chromium/extensions/browser/api/file_handlers/mime_util.h

// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// This file provides MIME related utilities.

#ifndef EXTENSIONS_BROWSER_API_FILE_HANDLERS_MIME_UTIL_H_
#define EXTENSIONS_BROWSER_API_FILE_HANDLERS_MIME_UTIL_H_

#include <stddef.h>

#include <memory>
#include <string>
#include <vector>

#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"

namespace content {
class BrowserContext;
}

namespace base {
class FilePath;
}  // namespace base

namespace storage {
class FileSystemURL;
}  // namespace storage

namespace extensions {
namespace app_file_handler_util {

extern const char kMimeTypeApplicationOctetStream[];
extern const char kMimeTypeInodeDirectory[];

// Gets a MIME type for a local path and returns it with |callback|. If not
// found, then the MIME type is an empty string.
void GetMimeTypeForLocalPath(
    content::BrowserContext* context,
    const base::FilePath& local_path,
    base::OnceCallback<void(const std::string&)> callback);

// Collects MIME types for files passed in the input vector. For non-native
// file systems tries to fetch the MIME type from metadata. For native ones,
// tries to sniff or guess by looking at the extension. If MIME type is not
// available, then an empty string is returned in the result vector.
class MimeTypeCollector { … };

}  // namespace app_file_handler_util
}  // namespace extensions

#endif  // EXTENSIONS_BROWSER_API_FILE_HANDLERS_MIME_UTIL_H_