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/*
Ousía
Copyright (C) 2014, 2015 Benjamin Paaßen, Andreas Stöckel
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <iostream>
#include <sstream>
#include "Logger.hpp"
namespace ousia {
/* Class Logger */
void Logger::log(Severity severity, const std::string &msg,
const std::string &file, int line, int column)
{
// Copy the current severity level
if (static_cast<int>(severity) > static_cast<int>(maxEncounteredSeverity)) {
maxEncounteredSeverity = severity;
}
// Call the actual log message function if the severity is larger or equal
// to the minimum severity
if (static_cast<int>(severity) >= static_cast<int>(minSeverity)) {
process(Message{severity, msg, file, line, column});
}
}
unsigned int Logger::pushFilename(const std::string &name)
{
filenameStack.push(name);
return filenameStack.size();
}
unsigned int Logger::popFilename()
{
filenameStack.pop();
return filenameStack.size();
}
void Logger::unwindFilenameStack(unsigned int pos)
{
while (filenameStack.size() > pos && !filenameStack.empty()) {
filenameStack.pop();
}
}
/* Class TerminalLogger */
/**
* Small class used internally for formated terminal output using ANSI/VT100
* escape codes on supported terminals.
*
* TODO: Deactivate if using windows or use the corresponding API function.
*/
class Terminal {
private:
/**
* If set to false, no control codes are generated.
*/
bool active;
public:
static const int BLACK = 30;
static const int RED = 31;
static const int GREEN = 32;
static const int YELLOW = 33;
static const int BLUE = 34;
static const int MAGENTA = 35;
static const int CYAN = 36;
static const int WHITE = 37;
Terminal(bool active) : active(active) {}
std::string color(int color, bool bright = true) const
{
if (!active) {
return std::string{};
}
std::stringstream ss;
ss << "\x1b[";
if (bright) {
ss << "1;";
}
ss << color << "m";
return ss.str();
}
std::string reset() const
{
if (!active) {
return std::string{};
}
return "\x1b[0m";
}
};
void TerminalLogger::process(const Message &msg)
{
Terminal t(useColor);
// Print the file name
if (msg.hasFile()) {
os << t.color(Terminal::WHITE, true) << msg.file << t.reset();
}
// Print line and column number
if (msg.hasLine()) {
if (msg.hasFile()) {
os << ':';
}
os << t.color(Terminal::WHITE, true) << msg.line
<< t.reset();
if (msg.hasColumn()) {
os << ':' << msg.column;
}
}
// Print the optional seperator
if (msg.hasFile() || msg.hasLine()) {
os << ": ";
}
// Print the severity
switch (msg.severity) {
case Severity::DEBUG:
break;
case Severity::NOTE:
os << t.color(Terminal::CYAN, true) << "note: ";
break;
case Severity::WARNING:
os << t.color(Terminal::MAGENTA, true) << "warning: ";
break;
case Severity::ERROR:
os << t.color(Terminal::RED, true) << "error: ";
break;
case Severity::FATAL_ERROR:
os << t.color(Terminal::RED, true) << "error: ";
break;
}
os << t.reset();
// Print the actual message
os << msg.msg << std::endl;
}
}
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