86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
/*
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* Copyright 2009-2020 Max Kellermann <max.kellermann@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "StringStrip.hxx"
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#include "CharUtil.hxx"
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#include <cstring>
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const char *
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StripLeft(const char *p) noexcept
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{
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while (IsWhitespaceNotNull(*p))
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++p;
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return p;
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}
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const char *
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StripLeft(const char *p, const char *end) noexcept
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{
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while (p < end && IsWhitespaceOrNull(*p))
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++p;
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return p;
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}
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const char *
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StripRight(const char *p, const char *end) noexcept
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{
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while (end > p && IsWhitespaceOrNull(end[-1]))
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--end;
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return end;
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}
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std::size_t
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StripRight(const char *p, std::size_t length) noexcept
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{
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while (length > 0 && IsWhitespaceOrNull(p[length - 1]))
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--length;
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return length;
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}
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void
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StripRight(char *p) noexcept
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{
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std::size_t old_length = std::strlen(p);
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std::size_t new_length = StripRight(p, old_length);
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p[new_length] = 0;
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}
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char *
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Strip(char *p) noexcept
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{
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p = StripLeft(p);
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StripRight(p);
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return p;
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}
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