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1 | <?php |
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2 | |||
3 | namespace League\JsonReference; |
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4 | |||
5 | use League\JsonReference\ReferenceSerializer\SafeReferenceSerializer; |
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6 | use League\JsonReference\ScopeResolver\JsonSchemaScopeResolver; |
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7 | use League\JsonReference\ScopeResolver\NullScopeResolver; |
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8 | |||
9 | final class Dereferencer implements DereferencerInterface |
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10 | { |
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11 | /** |
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12 | * @var LoaderManager |
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13 | */ |
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14 | private $loaderManager; |
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15 | |||
16 | /** |
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17 | * @var ScopeResolverInterface |
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18 | */ |
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19 | private $scopeResolver; |
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20 | |||
21 | /** |
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22 | * @var ReferenceSerializerInterface |
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23 | */ |
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24 | private $referenceSerializer; |
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25 | |||
26 | /** |
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27 | * Create a new Dereferencer. |
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28 | * |
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29 | * @param ScopeResolverInterface $scopeResolver |
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30 | * @param \League\JsonReference\ReferenceSerializerInterface $referenceSerializer |
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31 | */ |
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32 | 54 | public function __construct( |
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33 | ScopeResolverInterface $scopeResolver = null, |
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34 | ReferenceSerializerInterface $referenceSerializer = null |
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35 | ) { |
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36 | 54 | $this->scopeResolver = $scopeResolver ?: new NullScopeResolver(); |
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37 | 54 | $this->referenceSerializer = $referenceSerializer ?: new SafeReferenceSerializer(); |
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38 | 54 | $this->loaderManager = new LoaderManager(); |
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39 | |||
40 | 54 | Reference::setDereferencerInstance($this); |
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41 | 54 | } |
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42 | |||
43 | /** |
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44 | * Create a new dereferencer configured for dereferencing JSON Schema Draft4 schemas. |
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45 | * |
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46 | * @return \League\JsonReference\Dereferencer |
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47 | */ |
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48 | 2 | public static function draft4() |
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49 | { |
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50 | 2 | return new self(new JsonSchemaScopeResolver(JsonSchemaScopeResolver::KEYWORD_DRAFT_4)); |
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51 | } |
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52 | |||
53 | /** |
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54 | * Create a new dereferencer configured for dereferencing JSON Schema Draft6 schemas. |
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55 | * |
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56 | * @return \League\JsonReference\Dereferencer |
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57 | */ |
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58 | public static function draft6() |
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59 | { |
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60 | return new self(new JsonSchemaScopeResolver(JsonSchemaScopeResolver::KEYWORD_DRAFT_6)); |
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61 | } |
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62 | |||
63 | /** |
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64 | * {@inheritdoc} |
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65 | */ |
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66 | public function dereference($schema, $uri = '') |
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67 | { |
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68 | 52 | return $this->crawl($schema, $uri, function ($schema, $pointer, $ref, $scope) { |
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69 | 48 | $resolved = new Reference($ref, $scope, is_internal_ref($ref) ? $schema : null); |
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70 | 48 | return merge_ref($schema, $resolved, $pointer); |
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71 | 52 | }); |
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72 | } |
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73 | |||
74 | /** |
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75 | * @param object|string $schema |
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76 | * @param string $uri |
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77 | * |
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78 | * @return array |
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79 | */ |
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80 | 52 | private function prepareArguments($schema, $uri) |
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81 | { |
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82 | 52 | if (is_string($schema)) { |
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83 | 48 | $uri = $schema; |
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84 | 48 | $schema = resolve_fragment($uri, $this->loadExternalRef($uri)); |
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85 | 44 | $uri = strip_fragment($uri); |
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86 | 22 | } |
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87 | |||
88 | 50 | return [$schema, $uri]; |
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89 | } |
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90 | |||
91 | /** |
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92 | * @return LoaderManager |
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93 | */ |
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94 | 10 | public function getLoaderManager() |
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95 | { |
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96 | 10 | return $this->loaderManager; |
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97 | } |
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98 | |||
99 | /** |
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100 | * @param \League\JsonReference\LoaderManager $loaderManager |
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101 | * |
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102 | * @return \League\JsonReference\Dereferencer |
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103 | */ |
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104 | public function setLoaderManager(LoaderManager $loaderManager) |
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105 | { |
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106 | $this->loaderManager = $loaderManager; |
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107 | |||
108 | return $this; |
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109 | } |
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110 | |||
111 | /** |
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112 | * @return \League\JsonReference\ScopeResolverInterface |
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113 | */ |
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114 | public function getScopeResolver() |
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115 | { |
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116 | return $this->scopeResolver; |
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117 | } |
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118 | |||
119 | /** |
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120 | * @param \League\JsonReference\ScopeResolverInterface $scopeResolver |
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121 | * |
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122 | * @return \League\JsonReference\Dereferencer |
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123 | */ |
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124 | public function setScopeResolver(ScopeResolverInterface $scopeResolver) |
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125 | { |
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126 | $this->scopeResolver = $scopeResolver; |
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127 | |||
128 | return $this; |
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129 | } |
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130 | |||
131 | /** |
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132 | * @return \League\JsonReference\ReferenceSerializerInterface |
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133 | */ |
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134 | 16 | public function getReferenceSerializer() |
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135 | { |
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136 | 16 | return $this->referenceSerializer; |
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137 | } |
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138 | |||
139 | /** |
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140 | * @param \League\JsonReference\ReferenceSerializerInterface $referenceSerializer |
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141 | * |
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142 | * @return \League\JsonReference\Dereferencer |
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143 | */ |
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144 | 8 | public function setReferenceSerializer(ReferenceSerializerInterface $referenceSerializer) |
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145 | { |
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146 | 8 | $this->referenceSerializer = $referenceSerializer; |
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147 | |||
148 | 8 | return $this; |
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149 | } |
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150 | |||
151 | /** |
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152 | * @param object $schema |
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153 | * @param string $uri |
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154 | * @param callable $resolver |
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155 | * |
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156 | * @return object |
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157 | */ |
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158 | 52 | private function crawl($schema, $uri, callable $resolver) |
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159 | { |
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160 | 52 | list($schema, $uri) = $this->prepareArguments($schema, $uri); |
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161 | |||
162 | 50 | foreach (schema_extract($schema, 'League\JsonReference\is_ref') as $pointer => $ref) { |
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163 | 48 | $scope = $this->scopeResolver->resolve($schema, $pointer, $uri); |
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164 | |||
165 | 48 | $schema = $resolver($schema, $pointer, $ref, $scope); |
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166 | 24 | } |
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167 | |||
168 | 48 | return $schema; |
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169 | } |
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170 | |||
171 | /** |
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172 | * Load an external ref and return the JSON object. |
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173 | * |
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174 | * @param string $reference |
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175 | * |
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176 | * @return object |
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177 | */ |
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178 | 48 | private function loadExternalRef($reference) |
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179 | { |
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180 | 48 | list($prefix, $path) = parse_external_ref($reference); |
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181 | 46 | return $this->loaderManager->getLoader($prefix)->load($path); |
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182 | } |
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183 | } |
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184 |
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An additional type check may prevent trouble.