1<?php 2/** 3 * File IO functions 4 * 5 * @license GPL 2 (http://www.gnu.org/licenses/gpl.html) 6 * @author Andreas Gohr <andi@splitbrain.org> 7 */ 8 9 if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../').'/'); 10 require_once(DOKU_INC.'inc/common.php'); 11 require_once(DOKU_INC.'inc/parser.php'); 12 13/** 14 * Returns the parsed text from the given sourcefile. Uses cache 15 * if exists. Creates it if not. 16 * 17 * @author Andreas Gohr <andi@splitbrain.org> 18 */ 19function io_cacheParse($file){ 20 global $conf; 21 global $CACHEGROUP; 22 global $parser; //we read parser options 23 $parsed = ''; 24 $cache = $conf['datadir'].'/.cache/'; 25 $cache .= md5($file.$_SERVER['HTTP_HOST'].$_SERVER['SERVER_PORT'].$CACHEGROUP); 26 $purge = $conf['datadir'].'/.cache/purgefile'; 27 28 // check if cache can be used 29 $cachetime = @filemtime($cache); 30 31 if( @file_exists($cache) // does the cachefile exist 32 && @file_exists($file) // and does the source exist 33 && !isset($_REQUEST['purge']) // no purge param was set 34 && filesize($cache) // and contains the cachefile any data 35 && ((time() - $cachetime) < $conf['cachetime']) // and is cachefile young enough 36 && ($cachetime > filemtime($file)) // and newer than the source 37 && ($cachetime > @filemtime($purge)) // and newer than the purgefile 38 && ($cachetime > filemtime('conf/dokuwiki.php')) // and newer than the config file 39 && ($cachetime > @filemtime('conf/local.php')) // and newer than the local config file 40 && ($cachetime > filemtime('inc/parser.php')) // and newer than the parser 41 && ($cachetime > filemtime('inc/format.php'))) // and newer than the formating functions 42 { 43 $parsed = io_readFile($cache); //give back cache 44 $parsed .= "\n<!-- cachefile $cache used -->\n"; 45 }elseif(@file_exists($file)){ 46 $parsed = parse(io_readFile($file)); //sets global parseroptions 47 if($parser['cache']){ 48 io_saveFile($cache,$parsed); //save cachefile 49 $parsed .= "\n<!-- no cachefile used, but created -->\n"; 50 }else{ 51 @unlink($cache); //try to delete cachefile 52 $parsed .= "\n<!-- no cachefile used, caching forbidden -->\n"; 53 } 54 } 55 56 return $parsed; 57} 58 59/** 60 * Returns content of $file as cleaned string. 61 * 62 * Uses gzip if extension is .gz 63 * 64 * @author Andreas Gohr <andi@splitbrain.org> 65 */ 66function io_readFile($file){ 67 $ret = ''; 68 if(@file_exists($file)){ 69 if(substr($file,-3) == '.gz'){ 70 $ret = join('',gzfile($file)); 71 }else{ 72 $ret = join('',file($file)); 73 } 74 } 75 return cleanText($ret); 76} 77 78/** 79 * Saves $content to $file. 80 * 81 * Uses gzip if extension is .gz 82 * 83 * @author Andreas Gohr <andi@splitbrain.org> 84 * @return bool true on success 85 */ 86function io_saveFile($file,$content){ 87 io_makeFileDir($file); 88 if(substr($file,-3) == '.gz'){ 89 $fh = @gzopen($file,'wb9'); 90 if(!$fh){ 91 msg("Writing $file failed",-1); 92 return false; 93 } 94 gzwrite($fh, $content); 95 gzclose($fh); 96 }else{ 97 $fh = @fopen($file,'wb'); 98 if(!$fh){ 99 msg("Writing $file failed",-1); 100 return false; 101 } 102 fwrite($fh, $content); 103 fclose($fh); 104 } 105 return true; 106} 107 108/** 109 * Create the directory needed for the given file 110 * 111 * @author Andreas Gohr <andi@splitbrain.org> 112 */ 113function io_makeFileDir($file){ 114 global $conf; 115 116 $dir = dirname($file); 117 umask($conf['dmask']); 118 if(!is_dir($dir)){ 119 io_mkdir_p($dir) || msg("Creating directory $dir failed",-1); 120 } 121 umask($conf['umask']); 122} 123 124/** 125 * Creates a directory hierachy. 126 * 127 * @link http://www.php.net/manual/en/function.mkdir.php 128 * @author <saint@corenova.com> 129 */ 130function io_mkdir_p($target){ 131 if (is_dir($target)||empty($target)) return 1; // best case check first 132 if (@file_exists($target) && !is_dir($target)) return 0; 133 if (io_mkdir_p(substr($target,0,strrpos($target,'/')))) 134 return @mkdir($target,0777); // crawl back up & create dir tree 135 return 0; 136} 137 138/** 139 * Runs an external command and returns it's output as string 140 * 141 * @author Harry Brueckner <harry_b@eml.cc> 142 * @author Andreas Gohr <andi@splitbrain.org> 143 */ 144function io_runcmd($cmd){ 145 $fh = popen($cmd, "r"); 146 if(!$fh) return false; 147 $ret = ''; 148 while (!feof($fh)) { 149 $ret .= fread($fh, 8192); 150 } 151 pclose($fh); 152 return $ret; 153} 154 155?> 156