// Copyright (c) 2006-2008 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 "config.h"
#include <string>

#include "webkit/glue/glue_util.h"
#include "base/string_util.h"

#pragma warning(push, 0)
#include "CString.h"
#include "DeprecatedString.h"
#include "PlatformString.h"
#pragma warning(pop)

#include "KURL.h"

namespace webkit_glue {

// String conversions ----------------------------------------------------------

std::string CStringToStdString(const WebCore::CString& str) {
  const char* chars = str.data();
  return std::string(chars ? chars : "", str.length());
}

WebCore::CString StdStringToCString(const std::string& str) {
  return WebCore::CString(str.data(), str.size());
}

std::wstring StringToStdWString(const WebCore::String& str) {
  const UChar* chars = str.characters();
#if defined(WCHAR_T_IS_UTF16)
  return std::wstring(chars ? chars : L"", str.length());
#elif defined(WCHAR_T_IS_UTF32)
  std::string16 str16(chars ? chars : reinterpret_cast<const char16 *>(L""),
                                      str.length());
  return UTF16ToWide(str16);
#endif
}

std::string16 StringToStdString16(const WebCore::String& str) {
  const UChar* chars = str.characters();
  return std::string16(chars ? chars : (UChar *)L"", str.length());
}

std::string StringToStdString(const WebCore::String& str) {
  if (str.length() == 0)
    return std::string();
  std::string ret;
  UTF16ToUTF8(str.characters(), str.length(), &ret);
  return ret;
}

WebCore::String StdWStringToString(const std::wstring& str) {
#if defined(WCHAR_T_IS_UTF16)
  return WebCore::String(str.data(), static_cast<unsigned>(str.length()));
#elif defined(WCHAR_T_IS_UTF32)
  std::string16 str16 = WideToUTF16(str);
  return WebCore::String(str16.data(), static_cast<unsigned>(str16.length()));
#endif
}

WebCore::String StdStringToString(const std::string& str) {
  return WebCore::String(str.data(), static_cast<unsigned>(str.length()));
}

WebCore::DeprecatedString StdWStringToDeprecatedString(
    const std::wstring& str) {
#if defined(WCHAR_T_IS_UTF16)
  return WebCore::DeprecatedString(
      reinterpret_cast<const WebCore::DeprecatedChar*>(str.c_str()),
      static_cast<int>(str.size()));
#elif defined(WCHAR_T_IS_UTF32)
  std::string16 str16 = WideToUTF16(str);
  return WebCore::DeprecatedString(
      reinterpret_cast<const WebCore::DeprecatedChar*>(str16.c_str()),
      static_cast<int>(str16.size()));
#endif
}

std::wstring DeprecatedStringToStdWString(
    const WebCore::DeprecatedString& dep) {
#if defined(WCHAR_T_IS_UTF16)
  return std::wstring(reinterpret_cast<const wchar_t*>(dep.unicode()),
                                                       dep.length());
#elif defined(WCHAR_T_IS_UTF32)
  std::string16 str16(reinterpret_cast<const char16*>(dep.unicode()),
                                                      dep.length());
  return UTF16ToWide(str16);
#endif
}

// URL conversions -------------------------------------------------------------

GURL KURLToGURL(const WebCore::KURL& url) {
#ifdef USE_GOOGLE_URL_LIBRARY
  const WebCore::CString& spec = url.utf8String();
  if (spec.isNull())
    return GURL();
  return GURL(spec.data(), spec.length(), url.parsed(), url.isValid());
#else
  const WebCore::DeprecatedString& spec = url.deprecatedString();
  return GURL(WideToUTF8(DeprecatedStringToStdWString(spec))); 
#endif
}

WebCore::KURL GURLToKURL(const GURL& url) {
  const std::string& spec = url.possibly_invalid_spec();
#ifdef USE_GOOGLE_URL_LIBRARY
  // Convert using the internal structures to avoid re-parsing.
  return WebCore::KURL(spec.c_str(), static_cast<int>(spec.length()),
                       url.parsed_for_possibly_invalid_spec(), url.is_valid());
#else
  return WebCore::KURL(StdWStringToDeprecatedString(UTF8ToWide(spec)));
#endif
}

}  // namespace webkit_glue