Xml.php

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<?php
namespace MediaWiki\Xml;
 
use MediaWiki\Html\Html;
use MediaWiki\MediaWikiServices;
use MediaWiki\Parser\Sanitizer;
use UtfNormal\Validator;
 
class Xml {
    public static function element( $element, $attribs = null, $contents = '',
        $allowShortTag = true
    ) {
        $out = '<' . $element;
        if ( $attribs !== null ) {
            $out .= self::expandAttributes( $attribs );
        }
        if ( $contents === null ) {
            $out .= '>';
        } elseif ( $allowShortTag && $contents === '' ) {
            $out .= ' />';
        } else {
            // @phan-suppress-next-line PhanTypeMismatchArgumentNullableInternal $contents is non-nullable
            $out .= '>' . htmlspecialchars( $contents, ENT_NOQUOTES ) . "</$element>";
        }
        return $out;
    }
 
    public static function expandAttributes( ?array $attribs ) {
        if ( $attribs === null ) {
            return null;
        }
        $out = '';
        foreach ( $attribs as $name => $val ) {
            $out .= " {$name}=\"" . Sanitizer::encodeAttribute( $val ) . '"';
        }
        return $out;
    }
 
    public static function elementClean( $element, $attribs = [], $contents = '' ) {
        if ( $attribs ) {
            $attribs = array_map( Validator::cleanUp( ... ), $attribs );
        }
        if ( $contents ) {
            $contents =
                MediaWikiServices::getInstance()->getContentLanguage()->normalize( $contents );
        }
        return self::element( $element, $attribs, $contents );
    }
 
    public static function openElement( $element, $attribs = null ) {
        return '<' . $element . self::expandAttributes( $attribs ) . '>';
    }
 
    public static function closeElement( $element ) {
        return "</$element>";
    }
 
    public static function tags( $element, $attribs, $contents ) {
        return self::openElement( $element, $attribs ) . $contents . "</$element>";
    }
 
    public static function attrib( $name, $present = true ) {
        return $present ? [ $name => $name ] : [];
    }
 
    public static function label( $label, $id, $attribs = [] ) {
        $a = [ 'for' => $id ];
 
        foreach ( [ 'class', 'title' ] as $attr ) {
            if ( isset( $attribs[$attr] ) ) {
                $a[$attr] = $attribs[$attr];
            }
        }
 
        return self::element( 'label', $a, $label );
    }
 
    public static function option( $text, $value = null, $selected = false,
            $attribs = [] ) {
        if ( $value !== null ) {
            $attribs['value'] = $value;
        }
        if ( $selected ) {
            $attribs['selected'] = 'selected';
        }
        return Html::element( 'option', $attribs, $text );
    }
 
    public static function listDropdown( $name = '', $list = '', $other = '',
        $selected = '', $class = '', $tabindex = null
    ) {
        $options = self::listDropdownOptions( $list, [ 'other' => $other ] );
 
        $xmlSelect = new XmlSelect( $name, $name, $selected );
        $xmlSelect->addOptions( $options );
 
        if ( $class ) {
            $xmlSelect->setAttribute( 'class', $class );
        }
        if ( $tabindex ) {
            $xmlSelect->setAttribute( 'tabindex', $tabindex );
        }
 
        return $xmlSelect->getHTML();
    }
 
    public static function listDropdownOptions( $list, $params = [] ) {
        $options = [];
 
        if ( isset( $params['other'] ) ) {
            $options[ $params['other'] ] = 'other';
        }
 
        $optgroup = false;
        foreach ( explode( "\n", $list ) as $option ) {
            $value = trim( $option );
            if ( $value == '' ) {
                continue;
            }
            if ( str_starts_with( $value, '*' ) && substr( $value, 1, 1 ) != '*' ) {
                # A new group is starting...
                $value = trim( substr( $value, 1 ) );
                if ( $value !== '' &&
                    // Do not use the value for 'other' as option group - T251351
                    ( !isset( $params['other'] ) || $value !== $params['other'] )
                ) {
                    $optgroup = $value;
                } else {
                    $optgroup = false;
                }
            } elseif ( str_starts_with( $value, '**' ) ) {
                # groupmember
                $opt = trim( substr( $value, 2 ) );
                if ( $optgroup === false ) {
                    $options[$opt] = $opt;
                } else {
                    $options[$optgroup][$opt] = $opt;
                }
            } else {
                # groupless reason list
                $optgroup = false;
                $options[$option] = $option;
            }
        }
 
        return $options;
    }
 
    public static function listDropdownOptionsOoui( $options ) {
        $optionsOoui = [];
 
        foreach ( $options as $text => $value ) {
            if ( is_array( $value ) ) {
                $optionsOoui[] = [ 'optgroup' => (string)$text ];
                foreach ( $value as $text2 => $value2 ) {
                    $optionsOoui[] = [ 'data' => (string)$value2, 'label' => (string)$text2 ];
                }
            } else {
                $optionsOoui[] = [ 'data' => (string)$value, 'label' => (string)$text ];
            }
        }
 
        return $optionsOoui;
    }
 
    public static function fieldset( $legend = false, $content = false, $attribs = [] ) {
        $s = self::openElement( 'fieldset', $attribs ) . "\n";
 
        if ( $legend ) {
            $s .= self::element( 'legend', null, $legend ) . "\n";
        }
 
        if ( $content !== false ) {
            $s .= $content . "\n";
            $s .= self::closeElement( 'fieldset' ) . "\n";
        }
 
        return $s;
    }
 
    private static function isWellFormed( $text ) {
        $parser = xml_parser_create( "UTF-8" );
 
        # case folding violates XML standard, turn it off
        xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, 0 );
 
        if ( !xml_parse( $parser, $text, true ) ) {
            return false;
        }
        return true;
    }
 
    public static function isWellFormedXmlFragment( $text ) {
        $html =
            Sanitizer::hackDocType() .
            '<html>' .
            $text .
            '</html>';
 
        return self::isWellFormed( $html );
    }
 
    public static function escapeTagsOnly( $in ) {
        return str_replace(
            [ '"', '>', '<' ],
            [ '&quot;', '&gt;', '&lt;' ],
            $in );
    }
 
    public static function buildForm( $fields, $submitLabel = null, $submitAttribs = [] ) {
        $form = '';
        $form .= "<table><tbody>";
 
        foreach ( $fields as $labelmsg => $input ) {
            $id = "mw-$labelmsg";
            $form .= self::openElement( 'tr', [ 'id' => $id ] );
 
            // TODO use a <label> here for accessibility purposes - will need
            // to either not use a table to build the form, or find the ID of
            // the input somehow.
 
            $form .= self::tags( 'td', [ 'class' => 'mw-label' ], wfMessage( $labelmsg )->parse() );
            $form .= self::openElement( 'td', [ 'class' => 'mw-input' ] )
                . $input . self::closeElement( 'td' );
            $form .= self::closeElement( 'tr' );
        }
 
        if ( $submitLabel ) {
            $form .= self::openElement( 'tr' );
            $form .= self::tags( 'td', [], '' );
            $form .= self::openElement( 'td', [ 'class' => 'mw-submit' ] )
                . Html::element(
                    'input',
                    $submitAttribs + [
                        'type' => 'submit',
                        'value' => wfMessage( $submitLabel )->text(),
                    ]
                )
                . self::closeElement( 'td' );
            $form .= self::closeElement( 'tr' );
        }
 
        $form .= "</tbody></table>";
 
        return $form;
    }
}
class_alias( Xml::class, 'Xml' );