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1 <?php
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2
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3 /*
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4 * This file is part of the Symfony package.
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5 *
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6 * (c) Fabien Potencier <fabien@symfony.com>
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7 *
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8 * For the full copyright and license information, please view the LICENSE
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9 * file that was distributed with this source code.
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10 */
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11
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12 namespace Symfony\Component\Yaml;
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13
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14 use Symfony\Component\Yaml\Exception\DumpException;
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15 use Symfony\Component\Yaml\Exception\ParseException;
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16 use Symfony\Component\Yaml\Tag\TaggedValue;
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17
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18 /**
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19 * Inline implements a YAML parser/dumper for the YAML inline syntax.
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20 *
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21 * @author Fabien Potencier <fabien@symfony.com>
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22 *
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23 * @internal
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24 */
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25 class Inline
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26 {
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27 const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*+(?:\\\\.[^"\\\\]*+)*+)"|\'([^\']*+(?:\'\'[^\']*+)*+)\')';
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28
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29 public static $parsedLineNumber = -1;
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30 public static $parsedFilename;
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31
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32 private static $exceptionOnInvalidType = false;
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33 private static $objectSupport = false;
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34 private static $objectForMap = false;
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35 private static $constantSupport = false;
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36
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37 /**
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38 * @param int $flags
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39 * @param int|null $parsedLineNumber
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40 * @param string|null $parsedFilename
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41 */
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42 public static function initialize($flags, $parsedLineNumber = null, $parsedFilename = null)
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43 {
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44 self::$exceptionOnInvalidType = (bool) (Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE & $flags);
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45 self::$objectSupport = (bool) (Yaml::PARSE_OBJECT & $flags);
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46 self::$objectForMap = (bool) (Yaml::PARSE_OBJECT_FOR_MAP & $flags);
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47 self::$constantSupport = (bool) (Yaml::PARSE_CONSTANT & $flags);
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48 self::$parsedFilename = $parsedFilename;
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49
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50 if (null !== $parsedLineNumber) {
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51 self::$parsedLineNumber = $parsedLineNumber;
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52 }
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53 }
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54
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55 /**
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56 * Converts a YAML string to a PHP value.
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57 *
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58 * @param string $value A YAML string
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59 * @param int $flags A bit field of PARSE_* constants to customize the YAML parser behavior
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60 * @param array $references Mapping of variable names to values
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61 *
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62 * @return mixed A PHP value
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63 *
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64 * @throws ParseException
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65 */
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66 public static function parse($value, $flags = 0, $references = [])
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67 {
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68 if (\is_bool($flags)) {
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69 @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 Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
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70
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71 if ($flags) {
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72 $flags = Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE;
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73 } else {
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74 $flags = 0;
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75 }
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76 }
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77
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78 if (\func_num_args() >= 3 && !\is_array($references)) {
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79 @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 Yaml::PARSE_OBJECT flag instead.', E_USER_DEPRECATED);
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80
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81 if ($references) {
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82 $flags |= Yaml::PARSE_OBJECT;
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83 }
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84
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85 if (\func_num_args() >= 4) {
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86 @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);
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87
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88 if (func_get_arg(3)) {
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89 $flags |= Yaml::PARSE_OBJECT_FOR_MAP;
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90 }
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91 }
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92
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93 if (\func_num_args() >= 5) {
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94 $references = func_get_arg(4);
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95 } else {
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96 $references = [];
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97 }
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98 }
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99
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100 self::initialize($flags);
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101
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102 $value = trim($value);
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103
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104 if ('' === $value) {
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105 return '';
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106 }
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107
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108 if (2 /* MB_OVERLOAD_STRING */ & (int) ini_get('mbstring.func_overload')) {
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109 $mbEncoding = mb_internal_encoding();
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110 mb_internal_encoding('ASCII');
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111 }
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112
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113 try {
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114 $i = 0;
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115 $tag = self::parseTag($value, $i, $flags);
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116 switch ($value[$i]) {
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117 case '[':
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118 $result = self::parseSequence($value, $flags, $i, $references);
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119 ++$i;
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120 break;
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121 case '{':
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122 $result = self::parseMapping($value, $flags, $i, $references);
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123 ++$i;
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124 break;
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125 default:
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126 $result = self::parseScalar($value, $flags, null, $i, null === $tag, $references);
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127 }
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128
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129 if (null !== $tag) {
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130 return new TaggedValue($tag, $result);
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131 }
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132
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133 // some comments are allowed at the end
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134 if (preg_replace('/\s+#.*$/A', '', substr($value, $i))) {
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135 throw new ParseException(sprintf('Unexpected characters near "%s".', substr($value, $i)), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
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136 }
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137
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138 return $result;
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139 } finally {
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140 if (isset($mbEncoding)) {
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141 mb_internal_encoding($mbEncoding);
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142 }
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143 }
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144 }
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145
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146 /**
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147 * Dumps a given PHP variable to a YAML string.
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148 *
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149 * @param mixed $value The PHP variable to convert
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150 * @param int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
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151 *
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152 * @return string The YAML string representing the PHP value
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153 *
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154 * @throws DumpException When trying to dump PHP resource
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155 */
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156 public static function dump($value, $flags = 0)
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157 {
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158 if (\is_bool($flags)) {
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159 @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 Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
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160
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161 if ($flags) {
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162 $flags = Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE;
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163 } else {
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164 $flags = 0;
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165 }
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166 }
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167
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168 if (\func_num_args() >= 3) {
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169 @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 Yaml::DUMP_OBJECT flag instead.', E_USER_DEPRECATED);
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170
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171 if (func_get_arg(2)) {
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172 $flags |= Yaml::DUMP_OBJECT;
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173 }
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174 }
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175
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176 switch (true) {
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177 case \is_resource($value):
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178 if (Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE & $flags) {
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179 throw new DumpException(sprintf('Unable to dump PHP resources in a YAML file ("%s").', get_resource_type($value)));
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180 }
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181
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182 return 'null';
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183 case $value instanceof \DateTimeInterface:
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184 return $value->format('c');
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185 case \is_object($value):
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186 if ($value instanceof TaggedValue) {
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187 return '!'.$value->getTag().' '.self::dump($value->getValue(), $flags);
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188 }
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189
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190 if (Yaml::DUMP_OBJECT & $flags) {
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191 return '!php/object '.self::dump(serialize($value));
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192 }
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193
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194 if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($value instanceof \stdClass || $value instanceof \ArrayObject)) {
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195 return self::dumpArray($value, $flags & ~Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE);
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196 }
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197
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198 if (Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE & $flags) {
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199 throw new DumpException('Object support when dumping a YAML file has been disabled.');
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200 }
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201
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202 return 'null';
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203 case \is_array($value):
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204 return self::dumpArray($value, $flags);
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205 case null === $value:
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206 return 'null';
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207 case true === $value:
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208 return 'true';
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209 case false === $value:
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210 return 'false';
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211 case ctype_digit($value):
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212 return \is_string($value) ? "'$value'" : (int) $value;
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213 case is_numeric($value):
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214 $locale = setlocale(LC_NUMERIC, 0);
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215 if (false !== $locale) {
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216 setlocale(LC_NUMERIC, 'C');
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217 }
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218 if (\is_float($value)) {
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219 $repr = (string) $value;
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220 if (is_infinite($value)) {
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221 $repr = str_ireplace('INF', '.Inf', $repr);
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222 } elseif (floor($value) == $value && $repr == $value) {
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223 // Preserve float data type since storing a whole number will result in integer value.
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224 $repr = '!!float '.$repr;
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225 }
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226 } else {
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227 $repr = \is_string($value) ? "'$value'" : (string) $value;
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228 }
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229 if (false !== $locale) {
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230 setlocale(LC_NUMERIC, $locale);
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231 }
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232
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233 return $repr;
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234 case '' == $value:
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235 return "''";
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236 case self::isBinaryString($value):
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237 return '!!binary '.base64_encode($value);
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238 case Escaper::requiresDoubleQuoting($value):
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239 return Escaper::escapeWithDoubleQuotes($value);
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240 case Escaper::requiresSingleQuoting($value):
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241 case Parser::preg_match('{^[0-9]+[_0-9]*$}', $value):
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242 case Parser::preg_match(self::getHexRegex(), $value):
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243 case Parser::preg_match(self::getTimestampRegex(), $value):
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244 return Escaper::escapeWithSingleQuotes($value);
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245 default:
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246 return $value;
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247 }
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248 }
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249
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250 /**
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251 * Check if given array is hash or just normal indexed array.
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252 *
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253 * @internal
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254 *
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255 * @param array|\ArrayObject|\stdClass $value The PHP array or array-like object to check
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256 *
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257 * @return bool true if value is hash array, false otherwise
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258 */
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259 public static function isHash($value)
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260 {
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261 if ($value instanceof \stdClass || $value instanceof \ArrayObject) {
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262 return true;
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263 }
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264
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265 $expectedKey = 0;
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266
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267 foreach ($value as $key => $val) {
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268 if ($key !== $expectedKey++) {
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269 return true;
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270 }
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271 }
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272
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273 return false;
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274 }
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275
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276 /**
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277 * Dumps a PHP array to a YAML string.
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278 *
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279 * @param array $value The PHP array to dump
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280 * @param int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
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281 *
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282 * @return string The YAML string representing the PHP array
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283 */
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284 private static function dumpArray($value, $flags)
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285 {
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286 // array
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287 if (($value || Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE & $flags) && !self::isHash($value)) {
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288 $output = [];
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289 foreach ($value as $val) {
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290 $output[] = self::dump($val, $flags);
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291 }
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292
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293 return sprintf('[%s]', implode(', ', $output));
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294 }
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295
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296 // hash
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297 $output = [];
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298 foreach ($value as $key => $val) {
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299 $output[] = sprintf('%s: %s', self::dump($key, $flags), self::dump($val, $flags));
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300 }
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301
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302 return sprintf('{ %s }', implode(', ', $output));
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303 }
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304
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305 /**
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306 * Parses a YAML scalar.
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307 *
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308 * @param string $scalar
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309 * @param int $flags
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310 * @param string[] $delimiters
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311 * @param int &$i
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312 * @param bool $evaluate
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313 * @param array $references
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314 *
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315 * @return string
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316 *
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317 * @throws ParseException When malformed inline YAML string is parsed
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318 *
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319 * @internal
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320 */
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321 public static function parseScalar($scalar, $flags = 0, $delimiters = null, &$i = 0, $evaluate = true, $references = [], $legacyOmittedKeySupport = false)
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322 {
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323 if (\in_array($scalar[$i], ['"', "'"])) {
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324 // quoted scalar
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325 $output = self::parseQuotedScalar($scalar, $i);
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326
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327 if (null !== $delimiters) {
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328 $tmp = ltrim(substr($scalar, $i), ' ');
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329 if ('' === $tmp) {
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330 throw new ParseException(sprintf('Unexpected end of line, expected one of "%s".', implode('', $delimiters)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
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331 }
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332 if (!\in_array($tmp[0], $delimiters)) {
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333 throw new ParseException(sprintf('Unexpected characters (%s).', substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
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334 }
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335 }
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336 } else {
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337 // "normal" string
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338 if (!$delimiters) {
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339 $output = substr($scalar, $i);
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340 $i += \strlen($output);
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341
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342 // remove comments
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343 if (Parser::preg_match('/[ \t]+#/', $output, $match, PREG_OFFSET_CAPTURE)) {
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344 $output = substr($output, 0, $match[0][1]);
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345 }
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346 } elseif (Parser::preg_match('/^(.'.($legacyOmittedKeySupport ? '+' : '*').'?)('.implode('|', $delimiters).')/', substr($scalar, $i), $match)) {
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347 $output = $match[1];
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348 $i += \strlen($output);
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349 } else {
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350 throw new ParseException(sprintf('Malformed inline YAML string: %s.', $scalar), self::$parsedLineNumber + 1, null, self::$parsedFilename);
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351 }
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352
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353 // a non-quoted string cannot start with @ or ` (reserved) nor with a scalar indicator (| or >)
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354 if ($output && ('@' === $output[0] || '`' === $output[0] || '|' === $output[0] || '>' === $output[0])) {
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355 throw new ParseException(sprintf('The reserved indicator "%s" cannot start a plain scalar; you need to quote the scalar.', $output[0]), self::$parsedLineNumber + 1, $output, self::$parsedFilename);
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356 }
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357
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358 if ($output && '%' === $output[0]) {
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359 @trigger_error(self::getDeprecationMessage(sprintf('Not quoting the scalar "%s" starting with the "%%" indicator character is deprecated since Symfony 3.1 and will throw a ParseException in 4.0.', $output)), E_USER_DEPRECATED);
|
Chris@0
|
360 }
|
Chris@0
|
361
|
Chris@0
|
362 if ($evaluate) {
|
Chris@0
|
363 $output = self::evaluateScalar($output, $flags, $references);
|
Chris@0
|
364 }
|
Chris@0
|
365 }
|
Chris@0
|
366
|
Chris@0
|
367 return $output;
|
Chris@0
|
368 }
|
Chris@0
|
369
|
Chris@0
|
370 /**
|
Chris@0
|
371 * Parses a YAML quoted scalar.
|
Chris@0
|
372 *
|
Chris@0
|
373 * @param string $scalar
|
Chris@0
|
374 * @param int &$i
|
Chris@0
|
375 *
|
Chris@0
|
376 * @return string
|
Chris@0
|
377 *
|
Chris@0
|
378 * @throws ParseException When malformed inline YAML string is parsed
|
Chris@0
|
379 */
|
Chris@0
|
380 private static function parseQuotedScalar($scalar, &$i)
|
Chris@0
|
381 {
|
Chris@0
|
382 if (!Parser::preg_match('/'.self::REGEX_QUOTED_STRING.'/Au', substr($scalar, $i), $match)) {
|
Chris@14
|
383 throw new ParseException(sprintf('Malformed inline YAML string: %s.', substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
Chris@0
|
384 }
|
Chris@0
|
385
|
Chris@17
|
386 $output = substr($match[0], 1, \strlen($match[0]) - 2);
|
Chris@0
|
387
|
Chris@0
|
388 $unescaper = new Unescaper();
|
Chris@0
|
389 if ('"' == $scalar[$i]) {
|
Chris@0
|
390 $output = $unescaper->unescapeDoubleQuotedString($output);
|
Chris@0
|
391 } else {
|
Chris@0
|
392 $output = $unescaper->unescapeSingleQuotedString($output);
|
Chris@0
|
393 }
|
Chris@0
|
394
|
Chris@17
|
395 $i += \strlen($match[0]);
|
Chris@0
|
396
|
Chris@0
|
397 return $output;
|
Chris@0
|
398 }
|
Chris@0
|
399
|
Chris@0
|
400 /**
|
Chris@0
|
401 * Parses a YAML sequence.
|
Chris@0
|
402 *
|
Chris@0
|
403 * @param string $sequence
|
Chris@0
|
404 * @param int $flags
|
Chris@0
|
405 * @param int &$i
|
Chris@0
|
406 * @param array $references
|
Chris@0
|
407 *
|
Chris@0
|
408 * @return array
|
Chris@0
|
409 *
|
Chris@0
|
410 * @throws ParseException When malformed inline YAML string is parsed
|
Chris@0
|
411 */
|
Chris@17
|
412 private static function parseSequence($sequence, $flags, &$i = 0, $references = [])
|
Chris@0
|
413 {
|
Chris@17
|
414 $output = [];
|
Chris@17
|
415 $len = \strlen($sequence);
|
Chris@0
|
416 ++$i;
|
Chris@0
|
417
|
Chris@0
|
418 // [foo, bar, ...]
|
Chris@0
|
419 while ($i < $len) {
|
Chris@14
|
420 if (']' === $sequence[$i]) {
|
Chris@14
|
421 return $output;
|
Chris@14
|
422 }
|
Chris@14
|
423 if (',' === $sequence[$i] || ' ' === $sequence[$i]) {
|
Chris@14
|
424 ++$i;
|
Chris@14
|
425
|
Chris@14
|
426 continue;
|
Chris@14
|
427 }
|
Chris@14
|
428
|
Chris@14
|
429 $tag = self::parseTag($sequence, $i, $flags);
|
Chris@0
|
430 switch ($sequence[$i]) {
|
Chris@0
|
431 case '[':
|
Chris@0
|
432 // nested sequence
|
Chris@14
|
433 $value = self::parseSequence($sequence, $flags, $i, $references);
|
Chris@0
|
434 break;
|
Chris@0
|
435 case '{':
|
Chris@0
|
436 // nested mapping
|
Chris@14
|
437 $value = self::parseMapping($sequence, $flags, $i, $references);
|
Chris@0
|
438 break;
|
Chris@0
|
439 default:
|
Chris@17
|
440 $isQuoted = \in_array($sequence[$i], ['"', "'"]);
|
Chris@17
|
441 $value = self::parseScalar($sequence, $flags, [',', ']'], $i, null === $tag, $references);
|
Chris@0
|
442
|
Chris@0
|
443 // the value can be an array if a reference has been resolved to an array var
|
Chris@17
|
444 if (\is_string($value) && !$isQuoted && false !== strpos($value, ': ')) {
|
Chris@0
|
445 // embedded mapping?
|
Chris@0
|
446 try {
|
Chris@0
|
447 $pos = 0;
|
Chris@0
|
448 $value = self::parseMapping('{'.$value.'}', $flags, $pos, $references);
|
Chris@0
|
449 } catch (\InvalidArgumentException $e) {
|
Chris@0
|
450 // no, it's not
|
Chris@0
|
451 }
|
Chris@0
|
452 }
|
Chris@0
|
453
|
Chris@0
|
454 --$i;
|
Chris@0
|
455 }
|
Chris@0
|
456
|
Chris@14
|
457 if (null !== $tag) {
|
Chris@14
|
458 $value = new TaggedValue($tag, $value);
|
Chris@14
|
459 }
|
Chris@14
|
460
|
Chris@14
|
461 $output[] = $value;
|
Chris@14
|
462
|
Chris@0
|
463 ++$i;
|
Chris@0
|
464 }
|
Chris@0
|
465
|
Chris@14
|
466 throw new ParseException(sprintf('Malformed inline YAML string: %s.', $sequence), self::$parsedLineNumber + 1, null, self::$parsedFilename);
|
Chris@0
|
467 }
|
Chris@0
|
468
|
Chris@0
|
469 /**
|
Chris@0
|
470 * Parses a YAML mapping.
|
Chris@0
|
471 *
|
Chris@0
|
472 * @param string $mapping
|
Chris@0
|
473 * @param int $flags
|
Chris@0
|
474 * @param int &$i
|
Chris@0
|
475 * @param array $references
|
Chris@0
|
476 *
|
Chris@0
|
477 * @return array|\stdClass
|
Chris@0
|
478 *
|
Chris@0
|
479 * @throws ParseException When malformed inline YAML string is parsed
|
Chris@0
|
480 */
|
Chris@17
|
481 private static function parseMapping($mapping, $flags, &$i = 0, $references = [])
|
Chris@0
|
482 {
|
Chris@17
|
483 $output = [];
|
Chris@17
|
484 $len = \strlen($mapping);
|
Chris@0
|
485 ++$i;
|
Chris@14
|
486 $allowOverwrite = false;
|
Chris@0
|
487
|
Chris@0
|
488 // {foo: bar, bar:foo, ...}
|
Chris@0
|
489 while ($i < $len) {
|
Chris@0
|
490 switch ($mapping[$i]) {
|
Chris@0
|
491 case ' ':
|
Chris@0
|
492 case ',':
|
Chris@0
|
493 ++$i;
|
Chris@0
|
494 continue 2;
|
Chris@0
|
495 case '}':
|
Chris@0
|
496 if (self::$objectForMap) {
|
Chris@0
|
497 return (object) $output;
|
Chris@0
|
498 }
|
Chris@0
|
499
|
Chris@0
|
500 return $output;
|
Chris@0
|
501 }
|
Chris@0
|
502
|
Chris@0
|
503 // key
|
Chris@17
|
504 $isKeyQuoted = \in_array($mapping[$i], ['"', "'"], true);
|
Chris@17
|
505 $key = self::parseScalar($mapping, $flags, [':', ' '], $i, false, [], true);
|
Chris@0
|
506
|
Chris@0
|
507 if (':' !== $key && false === $i = strpos($mapping, ':', $i)) {
|
Chris@0
|
508 break;
|
Chris@0
|
509 }
|
Chris@0
|
510
|
Chris@14
|
511 if (':' === $key) {
|
Chris@14
|
512 @trigger_error(self::getDeprecationMessage('Omitting the key of a mapping is deprecated and will throw a ParseException in 4.0.'), E_USER_DEPRECATED);
|
Chris@0
|
513 }
|
Chris@0
|
514
|
Chris@14
|
515 if (!$isKeyQuoted) {
|
Chris@14
|
516 $evaluatedKey = self::evaluateScalar($key, $flags, $references);
|
Chris@14
|
517
|
Chris@17
|
518 if ('' !== $key && $evaluatedKey !== $key && !\is_string($evaluatedKey) && !\is_int($evaluatedKey)) {
|
Chris@14
|
519 @trigger_error(self::getDeprecationMessage('Implicit casting of incompatible mapping keys to strings is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead.'), E_USER_DEPRECATED);
|
Chris@14
|
520 }
|
Chris@14
|
521 }
|
Chris@14
|
522
|
Chris@17
|
523 if (':' !== $key && !$isKeyQuoted && (!isset($mapping[$i + 1]) || !\in_array($mapping[$i + 1], [' ', ',', '[', ']', '{', '}'], true))) {
|
Chris@14
|
524 @trigger_error(self::getDeprecationMessage('Using a colon after an unquoted mapping key that is not followed by an indication character (i.e. " ", ",", "[", "]", "{", "}") is deprecated since Symfony 3.2 and will throw a ParseException in 4.0.'), E_USER_DEPRECATED);
|
Chris@14
|
525 }
|
Chris@14
|
526
|
Chris@14
|
527 if ('<<' === $key) {
|
Chris@14
|
528 $allowOverwrite = true;
|
Chris@14
|
529 }
|
Chris@0
|
530
|
Chris@0
|
531 while ($i < $len) {
|
Chris@14
|
532 if (':' === $mapping[$i] || ' ' === $mapping[$i]) {
|
Chris@14
|
533 ++$i;
|
Chris@14
|
534
|
Chris@14
|
535 continue;
|
Chris@14
|
536 }
|
Chris@14
|
537
|
Chris@14
|
538 $tag = self::parseTag($mapping, $i, $flags);
|
Chris@0
|
539 switch ($mapping[$i]) {
|
Chris@0
|
540 case '[':
|
Chris@0
|
541 // nested sequence
|
Chris@0
|
542 $value = self::parseSequence($mapping, $flags, $i, $references);
|
Chris@0
|
543 // Spec: Keys MUST be unique; first one wins.
|
Chris@0
|
544 // Parser cannot abort this mapping earlier, since lines
|
Chris@0
|
545 // are processed sequentially.
|
Chris@14
|
546 // But overwriting is allowed when a merge node is used in current block.
|
Chris@14
|
547 if ('<<' === $key) {
|
Chris@14
|
548 foreach ($value as $parsedValue) {
|
Chris@14
|
549 $output += $parsedValue;
|
Chris@14
|
550 }
|
Chris@14
|
551 } elseif ($allowOverwrite || !isset($output[$key])) {
|
Chris@14
|
552 if (null !== $tag) {
|
Chris@14
|
553 $output[$key] = new TaggedValue($tag, $value);
|
Chris@14
|
554 } else {
|
Chris@14
|
555 $output[$key] = $value;
|
Chris@14
|
556 }
|
Chris@14
|
557 } elseif (isset($output[$key])) {
|
Chris@14
|
558 @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
|
Chris@0
|
559 }
|
Chris@0
|
560 break;
|
Chris@0
|
561 case '{':
|
Chris@0
|
562 // nested mapping
|
Chris@0
|
563 $value = self::parseMapping($mapping, $flags, $i, $references);
|
Chris@0
|
564 // Spec: Keys MUST be unique; first one wins.
|
Chris@0
|
565 // Parser cannot abort this mapping earlier, since lines
|
Chris@0
|
566 // are processed sequentially.
|
Chris@14
|
567 // But overwriting is allowed when a merge node is used in current block.
|
Chris@14
|
568 if ('<<' === $key) {
|
Chris@14
|
569 $output += $value;
|
Chris@14
|
570 } elseif ($allowOverwrite || !isset($output[$key])) {
|
Chris@14
|
571 if (null !== $tag) {
|
Chris@14
|
572 $output[$key] = new TaggedValue($tag, $value);
|
Chris@14
|
573 } else {
|
Chris@14
|
574 $output[$key] = $value;
|
Chris@14
|
575 }
|
Chris@14
|
576 } elseif (isset($output[$key])) {
|
Chris@14
|
577 @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
|
Chris@0
|
578 }
|
Chris@0
|
579 break;
|
Chris@0
|
580 default:
|
Chris@17
|
581 $value = self::parseScalar($mapping, $flags, [',', '}'], $i, null === $tag, $references);
|
Chris@0
|
582 // Spec: Keys MUST be unique; first one wins.
|
Chris@0
|
583 // Parser cannot abort this mapping earlier, since lines
|
Chris@0
|
584 // are processed sequentially.
|
Chris@14
|
585 // But overwriting is allowed when a merge node is used in current block.
|
Chris@14
|
586 if ('<<' === $key) {
|
Chris@14
|
587 $output += $value;
|
Chris@14
|
588 } elseif ($allowOverwrite || !isset($output[$key])) {
|
Chris@14
|
589 if (null !== $tag) {
|
Chris@14
|
590 $output[$key] = new TaggedValue($tag, $value);
|
Chris@14
|
591 } else {
|
Chris@14
|
592 $output[$key] = $value;
|
Chris@14
|
593 }
|
Chris@14
|
594 } elseif (isset($output[$key])) {
|
Chris@14
|
595 @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
|
Chris@0
|
596 }
|
Chris@0
|
597 --$i;
|
Chris@0
|
598 }
|
Chris@0
|
599 ++$i;
|
Chris@0
|
600
|
Chris@14
|
601 continue 2;
|
Chris@0
|
602 }
|
Chris@0
|
603 }
|
Chris@0
|
604
|
Chris@14
|
605 throw new ParseException(sprintf('Malformed inline YAML string: %s.', $mapping), self::$parsedLineNumber + 1, null, self::$parsedFilename);
|
Chris@0
|
606 }
|
Chris@0
|
607
|
Chris@0
|
608 /**
|
Chris@0
|
609 * Evaluates scalars and replaces magic values.
|
Chris@0
|
610 *
|
Chris@0
|
611 * @param string $scalar
|
Chris@0
|
612 * @param int $flags
|
Chris@0
|
613 * @param array $references
|
Chris@0
|
614 *
|
Chris@0
|
615 * @return mixed The evaluated YAML string
|
Chris@0
|
616 *
|
Chris@0
|
617 * @throws ParseException when object parsing support was disabled and the parser detected a PHP object or when a reference could not be resolved
|
Chris@0
|
618 */
|
Chris@17
|
619 private static function evaluateScalar($scalar, $flags, $references = [])
|
Chris@0
|
620 {
|
Chris@0
|
621 $scalar = trim($scalar);
|
Chris@0
|
622 $scalarLower = strtolower($scalar);
|
Chris@0
|
623
|
Chris@0
|
624 if (0 === strpos($scalar, '*')) {
|
Chris@0
|
625 if (false !== $pos = strpos($scalar, '#')) {
|
Chris@0
|
626 $value = substr($scalar, 1, $pos - 2);
|
Chris@0
|
627 } else {
|
Chris@0
|
628 $value = substr($scalar, 1);
|
Chris@0
|
629 }
|
Chris@0
|
630
|
Chris@0
|
631 // an unquoted *
|
Chris@0
|
632 if (false === $value || '' === $value) {
|
Chris@14
|
633 throw new ParseException('A reference must contain at least one character.', self::$parsedLineNumber + 1, $value, self::$parsedFilename);
|
Chris@0
|
634 }
|
Chris@0
|
635
|
Chris@18
|
636 if (!\array_key_exists($value, $references)) {
|
Chris@14
|
637 throw new ParseException(sprintf('Reference "%s" does not exist.', $value), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
|
Chris@0
|
638 }
|
Chris@0
|
639
|
Chris@0
|
640 return $references[$value];
|
Chris@0
|
641 }
|
Chris@0
|
642
|
Chris@0
|
643 switch (true) {
|
Chris@0
|
644 case 'null' === $scalarLower:
|
Chris@0
|
645 case '' === $scalar:
|
Chris@0
|
646 case '~' === $scalar:
|
Chris@0
|
647 return;
|
Chris@0
|
648 case 'true' === $scalarLower:
|
Chris@0
|
649 return true;
|
Chris@0
|
650 case 'false' === $scalarLower:
|
Chris@0
|
651 return false;
|
Chris@14
|
652 case '!' === $scalar[0]:
|
Chris@0
|
653 switch (true) {
|
Chris@0
|
654 case 0 === strpos($scalar, '!str'):
|
Chris@14
|
655 @trigger_error(self::getDeprecationMessage('Support for the !str tag is deprecated since Symfony 3.4. Use the !!str tag instead.'), E_USER_DEPRECATED);
|
Chris@14
|
656
|
Chris@0
|
657 return (string) substr($scalar, 5);
|
Chris@14
|
658 case 0 === strpos($scalar, '!!str '):
|
Chris@14
|
659 return (string) substr($scalar, 6);
|
Chris@0
|
660 case 0 === strpos($scalar, '! '):
|
Chris@14
|
661 @trigger_error(self::getDeprecationMessage('Using the non-specific tag "!" is deprecated since Symfony 3.4 as its behavior will change in 4.0. It will force non-evaluating your values in 4.0. Use plain integers or !!float instead.'), E_USER_DEPRECATED);
|
Chris@14
|
662
|
Chris@0
|
663 return (int) self::parseScalar(substr($scalar, 2), $flags);
|
Chris@0
|
664 case 0 === strpos($scalar, '!php/object:'):
|
Chris@0
|
665 if (self::$objectSupport) {
|
Chris@14
|
666 @trigger_error(self::getDeprecationMessage('The !php/object: tag to indicate dumped PHP objects is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/object (without the colon) tag instead.'), E_USER_DEPRECATED);
|
Chris@14
|
667
|
Chris@0
|
668 return unserialize(substr($scalar, 12));
|
Chris@0
|
669 }
|
Chris@0
|
670
|
Chris@0
|
671 if (self::$exceptionOnInvalidType) {
|
Chris@14
|
672 throw new ParseException('Object support when parsing a YAML file has been disabled.', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
Chris@0
|
673 }
|
Chris@0
|
674
|
Chris@0
|
675 return;
|
Chris@0
|
676 case 0 === strpos($scalar, '!!php/object:'):
|
Chris@0
|
677 if (self::$objectSupport) {
|
Chris@14
|
678 @trigger_error(self::getDeprecationMessage('The !!php/object: tag to indicate dumped PHP objects is deprecated since Symfony 3.1 and will be removed in 4.0. Use the !php/object (without the colon) tag instead.'), E_USER_DEPRECATED);
|
Chris@0
|
679
|
Chris@0
|
680 return unserialize(substr($scalar, 13));
|
Chris@0
|
681 }
|
Chris@0
|
682
|
Chris@0
|
683 if (self::$exceptionOnInvalidType) {
|
Chris@14
|
684 throw new ParseException('Object support when parsing a YAML file has been disabled.', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
Chris@14
|
685 }
|
Chris@14
|
686
|
Chris@14
|
687 return;
|
Chris@14
|
688 case 0 === strpos($scalar, '!php/object'):
|
Chris@14
|
689 if (self::$objectSupport) {
|
Chris@14
|
690 return unserialize(self::parseScalar(substr($scalar, 12)));
|
Chris@14
|
691 }
|
Chris@14
|
692
|
Chris@14
|
693 if (self::$exceptionOnInvalidType) {
|
Chris@14
|
694 throw new ParseException('Object support when parsing a YAML file has been disabled.', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
Chris@0
|
695 }
|
Chris@0
|
696
|
Chris@0
|
697 return;
|
Chris@0
|
698 case 0 === strpos($scalar, '!php/const:'):
|
Chris@0
|
699 if (self::$constantSupport) {
|
Chris@14
|
700 @trigger_error(self::getDeprecationMessage('The !php/const: tag to indicate dumped PHP constants is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead.'), E_USER_DEPRECATED);
|
Chris@14
|
701
|
Chris@17
|
702 if (\defined($const = substr($scalar, 11))) {
|
Chris@17
|
703 return \constant($const);
|
Chris@0
|
704 }
|
Chris@0
|
705
|
Chris@14
|
706 throw new ParseException(sprintf('The constant "%s" is not defined.', $const), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
Chris@0
|
707 }
|
Chris@0
|
708 if (self::$exceptionOnInvalidType) {
|
Chris@14
|
709 throw new ParseException(sprintf('The string "%s" could not be parsed as a constant. Have you forgotten to pass the "Yaml::PARSE_CONSTANT" flag to the parser?', $scalar), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
Chris@14
|
710 }
|
Chris@14
|
711
|
Chris@14
|
712 return;
|
Chris@14
|
713 case 0 === strpos($scalar, '!php/const'):
|
Chris@14
|
714 if (self::$constantSupport) {
|
Chris@14
|
715 $i = 0;
|
Chris@17
|
716 if (\defined($const = self::parseScalar(substr($scalar, 11), 0, null, $i, false))) {
|
Chris@17
|
717 return \constant($const);
|
Chris@14
|
718 }
|
Chris@14
|
719
|
Chris@14
|
720 throw new ParseException(sprintf('The constant "%s" is not defined.', $const), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
Chris@14
|
721 }
|
Chris@14
|
722 if (self::$exceptionOnInvalidType) {
|
Chris@14
|
723 throw new ParseException(sprintf('The string "%s" could not be parsed as a constant. Have you forgotten to pass the "Yaml::PARSE_CONSTANT" flag to the parser?', $scalar), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
Chris@0
|
724 }
|
Chris@0
|
725
|
Chris@0
|
726 return;
|
Chris@0
|
727 case 0 === strpos($scalar, '!!float '):
|
Chris@0
|
728 return (float) substr($scalar, 8);
|
Chris@14
|
729 case 0 === strpos($scalar, '!!binary '):
|
Chris@14
|
730 return self::evaluateBinaryScalar(substr($scalar, 9));
|
Chris@14
|
731 default:
|
Chris@14
|
732 @trigger_error(self::getDeprecationMessage(sprintf('Using the unquoted scalar value "%s" is deprecated since Symfony 3.3 and will be considered as a tagged value in 4.0. You must quote it.', $scalar)), E_USER_DEPRECATED);
|
Chris@14
|
733 }
|
Chris@14
|
734
|
Chris@14
|
735 // Optimize for returning strings.
|
Chris@14
|
736 // no break
|
Chris@14
|
737 case '+' === $scalar[0] || '-' === $scalar[0] || '.' === $scalar[0] || is_numeric($scalar[0]):
|
Chris@14
|
738 switch (true) {
|
Chris@0
|
739 case Parser::preg_match('{^[+-]?[0-9][0-9_]*$}', $scalar):
|
Chris@0
|
740 $scalar = str_replace('_', '', (string) $scalar);
|
Chris@0
|
741 // omitting the break / return as integers are handled in the next case
|
Chris@14
|
742 // no break
|
Chris@0
|
743 case ctype_digit($scalar):
|
Chris@0
|
744 $raw = $scalar;
|
Chris@0
|
745 $cast = (int) $scalar;
|
Chris@0
|
746
|
Chris@0
|
747 return '0' == $scalar[0] ? octdec($scalar) : (((string) $raw == (string) $cast) ? $cast : $raw);
|
Chris@0
|
748 case '-' === $scalar[0] && ctype_digit(substr($scalar, 1)):
|
Chris@0
|
749 $raw = $scalar;
|
Chris@0
|
750 $cast = (int) $scalar;
|
Chris@0
|
751
|
Chris@0
|
752 return '0' == $scalar[1] ? octdec($scalar) : (((string) $raw === (string) $cast) ? $cast : $raw);
|
Chris@0
|
753 case is_numeric($scalar):
|
Chris@0
|
754 case Parser::preg_match(self::getHexRegex(), $scalar):
|
Chris@0
|
755 $scalar = str_replace('_', '', $scalar);
|
Chris@0
|
756
|
Chris@0
|
757 return '0x' === $scalar[0].$scalar[1] ? hexdec($scalar) : (float) $scalar;
|
Chris@0
|
758 case '.inf' === $scalarLower:
|
Chris@0
|
759 case '.nan' === $scalarLower:
|
Chris@0
|
760 return -log(0);
|
Chris@0
|
761 case '-.inf' === $scalarLower:
|
Chris@0
|
762 return log(0);
|
Chris@0
|
763 case Parser::preg_match('/^(-|\+)?[0-9][0-9,]*(\.[0-9_]+)?$/', $scalar):
|
Chris@0
|
764 case Parser::preg_match('/^(-|\+)?[0-9][0-9_]*(\.[0-9_]+)?$/', $scalar):
|
Chris@0
|
765 if (false !== strpos($scalar, ',')) {
|
Chris@14
|
766 @trigger_error(self::getDeprecationMessage('Using the comma as a group separator for floats is deprecated since Symfony 3.2 and will be removed in 4.0.'), E_USER_DEPRECATED);
|
Chris@0
|
767 }
|
Chris@0
|
768
|
Chris@17
|
769 return (float) str_replace([',', '_'], '', $scalar);
|
Chris@0
|
770 case Parser::preg_match(self::getTimestampRegex(), $scalar):
|
Chris@0
|
771 if (Yaml::PARSE_DATETIME & $flags) {
|
Chris@0
|
772 // When no timezone is provided in the parsed date, YAML spec says we must assume UTC.
|
Chris@0
|
773 return new \DateTime($scalar, new \DateTimeZone('UTC'));
|
Chris@0
|
774 }
|
Chris@0
|
775
|
Chris@0
|
776 $timeZone = date_default_timezone_get();
|
Chris@0
|
777 date_default_timezone_set('UTC');
|
Chris@0
|
778 $time = strtotime($scalar);
|
Chris@0
|
779 date_default_timezone_set($timeZone);
|
Chris@0
|
780
|
Chris@0
|
781 return $time;
|
Chris@0
|
782 }
|
Chris@0
|
783 }
|
Chris@14
|
784
|
Chris@14
|
785 return (string) $scalar;
|
Chris@14
|
786 }
|
Chris@14
|
787
|
Chris@14
|
788 /**
|
Chris@14
|
789 * @param string $value
|
Chris@14
|
790 * @param int &$i
|
Chris@14
|
791 * @param int $flags
|
Chris@14
|
792 *
|
Chris@17
|
793 * @return string|null
|
Chris@14
|
794 */
|
Chris@14
|
795 private static function parseTag($value, &$i, $flags)
|
Chris@14
|
796 {
|
Chris@14
|
797 if ('!' !== $value[$i]) {
|
Chris@14
|
798 return;
|
Chris@14
|
799 }
|
Chris@14
|
800
|
Chris@14
|
801 $tagLength = strcspn($value, " \t\n", $i + 1);
|
Chris@14
|
802 $tag = substr($value, $i + 1, $tagLength);
|
Chris@14
|
803
|
Chris@14
|
804 $nextOffset = $i + $tagLength + 1;
|
Chris@14
|
805 $nextOffset += strspn($value, ' ', $nextOffset);
|
Chris@14
|
806
|
Chris@14
|
807 // Is followed by a scalar
|
Chris@17
|
808 if ((!isset($value[$nextOffset]) || !\in_array($value[$nextOffset], ['[', '{'], true)) && 'tagged' !== $tag) {
|
Chris@14
|
809 // Manage non-whitelisted scalars in {@link self::evaluateScalar()}
|
Chris@14
|
810 return;
|
Chris@14
|
811 }
|
Chris@14
|
812
|
Chris@14
|
813 // Built-in tags
|
Chris@14
|
814 if ($tag && '!' === $tag[0]) {
|
Chris@14
|
815 throw new ParseException(sprintf('The built-in tag "!%s" is not implemented.', $tag), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
|
Chris@14
|
816 }
|
Chris@14
|
817
|
Chris@14
|
818 if (Yaml::PARSE_CUSTOM_TAGS & $flags) {
|
Chris@14
|
819 $i = $nextOffset;
|
Chris@14
|
820
|
Chris@14
|
821 return $tag;
|
Chris@14
|
822 }
|
Chris@14
|
823
|
Chris@14
|
824 throw new ParseException(sprintf('Tags support is not enabled. Enable the `Yaml::PARSE_CUSTOM_TAGS` flag to use "!%s".', $tag), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
|
Chris@0
|
825 }
|
Chris@0
|
826
|
Chris@0
|
827 /**
|
Chris@0
|
828 * @param string $scalar
|
Chris@0
|
829 *
|
Chris@0
|
830 * @return string
|
Chris@0
|
831 *
|
Chris@0
|
832 * @internal
|
Chris@0
|
833 */
|
Chris@0
|
834 public static function evaluateBinaryScalar($scalar)
|
Chris@0
|
835 {
|
Chris@0
|
836 $parsedBinaryData = self::parseScalar(preg_replace('/\s/', '', $scalar));
|
Chris@0
|
837
|
Chris@17
|
838 if (0 !== (\strlen($parsedBinaryData) % 4)) {
|
Chris@17
|
839 throw new ParseException(sprintf('The normalized base64 encoded data (data without whitespace characters) length must be a multiple of four (%d bytes given).', \strlen($parsedBinaryData)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
Chris@0
|
840 }
|
Chris@0
|
841
|
Chris@0
|
842 if (!Parser::preg_match('#^[A-Z0-9+/]+={0,2}$#i', $parsedBinaryData)) {
|
Chris@14
|
843 throw new ParseException(sprintf('The base64 encoded data (%s) contains invalid characters.', $parsedBinaryData), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
Chris@0
|
844 }
|
Chris@0
|
845
|
Chris@0
|
846 return base64_decode($parsedBinaryData, true);
|
Chris@0
|
847 }
|
Chris@0
|
848
|
Chris@0
|
849 private static function isBinaryString($value)
|
Chris@0
|
850 {
|
Chris@0
|
851 return !preg_match('//u', $value) || preg_match('/[^\x00\x07-\x0d\x1B\x20-\xff]/', $value);
|
Chris@0
|
852 }
|
Chris@0
|
853
|
Chris@0
|
854 /**
|
Chris@0
|
855 * Gets a regex that matches a YAML date.
|
Chris@0
|
856 *
|
Chris@0
|
857 * @return string The regular expression
|
Chris@0
|
858 *
|
Chris@0
|
859 * @see http://www.yaml.org/spec/1.2/spec.html#id2761573
|
Chris@0
|
860 */
|
Chris@0
|
861 private static function getTimestampRegex()
|
Chris@0
|
862 {
|
Chris@0
|
863 return <<<EOF
|
Chris@0
|
864 ~^
|
Chris@0
|
865 (?P<year>[0-9][0-9][0-9][0-9])
|
Chris@0
|
866 -(?P<month>[0-9][0-9]?)
|
Chris@0
|
867 -(?P<day>[0-9][0-9]?)
|
Chris@0
|
868 (?:(?:[Tt]|[ \t]+)
|
Chris@0
|
869 (?P<hour>[0-9][0-9]?)
|
Chris@0
|
870 :(?P<minute>[0-9][0-9])
|
Chris@0
|
871 :(?P<second>[0-9][0-9])
|
Chris@0
|
872 (?:\.(?P<fraction>[0-9]*))?
|
Chris@0
|
873 (?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
|
Chris@0
|
874 (?::(?P<tz_minute>[0-9][0-9]))?))?)?
|
Chris@0
|
875 $~x
|
Chris@0
|
876 EOF;
|
Chris@0
|
877 }
|
Chris@0
|
878
|
Chris@0
|
879 /**
|
Chris@0
|
880 * Gets a regex that matches a YAML number in hexadecimal notation.
|
Chris@0
|
881 *
|
Chris@0
|
882 * @return string
|
Chris@0
|
883 */
|
Chris@0
|
884 private static function getHexRegex()
|
Chris@0
|
885 {
|
Chris@0
|
886 return '~^0x[0-9a-f_]++$~i';
|
Chris@0
|
887 }
|
Chris@14
|
888
|
Chris@14
|
889 private static function getDeprecationMessage($message)
|
Chris@14
|
890 {
|
Chris@14
|
891 $message = rtrim($message, '.');
|
Chris@14
|
892
|
Chris@14
|
893 if (null !== self::$parsedFilename) {
|
Chris@14
|
894 $message .= ' in '.self::$parsedFilename;
|
Chris@14
|
895 }
|
Chris@14
|
896
|
Chris@14
|
897 if (-1 !== self::$parsedLineNumber) {
|
Chris@14
|
898 $message .= ' on line '.(self::$parsedLineNumber + 1);
|
Chris@14
|
899 }
|
Chris@14
|
900
|
Chris@14
|
901 return $message.'.';
|
Chris@14
|
902 }
|
Chris@0
|
903 }
|