// print out the given message to the output stream
void print(Inform::Level_t l, const std::string &prefix, const char *msg)
{
if (shouldPrint(l))
{
// Print the prefix, if necessary.
if (prefix.length() > 0)
{
// First print the base part of the prefix
*stream_m << prefix;
// If there are more than 1 contexts, insert the context ID
// into the prefix:
if (Inform::numContexts() > 1)
{
if ((outputContext_m == Inform::allContexts) ||
(outputContext_m == Inform::context()))
{
*stream_m << "{" << Inform::context() << "}";
}
}
// Add on the "> ":
*stream_m << "> ";
}
// Then print the rest of the message and flush the stream
*stream_m << msg << "\n";
stream_m->flush();
}
}
Writer &
Writer::operator<<(
std::ios_base & (*f)(std::ios_base&))
{
if (shouldPrint())
f(getStream());
return *this;
}
/**
* @brief Member function <b>pop</b> is a manipulator which decreases the line
* mask depth by one, but not less than zero(0).
*
* @return a <b>Writer</b> reference to this object
*/
Writer &
Writer::pop() {
if (shouldPrint()) {
getStream() << stk::pop;
m_lineMaskStack.resetDepth().pop();
}
return *this;
}
/**
* @brief Member function <b>push</b> is a manipulator which increases the line
* mask depth by one.
*
* @return a <b>Writer</b> reference to this object
*/
Writer &
Writer::push() {
if (shouldPrint()) {
m_lineMaskStack.pushDepth();
getStream() << stk::push;
}
return *this;
}
/**
* @brief Member function <b>dendl</b> is a manipulator which sets the output
* stream to a new line.<P>
*
* The std::endl manipulator is sent to the output stream.
*
* @return a <b>Writer</b> reference to this object
*/
Writer &
Writer::dendl() {
if (shouldPrint())
getStream() << std::endl;
m_lineMaskStack.resetDepth();
return *this;
}
/// Destructor, prints \b end-of-line before going down.
ContextRealLogger::~ContextRealLogger()
{
if (shouldPrint()) {
// The Trolls set STDERR to O_NONBLOCK, but ignores the EAGAIN
// from write, so if your machine is heavily loaded and the
// terminal can't keep up with our log messages you start to
// lose them. Hack: just set STDERR to block before every
// debug message.
fcntl(STDERR_FILENO, F_SETFL, O_WRONLY);
appendFeatures();
QTextStream::operator<<('\n');
QTextStream(stderr) << data;
}
setDevice(NULL);
}
/**
* @brief Member function <b>shouldPrint</b> returns true if the line should print.
*
* @return a <b>bool</b> of true if this line should be printed.
*/
bool shouldPrint() {
return shouldPrint(m_lineMaskStack.getLineMask());
}
