filepath.cpp

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/*
  Zipios++ - a small C++ library that provides easy access to .zip files.
 
  Copyright (C) 2000-2007  Thomas Sondergaard
  Copyright (C) 2015-2017  Made to Order Software Corporation
 
  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
*/
 
#include "zipios/filepath.hpp"
 
#include "zipios_common.hpp"
 
#include <memory.h>
 
 
namespace zipios
{
 
 
namespace
{
 
 
std::string pruneTrailingSeparator(std::string path)
{
    if(path.size() > 0)
    {
        if(path[path.size() - 1] == g_separator)
        {
            path.erase(path.size() - 1);
        }
    }
 
    return path;
}
 
 
} // no name namespace
 
 
 
FilePath::FilePath(std::string const& path)
    : m_path(pruneTrailingSeparator(path))
    //, m_stat() -- see below
    //, m_checked(false) -- auto-init
    //, m_exists(false) -- auto-init
{
    memset(&m_stat, 0, sizeof(m_stat));
}
 
 
void FilePath::check() const
{
    if(!m_checked)
    {
        m_checked = true;
 
        memset(&m_stat, 0, sizeof(m_stat));
        m_exists = stat(m_path.c_str(), &m_stat) == 0;
    }
}
 
 
FilePath& FilePath::operator = (std::string const& path)
{
    m_path = pruneTrailingSeparator(path);
    return *this;
}
 
 
FilePath::operator std::string () const
{
    return m_path;
}
 
 
FilePath FilePath::operator + (FilePath const& rhs) const
{
    if(m_path.empty())
    {
        return rhs;
    }
 
    if(rhs.m_path.empty())
    {
        return *this;
    }
 
    if(rhs.m_path[0] == g_separator)
    {
        return m_path + rhs.m_path;
    }
 
    return m_path + g_separator + rhs.m_path;
}
 
 
bool FilePath::operator == (char const *rhs) const
{
    return m_path == rhs;
}
 
 
bool operator == (char const *lhs, FilePath const& rhs)
{
    return lhs == rhs.m_path;
}
 
 
bool FilePath::operator == (std::string const& rhs) const
{
    return m_path == rhs;
}
 
 
bool operator == (std::string const& lhs, FilePath const& rhs)
{
    return lhs == rhs.m_path;
}
 
 
bool FilePath::operator == (FilePath const& rhs) const
{
    return m_path == rhs.m_path;
}
 
 
std::string FilePath::filename() const
{
    std::string::size_type const pos(m_path.find_last_of(g_separator));
    if(pos != std::string::npos)
    {
        return m_path.substr(pos + 1);
    }
 
    return m_path;
}
 
 
size_t FilePath::length() const
{
    return m_path.length();
}
 
 
size_t FilePath::size() const
{
    return length();
}
 
 
bool FilePath::exists() const
{
    check();
    return m_exists;
}
 
 
bool FilePath::isRegular() const
{
    check();
    return m_exists && S_ISREG(m_stat.st_mode);
}
 
 
bool FilePath::isDirectory() const
{
    check();
    return m_exists && S_ISDIR(m_stat.st_mode);
}
 
 
bool FilePath::isCharSpecial() const
{
    check();
    return m_exists && S_ISCHR(m_stat.st_mode);
}
 
 
bool FilePath::isBlockSpecial() const
{
    check();
    return m_exists && S_ISBLK(m_stat.st_mode);
}
 
 
bool FilePath::isSocket() const
{
    check();
    return m_exists && S_ISSOCK(m_stat.st_mode);
}
 
 
bool FilePath::isFifo() const
{
    check();
    return m_exists && S_ISFIFO(m_stat.st_mode);
}
 
 
size_t FilePath::fileSize() const
{
    check();
    return m_stat.st_size;
}
 
 
std::time_t FilePath::lastModificationTime() const
{
    check();
    return m_stat.st_mtime;
}
 
 
std::ostream& operator << (std::ostream& os, FilePath const& path)
{
    os << static_cast<std::string>(path);
    return os;
}
 
} // namespace
 
// Local Variables:
// mode: cpp
// indent-tabs-mode: nil
// c-basic-offset: 4
// tab-width: 4
// End:
 
// vim: ts=4 sw=4 et