<?php
//=======================================================================
// File: JPGRAPH_ERRHANDLER.PHP
// Description: Error handler class together with handling of localized
// error messages. All localized error messages are stored
// in a separate file under the "lang/" subdirectory.
// Created: 2006-09-24
// Ver: $Id: jpgraph_errhandler.inc.php,v 1.2 2007/07/03 06:37:19 mindblender Exp $
//
// Copyright 2006 (c) Aditus Consulting. All rights reserved.
//========================================================================
// Since the error handler needs to be accessed from anywhere this must be
// made a global variable.
GLOBAL $__jpg_err;
GLOBAL $__jpg_err_locale ;
$__jpg_err_locale = DEFAULT_ERR_LOCALE;
// Handles the retrieval of localized error messages
class ErrMsgText {
var $lt=NULL;
function ErrMsgText() {
GLOBAL $__jpg_err_locale;
$file = 'lang/'.$__jpg_err_locale.'.inc.php';
// If the chosen locale doesn't exist try english
if( !file_exists(dirname(__FILE__).'/'.$file) ) {
$__jpg_err_locale = 'en';
}
$file = 'lang/'.$__jpg_err_locale.'.inc.php';
if( !file_exists(dirname(__FILE__).'/'.$file) ) {
die('Internal error: Chosen locale file for error messages does not exist.');
}
require_once($file);
$this->lt = $_jpg_messages;
}
function Get($errnbr,$a1=null,$a2=null,$a3=null,$a4=null,$a5=null) {
GLOBAL $__jpg_err_locale;
if( !isset($this->lt[$errnbr]) ) {
return 'Internal error: The specified error message ('.$errnbr.') does not exist in the chosen locale ('.$__jpg_err_locale.')';
}
$ea = $this->lt[$errnbr];
$j=0;
if( $a1 !== null ) {
$argv[$j++] = $a1;
if( $a2 !== null ) {
$argv[$j++] = $a2;
if( $a3 !== null ) {
$argv[$j++] = $a3;
if( $a4 !== null ) {
$argv[$j++] = $a4;
if( $a5 !== null ) {
$argv[$j++] = $a5;
}
}
}
}
}
$numargs = $j;
if( $ea[1] != $numargs ) {
// Error message argument count do not match.
// Just return the error message without arguments.
return $ea[0];
}
switch( $numargs ) {
case 1:
$msg = sprintf($ea[0],$argv[0]);
break;
case 2:
$msg = sprintf($ea[0],$argv[0],$argv[1]);
break;
case 3:
$msg = sprintf($ea[0],$argv[0],$argv[1],$argv[2]);
break;
case 4:
$msg = sprintf($ea[0],$argv[0],$argv[1],$argv[2],$argv[3]);
break;
case 5:
$msg = sprintf($ea[0],$argv[0],$argv[1],$argv[2],$argv[3],$argv[4]);
break;
case 0:
default:
$msg = sprintf($ea[0]);
break;
}
return $msg;
}
}
//
// A wrapper class that is used to access the specified error object
// (to hide the global error parameter and avoid having a GLOBAL directive
// in all methods.
//
class JpGraphError {
function Install($aErrObject) {
GLOBAL $__jpg_err;
$__jpg_err = $aErrObject;
}
function SetErrLocale($aLoc) {
GLOBAL $__jpg_err_locale ;
$__jpg_err_locale = $aLoc;
}
function Raise($aMsg,$aHalt=true){
GLOBAL $__jpg_err;
$tmp = new $__jpg_err;
$tmp->Raise($aMsg,$aHalt);
}
function RaiseL($errnbr,$a1=null,$a2=null,$a3=null,$a4=null,$a5=null) {
GLOBAL $__jpg_err;
$t = new ErrMsgText();
$msg = $t->Get($errnbr,$a1,$a2,$a3,$a4,$a5);
$tmp = new $__jpg_err;
$tmp->Raise($msg);
}
}
// The default trivial text error handler.
class JpGraphErrObject {
var $iTitle = "JpGraph Error";
var $iDest = false;
function JpGraphErrObject() {
// Empty. Reserved for future use
}
function SetTitle($aTitle) {
$this->iTitle = $aTitle;
}
function SetStrokeDest($aDest) {
$this->iDest = $aDest;
}
// If aHalt is true then execution can't continue. Typical used for fatal errors.
function Raise($aMsg,$aHalt=true) {
$aMsg = $this->iTitle.' '.$aMsg;
if ($this->iDest) {
$f = @fopen($this->iDest,'a');
if( $f ) {
@fwrite($f,$aMsg);
@fclose($f);
}
}
else {
echo $aMsg;
}
if( $aHalt )
die();
}
}
//==============================================================
// An image based error handler
//==============================================================
class JpGraphErrObjectImg extends JpGraphErrObject {
function Raise($aMsg,$aHalt=true) {
$img_iconerror =
'iVBORw0KGgoAAAANSUhEUgAAACgAAAAoCAMAAAC7IEhfAAAAaV'.
'BMVEX//////2Xy8mLl5V/Z2VvMzFi/v1WyslKlpU+ZmUyMjEh/'.
'f0VyckJlZT9YWDxMTDjAwMDy8sLl5bnY2K/MzKW/v5yyspKlpY'.
'iYmH+MjHY/PzV/f2xycmJlZVlZWU9MTEXY2Ms/PzwyMjLFTjea'.
'AAAAAXRSTlMAQObYZgAAAAFiS0dEAIgFHUgAAAAJcEhZcwAACx'.
'IAAAsSAdLdfvwAAAAHdElNRQfTBgISOCqusfs5AAABLUlEQVR4'.
'2tWV3XKCMBBGWfkranCIVClKLd/7P2Q3QsgCxjDTq+6FE2cPH+'.
'xJ0Ogn2lQbsT+Wrs+buAZAV4W5T6Bs0YXBBwpKgEuIu+JERAX6'.
'wM2rHjmDdEITmsQEEmWADgZm6rAjhXsoMGY9B/NZBwJzBvn+e3'.
'wHntCAJdGu9SviwIwoZVDxPB9+Rc0TSEbQr0j3SA1gwdSn6Db0'.
'6Tm1KfV6yzWGQO7zdpvyKLKBDmRFjzeB3LYgK7r6A/noDAfjtS'.
'IXaIzbJSv6WgUebTMV4EoRB8a2mQiQjgtF91HdKDKZ1gtFtQjk'.
'YcWaR5OKOhkYt+ZsTFdJRfPAApOpQYJTNHvCRSJR6SJngQadfc'.
'vd69OLMddVOPCGVnmrFD8bVYd3JXfxXPtLR/+mtv59/ALWiiMx'.
'qL72fwAAAABJRU5ErkJggg==' ;
if( function_exists("imagetypes") )
$supported = imagetypes();
else
$supported = 0;
if( !function_exists('imagecreatefromstring') )
$supported = 0;
if( ob_get_length() || headers_sent() || !($supported & IMG_PNG) ) {
// Special case for headers already sent or that the installation doesn't support
// the PNG format (which the error icon is encoded in).
// Dont return an image since it can't be displayed
die($this->iTitle.' '.$aMsg);
}
$aMsg = wordwrap($aMsg,55);
$lines = substr_count($aMsg,"\n");
// Create the error icon GD
$erricon = Image::CreateFromString(base64_decode($img_iconerror));
// Create an image that contains the error text.
$w=400;
$h=100 + 15*max(0,$lines-3);
$img = new Image($w,$h);
// Drop shadow
$img->SetColor("gray");
$img->FilledRectangle(5,5,$w-1,$h-1,10);
$img->SetColor("gray:0.7");
$img->FilledRectangle(5,5,$w-3,$h-3,10);
// Window background
$img->SetColor("lightblue");
$img->FilledRectangle(1,1,$w-5,$h-5);
$img->CopyCanvasH($img->img,$erricon,5,30,0,0,40,40);
// Window border
$img->SetColor("black");
$img->Rectangle(1,1,$w-5,$h-5);
$img->Rectangle(0,0,$w-4,$h-4);
// Window top row
$img->SetColor("darkred");
for($y=3; $y < 18; $y += 2 )
$img->Line(1,$y,$w-6,$y);
// "White shadow"
$img->SetColor("white");
// Left window edge
$img->Line(2,2,2,$h-5);
$img->Line(2,2,$w-6,2);
// "Gray button shadow"
$img->SetColor("darkgray");
// Gray window shadow
$img->Line(2,$h-6,$w-5,$h-6);
$img->Line(3,$h-7,$w-5,$h-7);
// Window title
$m = floor($w/2-5);
$l = 100;
$img->SetColor("lightgray:1.3");
$img->FilledRectangle($m-$l,2,$m+$l,16);
// Stroke text
$img->SetColor("darkred");
$img->SetFont(FF_FONT2,FS_BOLD);
$img->StrokeText($m-50,15,$this->iTitle);
$img->SetColor("black");
$img->SetFont(FF_FONT1,FS_NORMAL);
$txt = new Text($aMsg,52,25);
$txt->Align("left","top");
$txt->Stroke($img);
if ($this->iDest) {
$img->Stream($this->iDest);
} else {
$img->Headers();
$img->Stream();
}
if( $aHalt )
die();
}
}
// Install the default error handler in a global accessible variable
if( USE_IMAGE_ERROR_HANDLER ) {
$__jpg_err = "JpGraphErrObjectImg";
}
else {
$__jpg_err = "JpGraphErrObject";
}
?>
