Feature/add logger

CMakeLists.txt

@@ -75,6 +75,8 @@ SET(cppcore_src
 
 SET(cppcore_common_src
     include/cppcore/Common/Hash.h
+    include/cppcore/Common/Logger.h
+    code/Common/Logger.cpp
     include/cppcore/Common/TStringBase.h
     include/cppcore/Common/TStringView.h
     include/cppcore/Common/Variant.h

code/Common/Logger.cpp

@@ -0,0 +1,314 @@
+/*-----------------------------------------------------------------------------------------------
+The MIT License (MIT)
+
+Copyright (c) 2014-2025 Kim Kulling
+
+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.
+-----------------------------------------------------------------------------------------------*/
+#include <cppcore/Common/Logger.h>
+#include <cassert>
+#include <iomanip>
+#include <iostream>
+#include <sstream>
+#include <string>
+
+namespace cppcore {
+
+static constexpr char Line[] =
+        "====================================================================================================";
+
+static void appendDomain(const String &domain, String &logMsg) {
+    if (!domain.isEmpty()) {
+        logMsg += '(';
+        logMsg += domain;
+        logMsg += ')';
+    }
+}
+
+static ::std::string stripFilename(const ::std::string &filename) {
+    if (filename.empty()) {
+        return filename;
+    }
+
+    ::std::string::size_type pos = filename.find_last_of("/");
+    if (pos == ::std::string::npos) {
+        return filename;
+    }
+    const ::std::string strippedName = filename.substr(pos + 1, filename.size() - pos - 1);
+
+    return strippedName;
+}
+
+static void addTraceInfo(const String &file, int line, String &msg) {
+    if (Logger::getInstance()->getVerboseMode() == Logger::VerboseMode::Trace) {
+        msg += String(" (", 2);
+        std::string stripped = stripFilename(file.c_str());
+        msg += String(stripped.c_str(), stripped.size());
+        msg += String(", ", 2);
+        std::stringstream ss;
+        ss << line;
+        std::string lineno = ss.str();
+        msg += String(lineno.c_str(), lineno.size());
+        msg += ')';
+    }
+}
+
+void AbstractLogStream::activate() {
+    mIsActive = true;
+}
+
+void AbstractLogStream::deactivate() {
+    mIsActive = false;
+}
+
+bool AbstractLogStream::isActive() const {
+    return mIsActive;
+}
+
+Logger *Logger::sLogger = nullptr;
+
+Logger *Logger::create() {
+    if (nullptr == sLogger) {
+        sLogger = new Logger;
+    }
+
+    return sLogger;
+}
+
+Logger *Logger::getInstance() {
+    if (nullptr == sLogger) {
+        static_cast<void>(create());
+    }
+
+    return sLogger;
+}
+
+void Logger::kill() {
+    if (sLogger) {
+        delete sLogger;
+        sLogger = nullptr;
+    }
+}
+
+void Logger::setVerboseMode(VerboseMode sev) {
+    mVerboseMode = sev;
+}
+
+Logger::VerboseMode Logger::getVerboseMode() const {
+    return mVerboseMode;
+}
+
+void Logger::trace(const String &domain, const String &msg) {
+    if (getVerboseMode() == VerboseMode::Trace) {
+        String logMsg;
+        logMsg += String("Trace: ", 6);
+        logMsg += msg;
+        appendDomain(domain, logMsg);
+
+        print(logMsg);
+    }
+}
+
+void Logger::debug(const String &domain, const String &msg) {
+    if (getVerboseMode() == VerboseMode::Debug || getVerboseMode() == VerboseMode::Trace) {
+        String logMsg;
+        logMsg += String("Dbg:  ", 6);
+        logMsg += msg;
+        appendDomain(domain, logMsg);
+
+        print(logMsg);
+    }
+}
+
+void Logger::info(const String &domain, const String &msg) {
+    if (getVerboseMode() == VerboseMode::Normal || getVerboseMode() == VerboseMode::Verbose || getVerboseMode() == VerboseMode::Debug || getVerboseMode() == VerboseMode::Trace) {
+        String logMsg;
+
+        logMsg += String("Info: ", 6);
+        logMsg += msg;
+
+        appendDomain(domain, logMsg);
+
+        print(logMsg);
+    }
+}
+
+void Logger::print(const String &msg, PrintMode mode) {
+    if (msg.isEmpty()) {
+        return;
+    }
+
+    if (msg.size() > 8) {
+        if (msg[6] == '<' && msg[7] == '=') {
+            mIntention -= 2;
+        }
+    }
+
+    String logMsg;
+    if (0 != mIntention) {
+        for (uint32_t i = 0; i < mIntention; i++) {
+            logMsg += ' ';
+        }
+    }
+
+    logMsg += msg;
+    if (PrintMode::WithDateTime == mode) {
+        logMsg += String(" (", 2);
+        logMsg += this->getDateTime();
+        logMsg += ')';
+    }
+
+    logMsg += String(" \n", 2);
+    for (size_t i = 0; i < mLogStreams.size(); ++i) {
+        AbstractLogStream *stream = mLogStreams[i];
+        if (stream != nullptr) {
+            stream->write(logMsg);
+        }
+    }
+
+    if (msg.size() > 8) {
+        if (msg[6] == '=' && msg[7] == '>') {
+            mIntention += 2;
+        }
+    }
+}
+
+void Logger::warn(const String &domain, const String &msg) {
+    String logMsg;
+    logMsg += String("Warn: ", 6);
+    logMsg += msg;
+    appendDomain(domain, logMsg);
+
+    print(logMsg);
+}
+
+void Logger::error(const String &domain, const String &msg) {
+    String logMsg;
+    logMsg += String("Err:  ", 6);
+    logMsg += msg;
+    appendDomain(domain, logMsg);
+
+    print(logMsg);
+}
+
+void Logger::fatal(const String &domain, const String &msg) {
+    String logMsg;
+    logMsg += String("Fatal:", 6);
+    logMsg += msg;
+    appendDomain(domain, logMsg);
+
+    print(logMsg);
+}
+
+void Logger::registerLogStream(AbstractLogStream *pLogStream) {
+    if (nullptr == pLogStream) {
+        return;
+    }
+
+    mLogStreams.add(pLogStream);
+}
+
+void Logger::unregisterLogStream(AbstractLogStream *logStream) {
+    if (nullptr == logStream) {
+        return;
+    }
+
+    for (size_t i = 0; i < mLogStreams.size(); ++i) {
+        if (mLogStreams[i] == logStream) {
+            delete mLogStreams[i];
+            mLogStreams.remove(i);
+        }
+    }
+}
+
+Logger::Logger() :
+        mLogStreams(), 
+        mVerboseMode(VerboseMode::Normal),
+        mIntention(0) {
+    mLogStreams.add(new StdLogStream);
+}
+
+Logger::~Logger() {
+    for (size_t i = 0; i < mLogStreams.size(); ++i) {
+        delete mLogStreams[i];
+    }
+}
+
+String Logger::getDateTime() {
+    static const uint32_t Space = 2;
+    /* DateTime currentDateTime = DateTime::getCurrentUTCTime();
+    std::stringstream stream;
+    stream.fill('0');
+    stream << std::setw(Space) << currentDateTime.getCurrentDay() << "."
+           << std::setw(Space) << currentDateTime.getCurrentMonth() << "."
+           << std::setw(Space * 2) << currentDateTime.getCurrentYear() << " "
+           << std::setw(Space) << currentDateTime.getCurrentHour() << ":"
+           << std::setw(Space) << currentDateTime.getCurrentMinute() << ":"
+           << std::setw(Space) << currentDateTime.getCurrentSeconds();
+           */
+    String todo("none", 4);
+    return todo;
+}
+
+void Logger::StdLogStream::write(const String &msg) {
+    std::cout << msg.c_str();
+}
+
+void tracePrint(const String &domain, const String &file, int line, const String &msg) {
+    String message;
+    message += msg;
+    addTraceInfo(file, line, message);
+    Logger::getInstance()->trace(domain, message);
+}
+
+void debugPrint(const String &domain, const String &file, int line, const String &msg) {
+    String message;
+    message += msg;
+    addTraceInfo(file, line, message);
+    Logger::getInstance()->debug(domain, message);
+}
+
+void infoPrint(const String &domain, const String &file, int line, const String &msg) {
+    String message;
+    message += msg;
+    addTraceInfo(file, line, message);
+    Logger::getInstance()->info(domain, message);
+}
+
+void warnPrint(const String &domain, const String &file, int line, const String &message) {
+    String msg;
+    msg += message;
+    addTraceInfo(file, line, msg);
+    Logger::getInstance()->warn(domain, msg);
+}
+
+void errorPrint(const String &domain, const String &file, int line, const String &message) {
+    String msg;
+    msg += message;
+    addTraceInfo(file, line, msg);
+    Logger::getInstance()->error(domain, msg);
+}
+
+void fatalPrint(const String &domain, const String &file, int line, const String &message) {
+    String msg;
+    msg += message;
+    addTraceInfo(file, line, msg);
+    Logger::getInstance()->fatal(domain, msg);
+}
+
+} // namespace cppcore