lyx_mirror/src/support/os_unix.C

/**
 * \file os_unix.C
 * This file is part of LyX, the document processor.
 * Licence details can be found in the file COPYING.
 *
 * \author Ruurd A. Reitsma
 *
 * Full author contact details are available in file CREDITS.
 *
 * Various OS specific functions
 */

#include <config.h>

#include "support/os.h"

using std::string;


namespace lyx {
namespace support {
namespace os {

void init(int, char *[])
{}


string current_root()
{
	return "/";
}


string::size_type common_path(string const & p1, string const & p2)
{
	string::size_type i = 0;
	string::size_type p1_len = p1.length();
	string::size_type p2_len = p2.length();
	while (i < p1_len && i < p2_len && p1[i] == p2[i])
		++i;
	if ((i < p1_len && i < p2_len)
	    || (i < p1_len && p1[i] != '/' && i == p2_len)
	    || (i < p2_len && p2[i] != '/' && i == p1_len))
	{
		if (i)
			--i;     // here was the last match
		while (i && p1[i] != '/')
			--i;
	}
	return i;
}


string external_path(string const & p)
{
	return p;
}


string internal_path(string const & p)
{
	return p;
}


bool is_absolute_path(string const & p)
{
	return !p.empty() && p[0] == '/';
}


char const * popen_read_mode()
{
	return "r";
}


string const & nulldev()
{
	static string const nulldev_ = "/dev/null";
	return nulldev_;
}


shell_type shell()
{
	return UNIX;
}

} // namespace os
} // namespace support
} // namespace lyx