Implement text syslog record parsing

src/Severity.h

@@ -0,0 +1,73 @@
+/*
+ The MIT License (MIT)
+
+Copyright (c) 2015 Marko Živanović
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+ */
+
+#ifndef SEVERITY_H
+#define	SEVERITY_H
+
+#include <istream>
+
+class Severity {
+public:
+
+    Severity(const char* src) : Severity(std::string(src)) {
+    };
+
+    Severity(const std::string& src) : _value(readFromString(src)) {
+    };
+
+    Severity(std::istream& source) : Severity(readFromStream(source)) {
+    };
+
+    Severity(const Severity& orig) : _value(orig._value) {
+    };
+
+    bool operator!=(const Severity& right) const {
+        bool result = !(*this == right); // Reuse equals operator
+        return result;
+    }
+
+    bool operator==(const Severity& right) const {
+        return _value == right._value;
+    }
+
+    virtual ~Severity() {
+    };
+
+    friend std::ostream& operator<<(std::ostream& os, const Severity& obj) {
+        os << obj._value;
+        return os;
+    }
+
+private:
+
+    enum Value {
+        Emergency = 0, Alert = 1, Critical = 2, Error = 3, Warning = 4, Notice = 5, Informational = 6, Debug = 7
+    };
+
+    const Value _value;
+    const std::string readFromStream(std::istream& source);
+    const Value readFromString(const std::string& src);
+};
+
+#endif	/* SEVERITY_H */