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<?php
/*
** Copyright (C) 1995-2007 by the ITools Authors.
** This file is part of ITools - the Internet Tools Library
**
** ITools is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 3 of the License, or
** (at your option) any later version.
**
** ITools is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
**
** debug.class - Debug Functionality for ITools
*/
/**
* Debug functions
*/
class it_debug
{
var $level;
/**
* Constructor
* @param $level Debug level. All debug() calls with a level <= $level are shown.
*/
function __construct($level=0)
{
$this->level = isset($GLOBALS['debug_level']) ? $GLOBALS['debug_level'] : $level;
}
/**
* Output a message if the global debug level is higher or the same as $level
* @param $text Message to display
* @param $level Debug level
*/
function debug($text, $level = 0)
{
if ($this->level >= $level)
{
echo (isset($_SERVER['REMOTE_ADDR']) ? nl2br("$level $text\n") : "$level $text")."\n";
flush();
}
}
/**
* Get source line of grandparent calling this function
* @param $stacksoffs go up an extra $stacksoffs levels
*/
static function srcline($stackoffs = 0)
{
$stack = debug_backtrace(@constant('DEBUG_BACKTRACE_IGNORE_ARGS'));
$line = $stack[1 + $stackoffs]['line'];
$file = $stack[1 + $stackoffs]['file'];
if (!isset($GLOBALS['it_debug::dump source'][$file]))
$GLOBALS['it_debug::dump source'][$file] = @it::file($file);
return $GLOBALS['it_debug::dump source'][$file][$line-1];
}
/**
* Backend for functions D(), ED() and EDX() in functions.php
* @param Origargs Array containing original arguments do ED() etc
* @return String representation of dump
*/
static function dump($args)
{
$htmlspecialchars = array("&" => "&", '<' => "<", '>' => ">");
if ((preg_match('/csv|txt|gif|jpg/', $_SERVER['PHP_SELF']) || preg_grep('#text/(calendar|css|javascript|json|plain|rfc822|xml)|application/#', headers_list()) || $GLOBALS['debug_edplain']) && !$GLOBALS['debug_edhtml'])
;
else if ($_SERVER['REMOTE_ADDR'])
list($blue, $noblue, $htmlok) = array("<span style='color:#00c'>", "</span>", 1);
else if (defined('STDOUT') && posix_isatty(STDOUT))
list($blue, $noblue, $red, $nored, $ansiok) = getenv('IT_ED_BRIGHT') ? array("\033[34m", "\033[m", "\033[33m", "\033[m", 1) : array("\033[34m", "\033[m", "\033[31m", "\033[m", 1);
$src = it_debug::srcline(1);
list($dummy, $function, $paramlist) = preg_match('#\b(D|ED|EDC|EDX)\s*\((.*)#i', $src, $parts) ? $parts : array();
$paramtokens = token_get_all("<?php $paramlist");
array_shift($paramtokens);
$param = "";
$argnames = array();
foreach ($paramtokens as $token)
{
if ($token == "(")
$paramnesting++;
else if ($token == ")")
{
if (!$paramnesting--) # Found closing parens
{
$argnames[] = trim($param);
break;
}
}
if (($token == ",") && !$paramnesting)
{
$argnames[] = trim($param);
$param = "";
}
else
$param .= is_array($token) ? $token[1] : $token;
}
if (preg_match('#^EDC$#i', $function)) # First argument was removed by EDC
array_shift($argnames);
foreach ($args as $arg)
{
$var = array_shift($argnames);
$item = gettype($arg) == 'resource' || is_array($arg) && isset($arg['GLOBALS']) || is_object($arg) && is_a($arg, "SimpleXMLElement") ? trim(print_r($arg, true)) : trim(var_export($arg, true));
# Replace PHP 5 var_export object representation by old style
while (preg_match("#(.*\b)(\w+)::__set_state\(array\(([^()]+)\)\)(.*)#s", $item, $regs) && ++$iterations < 100)
{
list (, $head, $classname, $values, $tail) = $regs;
$classname = strtolower($classname);
$values = preg_replace("#'(\w+)' =>\s*([^\n]+),#", 'var \$$1 = $2;', $values);
$item = $head . "class $classname { $values }$tail";
}
$item = preg_replace_callback('/\b(1[2345]\d\d\d\d\d\d\d\d)\b(.*)/', function($m) { return $m[1] . $m[2] . " # " . date('Y-m-d H:i:s', $m[1]); }, $item);
$item = preg_replace("#(=>?)\s*\n\s*(array|class)#", '$1 $2', $item); # array( and class on same line as key
$item = preg_replace_callback('#array \(\s+([^(){};]{1,100}),\s+\)#', function($m) { return "array (" . preg_replace("#\n\s+#", " ", $m[1]) . ")"; }, $item); # short arrays on 1 line
$item = preg_replace('#class (\S+) \{\s+([^({,;]+;)?\s+\}#', 'class $1 { $2 }', $item); # 1-element objects on 1 line
#$item = preg_replace('#\{\s*var \$attr#', '{ var $attr', $item); # move $attr on same line
$item = preg_replace("#\\(\s*\n\s*\\)#", "()", $item); # empty arrays on 1 line
#$item = preg_replace('#\s+var \$_(.|\n)*?;\s*\n#', "", $item);
$item = "$red$item$nored";
if ($htmlok)
$item = preg_replace("#(https?:)?//[^\s']*#", "<a href='\$0'>\$0</a>", strtr($item, $htmlspecialchars)); # htmlspecialchars() does not like bad utf8
if (preg_match('/^[\'"]/', $var))
$r .= "$item ";
else {
$var = "$blue$var=$noblue";
$r .= $previtem && preg_match("/\n/", $item . $previtem) ? "\n$var$item " : "$var$item ";
$previtem = $item;
}
}
if ($GLOBALS['debug_indent'])
$r = str_repeat(" ", count(debug_backtrace(@constant('DEBUG_BACKTRACE_IGNORE_ARGS')))-3) . $r;
# not it_html::Q(); we dont wanna load it_html in ultraclassloader debugging
$title = htmlspecialchars(it_debug::backtrace(array('skiplevels' => 2)), ENT_COMPAT, "ISO-8859-1"); # skip this func as well as ED()/EDX()
if ($htmlok)
return "<pre title='$title' style='color:#c00; text-align:left; background:white; border-bottom:1px solid #ddd; z-index:9999; position:relative; line-height:1'>$r</pre>\n";
else
return $ansiok ? "$r\n" : "\xe2\x96\x88\xe2\x96\x8c" . preg_replace("#\n#", "\n\xe2\x96\x88 ", "$r") . "\n";
}
/**
* Return short stackdump
* @param $p['levels'] number of stack levels to return (default: 0 = all)
* @param $p['skiplevels'] number of stack levels to omit
* @param $p['skipfiles'] regular expression of filenames to omit
* @param $p['trace'] Stack trace to compact
*/
static function backtrace($p = array())
{
if (!is_array($p))
$p = array('skiplevels' => $p);
$p += array('levels' => 0, 'skiplevels'=> 0, 'skipfiles' => "###");
foreach ($p['trace'] ?: array_slice(debug_backtrace(@constant('DEBUG_BACKTRACE_IGNORE_ARGS')), $p['skiplevels']) as $call)
{
if (($fn = $call['file']) && !it::match($p['skipfiles'], $call['file']))
{
$fn = (it::match('auto_prepend', $fn) ? basename(dirname(dirname($fn))) . "/" : (it::match('/(cgi|bin)/', $fn) ? basename(dirname($fn)) . "/" : "")) . basename($fn);
$result[] = $fn . ":" . $call['line'];
if (--$p['levels'] == 0)
break;
}
}
return join(" ", (array)$result);
}
static function set($debug_string)
{
foreach (preg_split('/[.,]/', $debug_string) as $ultrad)
{
$ultravar = preg_split('/[-=:]/', $ultrad, 2);
$GLOBALS["debug_$ultravar[0]"] = isset($ultravar[1]) ? $ultravar[1] : 1;
}
# keep debug parameters in subrequests
$_SERVER['ULTRAHOSTNAME'] = it::replace(['^\.+' => '', '([^.])\.*$' => '\1.'], $debug_string) . $_SERVER['ULTRAHOSTNAME'];
}
}
?>
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