If you have a float stored using writeFloat use the following to read it back into C
float aFloat;
unsigned char *pBytes;
pBytes = (unsigned char * )&aFloat;
pBytes[3] = _buffer[_offset++];
pBytes[2] = _buffer[_offset++];
pBytes[1] = _buffer[_offset++];
pBytes[0] = _buffer[_offset++];
return aFloat;
Assume that _buffer is your byte array or pointer to an unsigned char *, and that _offset is the offset in your data.
To read an integer value:
int i = ((_buffer[_offset]<<24)|(_buffer[_offset+1]<<16)|(_buffer[_offset+2]<<8)|(_buffer[_offset+3]));
_offset+=4;
return i;
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Some handy code to dynamtically serve JAD files for OTA installation. The below script sets the appropriate headers types, also tidies up the JAD file removing stray characters which can cause issues and setting the correct file paths internally.
Place the PH script in a root directory as serveJAD.php. Place your JAR and JAD files in a subdirectory /J2ME
Call the script by serveJAD.php?format=J2ME&file={jad minus extension} or you can use the Apache rewrite below and call as /J2ME/file.jad
ie
serveJAD.php?format=J2ME&file=game
or with Apache rewrite
/J2ME/game.jad
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| <?
$format = $_GET["format"];
$file = $_GET["file"].".jad";
header("Cache-Control: no-cache, must-revalidate,no-transform" );
header("Pragma: no-cache" );
header("Content-type: text/vnd.sun.j2me.app-descriptor");
header("Content-Disposition: attachment; filename=".$file.";");
$jad = file_get_contents("./".$format."/".$file);
$lines = explode("\n",$jad);
$final = "";
foreach($lines as $line){
$line = trim($line);
if(strlen($line)>0){
$keypair = explode(": ",$line);
if($keypair[0]=='MIDlet-Jar-URL' || stristr($keypair[0],"RIM-COD-URL")){
$url = trim($keypair[1]);
if(!stristr($url,"http:")){
$keypair[1] = "http://".$_SERVER["HTTP_HOST"]."/$format/".$url;
}
}else if($keypair[0]=='MIDlet-Jar-Size'){
$keypair[1] = filesize("./".$format."/".$_GET["file"].".jar");
}
$line = join(": ",$keypair);
$l = trim($line);
if(!empty($final))$final.="\n";
$final.=$l;
}
}
print($final);
?> |
RewriteEngine On
RewriteRule /J2ME/(.*)\.jad /serveJAD.php?format=J2ME&file=$1
You can also use this to build automatic index pages, using this as dir.php?format=J2ME
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| <?php
$format = $_GET["format"];
$scanthis = "./".$format;
$scanlisting = scandir($scanthis);
$dirlisting = array();
foreach($scanlisting as $key => $value){
if(stristr($value,"jad")){
$name = explode(".",$value);
$dirlisting[$name[0]] = $name[0];
}
}
ksort($dirlisting);
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<link href="apps.css" rel="stylesheet" type="text/css" />
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Application listing</title>
</head>
<body>
<p>
<?php foreach($dirlisting as $name){
?>
<a href="/<?php print($format);?>/<?php print($name);?>.jad"><?php print($name);?></a><br />
<?php
}
?></p>
</body>
</html> |