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/*
* realpwd.cc: Part of GNU CSSC.
*
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007,
* 2008, 2009, 2010, 2001, 2014, 2019 Free Software Foundation, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Program for getting the canonical form of the current directory.
*/
#include "config.h"
#include <stddef.h>
#include <assert.h>
#include <unistd.h>
#include <string.h>
static const char *
get_current_directory()
{
size_t len = 1;
char *p;
for (;;)
{
if (NULL != (p = new char[len]))
{
if ( NULL != getcwd(p, len) ) // success!
{
return p;
}
else
{
len *= 2; // try a larger buffer.
}
delete[] p;
}
else // allocation failed.
{
return "."; // this is a cop-out really.
}
}
}
int main(int argc, char *argv[])
{
const char newline[1] = { '\n' };
const char *dir = get_current_directory();
(void) argc;
(void) argv;
write(1, dir, strlen(dir));
write(1, newline, 1);
return 0;
}
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