tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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fpositer.cpp (2785B)

      1 // © 2016 and later: Unicode, Inc. and others.
      2 // License & terms of use: http://www.unicode.org/copyright.html
      3 /*
      4 ******************************************************************************
      5 * Copyright (C) 2009-2012, International Business Machines Corporation and
      6 * others. All Rights Reserved.
      7 ******************************************************************************
      8 *   Date        Name        Description
      9 *   12/14/09    doug        Creation.
     10 ******************************************************************************
     11 */
     12 
     13 #include "unicode/utypes.h"
     14 
     15 #if !UCONFIG_NO_FORMATTING
     16 
     17 #include "unicode/fpositer.h"
     18 #include "cmemory.h"
     19 #include "uvectr32.h"
     20 
     21 U_NAMESPACE_BEGIN
     22 
     23 FieldPositionIterator::~FieldPositionIterator() {
     24  delete data;
     25  data = nullptr;
     26  pos = -1;
     27 }
     28 
     29 FieldPositionIterator::FieldPositionIterator()
     30    : data(nullptr), pos(-1) {
     31 }
     32 
     33 FieldPositionIterator::FieldPositionIterator(const FieldPositionIterator &rhs)
     34  : UObject(rhs), data(nullptr), pos(rhs.pos) {
     35 
     36  if (rhs.data) {
     37    UErrorCode status = U_ZERO_ERROR;
     38    data = new UVector32(status);
     39    data->assign(*rhs.data, status);
     40    if (status != U_ZERO_ERROR) {
     41      delete data;
     42      data = nullptr;
     43      pos = -1;
     44    }
     45  }
     46 }
     47 
     48 bool FieldPositionIterator::operator==(const FieldPositionIterator &rhs) const {
     49  if (&rhs == this) {
     50    return true;
     51  }
     52  if (pos != rhs.pos) {
     53    return false;
     54  }
     55  if (!data) {
     56    return rhs.data == nullptr;
     57  }
     58  return rhs.data ? data->operator==(*rhs.data) : false;
     59 }
     60 
     61 void FieldPositionIterator::setData(UVector32 *adopt, UErrorCode& status) {
     62  // Verify that adopt has valid data, and update status if it doesn't.
     63  if (U_SUCCESS(status)) {
     64    if (adopt) {
     65      if (adopt->size() == 0) {
     66        delete adopt;
     67        adopt = nullptr;
     68      } else if ((adopt->size() % 4) != 0) {
     69        status = U_ILLEGAL_ARGUMENT_ERROR;
     70      } else {
     71        for (int i = 2; i < adopt->size(); i += 4) {
     72          if (adopt->elementAti(i) >= adopt->elementAti(i+1)) {
     73            status = U_ILLEGAL_ARGUMENT_ERROR;
     74            break;
     75          }
     76        }
     77      }
     78    }
     79  }
     80 
     81  // We own the data, even if status is in error, so we need to delete it now
     82  // if we're not keeping track of it.
     83  if (!U_SUCCESS(status)) {
     84    delete adopt;
     85    return;
     86  }
     87 
     88  delete data;
     89  data = adopt;
     90  pos = adopt == nullptr ? -1 : 0;
     91 }
     92 
     93 UBool FieldPositionIterator::next(FieldPosition& fp) {
     94  if (pos == -1) {
     95    return false;
     96  }
     97 
     98  // Ignore the first element of the tetrad: used for field category
     99  pos++;
    100  fp.setField(data->elementAti(pos++));
    101  fp.setBeginIndex(data->elementAti(pos++));
    102  fp.setEndIndex(data->elementAti(pos++));
    103 
    104  if (pos == data->size()) {
    105    pos = -1;
    106  }
    107 
    108  return true;
    109 }
    110 
    111 U_NAMESPACE_END
    112 
    113 #endif /* #if !UCONFIG_NO_FORMATTING */