annotate base/Debug.cpp @ 1396:0bbf91b05164

Debug output
author Chris Cannam
date Sun, 05 Mar 2017 17:16:04 +0000
parents 838a45cff62d
children 04a198887a3d
rev   line source
Chris@685 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@685 2
Chris@685 3 /*
Chris@685 4 Sonic Visualiser
Chris@685 5 An audio file viewer and annotation editor.
Chris@685 6 Centre for Digital Music, Queen Mary, University of London.
Chris@685 7 This file copyright 2010-2011 Chris Cannam and QMUL.
Chris@685 8
Chris@685 9 This program is free software; you can redistribute it and/or
Chris@685 10 modify it under the terms of the GNU General Public License as
Chris@685 11 published by the Free Software Foundation; either version 2 of the
Chris@685 12 License, or (at your option) any later version. See the file
Chris@685 13 COPYING included with this distribution for more information.
Chris@685 14 */
Chris@685 15
Chris@685 16 #include "Debug.h"
Chris@685 17 #include "ResourceFinder.h"
Chris@685 18
Chris@1061 19 #include <QMutex>
Chris@1061 20 #include <QDir>
Chris@685 21 #include <QUrl>
Chris@685 22 #include <QCoreApplication>
Chris@685 23
Chris@1247 24 #include <stdexcept>
Chris@685 25
Chris@1275 26 static SVDebug *svdebug = 0;
Chris@1275 27 static SVCerr *svcerr = 0;
Chris@950 28 static QMutex mutex;
Chris@950 29
Chris@1061 30 SVDebug &getSVDebug() {
Chris@1061 31 mutex.lock();
Chris@1275 32 if (!svdebug) {
Chris@1275 33 svdebug = new SVDebug();
Chris@1061 34 }
Chris@1061 35 mutex.unlock();
Chris@1275 36 return *svdebug;
Chris@1061 37 }
Chris@1061 38
Chris@1275 39 SVCerr &getSVCerr() {
Chris@1275 40 mutex.lock();
Chris@1275 41 if (!svcerr) {
Chris@1275 42 if (!svdebug) {
Chris@1275 43 svdebug = new SVDebug();
Chris@1275 44 }
Chris@1275 45 svcerr = new SVCerr(*svdebug);
Chris@1275 46 }
Chris@1275 47 mutex.unlock();
Chris@1275 48 return *svcerr;
Chris@1275 49 }
Chris@1275 50
Chris@1275 51 bool SVDebug::m_silenced = false;
Chris@1275 52 bool SVCerr::m_silenced = false;
Chris@1275 53
Chris@1061 54 SVDebug::SVDebug() :
Chris@1061 55 m_prefix(0),
Chris@1061 56 m_ok(false),
Chris@1275 57 m_eol(true)
Chris@685 58 {
Chris@1275 59 if (m_silenced) return;
Chris@1275 60
Chris@1247 61 if (qApp->applicationName() == "") {
Chris@1247 62 cerr << "ERROR: Can't use SVDEBUG before setting application name" << endl;
Chris@1247 63 throw std::logic_error("Can't use SVDEBUG before setting application name");
Chris@1247 64 }
Chris@1247 65
Chris@951 66 QString pfx = ResourceFinder().getUserResourcePrefix();
Chris@951 67 QDir logdir(QString("%1/%2").arg(pfx).arg("log"));
Chris@951 68
Chris@1061 69 m_prefix = strdup(QString("[%1]")
Chris@1061 70 .arg(QCoreApplication::applicationPid())
Chris@1061 71 .toLatin1().data());
Chris@951 72
Chris@1058 73 //!!! what to do if mkpath fails?
Chris@1058 74 if (!logdir.exists()) logdir.mkpath(logdir.path());
Chris@1058 75
Chris@1061 76 QString fileName = logdir.path() + "/sv-debug.log";
Chris@1061 77
Chris@1061 78 m_stream.open(fileName.toLocal8Bit().data(), std::ios_base::out);
Chris@1061 79
Chris@1061 80 if (!m_stream) {
Chris@1061 81 QDebug(QtWarningMsg) << (const char *)m_prefix
Chris@1061 82 << "Failed to open debug log file "
Chris@1061 83 << fileName << " for writing";
Chris@951 84 } else {
Chris@1299 85 // cerr << m_prefix << ": Log file is " << fileName << endl;
Chris@1061 86 m_ok = true;
Chris@685 87 }
Chris@1061 88 }
Chris@685 89
Chris@1061 90 SVDebug::~SVDebug()
Chris@1061 91 {
Chris@1275 92 if (m_stream) m_stream.close();
Chris@685 93 }
Chris@685 94
Chris@685 95 QDebug &
Chris@685 96 operator<<(QDebug &dbg, const std::string &s)
Chris@685 97 {
Chris@685 98 dbg << QString::fromUtf8(s.c_str());
Chris@685 99 return dbg;
Chris@685 100 }
Chris@685 101
Chris@685 102 std::ostream &
Chris@685 103 operator<<(std::ostream &target, const QString &str)
Chris@685 104 {
Chris@846 105 return target << str.toStdString();
Chris@685 106 }
Chris@685 107
Chris@685 108 std::ostream &
Chris@685 109 operator<<(std::ostream &target, const QUrl &u)
Chris@685 110 {
Chris@846 111 return target << "<" << u.toString().toStdString() << ">";
Chris@685 112 }
Chris@685 113