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/*
* Copyright 2002. Vladimir Prus
* Copyright 2005. Rene Rivera
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*/
#include "cwd.h"
#include "jam.h"
#include "mem.h"
#include "pathsys.h"
#include <assert.h>
#include <errno.h>
#include <limits.h>
/* MinGW on Windows declares PATH_MAX in limits.h */
#if defined( NT ) && !defined( __GNUC__ )
# include <direct.h>
# define PATH_MAX _MAX_PATH
#else
# include <unistd.h>
# if defined( __COMO__ )
# include <linux/limits.h>
# endif
#endif
#ifndef PATH_MAX
# define PATH_MAX 1024
#endif
static OBJECT * cwd_;
void cwd_init( void )
{
int buffer_size = PATH_MAX;
char * cwd_buffer = 0;
int error;
assert( !cwd_ );
do
{
char * const buffer = BJAM_MALLOC_RAW( buffer_size );
cwd_buffer = getcwd( buffer, buffer_size );
error = errno;
if ( cwd_buffer )
{
/* We store the path using its canonical/long/key format. */
OBJECT * const cwd = object_new( cwd_buffer );
cwd_ = path_as_key( cwd );
object_free( cwd );
}
buffer_size *= 2;
BJAM_FREE_RAW( buffer );
}
while ( !cwd_ && error == ERANGE );
if ( !cwd_ )
{
perror( "can not get current working directory" );
exit( EXITBAD );
}
}
OBJECT * cwd( void )
{
assert( cwd_ );
return cwd_;
}
void cwd_done( void )
{
assert( cwd_ );
object_free( cwd_ );
cwd_ = NULL;
}
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