int32_t
nsACString::Find(const self_type& aStr, uint32_t aOffset,
                 ComparatorFunc c) const
{
  const char_type *begin, *end;
  uint32_t selflen = BeginReading(&begin, &end);

  if (aOffset > selflen)
    return -1;

  const char_type *other;
  uint32_t otherlen = aStr.BeginReading(&other);

  if (otherlen > selflen - aOffset)
    return -1;

  // We want to stop searching otherlen characters before the end of the string
  end -= otherlen;

  for (const char_type *cur = begin + aOffset; cur <= end; ++cur) {
    if (!c(cur, other, otherlen))
      return cur - begin;
  }
  return -1;
}
Пример #2
0
int32_t
nsACString::RFind(const self_type& aStr, int32_t aOffset,
                  ComparatorFunc aComparator) const
{
  const char_type* begin;
  const char_type* end;
  uint32_t selflen = BeginReading(&begin, &end);

  const char_type* other;
  uint32_t otherlen = aStr.BeginReading(&other);

  if (selflen < otherlen) {
    return -1;
  }

  if (aOffset < 0 || uint32_t(aOffset) > (selflen - otherlen)) {
    end -= otherlen;
  } else {
    end = begin + aOffset;
  }

  for (const char_type* cur = end; cur >= begin; --cur) {
    if (!aComparator(cur, other, otherlen)) {
      return cur - begin;
    }
  }
  return -1;
}
Пример #3
0
PRInt32 
nsACString::RFind(const self_type& aStr, PRInt32 aOffset, ComparatorFunc c) const
{
  const char_type *begin, *end;
  PRUint32 selflen = BeginReading(&begin, &end);

  const char_type *other;
  PRUint32 otherlen = aStr.BeginReading(&other);

  if (selflen < otherlen)
    return -1;

  if (aOffset < 0 || aOffset > (selflen - otherlen))
    end -= otherlen;
  else
    end = begin + aOffset;

  for (const char_type *cur = end; cur >= begin; --cur) {
    if (!c(cur, other, otherlen))
      return cur - begin;
  }
  return -1;
}