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<?
/**
* File IO functions
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
*/
require_once("inc/common.php");
require_once("inc/parser.php");
/**
* Returns the parsed text from the given sourcefile. Uses cache
* if exists. Creates it if not.
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function io_cacheParse($file){
global $conf;
global $CACHEGROUP;
global $parser; //we read parser options
$parsed = '';
$cache = $conf['datadir'].'/.cache/';
$cache .= md5($file.$_SERVER['HTTP_HOST'].$_SERVER['SERVER_PORT'].$CACHEGROUP);
$purge = $conf['datadir'].'/.cache/purgefile';
// check if cache can be used
$cachetime = @filemtime($cache);
if( @file_exists($cache) // does the cachefile exist
&& @file_exists($file) // and does the source exist
&& !isset($_REQUEST['purge']) // no purge param was set
&& filesize($cache) // and contains the cachefile any data
&& ((time() - $cachetime) < $conf['cachetime']) // and is cachefile young enough
&& ($cachetime > filemtime($file)) // and newer than the source
&& ($cachetime > @filemtime($purge)) // and newer than the purgefile
&& ($cachetime > filemtime('conf/dokuwiki.php')) // and newer than the config file
&& ($cachetime > @filemtime('conf/local.php')) // and newer than the local config file
&& ($cachetime > filemtime('inc/parser.php')) // and newer than the parser
&& ($cachetime > filemtime('inc/format.php'))) // and newer than the formating functions
{
$parsed = io_readFile($cache); //give back cache
$parsed .= "\n<!-- cachefile $cache used -->\n";
}elseif(@file_exists($file)){
$parsed = parse(io_readFile($file)); //sets global parseroptions
if($parser['cache']){
io_saveFile($cache,$parsed); //save cachefile
$parsed .= "\n<!-- no cachefile used, but created -->\n";
}else{
@unlink($cache); //try to delete cachefile
$parsed .= "\n<!-- no cachefile used, caching forbidden -->\n";
}
}
return $parsed;
}
/**
* Returns content of $file as cleaned string.
*
* Uses gzip if extension is .gz
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function io_readFile($file){
$ret = '';
if(@file_exists($file)){
if(substr($file,-3) == '.gz'){
$ret = join('',gzfile($file));
}else{
$ret = join('',file($file));
}
}
return cleanText($ret);
}
/**
* Saves $content to $file.
*
* Uses gzip if extension is .gz
*
* @author Andreas Gohr <andi@splitbrain.org>
* @return bool true on success
*/
function io_saveFile($file,$content){
io_makeFileDir($file);
if(substr($file,-3) == '.gz'){
$fh = @gzopen($file,'wb9');
if(!$fh){
msg("Writing $file failed",-1);
return false;
}
gzwrite($fh, $content);
gzclose($fh);
}else{
$fh = @fopen($file,'wb');
if(!$fh){
msg("Writing $file failed",-1);
return false;
}
fwrite($fh, $content);
fclose($fh);
}
return true;
}
/**
* Create the directory needed for the given file
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function io_makeFileDir($file){
global $conf;
$dir = dirname($file);
umask($conf['dmask']);
if(!is_dir($dir)){
io_mkdir_p($dir) || msg("Creating directory $dir failed",-1);
}
umask($conf['umask']);
}
/**
* Creates a directory hierachy.
*
* @link http://www.php.net/manual/en/function.mkdir.php
* @author <saint@corenova.com>
*/
function io_mkdir_p($target){
if (is_dir($target)||empty($target)) return 1; // best case check first
if (@file_exists($target) && !is_dir($target)) return 0;
if (io_mkdir_p(substr($target,0,strrpos($target,'/'))))
return @mkdir($target,0777); // crawl back up & create dir tree
return 0;
}
/**
* Runs an external command and returns it's output as string
*
* @author Harry Brueckner <harry_b@eml.cc>
* @author Andreas Gohr <andi@splitbrain.org>
*/
function io_runcmd($cmd){
$fh = popen($cmd, "r");
if(!$fh) return false;
$ret = '';
while (!feof($fh)) {
$ret .= fread($fh, 8192);
}
pclose($fh);
return $ret;
}
?>
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