1 | <?php
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2 |
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3 | /**
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4 | * Bart Nagel <[email protected]>
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5 | *
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6 | * AFRepo top-level class to slot in with the Greenstone extension framework
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7 | *
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8 | * The audio is expected to be in subdirectories of the 'audio-files' directory, and
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9 | * for example purposes can be named in such a way that the example
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10 | * PathClassifier classifier can get meanining from it.
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11 | */
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12 |
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13 | class AFRepo extends AFRepoBase {
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14 | private $allfiles;
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15 |
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16 | public function AFRepo()
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17 | {
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18 | $this->audio_files_dir = "audio-files";
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19 | $this->af_prefix = getcwd() . "/" . $this->audio_files_dir;
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20 | }
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21 |
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22 | public function getName() {
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23 | return "Salami 4Store audio repository";
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24 | }
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25 |
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26 | public function getURIPrefix() {
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27 | return "@afrepo-http-prefix@/afrepo/";
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28 | }
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29 |
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30 | /* Done this way, can talk to the 4store server directly
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31 | rather than relying on proxying through the PHP-based 'afrepo' server */
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32 | public function getTrippleStoreURIPrefix() {
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33 | return "@afrepo-http-prefix@/4store/";
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34 | }
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35 |
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36 | public function getSparqlEndpoint() {
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37 | return $this->getTrippleStoreURIPrefix() . "sparql/";
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38 | }
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39 |
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40 | public function getDataEndpoint() {
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41 | return $this->getTrippleStoreURIPrefix() . "data/";
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42 | }
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43 |
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44 | /**
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45 | * getAudioPath
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46 | * Return the path to the audio links in this repository (without a trailing
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47 | * slash)
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48 | */
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49 | public function getAudioPath() {
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50 | return realpath("audio-ids");
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51 | }
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52 |
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53 |
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54 | protected function remove_audio_files_prefix($full_filepath) {
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55 | # echo "full filepath = " . $full_filepath . "\n";
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56 | # echo "af prefix = " . $this->af_prefix . "\n";
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57 |
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58 | $af_prefix_len = strlen($this->af_prefix);
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59 | $filepath = $full_filepath;
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60 |
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61 | if (substr($filepath, 0, $af_prefix_len) == $this->af_prefix) {
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62 | $filepath = substr($filepath, $af_prefix_len);
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63 | }
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64 |
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65 | # echo "** filepath = " . $filepath . "\n";
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66 |
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67 | return $filepath;
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68 | }
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69 |
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70 |
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71 | /**
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72 | * fileInRepo
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73 | * Return true if the audiofile with the given path (canonical or symlink)
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74 | * is in the repository or false if not
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75 | */
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76 | public function fileInRepo($full_filepath) {
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77 | $realpath = realpath($full_filepath);
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78 | if ($realpath === false) {
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79 | trigger_error("file '$filepath' does not exist on disk or is a broken symlink", E_USER_WARNING);
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80 | return false;
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81 | }
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82 |
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83 | return array_key_exists($full_filepath, $this->getAllFiles());
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84 | }
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85 |
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86 |
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87 | /**
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88 | * filePathToId
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89 | * Return the ID of the audiofile with the given path (which can be
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90 | * canonical or a symlink)
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91 | */
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92 | public function filePathToId($full_filepath) {
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93 | if (!$this->fileInRepo($full_filepath)) {
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94 | throw new Exception("file with path '$filepath' is not in the repository");
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95 | }
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96 |
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97 | $hash_filepath = "salami:/" . $this->remove_audio_files_prefix($full_filepath);
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98 |
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99 | ## echo "Hashing on: " . $hash_filepath . "\n";
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100 |
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101 | $id = md5($hash_filepath);
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102 | return $id;
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103 | }
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104 |
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105 |
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106 |
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107 | // recursive method to delete things from the links directory according to the
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108 | // options
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109 | function getAllCollectionFilesRec($collection, $path) {
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110 |
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111 | echo "Processing directory: " . $path . "\n";
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112 |
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113 | $dir = dir($path);
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114 |
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115 | while (($entry = $dir->read()) !== false) {
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116 |
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117 | if ($entry == "." || $entry == "..") {
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118 | continue;
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119 | }
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120 |
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121 | $fullpath = $path . "/" . $entry;
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122 |
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123 | $isdir = false;
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124 | if (is_link($fullpath)) {
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125 |
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126 | $realpath = readlink($fullpath);
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127 |
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128 | // follow potential chain of sym-links
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129 | while (is_link($realpath)) {
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130 | $realpath = readlink($realpath);
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131 | }
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132 |
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133 | $isdir = is_dir($realpath);
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134 | }
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135 | else {
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136 | $isdir = is_dir($fullpath);
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137 | }
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138 |
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139 |
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140 | if ($isdir) {
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141 |
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142 | $this->getAllCollectionFilesRec($collection,$fullpath);
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143 | }
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144 | else {
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145 | // assume it is a file
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146 | ## echo "Adding file: " . $fullpath . "\n";
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147 | $this->allfiles[$fullpath] = true;
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148 | }
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149 | }
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150 |
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151 | $dir->close();
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152 |
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153 | }
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154 |
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155 |
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156 | public function getAllFiles()
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157 | {
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158 | if (!is_null($this->allfiles)) {
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159 | return $this->allfiles;
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160 | }
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161 |
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162 | $this->allfiles = array();
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163 |
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164 | ## $path = realpath($this->audio_files_dir);
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165 | $path = $this->af_prefix;
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166 | $dir = dir($path);
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167 |
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168 | while (($file = $dir->read()) !== false) {
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169 |
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170 | if ($file[0] == ".") {
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171 | // skip all dot files and dirs
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172 | continue;
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173 | }
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174 |
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175 | $fullpath = $path . "/" . $file;
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176 |
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177 | $isdir = false;
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178 | if (is_link($fullpath)) {
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179 |
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180 | $realpath = readlink($fullpath);
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181 |
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182 | // follow potential chain of sym-links
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183 | while (is_link($realpath)) {
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184 | $realpath = readlink($realpath);
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185 | }
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186 |
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187 | $isdir = is_dir($realpath);
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188 | }
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189 | else {
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190 | $isdir = is_dir($fullpath);
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191 | }
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192 |
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193 | if ($isdir) {
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194 |
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195 | // recursively work through each collection directory
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196 | $this->getAllCollectionFilesRec($file, $fullpath);
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197 | }
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198 | }
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199 |
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200 | $dir->close();
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201 |
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202 | return $this->allfiles;
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203 | }
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204 |
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205 |
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206 | public function getAllFilesOLD() {
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207 | if (!is_null($this->allfiles))
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208 | return $this->allfiles;
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209 |
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210 | $this->allfiles = array();
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211 | $path = realpath("audio-files");
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212 | $dir = dir($path);
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213 | while (($file = $dir->read()) !== false) {
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214 | if ($file[0] != "." && is_dir($path . "/" . $file)) {
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215 | $subdir = dir($path . "/" . $file);
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216 | while (($subfile = $subdir->read()) !== false) {
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217 | if ($subfile[0] != "." && is_file($path . "/" . $file . "/" . $subfile))
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218 | $this->allfiles[$path . "/" . $file . "/" . $subfile] = true;
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219 | }
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220 | $subdir->close();
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221 | }
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222 | }
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223 | $dir->close();
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224 |
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225 | return $this->allfiles;
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226 | }
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227 |
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228 | public function getSongFiles($id) {
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229 | $filepath = $this->idToLinkPath($id);
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230 | $origfilepath = realpath($filepath);
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231 |
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232 | if ($origfilepath === false)
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233 | return array();
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234 |
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235 | // is it a clip?
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236 | if (preg_match('%\.clip\..{1,4}$%', $origfilepath)) {
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237 | // does full version exist?
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238 | $fullpath = preg_replace('%\.clip%', "", $origfilepath);
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239 | if (file_exists($fullpath))
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240 | return array($fullpath, $origfilepath);
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241 | return array($origfilepath);
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242 | }
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243 |
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244 | // it's a full song. does clip exist?
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245 | $clippath = preg_replace('%(\..{1,4})$%', '.clip\1', $origfilepath);
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246 | if (file_exists($clippath))
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247 | return array($origfilepath, $clippath);
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248 | return array($origfilepath);
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249 | }
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250 |
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251 | public function haveMetadataPermission() {
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252 | return true;
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253 | }
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254 |
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255 | public function haveAudioPermission() {
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256 | return ipInRange($_SERVER["REMOTE_ADDR"], "127.0.0.0/8");
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257 | }
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258 |
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259 | public function getMBID($id) {
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260 | $classifiers = array(
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261 | new TagClassifier(),
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262 | new EchonestClassifier(),
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263 | new PathClassifier(),
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264 | );
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265 | foreach ($classifiers as $classifier)
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266 | if ($classifier->available() && $classifier->hasMBID($id))
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267 | return $classifier->getMBID($id);
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268 | return null;
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269 | }
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270 | }
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271 |
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272 | ?>
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