1 files changed, 62 insertions, 0 deletions
diff --git a/spice.php b/spice.php
new file mode 100755
index 0000000..de81b13
--- /dev/null
+++ b/spice.php
@@ -0,0 +1,62 @@
+<?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);
+
+     
+?>