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1 | <?php |
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2 | /** |
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3 | * |
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4 | * |
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5 | * Created on Sep 19, 2006 |
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6 | * |
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7 | * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com" |
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8 | * |
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9 | * This program is free software; you can redistribute it and/or modify |
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10 | * it under the terms of the GNU General Public License as published by |
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11 | * the Free Software Foundation; either version 2 of the License, or |
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12 | * (at your option) any later version. |
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13 | * |
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14 | * This program is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License along |
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20 | * with this program; if not, write to the Free Software Foundation, Inc., |
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21 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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22 | * http://www.gnu.org/copyleft/gpl.html |
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23 | * |
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24 | * @file |
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25 | */ |
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26 | |||
27 | /** |
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28 | * API XML output formatter |
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29 | * @ingroup API |
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30 | */ |
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31 | class ApiFormatXml extends ApiFormatBase { |
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32 | |||
33 | private $mRootElemName = 'api'; |
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34 | public static $namespace = 'http://www.mediawiki.org/xml/api/'; |
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35 | private $mIncludeNamespace = false; |
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36 | private $mXslt = null; |
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37 | |||
38 | public function getMimeType() { |
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39 | return 'text/xml'; |
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40 | } |
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41 | |||
42 | public function setRootElement( $rootElemName ) { |
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43 | $this->mRootElemName = $rootElemName; |
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44 | } |
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45 | |||
46 | public function execute() { |
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47 | $params = $this->extractRequestParams(); |
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48 | $this->mIncludeNamespace = $params['includexmlnamespace']; |
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49 | $this->mXslt = $params['xslt']; |
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50 | |||
51 | $this->printText( '<?xml version="1.0"?>' ); |
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52 | if ( !is_null( $this->mXslt ) ) { |
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53 | $this->addXslt(); |
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54 | } |
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55 | |||
56 | $result = $this->getResult(); |
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57 | if ( $this->mIncludeNamespace && $result->getResultData( 'xmlns' ) === null ) { |
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58 | // If the result data already contains an 'xmlns' namespace added |
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59 | // for custom XML output types, it will override the one for the |
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60 | // generic API results. |
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61 | // This allows API output of other XML types like Atom, RSS, RSD. |
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62 | $result->addValue( null, 'xmlns', self::$namespace, ApiResult::NO_SIZE_CHECK ); |
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63 | } |
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64 | $data = $result->getResultData( null, [ |
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0 ignored issues
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65 | 'Custom' => function ( &$data, &$metadata ) { |
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66 | if ( isset( $metadata[ApiResult::META_TYPE] ) ) { |
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67 | // We want to use non-BC for BCassoc to force outputting of _idx. |
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68 | switch ( $metadata[ApiResult::META_TYPE] ) { |
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69 | case 'BCassoc': |
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70 | $metadata[ApiResult::META_TYPE] = 'assoc'; |
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71 | break; |
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72 | } |
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73 | } |
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74 | }, |
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75 | 'BC' => [ 'nobool', 'no*', 'nosub' ], |
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76 | 'Types' => [ 'ArmorKVP' => '_name' ], |
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77 | ] ); |
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78 | |||
79 | $this->printText( |
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80 | static::recXmlPrint( $this->mRootElemName, |
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81 | $data, |
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82 | $this->getIsHtml() ? -2 : null |
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83 | ) |
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84 | ); |
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85 | } |
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86 | |||
87 | /** |
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88 | * This method takes an array and converts it to XML. |
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89 | * |
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90 | * @param string|null $name Tag name |
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91 | * @param mixed $value Tag value (attributes/content/subelements) |
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92 | * @param int|null $indent Indentation |
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93 | * @param array $attributes Additional attributes |
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94 | * @return string |
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95 | */ |
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96 | public static function recXmlPrint( $name, $value, $indent, $attributes = [] ) { |
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97 | $retval = ''; |
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98 | if ( $indent !== null ) { |
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99 | if ( $name !== null ) { |
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100 | $indent += 2; |
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101 | } |
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102 | $indstr = "\n" . str_repeat( ' ', $indent ); |
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103 | } else { |
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104 | $indstr = ''; |
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105 | } |
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106 | |||
107 | if ( is_object( $value ) ) { |
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108 | $value = (array)$value; |
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109 | } |
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110 | if ( is_array( $value ) ) { |
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111 | $contentKey = isset( $value[ApiResult::META_CONTENT] ) |
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112 | ? $value[ApiResult::META_CONTENT] |
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113 | : '*'; |
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114 | $subelementKeys = isset( $value[ApiResult::META_SUBELEMENTS] ) |
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115 | ? $value[ApiResult::META_SUBELEMENTS] |
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116 | : []; |
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117 | if ( isset( $value[ApiResult::META_BC_SUBELEMENTS] ) ) { |
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118 | $subelementKeys = array_merge( |
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119 | $subelementKeys, $value[ApiResult::META_BC_SUBELEMENTS] |
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120 | ); |
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121 | } |
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122 | $preserveKeys = isset( $value[ApiResult::META_PRESERVE_KEYS] ) |
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123 | ? $value[ApiResult::META_PRESERVE_KEYS] |
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124 | : []; |
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125 | $indexedTagName = isset( $value[ApiResult::META_INDEXED_TAG_NAME] ) |
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126 | ? self::mangleName( $value[ApiResult::META_INDEXED_TAG_NAME], $preserveKeys ) |
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127 | : '_v'; |
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128 | $bcBools = isset( $value[ApiResult::META_BC_BOOLS] ) |
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129 | ? $value[ApiResult::META_BC_BOOLS] |
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130 | : []; |
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131 | $indexSubelements = isset( $value[ApiResult::META_TYPE] ) |
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132 | ? $value[ApiResult::META_TYPE] !== 'array' |
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133 | : false; |
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134 | |||
135 | $content = null; |
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136 | $subelements = []; |
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137 | $indexedSubelements = []; |
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138 | foreach ( $value as $k => $v ) { |
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139 | if ( ApiResult::isMetadataKey( $k ) && !in_array( $k, $preserveKeys, true ) ) { |
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140 | continue; |
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141 | } |
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142 | |||
143 | $oldv = $v; |
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144 | if ( is_bool( $v ) && !in_array( $k, $bcBools, true ) ) { |
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145 | $v = $v ? 'true' : 'false'; |
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146 | } |
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147 | |||
148 | if ( $name !== null && $k === $contentKey ) { |
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149 | $content = $v; |
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150 | } elseif ( is_int( $k ) ) { |
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151 | $indexedSubelements[$k] = $v; |
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152 | } elseif ( is_array( $v ) || is_object( $v ) ) { |
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153 | $subelements[self::mangleName( $k, $preserveKeys )] = $v; |
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154 | } elseif ( in_array( $k, $subelementKeys, true ) || $name === null ) { |
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155 | $subelements[self::mangleName( $k, $preserveKeys )] = [ |
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156 | 'content' => $v, |
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157 | ApiResult::META_CONTENT => 'content', |
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158 | ApiResult::META_TYPE => 'assoc', |
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159 | ]; |
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160 | } elseif ( is_bool( $oldv ) ) { |
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161 | if ( $oldv ) { |
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162 | $attributes[self::mangleName( $k, $preserveKeys )] = ''; |
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163 | } |
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164 | } elseif ( $v !== null ) { |
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165 | $attributes[self::mangleName( $k, $preserveKeys )] = $v; |
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166 | } |
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167 | } |
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168 | |||
169 | if ( $content !== null ) { |
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170 | if ( $subelements || $indexedSubelements ) { |
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171 | $subelements[self::mangleName( $contentKey, $preserveKeys )] = [ |
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172 | 'content' => $content, |
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173 | ApiResult::META_CONTENT => 'content', |
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174 | ApiResult::META_TYPE => 'assoc', |
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175 | ]; |
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176 | $content = null; |
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177 | } elseif ( is_scalar( $content ) ) { |
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178 | // Add xml:space="preserve" to the element so XML parsers |
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179 | // will leave whitespace in the content alone |
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180 | $attributes += [ 'xml:space' => 'preserve' ]; |
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181 | } |
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182 | } |
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183 | |||
184 | if ( $content !== null ) { |
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185 | if ( is_scalar( $content ) ) { |
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186 | $retval .= $indstr . Xml::element( $name, $attributes, $content ); |
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187 | } else { |
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188 | if ( $name !== null ) { |
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189 | $retval .= $indstr . Xml::element( $name, $attributes, null ); |
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190 | } |
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191 | $retval .= static::recXmlPrint( null, $content, $indent ); |
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192 | if ( $name !== null ) { |
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193 | $retval .= $indstr . Xml::closeElement( $name ); |
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194 | } |
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195 | } |
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196 | } elseif ( !$indexedSubelements && !$subelements ) { |
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197 | if ( $name !== null ) { |
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198 | $retval .= $indstr . Xml::element( $name, $attributes ); |
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199 | } |
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200 | } else { |
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201 | if ( $name !== null ) { |
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202 | $retval .= $indstr . Xml::element( $name, $attributes, null ); |
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203 | } |
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204 | foreach ( $subelements as $k => $v ) { |
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205 | $retval .= static::recXmlPrint( $k, $v, $indent ); |
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206 | } |
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207 | foreach ( $indexedSubelements as $k => $v ) { |
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208 | $retval .= static::recXmlPrint( $indexedTagName, $v, $indent, |
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209 | $indexSubelements ? [ '_idx' => $k ] : [] |
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210 | ); |
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211 | } |
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212 | if ( $name !== null ) { |
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213 | $retval .= $indstr . Xml::closeElement( $name ); |
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214 | } |
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215 | } |
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216 | } else { |
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217 | // to make sure null value doesn't produce unclosed element, |
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218 | // which is what Xml::element( $name, null, null ) returns |
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219 | if ( $value === null ) { |
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220 | $retval .= $indstr . Xml::element( $name, $attributes ); |
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221 | } else { |
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222 | $retval .= $indstr . Xml::element( $name, $attributes, $value ); |
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223 | } |
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224 | } |
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225 | |||
226 | return $retval; |
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227 | } |
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228 | |||
229 | /** |
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230 | * Mangle XML-invalid names to be valid in XML |
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231 | * @param string $name |
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232 | * @param array $preserveKeys Names to not mangle |
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233 | * @return string Mangled name |
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234 | */ |
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235 | private static function mangleName( $name, $preserveKeys = [] ) { |
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236 | static $nsc = null, $nc = null; |
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237 | |||
238 | if ( in_array( $name, $preserveKeys, true ) ) { |
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239 | return $name; |
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240 | } |
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241 | |||
242 | if ( $name === '' ) { |
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243 | return '_'; |
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244 | } |
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245 | |||
246 | if ( $nsc === null ) { |
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247 | // Note we omit ':' from $nsc and $nc because it's reserved for XML |
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248 | // namespacing, and we omit '_' from $nsc (but not $nc) because we |
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249 | // reserve it. |
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250 | $nsc = 'A-Za-z\x{C0}-\x{D6}\x{D8}-\x{F6}\x{F8}-\x{2FF}\x{370}-\x{37D}\x{37F}-\x{1FFF}' . |
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251 | '\x{200C}-\x{200D}\x{2070}-\x{218F}\x{2C00}-\x{2FEF}\x{3001}-\x{D7FF}' . |
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252 | '\x{F900}-\x{FDCF}\x{FDF0}-\x{FFFD}\x{10000}-\x{EFFFF}'; |
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253 | $nc = $nsc . '_\-.0-9\x{B7}\x{300}-\x{36F}\x{203F}-\x{2040}'; |
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254 | } |
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255 | |||
256 | if ( preg_match( "/^[$nsc][$nc]*$/uS", $name ) ) { |
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257 | return $name; |
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258 | } |
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259 | |||
260 | return '_' . preg_replace_callback( |
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261 | "/[^$nc]/uS", |
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262 | function ( $m ) { |
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263 | return sprintf( '.%X.', UtfNormal\Utils::utf8ToCodepoint( $m[0] ) ); |
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264 | }, |
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265 | str_replace( '.', '.2E.', $name ) |
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266 | ); |
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267 | } |
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268 | |||
269 | protected function addXslt() { |
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270 | $nt = Title::newFromText( $this->mXslt ); |
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271 | if ( is_null( $nt ) || !$nt->exists() ) { |
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272 | $this->setWarning( 'Invalid or non-existent stylesheet specified' ); |
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273 | |||
274 | return; |
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275 | } |
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276 | if ( $nt->getNamespace() != NS_MEDIAWIKI ) { |
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277 | $this->setWarning( 'Stylesheet should be in the MediaWiki namespace.' ); |
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278 | |||
279 | return; |
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280 | } |
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281 | if ( substr( $nt->getText(), -4 ) !== '.xsl' ) { |
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282 | $this->setWarning( 'Stylesheet should have .xsl extension.' ); |
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283 | |||
284 | return; |
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285 | } |
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286 | $this->printText( '<?xml-stylesheet href="' . |
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287 | htmlspecialchars( $nt->getLocalURL( 'action=raw' ) ) . '" type="text/xsl" ?>' ); |
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288 | } |
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289 | |||
290 | public function getAllowedParams() { |
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291 | return parent::getAllowedParams() + [ |
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292 | 'xslt' => [ |
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293 | ApiBase::PARAM_HELP_MSG => 'apihelp-xml-param-xslt', |
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294 | ], |
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295 | 'includexmlnamespace' => [ |
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296 | ApiBase::PARAM_DFLT => false, |
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297 | ApiBase::PARAM_HELP_MSG => 'apihelp-xml-param-includexmlnamespace', |
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298 | ], |
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299 | ]; |
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300 | } |
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301 | } |
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302 |
This check looks for function or method calls that always return null and whose return value is assigned to a variable.
The method
getObject()
can return nothing but null, so it makes no sense to assign that value to a variable.The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes.