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// file : butl/path.ixx -*- C++ -*-
// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifdef _WIN32
# include <cctype> // std::tolower
# include <cwctype> // std::towlower
#endif
namespace butl
{
#ifdef _WIN32
template <>
inline char path_traits<char>::
tolower (char c)
{
return std::tolower (c);
}
template <>
inline wchar_t path_traits<wchar_t>::
tolower (wchar_t c)
{
return std::towlower (c);
}
#endif
// @@ Should only enable_if P is basic_path<C, K1>.
//
template <class P, class C, class K>
inline P
path_cast (const basic_path<C, K>& p)
{
return P (p.path_, false);
}
template <class P, class C, class K>
inline P
path_cast (basic_path<C, K>&& p)
{
return P (std::move (p.path_), false);
}
template <typename C, typename K>
inline bool basic_path<C, K>::
simple () const
{
return
#ifndef _WIN32
root () ||
#endif
traits::find_separator (this->path_) == string_type::npos;
}
template <typename C, typename K>
inline bool basic_path<C, K>::
absolute () const
{
#ifdef _WIN32
return this->path_.size () > 1 && this->path_[1] == ':';
#else
return !this->path_.empty () && traits::is_separator (this->path_[0]);
#endif
}
template <typename C, typename K>
inline bool basic_path<C, K>::
root () const
{
#ifdef _WIN32
return this->path_.size () == 2 && this->path_[1] == ':';
#else
return this->path_.size () == 1 && traits::is_separator (this->path_[0]);
#endif
}
template <typename C, typename K>
inline bool basic_path<C, K>::
sub (const basic_path& p) const
{
size_type n (p.path_.size ());
if (n == 0)
return true;
size_type m (this->path_.size ());
// The second condition guards against the /foo-bar vs /foo case.
//
return m >= n &&
traits::compare (this->path_.c_str (), n, p.path_.c_str (), n) == 0 &&
(traits::is_separator (p.path_.back ()) || // p ends with a separator
m == n || // *this == p
traits::is_separator (this->path_[n])); // next char is a separator
}
template <typename C, typename K>
inline bool basic_path<C, K>::
sup (const basic_path& p) const
{
size_type n (p.path_.size ());
if (n == 0)
return true;
size_type m (this->path_.size ());
// The second condition guards against the /foo-bar vs bar case.
//
return m >= n &&
traits::compare (
this->path_.c_str () + m - n, n, p.path_.c_str (), n) == 0 &&
(m == n || // *this == p
traits::is_separator (this->path_[m - n - 1])); // prev char separator
}
template <typename C, typename K>
inline auto basic_path<C, K>::
begin () const -> iterator
{
size_type b, e;
if (this->path_.empty ())
b = e = string_type::npos;
#ifndef _WIN32
else if (root ())
{
// We want to return a single empty component. Here we return
// the begin position one past the end. Not sure if this legal.
//
b = 1;
e = string_type::npos;
}
#endif
else
{
b = 0;
e = traits::find_separator (this->path_);
}
return iterator (this->path_, b, e);
}
template <typename C, typename K>
inline auto basic_path<C, K>::
end () const -> iterator
{
return iterator (this->path_, string_type::npos, string_type::npos);
}
template <typename C, typename K>
inline basic_path<C, K>::
basic_path (const iterator& b, const iterator& e)
{
//assert (b.p_ == e.p_);
if (b != e)
{
this->path_.assign (
*b.p_, b.b_, (e.b_ != string_type::npos ? e.b_ - b.b_ - 1 : e.b_));
#ifndef _WIN32
if (this->path_.empty ())
this->path_ = '/';
#endif
// No init() should be necessary.
}
}
template <typename C, typename K>
inline basic_path<C, K>& basic_path<C, K>::
complete ()
{
if (relative ())
*this = current () / *this;
return *this;
}
template <typename C, typename K>
inline basic_path<C, K>& basic_path<C, K>::
realize ()
{
#ifdef _WIN32
complete ();
normalize ();
#else
traits::realize (this->path_);
#endif
return *this;
}
template <typename C, typename K>
inline typename basic_path<C, K>::dir_type basic_path<C, K>::
root_directory () const
{
return absolute ()
#ifdef _WIN32
// Disambiguate with dir_type(string_type, bool).
//
? dir_type (this->path_, static_cast<size_type> (2))
#else
? dir_type ("/")
#endif
: dir_type ();
}
template <typename C, typename K>
inline basic_path<C, K> basic_path<C, K>::
base () const
{
size_type p (traits::find_extension (this->path_));
return p != string_type::npos
? basic_path (this->path_.c_str (), p)
: *this;
}
template <typename C, typename K>
inline const C* basic_path<C, K>::
extension () const
{
size_type p (traits::find_extension (this->path_));
return p != string_type::npos ? this->path_.c_str () + p + 1 : nullptr;
}
#ifndef _WIN32
template <typename C, typename K>
inline typename basic_path<C, K>::string_type basic_path<C, K>::
posix_string () const
{
return string ();
}
#endif
}
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