Added fileparser

2017-06-08 15:55:57 +02:00
parent 58036bd973
commit 64fb88d273
4 changed files with 128 additions and 1 deletions
@@ -0,0 +1,102 @@
+package com.imegumii;
+
+import java.io.*;
+
+/**
+ * Created by kenny on 8-6-2017.
+ */
+public class FileParser {
+
+    public static DFA<String> readDFA(String filename)
+    {
+        File f = new File("input/" + filename + ".dot");
+
+        Character[] chars = {'a', 'b'};
+        DFA<String> dfa = new DFA<String>(chars);
+
+        try (BufferedReader br = new BufferedReader(new FileReader(f))) {
+            String line;
+            while ((line = br.readLine()) != null) {
+                if(line.startsWith("B")) {
+                    String[] states = line.substring(1,line.length()).split(",");
+                    for(String s : states) { dfa.defineAsStartState(s); }
+                }
+
+                else if(line.startsWith("E")) {
+                    String[] states = line.substring(1,line.length()).split(",");
+                    for(String s : states) { dfa.defineAsEndState(s); }
+                }
+
+                else {
+                    String[] trans = line.split(">");
+                    dfa.addTransition(new Transition<String>(trans[0], trans[1].toCharArray()[0], trans[2]));
+                }
+            }
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        return dfa;
+    }
+
+    public static NDFA<String> readNDFA(String filename)
+    {
+        File f = new File("input/" + filename + ".dot");
+
+        Character[] chars = {'a', 'b'};
+        NDFA<String> ndfa = new NDFA<String>(chars);
+
+        try (BufferedReader br = new BufferedReader(new FileReader(f))) {
+            String line;
+            while ((line = br.readLine()) != null) {
+                if(line.startsWith("B")) {
+                    String[] states = line.substring(1,line.length()).split(",");
+                    for(String s : states) { ndfa.defineAsStartState(s); }
+                }
+
+                else if(line.startsWith("E")) {
+                    String[] states = line.substring(1,line.length()).split(",");
+                    for(String s : states) { ndfa.defineAsEndState(s); }
+                }
+
+                else {
+                    String[] trans = line.split(">");
+
+                    if(trans[1].equals("$")) {
+                        ndfa.addTransition(new Transition<String>(trans[0], Transition.EPSILON, trans[2]));
+                    }
+                    else
+                        ndfa.addTransition(new Transition<String>(trans[0], trans[1].toCharArray()[0], trans[2]));
+                }
+            }
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        return ndfa;
+    }
+
+    public static RegExp readRegex(String filename)
+    {
+        File f = new File("input/" + filename + ".dot");
+
+        BufferedReader br = null;
+        String line = "Error";
+        try {
+            br = new BufferedReader(new FileReader(f));
+            line = br.readLine();
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        RegExp regex = new RegExp("a"); //RegExp.parse(line);
+
+        return regex;
+    }
+}