diff --git a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java index 90261ee..45681fe 100644 --- a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java +++ b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java @@ -1,71 +1,209 @@ package de.hs_mannheim.informatik.spreadsheet; +import java.io.BufferedReader; +import java.io.File; import java.io.FileNotFoundException; +import java.io.FileReader; import java.io.IOException; import java.util.Scanner; + /** * Part of a simplified spreadsheet system for the PR1 programming lab at Hochschule Mannheim. * * @author Oliver Hummel */ public class Axel { - - public static void main(String[] args) throws FileNotFoundException { + + Spreadsheet spr; + public static void main(String[] args) throws IOException { Scanner scanner = new Scanner(System.in); - Spreadsheet spr = new Spreadsheet(10,10); + String directoryPath = "C:\\Users\\devra\\git\\Axel\\Axel\\resources\\"; + String filePath = "C:\\Users\\devra\\git\\Axel\\Axel\\resources\\example.csv"; - System.out.println(); + System.out.println("\nWilkommen zum coolsten Spreadsheet Programm der Welt!"); + System.out.println("Was möchten sie machen?"); -// spr.put("A1", "13"); -// spr.put("A2", "1"); -// spr.put("A3", "123"); -// -// spr.put("B1", "=3"); -// spr.put("c1", "=A2-A1+30"); -// spr.put("B9", "=41+A1"); -// spr.put("J5", "=7*6/5"); -// spr.put("J6", "=3/2"); + System.out.println("\n 1. Neues Dokument erstellen"); + System.out.println(" 2. Dokument öffnen"); + System.out.println(" 3. Programm schließen"); + System.out.print("-> "); + String userInput = scanner.nextLine(); - - - int test=1; - System.out.println("Wilkommen zum coolsten Spreadsheet Programm der Welt!"); - System.out.println("Beispiel-Formel: 'B2=15+5' "); - - while(test==1) { - System.out.println("Geben sie ihre Formel ein: "); - System.out.print("-> "); - String userInput = scanner.nextLine(); - - if(userInput.matches("[A-Za-z][1-9][0-9]?=" - + "((((([A-Za-z][1-9][0-9]?)|([0-9]+))(\\*|\\+|\\-|\\/))*" - + "(([A-Za-z][1-9][0-9]?)|([0-9]+)))|" - + "((SUMME|PRODUKT|MID|STABW|MIN|MAX)\\(([A-Za-z][1-9][0-9]*\\:[A-Za-z][1-9][0-9]*)\\)))")) - { - String[] parts = userInput.split("="); - spr.put(parts[0],"="+ parts[1]); + switch(userInput) { + case "1": + neuesDokument(directoryPath); + break; -// System.out.println(parts[0]); - System.out.println(spr); - } - else { - System.out.println("Formel ist nicht valide! "); + case "2": + dokumentAuswaehlen(directoryPath,filePath); + break; - } - - -// System.out.println("Was möchten sie machen?"); -// -// System.out.println("1. Dokument öffnen"); -// System.out.println("2. neues Dokument erstellen"); - - + case "3": + break; } - - spr.saveCsv("C:\\Users\\devra\\git\\Axel\\Axel\\resources\\zahlen.csv"); - - // TODO: You might want to put "UI loop" for entering value and formulas here resp. in some UI methods. } + /** + * A method for creating a new .csv file + * @param directoryPath The path where the new File is being saved. + * @return Nothing. + * @exception IOException If path does not exist. + */ + public static void neuesDokument(String directoryPath) throws IOException { + //TODO: Zeilen und Spalten begrenzen + Scanner scanner = new Scanner(System.in); + + System.out.println("Wie viele Spalten soll ihr Dokument haben?(1-26)"); + System.out.print("->"); + String spalten=scanner.nextLine(); + + System.out.println("Wie viele Zeilen soll ihr Dokument haben?(1-99)"); + System.out.print("->"); + String zeilen=scanner.nextLine(); + + String name=""; + while (true) { + System.out.println("Wie soll ihr Dokument heißen?"); + System.out.print("->"); + + name = scanner.nextLine(); + File file = new File(directoryPath, name + ".csv"); + + if (file.exists()) { + System.out.println("\nDie Datei '" + name + ".csv" + "' existiert bereits, wähle einen anderen Namen"); + + } else { + break; + } + + } + Spreadsheet spr = new Spreadsheet(Integer.parseInt(zeilen),Integer.parseInt(spalten)); + String filePath=directoryPath+name+".csv"; + + spr.saveCsv(filePath); + System.out.println("Die Datei '"+name+".csv' wurde angelegt"); + + Spreadsheet spr1 = new Spreadsheet(Integer.parseInt(zeilen),Integer.parseInt(spalten)); + spr1.readCsv(filePath,","); + System.out.println(spr1); + + eingabeLoop(spr1,filePath); + + } + + /** + * A method for selecting a .csv file + * @param directoryPath The path where a File can be openend from. + * @return Nothing. + * @exception IOException if BufferedReader can't access a file. + */ + public static void dokumentAuswaehlen(String directoryPath,String filePath) throws IOException { + File folder = new File(directoryPath); + + Scanner scanner = new Scanner(System.in); + String userInput=""; + + if (folder.exists() && folder.isDirectory()) { + File[] files = folder.listFiles((dir, name) -> name.toLowerCase().endsWith(".csv")); + + if (files != null) { + while(true) { + System.out.println("\nWähle eine Datei aus: "); + System.out.println(""); + for (int i = 0; i < files.length; i++) { + System.out.println((i + 1) + ". " + files[i].getName()); + } + + System.out.print("->"); + userInput = scanner.nextLine(); + + if(Integer.parseInt(userInput)>files.length||Integer.parseInt(userInput)<1) { + System.err.println("Datei nicht vorhanden!"); + } + else { + break; + } + } + filePath = directoryPath+files[Integer.parseInt(userInput)-1].getName(); + + //feststellen wie groß die Datei ist(Zeilen/Spalten) + BufferedReader reader = new BufferedReader(new FileReader(filePath)); + String line; + int zeilenAnzahl = 0; + int spaltenAnzahl = 20; + + while ((line = reader.readLine()) != null) { + zeilenAnzahl++; + String[] spalten = line.split(",",-1); //-1 for empty cells + spaltenAnzahl = spalten.length; + } + reader.close(); + + //neues objekt mit zeilen/spalten-anzahl anlegen um .readCsv aufzurufen + Spreadsheet spr1 = new Spreadsheet(zeilenAnzahl,spaltenAnzahl); + spr1.readCsv(filePath,","); + System.out.println(spr1); + + eingabeLoop(spr1,filePath); + + } else { + System.out.println("Es wurde noch keine Datei angelegt."); + } + } else { + System.out.println("Ungültiges Verzeichnis oder Verzeichnis existiert nicht."); + System.out.println("Geben sie hier das Verzeichnis ein in dem sie Arbeiten möchten"); + System.out.print("-> "); + directoryPath = scanner.nextLine(); + } + } + + /** + * A method for editing a .csv file + * @param filePath The path of the File that will be edited + * @param spr1 A Spreadsheet object used to access Spreadsheet-methods + * @return Nothing. + * @exception FileNotFoundException if file does not exist. + */ + private static void eingabeLoop(Spreadsheet spr1, String filePath) throws FileNotFoundException { + + System.out.println("\n---------------------------------"); + System.out.println("| Beispiel Formel: 'B2=B5*5' |"); + System.out.println("| 'save' um zu Speichern |"); + System.out.println("| 'exit' um Programm zu beenden |"); + System.out.println("---------------------------------"); + + int flag = 1; + while (flag == 1) { + Scanner scanner = new Scanner(System.in); + System.out.println("\nGeben sie ihre Formel/Befehl ein: "); + System.out.print("-> "); + String userInput = scanner.nextLine(); + + if (userInput.matches("[A-Za-z][1-9][0-9]?=" + + "((((([A-Za-z][1-9][0-9]?)|([0-9]+))(\\*|\\+|\\-|\\/))*" + + "(([A-Za-z][1-9][0-9]?)|([0-9]+)))|" + + "((SUMME|PRODUKT|MID|STABW|MIN|MAX)\\(([A-Za-z][1-9][0-9]*\\:[A-Za-z][1-9][0-9]*)\\)))")){ + String[] parts = userInput.split("="); + spr1.put(parts[0], "=" + parts[1]); + + System.out.println(spr1); + } else if (userInput.toLowerCase().contains("exit")) { + System.out.println("Programm wurde beendet!"); + flag = 0; + } else if (userInput.toLowerCase().contains("save")) { + spr1.saveCsv(filePath); + + File file = new File(filePath); + String filename = file.getName(); + + System.out.println("'"+filename+"' wurde erfolgreich gespeichert!"); + } else { + System.err.println("Formel ist nicht valide!"); + } + } + + } + + } \ No newline at end of file diff --git a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java index 224b329..c841ce1 100644 --- a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java +++ b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java @@ -1,6 +1,8 @@ package de.hs_mannheim.informatik.spreadsheet; +import java.io.BufferedReader; import java.io.FileNotFoundException; +import java.io.FileReader; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; @@ -14,17 +16,21 @@ import java.util.regex.Pattern; * @author Oliver Hummel */ public class Spreadsheet { + int rows=0; + int cols=0; Cell[][] cells; - + /** * Constructor that creates a Spreadsheet of size rows * cols. * @param rows number of rows * @param cols number of columns */ public Spreadsheet(int rows, int cols) { - - // TODO limit the maximum size on 99 (1..99) rows and 26 (A..Z) columns - + + // TODO limit the maximum size to 99 (1..99) rows and 26 (A..Z) columns + this.rows=rows; + this.cols=cols; + cells = new Cell[rows][cols]; for (int r = 0; r < rows; r++) @@ -87,12 +93,20 @@ 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. * @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 separator) throws IOException { + BufferedReader reader = new BufferedReader(new FileReader(path)); + + for(int row=0;row zahlen = new ArrayList<>(); while(m.find()) { @@ -187,7 +200,6 @@ public class Spreadsheet { } } - int ersteZahl = Integer.parseInt(get(zahlen.get(0))); int zweiteZahl=0; @@ -213,8 +225,6 @@ public class Spreadsheet { break; } } - - return ersteZahl; } @@ -224,6 +234,8 @@ public class Spreadsheet { /** * This method checks if a given string contains one or more digits * to make sure that the string consists of only numbers, + * @param input The input that is getting checked for only numbers + * @return returns true when the string contains only numbers */ public boolean containsOnlyNumbers(String input) { return input.matches("[0-9]+");