common/debug.cpp

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/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "common/debug.h"
#include "common/debug-channels.h"
#include "common/system.h"
#include "common/textconsole.h"
#include "common/algorithm.h"

#include <stdarg.h> // For va_list etc.

// TODO: Move gDebugLevel into namespace Common.
int gDebugLevel = -1;
bool gDebugChannelsOnly = false;

namespace Common {

DECLARE_SINGLETON(DebugManager);

namespace {

struct DebugLevelComperator {
    bool operator()(const DebugManager::DebugChannel &l, const DebugManager::DebugChannel &r) {
        return (l.name.compareToIgnoreCase(r.name) < 0);
    }
};

} // end of anonymous namespace

bool DebugManager::addDebugChannel(uint32 channel, const String &name, const String &description) {
    if (name.equalsIgnoreCase("all")) {
        warning("Debug channel 'all' is reserved for internal use");
        return false;
    }

    if (gDebugChannels.contains(name))
        warning("Duplicate declaration of engine debug channel '%s'", name.c_str());

    gDebugChannels[name] = DebugChannel(channel, name, description);

    return true;
}

void DebugManager::clearAllDebugChannels() {
    gDebugChannelsEnabled = 0;
    gDebugChannels.clear();
}

bool DebugManager::enableDebugChannel(const String &name) {
    DebugChannelMap::iterator i = gDebugChannels.find(name);

    if (i != gDebugChannels.end()) {
        gDebugChannelsEnabled |= i->_value.channel;
        i->_value.enabled = true;

        return true;
    } else {
        return false;
    }
}

bool DebugManager::disableDebugChannel(const String &name) {
    DebugChannelMap::iterator i = gDebugChannels.find(name);

    if (i != gDebugChannels.end()) {
        gDebugChannelsEnabled &= ~i->_value.channel;
        i->_value.enabled = false;

        return true;
    } else {
        return false;
    }
}

DebugManager::DebugChannelList DebugManager::listDebugChannels() {
    DebugChannelList tmp;
    for (DebugChannelMap::iterator i = gDebugChannels.begin(); i != gDebugChannels.end(); ++i)
        tmp.push_back(i->_value);
    sort(tmp.begin(), tmp.end(), DebugLevelComperator());

    return tmp;
}

void DebugManager::enableAllDebugChannels() {
    for (DebugChannelMap::iterator i = gDebugChannels.begin(); i != gDebugChannels.end(); ++i)
        enableDebugChannel(i->_value.name);
}

void DebugManager::disableAllDebugChannels() {
    for (DebugChannelMap::iterator i = gDebugChannels.begin(); i != gDebugChannels.end(); ++i)
        disableDebugChannel(i->_value.name);
}

bool DebugManager::isDebugChannelEnabled(uint32 channel, bool enforce) {
    // Debug level 11 turns on all special debug level messages
    if (gDebugLevel == 11 && enforce == false)
        return true;
    else
        return (gDebugChannelsEnabled & channel) != 0;
}

} // End of namespace Common

bool debugLevelSet(int level) {
    return level <= gDebugLevel;
}

bool debugChannelSet(int level, uint32 debugChannels) {
    if (gDebugLevel != 11 || level == -1)
        if ((level != -1 && level > gDebugLevel) || !(DebugMan.isDebugChannelEnabled(debugChannels, level == -1)))
            return false;

    return true;
}


#ifndef DISABLE_TEXT_CONSOLE

static void debugHelper(const char *s, va_list va, bool caret = true) {
    Common::String buf = Common::String::vformat(s, va);

    if (caret)
        buf += '\n';

    if (g_system)
        g_system->logMessage(LogMessageType::kDebug, buf.c_str());
    // TODO: Think of a good fallback in case we do not have
    // any OSystem yet.
}

void debug(const char *s, ...) {
    va_list va;

    if (gDebugChannelsOnly)
        return;

    va_start(va, s);
    debugHelper(s, va);
    va_end(va);
}

void debug(int level, const char *s, ...) {
    va_list va;

    if (level > gDebugLevel || gDebugChannelsOnly)
        return;

    va_start(va, s);
    debugHelper(s, va);
    va_end(va);

}

void debugN(const char *s, ...) {
    va_list va;

    if (gDebugChannelsOnly)
        return;

    va_start(va, s);
    debugHelper(s, va, false);
    va_end(va);
}

void debugN(int level, const char *s, ...) {
    va_list va;

    if (level > gDebugLevel || gDebugChannelsOnly)
        return;

    va_start(va, s);
    debugHelper(s, va, false);
    va_end(va);
}

void debugC(int level, uint32 debugChannels, const char *s, ...) {
    va_list va;

    // Debug level 11 turns on all special debug level messages
    if (gDebugLevel != 11)
        if (level > gDebugLevel || !(DebugMan.isDebugChannelEnabled(debugChannels)))
            return;

    va_start(va, s);
    debugHelper(s, va);
    va_end(va);
}

void debugCN(int level, uint32 debugChannels, const char *s, ...) {
    va_list va;

    // Debug level 11 turns on all special debug level messages
    if (gDebugLevel != 11)
        if (level > gDebugLevel || !(DebugMan.isDebugChannelEnabled(debugChannels)))
            return;

    va_start(va, s);
    debugHelper(s, va, false);
    va_end(va);
}

void debugC(uint32 debugChannels, const char *s, ...) {
    va_list va;

    // Debug level 11 turns on all special debug level messages
    if (gDebugLevel != 11)
        if (!(DebugMan.isDebugChannelEnabled(debugChannels)))
            return;

    va_start(va, s);
    debugHelper(s, va);
    va_end(va);
}

void debugCN(uint32 debugChannels, const char *s, ...) {
    va_list va;

    // Debug level 11 turns on all special debug level messages
    if (gDebugLevel != 11)
        if (!(DebugMan.isDebugChannelEnabled(debugChannels)))
            return;

    va_start(va, s);
    debugHelper(s, va, false);
    va_end(va);
}

#endif