MessageDigestException.h

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#ifndef MESSAGEDIGESTEXCEPTION_H_
#define MESSAGEDIGESTEXCEPTION_H_

#include "LibCryptoSecException.h"

class MessageDigestException : public LibCryptoSecException
{
public:
    enum ErrorCode
    {
        UNKNOWN,
        CTX_INIT,
        CTX_UPDATE,
        CTX_FINISH,
        INVALID_ALGORITHM,
    };
    MessageDigestException(std::string where)
    {
        this->where = where;
        this->errorCode = MessageDigestException::UNKNOWN;
    }
    MessageDigestException(MessageDigestException::ErrorCode errorCode, std::string where)
    {
        this->where = where;
        this->errorCode = errorCode;
    }
    virtual ~MessageDigestException() throw () {}
    virtual std::string getMessage() const
    {
        return (MessageDigestException::errorCode2Message(this->errorCode));
    }
    virtual std::string toString() const
    {
        std::string ret;
        if (this->errorCode == MessageDigestException::UNKNOWN)
        {
            ret = "MessageDigestException. Called by: " + this->where + ".";
        }
        else
        {
            ret = "MessageDigestException: " + MessageDigestException::errorCode2Message(this->errorCode) + ". Called by: " + this->where + ".";
        }
        return ret;
    }
    virtual MessageDigestException::ErrorCode getErrorCode()
    {
        return this->errorCode;
    }
    static std::string errorCode2Message(MessageDigestException::ErrorCode errorCode)
    {
        std::string ret;
        switch (errorCode)
        {
            case MessageDigestException::UNKNOWN:
                ret = "Unknown error";
                break;
            case MessageDigestException::INVALID_ALGORITHM:
                ret = "Invalid message digest algorithm";
                break;
            case MessageDigestException::CTX_INIT:
                ret = "Creating message digest context";
                break;
            case MessageDigestException::CTX_UPDATE:
                ret = "Updating message digest context";
                break;
            case MessageDigestException::CTX_FINISH:
                ret = "Finishing message digest context";
                break;
//          case ErrorCode:::
//              ret = "";
//              break;
        }
        return ret;
    }
    
protected:
    MessageDigestException::ErrorCode errorCode;
};

#endif /*MESSAGEDIGESTEXCEPTION_H_*/