C++ nsACString::CharAt方法代码示例

NS_IMETHODIMP
nsNNTPNewsgroupList::ProcessHEADLine(const nsACString &line)
{
  int32_t colon = line.FindChar(':');
  nsCString header = PromiseFlatCString(line), value;
  if (colon != -1)
  {
    value = Substring(line, colon+1);
    header.SetLength((uint32_t)colon);
  }
  else if (line.CharAt(0) == ' ' || line.CharAt(0) == '\t') // We are continuing the header
  {
    m_thisLine += header; // Preserve whitespace (should we?)
    return NS_OK;
  }
  else
  {
    return NS_OK; // We are malformed. Just ignore and hope for the best...
  }
  
  nsresult rv;
  if (!m_lastHeader.IsEmpty())
  {
    rv = AddHeader(m_lastHeader.get(), m_thisLine.get());
    NS_ENSURE_SUCCESS(rv,rv);
  }
  
  value.Trim(" ");

  ToLowerCase(header, m_lastHeader);
  m_thisLine.Assign(value);
  return NS_OK;
}

void
nsCertOverride::convertStringToBits(const nsACString& str,
                            /*out*/ OverrideBits& ob)
{
  ob = OverrideBits::None;

  for (uint32_t i = 0; i < str.Length(); i++) {
    switch (str.CharAt(i)) {
      case 'm':
      case 'M':
        ob |= OverrideBits::Mismatch;
        break;

      case 'u':
      case 'U':
        ob |= OverrideBits::Untrusted;
        break;

      case 't':
      case 'T':
        ob |= OverrideBits::Time;
        break;

      default:
        break;
    }
  }
}

NS_IMETHODIMP
FontTableURIProtocolHandler::NewURI(const nsACString& aSpec,
                                    const char* aCharset, nsIURI* aBaseURI,
                                    nsIURI** aResult) {
  nsresult rv;
  nsCOMPtr<nsIURI> uri;

  // Either you got here via a ref or a fonttable: uri
  if (aSpec.Length() && aSpec.CharAt(0) == '#') {
    rv = NS_MutateURI(aBaseURI).SetRef(aSpec).Finalize(uri);
    NS_ENSURE_SUCCESS(rv, rv);
  } else {
    // Relative URIs (other than #ref) are not meaningful within the
    // fonttable: scheme.
    // If aSpec is a relative URI -other- than a bare #ref,
    // this will leave uri empty, and we'll return a failure code below.
    rv = NS_MutateURI(new mozilla::net::nsSimpleURI::Mutator())
             .SetSpec(aSpec)
             .Finalize(uri);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  bool schemeIs;
  if (NS_FAILED(uri->SchemeIs(FONTTABLEURI_SCHEME, &schemeIs)) || !schemeIs) {
    NS_WARNING("Non-fonttable spec in FontTableURIProtocolHandler");
    return NS_ERROR_NOT_AVAILABLE;
  }

  uri.forget(aResult);
  return NS_OK;
}

NS_IMETHODIMP
nsFontTableProtocolHandler::NewURI(const nsACString& aSpec,
                                   const char *aCharset,
                                   nsIURI *aBaseURI,
                                   nsIURI **aResult)
{
  nsRefPtr<nsIURI> uri;

  // Either you got here via a ref or a fonttable: uri
  if (aSpec.Length() && aSpec.CharAt(0) == '#') {
    nsresult rv = aBaseURI->CloneIgnoringRef(getter_AddRefs(uri));
    NS_ENSURE_SUCCESS(rv, rv);

    uri->SetRef(aSpec);
  } else {
    // Relative URIs (other than #ref) are not meaningful within the
    // fonttable: scheme.
    // If aSpec is a relative URI -other- than a bare #ref,
    // this will leave uri empty, and we'll return a failure code below.
    uri = new nsSimpleURI();
    uri->SetSpec(aSpec);
  }

  bool schemeIs;
  if (NS_FAILED(uri->SchemeIs(FONTTABLEURI_SCHEME, &schemeIs)) || !schemeIs) {
    NS_WARNING("Non-fonttable spec in nsFontTableProtocolHander");
    return NS_ERROR_NOT_AVAILABLE;
  }

  uri.forget(aResult);
  return NS_OK;
}

static nsMsgSearchOpValue
ConvertSearchFlagsToOperator(const nsACString &aFlags)
{
  nsCString flags(aFlags);
  int32_t lastTabPosition = flags.RFindChar('\t');
  if ((lastTabPosition == -1) ||
      ((int32_t)aFlags.Length() == lastTabPosition - 1)) {
    return -1;
  }

  switch (aFlags.CharAt(0)) {
    case 'X':
      return nsMsgSearchOp::DoesntContain;
    case 'O':
      if (aFlags.FindChar('T', lastTabPosition + 1) >= 0)
        return nsMsgSearchOp::BeginsWith;
      return nsMsgSearchOp::Contains;
    default:
      return -1;
  }
}