[27290] | 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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[27317] | 8 | * The audio is expected to be in subdirectories of the 'audio-files' directory, and
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[27290] | 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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[27317] | 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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[27290] | 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 $this->getTrippleStoreURIPrefix() . "data/";
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| 42 | }
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| 43 |
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[27317] | 44 | /**
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| 45 | * getAudioPath
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| 46 | * Return the path to the audio links in this repository (without a trailing
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| 47 | * slash)
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| 48 | */
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| 49 | public function getAudioPath() {
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| 50 | return realpath("audio-ids");
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| 51 | }
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| 52 |
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| 53 |
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| 54 | protected function remove_audio_files_prefix($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, $this->getAllFiles());
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| 84 | }
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| 85 |
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| 86 |
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| 87 | /**
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[27339] | 88 | * idToCanonicalPath
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| 89 | * Return the path to the canonical file with the given ID
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| 90 | */
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| 91 | public function idToCanonicalPath($id) {
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| 92 | return readlink($this->idToLinkPath($id));
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| 93 | }
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| 94 |
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| 95 |
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| 96 | /**
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[27317] | 97 | * filePathToId
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| 98 | * Return the ID of the audiofile with the given path (which can be
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| 99 | * canonical or a symlink)
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| 100 | */
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| 101 | public function filePathToId($full_filepath) {
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| 102 | if (!$this->fileInRepo($full_filepath)) {
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| 103 | throw new Exception("file with path '$filepath' is not in the repository");
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| 104 | }
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| 105 |
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| 106 | $hash_filepath = "salami:/" . $this->remove_audio_files_prefix($full_filepath);
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| 107 |
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| 108 | ## echo "Hashing on: " . $hash_filepath . "\n";
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| 109 |
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| 110 | $id = md5($hash_filepath);
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| 111 | return $id;
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| 112 | }
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| 113 |
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| 114 |
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| 115 |
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| 116 | // recursive method to delete things from the links directory according to the
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| 117 | // options
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| 118 | function getAllCollectionFilesRec($collection, $path) {
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| 119 |
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| 120 | echo "Processing directory: " . $path . "\n";
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| 121 |
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| 122 | $dir = dir($path);
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| 123 |
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| 124 | while (($entry = $dir->read()) !== false) {
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| 125 |
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| 126 | if ($entry == "." || $entry == "..") {
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| 127 | continue;
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| 128 | }
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| 129 |
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| 130 | $fullpath = $path . "/" . $entry;
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| 131 |
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| 132 | $isdir = false;
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| 133 | if (is_link($fullpath)) {
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| 134 |
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| 135 | $realpath = readlink($fullpath);
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| 136 |
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| 137 | // follow potential chain of sym-links
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| 138 | while (is_link($realpath)) {
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| 139 | $realpath = readlink($realpath);
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| 140 | }
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| 141 |
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| 142 | $isdir = is_dir($realpath);
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| 143 | }
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| 144 | else {
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| 145 | $isdir = is_dir($fullpath);
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| 146 | }
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| 147 |
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| 148 |
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| 149 | if ($isdir) {
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| 150 |
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| 151 | $this->getAllCollectionFilesRec($collection,$fullpath);
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| 152 | }
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| 153 | else {
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| 154 | // assume it is a file
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| 155 | ## echo "Adding file: " . $fullpath . "\n";
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| 156 | $this->allfiles[$fullpath] = true;
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| 157 | }
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| 158 | }
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| 159 |
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| 160 | $dir->close();
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| 161 |
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| 162 | }
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| 163 |
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| 164 |
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| 165 | public function getAllFiles()
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| 166 | {
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| 167 | if (!is_null($this->allfiles)) {
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| 168 | return $this->allfiles;
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| 169 | }
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| 170 |
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| 171 | $this->allfiles = array();
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| 172 |
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| 173 | ## $path = realpath($this->audio_files_dir);
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| 174 | $path = $this->af_prefix;
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| 175 | $dir = dir($path);
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| 176 |
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| 177 | while (($file = $dir->read()) !== false) {
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| 178 |
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| 179 | if ($file[0] == ".") {
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| 180 | // skip all dot files and dirs
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| 181 | continue;
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| 182 | }
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| 183 |
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| 184 | $fullpath = $path . "/" . $file;
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| 185 |
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| 186 | $isdir = false;
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| 187 | if (is_link($fullpath)) {
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| 188 |
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| 189 | $realpath = readlink($fullpath);
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| 190 |
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| 191 | // follow potential chain of sym-links
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| 192 | while (is_link($realpath)) {
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| 193 | $realpath = readlink($realpath);
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| 194 | }
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| 195 |
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| 196 | $isdir = is_dir($realpath);
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| 197 | }
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| 198 | else {
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| 199 | $isdir = is_dir($fullpath);
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| 200 | }
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| 201 |
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| 202 | if ($isdir) {
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| 203 |
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| 204 | // recursively work through each collection directory
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| 205 | $this->getAllCollectionFilesRec($file, $fullpath);
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| 206 | }
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| 207 | }
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| 208 |
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| 209 | $dir->close();
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| 210 |
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| 211 | return $this->allfiles;
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| 212 | }
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| 213 |
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| 214 |
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| 215 | public function getAllFilesOLD() {
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[27290] | 216 | if (!is_null($this->allfiles))
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| 217 | return $this->allfiles;
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| 218 |
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| 219 | $this->allfiles = array();
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[27317] | 220 | $path = realpath("audio-files");
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[27290] | 221 | $dir = dir($path);
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| 222 | while (($file = $dir->read()) !== false) {
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| 223 | if ($file[0] != "." && is_dir($path . "/" . $file)) {
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| 224 | $subdir = dir($path . "/" . $file);
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| 225 | while (($subfile = $subdir->read()) !== false) {
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| 226 | if ($subfile[0] != "." && is_file($path . "/" . $file . "/" . $subfile))
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| 227 | $this->allfiles[$path . "/" . $file . "/" . $subfile] = true;
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| 228 | }
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| 229 | $subdir->close();
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| 230 | }
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| 231 | }
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| 232 | $dir->close();
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| 233 |
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| 234 | return $this->allfiles;
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| 235 | }
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| 236 |
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[27339] | 237 | public function getSongFilesOLD($id) {
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[27290] | 238 | $filepath = $this->idToLinkPath($id);
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| 239 | $origfilepath = realpath($filepath);
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| 240 |
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| 241 | if ($origfilepath === false)
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| 242 | return array();
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| 243 |
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| 244 | // is it a clip?
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| 245 | if (preg_match('%\.clip\..{1,4}$%', $origfilepath)) {
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| 246 | // does full version exist?
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| 247 | $fullpath = preg_replace('%\.clip%', "", $origfilepath);
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| 248 | if (file_exists($fullpath))
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| 249 | return array($fullpath, $origfilepath);
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| 250 | return array($origfilepath);
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| 251 | }
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| 252 |
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| 253 | // it's a full song. does clip exist?
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| 254 | $clippath = preg_replace('%(\..{1,4})$%', '.clip\1', $origfilepath);
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| 255 | if (file_exists($clippath))
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| 256 | return array($origfilepath, $clippath);
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| 257 | return array($origfilepath);
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| 258 | }
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| 259 |
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| 260 | public function haveMetadataPermission() {
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| 261 | return true;
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| 262 | }
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| 263 |
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| 264 | public function haveAudioPermission() {
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| 265 | return ipInRange($_SERVER["REMOTE_ADDR"], "127.0.0.0/8");
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| 266 | }
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| 267 |
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| 268 | public function getMBID($id) {
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| 269 | $classifiers = array(
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| 270 | new TagClassifier(),
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| 271 | new EchonestClassifier(),
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| 272 | new PathClassifier(),
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| 273 | );
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[27339] | 274 |
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| 275 | foreach ($classifiers as $classifier)
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[27290] | 276 | if ($classifier->available() && $classifier->hasMBID($id))
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| 277 | return $classifier->getMBID($id);
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| 278 | return null;
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| 279 | }
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| 280 | }
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| 281 |
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| 282 | ?>
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