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// Copyright 2018 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.
#ifndef COMPONENTS_FILENAME_GENERATION_FILENAME_GENERATION_H_
#define COMPONENTS_FILENAME_GENERATION_FILENAME_GENERATION_H_
#include <string>
#include "base/files/file_path.h"
#include "base/strings/string16.h"
class GURL;
namespace filename_generation {
// Returns extension for supported MIME types (for example, for "text/plain"
// it returns "txt").
const base::FilePath::CharType* ExtensionForMimeType(
const std::string& contents_mime_type);
// Ensures that the file name has a proper extension for HTML by adding ".htm"
// if necessary.
base::FilePath EnsureHtmlExtension(const base::FilePath& name);
// Ensures that the file name has a proper extension for supported formats
// if necessary.
base::FilePath EnsureMimeExtension(const base::FilePath& name,
const std::string& contents_mime_type);
// Function for generating a filename based on |title|, if it is empty, |url|
// will be used as a fallback.
base::FilePath GenerateFilename(const base::string16& title,
const GURL& url,
bool can_save_as_complete,
std::string contents_mime_type);
// Truncates path->BaseName() to make path->BaseName().value().size() <= limit.
// - It keeps the extension as is. Only truncates the body part.
// - Only truncates if the base filename can maintain a minimum length
// (currently a hardcoded internval constant kTruncatedNameLengthLowerbound,
// but could be parameterized if ever required).
// If it was unable to shorten the name, returns false.
bool TruncateFilename(base::FilePath* path, size_t limit);
} // namespace filename_generation
#endif // COMPONENTS_FILENAME_GENERATION_FILENAME_GENERATION_H_
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