Verzeichnisstruktur phpBB-3.1.0
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- 27.10.2014
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Error.php
001 <?php
002
003 /*
004 * This file is part of Twig.
005 *
006 * (c) 2009 Fabien Potencier
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 /**
013 * Twig base exception.
014 *
015 * This exception class and its children must only be used when
016 * an error occurs during the loading of a template, when a syntax error
017 * is detected in a template, or when rendering a template. Other
018 * errors must use regular PHP exception classes (like when the template
019 * cache directory is not writable for instance).
020 *
021 * To help debugging template issues, this class tracks the original template
022 * name and line where the error occurred.
023 *
024 * Whenever possible, you must set these information (original template name
025 * and line number) yourself by passing them to the constructor. If some or all
026 * these information are not available from where you throw the exception, then
027 * this class will guess them automatically (when the line number is set to -1
028 * and/or the filename is set to null). As this is a costly operation, this
029 * can be disabled by passing false for both the filename and the line number
030 * when creating a new instance of this class.
031 *
032 * @author Fabien Potencier <fabien@symfony.com>
033 */
034 class Twig_Error extends Exception
035 {
036 protected $lineno;
037 protected $filename;
038 protected $rawMessage;
039 protected $previous;
040
041 /**
042 * Constructor.
043 *
044 * Set both the line number and the filename to false to
045 * disable automatic guessing of the original template name
046 * and line number.
047 *
048 * Set the line number to -1 to enable its automatic guessing.
049 * Set the filename to null to enable its automatic guessing.
050 *
051 * By default, automatic guessing is enabled.
052 *
053 * @param string $message The error message
054 * @param integer $lineno The template line where the error occurred
055 * @param string $filename The template file name where the error occurred
056 * @param Exception $previous The previous exception
057 */
058 public function __construct($message, $lineno = -1, $filename = null, Exception $previous = null)
059 {
060 if (version_compare(PHP_VERSION, '5.3.0', '<')) {
061 $this->previous = $previous;
062 parent::__construct('');
063 } else {
064 parent::__construct('', 0, $previous);
065 }
066
067 $this->lineno = $lineno;
068 $this->filename = $filename;
069
070 if (-1 === $this->lineno || null === $this->filename) {
071 $this->guessTemplateInfo();
072 }
073
074 $this->rawMessage = $message;
075
076 $this->updateRepr();
077 }
078
079 /**
080 * Gets the raw message.
081 *
082 * @return string The raw message
083 */
084 public function getRawMessage()
085 {
086 return $this->rawMessage;
087 }
088
089 /**
090 * Gets the filename where the error occurred.
091 *
092 * @return string The filename
093 */
094 public function getTemplateFile()
095 {
096 return $this->filename;
097 }
098
099 /**
100 * Sets the filename where the error occurred.
101 *
102 * @param string $filename The filename
103 */
104 public function setTemplateFile($filename)
105 {
106 $this->filename = $filename;
107
108 $this->updateRepr();
109 }
110
111 /**
112 * Gets the template line where the error occurred.
113 *
114 * @return integer The template line
115 */
116 public function getTemplateLine()
117 {
118 return $this->lineno;
119 }
120
121 /**
122 * Sets the template line where the error occurred.
123 *
124 * @param integer $lineno The template line
125 */
126 public function setTemplateLine($lineno)
127 {
128 $this->lineno = $lineno;
129
130 $this->updateRepr();
131 }
132
133 public function guess()
134 {
135 $this->guessTemplateInfo();
136 $this->updateRepr();
137 }
138
139 /**
140 * For PHP < 5.3.0, provides access to the getPrevious() method.
141 *
142 * @param string $method The method name
143 * @param array $arguments The parameters to be passed to the method
144 *
145 * @return Exception The previous exception or null
146 *
147 * @throws BadMethodCallException
148 */
149 public function __call($method, $arguments)
150 {
151 if ('getprevious' == strtolower($method)) {
152 return $this->previous;
153 }
154
155 throw new BadMethodCallException(sprintf('Method "Twig_Error::%s()" does not exist.', $method));
156 }
157
158 protected function updateRepr()
159 {
160 $this->message = $this->rawMessage;
161
162 $dot = false;
163 if ('.' === substr($this->message, -1)) {
164 $this->message = substr($this->message, 0, -1);
165 $dot = true;
166 }
167
168 if ($this->filename) {
169 if (is_string($this->filename) || (is_object($this->filename) && method_exists($this->filename, '__toString'))) {
170 $filename = sprintf('"%s"', $this->filename);
171 } else {
172 $filename = json_encode($this->filename);
173 }
174 $this->message .= sprintf(' in %s', $filename);
175 }
176
177 if ($this->lineno && $this->lineno >= 0) {
178 $this->message .= sprintf(' at line %d', $this->lineno);
179 }
180
181 if ($dot) {
182 $this->message .= '.';
183 }
184 }
185
186 protected function guessTemplateInfo()
187 {
188 $template = null;
189 $templateClass = null;
190
191 if (version_compare(phpversion(), '5.3.6', '>=')) {
192 $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS | DEBUG_BACKTRACE_PROVIDE_OBJECT);
193 } else {
194 $backtrace = debug_backtrace();
195 }
196
197 foreach ($backtrace as $trace) {
198 if (isset($trace['object']) && $trace['object'] instanceof Twig_Template && 'Twig_Template' !== get_class($trace['object'])) {
199 $currentClass = get_class($trace['object']);
200 $isEmbedContainer = 0 === strpos($templateClass, $currentClass);
201 if (null === $this->filename || ($this->filename == $trace['object']->getTemplateName() && !$isEmbedContainer)) {
202 $template = $trace['object'];
203 $templateClass = get_class($trace['object']);
204 }
205 }
206 }
207
208 // update template filename
209 if (null !== $template && null === $this->filename) {
210 $this->filename = $template->getTemplateName();
211 }
212
213 if (null === $template || $this->lineno > -1) {
214 return;
215 }
216
217 $r = new ReflectionObject($template);
218 $file = $r->getFileName();
219
220 $exceptions = array($e = $this);
221 while (($e instanceof self || method_exists($e, 'getPrevious')) && $e = $e->getPrevious()) {
222 $exceptions[] = $e;
223 }
224
225 while ($e = array_pop($exceptions)) {
226 $traces = $e->getTrace();
227 while ($trace = array_shift($traces)) {
228 if (!isset($trace['file']) || !isset($trace['line']) || $file != $trace['file']) {
229 continue;
230 }
231
232 foreach ($template->getDebugInfo() as $codeLine => $templateLine) {
233 if ($codeLine <= $trace['line']) {
234 // update template line
235 $this->lineno = $templateLine;
236
237 return;
238 }
239 }
240 }
241 }
242 }
243 }
244