ATBUpdateTool/message_handler.cpp

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#include "message_handler.h"
#include <QDateTime>
#include <cstring>
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#define OUTPUT_LEN (512)
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static bool installedMsgHandler = false;
static QtMsgType debugLevel = QtInfoMsg;
QtMsgType getDebugLevel() { return debugLevel; }
void setDebugLevel(QtMsgType newDebugLevel) {
debugLevel = newDebugLevel;
}
bool messageHandlerInstalled() {
return installedMsgHandler;
}
QtMessageHandler atbInstallMessageHandler(QtMessageHandler handler) {
installedMsgHandler = (handler != 0);
static QtMessageHandler prevHandler = nullptr;
if (handler) {
prevHandler = qInstallMessageHandler(handler);
return prevHandler;
} else {
return qInstallMessageHandler(prevHandler);
}
}
///
/// \brief Print message according to given debug level.
///
/// \note Install this function using qInstallMsgHandler().
///
/// int main(int argc, char **argv) {
/// installMsgHandler(atbDebugOutput);
/// QApplication app(argc, argv);
/// ...
/// return app.exec();
/// }
///
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#if (QT_VERSION > QT_VERSION_CHECK(5, 0, 0) && QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
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void atbDebugOutput(QtMsgType type, const QMessageLogContext &context, const QString &msg) {
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static constexpr const char *format = "hh:mm:ss";
// static constexpr const char *format = "dd.MM.yyyy hh:mm:ss";
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QByteArray localMsg = msg.toLocal8Bit();
const char *file = context.file ? context.file : "";
const char *function = context.function ? context.function : "";
const char *p = std::strstr(function, "::");
if (p) {
function = p + 2;
}
char const* output = std::strrchr(file, '/');
if (output) {
file = output + 1;
}
qint64 const currentMSecsSinceEpoch = QDateTime::currentMSecsSinceEpoch();
int const fractional_part = currentMSecsSinceEpoch % 1000;
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char buf[OUTPUT_LEN]{};
memset(buf, 0x00, sizeof(buf));
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QDateTime const datetime = QDateTime::fromMSecsSinceEpoch(currentMSecsSinceEpoch);
switch (type) {
case QtDebugMsg: {
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if (debugLevel == QtDebugMsg) {
snprintf(buf, sizeof(buf)-1, "%30.30s (%20.20s:%04u) %s.%03d DEBG %s\n",
function, file, context.line,
datetime.time().toString(format).toStdString().c_str(),
fractional_part,
localMsg.constData());
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}
} break;
case QtInfoMsg: {
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if (debugLevel == QtInfoMsg || debugLevel == QtDebugMsg) {
snprintf(buf, sizeof(buf)-1, "%30.30s (%20.20s:%04u) %s.%03d INFO %s\n",
function, file, context.line,
datetime.time().toString(format).toStdString().c_str(),
fractional_part,
localMsg.constData());
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}
} break;
case QtWarningMsg: {
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if (debugLevel == QtInfoMsg || debugLevel == QtDebugMsg || debugLevel == QtWarningMsg) {
snprintf(buf, sizeof(buf)-1, "%30.30s (%20.20s:%04u) %s.%03d WARN %s\n",
function, file, context.line,
datetime.time().toString(format).toStdString().c_str(),
fractional_part,
localMsg.constData());
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}
} break;
case QtCriticalMsg: {
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if (debugLevel == QtInfoMsg || debugLevel == QtDebugMsg
|| debugLevel == QtWarningMsg || debugLevel == QtCriticalMsg) {
snprintf(buf, sizeof(buf)-1, "%30.30s (%20.20s:%04u) %s.%03d CRIT %s\n",
function, file, context.line,
datetime.time().toString(format).toStdString().c_str(),
fractional_part,
localMsg.constData());
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}
} break;
case QtFatalMsg: {
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if (debugLevel == QtInfoMsg || debugLevel == QtDebugMsg
|| debugLevel == QtWarningMsg || debugLevel == QtCriticalMsg
|| debugLevel == QtFatalMsg) {
snprintf(buf, sizeof(buf)-1, "%30.30s (%20.20s:%04u) %s.%03d FATAL %s\n",
function, file, context.line,
datetime.time().toString(format).toStdString().c_str(),
fractional_part,
localMsg.constData());
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}
} break;
default: {
fprintf(stderr, "%*.*s.%03d No ErrorLevel defined! %s\n", OUTPUT_LEN, OUTPUT_LEN,
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datetime.time().toString(format).toStdString().c_str(), fractional_part,
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msg.toStdString().c_str());
}
}
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fprintf(stderr, "%s\n", buf);
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}
#endif