tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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unistr_props.cpp (1595B)

      1 // © 2016 and later: Unicode, Inc. and others.
      2 // License & terms of use: http://www.unicode.org/copyright.html
      3 /*
      4 *******************************************************************************
      5 *
      6 *   Copyright (C) 1999-2011, International Business Machines
      7 *   Corporation and others.  All Rights Reserved.
      8 *
      9 *******************************************************************************
     10 *   file name:  unistr_props.cpp
     11 *   encoding:   UTF-8
     12 *   tab size:   8 (not used)
     13 *   indentation:2
     14 *
     15 *   created on: 2004aug25
     16 *   created by: Markus W. Scherer
     17 *
     18 *   Character property dependent functions moved here from unistr.cpp
     19 */
     20 
     21 #include "unicode/utypes.h"
     22 #include "unicode/uchar.h"
     23 #include "unicode/unistr.h"
     24 #include "unicode/utf16.h"
     25 
     26 U_NAMESPACE_BEGIN
     27 
     28 UnicodeString& 
     29 UnicodeString::trim()
     30 {
     31  if(isBogus()) {
     32    return *this;
     33  }
     34 
     35  char16_t *array = getArrayStart();
     36  UChar32 c;
     37  int32_t oldLength = this->length();
     38  int32_t i = oldLength, length;
     39 
     40  // first cut off trailing white space
     41  for(;;) {
     42    length = i;
     43    if(i <= 0) {
     44      break;
     45    }
     46    U16_PREV(array, 0, i, c);
     47    if(!(c == 0x20 || u_isWhitespace(c))) {
     48      break;
     49    }
     50  }
     51  if(length < oldLength) {
     52    setLength(length);
     53  }
     54 
     55  // find leading white space
     56  int32_t start;
     57  i = 0;
     58  for(;;) {
     59    start = i;
     60    if(i >= length) {
     61      break;
     62    }
     63    U16_NEXT(array, i, length, c);
     64    if(!(c == 0x20 || u_isWhitespace(c))) {
     65      break;
     66    }
     67  }
     68 
     69  // move string forward over leading white space
     70  if(start > 0) {
     71    doReplace(0, start, nullptr, 0, 0);
     72  }
     73 
     74  return *this;
     75 }
     76 
     77 U_NAMESPACE_END