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Configurator.php
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Configurator.php
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<?php
/************************************************************
* icarus v1.0-beta -- an IRC framework for PHP *
* Author: rintaun - Matthew J. Lanigan <rintaun@gmail.com> *
* *
* Copyright 2011 Matthew J. Lanigan. *
* See LICENSE file for licensing restrictions *
************************************************************/
if (!defined('_ICARUS_')) die('This script may not be invoked directly.' . "\n");
final class Configurator extends Singleton
{
private $configfile = "";
public $config = array();
private $fd = NULL;
protected function _create($filename = NULL)
{
$logger = Logger::getInstance(NULL);
if (!is_null($filename)) $this->configfile = $filename;
else $this->configfile = $GLOBALS['etcdir'] . 'icarus.conf';
if (!file_exists($this->configfile)) _die("Fatal Error: Configuration file (%s) not found.", $this->configfile);
$this->config = $this->parse($this->configfile);
}
/* parse()
* rewritten from the original!
* Copyright (c) 2004 Matt Lanigan <rintaun@projectxero.net>
* Copyright (c) 2004 Eric Will <rakaur@malkier.net>
* Copyright (c) 2003-2004 shrike development team.
* Copyright (c) 1999-2004 csircd development team.
*/
private function parse($filename)
{
$data = file_get_contents($filename);
$linenumber = 1;
$sectnum = 0;
$curfile = array(
'filename' => trim($filename)
);
for ($c=0; $c < strlen($data); $c++)
{
switch ($data{$c})
{
case '#':
while (($data{$c} != "\n") && (isset($data{$c})))
$c++;
if (!isset($data{$c}))
{
$c--;
continue;
}
break;
case ';':
if (empty($curentry))
{
$this->_warning('%s (line %d): Ignoring extra semicolon', $filename, $linenumber);
break;
}
if (!strcmp($curentry['varname'], "include"))
{
if (empty($curentry['vardata']))
{
$this->_warning('%s (line %d): Ignoring "include": No filename given', $filename, $linenumber);
unset($curentry);
continue;
}
if (strlen($curentry['vardata']) > 255)
$curentry['vardata'] = substr($curentry['vardata'], 0, 254);
$include = $this->parse($curentry['vardata']);
if (!$include)
$this->_warning('%s (line %d): Unable to load "include" file: %s', $filename, $linenumber, $curentry['vardata']);
else
{
if (!empty($cursection))
$lastfile = &$cursection['entries'];
else
$lastfile = &$curfile;
foreach ($include AS $name => $entry)
$lastfile[] = $entry;
}
unset($curentry);
continue;
}
$curentry['varname'] = trim($curentry['varname']);
$curentry['vardata'] = trim($curentry['vardata']);
$curentry['filename'] = $curfile['filename'];
if (!isset($cursection))
$curfile[] = $curentry;
else
$cursection['entries'][] = $curentry;
$lastentry = &$curentry;
unset($curentry);
break;
case '{':
if (empty($curentry))
{
$this->_warning("%s (line %d): No name for section start", $filename, $linenumber);
continue;
}
else if (isset($curentry['entries']))
{
$this->_warning("%s (line %d): Ignoring extra section start", $filename, $linenumber);
continue;
}
if ((isset($cursection)) && ((!isset($cursection['sectnum'])) || (!isset($curentry['sectnum'])) ||
($cursection['sectnum'] != $curentry['sectnum'])))
$curentry['prevlev'] = $cursection;
$curentry['sectlinenum'] = $linenumber;
$cursection = $curentry;
$cursection['sectnum'] = ++$sectnum;
$cursection['entries'] = array();
unset($curentry);
break;
case '}':
if (isset($curentry))
{
$this->_error("%s (line %d): Missing semicolon before close brace", $filename, $linenumber);
unset($curentry);
unset($curfile);
return NULL;
}
else if (empty($cursection))
{
$this->_warning("%s (line %d): Ignoring extra close brace", $filename, $linenumber);
continue;
}
$curentry = $cursection;
if (!empty($cursection['prevlev']))
$cursection = $cursection['prevlev'];
else
unset($cursection);
break;
case '/':
if ($data{$c+1} == '/')
{
$c += 2;
while (($data{$c} != "\n") && (isset($data{$c})))
$c++;
if (!isset($data{$c}))
$c--;
continue;
}
else if ($data{$c+1} == '*')
{
$commentstart = $linenumber;
for ($c += 2; isset($data{$c}); $c++)
{
if (($data{$c} == '*') && ($data{$c+1} == '/'))
{
$c++;
break;
}
else if ($data{$c} == "\n")
$linenumber++;
}
if (!isset($data{$c}))
{
$this->_error("%s (line %d): Comment starting on this line does not end", $filename, $commentstart);
unset($curentry);
unset($curfile);
return NULL;
}
}
break;
case '"':
$start = ++$c;
for (; (isset($data{$c})) && ($data{$c} != '"') && ($data{$c} != "\n"); $c++)
{
if ($data{$c} == "\\")
{
$c++;
continue;
}
}
if ((!isset($data{$c})) || ($data{$c} == "\n"))
{
$this->_error("%s (line %d): Unterminated quote found", $filename, $linenumber);
unset($curentry);
unset($curfile);
return NULL;
}
if (isset($curentry))
{
if (!empty($curentry['vardata']))
$curentry['vardata'] .= substr($data, $start, ($c - $start));
else
$curentry['vardata'] = substr($data, $start, ($c - $start));
}
else
{
$curentry = array();
$curentry['varname'] = substr($data, $start, ($c - $start));
$curentry['varlinenum'] = $linenumber;
}
break;
case "\n":
$linenumber++;
break;
case ' ':
case "\t":
case '=':
case "\r":
break;
default:
if (($data{$c} == '*') && ($data{$c+1} == '/'))
{
$this->_warning("%s (line %d): Ignoring extra end comment", $filename, $linenumber);
$c += 2;
continue;
}
$start = $c;
for (; isset($data{$c}); $c++)
{
if (($data{$c} == "\n") || ($data{$c} == ';') || ($data{$c} == '{'))
break;
if ((empty($curentry['varname'])) && (($data{$c} == ' ') || ($data{$c} == '=')))
break;
}
if (!isset($data{$c}))
{
if (!empty($curentry))
$this->_error("%s (line %d): Unexpected EOF for variable", $filename, $linenumber);
else if (!empty($cursection))
$this->_error("%s (line %d): Unexpected EOF for section", $filename, $linenumber);
else
$this->_error("%s (line %d): Unexpected EOF", $filename, $linenumber);
unset($curentry);
unset($curfile);
return NULL;
}
if (isset($curentry))
{
if (!empty($curentry['vardata']))
$curentry['vardata'] .= substr($data, $start, ($c - $start));
else
$curentry['vardata'] = substr($data, $start, ($c - $start));
}
else
{
$curentry = array();
$curentry['varname'] = substr($data, $start, ($c - $start));
$curentry['varlinenum'] = $linenumber;
}
if (($data{$c} == ';') || ($data{$c} == "\n") || ($data{$c} == '{'))
$c--;
break;
} /* switch */
} /* for */
if (!empty($curentry))
{
$this->_error("%s (line %d): Unexpected EOF for variable", $filename, $curentry['varlinenum']);
unset($curentry);
unset($curfile);
return NULL;
}
else if (isset($cursection))
{
$this->_error("%s (line %d): Unexpected EOF for section", $filename, $curentry['sectlinenum']);
unset($curentry);
unset($curfile);
return NULL;
}
return $this->_build($curfile);
}
private function _build($data)
{
if (!is_array($data)) return $data;
$build = array();
foreach ($data AS $key => $value)
{
if (($key != 0) && (in_array($key, array('filename', 'varlinenum', 'sectlinenum', 'sectnum')))) continue;
if (!empty($value['varname']))
{
// we don't care about case for section and variable names
$value['varname'] = strtolower($value['varname']);
if (isset($value['entries']))
{
if (!empty($value['vardata']))
$build[$value['varname']][$value['vardata']] = $this->_build($value['entries']);
else
$build[$value['varname']][] = $this->_build($value['entries']);
}
else if (!empty($value['vardata']))
$build[$value['varname']] = $value['vardata'];
}
}
return $build;
}
private function _warning($format)
{
$args = func_get_args();
array_shift($args);
_log(L_WARNING, "Configurator: %s", vsprintf($format, $args));
}
private function _error($format)
{
$args = func_get_args();
array_shift($args);
_log(L_ERROR, "Configurator: %s", vsprintf($format, $args));
}
public function rehash()
{
_log(L_INFO, "Rehashing %s", $this->configfile);
$this->config = $this->parse($this->configfile);
}
private function save()
{
_log(L_DEBUG, "Configurator->save(): not implemented yet");
}
protected function _destroy()
{
$this->save();
}
}