115 lines
3.8 KiB
C++
115 lines
3.8 KiB
C++
// cs_string.hh
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// This file is part of libpbe; see http://anyterm.org/
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// (C) 2007-2008 Philip Endecott
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// Distributed under the Boost Software License, Version 1.0:
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#ifndef libpbe_charset_cs_string_hh
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#define libpbe_charset_cs_string_hh
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#include "charset/charset_t.hh"
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#include "charset/string_adaptor.hh"
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#include <string>
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#include <memory>
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namespace pbe {
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// String tagged with character set
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// --------------------------------
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//
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// This class provides a string tagged with its character set. It is
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// implemented using a std::basic_string of the character set's unit_t
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// and a string_adaptor.
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// This base class is used so that ustr is constructed before it is
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// passed by reference to string_adaptor.
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template <typename unit_string_t>
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struct cs_string_base {
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unit_string_t ustr_;
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cs_string_base() {}
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cs_string_base(unit_string_t u): ustr_(u) {}
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cs_string_base(const typename unit_string_t::pointer u): ustr_(u) {}
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};
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template< charset_t cset,
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typename Alloc = std::allocator< typename charset_traits<cset>::unit_t >
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>
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class cs_string:
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private cs_string_base< typename string_adaptor<cset,Alloc>::unit_string_t >,
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public string_adaptor<cset,Alloc>
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{
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typedef string_adaptor<cset,Alloc> adaptor;
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typedef cs_string_base< typename adaptor::unit_string_t > base;
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typedef typename charset_traits<cset>::unit_t unit_t;
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public:
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cs_string(): adaptor(base::ustr_) {}
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cs_string(const unit_t* s): base(s), adaptor(base::ustr_) {} // ???
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cs_string(const cs_string& other): base(other.unit_str()), adaptor(base::ustr_) {}
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cs_string(typename adaptor::size_type n, typename adaptor::value_type c):
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adaptor(base::ustr_) {
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append(n,c);
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}
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template <class InputIterator>
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cs_string(InputIterator first, InputIterator last):
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adaptor(base::ustr_) {
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append(first,last);
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}
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};
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template <charset_t cset, typename Alloc>
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cs_string<cset, Alloc> operator+(const cs_string<cset, Alloc>& s1,
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const cs_string<cset, Alloc>& s2) {
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cs_string<cset,Alloc> s = s1;
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s.append(s2);
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return s;
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}
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template <charset_t cset, typename Alloc>
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cs_string<cset, Alloc> operator+(typename charset_traits<cset>::char_t c,
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const cs_string<cset, Alloc>& s2) {
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cs_string<cset,Alloc> s = c;
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s.append(s2);
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return s;
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}
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template <charset_t cset, typename Alloc>
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cs_string<cset, Alloc> operator+(const cs_string<cset, Alloc>& s1,
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typename charset_traits<cset>::char_t c) {
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cs_string<cset,Alloc> s = s1;
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s.append(c);
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return s;
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}
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};
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#endif
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