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util/StringView: add methods StripLeft(), StripRight()

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This commit is contained in:
Max Kellermann 2015-10-16 08:59:47 +02:00
parent c7b0e9b05b
commit 27a40a9843
3 changed files with 56 additions and 1 deletions
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2
Makefile.am
View File

@ -401,7 +401,7 @@ libutil_a_SOURCES = \
src/util/CharUtil.hxx \
src/util/NumberParser.hxx \
src/util/StringPointer.hxx \
src/util/StringView.hxx \
src/util/StringView.cxx src/util/StringView.hxx \
src/util/AllocatedString.cxx src/util/AllocatedString.hxx \
src/util/StringUtil.cxx src/util/StringUtil.hxx \
src/util/WStringUtil.cxx src/util/WStringUtil.hxx \

45
src/util/StringView.cxx Normal file
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@ -0,0 +1,45 @@
/*
* Copyright (C) 2013-2015 Max Kellermann <max@duempel.org>
*
* 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.
*/
#include "StringView.hxx"
#include "CharUtil.hxx"
void
StringView::StripLeft()
{
while (!IsEmpty() && IsWhitespaceOrNull(front()))
pop_front();
}
void
StringView::StripRight()
{
while (!IsEmpty() && IsWhitespaceOrNull(back()))
pop_back();
}

10
src/util/StringView.hxx
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@ -103,6 +103,16 @@ struct StringView : ConstBuffer<char> {
bool EqualsLiteralIgnoreCase(const char (&other)[n]) const {
return EqualsIgnoreCase({other, n - 1});
}
/**
* Skip all whitespace at the beginning.
*/
void StripLeft();
/**
* Skip all whitespace at the end.
*/
void StripRight();
};
#endif