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<?php
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/**
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* Convert bytes to human readable format
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*
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* @param integer bytes Size in bytes to convert
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* @return string
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*/
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function islandora_convert_bytes_to_human_readable($bytes, $precision = 2)
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{
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$kilobyte = 1024;
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$megabyte = $kilobyte * 1024;
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$gigabyte = $megabyte * 1024;
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$terabyte = $gigabyte * 1024;
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if (($bytes >= 0) && ($bytes < $kilobyte)) {
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return $bytes . ' B';
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} elseif (($bytes >= $kilobyte) && ($bytes < $megabyte)) {
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return round($bytes / $kilobyte, $precision) . ' KB';
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} elseif (($bytes >= $megabyte) && ($bytes < $gigabyte)) {
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return round($bytes / $megabyte, $precision) . ' MB';
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} elseif (($bytes >= $gigabyte) && ($bytes < $terabyte)) {
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return round($bytes / $gigabyte, $precision) . ' GB';
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} elseif ($bytes >= $terabyte) {
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return round($bytes / $terabyte, $precision) . ' TB';
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} else {
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return $bytes . ' B';
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}
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}
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function islandora_control_group_to_human_readable($control_group) {
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switch($control_group) {
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case 'M':
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return '<b>M</b>anaged';
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case 'X':
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return 'Inline <b>X</b>ML';
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case 'R':
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return '<b>R</b>edirect';
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case 'E':
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return '<b>E</b>xternally Referenced';
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default:
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return $control_group;
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}
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}
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/**
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* valid pid ??
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* @param type $pid
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* @return boolean
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*/
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function islandora_validate_pid($pid) {
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$valid = FALSE;
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if (strlen(trim($pid)) <= 64 && preg_match('/^([A-Za-z0-9]|-|\.)+:(([A-Za-z0-9])|-|\.|~|_|(%[0-9A-F]{2}))+$/', trim($pid))) {
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$valid = TRUE;
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}
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return $valid;
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}
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/**
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* Valid Dsid ??
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* @param type $dsid
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* @return boolean
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*/
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function islandora_validadte_dsid($dsid) {
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$valid = FALSE;
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if (strlen(trim($dsid)) <= 64 && preg_match('/^[a-zA-Z0-9\_\-\.]+$/', trim($dsid))) {
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$valid = TRUE;
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}
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return $valid;
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}
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