Part 2 is underway. Writing in RandomAccessFiles completed.

Author: apfel-das

src/test/Main.java

@@ -1,10 +1,11 @@
 package test;
 import util.FileOps;
+import util.FilePageAccess;
 import util.Item;
 import util.List;
 import util.Node;
 
-
+import java.io.*;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.Scanner;
@@ -16,7 +17,13 @@ public class Main {
 
 	public static void main(String[] args) throws IOException,FileNotFoundException {
 
+		//define useful thresholds.
+		final int MAX_LINE = 80;
+		final int MIN_WORD = 2;
+		final int MAX_WORD = 20;
+		final int PAGESIZE = 128;
 
+		//instantiate structures and objects.
 		List list = new List();
 		Scanner in = new Scanner(System.in);
 		Session u = new Session();
@@ -29,9 +36,17 @@ public static void main(String[] args) throws IOException,FileNotFoundException
 			System.exit(0);
 		}
 
-		//open given .txt file, read line-wise
 
-		FileOps fops = new FileOps(args[0],list,80, 5 ,20);
+		//open given .txt file, read line-wise.
+		String fNam = args[0];
+		String dict = fNam+".ndx";
+		
+		
+		
+		//construct an instance of a utility class.
+		FileOps fops = new FileOps(fNam,list,MAX_LINE, MIN_WORD ,MAX_WORD);
+		FilePageAccess fpa= new FilePageAccess(PAGESIZE,MAX_WORD,dict);
+	
 
 		// read and fill the LineList
 		fops.retrieveContext();
@@ -50,7 +65,7 @@ public static void main(String[] args) throws IOException,FileNotFoundException
 
 			if(inputCheck(u.getCmd()) != null) 
 			{
-				execCommand(u,list,in,fops);
+				execCommand(u,list,in,fops,fpa);
 			}
 
 			System.out.println();
@@ -72,7 +87,7 @@ public static void main(String[] args) throws IOException,FileNotFoundException
 
 }
 
-	private static void execCommand(Session u, List lines,Scanner input, FileOps f) throws FileNotFoundException, IOException 
+	private static void execCommand(Session u, List lines,Scanner input, FileOps f,FilePageAccess fpa) throws FileNotFoundException, IOException 
 	{
 
 
@@ -118,7 +133,11 @@ private static void execCommand(Session u, List lines,Scanner input, FileOps f)
 				break;	
 			case "l":
 				//print all lines, nodes of the file
-				lines.print();				
+				
+				if(!u.isRaw())
+					lines.print();
+				else
+					lines.printRaw();				
 				break;
 			case "n":
 				u.alterPrintMode();
@@ -189,7 +208,15 @@ private static void execCommand(Session u, List lines,Scanner input, FileOps f)
 				break;
 			case "c":
 
-				f.fillWordMap();
+				//construct a dictionary and print the outcome.
+				fpa.fillDictionary(f.fillWordMap()); 
+				
+				//print info.
+				System.out.print("Ok. Datapages of "+fpa.getPageSize()+" :"+fpa.getDataPages());
+				
+				
+				
+				
 				break;
 
 
@@ -210,7 +237,7 @@ private static String inputCheck(String inp)
 
 		//using a regex to check input and another one to check whether to print message to user or not.
 		String valid = "[atdlnpqwxc=#\\-\\$\\^\\+]"; 
-		String printable = "[lp=#]"; 
+		String printable = "[clp=#]"; 
 
 		Matcher m = Pattern.compile(valid).matcher(inp);
 		Matcher mp = Pattern.compile(printable).matcher(inp);

src/test/Session.java

@@ -15,6 +15,7 @@ public Session(boolean r, int curr, File fp, String command)
 		currentLine = curr;
 		f = fp;
 		cmd = command;
+	
 	}
 
 	public Session() 

src/util/FileOps.java

@@ -7,48 +7,55 @@
 
 public class FileOps {
 
-	File f;
-	List lList;
+	private File f;
+	private List lList;
 	private int minSize, maxSize;
 	static int threshold;
+	final int tokenSize = maxSize + 4;
 
 
-	public FileOps(String fNam, List l, int t,int low, int up) throws FileNotFoundException 
+	public FileOps(String fNam,List l, int t,int low, int up) throws FileNotFoundException 
 	{
 
 		f = new File(fNam);
 		minSize = low;
 		maxSize = up;
 		lList = l;
 		threshold = t;
+	
 
 
 
 	}
+	
+	public File getFile() 
+	{
+		return this.f;
+	}
+	
 	public void retrieveContext() throws IOException,FileNotFoundException
 	{
 		BufferedReader r = new BufferedReader(new InputStreamReader(new FileInputStream(f)));
-		String line = r.readLine();
+		String line;
 		int lCount = 0;
 		LineItem l;
 
 
 
 		//itterate through the file, line - wise		
-		while(line != null) 
+		while((line = r.readLine()) != null) 
 		{
 
 
 			//process, get an Item back
 			l = (LineItem) formatInput(line.trim(), lCount);
 
 			//store LineItem
+			if(l != null)
+				storeLine(lList,l);
 
-			storeLine(lList,l);
 
-			
-			//move to next line
-			line = r.readLine();
+			//count to next line.
 			lCount++;
 
 		}
@@ -91,7 +98,7 @@ public void storeContext() throws IOException,FileNotFoundException
 
 
 	/*
-	 *  -Gets a String representing an ASCII text and a line Number. Returns a LineItem with info given. 
+	 *  -Gets a String representing an ASCII text and a line Number. Returns a LineItem with info given or null if given string is emptyLine. 
 	 * 	-Trims given string - input in case that this exceeds threshold characters.
 	 * 
 	 * */
@@ -109,6 +116,10 @@ public static Item formatInput(String lContext, int lNum)
 
 		}
 
+		// exclude the empty or whitespaced line.
+		if(lContext.isEmpty())
+			return null;
+		
 		//create a LineItem
 		LineItem l = new LineItem(lContext);
 
@@ -162,6 +173,11 @@ public ArrayList<Word> fillWordMap()
 		//sort the array list based on the "word"-key.
 		Collections.sort(words);
 
+		for(int i=0; i<words.size(); i++) 
+		{
+			System.out.println(words.get(i).getContext());
+		}
+		
 		///return the sorted arraylist.
 
 		return words;
@@ -170,6 +186,9 @@ public ArrayList<Word> fillWordMap()
 
 	}
 
+
+	
+	
 
 	/*
 	 * Stores a created line item in a double linked list.
@@ -182,7 +201,13 @@ public void storeLine(List l, LineItem line)
 
 	}
 
-	
+	public void printWordMap(ArrayList<Word> map)
+	{
+		for(int i = 0; i<map.size(); i++) 
+		{
+			System.out.println(map.get(i).getContext()+" "+map.get(i).getLine());
+		}
+	}
 
 	private boolean isValidWord(String w) 
 	{