Total Complexity | 133 |
Total Lines | 586 |
Duplicated Lines | 0 % |
Changes | 0 |
Complex classes like Inline often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Inline, and based on these observations, apply Extract Interface, too.
1 | <?php |
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22 | class Inline |
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23 | { |
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24 | const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*+(?:\\\\.[^"\\\\]*+)*+)"|\'([^\']*+(?:\'\'[^\']*+)*+)\')'; |
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25 | |||
26 | private static $exceptionOnInvalidType = false; |
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27 | private static $objectSupport = false; |
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28 | private static $objectForMap = false; |
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29 | |||
30 | /** |
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31 | * Converts a YAML string to a PHP value. |
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32 | * |
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33 | * @param string $value A YAML string |
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34 | * @param bool $exceptionOnInvalidType True if an exception must be thrown on invalid types (a PHP resource or object), false otherwise |
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35 | * @param bool $objectSupport True if object support is enabled, false otherwise |
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36 | * @param bool $objectForMap True if maps should return a stdClass instead of array() |
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37 | * @param array $references Mapping of variable names to values |
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38 | * |
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39 | * @return mixed A PHP value |
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40 | * |
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41 | * @throws ParseException |
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42 | */ |
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43 | public static function parse($value, $exceptionOnInvalidType = false, $objectSupport = false, $objectForMap = false, $references = array()) |
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44 | { |
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45 | self::$exceptionOnInvalidType = $exceptionOnInvalidType; |
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46 | self::$objectSupport = $objectSupport; |
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47 | self::$objectForMap = $objectForMap; |
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48 | |||
49 | $value = trim((string)$value); |
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50 | |||
51 | if ('' === $value) { |
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52 | return ''; |
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53 | } |
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54 | |||
55 | if (2 /* MB_OVERLOAD_STRING */ & (int) ini_get('mbstring.func_overload')) { |
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56 | $mbEncoding = mb_internal_encoding(); |
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57 | mb_internal_encoding('ASCII'); |
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58 | } |
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59 | |||
60 | $i = 0; |
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61 | switch ($value[0]) { |
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62 | case '[': |
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63 | $result = self::parseSequence($value, $i, $references); |
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64 | ++$i; |
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65 | break; |
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66 | case '{': |
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67 | $result = self::parseMapping($value, $i, $references); |
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68 | ++$i; |
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69 | break; |
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70 | default: |
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71 | $result = self::parseScalar($value, null, array('"', "'"), $i, true, $references); |
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72 | } |
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73 | |||
74 | // some comments are allowed at the end |
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75 | if (preg_replace('/\s+#.*$/A', '', substr($value, $i))) { |
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76 | throw new ParseException(sprintf('Unexpected characters near "%s".', substr($value, $i))); |
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77 | } |
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78 | |||
79 | if (isset($mbEncoding)) { |
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80 | mb_internal_encoding($mbEncoding); |
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81 | } |
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82 | |||
83 | return $result; |
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84 | } |
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85 | |||
86 | /** |
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87 | * Dumps a given PHP variable to a YAML string. |
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88 | * |
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89 | * @param mixed $value The PHP variable to convert |
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90 | * @param bool $exceptionOnInvalidType True if an exception must be thrown on invalid types (a PHP resource or object), false otherwise |
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91 | * @param bool $objectSupport True if object support is enabled, false otherwise |
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92 | * |
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93 | * @return string The YAML string representing the PHP value |
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94 | * |
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95 | * @throws DumpException When trying to dump PHP resource |
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96 | */ |
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97 | public static function dump($value, $exceptionOnInvalidType = false, $objectSupport = false) |
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98 | { |
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99 | switch (true) { |
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100 | case \is_resource($value): |
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101 | if ($exceptionOnInvalidType) { |
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102 | throw new DumpException(sprintf('Unable to dump PHP resources in a YAML file ("%s").', get_resource_type($value))); |
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103 | } |
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104 | |||
105 | return 'null'; |
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106 | case \is_object($value): |
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107 | if ($objectSupport) { |
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108 | return '!php/object:'.serialize($value); |
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109 | } |
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110 | |||
111 | if ($exceptionOnInvalidType) { |
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112 | throw new DumpException('Object support when dumping a YAML file has been disabled.'); |
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113 | } |
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114 | |||
115 | return 'null'; |
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116 | case \is_array($value): |
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117 | return self::dumpArray($value, $exceptionOnInvalidType, $objectSupport); |
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118 | case null === $value: |
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119 | return 'null'; |
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120 | case true === $value: |
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121 | return 'true'; |
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122 | case false === $value: |
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123 | return 'false'; |
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124 | case ctype_digit($value): |
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125 | return \is_string($value) ? "'$value'" : (int) $value; |
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126 | case is_numeric($value): |
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127 | $locale = setlocale(LC_NUMERIC, 0); |
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128 | if (false !== $locale) { |
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129 | setlocale(LC_NUMERIC, 'C'); |
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130 | } |
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131 | if (\is_float($value)) { |
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132 | $repr = (string) $value; |
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133 | if (is_infinite($value)) { |
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134 | $repr = str_ireplace('INF', '.Inf', $repr); |
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135 | } elseif (floor($value) == $value && $repr == $value) { |
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136 | // Preserve float data type since storing a whole number will result in integer value. |
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137 | $repr = '!!float '.$repr; |
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138 | } |
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139 | } else { |
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140 | $repr = \is_string($value) ? "'$value'" : (string) $value; |
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141 | } |
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142 | if (false !== $locale) { |
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143 | setlocale(LC_NUMERIC, $locale); |
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144 | } |
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145 | |||
146 | return $repr; |
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147 | case '' == $value: |
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148 | return "''"; |
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149 | case Escaper::requiresDoubleQuoting($value): |
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150 | return Escaper::escapeWithDoubleQuotes($value); |
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151 | case Escaper::requiresSingleQuoting($value): |
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152 | case Parser::preg_match(self::getHexRegex(), $value): |
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153 | case Parser::preg_match(self::getTimestampRegex(), $value): |
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154 | return Escaper::escapeWithSingleQuotes($value); |
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155 | default: |
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156 | return $value; |
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157 | } |
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158 | } |
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159 | |||
160 | /** |
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161 | * Check if given array is hash or just normal indexed array. |
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162 | * |
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163 | * @internal |
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164 | * |
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165 | * @param array $value The PHP array to check |
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166 | * |
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167 | * @return bool true if value is hash array, false otherwise |
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168 | */ |
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169 | public static function isHash(array $value) |
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170 | { |
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171 | $expectedKey = 0; |
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172 | |||
173 | foreach ($value as $key => $val) { |
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174 | if ($key !== $expectedKey++) { |
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175 | return true; |
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176 | } |
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177 | } |
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178 | |||
179 | return false; |
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180 | } |
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181 | |||
182 | /** |
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183 | * Dumps a PHP array to a YAML string. |
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184 | * |
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185 | * @param array $value The PHP array to dump |
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186 | * @param bool $exceptionOnInvalidType True if an exception must be thrown on invalid types (a PHP resource or object), false otherwise |
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187 | * @param bool $objectSupport True if object support is enabled, false otherwise |
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188 | * |
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189 | * @return string The YAML string representing the PHP array |
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190 | */ |
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191 | private static function dumpArray($value, $exceptionOnInvalidType, $objectSupport) |
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192 | { |
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193 | // array |
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194 | if ($value && !self::isHash($value)) { |
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195 | $output = array(); |
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196 | foreach ($value as $val) { |
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197 | $output[] = self::dump($val, $exceptionOnInvalidType, $objectSupport); |
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198 | } |
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199 | |||
200 | return sprintf('[%s]', implode(', ', $output)); |
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201 | } |
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202 | |||
203 | // hash |
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204 | $output = array(); |
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205 | foreach ($value as $key => $val) { |
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206 | $output[] = sprintf('%s: %s', self::dump($key, $exceptionOnInvalidType, $objectSupport), self::dump($val, $exceptionOnInvalidType, $objectSupport)); |
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207 | } |
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208 | |||
209 | return sprintf('{ %s }', implode(', ', $output)); |
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210 | } |
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211 | |||
212 | /** |
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213 | * Parses a YAML scalar. |
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214 | * |
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215 | * @param string $scalar |
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216 | * @param string[] $delimiters |
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217 | * @param string[] $stringDelimiters |
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218 | * @param int &$i |
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219 | * @param bool $evaluate |
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220 | * @param array $references |
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221 | * |
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222 | * @return string |
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223 | * |
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224 | * @throws ParseException When malformed inline YAML string is parsed |
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225 | * |
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226 | * @internal |
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227 | */ |
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228 | public static function parseScalar($scalar, $delimiters = null, $stringDelimiters = array('"', "'"), &$i = 0, $evaluate = true, $references = array()) |
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229 | { |
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230 | if (\in_array($scalar[$i], $stringDelimiters)) { |
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231 | // quoted scalar |
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232 | $output = self::parseQuotedScalar($scalar, $i); |
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233 | |||
234 | if (null !== $delimiters) { |
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235 | $tmp = ltrim(substr($scalar, $i), ' '); |
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236 | if ('' === $tmp) { |
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237 | throw new ParseException(sprintf('Unexpected end of line, expected one of "%s".', implode('', $delimiters))); |
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238 | } |
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239 | if (!\in_array($tmp[0], $delimiters)) { |
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240 | throw new ParseException(sprintf('Unexpected characters (%s).', substr($scalar, $i))); |
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241 | } |
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242 | } |
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243 | } else { |
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244 | // "normal" string |
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245 | if (!$delimiters) { |
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246 | $output = substr($scalar, $i); |
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247 | $i += \strlen($output); |
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248 | |||
249 | // remove comments |
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250 | if (Parser::preg_match('/[ \t]+#/', $output, $match, PREG_OFFSET_CAPTURE)) { |
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251 | $output = substr($output, 0, $match[0][1]); |
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252 | } |
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253 | } elseif (Parser::preg_match('/^(.+?)('.implode('|', $delimiters).')/', substr($scalar, $i), $match)) { |
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254 | $output = $match[1]; |
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255 | $i += \strlen($output); |
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256 | } else { |
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257 | throw new ParseException(sprintf('Malformed inline YAML string: %s.', $scalar)); |
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258 | } |
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259 | |||
260 | // a non-quoted string cannot start with @ or ` (reserved) nor with a scalar indicator (| or >) |
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261 | if ($output && ('@' === $output[0] || '`' === $output[0] || '|' === $output[0] || '>' === $output[0])) { |
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262 | @trigger_error(sprintf('Not quoting the scalar "%s" starting with "%s" is deprecated since Symfony 2.8 and will throw a ParseException in 3.0.', $output, $output[0]), E_USER_DEPRECATED); |
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263 | |||
264 | // to be thrown in 3.0 |
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265 | // throw new ParseException(sprintf('The reserved indicator "%s" cannot start a plain scalar; you need to quote the scalar.', $output[0])); |
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266 | } |
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267 | |||
268 | if ($evaluate) { |
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269 | $output = self::evaluateScalar($output, $references); |
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270 | } |
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271 | } |
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272 | |||
273 | return $output; |
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274 | } |
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275 | |||
276 | /** |
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277 | * Parses a YAML quoted scalar. |
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278 | * |
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279 | * @param string $scalar |
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280 | * @param int &$i |
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281 | * |
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282 | * @return string |
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283 | * |
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284 | * @throws ParseException When malformed inline YAML string is parsed |
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285 | */ |
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286 | private static function parseQuotedScalar($scalar, &$i) |
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287 | { |
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288 | if (!Parser::preg_match('/'.self::REGEX_QUOTED_STRING.'/Au', substr($scalar, $i), $match)) { |
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289 | throw new ParseException(sprintf('Malformed inline YAML string: %s.', substr($scalar, $i))); |
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290 | } |
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291 | |||
292 | $output = substr($match[0], 1, \strlen($match[0]) - 2); |
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293 | |||
294 | $unescaper = new Unescaper(); |
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295 | if ('"' == $scalar[$i]) { |
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296 | $output = $unescaper->unescapeDoubleQuotedString($output); |
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297 | } else { |
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298 | $output = $unescaper->unescapeSingleQuotedString($output); |
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299 | } |
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300 | |||
301 | $i += \strlen($match[0]); |
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302 | |||
303 | return $output; |
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304 | } |
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305 | |||
306 | /** |
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307 | * Parses a YAML sequence. |
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308 | * |
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309 | * @param string $sequence |
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310 | * @param int &$i |
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311 | * @param array $references |
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312 | * |
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313 | * @return array |
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314 | * |
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315 | * @throws ParseException When malformed inline YAML string is parsed |
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316 | */ |
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317 | private static function parseSequence($sequence, &$i = 0, $references = array()) |
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318 | { |
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319 | $output = array(); |
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320 | $len = \strlen($sequence); |
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321 | ++$i; |
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322 | |||
323 | // [foo, bar, ...] |
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324 | while ($i < $len) { |
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325 | switch ($sequence[$i]) { |
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326 | case '[': |
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327 | // nested sequence |
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328 | $output[] = self::parseSequence($sequence, $i, $references); |
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329 | break; |
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330 | case '{': |
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331 | // nested mapping |
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332 | $output[] = self::parseMapping($sequence, $i, $references); |
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333 | break; |
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334 | case ']': |
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335 | return $output; |
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336 | case ',': |
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337 | case ' ': |
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338 | break; |
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339 | default: |
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340 | $isQuoted = \in_array($sequence[$i], array('"', "'")); |
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341 | $value = self::parseScalar($sequence, array(',', ']'), array('"', "'"), $i, true, $references); |
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342 | |||
343 | // the value can be an array if a reference has been resolved to an array var |
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344 | if (!\is_array($value) && !$isQuoted && false !== strpos($value, ': ')) { |
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345 | // embedded mapping? |
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346 | try { |
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347 | $pos = 0; |
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348 | $value = self::parseMapping('{'.$value.'}', $pos, $references); |
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349 | } catch (\InvalidArgumentException $e) { |
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350 | // no, it's not |
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351 | } |
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352 | } |
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353 | |||
354 | $output[] = $value; |
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355 | |||
356 | --$i; |
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357 | } |
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358 | |||
359 | ++$i; |
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360 | } |
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361 | |||
362 | throw new ParseException(sprintf('Malformed inline YAML string: %s.', $sequence)); |
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363 | } |
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364 | |||
365 | /** |
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366 | * Parses a YAML mapping. |
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367 | * |
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368 | * @param string $mapping |
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369 | * @param int &$i |
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370 | * @param array $references |
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371 | * |
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372 | * @return array|\stdClass |
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373 | * |
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374 | * @throws ParseException When malformed inline YAML string is parsed |
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375 | */ |
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376 | private static function parseMapping($mapping, &$i = 0, $references = array()) |
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377 | { |
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378 | $output = array(); |
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379 | $len = \strlen($mapping); |
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380 | ++$i; |
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381 | $allowOverwrite = false; |
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382 | |||
383 | // {foo: bar, bar:foo, ...} |
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384 | while ($i < $len) { |
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385 | switch ($mapping[$i]) { |
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386 | case ' ': |
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387 | case ',': |
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388 | ++$i; |
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389 | continue 2; |
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390 | case '}': |
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391 | if (self::$objectForMap) { |
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392 | return (object) $output; |
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393 | } |
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394 | |||
395 | return $output; |
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396 | } |
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397 | |||
398 | // key |
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399 | $key = self::parseScalar($mapping, array(':', ' '), array('"', "'"), $i, false); |
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400 | |||
401 | if ('<<' === $key) { |
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402 | $allowOverwrite = true; |
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403 | } |
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404 | |||
405 | // value |
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406 | $done = false; |
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407 | |||
408 | while ($i < $len) { |
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409 | switch ($mapping[$i]) { |
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410 | case '[': |
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411 | // nested sequence |
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412 | $value = self::parseSequence($mapping, $i, $references); |
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413 | // Spec: Keys MUST be unique; first one wins. |
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414 | // Parser cannot abort this mapping earlier, since lines |
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415 | // are processed sequentially. |
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416 | // But overwriting is allowed when a merge node is used in current block. |
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417 | if ('<<' === $key) { |
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418 | foreach ($value as $parsedValue) { |
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419 | $output += $parsedValue; |
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420 | } |
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421 | } elseif ($allowOverwrite || !isset($output[$key])) { |
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422 | $output[$key] = $value; |
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423 | } |
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424 | $done = true; |
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425 | break; |
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426 | case '{': |
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427 | // nested mapping |
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428 | $value = self::parseMapping($mapping, $i, $references); |
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429 | // Spec: Keys MUST be unique; first one wins. |
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430 | // Parser cannot abort this mapping earlier, since lines |
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431 | // are processed sequentially. |
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432 | // But overwriting is allowed when a merge node is used in current block. |
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433 | if ('<<' === $key) { |
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434 | $output += $value; |
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435 | } elseif ($allowOverwrite || !isset($output[$key])) { |
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436 | $output[$key] = $value; |
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437 | } |
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438 | $done = true; |
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439 | break; |
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440 | case ':': |
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441 | case ' ': |
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442 | break; |
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443 | default: |
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444 | $value = self::parseScalar($mapping, array(',', '}'), array('"', "'"), $i, true, $references); |
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445 | // Spec: Keys MUST be unique; first one wins. |
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446 | // Parser cannot abort this mapping earlier, since lines |
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447 | // are processed sequentially. |
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448 | // But overwriting is allowed when a merge node is used in current block. |
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449 | if ('<<' === $key) { |
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450 | $output += $value; |
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451 | } elseif ($allowOverwrite || !isset($output[$key])) { |
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452 | $output[$key] = $value; |
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453 | } |
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454 | $done = true; |
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455 | --$i; |
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456 | } |
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457 | |||
458 | ++$i; |
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459 | |||
460 | if ($done) { |
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461 | continue 2; |
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462 | } |
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463 | } |
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464 | } |
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465 | |||
466 | throw new ParseException(sprintf('Malformed inline YAML string: %s.', $mapping)); |
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467 | } |
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468 | |||
469 | /** |
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470 | * Evaluates scalars and replaces magic values. |
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471 | * |
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472 | * @param string $scalar |
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473 | * @param array $references |
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474 | * |
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475 | * @return mixed The evaluated YAML string |
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476 | * |
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477 | * @throws ParseException when object parsing support was disabled and the parser detected a PHP object or when a reference could not be resolved |
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478 | */ |
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479 | private static function evaluateScalar($scalar, $references = array()) |
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480 | { |
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481 | $scalar = trim($scalar); |
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482 | $scalarLower = strtolower($scalar); |
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483 | |||
484 | if (0 === strpos($scalar, '*')) { |
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485 | if (false !== $pos = strpos($scalar, '#')) { |
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486 | $value = substr($scalar, 1, $pos - 2); |
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487 | } else { |
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488 | $value = substr($scalar, 1); |
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489 | } |
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490 | |||
491 | // an unquoted * |
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492 | if (false === $value || '' === $value) { |
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493 | throw new ParseException('A reference must contain at least one character.'); |
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494 | } |
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495 | |||
496 | if (!array_key_exists($value, $references)) { |
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497 | throw new ParseException(sprintf('Reference "%s" does not exist.', $value)); |
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498 | } |
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499 | |||
500 | return $references[$value]; |
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501 | } |
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502 | |||
503 | switch (true) { |
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504 | case 'null' === $scalarLower: |
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505 | case '' === $scalar: |
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506 | case '~' === $scalar: |
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507 | return; |
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508 | case 'true' === $scalarLower: |
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509 | return true; |
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510 | case 'false' === $scalarLower: |
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511 | return false; |
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512 | // Optimise for returning strings. |
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513 | case '+' === $scalar[0] || '-' === $scalar[0] || '.' === $scalar[0] || '!' === $scalar[0] || is_numeric($scalar[0]): |
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514 | switch (true) { |
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515 | case 0 === strpos($scalar, '!str'): |
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516 | return (string) substr($scalar, 5); |
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517 | case 0 === strpos($scalar, '! '): |
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518 | return (int) self::parseScalar(substr($scalar, 2)); |
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519 | case 0 === strpos($scalar, '!php/object:'): |
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520 | if (self::$objectSupport) { |
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521 | return unserialize(substr($scalar, 12)); |
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522 | } |
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523 | |||
524 | if (self::$exceptionOnInvalidType) { |
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525 | throw new ParseException('Object support when parsing a YAML file has been disabled.'); |
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526 | } |
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527 | |||
528 | return; |
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529 | case 0 === strpos($scalar, '!!php/object:'): |
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530 | if (self::$objectSupport) { |
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531 | return unserialize(substr($scalar, 13)); |
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532 | } |
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533 | |||
534 | if (self::$exceptionOnInvalidType) { |
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535 | throw new ParseException('Object support when parsing a YAML file has been disabled.'); |
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536 | } |
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537 | |||
538 | return; |
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539 | case 0 === strpos($scalar, '!!float '): |
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540 | return (float) substr($scalar, 8); |
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541 | case ctype_digit($scalar): |
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542 | $raw = $scalar; |
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543 | $cast = (int) $scalar; |
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544 | |||
545 | return '0' == $scalar[0] ? octdec($scalar) : (((string) $raw == (string) $cast) ? $cast : $raw); |
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546 | case '-' === $scalar[0] && ctype_digit(substr($scalar, 1)): |
||
547 | $raw = $scalar; |
||
548 | $cast = (int) $scalar; |
||
549 | |||
550 | return '0' == $scalar[1] ? octdec($scalar) : (((string) $raw === (string) $cast) ? $cast : $raw); |
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551 | case is_numeric($scalar): |
||
552 | case Parser::preg_match(self::getHexRegex(), $scalar): |
||
553 | return '0x' === $scalar[0].$scalar[1] ? hexdec($scalar) : (float) $scalar; |
||
554 | case '.inf' === $scalarLower: |
||
555 | case '.nan' === $scalarLower: |
||
556 | return -log(0); |
||
557 | case '-.inf' === $scalarLower: |
||
558 | return log(0); |
||
559 | case Parser::preg_match('/^(-|\+)?[0-9,]+(\.[0-9]+)?$/', $scalar): |
||
560 | return (float) str_replace(',', '', $scalar); |
||
561 | case Parser::preg_match(self::getTimestampRegex(), $scalar): |
||
562 | $timeZone = date_default_timezone_get(); |
||
563 | date_default_timezone_set('UTC'); |
||
564 | $time = strtotime($scalar); |
||
565 | date_default_timezone_set($timeZone); |
||
566 | |||
567 | return $time; |
||
568 | } |
||
569 | // no break |
||
570 | default: |
||
571 | return (string) $scalar; |
||
572 | } |
||
573 | } |
||
574 | |||
575 | /** |
||
576 | * Gets a regex that matches a YAML date. |
||
577 | * |
||
578 | * @return string The regular expression |
||
579 | * |
||
580 | * @see http://www.yaml.org/spec/1.2/spec.html#id2761573 |
||
581 | */ |
||
582 | private static function getTimestampRegex() |
||
583 | { |
||
584 | return <<<EOF |
||
585 | ~^ |
||
586 | (?P<year>[0-9][0-9][0-9][0-9]) |
||
587 | -(?P<month>[0-9][0-9]?) |
||
588 | -(?P<day>[0-9][0-9]?) |
||
589 | (?:(?:[Tt]|[ \t]+) |
||
590 | (?P<hour>[0-9][0-9]?) |
||
591 | :(?P<minute>[0-9][0-9]) |
||
592 | :(?P<second>[0-9][0-9]) |
||
593 | (?:\.(?P<fraction>[0-9]*))? |
||
594 | (?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?) |
||
595 | (?::(?P<tz_minute>[0-9][0-9]))?))?)? |
||
596 | $~x |
||
597 | EOF; |
||
598 | } |
||
599 | |||
600 | /** |
||
601 | * Gets a regex that matches a YAML number in hexadecimal notation. |
||
602 | * |
||
603 | * @return string |
||
604 | */ |
||
605 | private static function getHexRegex() |
||
608 | } |
||
609 | } |
||
610 |