/**
* Attempts to extract a TrueType font from the data source.
*
* If the font parser throws an exception that suggests the data source
* simply doesn't contain a TrueType font, catches it and returns null. If
* an exception is thrown that suggests the TrueType font is corrupt or
* otherwise unusable, throws that exception. If successful, returns the
* font object.
*
* @param Zend_Pdf_FileParserDataSource $dataSource
* @param integer $embeddingOptions Options for font embedding.
* @return Zend_Pdf_Resource_Font_OpenType_TrueType May also return null if
* the data source does not appear to contain a TrueType font.
* @throws Zend_Pdf_Exception
*/
protected static function _extractTrueTypeFont($dataSource, $embeddingOptions)
{
try {
$fontParser = new Zend_Pdf_FileParser_Font_OpenType_TrueType($dataSource);
$fontParser->parse();
if ($fontParser->isAdobeLatinSubset) {
$font = new Zend_Pdf_Resource_Font_Simple_Parsed_TrueType($fontParser, $embeddingOptions);
} else {
/* Use Composite Type 0 font which supports Unicode character mapping */
$cidFont = new Zend_Pdf_Resource_Font_CidFont_TrueType($fontParser, $embeddingOptions);
$font = new Zend_Pdf_Resource_Font_Type0($cidFont);
}
} catch (Zend_Pdf_Exception $exception) {
/* The following exception codes suggest that this isn't really a
* TrueType font. If we caught such an exception, simply return
* null. For all other cases, it probably is a TrueType font but has
* a problem; throw the exception again.
*/
$fontParser = null;
switch ($exception->getCode()) {
case Zend_Pdf_Exception::WRONG_FONT_TYPE:
// break intentionally omitted
// break intentionally omitted
case Zend_Pdf_Exception::BAD_TABLE_COUNT:
// break intentionally omitted
// break intentionally omitted
case Zend_Pdf_Exception::BAD_MAGIC_NUMBER:
return null;
default:
throw $exception;
}
}
return $font;
}
protected static function _extractTrueTypeFont($dataSource, $embeddingOptions)
{
try {
$fontParser = new Zend_Pdf_FileParser_Font_OpenType_TrueType($dataSource);
$fontParser->parse();
if ($fontParser->isAdobeLatinSubset) {
$font = new Zend_Pdf_Resource_Font_Simple_Parsed_TrueType($fontParser, $embeddingOptions);
} else {
$cidFont = new Zend_Pdf_Resource_Font_CidFont_TrueType($fontParser, $embeddingOptions);
$font = new Zend_Pdf_Resource_Font_Type0($cidFont);
}
} catch (Zend_Pdf_Exception $e) {
$fontParser = null;
switch ($e->getCode()) {
case Zend_Pdf_Exception::WRONG_FONT_TYPE:
case Zend_Pdf_Exception::BAD_TABLE_COUNT:
case Zend_Pdf_Exception::BAD_MAGIC_NUMBER:
return null;
default:
throw new Zend_Pdf_Exception($e->getMessage(), $e->getCode(), $e);
}
}
return $font;
}
