ConsoleLogger.cpp

#include "ConsoleLogger.h"
 
#include "../Platform/DebugUtils.h"
 
#include <algorithm>
#include <cstdio>
 
namespace
{
  Cogs::Logging::ConsoleLogger* inst = nullptr;
}
 
Cogs::Logging::ConsoleLogger::ConsoleLogger() {
  assert(!inst);
  inst = this;
#if defined( __APPLE__ )
  use_color = !isBeingDebugged();
#endif
}
 
Cogs::Logging::ConsoleLogger::~ConsoleLogger() {
  assert(inst == this);
  inst = nullptr;
}
 
Cogs::Logging::ConsoleLogger& Cogs::Logging::ConsoleLogger::instance() {
  if (!inst) {
    new ConsoleLogger;
  }
  return *inst;
}
 
void Cogs::Logging::ConsoleLogger::outputMessage(const std::string& prefix, const Message& message) {
  thread_local static char  buffer[500] = {};
  const char *cat = use_color ? getCategoryNameColor(message.category) : getCategoryName(message.category);
  int n = 0;
  if(outputFilenames && message.file) {
    n = std::snprintf(buffer, sizeof(buffer) - 1, "[%s][%s][%s:%d]%s ", cat, message.source.c_str(), message.file, message.line, prefix.c_str());
  } 
  else {
    n = std::snprintf(buffer, sizeof(buffer) - 1, "[%s][%s]%s ", cat, message.source.c_str(), prefix.c_str());
  }
 
  // Guard against overflow if very long prefix generated. Format error < 0 not probable.
  n = std::max(n, 0);
  n = std::min(n, int(sizeof(buffer)));
 
  LockGuard lock(mutex);
 
  std::fwrite(buffer, 1, n, stderr);
  std::fwrite(message.message.c_str(), 1, message.message.size(), stderr);
  std::fwrite("\n", 1, 1, stderr);
}