BESFSFile.cc

// BESFSFile.cc
 
// This file is part of bes, A C++ back-end server implementation framework
// for the OPeNDAP Data Access Protocol.
 
// Copyright (c) 2004-2009 University Corporation for Atmospheric Research
// Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact University Corporation for Atmospheric Research at
// 3080 Center Green Drive, Boulder, CO 80301
 
// (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005
// Please read the full copyright statement in the file COPYRIGHT_UCAR.
//
// Authors:
//      pwest       Patrick West <pwest@ucar.edu>
//      jgarcia     Jose Garcia <jgarcia@ucar.edu>
 
#include "config.h"
 
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <cerrno>
#include <cstring>
 
#include "BESFSFile.h"
 
using std::string;
 
BESFSFile::BESFSFile(const string &fullPath) :
    _dirName(""), _fileName(""), _baseName(""), _extension("")
{
    breakApart(fullPath);
}
 
BESFSFile::BESFSFile(const string &dirName, const string &fileName) :
    _dirName(dirName), _fileName(fileName), _baseName(""), _extension("")
{
    breakExtension();
}
 
BESFSFile::BESFSFile(const BESFSFile &copyFrom) :
    _dirName(copyFrom._dirName), _fileName(copyFrom._fileName), _baseName(copyFrom._baseName), _extension(
        copyFrom._extension)
{
}
 
BESFSFile::~BESFSFile()
{
}
 
string BESFSFile::getDirName()
{
    return _dirName;
}
 
string BESFSFile::getFileName()
{
    return _fileName;
}
 
string BESFSFile::getBaseName()
{
    return _baseName;
}
 
string BESFSFile::getExtension()
{
    return _extension;
}
 
string BESFSFile::getFullPath()
{
    return _dirName + "/" + _fileName;
}
 
void BESFSFile::breakApart(const string &fullPath)
{
    string::size_type pos = fullPath.rfind("/");
    if (pos != string::npos) {
        _dirName = fullPath.substr(0, pos);
        _fileName = fullPath.substr(pos + 1, fullPath.size() - pos);
    }
    else {
        _dirName = "./";
        _fileName = fullPath;
    }
 
    breakExtension();
}
 
void BESFSFile::breakExtension()
{
    string::size_type pos = _fileName.rfind(".");
    if (pos != string::npos) {
        _baseName = _fileName.substr(0, pos);
        _extension = _fileName.substr(pos + 1, _fileName.size() - pos);
    }
    else {
        _baseName = _fileName;
    }
}
 
bool BESFSFile::exists(string &reason)
{
    bool ret = false;
    if (!access(getFullPath().c_str(), F_OK)) {
        ret = true;
    }
    else {
        char *err = strerror(errno);
        if (err) {
            reason += err;
        }
        else {
            reason += "Unknown error";
        }
    }
    return ret;
}
 
bool BESFSFile::isReadable(string &reason)
{
    bool ret = false;
    if (!access(getFullPath().c_str(), R_OK)) {
        ret = true;
    }
    else {
        char *err = strerror(errno);
        if (err) {
            reason += err;
        }
        else {
            reason += "Unknown error";
        }
    }
    return ret;
}
 
bool BESFSFile::isWritable(string &reason)
{
    bool ret = false;
    if (!access(getFullPath().c_str(), W_OK)) {
        ret = true;
    }
    else {
        char *err = strerror(errno);
        if (err) {
            reason += err;
        }
        else {
            reason += "Unknown error";
        }
    }
    return ret;
}
 
bool BESFSFile::isExecutable(string &reason)
{
    bool ret = false;
    if (!access(getFullPath().c_str(), X_OK)) {
        ret = true;
    }
    else {
        char *err = strerror(errno);
        if (err) {
            reason += err;
        }
        else {
            reason += "Unknown error";
        }
    }
    return ret;
}
 
bool BESFSFile::hasDotDot()
{
    bool ret = false;
    string fp = getFullPath();
    if (fp.find("..") != string::npos) {
        ret = true;
    }
    return ret;
}