mirror of
https://github.com/matrix-construct/construct
synced 2024-11-27 01:02:46 +01:00
567 lines
11 KiB
C++
567 lines
11 KiB
C++
/*
|
|
* charybdis: an advanced ircd.
|
|
* inline/stringops.h: inlined string operations used in a few places
|
|
*
|
|
* Copyright (C) 2005-2016 Charybdis Development Team
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
* USA
|
|
*/
|
|
|
|
#include <RB_INC_BOOST_TOKENIZER_HPP
|
|
#include <RB_INC_BOOST_LEXICAL_CAST_HPP
|
|
|
|
ircd::string_view
|
|
ircd::token_first(const string_view &str,
|
|
const char *const &sep)
|
|
{
|
|
return token(str, sep, 0);
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::tokens_after(const string_view &str,
|
|
const char *const &sep,
|
|
const size_t &i)
|
|
{
|
|
using type = string_view;
|
|
using iter = typename type::const_iterator;
|
|
using delim = boost::char_separator<char>;
|
|
|
|
const delim d(sep);
|
|
const boost::tokenizer<delim, iter, type> view(str, d);
|
|
|
|
auto it(begin(view));
|
|
for(size_t j(0); it != end(view); ++it, j++)
|
|
if(j > i)
|
|
return string_view{it->data(), str.data() + str.size()};
|
|
|
|
return {};
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::token_last(const string_view &str,
|
|
const char *const &sep)
|
|
{
|
|
using type = string_view;
|
|
using iter = typename type::const_iterator;
|
|
using delim = boost::char_separator<char>;
|
|
|
|
const delim d(sep);
|
|
const boost::tokenizer<delim, iter, type> view(str, d);
|
|
|
|
auto it(begin(view));
|
|
if(it == end(view))
|
|
return str.empty()? str : throw std::out_of_range("token out of range");
|
|
|
|
string_view ret(*it);
|
|
for(++it; it != end(view); ++it)
|
|
ret = *it;
|
|
|
|
return ret;
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::token(const string_view &str,
|
|
const char *const &sep,
|
|
const size_t &i)
|
|
{
|
|
using type = string_view;
|
|
using iter = typename type::const_iterator;
|
|
using delim = boost::char_separator<char>;
|
|
|
|
const delim d(sep);
|
|
const boost::tokenizer<delim, iter, type> view(str, d);
|
|
const auto it(at(begin(view), end(view), i));
|
|
return *it;
|
|
}
|
|
|
|
size_t
|
|
ircd::tokens_count(const string_view &str,
|
|
const char *const &sep)
|
|
{
|
|
using type = string_view;
|
|
using iter = typename type::const_iterator;
|
|
using delim = boost::char_separator<char>;
|
|
|
|
const delim d(sep);
|
|
const boost::tokenizer<delim, iter, type> view(str, d);
|
|
return std::distance(begin(view), end(view));
|
|
}
|
|
|
|
size_t
|
|
ircd::tokens(const string_view &str,
|
|
const char *const &sep,
|
|
char *const &buf,
|
|
const size_t &max,
|
|
const token_view &closure)
|
|
{
|
|
char *ptr(buf);
|
|
char *const stop(buf + max);
|
|
tokens(str, sep, [&closure, &ptr, &stop]
|
|
(const string_view &token)
|
|
{
|
|
const size_t terminated_size(token.size() + 1);
|
|
const size_t remaining(std::distance(ptr, stop));
|
|
if(remaining < terminated_size)
|
|
return;
|
|
|
|
char *const dest(ptr);
|
|
ptr += strlcpy(dest, token.data(), terminated_size);
|
|
closure(string_view(dest, token.size()));
|
|
});
|
|
|
|
return std::distance(buf, ptr);
|
|
}
|
|
|
|
size_t
|
|
ircd::tokens(const string_view &str,
|
|
const char *const &sep,
|
|
const size_t &limit,
|
|
const token_view &closure)
|
|
{
|
|
using type = string_view;
|
|
using iter = typename type::const_iterator;
|
|
using delim = boost::char_separator<char>;
|
|
|
|
const delim d(sep);
|
|
const boost::tokenizer<delim, iter, type> view(str, d);
|
|
|
|
size_t i(0);
|
|
for(auto it(begin(view)); i < limit && it != end(view); ++it, i++)
|
|
closure(*it);
|
|
|
|
return i;
|
|
}
|
|
|
|
void
|
|
ircd::tokens(const string_view &str,
|
|
const char *const &sep,
|
|
const token_view &closure)
|
|
{
|
|
using type = string_view;
|
|
using iter = typename type::const_iterator;
|
|
using delim = boost::char_separator<char>;
|
|
|
|
const delim d(sep);
|
|
const boost::tokenizer<delim, iter, type> view(str, d);
|
|
std::for_each(begin(view), end(view), closure);
|
|
}
|
|
|
|
namespace ircd {
|
|
|
|
const size_t LEX_CAST_BUFSIZE {64};
|
|
thread_local char lex_cast_buf[LEX_CAST_BUFS][LEX_CAST_BUFSIZE];
|
|
|
|
template<size_t N,
|
|
class T>
|
|
static string_view
|
|
_lex_cast(const T &i,
|
|
char *buf,
|
|
size_t max)
|
|
try
|
|
{
|
|
using array = std::array<char, N>;
|
|
|
|
if(!buf)
|
|
{
|
|
static thread_local uint cur;
|
|
buf = lex_cast_buf[cur++];
|
|
max = LEX_CAST_BUFSIZE;
|
|
cur %= LEX_CAST_BUFS;
|
|
}
|
|
|
|
assert(max >= N);
|
|
auto &a(*reinterpret_cast<array *>(buf));
|
|
a = boost::lexical_cast<array>(i);
|
|
return { buf, strnlen(buf, max) };
|
|
}
|
|
catch(const boost::bad_lexical_cast &e)
|
|
{
|
|
throw ircd::bad_lex_cast("%s", e.what());
|
|
}
|
|
|
|
template<class T>
|
|
static T
|
|
_lex_cast(const string_view &s)
|
|
try
|
|
{
|
|
return boost::lexical_cast<T>(s);
|
|
}
|
|
catch(const boost::bad_lexical_cast &e)
|
|
{
|
|
throw ircd::bad_lex_cast("%s", e.what());
|
|
}
|
|
|
|
} // namespace ircd
|
|
|
|
template<> ircd::string_view
|
|
ircd::lex_cast(bool i,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
static const size_t MAX(8);
|
|
return _lex_cast<MAX>(i, buf, max);
|
|
}
|
|
|
|
template<> ircd::string_view
|
|
ircd::lex_cast(int8_t i,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
static const size_t MAX(8);
|
|
return _lex_cast<MAX>(i, buf, max);
|
|
}
|
|
|
|
template<> ircd::string_view
|
|
ircd::lex_cast(uint8_t i,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
static const size_t MAX(8);
|
|
return _lex_cast<MAX>(i, buf, max);
|
|
}
|
|
|
|
template<> ircd::string_view
|
|
ircd::lex_cast(short i,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
static const size_t MAX(8);
|
|
return _lex_cast<MAX>(i, buf, max);
|
|
}
|
|
|
|
template<> ircd::string_view
|
|
ircd::lex_cast(ushort i,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
static const size_t MAX(8);
|
|
return _lex_cast<MAX>(i, buf, max);
|
|
}
|
|
|
|
template<> ircd::string_view
|
|
ircd::lex_cast(int i,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
static const size_t MAX(16);
|
|
return _lex_cast<MAX>(i, buf, max);
|
|
}
|
|
|
|
template<> ircd::string_view
|
|
ircd::lex_cast(uint i,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
static const size_t MAX(16);
|
|
return _lex_cast<MAX>(i, buf, max);
|
|
}
|
|
|
|
template<> ircd::string_view
|
|
ircd::lex_cast(long i,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
static const size_t MAX(32);
|
|
return _lex_cast<MAX>(i, buf, max);
|
|
}
|
|
|
|
template<> ircd::string_view
|
|
ircd::lex_cast(ulong i,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
static const size_t MAX(32);
|
|
return _lex_cast<MAX>(i, buf, max);
|
|
}
|
|
|
|
template<> ircd::string_view
|
|
ircd::lex_cast(double i,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
static const size_t MAX(64);
|
|
return _lex_cast<MAX>(i, buf, max);
|
|
}
|
|
|
|
template<> ircd::string_view
|
|
ircd::lex_cast(long double i,
|
|
char *const &buf,
|
|
const size_t &max)
|
|
{
|
|
static const size_t MAX(64);
|
|
return _lex_cast<MAX>(i, buf, max);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::lex_cast(const string_view &s)
|
|
{
|
|
return _lex_cast<bool>(s);
|
|
}
|
|
|
|
template<> int8_t
|
|
ircd::lex_cast(const string_view &s)
|
|
{
|
|
return _lex_cast<char>(s);
|
|
}
|
|
|
|
template<> uint8_t
|
|
ircd::lex_cast(const string_view &s)
|
|
{
|
|
return _lex_cast<unsigned char>(s);
|
|
}
|
|
|
|
template<> short
|
|
ircd::lex_cast(const string_view &s)
|
|
{
|
|
return _lex_cast<short>(s);
|
|
}
|
|
|
|
template<> unsigned short
|
|
ircd::lex_cast(const string_view &s)
|
|
{
|
|
return _lex_cast<unsigned short>(s);
|
|
}
|
|
|
|
template<> int
|
|
ircd::lex_cast(const string_view &s)
|
|
{
|
|
return _lex_cast<int>(s);
|
|
}
|
|
|
|
template<> unsigned int
|
|
ircd::lex_cast(const string_view &s)
|
|
{
|
|
return _lex_cast<unsigned int>(s);
|
|
}
|
|
|
|
template<> long
|
|
ircd::lex_cast(const string_view &s)
|
|
{
|
|
return _lex_cast<long>(s);
|
|
}
|
|
|
|
template<> unsigned long
|
|
ircd::lex_cast(const string_view &s)
|
|
{
|
|
return _lex_cast<unsigned long>(s);
|
|
}
|
|
|
|
template<> double
|
|
ircd::lex_cast(const string_view &s)
|
|
{
|
|
return _lex_cast<double>(s);
|
|
}
|
|
|
|
template<> long double
|
|
ircd::lex_cast(const string_view &s)
|
|
{
|
|
return _lex_cast<long double>(s);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::try_lex_cast<bool>(const string_view &s)
|
|
{
|
|
bool i;
|
|
return boost::conversion::try_lexical_convert(s, i);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::try_lex_cast<int8_t>(const string_view &s)
|
|
{
|
|
int8_t i;
|
|
return boost::conversion::try_lexical_convert(s, i);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::try_lex_cast<uint8_t>(const string_view &s)
|
|
{
|
|
uint8_t i;
|
|
return boost::conversion::try_lexical_convert(s, i);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::try_lex_cast<short>(const string_view &s)
|
|
{
|
|
short i;
|
|
return boost::conversion::try_lexical_convert(s, i);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::try_lex_cast<ushort>(const string_view &s)
|
|
{
|
|
ushort i;
|
|
return boost::conversion::try_lexical_convert(s, i);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::try_lex_cast<int>(const string_view &s)
|
|
{
|
|
int i;
|
|
return boost::conversion::try_lexical_convert(s, i);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::try_lex_cast<unsigned int>(const string_view &s)
|
|
{
|
|
unsigned int i;
|
|
return boost::conversion::try_lexical_convert(s, i);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::try_lex_cast<long>(const string_view &s)
|
|
{
|
|
long i;
|
|
return boost::conversion::try_lexical_convert(s, i);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::try_lex_cast<unsigned long>(const string_view &s)
|
|
{
|
|
unsigned long i;
|
|
return boost::conversion::try_lexical_convert(s, i);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::try_lex_cast<double>(const string_view &s)
|
|
{
|
|
double i;
|
|
return boost::conversion::try_lexical_convert(s, i);
|
|
}
|
|
|
|
template<> bool
|
|
ircd::try_lex_cast<long double>(const string_view &s)
|
|
{
|
|
long double i;
|
|
return boost::conversion::try_lexical_convert(s, i);
|
|
}
|
|
|
|
/*
|
|
* strip_colour - remove colour codes from a string
|
|
* -asuffield (?)
|
|
*/
|
|
char *
|
|
ircd::strip_colour(char *string)
|
|
{
|
|
char *c = string;
|
|
char *c2 = string;
|
|
char *last_non_space = NULL;
|
|
|
|
/* c is source, c2 is target */
|
|
for(; c && *c; c++)
|
|
switch (*c)
|
|
{
|
|
case 3:
|
|
if(rfc1459::is_digit(c[1]))
|
|
{
|
|
c++;
|
|
if(rfc1459::is_digit(c[1]))
|
|
c++;
|
|
if(c[1] == ',' && rfc1459::is_digit(c[2]))
|
|
{
|
|
c += 2;
|
|
if(rfc1459::is_digit(c[1]))
|
|
c++;
|
|
}
|
|
}
|
|
break;
|
|
case 2:
|
|
case 4:
|
|
case 6:
|
|
case 7:
|
|
case 15:
|
|
case 22:
|
|
case 23:
|
|
case 27:
|
|
case 29:
|
|
case 31:
|
|
break;
|
|
case 32:
|
|
*c2++ = *c;
|
|
break;
|
|
default:
|
|
*c2++ = *c;
|
|
last_non_space = c2;
|
|
break;
|
|
}
|
|
|
|
*c2 = '\0';
|
|
|
|
if(last_non_space)
|
|
*last_non_space = '\0';
|
|
|
|
return string;
|
|
}
|
|
|
|
char *
|
|
ircd::strip_unprintable(char *string)
|
|
{
|
|
char *c = string;
|
|
char *c2 = string;
|
|
char *last_non_space = NULL;
|
|
|
|
/* c is source, c2 is target */
|
|
for(; c && *c; c++)
|
|
switch (*c)
|
|
{
|
|
case 3:
|
|
if(rfc1459::is_digit(c[1]))
|
|
{
|
|
c++;
|
|
if(rfc1459::is_digit(c[1]))
|
|
c++;
|
|
if(c[1] == ',' && rfc1459::is_digit(c[2]))
|
|
{
|
|
c += 2;
|
|
if(rfc1459::is_digit(c[1]))
|
|
c++;
|
|
}
|
|
}
|
|
break;
|
|
case 32:
|
|
*c2++ = *c;
|
|
break;
|
|
default:
|
|
if (*c < 32)
|
|
break;
|
|
*c2++ = *c;
|
|
last_non_space = c2;
|
|
break;
|
|
}
|
|
|
|
*c2 = '\0';
|
|
|
|
if(last_non_space)
|
|
*last_non_space = '\0';
|
|
|
|
return string;
|
|
}
|
|
|
|
// This is from the old parse.c and does not ensure the trailing :is added
|
|
// NOTE: Deprecated. Use formal grammar.
|
|
char *
|
|
ircd::reconstruct_parv(int parc, const char *parv[])
|
|
{
|
|
static char tmpbuf[BUFSIZE];
|
|
|
|
strlcpy(tmpbuf, parv[0], BUFSIZE);
|
|
for (int i = 1; i < parc; i++)
|
|
{
|
|
strlcat(tmpbuf, " ", BUFSIZE);
|
|
strlcat(tmpbuf, parv[i], BUFSIZE);
|
|
}
|
|
|
|
return tmpbuf;
|
|
}
|