1 | <?php |
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2 | |||
3 | /** |
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4 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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5 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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6 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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7 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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8 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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9 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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10 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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11 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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12 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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13 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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14 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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15 | * |
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16 | * This software consists of voluntary contributions made by many individuals |
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17 | * and is licensed under the LGPL. For more information please see |
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18 | * <http://phing.info>. |
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19 | */ |
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20 | |||
21 | namespace Phing\Filter; |
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22 | |||
23 | use DOMDocument; |
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24 | use Phing\Exception\BuildException; |
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25 | use Phing\Io\File; |
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26 | use Phing\Io\FilterReader; |
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27 | use Phing\Io\IOException; |
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28 | use Phing\Io\Reader; |
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29 | use Phing\Project; |
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30 | |||
31 | /** |
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32 | * Applies Xinclude parsing to incoming text. |
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33 | * |
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34 | * Uses PHP DOM XML support |
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35 | * |
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36 | * @author Bill Karwin <[email protected]> |
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37 | * |
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38 | * @see FilterReader |
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39 | */ |
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40 | class XincludeFilter extends BaseParamFilterReader implements ChainableReader |
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41 | { |
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42 | /** @var File */ |
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43 | private $basedir; |
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44 | |||
45 | /** |
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46 | * @var bool |
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47 | */ |
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48 | private $processed = false; |
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49 | |||
50 | /** |
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51 | * Whether to resolve entities. |
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52 | * |
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53 | * @var bool |
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54 | * |
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55 | * @since 2.4 |
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56 | */ |
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57 | private $resolveExternals = false; |
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58 | |||
59 | /** |
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60 | * Whether to resolve entities. |
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61 | * |
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62 | * @param $resolveExternals |
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63 | * |
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64 | * @since 2.4 |
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65 | */ |
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66 | public function setResolveExternals(bool $resolveExternals) |
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67 | { |
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68 | $this->resolveExternals = $resolveExternals; |
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69 | } |
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70 | |||
71 | /** |
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72 | * @return bool |
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73 | * |
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74 | * @since 2.4 |
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75 | */ |
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76 | public function getResolveExternals() |
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77 | { |
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78 | return $this->resolveExternals; |
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79 | } |
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80 | |||
81 | public function setBasedir(File $dir) |
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82 | { |
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83 | $this->basedir = $dir; |
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84 | } |
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85 | |||
86 | /** |
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87 | * @return File |
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88 | */ |
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89 | public function getBasedir() |
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90 | { |
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91 | return $this->basedir; |
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92 | } |
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93 | |||
94 | /** |
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95 | * Reads stream, applies XSLT and returns resulting stream. |
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96 | * |
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97 | * @param int $len |
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98 | * |
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99 | * @throws IOException |
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100 | * @throws BuildException |
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101 | * |
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102 | * @return string transformed buffer |
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103 | */ |
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104 | public function read($len = null) |
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105 | { |
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106 | if (!class_exists('DOMDocument')) { |
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107 | throw new BuildException('Could not find the DOMDocument class. Make sure PHP has been compiled/configured to support DOM XML.'); |
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108 | } |
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109 | |||
110 | if (true === $this->processed) { |
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111 | return -1; // EOF |
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112 | } |
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113 | |||
114 | // Read XML |
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115 | $_xml = null; |
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116 | while (($data = $this->in->read($len)) !== -1) { |
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117 | $_xml .= $data; |
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118 | } |
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119 | |||
120 | if (null === $_xml) { // EOF? |
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121 | return -1; |
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122 | } |
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123 | |||
124 | if (empty($_xml)) { |
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125 | $this->log('XML file is empty!', Project::MSG_WARN); |
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126 | |||
127 | return ''; |
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128 | } |
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129 | |||
130 | $this->log('Transforming XML ' . $this->in->getResource() . ' using Xinclude ', Project::MSG_VERBOSE); |
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131 | |||
132 | $out = ''; |
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133 | |||
134 | try { |
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135 | $out = $this->process($_xml); |
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136 | $this->processed = true; |
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137 | } catch (IOException $e) { |
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138 | throw new BuildException($e); |
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139 | } |
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140 | |||
141 | return $out; |
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142 | } |
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143 | |||
144 | /** |
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145 | * Creates a new XincludeFilter using the passed in |
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146 | * Reader for instantiation. |
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147 | * |
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148 | * @param Reader A Reader object providing the underlying stream. |
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149 | * Must not be <code>null</code>. |
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150 | * |
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151 | * @return XincludeFilter A new filter based on this configuration, but filtering |
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152 | * the specified reader |
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153 | */ |
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154 | public function chain(Reader $reader): Reader |
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155 | { |
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156 | $newFilter = new self($reader); |
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157 | $newFilter->setProject($this->getProject()); |
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158 | $newFilter->setBasedir($this->getBasedir()); |
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159 | |||
160 | return $newFilter; |
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161 | } |
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162 | |||
163 | /** |
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164 | * Try to process the Xinclude transformation. |
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165 | * |
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166 | * @param string XML to process |
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167 | * @param mixed $xml |
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168 | * |
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169 | * @return string |
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170 | */ |
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171 | protected function process($xml) |
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172 | { |
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173 | if ($this->basedir) { |
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174 | $cwd = getcwd(); |
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175 | chdir($this->basedir); |
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176 | } |
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177 | |||
178 | // Create and setup document. |
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179 | $xmlDom = new DOMDocument(); |
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180 | $xmlDom->resolveExternals = $this->resolveExternals; |
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181 | |||
182 | $xmlDom->loadXML($xml); |
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183 | |||
184 | $xmlDom->xinclude(); |
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185 | |||
186 | if ($this->basedir) { |
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187 | chdir($cwd); |
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188 | } |
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189 | |||
190 | return $xmlDom->saveXML(); |
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191 | } |
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192 | } |
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193 |