
        if (($characterCode < $this->_startCode) || ($characterCode > $this->_endCode)) {
            return Zend_Pdf_Cmap::MISSING_CHARACTER_GLYPH;
        }
        $glyphIndex = $characterCode - $this->_startCode;
        return $this->_glyphIndexArray[$glyphIndex];
    }

    /**
     * Returns an array containing the Unicode characters that have entries in
     * this character map.
     *
     * @return array Unicode character codes.
     */
    public function getCoveredCharacters()
    {
        $characterCodes = array();
        for ($code = $this->_startCode; $code <= $this->_endCode; $code++) {
            $characterCodes[] = $code;
        }
        return $characterCodes;
    }


    /**
     * Returns an array containing the glyphs numbers that have entries in this character map.
     * Keys are Unicode character codes (integers)
     * 
     * This functionality is partially covered by glyphNumbersForCharacters(getCoveredCharacters())
     * call, but this method do it in more effective way (prepare complete list instead of searching 
     * glyph for each character code).
     *
     * @internal
     * @return array Array representing <Unicode character code> => <glyph number> pairs.
     */
    public function getCoveredCharactersGlyphs()
    {
        $glyphNumbers = array();
        for ($code = $this->_startCode; $code <= $this->_endCode; $code++) {
            $glyphNumbers[$code] = $this->_glyphIndexArray[$code - $this->_startCode];
        }

        return $glyphNumbers;
    }


  /* Object Lifecycle */

    /**
     * Object constructor
     *
     * Parses the raw binary table data. Throws an exception if the table is
     * malformed.
     *
     * @param string $cmapData Raw binary cmap table data.
     * @throws Zend_Pdf_Exception
     */
    public function __construct($cmapData)
    {
        /* Sanity check: The table should be at least 9 bytes in size.
         */
        $actualLength = strlen($cmapData);
        if ($actualLength < 9) {
            throw new Zend_Pdf_Exception('Insufficient table data',
                                         Zend_Pdf_Exception::CMAP_TABLE_DATA_TOO_SMALL);
        }

        /* Sanity check: Make sure this is right data for this table type.
         */
        $type = $this->_extractUInt2($cmapData, 0);
        if ($type != Zend_Pdf_Cmap::TYPE_TRIMMED_TABLE) {
            throw new Zend_Pdf_Exception('Wrong cmap table type',
                                         Zend_Pdf_Exception::CMAP_WRONG_TABLE_TYPE);
        }

        $length = $this->_extractUInt2($cmapData, 2);
        if ($length != $actualLength) {
            throw new Zend_Pdf_Exception("Table length ($length) does not match actual length ($actualLength)",
                                         Zend_Pdf_Exception::CMAP_WRONG_TABLE_LENGTH);
        }

        /* Mapping tables should be language-independent. The font may not work
         * as expected if they are not. Unfortunately, many font files in the
         * wild incorrectly record a language ID in this field, so we can't
         * call this a failure.
         */
        $language = $this->_extractUInt2($cmapData, 4);
        if ($language != 0) {
            // Record a warning here somehow?
        }

        $this->_startCode = $this->_extractUInt2($cmapData, 6);

        $entryCount = $this->_extractUInt2($cmapData, 8);
        $expectedCount = ($length - 10) >> 1;
        if ($entryCount != $expectedCount) {
            throw new Zend_Pdf_Exception("Entry count is wrong; expected: $expectedCount; actual: $entryCount",
                                         Zend_Pdf_Exception::CMAP_WRONG_ENTRY_COUNT);
        }

        $this->_endCode = $this->_startCode + $entryCount - 1;

        $offset = 10;
        for ($i = 0; $i < $entryCount; $i++, $offset += 2) {
            $this->_glyphIndexArray[] = $this->_extractUInt2($cmapData, $offset);
        }

        /* Sanity check: After reading all of the data, we should be at the end
         * of the table.
         */
        if ($offset != $length) {
            throw new Zend_Pdf_Exception("Ending offset ($offset) does not match length ($length)",
                                         Zend_Pdf_Exception::CMAP_FINAL_OFFSET_NOT_LENGTH);
        }
    }

}
SegmentToDelta.php000060400000035053150715303500010135 0ustar00<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @package    Zend_Pdf
 * @subpackage Fonts
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */

/** Zend_Pdf_Cmap */
require_once 'Zend/Pdf/Cmap.php';


/**
 * Implements the "segment mapping to delta values" character map (type 4).
 *
 * This is the Microsoft standard mapping table type for OpenType fonts. It
 * provides the ability to cover multiple contiguous ranges of the Unicode
 * character set, with the exception of Unicode Surrogates (U+D800 - U+DFFF).
 *
 * @package    Zend_Pdf
 * @subpackage Fonts
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Pdf_Cmap_SegmentToDelta extends Zend_Pdf_Cmap
{
  /**** Instance Variables ****/


    /**
     * The number of segments in the table.
     * @var integer
     */
    protected $_segmentCount = 0;

    /**
     * The size of the binary search range for segments.
     * @var integer
     */
    protected $_searchRange = 0;

    /**
     * The number of binary search steps required to cover the entire search
     * range.
     * @var integer
     */
    protected $_searchIterations = 0;

    /**
     * Array of ending character codes for each segment.
     * @var array
     */
    protected $_segmentTableEndCodes = array();

    /**
     * The ending character code for the segment at the end of the low search
     * range.
     * @var integer
     */
    protected $_searchRangeEndCode = 0;

    /**
     * Array of starting character codes for each segment.
     * @var array
     */
    protected $_segmentTableStartCodes = array();

    /**
     * Array of character code to glyph delta values for each segment.
     * @var array
     */
    protected $_segmentTableIdDeltas = array();

    /**
     * Array of offsets into the glyph index array for each segment.
     * @var array
     */
    protected $_segmentTableIdRangeOffsets = array();

    /**
     * Glyph index array. Stores glyph numbers, used with range offset.
     * @var array
     */
    protected $_glyphIndexArray = array();



  /**** Public Interface ****/


  /* Concrete Class Implementation */

    /**
     * Returns an array of glyph numbers corresponding to the Unicode characters.
     *
     * If a particular character doesn't exist in this font, the special 'missing
     * character glyph' will be substituted.
     *
     * See also {@link glyphNumberForCharacter()}.
     *
     * @param array $characterCodes Array of Unicode character codes (code points).
     * @return array Array of glyph numbers.
     */
    public function glyphNumbersForCharacters($characterCodes)
    {
        $glyphNumbers = array();
        foreach ($characterCodes as $key => $characterCode) {

            /* These tables only cover the 16-bit character range.
             */
            if ($characterCode > 0xffff) {
                $glyphNumbers[$key] = Zend_Pdf_Cmap::MISSING_CHARACTER_GLYPH;
                continue;
            }

            /* Determine where to start the binary search. The segments are
             * ordered from lowest-to-highest. We are looking for the first
             * segment whose end code is greater than or equal to our character
             * code.
             *
             * If the end code at the top of the search range is larger, then
             * our target is probably below it.
             *
             * If it is smaller, our target is probably above it, so move the
             * search range to the end of the segment list.
             */
            if ($this->_searchRangeEndCode >= $characterCode) {
                $searchIndex = $this->_searchRange;
            } else {
                $searchIndex = $this->_segmentCount;
            }

            /* Now do a binary search to find the first segment whose end code
             * is greater or equal to our character code. No matter the number
             * of segments (there may be hundreds in a large font), we will only
             * need to perform $this->_searchIterations.
             */
            for ($i = 1; $i <= $this->_searchIterations; $i++) {
                if ($this->_segmentTableEndCodes[$searchIndex] >= $characterCode) {
                    $subtableIndex = $searchIndex;
                    $searchIndex -= $this->_searchRange >> $i;
                } else {
                    $searchIndex += $this->_searchRange >> $i;
                }
            }

            /* If the segment's start code is greater than our character code,
             * that character is not represented in this font. Move on.
             */
            if ($this->_segmentTableStartCodes[$subtableIndex] > $characterCode) {
                $glyphNumbers[$key] = Zend_Pdf_Cmap::MISSING_CHARACTER_GLYPH;
                continue;
            }

            if ($this->_segmentTableIdRangeOffsets[$subtableIndex] == 0) {
                /* This segment uses a simple mapping from character code to
                 * glyph number.
                 */
                $glyphNumbers[$key] = ($characterCode + $this->_segmentTableIdDeltas[$subtableIndex]) % 65536;

            } else {
                /* This segment relies on the glyph index array to determine the
                 * glyph number. The calculation below determines the correct
                 * index into that array. It's a little odd because the range
                 * offset in the font file is designed to quickly provide an
                 * address of the index in the raw binary data instead of the
                 * index itself. Since we've parsed the data into arrays, we
                 * must process it a bit differently.
                 */
                $glyphIndex = ($characterCode - $this->_segmentTableStartCodes[$subtableIndex] +
                               $this->_segmentTableIdRangeOffsets[$subtableIndex] - $this->_segmentCount +
                               $subtableIndex - 1);
                $glyphNumbers[$key] = $this->_glyphIndexArray[$glyphIndex];

            }

        }
        return $glyphNumbers;
    }

    /**
     * Returns the glyph number corresponding to the Unicode character.
     *
     * If a particular character doesn't exist in this font, the special 'missing
     * character glyph' will be substituted.
     *
     * See also {@link glyphNumbersForCharacters()} which is optimized for bulk
     * operations.
     *
     * @param integer $characterCode Unicode character code (code point).
     * @return integer Glyph number.
     */
    public function glyphNumberForCharacter($characterCode)
    {
        /* This code is pretty much a copy of glyphNumbersForCharacters().
         * See that method for inline documentation.
         */

        if ($characterCode > 0xffff) {
            return Zend_Pdf_Cmap::MISSING_CHARACTER_GLYPH;
        }

        if ($this->_searchRangeEndCode >= $characterCode) {
            $searchIndex = $this->_searchRange;
        } else {
            $searchIndex = $this->_segmentCount;
        }

        for ($i = 1; $i <= $this->_searchIterations; $i++) {
            if ($this->_segmentTableEndCodes[$searchIndex] >= $characterCode) {
                $subtableIndex = $searchIndex;
                $searchIndex -= $this->_searchRange >> $i;
            } else {
                $searchIndex += $this->_searchRange >> $i;
            }
        }

        if ($this->_segmentTableStartCodes[$subtableIndex] > $characterCode) {
            return Zend_Pdf_Cmap::MISSING_CHARACTER_GLYPH;
        }

        if ($this->_segmentTableIdRangeOffsets[$subtableIndex] == 0) {
            $glyphNumber = ($characterCode + $this->_segmentTableIdDeltas[$subtableIndex]) % 65536;
        } else {
            $glyphIndex = ($characterCode - $this->_segmentTableStartCodes[$subtableIndex] +
                           $this->_segmentTableIdRangeOffsets[$subtableIndex] - $this->_segmentCount +
                           $subtableIndex - 1);
            $glyphNumber = $this->_glyphIndexArray[$glyphIndex];
        }
        return $glyphNumber;
    }

    /**
     * Returns an array containing the Unicode characters that have entries in
     * this character map.
     *
     * @return array Unicode character codes.
     */
    public function getCoveredCharacters()
    {
        $characterCodes = array();
        for ($i = 1; $i <= $this->_segmentCount; $i++) {
            for ($code = $this->_segmentTableStartCodes[$i]; $code <= $this->_segmentTableEndCodes[$i]; $code++) {
                $characterCodes[] = $code;
            }
        }
        return $characterCodes;
    }

    
    /**
     * Returns an array containing the glyphs numbers that have entries in this character map.
     * Keys are Unicode character codes (integers)
     * 
     * This functionality is partially covered by glyphNumbersForCharacters(getCoveredCharacters())
     * call, but this method do it in more effective way (prepare complete list instead of searching 
     * glyph for each character code).
     *
     * @internal
     * @return array Array representing <Unicode character code> => <glyph number> pairs.
     */
    public function getCoveredCharactersGlyphs()
    {
        $glyphNumbers = array();
        
        for ($segmentNum = 1; $segmentNum <= $this->_segmentCount; $segmentNum++) {
            if ($this->_segmentTableIdRangeOffsets[$segmentNum] == 0) {
                $delta = $this->_segmentTableIdDeltas[$segmentNum];

                for ($code =  $this->_segmentTableStartCodes[$segmentNum];
                     $code <= $this->_segmentTableEndCodes[$segmentNum];
                     $code++) {
                    $glyphNumbers[$code] = ($code + $delta) % 65536;
                }
            } else {
                $code       = $this->_segmentTableStartCodes[$segmentNum];
                $glyphIndex = $this->_segmentTableIdRangeOffsets[$segmentNum] - ($this->_segmentCount - $segmentNum) - 1;

                while ($code <= $this->_segmentTableEndCodes[$segmentNum]) {
                    $glyphNumbers[$code] = $this->_glyphIndexArray[$glyphIndex];

                    $code++;
                    $glyphIndex++;
                }
            }
        }
        
        return $glyphNumbers;
    }



  /* Object Lifecycle */

    /**
     * Object constructor
     *
     * Parses the raw binary table data. Throws an exception if the table is
     * malformed.
     *
     * @param string $cmapData Raw binary cmap table data.
     * @throws Zend_Pdf_Exception
     */
    public function __construct($cmapData)
    {
        /* Sanity check: The table should be at least 23 bytes in size.
         */
        $actualLength = strlen($cmapData);
        if ($actualLength < 23) {
            throw new Zend_Pdf_Exception('Insufficient table data',
                                         Zend_Pdf_Exception::CMAP_TABLE_DATA_TOO_SMALL);
        }

        /* Sanity check: Make sure this is right data for this table type.
         */
        $type = $this->_extractUInt2($cmapData, 0);
        if ($type != Zend_Pdf_Cmap::TYPE_SEGMENT_TO_DELTA) {
            throw new Zend_Pdf_Exception('Wrong cmap table type',
                                         Zend_Pdf_Exception::CMAP_WRONG_TABLE_TYPE);
        }

        $length = $this->_extractUInt2($cmapData, 2);
        if ($length != $actualLength) {
            throw new Zend_Pdf_Exception("Table length ($length) does not match actual length ($actualLength)",
                                         Zend_Pdf_Exception::CMAP_WRONG_TABLE_LENGTH);
        }

        /* Mapping tables should be language-independent. The font may not work
         * as expected if they are not. Unfortunately, many font files in the
         * wild incorrectly record a language ID in this field, so we can't
         * call this a failure.
         */
        $language = $this->_extractUInt2($cmapData, 4);
        if ($language != 0) {
            // Record a warning here somehow?
        }

        /* These two values are stored premultiplied by two which is convienent
         * when using the binary data directly, but we're parsing it out to
         * native PHP data types, so divide by two.
         */
        $this->_segmentCount = $this->_extractUInt2($cmapData, 6) >> 1;
        $this->_searchRange  = $this->_extractUInt2($cmapData, 8) >> 1;

        $this->_searchIterations = $this->_extractUInt2($cmapData, 10) + 1;

        $offset = 14;
        for ($i = 1; $i <= $this->_segmentCount; $i++, $offset += 2) {
            $this->_segmentTableEndCodes[$i] = $this->_extractUInt2($cmapData, $offset);
        }

        $this->_searchRangeEndCode = $this->_segmentTableEndCodes[$this->_searchRange];

        $offset += 2;    // reserved bytes

        for ($i = 1; $i <= $this->_segmentCount; $i++, $offset += 2) {
            $this->_segmentTableStartCodes[$i] = $this->_extractUInt2($cmapData, $offset);
        }

        for ($i = 1; $i <= $this->_segmentCount; $i++, $offset += 2) {
            $this->_segmentTableIdDeltas[$i] = $this->_extractInt2($cmapData, $offset);    // signed
        }

        /* The range offset helps determine the index into the glyph index array.
         * Like the segment count and search range above, it's stored as a byte
         * multiple in the font, so divide by two as we extract the values.
         */
        for ($i = 1; $i <= $this->_segmentCount; $i++, $offset += 2) {
            $this->_segmentTableIdRangeOffsets[$i] = $this->_extractUInt2($cmapData, $offset) >> 1;
        }

        /* The size of the glyph index array varies by font and depends on the
         * extent of the usage of range offsets versus deltas. Some fonts may
         * not have any entries in this array.
         */
        for (; $offset < $length; $offset += 2) {
            $this->_glyphIndexArray[] = $this->_extractUInt2($cmapData, $offset);
        }

        /* Sanity check: After reading all of the data, we should be at the end
         * of the table.
         */
        if ($offset != $length) {
            throw new Zend_Pdf_Exception("Ending offset ($offset) does not match length ($length)",
                                         Zend_Pdf_Exception::CMAP_FINAL_OFFSET_NOT_LENGTH);
        }
    }

}