1 /* 2 ******************************************************************************* 3 * 4 * Copyright (C) 1999-2011, 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 #include "unicode/utf16.h" 23 24 U_NAMESPACE_BEGIN 25 26 UnicodeString& 27 UnicodeString::trim() 28 { 29 if(isBogus()) { 30 return *this; 31 } 32 33 UChar *array = getArrayStart(); 34 UChar32 c; 35 int32_t oldLength = this->length(); 36 int32_t i = oldLength, length; 37 38 // first cut off trailing white space 39 for(;;) { 40 length = i; 41 if(i <= 0) { 42 break; 43 } 44 U16_PREV(array, 0, i, c); 45 if(!(c == 0x20 || u_isWhitespace(c))) { 46 break; 47 } 48 } 49 if(length < oldLength) { 50 setLength(length); 51 } 52 53 // find leading white space 54 int32_t start; 55 i = 0; 56 for(;;) { 57 start = i; 58 if(i >= length) { 59 break; 60 } 61 U16_NEXT(array, i, length, c); 62 if(!(c == 0x20 || u_isWhitespace(c))) { 63 break; 64 } 65 } 66 67 // move string forward over leading white space 68 if(start > 0) { 69 doReplace(0, start, 0, 0, 0); 70 } 71 72 return *this; 73 } 74 75 U_NAMESPACE_END 76
