Thread: [Mathlib-commitlog] SF.net SVN: mathlib:[442] JMathLib/trunk/src/jmathlib/toolbox/jmathlib/ system/

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Revision: 442
          http://mathlib.svn.sourceforge.net/mathlib/?rev=442&view=rev
Author:   st_mueller
Date:     2008-11-16 17:53:27 +0000 (Sun, 16 Nov 2008)

Log Message:
-----------
load files from server

Modified Paths:
--------------
    JMathLib/trunk/src/jmathlib/toolbox/jmathlib/system/update.java

Modified: JMathLib/trunk/src/jmathlib/toolbox/jmathlib/system/update.java
===================================================================

--- JMathLib/trunk/src/jmathlib/toolbox/jmathlib/system/update.java	2008-08-23 08:22:22 UTC (rev 441)
+++ JMathLib/trunk/src/jmathlib/toolbox/jmathlib/system/update.java	2008-11-16 17:53:27 UTC (rev 442)
@@ -1,5 +1,8 @@
 package jmathlib.toolbox.jmathlib.system;
 
+import java.io.*;
+import java.net.*;
+
 import jmathlib.core.tokens.*;
 import jmathlib.core.functions.ExternalFunction;
 
@@ -9,12 +12,134 @@
 	public OperandToken evaluate(Token[] operands)
 	{
 
-		String s        = "";
-        String lineFile = "";;
+        String lineFile = "";
+        URL url = null;
  		    
-        getInterpreter().displayText("UPDATING JMathLib");
+        getInterpreter().displayText("UPDATING JMathLib\n");
+
+        // get update site and local version of jmathlib
+        String updateSiteS   = getInterpreter().prefs.getLocalProperty("update.site.primary");
+        String localVersionS = getInterpreter().prefs.getLocalProperty("jmathlib.version");
+        localVersionS = localVersionS.replaceAll("/", ".");
+        String updateVersionS = localVersionS;
+        getInterpreter().displayText("update site: "+updateSiteS);
+        getInterpreter().displayText("current version: "+localVersionS);
+
         
+        // first check to which version an update is possible
+        getInterpreter().displayText("Checking to which version an update is possible");
+        try {
+            url = new URL(updateSiteS+"updates/?jmathlib_version="+localVersionS);
+            BufferedReader inR = new BufferedReader(new InputStreamReader(url.openStream()));
+            String s = "";
+            while ((s = inR.readLine()) != null  )
+            {
+                //getInterpreter().displayText("version"+s);
+                if (s.startsWith("update.toversion="))
+                {
+                    // read a file from the server and place it on the local disc
+                    updateVersionS = s.substring(17).trim();
+                    getInterpreter().displayText("updating to version >"+updateVersionS+"< \n");
+                }
+            }
+        }
+        catch (Exception e) {
+            throwMathLibException("update: could not receive version for update");
+        }          
+               
+        
+        
+        
+        // download new files from server 
+        updateSiteS += "updates/jmathlib_" + updateVersionS + "/";
+        
+        //getInterpreter().displayText("updating path: "+updateSiteS);
+        try
+        {
+            url = new URL(updateSiteS);
+        }
+        catch (Exception e)
+        {
+            throwMathLibException("update: malformed url");
+        }          
        
+        BufferedReader inR=null;
+        try
+        {
+            inR = new BufferedReader(new InputStreamReader(url.openStream()));
+            String s = inR.readLine();
+            while (s != null  )
+            {
+                //getInterpreter().displayText("update "+s);
+                
+                if (s.startsWith("file"))
+                {
+                    // read a file from the server and place it on the local disc
+                    String fileS = s.substring(5).trim();
+                    getInterpreter().displayText("new file: >"+fileS+"<");
+                    
+                    // open URL to file on update server
+                    URL fileURL = new URL(updateSiteS+fileS);
+                    InputStream in = fileURL.openStream();
+
+                    // open file on local disc
+                    File file = new File(getWorkingDirectory(),fileS);
+                    OutputStream out = new FileOutputStream(file);
+
+                    byte[] cbuf = new byte[4096]; 
+                    int len;
+                    while ((len = in.read(cbuf)) != -1)
+                    {
+                        out.write(cbuf,0,len);
+                    }
+                    
+                    in.close();
+                    out.close();
+               
+                    
+                }
+                else if (s.startsWith("dir"))
+                {
+                    // create a directory on the local disc
+                    String dirS = s.substring(4).trim();
+                    getInterpreter().displayText("new directory: >"+dirS+"<");
+                    File file = new File(getWorkingDirectory(),dirS);
+                    file.mkdir();
+                    
+                }
+                else if (s.startsWith("del"))
+                {
+                    // delete a file/directory on the local disc
+                    String delS = s.substring(4).trim();
+                    getInterpreter().displayText("delete file/dir: >"+delS+"<");
+                    File file = new File(getWorkingDirectory(),delS);
+                    file.delete();
+                }
+                else if (s.startsWith("prop"))
+                {
+                    // delete a file/directory on the local disc
+                    String propS = s.substring(5).trim();
+                    getInterpreter().displayText("new property: >"+propS+"<");
+                    String[] p = propS.split("=");
+                    getInterpreter().prefs.setLocalProperty(p[0],p[1]);
+                }
+                else
+                {
+                    // empty line or unknown command or comment
+                }
+                
+                
+                // read next line from server
+                s = inR.readLine();
+            }
+
+        }
+        catch (Exception e)
+        {
+            throwMathLibException("update: open or reading stream");
+        }          
+        
+        
 		return null;		
 	}
 }
@@ -31,7 +156,10 @@
 update
 </programlisting>
 @NOTES
-.
+The script first checks the webserver in order to determine, if 
+it is possible to update the current version and if this which 
+version is next.<br>
+It also updates local properties of JMathlib
 @SEE
 checkforupdates
 */


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Thread: [Mathlib-commitlog] SF.net SVN: mathlib:[442] JMathLib/trunk/src/jmathlib/toolbox/jmathlib/ system/

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