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/* Copyright © 2007-2016 Jakub Wilk <jwilk@jwilk.net>
*
* This file is part of pdf2djvu.
*
* pdf2djvu is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* pdf2djvu 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.
*/
#include "debug.hh"
#include <iostream>
class DevNull : public std::ostream
{
public:
DevNull()
: std::ostream(nullptr)
{ }
};
static DevNull static_dev_null;
std::ostream &dev_null = static_dev_null;
DebugStream error_log(std::cerr);
static DebugStream null_debug(dev_null);
static DebugStream full_debug(std::clog);
DebugStream &debug(int n, int threshold)
{
if (n <= threshold)
return full_debug;
else
return null_debug;
}
void DebugStream::indent()
{
unsigned int level = this->level;
if (level > 0)
{
while (level-- > 1)
this->ostream << " ";
this->ostream << "- ";
}
}
DebugStream &operator<<(DebugStream &stream, std::ostream& (*pf)(std::ostream&))
{
if (pf == static_cast<std::ostream& (*)(std::ostream&)>(std::endl))
stream.started = false;
stream.ostream << pf;
return stream;
}
// vim:ts=2 sts=2 sw=2 et
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