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- 28.08.2024
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Yaml.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\Yaml;
013
014 use Symfony\Component\Yaml\Exception\ParseException;
015
016 /**
017 * Yaml offers convenience methods to load and dump YAML.
018 *
019 * @author Fabien Potencier <fabien@symfony.com>
020 *
021 * @final since version 3.4
022 */
023 class Yaml
024 {
025 const DUMP_OBJECT = 1;
026 const PARSE_EXCEPTION_ON_INVALID_TYPE = 2;
027 const PARSE_OBJECT = 4;
028 const PARSE_OBJECT_FOR_MAP = 8;
029 const DUMP_EXCEPTION_ON_INVALID_TYPE = 16;
030 const PARSE_DATETIME = 32;
031 const DUMP_OBJECT_AS_MAP = 64;
032 const DUMP_MULTI_LINE_LITERAL_BLOCK = 128;
033 const PARSE_CONSTANT = 256;
034 const PARSE_CUSTOM_TAGS = 512;
035 const DUMP_EMPTY_ARRAY_AS_SEQUENCE = 1024;
036
037 /**
038 * @deprecated since version 3.4, to be removed in 4.0. Quote your evaluable keys instead.
039 */
040 const PARSE_KEYS_AS_STRINGS = 2048;
041
042 /**
043 * Parses a YAML file into a PHP value.
044 *
045 * Usage:
046 *
047 * $array = Yaml::parseFile('config.yml');
048 * print_r($array);
049 *
050 * @param string $filename The path to the YAML file to be parsed
051 * @param int $flags A bit field of PARSE_* constants to customize the YAML parser behavior
052 *
053 * @return mixed The YAML converted to a PHP value
054 *
055 * @throws ParseException If the file could not be read or the YAML is not valid
056 */
057 public static function parseFile($filename, $flags = 0)
058 {
059 $yaml = new Parser();
060
061 return $yaml->parseFile($filename, $flags);
062 }
063
064 /**
065 * Parses YAML into a PHP value.
066 *
067 * Usage:
068 * <code>
069 * $array = Yaml::parse(file_get_contents('config.yml'));
070 * print_r($array);
071 * </code>
072 *
073 * @param string $input A string containing YAML
074 * @param int $flags A bit field of PARSE_* constants to customize the YAML parser behavior
075 *
076 * @return mixed The YAML converted to a PHP value
077 *
078 * @throws ParseException If the YAML is not valid
079 */
080 public static function parse($input, $flags = 0)
081 {
082 if (\is_bool($flags)) {
083 @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', \E_USER_DEPRECATED);
084
085 if ($flags) {
086 $flags = self::PARSE_EXCEPTION_ON_INVALID_TYPE;
087 } else {
088 $flags = 0;
089 }
090 }
091
092 if (\func_num_args() >= 3) {
093 @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the PARSE_OBJECT flag instead.', \E_USER_DEPRECATED);
094
095 if (func_get_arg(2)) {
096 $flags |= self::PARSE_OBJECT;
097 }
098 }
099
100 if (\func_num_args() >= 4) {
101 @trigger_error('Passing a boolean flag to toggle object for map support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT_FOR_MAP flag instead.', \E_USER_DEPRECATED);
102
103 if (func_get_arg(3)) {
104 $flags |= self::PARSE_OBJECT_FOR_MAP;
105 }
106 }
107
108 $yaml = new Parser();
109
110 return $yaml->parse($input, $flags);
111 }
112
113 /**
114 * Dumps a PHP value to a YAML string.
115 *
116 * The dump method, when supplied with an array, will do its best
117 * to convert the array into friendly YAML.
118 *
119 * @param mixed $input The PHP value
120 * @param int $inline The level where you switch to inline YAML
121 * @param int $indent The amount of spaces to use for indentation of nested nodes
122 * @param int $flags A bit field of DUMP_* constants to customize the dumped YAML string
123 *
124 * @return string A YAML string representing the original PHP value
125 */
126 public static function dump($input, $inline = 2, $indent = 4, $flags = 0)
127 {
128 if (\is_bool($flags)) {
129 @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', \E_USER_DEPRECATED);
130
131 if ($flags) {
132 $flags = self::DUMP_EXCEPTION_ON_INVALID_TYPE;
133 } else {
134 $flags = 0;
135 }
136 }
137
138 if (\func_num_args() >= 5) {
139 @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the DUMP_OBJECT flag instead.', \E_USER_DEPRECATED);
140
141 if (func_get_arg(4)) {
142 $flags |= self::DUMP_OBJECT;
143 }
144 }
145
146 $yaml = new Dumper($indent);
147
148 return $yaml->dump($input, $inline, 0, $flags);
149 }
150 }
151