| Total Complexity | 78 |
| Total Lines | 591 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like Api 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 Api, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | class Api extends Sanity |
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| 14 | { |
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| 15 | /** @var string */ |
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| 16 | private $url = 'https://api.github.com'; |
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| 17 | |||
| 18 | /** @var string */ |
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| 19 | private $defaultAccept = 'application/vnd.github.v3+json'; |
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| 20 | |||
| 21 | /** @var array|NULL */ |
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| 22 | private $defaultParameters = []; |
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| 23 | |||
| 24 | /** @var Http\IClient */ |
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| 25 | private $client; |
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| 26 | |||
| 27 | /** @var OAuth\Token|NULL */ |
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| 28 | private $token; |
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| 29 | |||
| 30 | |||
| 31 | public function __construct(Http\IClient $client = NULL) |
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| 32 | { |
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| 33 | $this->client = $client ?: Helpers::createDefaultClient(); |
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| 34 | } |
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| 35 | |||
| 36 | |||
| 37 | /** |
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| 38 | * @return self |
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| 39 | */ |
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| 40 | public function setToken(OAuth\Token $token = NULL) |
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| 41 | { |
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| 42 | $this->token = $token; |
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| 43 | return $this; |
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| 44 | } |
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| 45 | |||
| 46 | |||
| 47 | /** |
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| 48 | * @return OAuth\Token|NULL |
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| 49 | */ |
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| 50 | public function getToken() |
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| 51 | { |
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| 52 | return $this->token; |
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| 53 | } |
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| 54 | |||
| 55 | |||
| 56 | /** |
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| 57 | * @param array |
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| 58 | * @return self |
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| 59 | */ |
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| 60 | public function setDefaultParameters(array $defaults = NULL) |
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| 61 | { |
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| 62 | $this->defaultParameters = $defaults ?: []; |
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| 63 | return $this; |
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| 64 | } |
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| 65 | |||
| 66 | |||
| 67 | /** |
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| 68 | * @return array |
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| 69 | */ |
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| 70 | public function getDefaultParameters() |
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| 71 | { |
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| 72 | return $this->defaultParameters; |
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| 73 | } |
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| 74 | |||
| 75 | |||
| 76 | /** |
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| 77 | * @param string |
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| 78 | * @return self |
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| 79 | */ |
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| 80 | public function setDefaultAccept($accept) |
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| 81 | { |
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| 82 | $this->defaultAccept = $accept; |
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| 83 | return $this; |
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| 84 | } |
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| 85 | |||
| 86 | |||
| 87 | /** |
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| 88 | * @return string |
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| 89 | */ |
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| 90 | public function getDefaultAccept() |
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| 93 | } |
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| 94 | |||
| 95 | |||
| 96 | /** |
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| 97 | * @see createRequest() |
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| 98 | * @see request() |
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| 99 | * |
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| 100 | * @param string |
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| 101 | * @return Http\Response |
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| 102 | * |
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| 103 | * @throws MissingParameterException |
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| 104 | */ |
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| 105 | public function delete($urlPath, array $parameters = [], array $headers = []) |
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| 106 | { |
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| 107 | return $this->request( |
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| 108 | $this->createRequest(Http\Request::DELETE, $urlPath, $parameters, $headers) |
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| 109 | ); |
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| 110 | } |
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| 111 | |||
| 112 | |||
| 113 | /** |
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| 114 | * @see createRequest() |
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| 115 | * @see request() |
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| 116 | * |
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| 117 | * @param string |
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| 118 | * @return Http\Response |
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| 119 | * |
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| 120 | * @throws MissingParameterException |
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| 121 | */ |
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| 122 | public function get($urlPath, array $parameters = [], array $headers = []) |
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| 123 | { |
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| 124 | return $this->request( |
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| 125 | $this->createRequest(Http\Request::GET, $urlPath, $parameters, $headers) |
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| 126 | ); |
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| 127 | } |
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| 128 | |||
| 129 | |||
| 130 | /** |
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| 131 | * @see createRequest() |
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| 132 | * @see request() |
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| 133 | * |
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| 134 | * @param string |
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| 135 | * @return Http\Response |
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| 136 | * |
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| 137 | * @throws MissingParameterException |
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| 138 | */ |
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| 139 | public function head($urlPath, array $parameters = [], array $headers = []) |
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| 140 | { |
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| 141 | return $this->request( |
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| 142 | $this->createRequest(Http\Request::HEAD, $urlPath, $parameters, $headers) |
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| 143 | ); |
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| 144 | } |
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| 145 | |||
| 146 | |||
| 147 | /** |
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| 148 | * @see createRequest() |
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| 149 | * @see request() |
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| 150 | * |
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| 151 | * @param string |
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| 152 | * @param mixed |
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| 153 | * @return Http\Response |
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| 154 | * |
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| 155 | * @throws MissingParameterException |
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| 156 | * @throws JsonException |
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| 157 | */ |
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| 158 | public function patch($urlPath, $content, array $parameters = [], array $headers = []) |
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| 159 | { |
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| 160 | return $this->request( |
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| 161 | $this->createRequest(Http\Request::PATCH, $urlPath, $parameters, $headers, $content) |
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| 162 | ); |
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| 163 | } |
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| 164 | |||
| 165 | |||
| 166 | /** |
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| 167 | * @see createRequest() |
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| 168 | * @see request() |
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| 169 | * |
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| 170 | * @param string |
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| 171 | * @param mixed |
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| 172 | * @return Http\Response |
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| 173 | * |
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| 174 | * @throws MissingParameterException |
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| 175 | * @throws JsonException |
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| 176 | */ |
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| 177 | public function post($urlPath, $content, array $parameters = [], array $headers = []) |
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| 178 | { |
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| 179 | return $this->request( |
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| 180 | $this->createRequest(Http\Request::POST, $urlPath, $parameters, $headers, $content) |
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| 181 | ); |
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| 182 | } |
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| 183 | |||
| 184 | |||
| 185 | /** |
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| 186 | * @see createRequest() |
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| 187 | * @see request() |
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| 188 | * |
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| 189 | * @param string |
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| 190 | * @param mixed |
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| 191 | * @return Http\Response |
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| 192 | * |
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| 193 | * @throws MissingParameterException |
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| 194 | * @throws JsonException |
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| 195 | */ |
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| 196 | public function put($urlPath, $content = NULL, array $parameters = [], array $headers = []) |
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| 197 | { |
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| 198 | return $this->request( |
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| 199 | $this->createRequest(Http\Request::PUT, $urlPath, $parameters, $headers, $content) |
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| 200 | ); |
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| 201 | } |
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| 202 | |||
| 203 | |||
| 204 | /** |
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| 205 | * @return Http\Response |
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| 206 | * |
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| 207 | * @throws Http\BadResponseException |
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| 208 | */ |
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| 209 | public function request(Http\Request $request) |
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| 210 | { |
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| 211 | $request = clone $request; |
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| 212 | |||
| 213 | $request->addHeader('Accept', $this->defaultAccept); |
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| 214 | $request->addHeader('Time-Zone', date_default_timezone_get()); |
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| 215 | $request->addHeader('User-Agent', 'milo/github-api'); |
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| 216 | |||
| 217 | if ($this->token) { |
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| 218 | /** @todo Distinguish token type? */ |
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| 219 | $request->addHeader('Authorization', "token {$this->token->getValue()}"); |
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| 220 | } |
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| 221 | |||
| 222 | return $this->client->request($request); |
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| 223 | } |
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| 224 | |||
| 225 | |||
| 226 | /** |
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| 227 | * @param string Http\Request::GET|POST|... |
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| 228 | * @param string path like '/users/:user/repos' where ':user' is substitution |
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| 229 | * @param array[name => value] replaces substitutions in $urlPath, the rest is appended as query string to URL |
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|
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| 230 | * @param array[name => value] name is case-insensitive |
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| 231 | * @param mixed|NULL arrays and objects are encoded to JSON and Content-Type is set |
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| 232 | * @return Http\Request |
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| 233 | * |
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| 234 | * @throws MissingParameterException when substitution is used in URL but parameter is missing |
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| 235 | * @throws JsonException when encoding to JSON fails |
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| 236 | */ |
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| 237 | public function createRequest($method, $urlPath, array $parameters = [], array $headers = [], $content = NULL) |
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| 238 | { |
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| 239 | if (stripos($urlPath, $this->url) === 0) { # Allows non-HTTPS URLs |
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| 240 | $baseUrl = $this->url; |
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| 241 | $urlPath = substr($urlPath, strlen($this->url)); |
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| 242 | |||
| 243 | } elseif (preg_match('#^(https://[^/]+)(/.*)?$#', $urlPath, $m)) { |
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| 244 | $baseUrl = $m[1]; |
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| 245 | $urlPath = isset($m[2]) ? $m[2] : ''; |
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| 246 | |||
| 247 | } else { |
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| 248 | $baseUrl = $this->url; |
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| 249 | } |
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| 250 | |||
| 251 | if (strpos($urlPath, '{') === FALSE) { |
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| 252 | $urlPath = $this->expandColonParameters($urlPath, $parameters, $this->defaultParameters); |
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| 253 | } else { |
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| 254 | $urlPath = $this->expandUriTemplate($urlPath, $parameters, $this->defaultParameters); |
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| 255 | } |
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| 256 | |||
| 257 | $url = rtrim($baseUrl, '/') . '/' . ltrim($urlPath, '/'); |
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| 258 | |||
| 259 | if ($content !== NULL && (is_array($content) || is_object($content))) { |
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| 260 | $headers['Content-Type'] = 'application/json; charset=utf-8'; |
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| 261 | $content = Helpers::jsonEncode($content); |
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| 262 | } |
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| 263 | |||
| 264 | return new Http\Request($method, $url, $headers, $content); |
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| 265 | } |
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| 266 | |||
| 267 | |||
| 268 | /** |
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| 269 | * @param Http\Response |
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| 270 | * @param array|NULL these codes are treated as success; code < 300 if NULL |
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| 271 | * @return mixed |
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| 272 | * |
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| 273 | * @throws ApiException |
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| 274 | */ |
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| 275 | public function decode(Http\Response $response, array $okCodes = NULL) |
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| 276 | { |
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| 277 | $content = $response->getContent(); |
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| 278 | if (preg_match('~application/json~i', $response->getHeader('Content-Type', ''))) { |
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| 279 | try { |
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| 280 | $content = Helpers::jsonDecode($response->getContent(), true); |
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| 281 | } catch (JsonException $e) { |
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| 282 | throw new InvalidResponseException('JSON decoding failed.', 0, $e, $response); |
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| 283 | } |
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| 284 | |||
| 285 | if (!is_array($content) && !is_object($content)) { |
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| 286 | throw new InvalidResponseException('Decoded JSON is not an array or object.', 0, NULL, $response); |
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| 287 | } |
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| 288 | } |
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| 289 | |||
| 290 | $code = $response->getCode(); |
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| 291 | if (($okCodes === NULL && $code >= 300) || (is_array($okCodes) && !in_array($code, $okCodes))) { |
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| 292 | /** @var $content \stdClass */ |
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| 293 | switch ($code) { |
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| 294 | case Http\Response::S400_BAD_REQUEST: |
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| 295 | throw new BadRequestException(self::errorMessage($content), $code, NULL, $response); |
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| 296 | |||
| 297 | case Http\Response::S401_UNAUTHORIZED: |
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| 298 | throw new UnauthorizedException(self::errorMessage($content), $code, NULL, $response); |
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| 299 | |||
| 300 | case Http\Response::S403_FORBIDDEN: |
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| 301 | if ($response->getHeader('X-RateLimit-Remaining') === '0') { |
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| 302 | throw new RateLimitExceedException(self::errorMessage($content), $code, NULL, $response); |
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| 303 | } |
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| 304 | throw new ForbiddenException(self::errorMessage($content), $code, NULL, $response); |
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| 305 | |||
| 306 | case Http\Response::S404_NOT_FOUND: |
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| 307 | throw new NotFoundException('Resource not found or not authorized to access.', $code, NULL, $response); |
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| 308 | |||
| 309 | case Http\Response::S422_UNPROCESSABLE_ENTITY: |
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| 310 | throw new UnprocessableEntityException(self::errorMessage($content), $code, NULL, $response); |
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| 311 | } |
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| 312 | |||
| 313 | $message = $okCodes === NULL ? '< 300' : implode(' or ', $okCodes); |
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| 314 | throw new UnexpectedResponseException("Expected response with code $message.", $code, NULL, $response); |
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| 315 | } |
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| 316 | |||
| 317 | return $content; |
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| 318 | } |
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| 319 | |||
| 320 | |||
| 321 | /** |
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| 322 | * Creates paginator for HTTP GET requests. |
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| 323 | * |
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| 324 | * @see get() |
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| 325 | * |
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| 326 | * @param string |
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| 327 | * @return Paginator |
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| 328 | * |
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| 329 | * @throws MissingParameterException |
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| 330 | */ |
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| 331 | public function paginator($urlPath, array $parameters = [], array $headers = []) |
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| 332 | { |
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| 333 | return new Paginator( |
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| 334 | $this, |
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| 335 | $this->createRequest(Http\Request::GET, $urlPath, $parameters, $headers) |
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| 336 | ); |
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| 337 | } |
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| 338 | |||
| 339 | |||
| 340 | /** |
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| 341 | * @return Http\IClient |
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| 342 | */ |
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| 343 | public function getClient() |
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| 344 | { |
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| 345 | return $this->client; |
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| 346 | } |
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| 347 | |||
| 348 | |||
| 349 | /** |
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| 350 | * @param string |
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| 351 | * @return Api |
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| 352 | */ |
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| 353 | public function withUrl($url) |
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| 354 | { |
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| 355 | $api = clone $this; |
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| 356 | $api->setUrl($url); |
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| 357 | return $api; |
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| 358 | } |
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| 359 | |||
| 360 | |||
| 361 | /** |
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| 362 | * @param string |
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| 363 | * @return self |
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| 364 | */ |
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| 365 | public function setUrl($url) |
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| 369 | } |
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| 370 | |||
| 371 | |||
| 372 | /** |
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| 373 | * @return string |
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| 374 | */ |
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| 375 | public function getUrl() |
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| 378 | } |
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| 379 | |||
| 380 | |||
| 381 | /** |
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| 382 | * @param string |
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| 383 | * @return string |
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| 384 | * |
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| 385 | * @throws MissingParameterException |
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| 386 | */ |
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| 387 | protected function expandColonParameters($url, array $parameters, array $defaultParameters) |
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| 388 | { |
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| 389 | $parameters += $defaultParameters; |
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| 390 | |||
| 391 | $url = preg_replace_callback('#(^|/|\.):([^/.]+)#', function($m) use ($url, & $parameters) { |
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| 392 | if (!isset($parameters[$m[2]])) { |
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| 393 | throw new MissingParameterException("Missing parameter '$m[2]' for URL path '$url'."); |
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| 394 | } |
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| 395 | $parameter = $parameters[$m[2]]; |
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| 396 | unset($parameters[$m[2]]); |
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| 397 | return $m[1] . rawurlencode($parameter); |
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| 398 | }, $url); |
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| 399 | |||
| 400 | $url = rtrim($url, '/'); |
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| 401 | |||
| 402 | if (count($parameters)) { |
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| 403 | $url .= '?' . http_build_query($parameters); |
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| 404 | } |
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| 405 | |||
| 406 | return $url; |
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| 407 | } |
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| 408 | |||
| 409 | |||
| 410 | /** |
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| 411 | * Expands URI template (RFC 6570). |
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| 412 | * |
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| 413 | * @see http://tools.ietf.org/html/rfc6570 |
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| 414 | * @todo Inject remaining default parameters into query string? |
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| 415 | * |
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| 416 | * @param string |
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| 417 | * @return string |
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| 418 | */ |
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| 419 | protected function expandUriTemplate($url, array $parameters, array $defaultParameters) |
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| 420 | { |
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| 421 | $parameters += $defaultParameters; |
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| 422 | |||
| 423 | static $operatorFlags = [ |
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| 424 | '' => ['prefix' => '', 'separator' => ',', 'named' => FALSE, 'ifEmpty' => '', 'reserved' => FALSE], |
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| 425 | '+' => ['prefix' => '', 'separator' => ',', 'named' => FALSE, 'ifEmpty' => '', 'reserved' => TRUE], |
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| 426 | '#' => ['prefix' => '#', 'separator' => ',', 'named' => FALSE, 'ifEmpty' => '', 'reserved' => TRUE], |
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| 427 | '.' => ['prefix' => '.', 'separator' => '.', 'named' => FALSE, 'ifEmpty' => '', 'reserved' => FALSE], |
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| 428 | '/' => ['prefix' => '/', 'separator' => '/', 'named' => FALSE, 'ifEmpty' => '', 'reserved' => FALSE], |
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| 429 | ';' => ['prefix' => ';', 'separator' => ';', 'named' => TRUE, 'ifEmpty' => '', 'reserved' => FALSE], |
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| 430 | '?' => ['prefix' => '?', 'separator' => '&', 'named' => TRUE, 'ifEmpty' => '=', 'reserved' => FALSE], |
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| 431 | '&' => ['prefix' => '&', 'separator' => '&', 'named' => TRUE, 'ifEmpty' => '=', 'reserved' => FALSE], |
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| 432 | ]; |
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| 433 | |||
| 434 | return preg_replace_callback('~{([+#./;?&])?([^}]+?)}~', function($m) use ($url, & $parameters, $operatorFlags) { |
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| 435 | $flags = $operatorFlags[$m[1]]; |
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| 436 | |||
| 437 | $translated = []; |
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| 438 | foreach (explode(',', $m[2]) as $name) { |
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| 439 | $explode = FALSE; |
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| 440 | $maxLength = NULL; |
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| 441 | if (preg_match('~^(.+)(?:(\*)|:(\d+))$~', $name, $tmp)) { // TODO: Speed up? |
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| 442 | $name = $tmp[1]; |
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| 443 | if (isset($tmp[3])) { |
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| 444 | $maxLength = (int) $tmp[3]; |
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| 445 | } else { |
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| 446 | $explode = TRUE; |
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| 447 | } |
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| 448 | } |
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| 449 | |||
| 450 | if (!isset($parameters[$name])) { // TODO: Throw exception? |
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| 451 | continue; |
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| 452 | } |
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| 453 | |||
| 454 | $value = $parameters[$name]; |
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| 455 | if (is_scalar($value)) { |
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| 456 | $translated[] = $this->prefix($flags, $name, $this->escape($flags, $value, $maxLength)); |
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| 457 | |||
| 458 | } else { |
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| 459 | $value = (array) $value; |
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| 460 | $isAssoc = key($value) !== 0; |
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| 461 | |||
| 462 | // The '*' (explode) modifier |
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| 463 | if ($explode) { |
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| 464 | $parts = []; |
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| 465 | if ($isAssoc) { |
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| 466 | $this->walk($value, function ($v, $k) use (& $parts, $flags, $maxLength) { |
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| 467 | $parts[] = $this->prefix(['named' => TRUE] + $flags, $k, $this->escape($flags, $v, $maxLength)); |
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| 468 | }); |
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| 469 | |||
| 470 | } elseif ($flags['named']) { |
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| 471 | $this->walk($value, function ($v) use (& $parts, $flags, $name, $maxLength) { |
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| 472 | $parts[] = $this->prefix($flags, $name, $this->escape($flags, $v, $maxLength)); |
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| 473 | }); |
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| 474 | |||
| 475 | } else { |
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| 476 | $this->walk($value, function ($v) use (& $parts, $flags, $maxLength) { |
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| 477 | $parts[] = $this->escape($flags, $v, $maxLength); |
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| 478 | }); |
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| 479 | } |
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| 480 | |||
| 481 | if (isset($parts[0])) { |
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| 482 | if ($flags['named']) { |
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| 483 | $translated[] = implode($flags['separator'], $parts); |
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| 484 | } else { |
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| 485 | $translated[] = $this->prefix($flags, $name, implode($flags['separator'], $parts)); |
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| 486 | } |
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| 487 | } |
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| 488 | |||
| 489 | } else { |
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| 490 | $parts = []; |
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| 491 | $this->walk($value, function($v, $k) use (& $parts, $isAssoc, $flags, $maxLength) { |
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| 492 | if ($isAssoc) { |
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| 493 | $parts[] = $this->escape($flags, $k); |
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| 494 | } |
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| 495 | |||
| 496 | $parts[] = $this->escape($flags, $v, $maxLength); |
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| 497 | }); |
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| 498 | |||
| 499 | if (isset($parts[0])) { |
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| 500 | $translated[] = $this->prefix($flags, $name, implode(',', $parts)); |
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| 501 | } |
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| 502 | } |
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| 503 | } |
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| 504 | } |
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| 505 | |||
| 506 | if (isset($translated[0])) { |
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| 507 | return $flags['prefix'] . implode($flags['separator'], $translated); |
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| 508 | } |
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| 509 | |||
| 510 | return ''; |
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| 511 | }, $url); |
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| 512 | } |
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| 513 | |||
| 514 | |||
| 515 | /** |
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| 516 | * @param array |
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| 517 | * @param string |
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| 518 | * @param string already escaped |
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| 519 | * @return string |
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| 520 | */ |
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| 521 | private function prefix(array $flags, $name, $value) |
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| 534 | } |
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| 535 | |||
| 536 | |||
| 537 | /** |
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| 538 | * @param array |
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| 539 | * @param mixed |
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| 540 | * @param int|NULL |
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| 541 | * @return string |
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| 542 | */ |
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| 543 | private function escape(array $flags, $value, $maxLength = NULL) |
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| 544 | { |
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| 545 | $value = (string) $value; |
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| 546 | |||
| 547 | if ($maxLength !== NULL) { |
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| 548 | if (preg_match('~^(.{' . $maxLength . '}).~u', $value, $m)) { |
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| 549 | $value = $m[1]; |
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| 550 | } elseif (strlen($value) > $maxLength) { # when malformed UTF-8 |
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| 551 | $value = substr($value, 0, $maxLength); |
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| 552 | } |
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| 553 | } |
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| 554 | |||
| 555 | if ($flags['reserved']) { |
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| 556 | $parts = preg_split('~(%[0-9a-fA-F]{2}|[:/?#[\]@!$&\'()*+,;=])~', $value, -1, PREG_SPLIT_DELIM_CAPTURE); |
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| 557 | $parts[] = ''; |
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| 558 | |||
| 559 | $escaped = ''; |
||
| 560 | for ($i = 0, $count = count($parts); $i < $count; $i += 2) { |
||
| 561 | $escaped .= rawurlencode($parts[$i]) . $parts[$i + 1]; |
||
| 562 | } |
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| 563 | |||
| 564 | return $escaped; |
||
| 565 | } |
||
| 566 | |||
| 567 | return rawurlencode($value); |
||
| 568 | } |
||
| 569 | |||
| 570 | |||
| 571 | /** |
||
| 572 | * @param array |
||
| 573 | * @param callable |
||
| 574 | */ |
||
| 575 | private function walk(array $array, $cb) |
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| 576 | { |
||
| 577 | foreach ($array as $k => $v) { |
||
| 578 | if ($v === NULL) { |
||
| 579 | continue; |
||
| 580 | } |
||
| 581 | |||
| 582 | $cb($v, $k); |
||
| 583 | } |
||
| 584 | } |
||
| 585 | |||
| 586 | |||
| 587 | /** |
||
| 588 | * @param \stdClass |
||
| 589 | * @return string |
||
| 590 | */ |
||
| 591 | private static function errorMessage($content) |
||
| 604 | } |
||
| 605 | |||
| 606 | } |
||
| 607 |