117 lines
3.0 KiB
C++
117 lines
3.0 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2011-2016 Danny Robson <danny@nerdcruft.net>
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*/
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#include "./string.hpp"
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#include <cstring>
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using util::tokeniser;
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///////////////////////////////////////////////////////////////////////////////
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// TODO: Horribly inefficient, but God help you if you're relying on this
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// being efficient in the first place.
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bool
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strbegins (const char *restrict str,
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const char *restrict prefix) {
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return 0 == strncmp (prefix, str, strlen (prefix));
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}
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///////////////////////////////////////////////////////////////////////////////
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tokeniser::tokeniser (const string_type &_value,
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value_type _separator):
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m_value (_value),
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m_separator (_separator)
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{ }
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//-----------------------------------------------------------------------------
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tokeniser::iterator
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tokeniser::cbegin (void) const
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{
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return iterator (
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{m_value.cbegin (), m_value.cend ()},
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m_separator
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);
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}
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//-----------------------------------------------------------------------------
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tokeniser::iterator
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tokeniser::cend (void) const
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{
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return iterator (
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{m_value.cend (), m_value.cend ()},
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m_separator
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);
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}
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///////////////////////////////////////////////////////////////////////////////
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tokeniser::iterator::iterator (range_type _range, value_type _separator):
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m_separator (_separator),
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m_range (_range.cbegin (),
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std::find (_range.cbegin (),
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_range.cend (),
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_separator)),
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m_end (_range.cend ())
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{ }
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//-----------------------------------------------------------------------------
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tokeniser::iterator
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tokeniser::iterator::operator++ (int)
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{
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iterator res(*this);
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++*this;
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return res;
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}
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//-----------------------------------------------------------------------------
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tokeniser::iterator&
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tokeniser::iterator::operator++ (void)
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{
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auto newend = m_range.cend ();
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if (newend != m_end) {
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CHECK_EQ (*m_range.cend (), m_separator);
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newend++;
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}
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m_range = {
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newend,
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std::find (newend, m_end, m_separator)
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};
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return *this;
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}
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//-----------------------------------------------------------------------------
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tokeniser::iterator::range_type
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tokeniser::iterator::operator* (void) const
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{
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return m_range;
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}
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//-----------------------------------------------------------------------------
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bool
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tokeniser::iterator::operator== (const iterator &rhs) const
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{
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return m_range == rhs.m_range && m_separator == rhs.m_separator;
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}
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