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package driver;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.concurrent.ArrayBlockingQueue;
import fileIO.ReadWrite;
import fileIO.TextFile;
import shared.Parse;
import shared.Parser;
import shared.PreParser;
import shared.Timer;
import tracker.ReadStats;
public class ConcatenateTextFiles {
/** Format: infile1,infile2,...infileN,outfile */
public static void main(String[] args){
{//Preparse block for help, config files, and outstream
PreParser pp=new PreParser(args, new Object() { }.getClass().getEnclosingClass(), false);
args=pp.args;
//outstream=pp.outstream;
}
Timer t=new Timer();
if(ReadWrite.ZIPLEVEL<6){ReadWrite.ZIPLEVEL=6;}
for(int i=0; i<args.length; i++){
final String arg=args[i];
final String[] split=arg.split("=");
String a=split[0].toLowerCase();
String b=split.length>1 ? split[1] : null;
if(Parser.parseZip(arg, a, b)){
//do nothing
}else if(a.equals("append") || a.equals("app")){
append=ReadStats.append=Parse.parseBoolean(b);
}else if(a.equals("overwrite") || a.equals("ow")){
overwrite=Parse.parseBoolean(b);
}else{
concatenate(args[i].split(","));
}
}
t.stop();
System.out.println();
System.out.println("Time: \t"+t);
}
private static void concatenate(String[] split) {
String outname=split[split.length-1];
assert(overwrite || !new File(outname).exists()) : outname+" exists.";
WriteThread wt=new WriteThread(outname);
wt.start();
ArrayList<String>[] bufferptr=new ArrayList[] {new ArrayList<String>(LIST_SIZE)};
for(int i=0; i<split.length-1; i++){
processTerm(split[i], bufferptr, wt);
}
ArrayList<String> buffer=bufferptr[0];
if(buffer==null){
wt.add(new ArrayList<String>(1));
}else if(buffer.isEmpty()){
wt.add(buffer);
}else{
wt.add(buffer);
wt.add(new ArrayList<String>(1));
}
}
private static void processTerm(String term, ArrayList<String>[] bufferptr, WriteThread wt){
System.out.println("Processing term "+term);
File f=new File(term);
if(!f.isDirectory()){
TextFile tf=new TextFile(term, false);
ArrayList<String> buffer=bufferptr[0];
String s=null;
for(s=tf.nextLine(); s!=null; s=tf.nextLine()){
buffer.add(s);
// System.out.println("Added to buffer");
if(buffer.size()>=LIST_SIZE){
// System.out.println("Sent buffer");
// System.out.println("****** "+term+" ******");
// for(String b : buffer){
// System.out.println(b);
// }
wt.add(buffer);
bufferptr[0]=buffer=new ArrayList<String>(LIST_SIZE);
}
}
tf.close();
}else{
assert(f.isDirectory());
File[] contents=f.listFiles();
for(File c : contents){
String abs=c.getAbsolutePath();
if(!abs.equals(wt.fname)){
// System.out.println(c+" == "+new File(wt.fname)+" : "+c.equals(new File(wt.fname)));
processTerm(abs, bufferptr, wt);
}
}
}
}
private static class WriteThread extends Thread{
public WriteThread(String fname_){
String temp=fname_;
try {
temp=new File(fname_).getCanonicalPath();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
fname=temp;
os=ReadWrite.getOutputStream(fname, append, true, true);
writer=new PrintWriter(os);
}
public void add(ArrayList<String> list){
assert(list!=null);
while(list!=null){
// System.out.println("Adding list to queue "+queue.size());
try {
queue.put(list);
list=null;
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
@Override
public void run(){
ArrayList<String> list=null;
while(list==null){
// System.out.println("Waiting for list...");
try {
list=queue.take();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// System.out.println("Took list of size "+(list==null ? "null" : list.size()+""));
if(list!=null){
if(list.isEmpty()){
ReadWrite.finishWriting(writer, os, fname, allowSubprocess);
return;
}
for(String s : list){
if(s!=null){writer.println(s);}
}
}
list=null;
}
}
private final OutputStream os;
private final PrintWriter writer;
private final ArrayBlockingQueue<ArrayList<String>> queue=new ArrayBlockingQueue<ArrayList<String>>(MAX_LISTS);
final String fname;
}
public static final int MAX_LISTS=8;
public static final int LIST_SIZE=100;
public static boolean overwrite=true;
public static boolean append=false;
public static boolean allowSubprocess=true;
}
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