300 lines
6.7 KiB
C++
300 lines
6.7 KiB
C++
/*
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* synergy -- mouse and keyboard sharing utility
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* Copyright (C) 2002 Chris Schoeneman
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*
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* This package is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* found in the file COPYING that should have accompanied this file.
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*
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* This package is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "CLog.h"
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#include "CString.h"
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#include "CStringUtil.h"
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#include "LogOutputters.h"
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#include "CArch.h"
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#include "Version.h"
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#include <cstdio>
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#include <cstring>
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#include <iostream>
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#include <ctime>
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// names of priorities
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static const char* g_priority[] = {
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"FATAL",
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"ERROR",
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"WARNING",
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"NOTE",
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"INFO",
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"DEBUG",
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"DEBUG1",
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"DEBUG2",
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"DEBUG3",
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"DEBUG4",
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"DEBUG5"
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};
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// number of priorities
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static const int g_numPriority = (int)(sizeof(g_priority) / sizeof(g_priority[0]));
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// the default priority
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#if defined(NDEBUG)
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static const int g_defaultMaxPriority = 4;
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#else
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static const int g_defaultMaxPriority = 5;
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#endif
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// length of longest string in g_priority
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static const int g_maxPriorityLength = 7;
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// length of suffix string (": ")
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static const int g_prioritySuffixLength = 2;
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// amount of padded required to fill in the priority prefix
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static const int g_priorityPad = g_maxPriorityLength +
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g_prioritySuffixLength;
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//
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// CLog
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//
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CLog* CLog::s_log = NULL;
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CLog::CLog()
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{
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assert(s_log == NULL);
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// create mutex for multithread safe operation
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m_mutex = ARCH->newMutex();
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// other initalization
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m_maxPriority = g_defaultMaxPriority;
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m_maxNewlineLength = 0;
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insert(new CConsoleLogOutputter);
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}
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CLog::~CLog()
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{
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// clean up
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for (COutputterList::iterator index = m_outputters.begin();
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index != m_outputters.end(); ++index) {
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delete *index;
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}
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for (COutputterList::iterator index = m_alwaysOutputters.begin();
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index != m_alwaysOutputters.end(); ++index) {
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delete *index;
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}
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ARCH->closeMutex(m_mutex);
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s_log = NULL;
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}
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CLog*
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CLog::getInstance()
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{
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// note -- not thread safe; client must initialize log safely
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if (s_log == NULL) {
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s_log = new CLog;
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}
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return s_log;
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}
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const char*
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CLog::getFilterName() const
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{
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return getFilterName(getFilter());
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}
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const char*
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CLog::getFilterName(int level) const
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{
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return g_priority[level];
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}
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void
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CLog::print(const char* file, int line, const char* fmt, ...)
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{
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// check if fmt begins with a priority argument
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ELevel priority = kINFO;
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if (fmt[0] == '%' && fmt[1] == 'z') {
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// 060 in octal is 0 (48 in decimal), so subtracting this converts ascii
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// number it a true number. we could use atoi instead, but this is how
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// it was done originally.
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priority = (ELevel)(fmt[2] - '\060'); // TODO: fix this shit
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// move the pointer on past the debug priority char
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fmt += 3;
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}
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// done if below priority threshold
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if (priority > getFilter()) {
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return;
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}
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// compute prefix padding length
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char stack[1024];
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// compute suffix padding length
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int sPad = m_maxNewlineLength;
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// print to buffer, leaving space for a newline at the end and prefix
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// at the beginning.
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char* buffer = stack;
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int len = (int)(sizeof(stack) / sizeof(stack[0]));
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while (true) {
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// try printing into the buffer
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va_list args;
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va_start(args, fmt);
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int n = ARCH->vsnprintf(buffer, len - sPad, fmt, args);
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va_end(args);
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// if the buffer wasn't big enough then make it bigger and try again
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if (n < 0 || n > (int)len) {
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if (buffer != stack) {
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delete[] buffer;
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}
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len *= 2;
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buffer = new char[len];
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}
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// if the buffer was big enough then continue
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else {
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break;
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}
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}
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// print the prefix to the buffer. leave space for priority label.
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if (file != NULL) {
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char message[2048];
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struct tm *tm;
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char tmp[220];
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time_t t;
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time(&t);
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tm = localtime(&t);
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sprintf(tmp, "%04i-%02i-%02iT%02i:%02i:%02i", tm->tm_year + 1900, tm->tm_mon+1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
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//strcpy(msg, tmp);
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sprintf(message, "%s %s: %s\n\t%s,%d", tmp, g_priority[priority], buffer, file, line);
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// buffer[pPad - 1] = ' ';
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// discard file and line if priority < 0
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/*if (priority < 0) {
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message += pPad - g_priorityPad;
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}
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*/
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// output buffer
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output(priority, message);
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} else {
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output(priority, buffer);
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}
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// clean up
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if (buffer != stack) {
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delete[] buffer;
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}
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}
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void
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CLog::insert(ILogOutputter* outputter, bool alwaysAtHead)
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{
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assert(outputter != NULL);
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CArchMutexLock lock(m_mutex);
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if (alwaysAtHead) {
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m_alwaysOutputters.push_front(outputter);
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}
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else {
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m_outputters.push_front(outputter);
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}
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outputter->open(kAppVersion);
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// Issue 41
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// don't show log unless user requests it, as some users find this
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// feature irritating (i.e. when they lose network connectivity).
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// in windows the log window can be displayed by selecting "show log"
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// from the synergy system tray icon.
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// if this causes problems for other architectures, then a different
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// work around should be attempted.
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//outputter->show(false);
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}
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void
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CLog::remove(ILogOutputter* outputter)
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{
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CArchMutexLock lock(m_mutex);
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m_outputters.remove(outputter);
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m_alwaysOutputters.remove(outputter);
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}
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void
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CLog::pop_front(bool alwaysAtHead)
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{
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CArchMutexLock lock(m_mutex);
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COutputterList* list = alwaysAtHead ? &m_alwaysOutputters : &m_outputters;
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if (!list->empty()) {
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delete list->front();
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list->pop_front();
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}
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}
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bool
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CLog::setFilter(const char* maxPriority)
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{
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if (maxPriority != NULL) {
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for (int i = 0; i < g_numPriority; ++i) {
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if (strcmp(maxPriority, g_priority[i]) == 0) {
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setFilter(i);
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return true;
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}
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}
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return false;
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}
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return true;
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}
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void
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CLog::setFilter(int maxPriority)
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{
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CArchMutexLock lock(m_mutex);
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m_maxPriority = maxPriority;
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}
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int
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CLog::getFilter() const
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{
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CArchMutexLock lock(m_mutex);
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return m_maxPriority;
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}
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void
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CLog::output(ELevel priority, char* msg)
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{
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assert(priority >= -1 && priority < g_numPriority);
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assert(msg != NULL);
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if (!msg) return;
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CArchMutexLock lock(m_mutex);
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COutputterList::const_iterator i;
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for (i = m_alwaysOutputters.begin(); i != m_alwaysOutputters.end(); ++i) {
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// write to outputter
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(*i)->write(priority, msg);
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}
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for (i = m_outputters.begin(); i != m_outputters.end(); ++i) {
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// write to outputter and break out of loop if it returns false
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if (!(*i)->write(priority, msg)) {
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break;
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}
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}
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} |