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<?php
namespace SMW\DataValues\ValueFormatters;
use RuntimeException;
use SMW\DataValues\StringValue;
use SMW\Highlighter;
use SMW\Utils\Normalizer;
use SMWDataValue as DataValue;
/**
* @license GNU GPL v2+
* @since 2.4
*
* @author mwjames
*/
class StringValueFormatter extends DataValueFormatter {
/**
* @since 2.4
*
* {@inheritDoc}
*/
public function isFormatterFor( DataValue $dataValue ) {
return $dataValue instanceof StringValue;
}
/**
* @since 2.4
*
* {@inheritDoc}
*/
public function format( $dataValue, $options = null ) {
if ( !is_array( $options ) ) {
throw new RuntimeException( "Option is not an array!" );
}
// Normally we would do `list( $type, $linker ) = $options;` BUT due to
// PHP 7.0 ... "The order that the assignment operations are performed in has changed."
$type = $options[0];
$linker = isset( $options[1] ) ? $options[1] : null;
if ( !$dataValue instanceof StringValue ) {
throw new RuntimeException( "The formatter is missing a valid StringValue object" );
}
if ( $type === self::VALUE ) {
return $dataValue->isValid() ? $dataValue->getDataItem()->getString() : 'error';
}
if ( $dataValue->getCaption() !== false && $type === self::WIKI_SHORT ) {
return $dataValue->getCaption();
}
if ( $dataValue->getCaption() !== false && $type === self::HTML_SHORT ) {
return smwfXMLContentEncode( $dataValue->getCaption() );
}
if ( !$dataValue->isValid() ) {
return $dataValue->getDataItem()->getUserValue();
}
return $this->doFormat( $dataValue, $type, $linker );
}
protected function doFormat( $dataValue, $type, $linker ) {
$text = $dataValue->getDataItem()->getString();
$length = mb_strlen( $text );
// Make a possibly shortened printout string for displaying the value.
// The result is only escaped to be HTML-safe if this is requested
// explicitly. The result will contain mark-up that must not be escaped
// again.
$abbreviate = $type === self::WIKI_LONG || $type === self::HTML_LONG;
$requestedLength = intval( $dataValue->getOutputFormat() );
// Appease the MW parser to correctly apply formatting on the
// first indent
if ( $text !== '' && ( $text{0} === '*' || $text{0} === '#' || $text{0} === ':' ) ) {
$text = "\n" . $text . "\n";
}
if ( $requestedLength > 0 && $requestedLength < $length ) {
// Reduces the length and finish it with a whole word
return Normalizer::reduceLengthTo( $text, $requestedLength ) . ' …';
}
if ( $type === self::HTML_SHORT || $type === self::HTML_LONG ) {
$text = smwfXMLContentEncode( $text );
}
if ( $abbreviate && $length > 255 ) {
$text = $this->getAbbreviatedText( $text, $length, $linker );
}
return $text;
}
private function getAbbreviatedText( $text, $length, $linker ) {
if ( $linker === false || $linker === null ) {
$ellipsis = ' <span class="smwwarning">…</span> ';
} else {
$highlighter = Highlighter::factory( Highlighter::TYPE_TEXT );
$highlighter->setContent( [
'caption' => ' … ',
'content' => $text
] );
$ellipsis = $highlighter->getHtml();
}
$startOff = 42;
$endOff = 42;
// Avoid breaking a link (i.e. [[ ... ]])
if ( ( $pos = stripos ( $text, '[[' ) ) && $pos < 42 ) {
$startOff = stripos ( $text, ']]' ) + 2;
}
if ( ( $pos = strrpos ( $text, ']]' ) ) && $pos > $length - $endOff ) {
$endOff = $length - strrpos( $text, '[[' );
}
return mb_substr( $text, 0, $startOff ) . $ellipsis . mb_substr( $text, $length - $endOff );
}
}
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