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- 28.08.2024
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OutputFormatter.php
001 <?php
002
003 /*
004 * This file is part of the Symfony package.
005 *
006 * (c) Fabien Potencier <fabien@symfony.com>
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 namespace Symfony\Component\Console\Formatter;
013
014 use Symfony\Component\Console\Exception\InvalidArgumentException;
015
016 /**
017 * Formatter class for console output.
018 *
019 * @author Konstantin Kudryashov <ever.zet@gmail.com>
020 */
021 class OutputFormatter implements OutputFormatterInterface
022 {
023 private $decorated;
024 private $styles = [];
025 private $styleStack;
026
027 /**
028 * Escapes "<" special char in given text.
029 *
030 * @param string $text Text to escape
031 *
032 * @return string Escaped text
033 */
034 public static function escape($text)
035 {
036 $text = preg_replace('/([^\\\\]?)</', '$1\\<', $text);
037
038 return self::escapeTrailingBackslash($text);
039 }
040
041 /**
042 * Escapes trailing "\" in given text.
043 *
044 * @param string $text Text to escape
045 *
046 * @return string Escaped text
047 *
048 * @internal
049 */
050 public static function escapeTrailingBackslash($text)
051 {
052 if ('\\' === substr($text, -1)) {
053 $len = \strlen($text);
054 $text = rtrim($text, '\\');
055 $text = str_replace("\0", '', $text);
056 $text .= str_repeat("\0", $len - \strlen($text));
057 }
058
059 return $text;
060 }
061
062 /**
063 * Initializes console output formatter.
064 *
065 * @param bool $decorated Whether this formatter should actually decorate strings
066 * @param OutputFormatterStyleInterface[] $styles Array of "name => FormatterStyle" instances
067 */
068 public function __construct($decorated = false, array $styles = [])
069 {
070 $this->decorated = (bool) $decorated;
071
072 $this->setStyle('error', new OutputFormatterStyle('white', 'red'));
073 $this->setStyle('info', new OutputFormatterStyle('green'));
074 $this->setStyle('comment', new OutputFormatterStyle('yellow'));
075 $this->setStyle('question', new OutputFormatterStyle('black', 'cyan'));
076
077 foreach ($styles as $name => $style) {
078 $this->setStyle($name, $style);
079 }
080
081 $this->styleStack = new OutputFormatterStyleStack();
082 }
083
084 /**
085 * {@inheritdoc}
086 */
087 public function setDecorated($decorated)
088 {
089 $this->decorated = (bool) $decorated;
090 }
091
092 /**
093 * {@inheritdoc}
094 */
095 public function isDecorated()
096 {
097 return $this->decorated;
098 }
099
100 /**
101 * {@inheritdoc}
102 */
103 public function setStyle($name, OutputFormatterStyleInterface $style)
104 {
105 $this->styles[strtolower($name)] = $style;
106 }
107
108 /**
109 * {@inheritdoc}
110 */
111 public function hasStyle($name)
112 {
113 return isset($this->styles[strtolower($name)]);
114 }
115
116 /**
117 * {@inheritdoc}
118 */
119 public function getStyle($name)
120 {
121 if (!$this->hasStyle($name)) {
122 throw new InvalidArgumentException(sprintf('Undefined style: "%s".', $name));
123 }
124
125 return $this->styles[strtolower($name)];
126 }
127
128 /**
129 * {@inheritdoc}
130 */
131 public function format($message)
132 {
133 $message = (string) $message;
134 $offset = 0;
135 $output = '';
136 $tagRegex = '[a-z][a-z0-9,_=;-]*+';
137 preg_match_all("#<(($tagRegex) | /($tagRegex)?)>#ix", $message, $matches, \PREG_OFFSET_CAPTURE);
138 foreach ($matches[0] as $i => $match) {
139 $pos = $match[1];
140 $text = $match[0];
141
142 if (0 != $pos && '\\' == $message[$pos - 1]) {
143 continue;
144 }
145
146 // add the text up to the next tag
147 $output .= $this->applyCurrentStyle(substr($message, $offset, $pos - $offset));
148 $offset = $pos + \strlen($text);
149
150 // opening tag?
151 if ($open = '/' != $text[1]) {
152 $tag = $matches[1][$i][0];
153 } else {
154 $tag = isset($matches[3][$i][0]) ? $matches[3][$i][0] : '';
155 }
156
157 if (!$open && !$tag) {
158 // </>
159 $this->styleStack->pop();
160 } elseif (false === $style = $this->createStyleFromString($tag)) {
161 $output .= $this->applyCurrentStyle($text);
162 } elseif ($open) {
163 $this->styleStack->push($style);
164 } else {
165 $this->styleStack->pop($style);
166 }
167 }
168
169 $output .= $this->applyCurrentStyle(substr($message, $offset));
170
171 if (false !== strpos($output, "\0")) {
172 return strtr($output, ["\0" => '\\', '\\<' => '<']);
173 }
174
175 return str_replace('\\<', '<', $output);
176 }
177
178 /**
179 * @return OutputFormatterStyleStack
180 */
181 public function getStyleStack()
182 {
183 return $this->styleStack;
184 }
185
186 /**
187 * Tries to create new style instance from string.
188 *
189 * @param string $string
190 *
191 * @return OutputFormatterStyle|false false if string is not format string
192 */
193 private function createStyleFromString($string)
194 {
195 if (isset($this->styles[$string])) {
196 return $this->styles[$string];
197 }
198
199 if (!preg_match_all('/([^=]+)=([^;]+)(;|$)/', $string, $matches, \PREG_SET_ORDER)) {
200 return false;
201 }
202
203 $style = new OutputFormatterStyle();
204 foreach ($matches as $match) {
205 array_shift($match);
206 $match[0] = strtolower($match[0]);
207
208 if ('fg' == $match[0]) {
209 $style->setForeground(strtolower($match[1]));
210 } elseif ('bg' == $match[0]) {
211 $style->setBackground(strtolower($match[1]));
212 } elseif ('options' === $match[0]) {
213 preg_match_all('([^,;]+)', strtolower($match[1]), $options);
214 $options = array_shift($options);
215 foreach ($options as $option) {
216 try {
217 $style->setOption($option);
218 } catch (\InvalidArgumentException $e) {
219 @trigger_error(sprintf('Unknown style options are deprecated since Symfony 3.2 and will be removed in 4.0. Exception "%s".', $e->getMessage()), \E_USER_DEPRECATED);
220
221 return false;
222 }
223 }
224 } else {
225 return false;
226 }
227 }
228
229 return $style;
230 }
231
232 /**
233 * Applies current style from stack to text, if must be applied.
234 *
235 * @param string $text Input text
236 *
237 * @return string Styled text
238 */
239 private function applyCurrentStyle($text)
240 {
241 return $this->isDecorated() && \strlen($text) > 0 ? $this->styleStack->getCurrent()->apply($text) : $text;
242 }
243 }
244