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package org.opendaylight.mwtn.base.internalTypes;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import org.json.JSONException;
import org.json.JSONObject;
import org.osgi.framework.Bundle;
import org.osgi.framework.FrameworkUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class Resources {
private static final Logger LOG = LoggerFactory.getLogger(Resources.class);
private static URL getFileURL(String resFile)
{
Bundle b = FrameworkUtil.getBundle(Resources.class);
URL u=null;
if(b==null)
{
LOG.warn("cannot load bundle resources");
try {
u=new File("src/main/resources"+resFile).toURI().toURL();
} catch (MalformedURLException e) {
LOG.warn(e.getMessage());
}
}
else
u= b.getEntry(resFile);
return u;
}
private static File getFile(String resFile)
{
Bundle b = FrameworkUtil.getBundle(Resources.class);
File f=null;
if(b==null)
{
LOG.warn("cannot load bundle resources");
f=new File("src/main/resources"+resFile);
} else
try {
f=new File(b.getEntry(resFile).toURI());
} catch (URISyntaxException e) {
}
return f;
}
private static String readFile(final URL u) throws IOException
{
return readFile(u.openStream());
}
private static String readFile(final File f) throws IOException
{
return readFile(new FileInputStream(f));
}
private static String readFile(final InputStream s) throws IOException
{
//read file
BufferedReader in = new BufferedReader(new InputStreamReader(s));
StringBuilder sb=new StringBuilder();
String inputLine;
while ((inputLine = in.readLine()) != null)
{
sb.append(inputLine);
}
in.close();
s.close();
return sb.toString();
}
public static String getFileContent(String resFile) throws IOException
{
return readFile(getFileURL(resFile));
}
public static List<File> getFiles(String folder,final String filter,final boolean recursive)
{
List<File> list=new ArrayList<File>();
FileFilter ff=new FileFilter() {
@Override
public boolean accept(File pathname) {
if(pathname.isFile())
return pathname.getName().contains(filter);
else
return true;
}
};
File ffolder=getFile(folder);
if(ffolder!=null && ffolder.isDirectory())
{
File[] files=ffolder.listFiles(ff);
if(files!=null && files.length>0)
{
for(File f:files)
{
if(f.isFile())
list.add(f);
else if(f.isDirectory() && recursive)
{
getFilesRecursive(f,ff,list);
}
}
}
}
return list;
}
public static List<URL> getFileURLs(String folder,final String filter,final boolean recursive) throws IOException
{
Bundle b = FrameworkUtil.getBundle(Resources.class);
List<URL> list=new ArrayList<URL>();
if(b==null)
{
FileFilter ff=new FileFilter() {
@Override
public boolean accept(File pathname) {
if(pathname.isFile())
return pathname.getName().contains(filter);
else
return true;
}
};
File ffolder=getFile(folder);
if(ffolder!=null && ffolder.isDirectory())
{
File[] files=ffolder.listFiles(ff);
if(files!=null && files.length>0)
{
for(File f:files)
{
if(f.isFile())
list.add(f.toURI().toURL());
else if(f.isDirectory() && recursive)
{
getFileURLsRecursive(f,ff,list);
}
}
}
}
}
else
{
getResourceURLsTreeRecurse(b,filter,b.getEntryPaths(folder),recursive,list);
}
return list;
}
private static void getFilesRecursive(File root, FileFilter ff, List<File> list) {
if(root!=null && root.isDirectory())
{
File[] files=root.listFiles(ff);
if(files!=null && files.length>0)
{
for(File f:files)
{
if(f.isFile())
list.add(f);
else if(f.isDirectory())
{
getFilesRecursive(f,ff,list);
}
}
}
}
}
private static void getFileURLsRecursive(File root, FileFilter ff, List<URL> list) throws MalformedURLException {
if(root!=null && root.isDirectory())
{
File[] files=root.listFiles(ff);
if(files!=null && files.length>0)
{
for(File f:files)
{
if(f.isFile())
list.add(f.toURI().toURL());
else if(f.isDirectory())
{
getFileURLsRecursive(f,ff,list);
}
}
}
}
}
private static void getResourceURLsTreeRecurse(Bundle b, String filter, Enumeration<String> resource,boolean recursive,List<URL> outp) throws IOException {
while (resource.hasMoreElements()) {
String name = resource.nextElement();
Enumeration<String> list = b.getEntryPaths(name);
if (list != null) {
if(recursive)
getResourceURLsTreeRecurse(b, filter, list,recursive,outp);
} else {
//Read
if(name.contains(filter))
{
LOG.debug("add "+name+ " to list");
outp.add(b.getEntry(name));
}
else
LOG.debug("filtered out "+name);
}
}
}
public static List<JSONObject> getJSONFiles(String folder,boolean recursive)
{
List<URL> urls=null;
try {
urls = getFileURLs(folder,".json",recursive);
} catch (IOException e1) {
LOG.warn("failed to get urls from resfolder "+folder+" : "+e1.getMessage());
}
LOG.debug("found "+urls==null?"no":urls.size()+" files");
List<JSONObject> list=new ArrayList<JSONObject>();
if(urls!=null)
{
for (URL u: urls)
{
LOG.debug("try to parse "+u.toString());
try {
JSONObject o=new JSONObject(readFile(u));
list.add(o);
} catch (JSONException | IOException e) {
LOG.warn("problem reading/parsing file "+u+" :"+e.getMessage());
}
}
}
return list;
}
public static JSONObject getJSONFile(String resFile) {
LOG.debug("loading json file "+resFile+" from res");
URL u=getFileURL(resFile);
if (u == null)
{
LOG.warn("cannot find resfile: "+resFile);
return null;
}
JSONObject o=null;
try
{
//parse to jsonobject
o=new JSONObject(readFile(u));
}
catch(Exception e)
{
LOG.warn("problem reading/parsing file: "+e.getMessage());
}
return o;
}
public static boolean extractFileTo(String resFile, File oFile) {
if(oFile==null)
return false;
LOG.debug("try to copy "+resFile+" from res to "+oFile.getAbsolutePath());
URL u=getFileURL(resFile);
if (u == null)
{
LOG.warn("cannot find resfile:"+resFile);
return false;
}
try {
InputStream in = u.openStream();
oFile.getParentFile().mkdirs();
OutputStream outStream;
outStream = new FileOutputStream(oFile);
int theInt;
while ((theInt = in.read()) >= 0) {
outStream.write(theInt);
}
in.close();
outStream.flush();
outStream.close();
LOG.debug("file written successfully");
}
catch (IOException e) {
LOG.error("problem writing file:"+e.getMessage());
return false;
}
return true;
}
}
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