String Verbose::Colorize(rcString inMsg, Color inColor, Style inStyle)
{
if (!ShouldUseColor())
return inMsg;
std::stringstream s;
s << "\033["
<< inStyle
<< ";"
<< inColor
<< "m"
<< inMsg
<< "\033[0m";
return s.str();
}
// Helpers for printing colored strings to stdout. Note that on Windows, we
// cannot simply emit special characters and have the terminal change colors.
// This routine must actually emit the characters rather than return a string
// that would be colored when printed, as can be done on Linux.
void ColoredPrintf(LogogColor color, const char* fmt, ...)
{
va_list args;
va_start(args, fmt);
#if !defined(LOGOG_FLAVOR_WINDOWS) && !defined(LOGOG_FLAVOR_POSIX)
const bool use_color = false;
#else
static const bool in_color_mode =
ShouldUseColor(true);//isatty(fileno(stdout)) != 0);
const bool use_color = in_color_mode && (color != COLOR_DEFAULT);
#endif // !LOGOG_FLAVOR_POSIX && !LOGOG_FLAVOR_WINDOWS
// The '!= 0' comparison is necessary to satisfy MSVC 7.1.
if (!use_color) {
vprintf(fmt, args);
va_end(args);
return;
}
#ifdef LOGOG_FLAVOR_WINDOWS
const HANDLE stdout_handle = GetStdHandle(STD_OUTPUT_HANDLE);
// Gets the current text color.
CONSOLE_SCREEN_BUFFER_INFO buffer_info;
GetConsoleScreenBufferInfo(stdout_handle, &buffer_info);
const WORD old_color_attrs = buffer_info.wAttributes;
// We need to flush the stream buffers into the console before each
// SetConsoleTextAttribute call lest it affect the text that is already
// printed but has not yet reached the console.
fflush(stdout);
SetConsoleTextAttribute(stdout_handle,
GetColorAttribute(color) | FOREGROUND_INTENSITY);
vprintf(fmt, args);
fflush(stdout);
// Restores the text color.
SetConsoleTextAttribute(stdout_handle, old_color_attrs);
#else
printf("\033[0;3%sm", GetAnsiColorCode(color));
vprintf(fmt, args);
printf("\033[m"); // Resets the terminal to default.
#endif // LOGOG_FLAVOR_WINDOWS
va_end(args);
}
Verbose::Verbose():
mIsStartOfLine(true)
{
sShouldUseColor = ShouldUseColor();
}
