4 * Module of static functions for generating XML
9 * Format an XML element with given attributes and, optionally, text content.
10 * Element and attribute names are assumed to be ready for literal inclusion.
11 * Strings are assumed to not contain XML-illegal characters; special
12 * characters (<, >, &) are escaped but illegals are not touched.
14 * @param $element String:
15 * @param $attribs Array: Name=>value pairs. Values will be escaped.
16 * @param $contents String: NULL to make an open tag only; '' for a contentless closed tag (default)
19 public static function element( $element, $attribs = null, $contents = '') {
20 $out = '<' . $element;
21 if( !is_null( $attribs ) ) {
22 foreach( $attribs as $name => $val ) {
23 $out .= ' ' . $name . '="' . Sanitizer
::encodeAttribute( $val ) . '"';
26 if( is_null( $contents ) ) {
29 if( $contents === '' ) {
32 $out .= '>' . htmlspecialchars( $contents ) . "</$element>";
39 * Format an XML element as with self::element(), but run text through the
40 * UtfNormal::cleanUp() validator first to ensure that no invalid UTF-8
43 * @param $element String:
44 * @param $attribs Array: Name=>value pairs. Values will be escaped.
45 * @param $contents String: NULL to make an open tag only; '' for a contentless closed tag (default)
48 public static function elementClean( $element, $attribs = array(), $contents = '') {
50 $attribs = array_map( array( 'UtfNormal', 'cleanUp' ), $attribs );
53 $contents = UtfNormal
::cleanUp( $contents );
55 return self
::element( $element, $attribs, $contents );
59 public static function openElement( $element, $attribs = null ) { return self
::element( $element, $attribs, null ); }
60 public static function closeElement( $element ) { return "</$element>"; }
63 * Create a namespace selector
65 * @param $selected Mixed: the namespace which should be selected, default ''
66 * @param $allnamespaces String: value of a special item denoting all namespaces. Null to not include (default)
67 * @param $includehidden Bool: include hidden namespaces?
68 * @return String: Html string containing the namespace selector
70 public static function &namespaceSelector($selected = '', $allnamespaces = null, $includehidden=false) {
72 if( $selected !== '' ) {
73 if( is_null( $selected ) ) {
74 // No namespace selected; let exact match work without hitting Main
77 // Let input be numeric strings without breaking the empty match.
78 $selected = intval( $selected );
81 $s = "\n<select id='namespace' name='namespace' class='namespaceselector'>\n";
82 $arr = $wgContLang->getFormattedNamespaces();
83 if( !is_null($allnamespaces) ) {
84 $arr = array($allnamespaces => wfMsg('namespacesall')) +
$arr;
86 foreach ($arr as $index => $name) {
87 if ($index < NS_MAIN
) continue;
89 $name = $index !== 0 ?
$name : wfMsg('blanknamespace');
91 if ($index === $selected) {
92 $s .= "\t" . self
::element("option",
93 array("value" => $index, "selected" => "selected"),
96 $s .= "\t" . self
::element("option", array("value" => $index), $name) . "\n";
103 public static function span( $text, $class, $attribs=array() ) {
104 return self
::element( 'span', array( 'class' => $class ) +
$attribs, $text );
108 * Convenience function to build an HTML text input field
109 * @return string HTML
111 public static function input( $name, $size=false, $value=false, $attribs=array() ) {
112 return self
::element( 'input', array(
115 'value' => $value ) +
$attribs );
119 * Internal function for use in checkboxes and radio buttons and such.
122 public static function attrib( $name, $present = true ) {
123 return $present ?
array( $name => $name ) : array();
127 * Convenience function to build an HTML checkbox
128 * @return string HTML
130 public static function check( $name, $checked=false, $attribs=array() ) {
131 return self
::element( 'input', array(
133 'type' => 'checkbox',
134 'value' => 1 ) + self
::attrib( 'checked', $checked ) +
$attribs );
138 * Convenience function to build an HTML radio button
139 * @return string HTML
141 public static function radio( $name, $value, $checked=false, $attribs=array() ) {
142 return self
::element( 'input', array(
145 'value' => $value ) + self
::attrib( 'checked', $checked ) +
$attribs );
149 * Convenience function to build an HTML form label
150 * @return string HTML
152 public static function label( $label, $id ) {
153 return self
::element( 'label', array( 'for' => $id ), $label );
157 * Convenience function to build an HTML text input field with a label
158 * @return string HTML
160 public static function inputLabel( $label, $name, $id, $size=false, $value=false, $attribs=array() ) {
161 return Xml
::label( $label, $id ) .
163 self
::input( $name, $size, $value, array( 'id' => $id ) +
$attribs );
167 * Convenience function to build an HTML checkbox with a label
168 * @return string HTML
170 public static function checkLabel( $label, $name, $id, $checked=false, $attribs=array() ) {
171 return self
::check( $name, $checked, array( 'id' => $id ) +
$attribs ) .
173 self
::label( $label, $id );
177 * Convenience function to build an HTML radio button with a label
178 * @return string HTML
180 public static function radioLabel( $label, $name, $value, $id, $checked=false, $attribs=array() ) {
181 return self
::radio( $name, $value, $checked, array( 'id' => $id ) +
$attribs ) .
183 self
::label( $label, $id );
187 * Convenience function to build an HTML submit button
188 * @param $value String: label text for the button
189 * @param $attribs Array: optional custom attributes
190 * @return string HTML
192 public static function submitButton( $value, $attribs=array() ) {
193 return self
::element( 'input', array( 'type' => 'submit', 'value' => $value ) +
$attribs );
197 * Convenience function to build an HTML hidden form field.
198 * @todo Document $name parameter.
200 * @param $value String: label text for the button
201 * @param $attribs Array: optional custom attributes
202 * @return string HTML
204 public static function hidden( $name, $value, $attribs=array() ) {
205 return self
::element( 'input', array(
208 'value' => $value ) +
$attribs );
212 * Convenience function to build an HTML drop-down list item.
213 * @param $text String: text for this item
214 * @param $value String: form submission value; if empty, use text
215 * @param $selected boolean: if true, will be the default selected item
216 * @param $attribs array: optional additional HTML attributes
217 * @return string HTML
219 public static function option( $text, $value=null, $selected=false,
221 if( !is_null( $value ) ) {
222 $attribs['value'] = $value;
225 $attribs['selected'] = 'selected';
227 return self
::element( 'option', $attribs, $text );
231 * Returns an escaped string suitable for inclusion in a string literal
232 * for JavaScript source code.
233 * Illegal control characters are assumed not to be present.
235 * @param string $string
238 public static function escapeJsString( $string ) {
239 // See ECMA 262 section 7.8.4 for string literal format
247 # To avoid closing the element or CDATA section
251 # To avoid any complaints about bad entity refs
254 return strtr( $string, $pairs );
258 * Check if a string is well-formed XML.
259 * Must include the surrounding tag.
261 * @param $text String: string to test.
264 * @todo Error position reporting return
266 public static function isWellFormed( $text ) {
267 $parser = xml_parser_create( "UTF-8" );
269 # case folding violates XML standard, turn it off
270 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING
, false );
272 if( !xml_parse( $parser, $text, true ) ) {
273 $err = xml_error_string( xml_get_error_code( $parser ) );
274 $position = xml_get_current_byte_index( $parser );
275 //$fragment = $this->extractFragment( $html, $position );
276 //$this->mXmlError = "$err at byte $position:\n$fragment";
277 xml_parser_free( $parser );
280 xml_parser_free( $parser );
285 * Check if a string is a well-formed XML fragment.
286 * Wraps fragment in an \<html\> bit and doctype, so it can be a fragment
287 * and can use HTML named entities.
289 * @param $text String:
292 public static function isWellFormedXmlFragment( $text ) {
294 Sanitizer
::hackDocType() .
298 return Xml
::isWellFormed( $html );