changes to the crypto lab

Crypto/src/ROT13.java

@@ -1,6 +1,8 @@
+import java.io.*;
+
 import static java.lang.Character.isLowerCase;
 import static java.lang.Character.isUpperCase;
-//import static java.lang.Character.toLowerCase;
+
 
 public class ROT13  {
     private int shift;
@@ -50,4 +52,49 @@ public class ROT13  {
         return subStr1.concat(subStr);
     }
 
+    public String fileReader(String file2){
+        File file = new File(file2);
+        BufferedReader br = null;
+        String str;
+        StringBuilder build = new StringBuilder();
+        try {
+            br = new BufferedReader(new FileReader(file));
+            while ((str = br.readLine()) != null){
+                build.append(str).append('\n');
+            }
+            build.deleteCharAt(build.length()-1);
+        }catch (FileNotFoundException e){
+            e.printStackTrace();
+        }catch (IOException e){
+            e.printStackTrace();
+        }
+        finally {
+            try {
+                br.close();
+            }catch (IOException e){
+                e.printStackTrace();
+            }
+        }
+        fileWrite(build.toString());
+
+        return build.toString();
+    }
+
+    public void fileWrite (String file){
+        BufferedWriter wr = null;
+        try {
+            wr = new BufferedWriter(new FileWriter("sonnet18.enc"));
+            wr.write(file);
+        }catch (IOException e){
+            e.printStackTrace();
+        }
+        finally {
+            try{
+                wr.close();
+            }catch (IOException e){
+                e.printStackTrace();
+            }
+        }
+    }
+
 }

Crypto/src/ROT13Test.java

@@ -1,5 +1,7 @@
 import org.junit.Test;
 
+import java.io.File;
+
 import static org.junit.Assert.*;
 
 public class ROT13Test {
@@ -87,5 +89,76 @@ public class ROT13Test {
         // Then
         assertTrue(actual.equals(Q1));
     }
+    @Test
+    public void fileReadTest(){
+        ROT13 fileCipher = new ROT13();
+
+        String file = "Shall I compare thee to a summer’s day?\n" +
+                "Thou art more lovely and more temperate:\n" +
+                "Rough winds do shake the darling buds of May,\n" +
+                "And summer’s lease hath all too short a date;\n" +
+                "Sometime too hot the eye of heaven shines,\n" +
+                "And often is his gold complexion dimm'd;\n" +
+                "And every fair from fair sometime declines,\n" +
+                "By chance or nature’s changing course untrimm'd;\n" +
+                "But thy eternal summer shall not fade,\n" +
+                "Nor lose possession of that fair thou ow’st;\n" +
+                "Nor shall death brag thou wander’st in his shade,\n" +
+                "When in eternal lines to time thou grow’st:\n" +
+                "   So long as men can breathe or eyes can see,\n" +
+                "   So long lives this, and this gives life to thee.";
+        String read = fileCipher.fileReader("/Users/roym/labs_week3/ZCW-SimpleCrypt0/sonnet18.txt");
+        //String actual = fileCipher.crypt(read);
+        assertEquals(file, read);
+
+    }
+
+    @Test
+    public void encryptTest(){
+        ROT13 fileCipher = new ROT13();
+        String file = "Shall I compare thee to a summer’s day?\n" +
+                "Thou art more lovely and more temperate:\n" +
+                "Rough winds do shake the darling buds of May,\n" +
+                "And summer’s lease hath all too short a date;\n" +
+                "Sometime too hot the eye of heaven shines,\n" +
+                "And often is his gold complexion dimm'd;\n" +
+                "And every fair from fair sometime declines,\n" +
+                "By chance or nature’s changing course untrimm'd;\n" +
+                "But thy eternal summer shall not fade,\n" +
+                "Nor lose possession of that fair thou ow’st;\n" +
+                "Nor shall death brag thou wander’st in his shade,\n" +
+                "When in eternal lines to time thou grow’st:\n" +
+                "   So long as men can breathe or eyes can see,\n" +
+                "   So long lives this, and this gives life to thee.";
+        String expected =  fileCipher.encrypt(file);
+        String read = fileCipher.fileReader("/Users/roym/labs_week3/ZCW-SimpleCrypt0/sonnet18.txt");
+        String actual = fileCipher.encrypt(read);
+        fileCipher.fileWrite(actual);
+
+        assertEquals(expected, actual);
+    }
+
+    @Test
+    public void fileDecrypt(){
+        ROT13 fileCipher = new ROT13();
+        String expected = "Shall I compare thee to a summer’s day?\n" +
+                "Thou art more lovely and more temperate:\n" +
+                "Rough winds do shake the darling buds of May,\n" +
+                "And summer’s lease hath all too short a date;\n" +
+                "Sometime too hot the eye of heaven shines,\n" +
+                "And often is his gold complexion dimm'd;\n" +
+                "And every fair from fair sometime declines,\n" +
+                "By chance or nature’s changing course untrimm'd;\n" +
+                "But thy eternal summer shall not fade,\n" +
+                "Nor lose possession of that fair thou ow’st;\n" +
+                "Nor shall death brag thou wander’st in his shade,\n" +
+                "When in eternal lines to time thou grow’st:\n" +
+                "   So long as men can breathe or eyes can see,\n" +
+                "   So long lives this, and this gives life to thee.";
+        String read = fileCipher.fileReader("/Users/roym/labs_week3/ZCW-SimpleCrypt0/sonnet18.enc");
+        String actual = fileCipher.decrypt(read);
+        assertEquals(expected, actual);
+    }
+
 
 }

sonnet18.enc

@@ -0,0 +1,14 @@
+Funyy V pbzcner gurr gb n fhzzre’f qnl?
+Gubh neg zber ybiryl naq zber grzcrengr:
+Ebhtu jvaqf qb funxr gur qneyvat ohqf bs Znl,
+Naq fhzzre’f yrnfr ungu nyy gbb fubeg n qngr;
+Fbzrgvzr gbb ubg gur rlr bs urnira fuvarf,
+Naq bsgra vf uvf tbyq pbzcyrkvba qvzz'q;
+Naq rirel snve sebz snve fbzrgvzr qrpyvarf,
+Ol punapr be angher’f punatvat pbhefr hagevzz'q;
+Ohg gul rgreany fhzzre funyy abg snqr,
+Abe ybfr cbffrffvba bs gung snve gubh bj’fg;
+Abe funyy qrngu oent gubh jnaqre’fg va uvf funqr,
+Jura va rgreany yvarf gb gvzr gubh tebj’fg:
+   Fb ybat nf zra pna oerngur be rlrf pna frr,
+   Fb ybat yvirf guvf, naq guvf tvirf yvsr gb gurr.