From 883c36c929b42219bbf66ac8226cd3479a754e34 Mon Sep 17 00:00:00 2001
From: Jan <Dr.Janson@DESKTOP-AD348NI.fritz.box>
Date: Sun, 7 Jan 2024 16:52:10 +0100
Subject: [PATCH] save/read am ende und anfang

---
 .../informatik/spreadsheet/Axel.java          | 17 ++--------
 .../informatik/spreadsheet/Spreadsheet.java   | 31 ++++++++++++++++---
 2 files changed, 29 insertions(+), 19 deletions(-)

diff --git a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
index a3bf4ab..d48fa56 100644
--- a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
+++ b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
@@ -1,6 +1,5 @@
 package de.hs_mannheim.informatik.spreadsheet;
 
-import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.PrintWriter;
@@ -17,18 +16,8 @@ public class Axel {
 		Spreadsheet spr = new Spreadsheet(10,6);
 		@SuppressWarnings("resource")
 		Scanner input = new Scanner(System.in);
-		
-		spr.put("A3", "123");
-		
-		spr.put("B9", "=41+A2+10-2/3");
-		spr.put("B8", "200");
-		spr.put("B7", "200");
-		spr.put("B6", "5");
-		spr.put("B5", "5");
-		spr.put("B4", "24");
-		spr.put("B3", "24");
-		spr.put("B2", "28");
-		spr.put("B1", "24");
+		String filePath = "Axel/resources/zahlen.csv";
+		spr.readCsv(filePath,"A3");
 		
 		
 		System.out.println("Schreibe 'stop' zum anhalten.");
@@ -63,8 +52,6 @@ public class Axel {
             }
 		}while(true);
 		
-		String filePath = "Axel/resources/zahlen.csv";
-		
 		try (PrintWriter writer = new PrintWriter(new FileOutputStream(filePath))) {
 		    spr.saveCsv(writer);
 		    System.out.println("CSV file saved successfully.");
diff --git a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
index 8c8dbac..bb09fb5 100644
--- a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
+++ b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
@@ -1,5 +1,6 @@
 package de.hs_mannheim.informatik.spreadsheet;
 
+import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.PrintWriter;
@@ -7,6 +8,7 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Scanner;
 
 
 /**
@@ -86,13 +88,34 @@ public class Spreadsheet {
 	/** 
 	 * A method for reading in data from a CSV file.
 	 * @param path The file to read.
-	 * @param separator The char used to split up the input, e.g. a comma or a semicolon.
-	 * @param starCellName The upper left cell where data from the CSV file should be inserted.
+	 * @param startCellName The upper left cell where data from the CSV file should be inserted.
 	 * @return Nothing.
 	 * @exception IOException If path does not exist.
 	 */
-	public void readCsv(String path, char separator, String startCellName) throws FileNotFoundException {
-		// TODO: implement this
+	public void readCsv(String path, String startCellName) throws FileNotFoundException {
+		Scanner csvIn = new Scanner(new File(path));
+		int index= 0;
+		
+		while(csvIn.hasNextLine()){
+			String line =csvIn.nextLine();
+			String all="";
+			int filled=0;
+			for(int i = 0;i<line.length();i++) {
+				if(line.charAt(i)==',') {
+					if(!all.isBlank()) {
+						put(index,i-filled,all);
+						all="";
+					}
+				}else {
+					filled++;
+					all+=line.charAt(i);
+				}
+				
+			}
+			index++;
+		}
+		
+		csvIn.close();
 	}
 
 	/**