diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Pdf/Cmap/TrimmedTable.php --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/web/lib/Zend/Pdf/Cmap/TrimmedTable.php Fri Mar 11 15:05:35 2011 +0100 @@ -0,0 +1,231 @@ + $characterCode) { + + if (($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); + } + } + +}