VisClient/org/hfbk/vis/FileUtils.java

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package org.hfbk.vis;

//import java.awt.Desktop;
import java.awt.Desktop;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.URI;
import java.net.URL;

public class FileUtils {
        
        public static File getNextFreeFile(String path) throws IOException{
                String suffix,prefix;
                int point=path.lastIndexOf(".");
                if (point>0){
                        prefix=path.substring(0,point);
                        suffix=path.substring(point);
                }else{
                        prefix=path; 
                        suffix="";
                }
                int i=0;
                File f;
                do{
                        f= new File(prefix+i+suffix);
                        i++;
                }while (!f.createNewFile());
                
                return f;
        }
        
        public static void saveLocal(String url){
                try {
                        
                        String sourceName=new URL(url).getPath();
                        int slash=sourceName.lastIndexOf("/");
                        if (slash>0)
                                sourceName=sourceName.substring(slash+1);                       
                        
                        InputStream is=new URL(url).openStream();
                        OutputStream os=new FileOutputStream(getNextFreeFile(System.getProperty("user.home")+"/Vis_"+sourceName));
                        
                        byte[] buffer=new byte[0x4000];
                        int bytesRead;
                        while(true){
                                bytesRead=is.read(buffer);
                                if (bytesRead<=0)               break;
                                os.write(buffer,0,bytesRead);
                        }
                        is.close(); 
                        os.close();
                        System.out.println(url+ " saved.");                     
                } catch (Exception e) {
                        System.out.println("VisHUD.saveLocal:"+e);              
                }
        }
        
        public static InputStream getStream(String ressource) {
                try {
                        if (!ressource.matches("http://.*|file:.*"))
                                ressource = "file:" + ressource;
                        URL url = new URL(ressource);
                        return url.openStream();
                } catch (Exception e) {
                        throw (new RuntimeException(e));
                }
        }

        public static String read(String path) {
                try {
                        BufferedReader ir = new BufferedReader(new InputStreamReader(
                                        getStream(path)));
                        StringBuffer text = new StringBuffer();
                        String line;

                        while ((line = ir.readLine()) != null) {
                                text.append(line);
                                text.append('\n');
                        }
                        return text.toString();
                } catch (IOException e) {
                        return "";
                }
        }
        
        public static void browse(String url) {
                try {
                        Desktop.getDesktop().browse(new URI(url));
                } catch (Throwable e) {
                        System.out.println("Cannot browse:"+e);
                }       
        }
}

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