textfilelogger.cpp

//##################################################################################################
//  ALib C++ Library
//
//  Copyright 2013-2025 A-Worx GmbH, Germany
//  Published under 'Boost Software License' (a free software license, see LICENSE.txt)
//##################################################################################################
#include "alib_precompile.hpp"
#if !defined(ALIB_C20_MODULES) || ((ALIB_C20_MODULES != 0) && (ALIB_C20_MODULES != 1))
#   error "Symbol ALIB_C20_MODULES has to be given to the compiler as either 0 or 1"
#endif
#if ALIB_C20_MODULES
    module;
#endif
//========================================= Global Fragment ========================================
#ifndef H_ALIB_ALOX
#include "alib/strings/strings.prepro.hpp"
#include "alib/alox/alox.prepro.hpp"
#endif
#include <fstream>
//============================================== Module ============================================
#if ALIB_C20_MODULES
    module ALib.ALox.Impl;
    import   ALib.Lang;
    import   ALib.Strings;
#else
#   include "ALib.Lang.H"
#   include "ALib.Strings.H"
#   include "ALib.ALox.H"
#   include "ALib.ALox.Impl.H"
#endif
//========================================== Implementation ========================================
using namespace alib;
 
TextFileLogger::TextFileLogger( const alib::String&  fileName,
                                const alib::NString& loggerName )
: PlainTextLogger( loggerName, "TEXTFILE" )
, ma( ALIB_DBG("TextFileLogger",) 8 ) {
    FileName << fileName;
 
    // test open file for test
    ALIB_STRINGS_TO_NARROW(FileName,nFileName,1024)
    auto* os= new std::ofstream( nFileName, std::ios::app );
    if ( !os->is_open() ) {
        LastSystemError= SystemErrors(errno);
        ALIB_WARNING( "ALOX", "Could not open file: \"{}\". System error code: {}",
                      FileName, LastSystemError )
    }
    else
        // test run OK
        os->close();
 
    delete os;
}
 
void TextFileLogger::openFile() {
    ALIB_STRINGS_TO_NARROW(FileName,nFileName,1024)
    ofs= new std::ofstream( nFileName, std::ios::app );
    if ( !ofs->is_open() ) {
        LastSystemError= SystemErrors(errno);
        ALIB_WARNING( "ALOX", "Could not open file: \"{}\". System error code: {}",
                      FileName, LastSystemError )
        delete ofs;  ofs= nullptr;
        return;
    }
 
    LastSystemError= SystemErrors::None;
    writer.Construct( *ofs, ma );
}
 
void TextFileLogger::closeFile() {
    if( ofs == nullptr )
        return;
 
    writer.Destruct();
    ofs->close();
    delete ofs;
}
 
 
void TextFileLogger::notifyMultiLineOp( lang::Phase phase ) {
    // save state (to have it in logText)
    currentlyInMultiLineOp= (phase == lang::Phase::Begin);
 
    // open/close the file
    if ( phase == lang::Phase::Begin )
        openFile();
    else if( ofs != nullptr )
        closeFile();
}
 
bool TextFileLogger::notifyPlainTextLogOp( lang::Phase phase ) {
    if ( ofs != nullptr && phase == lang::Phase::End )
        (*ofs) << std::endl;
 
    // open/close
    if( !currentlyInMultiLineOp ) {
        if ( phase == lang::Phase::Begin )
            openFile();
        else
            closeFile();
    }
 
    return LastSystemError == SystemErrors::None;
}
 
integer TextFileLogger::logPlainTextPart( const String& buffer, integer start, integer length ) {
    if (ofs == nullptr || LastSystemError != SystemErrors::None)
        return 0;
    integer printedWidth;
    writer->Write( buffer.Substring<NC>( start, length ), &printedWidth );
    return printedWidth;
}