1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
<?php
function tempfilesfx($path, $suffix){
do
{
$file = $path."/".mt_rand().$suffix;
}
while(file_exists($file));
return $file;
}
$cmd = file_get_contents('php://input');
//scan for .control directives
if(preg_match('/\.control/',$cmd)){
echo "no control directives allowed";
return;
};
$tempimage =tempfilesfx('/tmp',".ps");
$tempout=tempfilesfx('/tmp',".txt");
//get plot and tran
$control=
".control\n".
" set hcopydevtype=postscript\n".
" set hcopypscolor=true\n".
" set color0 = white ;background\n".
" set color1 = black ;text and grid\n".
" set color2 = rgb:f/0/0 ;vector0\n".
" set color3 = rgb:0/f/0 ;vector1\n".
" set color3 = rgb:0/0/f ;vector2\n".
" op\n";
preg_match('/\.tran.*\n/',$cmd,$tran);
$tran=preg_replace('/^\./','',$tran);
$cmd=preg_replace('/\.tran.*\n/','',$cmd);
preg_match('/\.plot\s+[^\s]+\s+([^\n]+)/',$cmd,$plot);
//$cmd=preg_replace('/\.plot.*\n/','',$cmd);
$hardcopy=" hardcopy ".$tempimage." ".$plot[1]." \n";
$control.=$tran[0];
$control.=$hardcopy;
$control.=".endc\n";
$cmd.=$control;
$cmd=escapeshellarg($cmd);
// echo $cmd;
exec("echo $cmd | /usr/bin/ngspice > $tempout");
try{
$image = new Imagick($tempimage);
$image->setImageFormat("png");
header('Content-type: text/plain');
echo "data:image/png;base64,".base64_encode ( $image);
}
catch(Exception $e){
header('Content-type: text/plain');
echo file_get_contents($tempout);
}
#header('Content-length: '.strlen($output));
unlink($tempimage);
unlink($tempout);
?>
|
