1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include <string> 6 7 #include "net/base/platform_mime_util.h" 8 9 #include "base/registry.h" 10 #include "base/string_util.h" 11 12 namespace net { 13 14 bool PlatformMimeUtil::GetPlatformMimeTypeFromExtension( 15 const FilePath::StringType& ext, std::string* result) const { 16 // check windows registry for file extension's mime type (registry key 17 // names are not case-sensitive). 18 std::wstring value, key = L"." + ext; 19 RegKey(HKEY_CLASSES_ROOT, key.c_str()).ReadValue(L"Content Type", &value); 20 if (!value.empty()) { 21 *result = WideToUTF8(value); 22 return true; 23 } 24 return false; 25 } 26 27 bool PlatformMimeUtil::GetPreferredExtensionForMimeType( 28 const std::string& mime_type, FilePath::StringType* ext) const { 29 std::wstring key(L"MIME\\Database\\Content Type\\" + UTF8ToWide(mime_type)); 30 if (!RegKey(HKEY_CLASSES_ROOT, key.c_str()).ReadValue(L"Extension", ext)) 31 return false; 32 33 // Strip off the leading dot, this should always be the case. 34 if (!ext->empty() && ext->at(0) == L'.') 35 ext->erase(ext->begin()); 36 37 return true; 38 } 39 40 } // namespace net 41
