view src/debug.cpp @ 633:db62a0cb3037

* Added setting to specify that diff command should be run once for each selected file, rather than passing all file names to diff command (p4merge doesn't like being given many files)

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    EasyMercurial

    Based on HgExplorer by Jari Korhonen
    Copyright (c) 2010 Jari Korhonen
    Copyright (c) 2012 Chris Cannam
    Copyright (c) 2012 Queen Mary, University of London
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#include "debug.h"

#include <QString>
#include <QUrl>
#include <QMutex>
#include <QMutexLocker>
#include <QFile>
#include <QDir>
#include <QCoreApplication>
#include <QDateTime>
#include <QDesktopServices>

#include <cstdio>

QDebug &
getEasyHgDebug()
{
    static QFile *logFile = 0;
    static QDebug *debug = 0;
    static QMutex mutex;
    static char *prefix;
    mutex.lock();
    if (!debug) {
        prefix = new char[20];
        sprintf(prefix, "[%lu]", (unsigned long)QCoreApplication::applicationPid());
        QString logFileName = QDir::homePath() + "/.easyhg.log"; // the fallback
        QString logDir = QDesktopServices::storageLocation
            (QDesktopServices::DataLocation);
        if (logDir != "" &&
            (QDir(logDir).exists() ||
             QDir().mkpath(logDir))) {
            logFileName = logDir + "/debug.log";
        }
        logFile = new QFile(logFileName);
        if (logFile->open(QIODevice::WriteOnly | QIODevice::Truncate)) {
            QDebug(QtDebugMsg) << (const char *)prefix
                               << "Opened debug log file "
                               << logFile->fileName();
            debug = new QDebug(logFile);
        } else {
            QDebug(QtWarningMsg) << (const char *)prefix
                                 << "Failed to open debug log file "
                                 << logFile->fileName()
                                 << " for writing, using console debug instead";
            debug = new QDebug(QtDebugMsg);
            delete logFile;
            logFile = 0;
        }
        *debug << endl << (const char *)prefix << "Log started at "
               << QDateTime::currentDateTime().toString();
    }
    mutex.unlock();

    QDebug &dref = *debug;
    return dref << endl << (const char *)prefix;
}

QDebug &
operator<<(QDebug &dbg, const std::string &s)
{
    dbg << QString::fromUtf8(s.c_str());
    return dbg;
}

std::ostream &
operator<<(std::ostream &target, const QString &str)
{
    return target << str.toLocal8Bit().data();
}

std::ostream &
operator<<(std::ostream &target, const QUrl &u)
{
    return target << "<" << u.toString() << ">";
}