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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_NIX_MIME_UTIL_XDG_H_
#define BASE_NIX_MIME_UTIL_XDG_H_
#include <stdint.h>
#include <map>
#include <string>
#include "base/base_export.h"
#include "build/build_config.h"
namespace base {
class FilePath;
namespace nix {
// Mime type with weight.
struct WeightedMime {
std::string mime_type;
uint8_t weight;
};
// Map of file extension to weighted mime type.
using MimeTypeMap = std::map<std::string, WeightedMime, std::less<>>;
// Parses a file at `file_path` which should be in the same format as the
// /usr/share/mime/mime.cache file on Linux.
// https://specifications.freedesktop.org/shared-mime-info-spec/shared-mime-info-spec-0.21.html#idm46058238280640
// `out_mime_types` will be populated with keys that are a file extension and a
// value that is a MIME type if a higher weighted mime is found that currently
// exists. Returns true if there was a valid list parsed from the file and false
// otherwise.
BASE_EXPORT bool ParseMimeTypes(const FilePath& file_path,
MimeTypeMap& out_mime_types);
// Gets the mime type for a file at |filepath|.
//
// The mime type is calculated based only on the file name of |filepath|. In
// particular |filepath| will not be touched on disk and |filepath| doesn't even
// have to exist. This means that the function does not work for directories
// (i.e. |filepath| is assumed to be a path to a file).
//
// Note that this function might need to read from disk the mime-types data
// provided by the OS. Therefore this function should not be called from
// threads that disallow blocking.
//
// If the mime type is unknown, this will return application/octet-stream.
BASE_EXPORT std::string GetFileMimeType(const FilePath& filepath);
} // namespace nix
} // namespace base
#endif // BASE_NIX_MIME_UTIL_XDG_H_
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