add default charset when not specified

explicitly state the wordcount default value

src/cli/Add.cpp

@@ -133,8 +133,7 @@ int Add::execute(QStringList arguments)
             passwordGenerator.setLength(passwordLength.toInt());
         }
 
-        passwordGenerator.setCharClasses(PasswordGenerator::LowerLetters | PasswordGenerator::UpperLetters |
-                                         PasswordGenerator::Numbers);
+        passwordGenerator.setCharClasses(PasswordGenerator::DefaultCharset);
         QString password = passwordGenerator.generatePassword();
         entry->setPassword(password);
     }

src/cli/Edit.cpp

@@ -149,8 +149,7 @@ int Edit::execute(QStringList arguments)
             passwordGenerator.setLength(passwordLength.toInt());
         }
 
-        passwordGenerator.setCharClasses(PasswordGenerator::LowerLetters | PasswordGenerator::UpperLetters |
-                                         PasswordGenerator::Numbers);
+        passwordGenerator.setCharClasses(PasswordGenerator::DefaultCharset);
         QString password = passwordGenerator.generatePassword();
         entry->setPassword(password);
     }

src/cli/PassGen.cpp

@@ -96,12 +96,7 @@ int PassGen::execute(QStringList arguments)
         classes |= PasswordGenerator::EASCII; 
     }
 
-    if (classes == 0x0) {
-        passwordGenerator.setCharClasses(PasswordGenerator::LowerLetters | PasswordGenerator::UpperLetters |
-                                         PasswordGenerator::Numbers);
-    } else {
-        passwordGenerator.setCharClasses(classes);
-    }
+    passwordGenerator.setCharClasses(classes);
 
     if (!passwordGenerator.isValid()) {
         outputTextStream << parser.helpText().replace("keepassxc-cli", "keepassxc-cli passgen");

src/core/PassphraseGenerator.cpp

@@ -48,7 +48,7 @@ void PassphraseGenerator::setWordCount(int wordCount)
         m_wordCount = wordCount;
     } else {
         // safe default if something goes wrong
-        m_wordCount = 7;
+        m_wordCount = DefaultWordCount;
     }
 
 }

src/core/PassphraseGenerator.h

@@ -36,6 +36,8 @@ public:
 
     QString generatePassphrase() const;
 
+    static const int DefaultWordCount = 7;
+
 private:
     int m_wordCount;
     QString m_separator;

src/core/PasswordGenerator.cpp

@@ -35,11 +35,19 @@ double PasswordGenerator::calculateEntropy(QString password)
 
 void PasswordGenerator::setLength(int length)
 {
+    if (length <= 0) {
+        m_length = DefaultLength;
+        return;
+    }
     m_length = length;
 }
 
 void PasswordGenerator::setCharClasses(const CharClasses& classes)
 {
+    if (classes == 0) {
+        m_classes =  DefaultCharset;
+        return;
+    }
     m_classes = classes;
 }
 

src/core/PasswordGenerator.h

@@ -34,7 +34,8 @@ public:
         UpperLetters      = 0x2,
         Numbers           = 0x4,
         SpecialCharacters = 0x8,
-        EASCII            = 0x10
+        EASCII            = 0x10,
+        DefaultCharset    = LowerLetters | UpperLetters | Numbers
     };
     Q_DECLARE_FLAGS(CharClasses, CharClass)