Rewrote Jed to have multiple classes and cleaned up the code

1 files changed, 0 insertions, 215 deletions

diff --git a/jed.java b/jed.java
deleted file mode 100644
index 8f6d249..0000000
--- a/jed.java
+++ /dev/null
@@ -1,215 +0,0 @@
-import java.util.Scanner;
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.util.ArrayList;
-import java.io.FileWriter;
-import java.io.PrintWriter;
-import java.io.IOException;
-
-class jed {
-
-	private static ArrayList<String> file = new ArrayList<String>(); // Arraylist that stores every line of a file in strings
-	private static Scanner kbIn = new Scanner(System.in);
-	private static int currentLine = 0;
-	private static boolean hasName = true;
-
-	public static void main(String args[]) {
-		String fileName = null;
-		try { // checks if the user provided a file name
-			fileName = args[0];
-			readFile(args[0]);
-		} catch (IndexOutOfBoundsException e) {
-			hasName = false;
-		}
-
-		while (true) {
-			String line = kbIn.nextLine();
-			int err = parser(line, fileName);
-			if (err == 1)
-				break;
-		}
-		kbIn.close();
-	}
-
-	/* parser: the command parser for jed, takes user input and interprets the command */
-	private static int parser(String cmd, String fileName) {
-		int err = 0;
-		if (cmd.equals("w")) // w writes the file
-			err = writeFile(fileName);
-		else if (cmd.equals("q")) // q quits
-			return 1;
-		else if (cmd.equals("a")) // a appends
-			append();
-		else if (cmd.equals("p")) // p prints lines
-			printFile(false);
-		else if (cmd.equals("n")) //n prints lines with numbers
-			printFile(true);
-		else if (isNum(cmd)) { // some positive integer to change lines
-			currentLine = Integer.parseInt(cmd) - 1;
-			System.out.printf("%d %s\n", currentLine + 1, file.get(currentLine));
-		} else if (cmd.equals("c")) // c change current line
-			changeLine();
-		else if (cmd.equals("d")) // d delete current line
-			deleteLine();
-		else if (cmd.substring(0,2).equals("w ")) { // w FILENAME writes a file with user inputed name
-			String s[] = new String[2];
-			s = cmd.split(" ");
-			hasName = true;
-			err = writeFile(s[1]);
-		} else if (cmd.substring(0,1).equals("g")) { // g/expression/ finds user input
-			find(cmd.substring(2, cmd.length() - 1));
-		} else if (cmd.substring(0,2).equals("%s")) { // %s/expression/newExpression/ replaces an expression with new user input through the whole file
-			String temp[] = new String[3];
-			temp = cmd.split("/");
-			replace(0, file.size(), temp[1], temp[2]);
-		} else if (cmd.substring(0,1).equals("<")) { // <integer, integer>command works with d and s/ex/nex/
-			String temp[] = new String[2];
-			temp = cmd.split(">");
-			range(temp[0], temp[1]);
-		} else if (cmd.substring(0,1).equals("s")) { // s/expression/newExpression/ replaces an expression with new user input in the current line
-			String temp[] = new String[3];
-			temp = cmd.split("/");
-			replace(currentLine, currentLine + 1, temp[1], temp[2]);
-		}  else if (cmd.substring(0,1).equals("o")) { // o fileName opens a file
-			readFile(cmd.substring(2,cmd.length()));
-		} else // unknown command
-			System.out.println("?");
-		if (err == 1) // error in writing the file
-			System.out.println("Error writing the file");
-		return 0;
-	}
-
-	/* range: gets the inputed range and runs the command with the range */
-	private static void range(String range, String cmd) {
-		String num[] = new String[2];
-		num = range.replace("<", "").split(",");
-		String temp[] = new String[3];
-		temp = cmd.split("/");
-		int start = Integer.parseInt(num[0]) - 1, stop = Integer.parseInt(num[1]);
-		if (start <= 0 || start-1 >file.size() || stop <= 0 || stop-1 > file.size() || stop <= start)
-			System.out.println("?");
-		if (temp[0].equals("s"))
-			replace(start, stop, temp[1], temp[2]);
-		else if (temp[0].equals("d"))
-			deleteLine(start, stop);
-	}
-
-	/* deleteLine: deletes line in the range of start to stop */
-	private static void deleteLine(int start, int stop) {
-		for (int i = start; i < stop;  i++) {
-			file.remove(start);
-		}
-	}
-
-	/* replace: replaces an expression with new user input */
-	private static void replace(int start, int stop, String ex, String newEx) {
-		for (int i = start; i < stop; i++) {
-			String line = file.get(i);
-			file.add(i, line.replace(ex, newEx));
-			file.remove(i + 1);
-		}
-	}
-
-	/* find: finds user input in the file and prints it with line numbers */
-	private static void find(String expression) {
-		for (int i = 0; i < file.size(); i++) {
-			String line = file.get(i);
-			for (int j = 0, k = expression.length(); k < line.length(); j++, k++) {
-				if (line.substring(j, k).equals(expression)) {
-					System.out.printf("%d %s\n", i + 1, line);
-					break;
-				}
-			}
-		}
-	}
-
-	/* changeLine: changes the current line */
-	private static void changeLine() {
-		file.remove(currentLine);
-		String input;
-		int line = currentLine;
-		while (!(input = kbIn.nextLine()).equals("."))
-			file.add(line++, input);
-	}
-
-	/* deleteLine: deletes the current line */
-	private static void deleteLine() {
-		file.remove(currentLine);
-	}
-
-	/* isNum: checks if a string is a number, only to be used for changing lines */
-	private static boolean isNum(String s) {
-		try {
-			Integer.parseInt(s);
-		} catch (NumberFormatException e) {
-			return false;
-		} catch (NullPointerException e) {
-			return false;
-		}
-		return true;
-	}
-
-	/* append: appends user input to the end of a file */
-	private static void append() {
-		String input;
-		while (!(input = kbIn.nextLine()).equals("."))
-			file.add(input);
-	}
-
-	/* printFile: prints strings from file arraylist, if num is true it includes line numbers */
-	private static void printFile(boolean num) {
-		for (int i = 0; i < file.size(); i++) {
-			if (num)
-				System.out.printf("%d %s\n", i+1, file.get(i));
-			else
-				System.out.println(file.get(i));
-		}
-	}
-
-	/* createFile: creates a file, only to be called by writeFile */
-	private static int createFile(String fileName) {
-		try {
-			File f = new File(fileName);
-			if (f.createNewFile())
-				return 1;
-			return 0;
-		} catch (IOException e) {
-			return -1;
-		}
-	}
-
-	/* writeFile: reads strings from file arraylist and prints them into a file */
-	private static int writeFile(String fileName) {
-		if (!hasName) {
-			System.out.println("?");
-			return 1;
-		}
-		int err = createFile(fileName);
-		if (err == -1)
-			return 1;
-		try {
-			FileWriter fw = new FileWriter(fileName);
-			PrintWriter pw = new PrintWriter(fw);
-			for (int i = 0; i < file.size(); i++)
-				pw.println(file.get(i));
-			pw.close();
-		} catch (IOException e) {
-			return 1;
-		}
-		return 0;
-	}
-
-	/* readFile: opens a file and stores each line in a string arraylist called file */
-	private static int readFile(String fileName) {
-		try {
-			File fileObj = new File(fileName);
-			Scanner fileReader = new Scanner(fileObj);
-			while(fileReader.hasNextLine())
-				file.add(fileReader.nextLine());
-			fileReader.close();
-		} catch (FileNotFoundException e) {
-			createFile(fileName);
-		}
-		return 0;
-	}
-}