| 53 | | private function __construct() { } |
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| | 90 | public function __construct($source) |
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| | 91 | { |
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| | 92 | // Prevent spitting out errors to we can throw exceptions |
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| | 93 | $old_setting = libxml_use_internal_errors(TRUE); |
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| | 94 | |
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| | 95 | $exception_message = NULL; |
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| | 96 | try { |
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| | 97 | if ($source instanceof DOMElement) { |
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| | 98 | $this->__dom = $source; |
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| | 99 | $xml = TRUE; |
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| | 100 | |
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| | 101 | } elseif ($source instanceof fFile) { |
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| | 102 | $xml = simplexml_load_file($source->getPath()); |
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| | 103 | |
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| | 104 | } else { |
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| | 105 | $is_path = $source && !preg_match('#^\s*<#', $source); |
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| | 106 | $xml = new SimpleXMLElement($source, 0, $is_path); |
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| | 107 | } |
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| | 108 | |
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| | 109 | } catch (Exception $e) { |
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| | 110 | $exception_message = $e->getMessage(); |
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| | 111 | $xml = FALSE; |
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| | 112 | } |
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| | 113 | |
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| | 114 | // We want it to be clear when XML parsing issues occur |
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| | 115 | if ($xml === FALSE) { |
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| | 116 | $errors = libxml_get_errors(); |
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| | 117 | foreach ($errors as $error) { |
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| | 118 | $exception_message .= "\n" . $error->message; |
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| | 119 | } |
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| | 120 | // If internal errors were off before, turn them back off |
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| | 121 | if (!$old_setting) { |
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| | 122 | libxml_use_internal_errors(FALSE); |
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| | 123 | } |
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| | 124 | throw new fValidationException(str_replace('%', '%%', $exception_message)); |
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| | 125 | } |
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| | 126 | |
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| | 127 | if (!$old_setting) { |
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| | 128 | libxml_use_internal_errors(FALSE); |
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| | 129 | } |
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| | 130 | |
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| | 131 | if (!$this->__dom) { |
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| | 132 | $this->__dom = dom_import_simplexml($xml); |
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| | 133 | } |
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| | 134 | } |
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| | 135 | |
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| | 136 | |
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| | 137 | /** |
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| | 138 | * Allows access to the text content of a child tag |
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| | 139 | * |
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| | 140 | * The child element name (`$name`) may start with a namespace prefix and a |
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| | 141 | * `:` to indicate what namespace it is part of. A blank namespace prefix |
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| | 142 | * (i.e. an element name starting with `:`) is treated as the XML default |
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| | 143 | * namespace. |
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| | 144 | * |
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| | 145 | * @internal |
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| | 146 | * |
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| | 147 | * @param string $name The child element to retrieve |
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| | 148 | * @return fXML|NULL The child element requested |
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| | 149 | */ |
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| | 150 | public function __get($name) |
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| | 151 | { |
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| | 152 | // Handle nice callback syntax |
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| | 153 | static $methods = array( |
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| | 154 | '__construct' => TRUE, |
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| | 155 | '__get' => TRUE, |
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| | 156 | '__isset' => TRUE, |
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| | 157 | '__sleep' => TRUE, |
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| | 158 | '__toString' => TRUE, |
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| | 159 | '__wakeup' => TRUE, |
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| | 160 | 'addCustomPrefix' => TRUE, |
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| | 161 | 'getName' => TRUE, |
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| | 162 | 'getNamespace' => TRUE, |
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| | 163 | 'getPrefix' => TRUE, |
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| | 164 | 'getText' => TRUE, |
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| | 165 | 'offsetExists' => TRUE, |
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| | 166 | 'offsetGet' => TRUE, |
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| | 167 | 'offsetSet' => TRUE, |
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| | 168 | 'offsetUnset' => TRUE, |
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| | 169 | 'toXML' => TRUE, |
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| | 170 | 'xpath' => TRUE |
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| | 171 | ); |
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| | 172 | |
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| | 173 | if (isset($methods[$name])) { |
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| | 174 | return array($this, $name); |
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| | 175 | } |
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| | 176 | |
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| | 177 | $first_child = $this->query($name . '[1]'); |
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| | 178 | if ($first_child->length) { |
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| | 179 | return $first_child->item(0)->textContent; |
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| | 180 | } |
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| | 181 | |
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| | 182 | return NULL; |
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| | 183 | } |
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| | 184 | |
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| | 185 | |
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| | 186 | /** |
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| | 187 | * The child element name (`$name`) may start with a namespace prefix and a |
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| | 188 | * `:` to indicate what namespace it is part of. A blank namespace prefix |
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| | 189 | * (i.e. an element name starting with `:`) is treated as the XML default |
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| | 190 | * namespace. |
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| | 191 | * |
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| | 192 | * @internal |
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| | 193 | * |
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| | 194 | * @param string $name The child element to check - see method description for details about namespaces |
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| | 195 | * @return boolean If the child element is set |
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| | 196 | */ |
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| | 197 | public function __isset($name) |
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| | 198 | { |
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| | 199 | return (boolean) $this->query($name . '[1]')->length; |
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| | 200 | } |
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| | 201 | |
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| | 202 | |
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| | 203 | /** |
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| | 204 | * Prevents users from trying to set elements |
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| | 205 | * |
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| | 206 | * @internal |
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| | 207 | * |
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| | 208 | * @param string $name The element to set |
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| | 209 | * @param mixed $value The value to set |
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| | 210 | * @return void |
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| | 211 | */ |
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| | 212 | public function __set($name, $value) |
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| | 213 | { |
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| | 214 | throw new fProgrammerException('The %s class does not support modifying XML', __CLASS__); |
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| | 215 | } |
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| | 216 | |
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| | 217 | |
|---|
| | 218 | /** |
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| | 219 | * The XML needs to be made into a string before being serialized |
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| | 220 | * |
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| | 221 | * @internal |
|---|
| | 222 | * |
|---|
| | 223 | * @return array The members to serialize |
|---|
| | 224 | */ |
|---|
| | 225 | public function __sleep() |
|---|
| | 226 | { |
|---|
| | 227 | $this->__xml = $this->toXML(); |
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| | 228 | return array('__custom_prefixes', '__xml'); |
|---|
| | 229 | } |
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| | 230 | |
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| | 231 | |
|---|
| | 232 | /** |
|---|
| | 233 | * Gets the string inside the root XML element |
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| | 234 | * |
|---|
| | 235 | * @return string The text inside the root element |
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| | 236 | */ |
|---|
| | 237 | public function __toString() |
|---|
| | 238 | { |
|---|
| | 239 | return (string) $this->__dom->textContent; |
|---|
| | 240 | } |
|---|
| | 241 | |
|---|
| | 242 | |
|---|
| | 243 | /** |
|---|
| | 244 | * Prevents users from trying to unset elements |
|---|
| | 245 | * |
|---|
| | 246 | * @internal |
|---|
| | 247 | * |
|---|
| | 248 | * @param string $name The element to unset |
|---|
| | 249 | * @return void |
|---|
| | 250 | */ |
|---|
| | 251 | public function __unset($name) |
|---|
| | 252 | { |
|---|
| | 253 | throw new fProgrammerException('The %s class does not support modifying XML', __CLASS__); |
|---|
| | 254 | } |
|---|
| | 255 | |
|---|
| | 256 | |
|---|
| | 257 | /** |
|---|
| | 258 | * The XML needs to be made into a DOMElement when woken up |
|---|
| | 259 | * |
|---|
| | 260 | * @internal |
|---|
| | 261 | * |
|---|
| | 262 | * @return void |
|---|
| | 263 | */ |
|---|
| | 264 | public function __wakeup() |
|---|
| | 265 | { |
|---|
| | 266 | $this->__dom = dom_import_simplexml(new SimpleXMLElement($this->__xml)); |
|---|
| | 267 | $this->__xml = NULL; |
|---|
| | 268 | } |
|---|
| | 269 | |
|---|
| | 270 | |
|---|
| | 271 | /** |
|---|
| | 272 | * Adds a custom namespace prefix to full namespace mapping |
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| | 273 | * |
|---|
| | 274 | * This namespace prefix will be valid for any operation on this object, |
|---|
| | 275 | * including calls to ::xpath(). |
|---|
| | 276 | * |
|---|
| | 277 | * @param string $ns_prefix The custom namespace prefix |
|---|
| | 278 | * @param string $namespace The full namespace it maps to |
|---|
| | 279 | * @return void |
|---|
| | 280 | */ |
|---|
| | 281 | public function addCustomPrefix($ns_prefix, $namespace) |
|---|
| | 282 | { |
|---|
| | 283 | if (!$this->__custom_prefixes) { |
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| | 284 | $this->__custom_prefixes = array(); |
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| | 285 | } |
|---|
| | 286 | $this->__custom_prefixes[$ns_prefix] = $namespace; |
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| | 287 | if ($this->__xpath) { |
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| | 288 | $this->__xpath->registerNamespace($ns_prefix, $namespace); |
|---|
| | 289 | } |
|---|
| | 290 | } |
|---|
| | 291 | |
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| | 292 | |
|---|
| | 293 | /** |
|---|
| | 294 | * Returns the name of the current element |
|---|
| | 295 | * |
|---|
| | 296 | * @return string The name of the current element |
|---|
| | 297 | */ |
|---|
| | 298 | public function getName() |
|---|
| | 299 | { |
|---|
| | 300 | return $this->__dom->localName; |
|---|
| | 301 | } |
|---|
| | 302 | |
|---|
| | 303 | |
|---|
| | 304 | /** |
|---|
| | 305 | * Returns the namespace of the current element |
|---|
| | 306 | * |
|---|
| | 307 | * @return string The namespace of the current element |
|---|
| | 308 | */ |
|---|
| | 309 | public function getNamespace() |
|---|
| | 310 | { |
|---|
| | 311 | return $this->__dom->namespaceURI; |
|---|
| | 312 | } |
|---|
| | 313 | |
|---|
| | 314 | |
|---|
| | 315 | /** |
|---|
| | 316 | * Returns the namespace prefix of the current element |
|---|
| | 317 | * |
|---|
| | 318 | * @return string The namespace prefix of the current element |
|---|
| | 319 | */ |
|---|
| | 320 | public function getPrefix() |
|---|
| | 321 | { |
|---|
| | 322 | return $this->__dom->prefix; |
|---|
| | 323 | } |
|---|
| | 324 | |
|---|
| | 325 | |
|---|
| | 326 | /** |
|---|
| | 327 | * Returns the string text of the current element |
|---|
| | 328 | * |
|---|
| | 329 | * @return string The string text of the current element |
|---|
| | 330 | */ |
|---|
| | 331 | public function getText() |
|---|
| | 332 | { |
|---|
| | 333 | return (string) $this->__dom->textContent; |
|---|
| | 334 | } |
|---|
| | 335 | |
|---|
| | 336 | |
|---|
| | 337 | /** |
|---|
| | 338 | * Provides functionality for isset() and empty() (required by arrayaccess interface) |
|---|
| | 339 | * |
|---|
| | 340 | * Offsets refers to an attribute name. Attribute may start with a namespace |
|---|
| | 341 | * prefix and a `:` to indicate what namespace the attribute is part of. A |
|---|
| | 342 | * blank namespace prefix (i.e. an offset starting with `:`) is treated as |
|---|
| | 343 | * the XML default namespace. |
|---|
| | 344 | * |
|---|
| | 345 | * @internal |
|---|
| | 346 | * |
|---|
| | 347 | * @param string $offset The offset to check |
|---|
| | 348 | * @return boolean If the offset exists |
|---|
| | 349 | */ |
|---|
| | 350 | public function offsetExists($offset) |
|---|
| | 351 | { |
|---|
| | 352 | return (boolean) $this->query('@' . $offset . '[1]')->length; |
|---|
| | 353 | } |
|---|
| | 354 | |
|---|
| | 355 | |
|---|
| | 356 | /** |
|---|
| | 357 | * Provides functionality for get [index] syntax (required by ArrayAccess interface) |
|---|
| | 358 | * |
|---|
| | 359 | * Offsets refers to an attribute name. Attribute may start with a namespace |
|---|
| | 360 | * prefix and a `:` to indicate what namespace the attribute is part of. A |
|---|
| | 361 | * blank namespace prefix (i.e. an offset starting with `:`) is treated as |
|---|
| | 362 | * the XML default namespace. |
|---|
| | 363 | * |
|---|
| | 364 | * @internal |
|---|
| | 365 | * |
|---|
| | 366 | * @param string $offset The attribute to retrieve the value for |
|---|
| | 367 | * @return string The value of the offset |
|---|
| | 368 | */ |
|---|
| | 369 | public function offsetGet($offset) |
|---|
| | 370 | { |
|---|
| | 371 | $attribute = $this->query('@' . $offset . '[1]'); |
|---|
| | 372 | if ($attribute->length) { |
|---|
| | 373 | return $attribute->item(0)->nodeValue; |
|---|
| | 374 | } |
|---|
| | 375 | return NULL; |
|---|
| | 376 | } |
|---|
| | 377 | |
|---|
| | 378 | |
|---|
| | 379 | /** |
|---|
| | 380 | * Required by ArrayAccess interface |
|---|
| | 381 | * |
|---|
| | 382 | * @internal |
|---|
| | 383 | * |
|---|
| | 384 | * @param integer|string $offset The offset to set |
|---|
| | 385 | * @return void |
|---|
| | 386 | */ |
|---|
| | 387 | public function offsetSet($offset, $value) |
|---|
| | 388 | { |
|---|
| | 389 | throw new fProgrammerException('The %s class does not support modifying XML', __CLASS__); |
|---|
| | 390 | } |
|---|
| | 391 | |
|---|
| | 392 | |
|---|
| | 393 | /** |
|---|
| | 394 | * Required by ArrayAccess interface |
|---|
| | 395 | * |
|---|
| | 396 | * @internal |
|---|
| | 397 | * |
|---|
| | 398 | * @param integer|string $offset The offset to unset |
|---|
| | 399 | * @return void |
|---|
| | 400 | */ |
|---|
| | 401 | public function offsetUnset($offset) |
|---|
| | 402 | { |
|---|
| | 403 | throw new fProgrammerException('The %s class does not support modifying XML', __CLASS__); |
|---|
| | 404 | } |
|---|
| | 405 | |
|---|
| | 406 | |
|---|
| | 407 | /** |
|---|
| | 408 | * Performs an XPath query on the current element, returning the raw results |
|---|
| | 409 | * |
|---|
| | 410 | * @param string $path The XPath path to query |
|---|
| | 411 | * @return array The matching elements |
|---|
| | 412 | */ |
|---|
| | 413 | protected function query($path) |
|---|
| | 414 | { |
|---|
| | 415 | if (!$this->__xpath) { |
|---|
| | 416 | $this->__xpath = new DOMXPath($this->__dom->ownerDocument); |
|---|
| | 417 | if ($this->__custom_prefixes) { |
|---|
| | 418 | foreach ($this->__custom_prefixes as $prefix => $namespace) { |
|---|
| | 419 | $this->__xpath->registerNamespace($prefix, $namespace); |
|---|
| | 420 | } |
|---|
| | 421 | } |
|---|
| | 422 | } |
|---|
| | 423 | |
|---|
| | 424 | // Prevent spitting out errors to we can throw exceptions |
|---|
| | 425 | $old_setting = libxml_use_internal_errors(TRUE); |
|---|
| | 426 | |
|---|
| | 427 | $result = $this->__xpath->query($path, $this->__dom); |
|---|
| | 428 | |
|---|
| | 429 | // We want it to be clear when XML parsing issues occur |
|---|
| | 430 | if ($result === FALSE) { |
|---|
| | 431 | $errors = libxml_get_errors(); |
|---|
| | 432 | $exception_message = ''; |
|---|
| | 433 | |
|---|
| | 434 | foreach ($errors as $error) { |
|---|
| | 435 | $exception_message .= "\n" . $error->message; |
|---|
| | 436 | } |
|---|
| | 437 | |
|---|
| | 438 | // If internal errors were off before, turn them back off |
|---|
| | 439 | if (!$old_setting) { |
|---|
| | 440 | libxml_use_internal_errors(FALSE); |
|---|
| | 441 | } |
|---|
| | 442 | |
|---|
| | 443 | throw new fProgrammerException(str_replace('%', '%%', trim($exception_message))); |
|---|
| | 444 | } |
|---|
| | 445 | |
|---|
| | 446 | if (!$old_setting) { |
|---|
| | 447 | libxml_use_internal_errors(FALSE); |
|---|
| | 448 | } |
|---|
| | 449 | |
|---|
| | 450 | return $result; |
|---|
| | 451 | } |
|---|
| | 452 | |
|---|
| | 453 | |
|---|
| | 454 | /** |
|---|
| | 455 | * Returns a well-formed XML string from the current element |
|---|
| | 456 | * |
|---|
| | 457 | * @return string The XML |
|---|
| | 458 | */ |
|---|
| | 459 | public function toXML() |
|---|
| | 460 | { |
|---|
| | 461 | return $this->__dom->ownerDocument->saveXML($this->__dom->parentNode === $this->__dom->ownerDocument ? $this->__dom->parentNode : $this->__dom); |
|---|
| | 462 | } |
|---|
| | 463 | |
|---|
| | 464 | |
|---|
| | 465 | /** |
|---|
| | 466 | * Executes an XPath query on the current element, returning an array of matching elements |
|---|
| | 467 | * |
|---|
| | 468 | * @param string $path The XPath path to query |
|---|
| | 469 | * @param boolean $first_only If only the first match should be returned |
|---|
| | 470 | * @return array|string|fXML An array of matching elements, or a string or fXML object if `$first_only` is `TRUE` |
|---|
| | 471 | */ |
|---|
| | 472 | public function xpath($path, $first_only=FALSE) |
|---|
| | 473 | { |
|---|
| | 474 | $result = $this->query($path); |
|---|
| | 475 | |
|---|
| | 476 | if ($first_only) { |
|---|
| | 477 | if (!$result->length) { return NULL; } |
|---|
| | 478 | $result = array($result->item(0)); |
|---|
| | 479 | |
|---|
| | 480 | } else { |
|---|
| | 481 | if (!$result->length) { return array(); } |
|---|
| | 482 | } |
|---|
| | 483 | |
|---|
| | 484 | $keys_to_remove = array(); |
|---|
| | 485 | $output = array(); |
|---|
| | 486 | |
|---|
| | 487 | foreach ($result as $element) { |
|---|
| | 488 | |
|---|
| | 489 | if ($element instanceof DOMElement) { |
|---|
| | 490 | $child = new fXML($element); |
|---|
| | 491 | $child->__custom_prefixes = $this->__custom_prefixes; |
|---|
| | 492 | $output[] = $child; |
|---|
| | 493 | |
|---|
| | 494 | } elseif ($element instanceof DOMCharacterData) { |
|---|
| | 495 | $output[] = $element->data; |
|---|
| | 496 | |
|---|
| | 497 | } elseif ($element instanceof DOMAttr) { |
|---|
| | 498 | |
|---|
| | 499 | $key = $element->name; |
|---|
| | 500 | if ($element->prefix) { |
|---|
| | 501 | $key = $element->prefix . ':' . $key; |
|---|
| | 502 | } |
|---|
| | 503 | |
|---|
| | 504 | // We will create an attrname and attrname[0] key for each |
|---|
| | 505 | // attribute and if more than one is found we remove the |
|---|
| | 506 | // key attrname. If only one is found we remove attrname[0]. |
|---|
| | 507 | $key_1 = $key . '[1]'; |
|---|
| | 508 | |
|---|
| | 509 | if (isset($output[$key_1])) { |
|---|
| | 510 | $i = 1; |
|---|
| | 511 | while (isset($output[$key . '[' . $i . ']'])) { |
|---|
| | 512 | $i++; |
|---|
| | 513 | } |
|---|
| | 514 | |
|---|
| | 515 | // This removes the key without the array index if more than one was found |
|---|
| | 516 | unset($output[$key]); |
|---|
| | 517 | unset($keys_to_remove[$key_1]); |
|---|
| | 518 | |
|---|
| | 519 | $key = $key . '[' . $i . ']'; |
|---|
| | 520 | |
|---|
| | 521 | } else { |
|---|
| | 522 | $output[$key_1] = $element->nodeValue; |
|---|
| | 523 | $keys_to_remove[$key_1] = TRUE; |
|---|
| | 524 | } |
|---|
| | 525 | |
|---|
| | 526 | $output[$key] = $element->nodeValue; |
|---|
| | 527 | } |
|---|
| | 528 | } |
|---|
| | 529 | |
|---|
| | 530 | foreach ($keys_to_remove as $key => $trash) { |
|---|
| | 531 | unset($output[$key]); |
|---|
| | 532 | } |
|---|
| | 533 | |
|---|
| | 534 | if ($first_only) { |
|---|
| | 535 | return current($output); |
|---|
| | 536 | } |
|---|
| | 537 | |
|---|
| | 538 | return $output; |
|---|
| | 539 | } |
|---|