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78 lines
1.5 KiB
78 lines
1.5 KiB
4 months ago
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// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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*******************************************************************************
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*
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* Copyright (C) 1999-2011, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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* file name: unistr_props.cpp
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* encoding: UTF-8
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* tab size: 8 (not used)
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* indentation:2
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*
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* created on: 2004aug25
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* created by: Markus W. Scherer
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*
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* Character property dependent functions moved here from unistr.cpp
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*/
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#include "unicode/utypes.h"
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#include "unicode/uchar.h"
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#include "unicode/unistr.h"
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#include "unicode/utf16.h"
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U_NAMESPACE_BEGIN
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UnicodeString&
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UnicodeString::trim()
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{
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if(isBogus()) {
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return *this;
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}
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UChar *array = getArrayStart();
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UChar32 c;
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int32_t oldLength = this->length();
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int32_t i = oldLength, length;
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// first cut off trailing white space
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for(;;) {
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length = i;
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if(i <= 0) {
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break;
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}
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U16_PREV(array, 0, i, c);
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if(!(c == 0x20 || u_isWhitespace(c))) {
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break;
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}
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}
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if(length < oldLength) {
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setLength(length);
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}
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// find leading white space
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int32_t start;
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i = 0;
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for(;;) {
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start = i;
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if(i >= length) {
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break;
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}
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U16_NEXT(array, i, length, c);
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if(!(c == 0x20 || u_isWhitespace(c))) {
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break;
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}
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}
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// move string forward over leading white space
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if(start > 0) {
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doReplace(0, start, 0, 0, 0);
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}
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return *this;
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}
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U_NAMESPACE_END
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