| 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 | return "@public-facing-afrepo-http-prefix@";
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| 29 | }
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| 30 |
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| 31 | /* Done this way, can talk to the 4store server directly
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| 32 | rather than relying on proxying through the PHP-based 'afrepo' server */
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| 33 | public function getTrippleStoreLocalURIPrefix() {
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| 34 | //return "@afrepo-http-prefix@/4store/";
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| 35 | return "@4store-http-prefix@/";
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| 36 | }
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| 37 |
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| 38 | public function getTrippleStoreURIPrefix() {
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| 39 | return "@public-facing-4store-http-prefix@";
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| 40 | }
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| 41 |
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| 42 | public function getSparqlEndpoint() {
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| 43 | return $this->getTrippleStoreURIPrefix() . "sparql/";
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| 44 | }
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| 45 |
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| 46 | public function getDataEndpoint() {
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| 47 | return $this->getTrippleStoreLocalURIPrefix() . "data/";
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| 48 | }
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| 49 |
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| 50 | /**
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| 51 | * getAudioPath
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| 52 | * Return the path to the audio links in this repository (without a trailing
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| 53 | * slash)
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| 54 | */
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| 55 | public function getAudioPath() {
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| 56 | return realpath("audio-ids");
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| 57 | }
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| 58 |
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| 59 |
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| 60 | public function remove_audio_files_prefix($full_filepath) {
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| 61 | # echo "full filepath = " . $full_filepath . "\n";
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| 62 | # echo "af prefix = " . $this->af_prefix . "\n";
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| 63 |
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| 64 | $af_prefix_len = strlen($this->af_prefix);
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| 65 | $filepath = $full_filepath;
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| 66 |
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| 67 | if (substr($filepath, 0, $af_prefix_len) == $this->af_prefix) {
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| 68 | $filepath = substr($filepath, $af_prefix_len);
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| 69 | }
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| 70 |
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| 71 | # echo "** filepath = " . $filepath . "\n";
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| 72 |
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| 73 | return $filepath;
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| 74 | }
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| 75 |
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| 76 |
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| 77 | /**
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| 78 | * fileInRepo
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| 79 | * Return true if the audiofile with the given path (canonical or symlink)
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| 80 | * is in the repository or false if not
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| 81 | */
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| 82 | public function fileInRepo($full_filepath) {
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| 83 | $realpath = realpath($full_filepath);
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| 84 | if ($realpath === false) {
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| 85 | trigger_error("file '$filepath' does not exist on disk or is a broken symlink", E_USER_WARNING);
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| 86 | return false;
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| 87 | }
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| 88 |
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| 89 | return array_key_exists($full_filepath, $this->getAllFiles());
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| 90 | }
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| 91 |
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| 92 |
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| 93 | /**
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| 94 | * idToCanonicalPath
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| 95 | * Return the path to the canonical file with the given ID
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| 96 | */
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| 97 | public function idToCanonicalPath($id) {
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| 98 | return readlink($this->idToLinkPath($id));
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| 99 | }
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| 100 |
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| 101 |
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| 102 | /**
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| 103 | * filePathToId
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| 104 | * Return the ID of the audiofile with the given path (which can be
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| 105 | * canonical or a symlink)
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| 106 | */
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| 107 | public function filePathToId($full_filepath) {
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| 108 | if (!$this->fileInRepo($full_filepath)) {
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| 109 | throw new Exception("file with path '$filepath' is not in the repository");
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| 110 | }
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| 111 |
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| 112 | $hash_filepath = "salami:/" . $this->remove_audio_files_prefix($full_filepath);
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| 113 |
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| 114 | ## echo "Hashing on: " . $hash_filepath . "\n";
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| 115 |
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| 116 | $id = md5($hash_filepath);
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| 117 | return $id;
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| 118 | }
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| 119 |
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| 120 |
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| 121 |
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| 122 | // recursive method to delete things from the links directory according to the
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| 123 | // options
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| 124 | function getAllCollectionFilesRec($collection, $path) {
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| 125 |
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| 126 | echo "Processing directory: " . $path . "\n";
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| 127 |
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| 128 | $dir = dir($path);
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| 129 |
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| 130 | while (($entry = $dir->read()) !== false) {
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| 131 |
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| 132 | if ($entry == "." || $entry == "..") {
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| 133 | continue;
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| 134 | }
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| 135 |
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| 136 | $fullpath = $path . "/" . $entry;
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| 137 |
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| 138 | $isdir = false;
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| 139 | if (is_link($fullpath)) {
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| 140 |
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| 141 | $realpath = readlink($fullpath);
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| 142 |
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| 143 | // follow potential chain of sym-links
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| 144 | while (is_link($realpath)) {
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| 145 | $realpath = readlink($realpath);
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| 146 | }
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| 147 |
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| 148 | $isdir = is_dir($realpath);
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| 149 | }
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| 150 | else {
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| 151 | $isdir = is_dir($fullpath);
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| 152 | }
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| 153 |
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| 154 |
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| 155 | if ($isdir) {
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| 156 |
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| 157 | $this->getAllCollectionFilesRec($collection,$fullpath);
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| 158 | }
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| 159 | else {
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| 160 | // assume it is a file
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| 161 | ## echo "Adding file: " . $fullpath . "\n";
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| 162 | $this->allfiles[$fullpath] = true;
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| 163 | }
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| 164 | }
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| 165 |
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| 166 | $dir->close();
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| 167 |
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| 168 | }
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| 169 |
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| 170 |
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| 171 | public function getAllFiles()
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| 172 | {
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| 173 | if (!is_null($this->allfiles)) {
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| 174 | return $this->allfiles;
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| 175 | }
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| 176 |
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| 177 | $this->allfiles = array();
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| 178 |
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| 179 | ## $path = realpath($this->audio_files_dir);
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| 180 | $path = $this->af_prefix;
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| 181 | $dir = dir($path);
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| 182 |
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| 183 | while (($file = $dir->read()) !== false) {
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| 184 |
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| 185 | if ($file[0] == ".") {
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| 186 | // skip all dot files and dirs
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| 187 | continue;
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| 188 | }
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| 189 |
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| 190 | $fullpath = $path . "/" . $file;
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| 191 |
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| 192 | $isdir = false;
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| 193 | if (is_link($fullpath)) {
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| 194 |
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| 195 | $realpath = readlink($fullpath);
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| 196 |
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| 197 | // follow potential chain of sym-links
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| 198 | while (is_link($realpath)) {
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| 199 | $realpath = readlink($realpath);
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| 200 | }
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| 201 |
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| 202 | $isdir = is_dir($realpath);
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| 203 | }
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| 204 | else {
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| 205 | $isdir = is_dir($fullpath);
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| 206 | }
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| 207 |
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| 208 | if ($isdir) {
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| 209 |
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| 210 | // recursively work through each collection directory
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| 211 | $this->getAllCollectionFilesRec($file, $fullpath);
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| 212 | }
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| 213 | }
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| 214 |
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| 215 | $dir->close();
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| 216 |
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| 217 | return $this->allfiles;
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| 218 | }
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| 219 |
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| 220 |
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| 221 | public function getAllFilesOLD() {
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| 222 | if (!is_null($this->allfiles))
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| 223 | return $this->allfiles;
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| 224 |
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| 225 | $this->allfiles = array();
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| 226 | $path = realpath("audio-files");
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| 227 | $dir = dir($path);
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| 228 | while (($file = $dir->read()) !== false) {
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| 229 | if ($file[0] != "." && is_dir($path . "/" . $file)) {
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| 230 | $subdir = dir($path . "/" . $file);
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| 231 | while (($subfile = $subdir->read()) !== false) {
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| 232 | if ($subfile[0] != "." && is_file($path . "/" . $file . "/" . $subfile))
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| 233 | $this->allfiles[$path . "/" . $file . "/" . $subfile] = true;
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| 234 | }
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| 235 | $subdir->close();
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| 236 | }
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| 237 | }
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| 238 | $dir->close();
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| 239 |
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| 240 | return $this->allfiles;
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| 241 | }
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| 242 |
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| 243 | public function getSongFilesOLD($id) {
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| 244 | $filepath = $this->idToLinkPath($id);
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| 245 | $origfilepath = realpath($filepath);
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| 246 |
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| 247 | if ($origfilepath === false)
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| 248 | return array();
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| 249 |
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| 250 | // is it a clip?
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| 251 | if (preg_match('%\.clip\..{1,4}$%', $origfilepath)) {
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| 252 | // does full version exist?
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| 253 | $fullpath = preg_replace('%\.clip%', "", $origfilepath);
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| 254 | if (file_exists($fullpath))
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| 255 | return array($fullpath, $origfilepath);
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| 256 | return array($origfilepath);
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| 257 | }
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| 258 |
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| 259 | // it's a full song. does clip exist?
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| 260 | $clippath = preg_replace('%(\..{1,4})$%', '.clip\1', $origfilepath);
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| 261 | if (file_exists($clippath))
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| 262 | return array($origfilepath, $clippath);
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| 263 | return array($origfilepath);
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| 264 | }
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| 265 |
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| 266 | public function haveMetadataPermission() {
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| 267 | return true;
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| 268 | }
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| 269 |
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| 270 | public function haveAudioPermission() {
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| 271 | return ipInRange($_SERVER["REMOTE_ADDR"], "127.0.0.0/8");
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| 272 | }
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| 273 |
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| 274 | public function getMBID($id) {
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| 275 | $classifiers = array(
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| 276 | new TagClassifier(),
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| 277 | new EchoprintClassifier(),
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| 278 | new EchonestClassifier(),
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| 279 | new PathClassifier(),
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| 280 | );
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| 281 |
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| 282 | foreach ($classifiers as $classifier)
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| 283 | if ($classifier->available() && $classifier->hasMBID($id))
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| 284 | return $classifier->getMBID($id);
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| 285 | return null;
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| 286 | }
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| 287 |
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| 288 |
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| 289 |
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| 290 |
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| 291 | /**
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| 292 | * extraTriples
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| 293 | * Return an array of any extra implementation-specific triples should be
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| 294 | * added to the RDF given the ID of an audiofile
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| 295 | *
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| 296 | * This should be an array of triples in Turtle format without the trailing
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| 297 | * dot. (See generateRDF)
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| 298 | * It should return triples about all audiofiles of the same song rather
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| 299 | * than just the one with the ID given.
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| 300 | */
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| 301 | protected function extraTriples($id) {
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| 302 |
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| 303 | $extra_triples = array();
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| 304 |
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| 305 |
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| 306 | // analyze the file, get some metadata
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| 307 | $structured_metadata = $this->getStructuredMetadata($id);
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| 308 |
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| 309 | if ($structured_metadata !== false) {
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| 310 |
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| 311 | }
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| 312 |
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| 313 | // loop through the audiofiles for this tune
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| 314 | /* foreach ($ids as $key => $fileid) { */
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| 315 |
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| 316 | /* // some identifiers */
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| 317 | /* $audiofile = "repo:$fileid"; */
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| 318 | /* $digitalsignal = "repo:$fileid#DigitalSignal"; */
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| 319 |
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| 320 | /* // triples about the document */
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| 321 | /* $triples[] = "{$audiofile}_ a foaf:Document; foaf:primaryTopic $audiofile"; */
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| 322 |
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| 323 | /* // this is a mo:AudioFile, which is a mo:MusicalItem */
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| 324 | /* $triples[] = "$audiofile a mo:AudioFile"; */
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| 325 |
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| 326 | /* // this encodes a corresponding digital signal */
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| 327 | /* $triples[] = "$audiofile mo:encodes $digitalsignal"; */
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| 328 |
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| 329 | /* // our digital signal is a mo:DigitalSignal (which is a subclass of */
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| 330 | /* // mo:Signal, which is a subclass of mo:MusicalExpression) */
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| 331 | /* $triples[] = "$digitalsignal a mo:DigitalSignal"; */
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| 332 |
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| 333 | /* // different logic depending whether this audiofile is the preferred */
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| 334 | /* // one or not */
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| 335 | /* if ($key == 0) { */
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| 336 | /* // preferred -- if we have an MBID this Signal is derived from */
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| 337 | /* // the original (that at Musicbrainz) */
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| 338 | /* if (!is_null($mbid)) */
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| 339 | /* $triples[] = "$digitalsignal mo:derived_from " . mbidToSignalURI($mbid); */
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| 340 | /* // otherwise we don't assert that it derives from anything */
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| 341 | /* } else { */
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| 342 | /* // non-preferred -- we assert that it is derived from our */
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| 343 | /* // preferred audiofile's Signal */
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| 344 | /* $triples[] = "$digitalsignal mo:derived_from repo:" . $ids[0] . "#DigitalSignal"; */
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| 345 | /* } */
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| 346 |
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| 347 | /* // analyze the file, get some metadata */
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| 348 | /* $filemetadata = $this->getFileMetadata($fileid); */
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| 349 |
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| 350 | /* // mo:AudioFile metadata */
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| 351 | /* if (isset($filemetadata["dataformat"])) */
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| 352 | /* $triples[] = "$audiofile mo:encoding \"" . $filemetadata["dataformat"] */
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| 353 | /* . (isset($filemetadata["bitrate"]) ? " @ " . $filemetadata["bitrate"] . "bps" : "") */
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| 354 | /* . (isset($filemetadata["bitrate_mode"]) ? " " . $filemetadata["bitrate_mode"] : "") */
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| 355 | /* . "\""; */
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| 356 |
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| 357 | /* // mo:DigitalSignal metadata */
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| 358 | /* if (isset($filemetadata["playtime_seconds"])) */
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| 359 | /* $triples[] = "$digitalsignal mo:time [ " */
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| 360 | /* . "a time:Interval; " */
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| 361 | /* . "time:seconds \"" . $filemetadata["playtime_seconds"] . "\"^^xsd:float " */
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| 362 | /* . "]"; */
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| 363 | /* if (isset($filemetadata["channels"])) */
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| 364 | /* $triples[] = "$digitalsignal mo:channels \"" . $filemetadata["channels"] . "\"^^xsd:int"; */
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| 365 | /* if (isset($filemetadata["sample_rate"])) */
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| 366 | /* $triples[] = "$digitalsignal mo:sample_rate \"" . $filemetadata["sample_rate"] . "\"^^xsd:float"; */
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| 367 | /* } */
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| 368 |
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| 369 | return $extra_triples;
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| 370 |
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| 371 |
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| 372 | }
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| 373 |
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| 374 |
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| 375 | /**
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| 376 | * getgetStructuredMetadata
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| 377 | * Return as a hashmap (keyed by algorithm the structured audio data
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| 378 | * from the "big crunch"
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| 379 | */
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| 380 | public function getStructuredMetadata($id) {
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| 381 |
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| 382 | $classifier = new StructuredAudioClassifier();
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| 383 |
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| 384 | if ($classifier->available() && $classifier->hasMetadata($id)) {
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| 385 | return $classifier->loadMetadata($id);
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| 386 | }
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| 387 |
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| 388 | return false;
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| 389 |
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| 390 | }
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| 391 |
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| 392 |
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| 393 | public function attributionToHtmlByAlgorithm() {
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| 394 |
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| 395 | $classifier = new StructuredAudioClassifier();
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| 396 |
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| 397 | $full_dataset_path = getcwd() . "/" . "datasets";
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| 398 |
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| 399 |
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| 400 | $ametadata = $classifier->getAttribution();
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| 401 |
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| 402 | $style = "<style>\n";
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| 403 | $style .= " tr:nth-child(even) {background: #DDD}\n";
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| 404 | $style .= " tr:nth-child(odd) {background: #EEE}\n";
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| 405 | $style .= "</style>\n";
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| 406 |
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| 407 | $html_str = "$style\n<table>";
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| 408 |
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| 409 | foreach ($ametadata as $key => $value) {
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| 410 |
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| 411 | $html_str .= "<tr>";
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| 412 |
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| 413 | $entry = $value;
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| 414 | $title = $entry["title"];
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| 415 | $year = $entry["year"];
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| 416 | $articleUrl = $entry["articleUrl"];
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| 417 | $authorList = $entry["authorList"];
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| 418 | $authors = $entry["authors"];
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| 419 |
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| 420 | $opt_linked_title = $title;
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| 421 |
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| 422 | if ($articleUrl != false) {
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| 423 | $opt_linked_title = "<a href=\"$articleUrl\">$title</a>";
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| 424 | }
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| 425 |
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| 426 | $desc_entry = "<i>$opt_linked_title</i> ($year)<br />\n";
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| 427 |
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| 428 | foreach ($authorList as $author) {
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| 429 | $author_details = $authors[$author];
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| 430 | $organizations = $author_details["organization"];
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| 431 | $email = $author_details["email"];
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| 432 |
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| 433 | $desc_entry .= $author;
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| 434 | if ($email != false) {
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| 435 | $email = str_replace("@"," at ",$email);
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| 436 | $desc_entry .= " (<tt>$email</tt>)";
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| 437 | }
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| 438 |
|
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| 439 | $desc_entry .= "<br />\n";
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| 440 | }
|
|---|
| 441 |
|
|---|
| 442 | $tarfilesize = filesize("$full_dataset_path/$key.tar.gz");
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| 443 |
|
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| 444 | $download_key = "<a href=\"datasets/$key.tar.gz\">Download $key</a> ($tarfilesize bytes)";
|
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| 445 | $html_str .= " <td>$download_key</td><td>$desc_entry</td>\n";
|
|---|
| 446 |
|
|---|
| 447 | $html_str .= "</tr>\n";
|
|---|
| 448 |
|
|---|
| 449 | }
|
|---|
| 450 | $html_str .= "</table>";
|
|---|
| 451 |
|
|---|
| 452 | return $html_str;
|
|---|
| 453 |
|
|---|
| 454 | }
|
|---|
| 455 |
|
|---|
| 456 |
|
|---|
| 457 | public function attributionToHtmlByCollection() {
|
|---|
| 458 |
|
|---|
| 459 | ## $classifier = new StructuredAudioClassifier();
|
|---|
| 460 |
|
|---|
| 461 | $full_dataset_path = getcwd() . "/" . "datasets";
|
|---|
| 462 |
|
|---|
| 463 |
|
|---|
| 464 | $cmetadata = array (
|
|---|
| 465 | "american" => "American",
|
|---|
| 466 | "classical" => "Classical",
|
|---|
| 467 | "coversong" => "Cover Songs",
|
|---|
| 468 | "dram" => "Dram",
|
|---|
| 469 | "ehmann" => "Ehmann",
|
|---|
| 470 | "jamendo" => "Jameno",
|
|---|
| 471 | "latin" => "Latin",
|
|---|
| 472 | "magnatune" => "Magnatune",
|
|---|
| 473 | "mazurkas" => "Mazurkas",
|
|---|
| 474 | "uscrap" => "US Bargin Bin",
|
|---|
| 475 | "uspop" => "US Pop"
|
|---|
| 476 | );
|
|---|
| 477 |
|
|---|
| 478 | $style = "<style>\n";
|
|---|
| 479 | $style .= " tr:nth-child(even) {background: #DDD}\n";
|
|---|
| 480 | $style .= " tr:nth-child(odd) {background: #EEE}\n";
|
|---|
| 481 | $style .= "</style>\n";
|
|---|
| 482 |
|
|---|
| 483 | $html_str = "$style\n<table>";
|
|---|
| 484 |
|
|---|
| 485 | foreach ($cmetadata as $key => $value) {
|
|---|
| 486 |
|
|---|
| 487 | $html_str .= "<tr>";
|
|---|
| 488 |
|
|---|
| 489 | $tarfilesize = filesize("$full_dataset_path/$key.tar.gz");
|
|---|
| 490 |
|
|---|
| 491 | $download_key = "<a href=\"datasets/$key.tar.gz\">Download $value</a> ($tarfilesize bytes)";
|
|---|
| 492 | $html_str .= " <td>$download_key</td>\n";
|
|---|
| 493 |
|
|---|
| 494 | $html_str .= "</tr>\n";
|
|---|
| 495 |
|
|---|
| 496 | }
|
|---|
| 497 | $html_str .= "</table>";
|
|---|
| 498 |
|
|---|
| 499 | return $html_str;
|
|---|
| 500 |
|
|---|
| 501 | }
|
|---|
| 502 |
|
|---|
| 503 |
|
|---|
| 504 | }
|
|---|
| 505 |
|
|---|
| 506 | ?>
|
|---|
