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// -*- related-file-name: "../include/lcdf/filename.hh" -*-
/* filename.{cc,hh} -- filenames
*
* Copyright (c) 1999-2011 Eddie Kohler
*
* 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 2 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.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <lcdf/filename.hh>
#include <lcdf/landmark.hh>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifndef PATHNAME_SEPARATOR
# define PATHNAME_SEPARATOR '/'
#endif
#ifndef CURRENT_DIRECTORY
# define CURRENT_DIRECTORY "./"
#endif
Filename::Filename(const String &fn)
: _path(fn), _actual(0)
{
if (!fn)
return;
int last_slash = fn.find_right(PATHNAME_SEPARATOR);
if (last_slash >= 0) {
_dir = _path.substring(0, last_slash + 1);
_name = _path.substring(last_slash + 1);
} else {
_dir = CURRENT_DIRECTORY;
_name = fn;
}
assert(_dir.back() == PATHNAME_SEPARATOR);
}
Filename::Filename(const String &dir, const String &name)
: _name(name), _actual(0)
{
if (!name)
return;
if (_name[0] == PATHNAME_SEPARATOR)
_dir = "";
else if (dir) {
_dir = dir;
if (dir.back() != PATHNAME_SEPARATOR)
_dir += PATHNAME_SEPARATOR;
} else
_dir = CURRENT_DIRECTORY;
int slash = name.find_right(PATHNAME_SEPARATOR);
if (slash >= 0) {
_dir += name.substring(0, slash + 1);
_name = name.substring(slash + 1);
}
_path = _dir + _name;
}
Filename::Filename(FILE *actual, const String &name)
: _name(name), _path(name), _actual(actual)
{
}
String
Filename::extension() const
{
int dot = _name.find_right('.');
while (dot > 0 && _name[dot - 1] == '.')
dot--;
if (dot > 0)
return _name.substring(dot + 1);
else
return String();
}
String
Filename::base() const
{
if (String ex = extension())
return _name.substring(0, _name.length() - ex.length() - 1);
else
return _name;
}
FILE *
Filename::open_read(bool binary) const
{
if (_actual || !_path)
return _actual;
else
return fopen(_path.c_str(), binary ? "rb" : "r");
}
bool
Filename::readable() const
{
struct stat s;
if (!_path)
return false;
return _actual || (_path && (stat(_path.c_str(), &s) >= 0));
}
FILE *
Filename::open_write(bool binary) const
{
if (_actual || !_path)
return _actual;
else
return fopen(_path.c_str(), binary ? "wb" : "w");
}
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