Implements decrypt and now uses a stripUmlauts function

1 files changed, 27 insertions, 5 deletions

diff --git a/src/crypt/cryptclasscaesar.cpp b/src/crypt/cryptclasscaesar.cpp
index d7c7827..d33b5d9 100644
--- a/src/crypt/cryptclasscaesar.cpp
+++ b/src/crypt/cryptclasscaesar.cpp
@@ -21,11 +21,7 @@ void CryptClassCaesar::encrypt()
 
     m_cryptText.clear();
 
-    m_clearText = m_clearText.toUpper();
-    m_clearText.replace(QByteArray("Ä"), QByteArray("AE"));
-    m_clearText.replace(QByteArray("Ö"), QByteArray("OE"));
-    m_clearText.replace(QByteArray("Ü"), QByteArray("UE"));
-    m_clearText.replace(QByteArray("ß"), QByteArray("SS"));
+    m_clearText = stripUmlauts(m_clearText);
 
     for (int i = 0; i < m_clearText.size(); i++)
     {
@@ -40,6 +36,19 @@ void CryptClassCaesar::encrypt()
 void CryptClassCaesar::decrypt()
 {
     qDebug("CryptClassCaesar::decrypt");
+    buildMap();
+
+    m_clearText.clear();
+
+    m_cryptText = stripUmlauts(m_cryptText);
+
+    for (int i = 0; i < m_cryptText.size(); i++)
+    {
+        if (m_cryptText[i] >= (char) LOWERBOUND && m_cryptText[i] <= (char) UPPERBOUND)
+        {
+            m_clearText.append(substitutionsMap.key(m_cryptText[i]));
+        }
+    }
 }
 
 void CryptClassCaesar::buildMap()
@@ -68,3 +77,16 @@ void CryptClassCaesar::buildMap()
 
     }
 }
+
+QByteArray CryptClassCaesar::stripUmlauts(QByteArray umlautText)
+{
+    umlautText.replace(QByteArray("ß"), QByteArray("SS"));
+
+    umlautText = umlautText.toUpper();
+
+    umlautText.replace(QByteArray("Ä"), QByteArray("AE"));
+    umlautText.replace(QByteArray("Ö"), QByteArray("OE"));
+    umlautText.replace(QByteArray("Ü"), QByteArray("UE"));
+
+    return umlautText;
+}