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/*
* Copyright © 2015, 2019 Christian Persch
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <memory>
#include <optional>
#include <string>
#include <glib.h>
#include "vtepcre2.h"
#include "cxx-utils.hh"
namespace vte {
namespace base {
class Regex {
public:
enum class Purpose {
eMatch,
eSearch,
};
static bool check_pcre_config_unicode(GError** error);
static bool check_pcre_config_jit(void);
static Regex* compile(Purpose purpose,
std::string_view const& pattern,
uint32_t flags,
GError** error);
private:
mutable volatile int m_refcount{1};
using code_type = vte::FreeablePtr<pcre2_code_8, decltype(&pcre2_code_free_8), &pcre2_code_free_8>;
code_type m_code{};
Purpose m_purpose;
public:
Regex(pcre2_code_8* code,
Purpose purpose) noexcept :
m_code{code},
m_purpose{purpose}
{ }
Regex(Regex const&) = delete;
Regex(Regex&&) = delete;
Regex operator=(Regex const&) = delete;
Regex operator=(Regex&&) = delete;
Regex* ref() noexcept;
void unref() noexcept;
pcre2_code_8* code() const noexcept { return m_code.get(); }
constexpr inline bool has_purpose(Purpose purpose) const noexcept { return m_purpose == purpose; }
bool has_compile_flags(uint32_t flags ) const noexcept;
bool jit(uint32_t flags,
GError** error) noexcept;
bool jited() const noexcept;
std::optional<std::string> substitute(std::string_view const& subject,
std::string_view const& replacement,
uint32_t flags,
GError** error) const;
}; // class Regex
} // namespace base
} // namespace vte
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