$characterCode) { if (($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 => 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) { // require_once 'Zend/Pdf/Exception.php'; 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) { // require_once 'Zend/Pdf/Exception.php'; throw new Zend_Pdf_Exception('Wrong cmap table type', Zend_Pdf_Exception::CMAP_WRONG_TABLE_TYPE); } $length = $this->_extractUInt2($cmapData, 2); if ($length != $actualLength) { // require_once 'Zend/Pdf/Exception.php'; throw new Zend_Pdf_Exception("Table length ($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) { // require_once 'Zend/Pdf/Exception.php'; 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 != $length) { // require_once 'Zend/Pdf/Exception.php'; throw new Zend_Pdf_Exception("Ending offset ($offset) does not match length ($length)", Zend_Pdf_Exception::CMAP_FINAL_OFFSET_NOT_LENGTH); } } }