109 lines
3 KiB
C++
109 lines
3 KiB
C++
// Copyright (c) 2015, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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#include <boost/range/iterator_range.hpp>
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namespace agi {
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typedef boost::iterator_range<std::string::const_iterator> StringRange;
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template<typename Iterator>
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class split_iterator {
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bool is_end = false;
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Iterator b;
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Iterator cur;
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Iterator e;
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typename Iterator::value_type c;
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public:
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using iterator_category = std::forward_iterator_tag;
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using value_type = boost::iterator_range<Iterator>;
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using pointer = value_type*;
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using reference = value_type&;
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using difference_type = ptrdiff_t;
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split_iterator(Iterator begin, Iterator end, typename Iterator::value_type c)
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: b(begin), cur(begin), e(end), c(c)
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{
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if (b != e)
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cur = std::find(b, e, c);
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else
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is_end = true;
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}
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split_iterator() : is_end(true) { }
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bool eof() const { return is_end; }
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boost::iterator_range<Iterator> operator*() const {
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return boost::make_iterator_range(b, cur);
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}
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bool operator==(split_iterator const& it) const {
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if (is_end || it.is_end)
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return is_end && it.is_end;
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return b == it.b && cur == it.cur && e == it.e && c == it.c;
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}
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bool operator!=(split_iterator const& it) const {
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return !(*this == it);
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}
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split_iterator& operator++() {
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if (cur != e) {
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b = cur + 1;
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cur = std::find(b, e, c);
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}
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else {
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b = e;
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is_end = true;
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}
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return *this;
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}
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split_iterator operator++(int) {
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split_iterator tmp = *this;
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++*this;
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return tmp;
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}
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};
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template<typename Iterator>
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split_iterator<Iterator> begin(split_iterator<Iterator> const& it) {
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return it;
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}
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template<typename Iterator>
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split_iterator<Iterator> end(split_iterator<Iterator> const&) {
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return split_iterator<Iterator>();
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}
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static inline std::string str(StringRange const& r) {
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return std::string(r.begin(), r.end());
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}
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template<typename Str, typename Char>
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split_iterator<typename Str::const_iterator> Split(Str const& str, Char delim) {
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return split_iterator<typename Str::const_iterator>(begin(str), end(str), delim);
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}
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template<typename Cont, typename Str, typename Char>
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void Split(Cont& out, Str const& str, Char delim) {
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out.clear();
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for (auto const& tok : Split(str, delim))
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out.emplace_back(begin(tok), end(tok));
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}
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}
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