ladybird/AK/LexicalPath.h
Max Wipfli fc6d051dfd AK+Everywhere: Add and use static APIs for LexicalPath
The LexicalPath instance methods dirname(), basename(), title() and
extension() will be changed to return StringView const& in a further
commit. Due to this, users creating temporary LexicalPath objects just
to call one of those getters will recieve a StringView const& pointing
to a possible freed buffer.

To avoid this, static methods for those APIs have been added, which will
return a String by value to avoid those problems. All cases where
temporary LexicalPath objects have been used as described above haven
been changed to use the static APIs.
2021-06-30 11:13:54 +02:00

93 lines
2.2 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Max Wipfli <max.wipfli@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/String.h>
#include <AK/Vector.h>
namespace AK {
class LexicalPath {
public:
LexicalPath() = default;
explicit LexicalPath(String);
bool is_absolute() const { return m_is_absolute; }
String const& string() const { return m_string; }
String const& dirname() const { return m_dirname; }
String const& basename() const { return m_basename; }
String const& title() const { return m_title; }
String const& extension() const { return m_extension; }
Vector<String> const& parts() const { return m_parts; }
bool has_extension(StringView const&) const;
void append(String const& component);
static String canonicalized_path(String);
static String relative_path(String absolute_path, String const& prefix);
template<typename... S>
static LexicalPath join(String const& first, S&&... rest)
{
StringBuilder builder;
builder.append(first);
((builder.append('/'), builder.append(forward<S>(rest))), ...);
return LexicalPath { builder.to_string() };
}
static String dirname(String path)
{
auto lexical_path = LexicalPath(move(path));
return lexical_path.dirname();
}
static String basename(String path)
{
auto lexical_path = LexicalPath(move(path));
return lexical_path.basename();
}
static String title(String path)
{
auto lexical_path = LexicalPath(move(path));
return lexical_path.title();
}
static String extension(String path)
{
auto lexical_path = LexicalPath(move(path));
return lexical_path.extension();
}
private:
void canonicalize();
Vector<String> m_parts;
String m_string;
String m_dirname;
String m_basename;
String m_title;
String m_extension;
bool m_is_absolute { false };
};
template<>
struct Formatter<LexicalPath> : Formatter<StringView> {
void format(FormatBuilder& builder, LexicalPath const& value)
{
Formatter<StringView>::format(builder, value.string());
}
};
};
using AK::LexicalPath;