mirror of
https://github.com/matrix-construct/construct
synced 2024-12-26 07:23:53 +01:00
234 lines
7.1 KiB
C++
234 lines
7.1 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_RFC1459_H
|
|
|
|
/// Legacy IRC grammars & tools
|
|
namespace ircd::rfc1459
|
|
{
|
|
struct nick;
|
|
struct user;
|
|
struct host;
|
|
struct cmd;
|
|
struct parv;
|
|
struct pfx;
|
|
struct line;
|
|
|
|
IRCD_EXCEPTION(ircd::error, error)
|
|
IRCD_EXCEPTION(error, syntax_error)
|
|
|
|
std::ostream &operator<<(std::ostream &, const pfx &);
|
|
std::ostream &operator<<(std::ostream &, const cmd &);
|
|
std::ostream &operator<<(std::ostream &, const parv &);
|
|
std::ostream &operator<<(std::ostream &, const line &); // unterminated
|
|
}
|
|
|
|
namespace ircd::rfc1459::character
|
|
{
|
|
enum attr :uint;
|
|
using attr_t = std::underlying_type<attr>::type;
|
|
|
|
extern const std::array<attr_t, 256> attrs;
|
|
extern const std::array<unsigned char, 256> tolower_tab;
|
|
extern const std::array<unsigned char, 256> toupper_tab;
|
|
|
|
// Tests
|
|
bool is(const uint8_t &c, const attr &attr);
|
|
|
|
// Transforms
|
|
const uint8_t &tolower(const uint8_t &c);
|
|
const uint8_t &toupper(const uint8_t &c);
|
|
|
|
// Get all characters for an attribute mask
|
|
size_t gather(const attr &attr, uint8_t *const &buf, const size_t &max);
|
|
std::string gather(const attr &attr);
|
|
|
|
// Like gather() but with special considerations for boost::spirit's char_()
|
|
size_t charset(const attr &attr, uint8_t *const &buf, const size_t &max);
|
|
std::string charset(const attr &attr);
|
|
}
|
|
|
|
enum ircd::rfc1459::character::attr
|
|
:uint
|
|
{
|
|
PRINT = 0x00000001,
|
|
CNTRL = 0x00000002,
|
|
ALPHA = 0x00000004,
|
|
PUNCT = 0x00000008,
|
|
DIGIT = 0x00000010,
|
|
SPACE = 0x00000020,
|
|
NICK = 0x00000040,
|
|
CHAN = 0x00000080,
|
|
KWILD = 0x00000100,
|
|
CHANPFX = 0x00000200,
|
|
USER = 0x00000400,
|
|
HOST = 0x00000800,
|
|
NONEOS = 0x00001000,
|
|
SERV = 0x00002000,
|
|
EOL = 0x00004000,
|
|
MWILD = 0x00008000,
|
|
LET = 0x00010000, // an actual letter
|
|
FCHAN = 0x00020000, // a 'fake' channel char
|
|
};
|
|
|
|
namespace ircd::rfc1459
|
|
{
|
|
struct less;
|
|
|
|
using character::is;
|
|
using character::toupper;
|
|
using character::tolower;
|
|
using character::gather;
|
|
|
|
inline bool is_print(const char &c) { return is(c, character::PRINT); }
|
|
inline bool is_host(const char &c) { return is(c, character::HOST); }
|
|
inline bool is_user(const char &c) { return is(c, character::USER); }
|
|
inline bool is_chan(const char &c) { return is(c, character::CHAN); }
|
|
inline bool is_chan_prefix(const char &c) { return is(c, character::CHANPFX); }
|
|
inline bool is_fake_chan(const char &c) { return is(c, character::FCHAN); }
|
|
inline bool is_kwild(const char &c) { return is(c, character::KWILD); }
|
|
inline bool is_mwild(const char &c) { return is(c, character::MWILD); }
|
|
inline bool is_nick(const char &c) { return is(c, character::NICK); }
|
|
inline bool is_letter(const char &c) { return is(c, character::LET); }
|
|
inline bool is_digit(const char &c) { return is(c, character::DIGIT); }
|
|
inline bool is_cntrl(const char &c) { return is(c, character::CNTRL); }
|
|
inline bool is_alpha(const char &c) { return is(c, character::ALPHA); }
|
|
inline bool is_space(const char &c) { return is(c, character::SPACE); }
|
|
inline bool is_noneos(const char &c) { return is(c, character::NONEOS); }
|
|
inline bool is_eol(const char &c) { return is(c, character::EOL); }
|
|
inline bool is_serv(const char &c) { return is(c, character::SERV) || is_nick(c); }
|
|
inline bool is_id(const char &c) { return is_digit(c) || is_letter(c); }
|
|
inline bool is_alnum(const char &c) { return is_digit(c) || is_alpha(c); }
|
|
inline bool is_punct(const char &c) { return !is_cntrl(c) && !is_alnum(c); }
|
|
inline bool is_lower(const char &c) { return is_alpha(c) && uint8_t(c) > 0x5f; }
|
|
inline bool is_upper(const char &c) { return is_alpha(c) && uint8_t(c) < 0x60; }
|
|
inline bool is_graph(const char &c) { return is_print(c) && uint8_t(c) != 0x32; }
|
|
inline bool is_ascii(const char &c) { return uint8_t(c) < 0x80; }
|
|
inline bool is_xdigit(const char &c)
|
|
{
|
|
return is_digit(c) || ('a' <= c && c <= 'f') || ('A' <= c && c <= 'F');
|
|
}
|
|
}
|
|
|
|
struct ircd::rfc1459::nick
|
|
:string_view
|
|
{
|
|
using string_view::string_view;
|
|
};
|
|
|
|
struct ircd::rfc1459::user
|
|
:string_view
|
|
{
|
|
using string_view::string_view;
|
|
};
|
|
|
|
struct ircd::rfc1459::host
|
|
:string_view
|
|
{
|
|
using string_view::string_view;
|
|
};
|
|
|
|
struct ircd::rfc1459::cmd
|
|
:string_view
|
|
{
|
|
using string_view::string_view;
|
|
};
|
|
|
|
struct ircd::rfc1459::parv
|
|
:std::vector<string_view>
|
|
{
|
|
using std::vector<string_view>::vector;
|
|
};
|
|
|
|
struct ircd::rfc1459::pfx
|
|
{
|
|
struct nick nick;
|
|
struct user user;
|
|
struct host host;
|
|
|
|
bool empty() const;
|
|
};
|
|
|
|
struct ircd::rfc1459::line
|
|
{
|
|
struct pfx pfx;
|
|
struct cmd cmd;
|
|
struct parv parv;
|
|
|
|
bool empty() const;
|
|
auto operator[](const size_t &pos) const { return parv.at(pos); }
|
|
auto operator[](const size_t &pos) { return parv.at(pos); }
|
|
|
|
line(const char *&start, const char *const &stop);
|
|
line() = default;
|
|
};
|
|
|
|
struct ircd::rfc1459::less
|
|
{
|
|
bool operator()(const char *const &a, const char *const &b) const;
|
|
bool operator()(const std::string &a, const std::string &b) const;
|
|
bool operator()(const std::string_view &a, const std::string_view &b) const;
|
|
};
|
|
|
|
inline bool
|
|
ircd::rfc1459::less::operator()(const std::string_view &a,
|
|
const std::string_view &b)
|
|
const
|
|
{
|
|
return std::lexicographical_compare(begin(a), end(a), begin(b), end(b), []
|
|
(const char &a, const char &b)
|
|
{
|
|
return tolower(a) < tolower(b);
|
|
});
|
|
}
|
|
|
|
inline bool
|
|
ircd::rfc1459::less::operator()(const std::string &a,
|
|
const std::string &b)
|
|
const
|
|
{
|
|
return std::lexicographical_compare(begin(a), end(a), begin(b), end(b), []
|
|
(const char &a, const char &b)
|
|
{
|
|
return tolower(a) < tolower(b);
|
|
});
|
|
}
|
|
|
|
inline bool
|
|
ircd::rfc1459::less::operator()(const char *const &a,
|
|
const char *const &b)
|
|
const
|
|
{
|
|
return std::lexicographical_compare(a, a + strlen(a), b, b + strlen(b), []
|
|
(const char &a, const char &b)
|
|
{
|
|
return tolower(a) < tolower(b);
|
|
});
|
|
}
|
|
|
|
inline const uint8_t &
|
|
ircd::rfc1459::character::tolower(const uint8_t &c)
|
|
{
|
|
return tolower_tab[c];
|
|
}
|
|
|
|
inline const uint8_t &
|
|
ircd::rfc1459::character::toupper(const uint8_t &c)
|
|
{
|
|
return toupper_tab[c];
|
|
}
|
|
|
|
inline bool
|
|
ircd::rfc1459::character::is(const uint8_t &c,
|
|
const attr &attr)
|
|
{
|
|
return (attrs[c] & attr) == attr;
|
|
}
|