source: cpp/common/loggers/loggers.cpp @ 919

// This file is a part of Framsticks SDK.  http://www.framsticks.com/
// Copyright (C) 1999-2019  Maciej Komosinski and Szymon Ulatowski.
// See LICENSE.txt for details.

#include "loggers.h"
#include <common/util-string.h>
#include <string.h>

void logMessage(const char *obj, const char *method, int level, const char *msg)
{
        tlsGetRef(message_handler_manager_instance).send(obj, method, level, msg);
}

THREAD_LOCAL_DEF(LoggerManager, message_handler_manager_instance);

void LoggerManager::send(int position, const char *obj, const char *method, int level, const char *msg)
{
        if (position >= (int)loggers.size()) position = loggers.size() - 1;
        bool blocked = false;
        for (int i = position; i >= 0; i--)
        {
                LoggerBase *logger = loggers[i];
                if ((!(logger->options & LoggerBase::Paused)) &&
                        ((!blocked) || (logger->options & LoggerBase::CannotBeBlocked)))
                {
                        logger->handle(obj, method, level, msg);
                        if (!(logger->options & LoggerBase::DontBlock)) blocked = true;
                }
        }
}

int LoggerManager::add(LoggerBase *logger)
{
        logger->manager = this;
        loggers.push_back(logger);
        return loggers.size() - 1;
}

void LoggerManager::remove(int i)
{
        LoggerBase *h = loggers[i];
        h->manager = NULL;
        loggers.erase(loggers.begin() + i);
}

void LoggerManager::remove(LoggerBase *logger)
{
        int index = find(logger);
        if (index >= 0)
                remove(index);
}

void LoggerManager::removeAll()
{
        while (loggers.size() > 0)
                remove(loggers.size() - 1);
}

//////////////////////////////////

void LoggerBase::send(const char *obj, const char *method, int level, const char *msg)
{
        if (!isEnabled()) return;
        int position = manager->find(this);
        if (position >= 0) manager->send(position - 1, obj, method, level, msg);
}

void LoggerBase::logPrintf(const char *obj, const char *method, int level, const char *msg, ...)
{
        if (!isEnabled()) return;
        string buf;
        va_list argptr;
        va_start(argptr, msg);
        buf = ssprintf_va(msg, argptr);
        va_end(argptr);
        send(obj, method, level, buf.c_str());
}


void LoggerBase::enable()
{
        if (isEnabled()) return;
        tlsGetRef(message_handler_manager_instance).add(this);
}

void LoggerBase::disable()
{
        if (!isEnabled()) return;
        tlsGetRef(message_handler_manager_instance).remove(this);
}

void LoggerBase::pause()
{
        if (isPaused()) return;
        options |= Paused;
}

void LoggerBase::resume()
{
        if (!isPaused()) return;
        options &= ~Paused;
}

void LoggerBase::handle(const char *obj, const char *method, int level, const char *msg)
{
        int line = 0; //all lines except the first one get the "..." prefix
        const char* nextsep;
        do
        {
                nextsep = strchr(msg, '\n');
                if (nextsep == NULL) //last chunk, until the end
                        nextsep = strchr(msg, '\0');
                if ((nextsep > msg) && (nextsep[-1] == '\r'))
                        nextsep--;
                if (line == 0)
                {
                        if (*nextsep == 0) //there was only one line! no need to modify it in any way.
                                handleSingleLine(obj, method, level, msg);
                        else //first line from multi-line
                                handleSingleLine(obj, method, level, string(msg, nextsep - msg).c_str());
                }
                else //consecutive lines from multi-line
                        handleSingleLine(obj, method, level, (LOG_MULTILINE_CONTINUATION + string(msg, nextsep - msg)).c_str()); //could also add line numbers like ...(3)... but let's keep the prefix short and simple
                line++;
                if ((options & Paused) != 0) break; //seemingly pointless test (it was already checked), but 'options' can change inside handleSingleLine().
                if ((nextsep[0] == '\r') && (nextsep[1] == '\n'))
                        msg = nextsep + 2;
                else if (*nextsep)
                        msg = nextsep + 1;
        } while (*nextsep);
}

/////////////////////////////////

void LoggerToMemory::handle(const char *obj, const char *method, int level, const char *msg)
{
        if (level > maxlevel) maxlevel = level;
        if (level >= LOG_INFO) infocount++;
        if (level >= LOG_WARN) warncount++;
        if (level >= LOG_ERROR) errcount++;

        if (level >= minleveltostore)
        {
                storedcount++;
                if (options & (StoreFirstMessage | StoreAllMessages))
                {
                        if (!((options&StoreFirstMessage) && (msgs.length() > 0)))
                        {
                                if (msgs.length() > 0) msgs += '\n';
                                msgs += ssprintf(LOG_FORMAT, logLevelName(level), obj, method, msg);
                        }
                }
        }
}

string LoggerToMemory::getCountSummary() const
{
        if (getInfoCount())
        {
                string msg;
                if (getErrorCount())
                        msg = ssprintf("%d error(s)", getErrorCount());
                int w;
                if (w = getWarningCount() - getErrorCount())
                        msg += ssprintf("%s%d warning(s)", (getErrorCount() ? ", " : ""), w);
                if (w = getInfoCount() - getWarningCount())
                        msg += ssprintf("%s%d message(s)", (getWarningCount() ? ", " : ""), w);
                return msg;
        }
        return string("");
}