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// *****************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0 *
// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
// *****************************************************************************
#ifndef ERROR_LOG_H_8917590832147915
#define ERROR_LOG_H_8917590832147915
#include <cassert>
#include <vector>
#include "time.h"
#include "i18n.h"
#include "zstring.h"
namespace zen
{
enum MessageType
{
MSG_TYPE_INFO = 0x1,
MSG_TYPE_WARNING = 0x2,
MSG_TYPE_ERROR = 0x4,
};
struct LogEntry
{
time_t time = 0;
MessageType type = MSG_TYPE_ERROR;
Zstringc message; //conserve memory (=> avoid std::string SSO overhead!)
};
std::string formatMessage(const LogEntry& entry);
class ErrorLog
{
public:
void logMsg(const std::wstring& msg, MessageType type, time_t time = std::time(nullptr));
struct Stats
{
int info = 0;
int warning = 0;
int error = 0;
};
Stats getStats() const;
//subset of std::vector<> interface:
using const_iterator = std::vector<LogEntry>::const_iterator;
const_iterator begin() const { return entries_.begin(); }
const_iterator end () const { return entries_.end (); }
bool empty() const { return entries_.empty(); }
private:
std::vector<LogEntry> entries_;
};
//######################## implementation ##########################
inline
void ErrorLog::logMsg(const std::wstring& msg, MessageType type, time_t time)
{
entries_.push_back({time, type, utfTo<Zstringc>(msg)});
}
inline
ErrorLog::Stats ErrorLog::getStats() const
{
Stats count;
for (const LogEntry& entry : entries_)
switch (entry.type)
{
case MSG_TYPE_INFO:
++count.info;
break;
case MSG_TYPE_WARNING:
++count.warning;
break;
case MSG_TYPE_ERROR:
++count.error;
break;
}
assert(std::ssize(entries_) == count.info + count.warning + count.error);
return count;
}
inline
std::wstring getMessageTypeLabel(MessageType type)
{
switch (type)
{
case MSG_TYPE_INFO:
return _("Info");
case MSG_TYPE_WARNING:
return _("Warning");
case MSG_TYPE_ERROR:
return _("Error");
}
assert(false);
return std::wstring();
}
inline
std::string formatMessage(const LogEntry& entry)
{
std::string msgFmt = '[' + utfTo<std::string>(formatTime(formatTimeTag, getLocalTime(entry.time))) + "] " + utfTo<std::string>(getMessageTypeLabel(entry.type)) + ": ";
const size_t prefixLen = unicodeLength(msgFmt); //consider Unicode!
const Zstringc msg = trimCpy(entry.message);
static_assert(std::is_same_v<decltype(msg), const Zstringc>, "no worries about copying as long as we're using a ref-counted string!");
for (auto it = msg.begin(); it != msg.end(); )
if (*it == '\n')
{
msgFmt += *it++;
msgFmt.append(prefixLen, ' ');
//skip duplicate newlines
for (; it != msg.end() && *it == '\n'; ++it)
;
}
else
msgFmt += *it++;
msgFmt += '\n';
return msgFmt;
}
}
#endif //ERROR_LOG_H_8917590832147915
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