1 /* 2 ******************************************************************************* 3 * 4 * Copyright (C) 1999-2007, International Business Machines 5 * Corporation and others. All Rights Reserved. 6 * 7 ******************************************************************************* 8 * file name: unistr_props.cpp 9 * encoding: US-ASCII 10 * tab size: 8 (not used) 11 * indentation:2 12 * 13 * created on: 2004aug25 14 * created by: Markus W. Scherer 15 * 16 * Character property dependent functions moved here from unistr.cpp 17 */ 18 19 #include "unicode/utypes.h" 20 #include "unicode/uchar.h" 21 #include "unicode/unistr.h" 22 23 U_NAMESPACE_BEGIN 24 25 UnicodeString& 26 UnicodeString::trim() 27 { 28 if(isBogus()) { 29 return *this; 30 } 31 32 UChar *array = getArrayStart(); 33 UChar32 c; 34 int32_t oldLength = this->length(); 35 int32_t i = oldLength, length; 36 37 // first cut off trailing white space 38 for(;;) { 39 length = i; 40 if(i <= 0) { 41 break; 42 } 43 U16_PREV(array, 0, i, c); 44 if(!(c == 0x20 || u_isWhitespace(c))) { 45 break; 46 } 47 } 48 if(length < oldLength) { 49 setLength(length); 50 } 51 52 // find leading white space 53 int32_t start; 54 i = 0; 55 for(;;) { 56 start = i; 57 if(i >= length) { 58 break; 59 } 60 U16_NEXT(array, i, length, c); 61 if(!(c == 0x20 || u_isWhitespace(c))) { 62 break; 63 } 64 } 65 66 // move string forward over leading white space 67 if(start > 0) { 68 doReplace(0, start, 0, 0, 0); 69 } 70 71 return *this; 72 } 73 74 U_NAMESPACE_END 75
