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/*
* canonify.cc: Part of GNU CSSC.
*
*
* Copyright (C) 1997,2007 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/>.
*
* Functions for canonifying filenames.
*/
#include "cssc.h"
#include "mystring.h"
#include "sccsname.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h> // chdir()
#endif
#include <stddef.h> // chdir()
static mystring
get_current_directory()
{
size_t len = 1;
char *p;
for (;;)
{
if (NULL != (p = new char[len]))
{
const char *q;
if ( NULL != (q=getcwd(p, len)) ) // success!
{
mystring ret(q, strlen(q));
delete[] p;
return ret;
}
else
{
len *= 2; // try a larger buffer.
}
delete[] p;
}
else // allocation failed.
{
return mystring("."); // this is a cop-out really.
}
}
}
mystring
canonify_filename(const char* fname)
{
mystring dirname, basename;
split_filename(fname, dirname, basename);
mystring old_dir(get_current_directory());
chdir(dirname.c_str());
mystring canonical_dir(get_current_directory());
chdir(old_dir.c_str());
return mystring(canonical_dir + mystring("/") + basename);
}
/* Local variables: */
/* mode: c++ */
/* End: */
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