// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "net/base/url_util.h"

#include "build/build_config.h"

#if defined(OS_POSIX)
#include <netinet/in.h>
#elif defined(OS_WIN)
#include <ws2tcpip.h>
#endif

#include "url/gurl.h"
#include "url/url_canon.h"

namespace url {
namespace net {

std::string CanonicalizeHost(base::StringPiece host,
                             url::CanonHostInfo* host_info) {
  // Try to canonicalize the host.
  const url::Component raw_host_component(0, static_cast<int>(host.length()));
  std::string canon_host;
  url::StdStringCanonOutput canon_host_output(&canon_host);
  url::CanonicalizeHostVerbose(host.data(), raw_host_component,
                               &canon_host_output, host_info);

  if (host_info->out_host.is_nonempty() &&
      host_info->family != url::CanonHostInfo::BROKEN) {
    // Success!  Assert that there's no extra garbage.
    canon_host_output.Complete();
    DCHECK_EQ(host_info->out_host.len, static_cast<int>(canon_host.length()));
  } else {
    // Empty host, or canonicalization failed.  We'll return empty.
    canon_host.clear();
  }

  return canon_host;
}

}  // namespace net
}  // namespace url