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<?php
/**
* Configuration Class and generic setting classes
*
* @author Chris Smith <chris@jalakai.co.uk>
* @author Ben Coburn <btcoburn@silicodon.net>
*/
if (!class_exists('configuration')) {
class configuration {
var $_name = 'conf'; // name of the config variable found in the files (overridden by $config['varname'])
var $_format = 'php'; // format of the config file, supported formats - php (overridden by $config['format'])
var $_heading = ''; // heading string written at top of config file - don't include comment indicators
var $_loaded = false; // set to true after configuration files are loaded
var $_metadata = array(); // holds metadata describing the settings
var $setting = array(); // array of setting objects
var $locked = false; // configuration is considered locked if it can't be updated
// filenames, these will be eval()'d prior to use so maintain any constants in output
var $_default_file = '';
var $_local_file = '';
var $_protected_file = '';
/**
* constructor
*/
function configuration($datafile) {
global $conf;
if (!@file_exists($datafile)) {
msg('No configuration metadata found at - '.htmlspecialchars($datafile),-1);
return;
}
include($datafile);
if (isset($config['varname'])) $this->_name = $config['varname'];
if (isset($config['format'])) $this->_format = $config['format'];
if (isset($config['heading'])) $this->_heading = $config['heading'];
if (isset($file['default'])) $this->_default_file = $file['default'];
if (isset($file['local'])) $this->_local_file = $file['local'];
if (isset($file['protected'])) $this->_protected_file = $file['protected'];
$this->locked = $this->_is_locked();
$this->_metadata = array_merge($meta, $this->get_plugintpl_metadata($conf['template']));
$this->retrieve_settings();
}
function retrieve_settings() {
global $conf;
$no_default_check = array('setting_fieldset', 'setting_undefined', 'setting_no_class');
if (!$this->_loaded) {
$default = array_merge($this->_read_config($this->_default_file), $this->get_plugintpl_default($conf['template']));
$local = $this->_read_config($this->_local_file);
$protected = $this->_read_config($this->_protected_file);
$keys = array_merge(array_keys($this->_metadata),array_keys($default), array_keys($local), array_keys($protected));
$keys = array_unique($keys);
foreach ($keys as $key) {
if (isset($this->_metadata[$key])) {
$class = $this->_metadata[$key][0];
$class = ($class && class_exists('setting_'.$class)) ? 'setting_'.$class : 'setting';
if ($class=='setting') {
$this->setting[] = new setting_no_class($key,$param);
}
$param = $this->_metadata[$key];
array_shift($param);
} else {
$class = 'setting_undefined';
$param = NULL;
}
if (!in_array($class, $no_default_check) && !isset($default[$key])) {
$this->setting[] = new setting_no_default($key,$param);
}
$this->setting[$key] = new $class($key,$param);
$this->setting[$key]->initialize($default[$key],$local[$key],$protected[$key]);
}
$this->_loaded = true;
}
}
function save_settings($id, $header='', $backup=true) {
if ($this->locked) return false;
$file = eval('return '.$this->_local_file.';');
// backup current file (remove any existing backup)
if (@file_exists($file) && $backup) {
if (@file_exists($file.'.bak')) @unlink($file.'.bak');
if (!io_rename($file, $file.'.bak')) return false;
}
if (!$fh = @fopen($file, 'wb')) {
io_rename($file.'.bak', $file); // problem opening, restore the backup
return false;
}
if (empty($header)) $header = $this->_heading;
$out = $this->_out_header($id,$header);
foreach ($this->setting as $setting) {
$out .= $setting->out($this->_name, $this->_format);
}
$out .= $this->_out_footer();
@fwrite($fh, $out);
fclose($fh);
return true;
}
/**
* return an array of config settings
*/
function _read_config($file) {
if (!$file) return array();
$config = array();
$file = eval('return '.$file.';');
if ($this->_format == 'php') {
if(@file_exists($file)){
$contents = @php_strip_whitespace($file);
}else{
$contents = '';
}
$pattern = '/\$'.$this->_name.'\[[\'"]([^=]+)[\'"]\] ?= ?(.*?);(?=[^;]*(?:\$'.$this->_name.'|@include|$))/s';
$matches=array();
preg_match_all($pattern,$contents,$matches,PREG_SET_ORDER);
for ($i=0; $i<count($matches); $i++) {
// correct issues with the incoming data
// FIXME ... for now merge multi-dimensional array indices using ____
$key = preg_replace('/.\]\[./',CM_KEYMARKER,$matches[$i][1]);
// remove quotes from quoted strings & unescape escaped data
$value = preg_replace('/^(\'|")(.*)(?<!\\\\)\1$/s','$2',$matches[$i][2]);
$value = strtr($value, array('\\\\'=>'\\','\\\''=>'\'','\\"'=>'"'));
$config[$key] = $value;
}
}
return $config;
}
function _out_header($id, $header) {
$out = '';
if ($this->_format == 'php') {
$out .= '<'.'?php'."\n".
"/*\n".
" * ".$header." \n".
" * Auto-generated by ".$id." plugin \n".
" * Run for user: ".$_SERVER['REMOTE_USER']."\n".
" * Date: ".date('r')."\n".
" */\n\n";
}
return $out;
}
function _out_footer() {
$out = '';
if ($this->_format == 'php') {
if ($this->_protected_file) {
$out .= "\n@include(".$this->_protected_file.");\n";
}
$out .= "\n// end auto-generated content\n";
}
return $out;
}
// configuration is considered locked if there is no local settings filename
// or the directory its in is not writable or the file exists and is not writable
function _is_locked() {
if (!$this->_local_file) return true;
$local = eval('return '.$this->_local_file.';');
if (!is_writable(dirname($local))) return true;
if (@file_exists($local) && !is_writable($local)) return true;
return false;
}
/**
* not used ... conf's contents are an array!
* reduce any multidimensional settings to one dimension using CM_KEYMARKER
*/
function _flatten($conf,$prefix='') {
$out = array();
foreach($conf as $key => $value) {
if (!is_array($value)) {
$out[$prefix.$key] = $value;
continue;
}
$tmp = $this->_flatten($value,$prefix.$key.CM_KEYMARKER);
$out = array_merge($out,$tmp);
}
return $out;
}
/**
* load metadata for plugin and template settings
*/
function get_plugintpl_metadata($tpl){
$file = '/conf/metadata.php';
$class = '/conf/settings.class.php';
$metadata = array();
if ($dh = opendir(DOKU_PLUGIN)) {
while (false !== ($plugin = readdir($dh))) {
if ($plugin == '.' || $plugin == '..' || $plugin == 'tmp' || $plugin == 'config') continue;
if (is_file(DOKU_PLUGIN.$plugin)) continue;
if (@file_exists(DOKU_PLUGIN.$plugin.$file)){
$meta = array();
@include(DOKU_PLUGIN.$plugin.$file);
@include(DOKU_PLUGIN.$plugin.$class);
if (!empty($meta)) {
$metadata['plugin'.CM_KEYMARKER.$plugin.CM_KEYMARKER.'plugin_settings_name'] = array('fieldset');
}
foreach ($meta as $key => $value){
if ($value[0]=='fieldset') { continue; } //plugins only get one fieldset
$metadata['plugin'.CM_KEYMARKER.$plugin.CM_KEYMARKER.$key] = $value;
}
}
}
closedir($dh);
}
// the same for the active template
if (@file_exists(DOKU_TPLINC.$file)){
$meta = array();
@include(DOKU_TPLINC.$file);
@include(DOKU_TPLINC.$class);
if (!empty($meta)) {
$metadata['tpl'.CM_KEYMARKER.$tpl.CM_KEYMARKER.'template_settings_name'] = array('fieldset');
}
foreach ($meta as $key => $value){
if ($value[0]=='fieldset') { continue; } //template only gets one fieldset
$metadata['tpl'.CM_KEYMARKER.$tpl.CM_KEYMARKER.$key] = $value;
}
}
return $metadata;
}
/**
* load default settings for plugins and templates
*/
function get_plugintpl_default($tpl){
$file = '/conf/default.php';
$default = array();
if ($dh = opendir(DOKU_PLUGIN)) {
while (false !== ($plugin = readdir($dh))) {
if (@file_exists(DOKU_PLUGIN.$plugin.$file)){
$conf = array();
@include(DOKU_PLUGIN.$plugin.$file);
foreach ($conf as $key => $value){
$default['plugin'.CM_KEYMARKER.$plugin.CM_KEYMARKER.$key] = $value;
}
}
}
closedir($dh);
}
// the same for the active template
if (@file_exists(DOKU_TPLINC.$file)){
$conf = array();
@include(DOKU_TPLINC.$file);
foreach ($conf as $key => $value){
$default['tpl'.CM_KEYMARKER.$tpl.CM_KEYMARKER.$key] = $value;
}
}
return $default;
}
}
}
if (!class_exists('setting')) {
class setting {
var $_key = '';
var $_default = NULL;
var $_local = NULL;
var $_protected = NULL;
var $_pattern = '';
var $_error = false; // only used by those classes which error check
var $_input = NULL; // only used by those classes which error check
function setting($key, $params=NULL) {
$this->_key = $key;
if (is_array($params)) {
foreach($params as $property => $value) {
$this->$property = $value;
}
}
}
/**
* receives current values for the setting $key
*/
function initialize($default, $local, $protected) {
if (isset($default)) $this->_default = $default;
if (isset($local)) $this->_local = $local;
if (isset($protected)) $this->_protected = $protected;
}
/**
* update setting with user provided value $input
* if value fails error check, save it
*
* @return true if changed, false otherwise (incl. on error)
*/
function update($input) {
if (is_null($input)) return false;
if ($this->is_protected()) return false;
$value = is_null($this->_local) ? $this->_default : $this->_local;
if ($value == $input) return false;
if ($this->_pattern && !preg_match($this->_pattern,$input)) {
$this->_error = true;
$this->_input = $input;
return false;
}
$this->_local = $input;
return true;
}
/**
* @return array(string $label_html, string $input_html)
*/
function html(&$plugin, $echo=false) {
$value = '';
$disable = '';
if ($this->is_protected()) {
$value = $this->_protected;
$disable = 'disabled="disabled"';
} else {
if ($echo && $this->_error) {
$value = $this->_input;
} else {
$value = is_null($this->_local) ? $this->_default : $this->_local;
}
}
$key = htmlspecialchars($this->_key);
$value = htmlspecialchars($value);
$label = '<label for="config___'.$key.'">'.$this->prompt($plugin).'</label>';
$input = '<textarea rows="3" cols="40" id="config___'.$key.'" name="config['.$key.']" class="edit" '.$disable.'>'.$value.'</textarea>';
return array($label,$input);
}
/**
* generate string to save setting value to file according to $fmt
*/
function out($var, $fmt='php') {
if ($this->is_protected()) return '';
if (is_null($this->_local) || ($this->_default == $this->_local)) return '';
$out = '';
if ($fmt=='php') {
// translation string needs to be improved FIXME
$tr = array("\n"=>'\n', "\r"=>'\r', "\t"=>'\t', "\\" => '\\\\', "'" => '\\\'');
$tr = array("\\" => '\\\\', "'" => '\\\'');
$out = '$'.$var."['".$this->_out_key()."'] = '".strtr($this->_local, $tr)."';\n";
}
return $out;
}
function prompt(&$plugin) {
$prompt = $plugin->getLang($this->_key);
if (!$prompt) $prompt = htmlspecialchars(str_replace(array('____','_'),' ',$this->_key));
return $prompt;
}
function is_protected() { return !is_null($this->_protected); }
function is_default() { return !$this->is_protected() && is_null($this->_local); }
function error() { return $this->_error; }
function _out_key($pretty=false) {
if($pretty){
return str_replace(CM_KEYMARKER,"»",$this->_key);
}else{
return str_replace(CM_KEYMARKER,"']['",$this->_key);
}
}
}
}
if (!class_exists('setting_string')) {
class setting_string extends setting {
function html(&$plugin, $echo=false) {
$value = '';
$disable = '';
if ($this->is_protected()) {
$value = $this->_protected;
$disable = 'disabled="disabled"';
} else {
if ($echo && $this->_error) {
$value = $this->_input;
} else {
$value = is_null($this->_local) ? $this->_default : $this->_local;
}
}
$key = htmlspecialchars($this->_key);
$value = htmlspecialchars($value);
$label = '<label for="config___'.$key.'">'.$this->prompt($plugin).'</label>';
$input = '<input id="config___'.$key.'" name="config['.$key.']" type="text" class="edit" value="'.$value.'" '.$disable.'/>';
return array($label,$input);
}
}
}
if (!class_exists('setting_password')) {
class setting_password extends setting_string {
function update($input) {
if ($this->is_protected()) return false;
if (!$input) return false;
if ($this->_pattern && !preg_match($this->_pattern,$input)) {
$this->_error = true;
$this->_input = $input;
return false;
}
$this->_local = $input;
return true;
}
function html(&$plugin, $echo=false) {
$value = '';
$disable = $this->is_protected() ? 'disabled="disabled"' : '';
$key = htmlspecialchars($this->_key);
$label = '<label for="config___'.$key.'">'.$this->prompt($plugin).'</label>';
$input = '<input id="config___'.$key.'" name="config['.$key.']" type="password" class="edit" value="" '.$disable.'/>';
return array($label,$input);
}
}
}
if (!class_exists('setting_email')) {
class setting_email extends setting_string {
var $_pattern = '#^\s*(([a-z0-9\-_.]+?)@([\w\-]+\.([\w\-\.]+\.)*[\w]+)(,\s*([a-z0-9\-_.]+?)@([\w\-]+\.([\w\-\.]+\.)*[\w]+))*)?\s*$#i';
}
}
if (!class_exists('setting_richemail')) {
class setting_richemail extends setting_email {
/**
* update setting with user provided value $input
* if value fails error check, save it
*
* @return true if changed, false otherwise (incl. on error)
*/
function update($input) {
if (is_null($input)) return false;
if ($this->is_protected()) return false;
$value = is_null($this->_local) ? $this->_default : $this->_local;
if ($value == $input) return false;
// replace variables with pseudo values
$test = $input;
$test = str_replace('@USER@','joe',$test);
$test = str_replace('@NAME@','Joe Schmoe',$test);
$test = str_replace('@MAIL@','joe@example.com',$test);
// now only check the address part
if(preg_match('#(.*?)<(.*?)>#',$test,$matches)){
$text = trim($matches[1]);
$addr = $matches[2];
}else{
$addr = $test;
}
if ($this->_pattern && !preg_match($this->_pattern,$addr)) {
$this->_error = true;
$this->_input = $input;
return false;
}
$this->_local = $input;
return true;
}
}
}
if (!class_exists('setting_numeric')) {
class setting_numeric extends setting_string {
// This allows for many PHP syntax errors...
// var $_pattern = '/^[-+\/*0-9 ]*$/';
// much more restrictive, but should eliminate syntax errors.
var $_pattern = '/^[-]?[0-9]+(?:[-+*][0-9]+)*$/';
//FIXME - make the numeric error checking better.
function out($var, $fmt='php') {
if ($this->is_protected()) return '';
if (is_null($this->_local) || ($this->_default == $this->_local)) return '';
$out = '';
if ($fmt=='php') {
$out .= '$'.$var."['".$this->_out_key()."'] = ".$this->_local.";\n";
}
return $out;
}
}
}
if (!class_exists('setting_numericopt')) {
class setting_numericopt extends setting_numeric {
// just allow an empty config
var $_pattern = '/^(|[-]?[0-9]+(?:[-+*][0-9]+)*)$/';
}
}
if (!class_exists('setting_onoff')) {
class setting_onoff extends setting_numeric {
function html(&$plugin) {
$value = '';
$disable = '';
if ($this->is_protected()) {
$value = $this->_protected;
$disable = ' disabled="disabled"';
} else {
$value = is_null($this->_local) ? $this->_default : $this->_local;
}
$key = htmlspecialchars($this->_key);
$checked = ($value) ? ' checked="checked"' : '';
$label = '<label for="config___'.$key.'">'.$this->prompt($plugin).'</label>';
$input = '<div class="input"><input id="config___'.$key.'" name="config['.$key.']" type="checkbox" class="checkbox" value="1"'.$checked.$disable.'/></div>';
return array($label,$input);
}
function update($input) {
if ($this->is_protected()) return false;
$input = ($input) ? 1 : 0;
$value = is_null($this->_local) ? $this->_default : $this->_local;
if ($value == $input) return false;
$this->_local = $input;
return true;
}
}
}
if (!class_exists('setting_multichoice')) {
class setting_multichoice extends setting_string {
var $_choices = array();
function html(&$plugin) {
$value = '';
$disable = '';
$nochoice = '';
if ($this->is_protected()) {
$value = $this->_protected;
$disable = ' disabled="disabled"';
} else {
$value = is_null($this->_local) ? $this->_default : $this->_local;
}
// ensure current value is included
if (!in_array($value, $this->_choices)) {
$this->_choices[] = $value;
}
// disable if no other choices
if (!$this->is_protected() && count($this->_choices) <= 1) {
$disable = ' disabled="disabled"';
$nochoice = $plugin->getLang('nochoice');
}
$key = htmlspecialchars($this->_key);
$label = '<label for="config___'.$key.'">'.$this->prompt($plugin).'</label>';
$input = "<div class=\"input\">\n";
$input .= '<select class="edit" id="config___'.$key.'" name="config['.$key.']"'.$disable.'>'."\n";
foreach ($this->_choices as $choice) {
$selected = ($value == $choice) ? ' selected="selected"' : '';
$option = $plugin->getLang($this->_key.'_o_'.$choice);
if (!$option) $option = $choice;
$choice = htmlspecialchars($choice);
$option = htmlspecialchars($option);
$input .= ' <option value="'.$choice.'"'.$selected.' >'.$option.'</option>'."\n";
}
$input .= "</select> $nochoice \n";
$input .= "</div>\n";
return array($label,$input);
}
function update($input) {
if (is_null($input)) return false;
if ($this->is_protected()) return false;
$value = is_null($this->_local) ? $this->_default : $this->_local;
if ($value == $input) return false;
if (!in_array($input, $this->_choices)) return false;
$this->_local = $input;
return true;
}
}
}
if (!class_exists('setting_dirchoice')) {
class setting_dirchoice extends setting_multichoice {
var $_dir = '';
function initialize($default,$local,$protected) {
// populate $this->_choices with a list of directories
$list = array();
if ($dh = @opendir($this->_dir)) {
while (false !== ($entry = readdir($dh))) {
if ($entry == '.' || $entry == '..') continue;
if ($this->_pattern && !preg_match($this->_pattern,$entry)) continue;
$file = (is_link($this->_dir.$entry)) ? readlink($this->_dir.$entry) : $entry;
if (is_dir($this->_dir.$file)) $list[] = $entry;
}
closedir($dh);
}
sort($list);
$this->_choices = $list;
parent::initialize($default,$local,$protected);
}
}
}
if (!class_exists('setting_hidden')) {
class setting_hidden extends setting {
// Used to explicitly ignore a setting in the configuration manager.
}
}
if (!class_exists('setting_fieldset')) {
class setting_fieldset extends setting {
// A do-nothing class used to detect the 'fieldset' type.
// Used to start a new settings "display-group".
}
}
if (!class_exists('setting_undefined')) {
class setting_undefined extends setting_hidden {
// A do-nothing class used to detect settings with no metadata entry.
// Used internaly to hide undefined settings, and generate the undefined settings list.
}
}
if (!class_exists('setting_no_class')) {
class setting_no_class extends setting_undefined {
// A do-nothing class used to detect settings with a missing setting class.
// Used internaly to hide undefined settings, and generate the undefined settings list.
}
}
if (!class_exists('setting_no_default')) {
class setting_no_default extends setting_undefined {
// A do-nothing class used to detect settings with no default value.
// Used internaly to hide undefined settings, and generate the undefined settings list.
}
}
if (!class_exists('setting_multicheckbox')) {
class setting_multicheckbox extends setting_string {
var $_choices = array();
var $_combine = array();
function update($input) {
if ($this->is_protected()) return false;
// split any combined values + convert from array to comma separated string
$input = ($input) ? $input : array();
$input = $this->_array2str($input);
$value = is_null($this->_local) ? $this->_default : $this->_local;
if ($value == $input) return false;
if ($this->_pattern && !preg_match($this->_pattern,$input)) {
$this->_error = true;
$this->_input = $input;
return false;
}
$this->_local = $input;
return true;
}
function html(&$plugin, $echo=false) {
$value = '';
$disable = '';
if ($this->is_protected()) {
$value = $this->_protected;
$disable = 'disabled="disabled"';
} else {
if ($echo && $this->_error) {
$value = $this->_input;
} else {
$value = is_null($this->_local) ? $this->_default : $this->_local;
}
}
$key = htmlspecialchars($this->_key);
// convert from comma separated list into array + combine complimentary actions
$value = $this->_str2array($value);
$default = $this->_str2array($this->_default);
$input = '';
foreach ($this->_choices as $choice) {
$idx = array_search($choice, $value);
$idx_default = array_search($choice,$default);
$checked = ($idx !== false) ? 'checked="checked"' : '';
// ideally this would be handled using a second class of "default", however IE6 does not
// correctly support CSS selectors referencing multiple class names on the same element
// (e.g. .default.selection).
$class = (($idx !== false) == (false !== $idx_default)) ? " selectiondefault" : "";
$prompt = ($plugin->getLang($this->_key.'_'.$choice) ?
$plugin->getLang($this->_key.'_'.$choice) : htmlspecialchars($choice));
$input .= '<div class="selection'.$class.'">'."\n";
$input .= '<label for="config___'.$key.'_'.$choice.'">'.$prompt."</label>\n";
$input .= '<input id="config___'.$key.'_'.$choice.'" name="config['.$key.'][]" type="checkbox" class="checkbox" value="'.$choice.'" '.$disable.' '.$checked."/>\n";
$input .= "</div>\n";
// remove this action from the disabledactions array
if ($idx !== false) unset($value[$idx]);
if ($idx_default !== false) unset($default[$idx_default]);
}
// handle any remaining values
$other = join(',',$value);
$class = (count($default == count($value)) && (count($value) == count(array_intersect($value,$default)))) ?
" selectiondefault" : "";
$input .= '<div class="other'.$class.'">'."\n";
$input .= '<label for="config___'.$key.'_other">'.$plugin->getLang($key.'_other')."</label>\n";
$input .= '<input id="config___'.$key.'_other" name="config['.$key.'][other]" type="text" class="edit" value="'.htmlspecialchars($other).'" '.$disable." />\n";
$input .= "</div>\n";
// $label = '<label for="config___'.$key.'">'.$this->prompt($plugin).'</label>';
$label = $this->prompt($plugin);
return array($label,$input);
}
/**
* convert comma separated list to an array and combine any complimentary values
*/
function _str2array($str) {
$array = explode(',',$str);
if (!empty($this->_combine)) {
foreach ($this->_combine as $key => $combinators) {
$idx = array();
foreach ($combinators as $val) {
if (($idx[] = array_search($val, $array)) === false) break;
}
if (count($idx) && $idx[count($idx)-1] !== false) {
foreach ($idx as $i) unset($array[$i]);
$array[] = $key;
}
}
}
return $array;
}
/**
* convert array of values + other back to a comma separated list, incl. splitting any combined values
*/
function _array2str($input) {
// handle other
$other = trim($input['other']);
$other = !empty($other) ? explode(',',str_replace(' ','',$input['other'])) : array();
unset($input['other']);
$array = array_unique(array_merge($input, $other));
// deconstruct any combinations
if (!empty($this->_combine)) {
foreach ($this->_combine as $key => $combinators) {
$idx = array_search($key,$array);
if ($idx !== false) {
unset($array[$idx]);
$array = array_merge($array, $combinators);
}
}
}
return join(',',array_unique($array));
}
}
}
/**
* Provide php_strip_whitespace (php5 function) functionality
*
* @author Chris Smith <chris@jalakai.co.uk>
*/
if (!function_exists('php_strip_whitespace')) {
if (function_exists('token_get_all')) {
if (!defined('T_ML_COMMENT')) {
define('T_ML_COMMENT', T_COMMENT);
} else {
define('T_DOC_COMMENT', T_ML_COMMENT);
}
/**
* modified from original
* source Google Groups, php.general, by David Otton
*/
function php_strip_whitespace($file) {
if (!@is_readable($file)) return '';
$in = join('',@file($file));
$out = '';
$tokens = token_get_all($in);
foreach ($tokens as $token) {
if (is_string ($token)) {
$out .= $token;
} else {
list ($id, $text) = $token;
switch ($id) {
case T_COMMENT : // fall thru
case T_ML_COMMENT : // fall thru
case T_DOC_COMMENT : // fall thru
case T_WHITESPACE :
break;
default : $out .= $text; break;
}
}
}
return ($out);
}
} else {
function is_whitespace($c) { return (strpos("\t\n\r ",$c) !== false); }
function is_quote($c) { return (strpos("\"'",$c) !== false); }
function is_escaped($s,$i) {
$idx = $i-1;
while(($idx>=0) && ($s{$idx} == '\\')) $idx--;
return (($i - $idx + 1) % 2);
}
function is_commentopen($str, $i) {
if ($str{$i} == '#') return "\n";
if ($str{$i} == '/') {
if ($str{$i+1} == '/') return "\n";
if ($str{$i+1} == '*') return "*/";
}
return false;
}
function php_strip_whitespace($file) {
if (!@is_readable($file)) return '';
$contents = join('',@file($file));
$out = '';
$state = 0;
for ($i=0; $i<strlen($contents); $i++) {
if (!$state && is_whitespace($contents{$i})) continue;
if (!$state && ($c_close = is_commentopen($contents, $i))) {
$c_open_len = ($contents{$i} == '/') ? 2 : 1;
$i = strpos($contents, $c_close, $i+$c_open_len)+strlen($c_close)-1;
continue;
}
$out .= $contents{$i};
if (is_quote($contents{$i})) {
if (($state == $contents{$i}) && !is_escaped($contents, $i)) { $state = 0; continue; }
if (!$state) {$state = $contents{$i}; continue; }
}
}
return $out;
}
}
}
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