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/*
* Copyright 2009-2020 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef STRING_STRIP_HXX
#define STRING_STRIP_HXX
#include "Compiler.h"
#include <cstddef>
/**
* Skips whitespace at the beginning of the string, and returns the
* first non-whitespace character. If the string has no
* non-whitespace characters, then a pointer to the NULL terminator is
* returned.
*/
gcc_pure gcc_returns_nonnull gcc_nonnull_all
const char *
StripLeft(const char *p) noexcept;
gcc_pure gcc_returns_nonnull gcc_nonnull_all
static inline char *
StripLeft(char *p) noexcept
{
return const_cast<char *>(StripLeft((const char *)p));
}
/**
* Skips whitespace at the beginning of the string, and returns the
* first non-whitespace character or the end pointer.
*/
gcc_pure gcc_returns_nonnull gcc_nonnull_all
const char *
StripLeft(const char *p, const char *end) noexcept;
/**
* Determine the string's end as if it was stripped on the right side.
*/
gcc_pure gcc_returns_nonnull gcc_nonnull_all
const char *
StripRight(const char *p, const char *end) noexcept;
/**
* Determine the string's end as if it was stripped on the right side.
*/
gcc_pure gcc_returns_nonnull gcc_nonnull_all
static inline char *
StripRight(char *p, char *end) noexcept
{
return const_cast<char *>(StripRight((const char *)p,
(const char *)end));
}
/**
* Determine the string's length as if it was stripped on the right
* side.
*/
gcc_pure gcc_nonnull_all
std::size_t
StripRight(const char *p, std::size_t length) noexcept;
/**
* Strip trailing whitespace by null-terminating the string.
*/
gcc_nonnull_all
void
StripRight(char *p) noexcept;
/**
* Skip whitespace at the beginning and terminate the string after the
* last non-whitespace character.
*/
gcc_returns_nonnull gcc_nonnull_all
char *
Strip(char *p) noexcept;
#endif
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