103 lines
2.2 KiB
C++
103 lines
2.2 KiB
C++
/*
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* Copyright 2003-2021 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_FS_NARROW_PATH_HXX
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#define MPD_FS_NARROW_PATH_HXX
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#include "Path.hxx"
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#ifdef _UNICODE
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#include "AllocatedPath.hxx"
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#include "util/AllocatedString.hxx"
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#else
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#include "util/StringPointer.hxx"
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#endif
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/**
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* A path name that uses the regular (narrow) "char". This is used to
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* pass a #Path (which may be represented by wchar_t) to a library
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* that accepts only "const char *".
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*/
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class NarrowPath {
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#ifdef _UNICODE
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using Value = AllocatedString;
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#else
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using Value = StringPointer<>;
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#endif
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using const_pointer = typename Value::const_pointer;
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Value value;
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public:
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#ifdef _UNICODE
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explicit NarrowPath(Path _path) noexcept;
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#else
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explicit NarrowPath(Path _path):value(_path.c_str()) {}
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#endif
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operator const_pointer() const {
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return c_str();
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}
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const_pointer c_str() const {
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return value.c_str();
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}
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};
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/**
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* A path name converted from a "narrow" string. This is used to
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* import an existing narrow string to a #Path.
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*/
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class FromNarrowPath {
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#ifdef _UNICODE
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using Value = AllocatedPath;
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#else
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using Value = Path;
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#endif
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Value value{nullptr};
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public:
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FromNarrowPath() = default;
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#ifdef _UNICODE
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/**
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* Throws on error.
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*/
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FromNarrowPath(const char *s);
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#else
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constexpr FromNarrowPath(const char *s) noexcept
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:value(Value::FromFS(s)) {}
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#endif
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#ifndef _UNICODE
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constexpr
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#endif
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operator Path() const noexcept {
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#ifdef _UNICODE
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if (value.IsNull())
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return nullptr;
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#endif
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return value;
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}
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};
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#endif
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