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// Copyright (c) 2012 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/platform_mime_util.h"
#include <string>
#include "base/logging.h"
#include "build/build_config.h"
#if defined(OS_ANDROID)
#include "net/android/network_library.h"
#else
#include "base/nix/mime_util_xdg.h"
#endif
namespace net {
#if defined(OS_ANDROID)
bool PlatformMimeUtil::GetPlatformMimeTypeFromExtension(
const FilePath::StringType& ext, std::string* result) const {
// TODO(jingzhao): Recover the original implementation once we support JNI.
#if 0
return android::GetMimeTypeFromExtension(ext, result);
#else
NOTIMPLEMENTED();
return false;
#endif
}
#else
bool PlatformMimeUtil::GetPlatformMimeTypeFromExtension(
const FilePath::StringType& ext, std::string* result) const {
// TODO(thestig): This is a temporary hack until we can fix this
// properly in test shell / webkit.
// We have to play dumb and not return application/x-perl here
// to make the reload-subframe-object layout test happy.
if (ext == "pl")
return false;
FilePath dummy_path("foo." + ext);
std::string out = base::nix::GetFileMimeType(dummy_path);
// GetFileMimeType likes to return application/octet-stream
// for everything it doesn't know - ignore that.
if (out == "application/octet-stream" || out.empty())
return false;
// GetFileMimeType returns image/x-ico because that's what's in the XDG
// mime database. That database is the merger of the Gnome and KDE mime
// databases. Apparently someone working on KDE in 2001 decided .ico
// resolves to image/x-ico, whereas the rest of the world uses image/x-icon.
// FWIW, image/vnd.microsoft.icon is the official IANA assignment.
if (out == "image/x-ico")
out = "image/x-icon";
*result = out;
return true;
}
#endif // defined(OS_ANDROID)
struct MimeToExt {
const char* mime_type;
const char* ext;
};
const struct MimeToExt mime_type_ext_map[] = {
{"application/pdf", "pdf"},
{"application/x-tar", "tar"},
{"audio/mpeg", "mp3"},
{"image/gif", "gif"},
{"image/jpeg", "jpg"},
{"image/png", "png"},
{"text/html", "html"},
{"video/mp4", "mp4"},
{"video/mpeg", "mpg"},
{"text/plain", "txt"},
{"text/x-sh", "sh"},
};
bool PlatformMimeUtil::GetPreferredExtensionForMimeType(
const std::string& mime_type, FilePath::StringType* ext) const {
for (size_t x = 0;
x < (sizeof(mime_type_ext_map) / sizeof(MimeToExt));
x++) {
if (mime_type_ext_map[x].mime_type == mime_type) {
*ext = mime_type_ext_map[x].ext;
return true;
}
}
// TODO(dhg): Fix this the right way by implementing what's said below.
// Unlike GetPlatformMimeTypeFromExtension, this method doesn't have a
// default list that it uses, but for now we are also returning false since
// this doesn't really matter as much under Linux.
//
// If we wanted to do this properly, we would read the mime.cache file which
// has a section where they assign a glob (*.gif) to a mimetype
// (image/gif). We look up the "heaviest" glob for a certain mime type and
// then then try to chop off "*.".
return false;
}
void PlatformMimeUtil::GetPlatformExtensionsForMimeType(
const std::string& mime_type,
base::hash_set<FilePath::StringType>* extensions) const {
FilePath::StringType ext;
if (GetPreferredExtensionForMimeType(mime_type, &ext))
extensions->insert(ext);
}
} // namespace net
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