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/*
*
* Copyright (c) 1998-2002
* John Maddock
*
* Use, modification and distribution are subject to the
* Boost Software License, Version 1.0. (See accompanying file
* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*
*/
/*
* LOCATION: see http://www.boost.org for most recent version.
* FILE: posix_api.cpp
* VERSION: see <boost/version.hpp>
* DESCRIPTION: Implements the Posix API wrappers.
*/
#define BOOST_REGEX_SOURCE
#include <boost/regex.hpp>
#include <boost/cregex.hpp>
#include <cstdio>
#ifndef BOOST_WORKAROUND
#define BOOST_WORKAROUND(x, y) false
#endif
#ifndef BOOST_REGEX_STANDALONE
#include <boost/core/snprintf.hpp>
#else
namespace boost { namespace core { using std::snprintf; } }
#endif
namespace boost{
namespace{
unsigned int magic_value = 25631;
const char* names[] = {
"REG_NOERROR",
"REG_NOMATCH",
"REG_BADPAT",
"REG_ECOLLATE",
"REG_ECTYPE",
"REG_EESCAPE",
"REG_ESUBREG",
"REG_EBRACK",
"REG_EPAREN",
"REG_EBRACE",
"REG_BADBR",
"REG_ERANGE",
"REG_ESPACE",
"REG_BADRPT",
"REG_EEND",
"REG_ESIZE",
"REG_ERPAREN",
"REG_EMPTY",
"REG_ECOMPLEXITY",
"REG_ESTACK",
"REG_E_PERL",
"REG_E_UNKNOWN",
};
} // namespace
typedef boost::basic_regex<char, c_regex_traits<char> > c_regex_type;
#ifdef BOOST_MSVC
# pragma warning(push)
#pragma warning(disable:26812)
#endif
BOOST_REGEX_DECL int BOOST_REGEX_CCALL regcompA(regex_tA* expression, const char* ptr, int f)
{
#ifndef BOOST_NO_EXCEPTIONS
try{
#endif
expression->guts = new c_regex_type();
#ifndef BOOST_NO_EXCEPTIONS
} catch(...)
{
expression->guts = 0;
return REG_ESPACE;
}
#else
if(0 == expression->guts)
return REG_E_MEMORY;
#endif
// set default flags:
unsigned flags = (f & REG_PERLEX) ? 0 : ((f & REG_EXTENDED) ? regex::extended : regex::basic);
expression->eflags = (f & REG_NEWLINE) ? match_not_dot_newline : match_default;
// and translate those that are actually set:
if(f & REG_NOCOLLATE)
{
flags |= regex::nocollate;
#ifndef BOOST_REGEX_V3
flags &= ~regex::collate;
#endif
}
if(f & REG_NOSUB)
{
//expression->eflags |= match_any;
flags |= regex::nosubs;
}
if(f & REG_NOSPEC)
flags |= regex::literal;
if(f & REG_ICASE)
flags |= regex::icase;
if(f & REG_ESCAPE_IN_LISTS)
flags &= ~regex::no_escape_in_lists;
if(f & REG_NEWLINE_ALT)
flags |= regex::newline_alt;
const char* p2;
if(f & REG_PEND)
p2 = expression->re_endp;
else p2 = ptr + std::strlen(ptr);
int result;
#ifndef BOOST_NO_EXCEPTIONS
try{
#endif
expression->re_magic = magic_value;
static_cast<c_regex_type*>(expression->guts)->set_expression(ptr, p2, flags);
expression->re_nsub = static_cast<c_regex_type*>(expression->guts)->mark_count();
result = static_cast<c_regex_type*>(expression->guts)->error_code();
#ifndef BOOST_NO_EXCEPTIONS
}
catch(const boost::regex_error& be)
{
result = be.code();
}
catch(...)
{
result = REG_E_UNKNOWN;
}
#endif
if(result)
regfreeA(expression);
return result;
}
#ifdef BOOST_MSVC
# pragma warning(pop)
#endif
BOOST_REGEX_DECL regsize_t BOOST_REGEX_CCALL regerrorA(int code, const regex_tA* e, char* buf, regsize_t buf_size)
{
std::size_t result = 0;
if(code & REG_ITOA)
{
code &= ~REG_ITOA;
if(code <= (int)REG_E_UNKNOWN)
{
result = std::strlen(names[code]) + 1;
if(buf_size >= result)
BOOST_REGEX_DETAIL_NS::strcpy_s(buf, buf_size, names[code]);
return result;
}
return result;
}
if(code == REG_ATOI)
{
char localbuf[5];
if(e == 0)
return 0;
for(int i = 0; i <= (int)REG_E_UNKNOWN; ++i)
{
if(std::strcmp(e->re_endp, names[i]) == 0)
{
//
// We're converting an integer i to a string, and since i <= REG_E_UNKNOWN
// a five character string is *always* large enough:
//
int r = (boost::core::snprintf)(localbuf, 5, "%d", i);
if(r < 0)
return 0; // sprintf failed
if(std::strlen(localbuf) < buf_size)
BOOST_REGEX_DETAIL_NS::strcpy_s(buf, buf_size, localbuf);
return std::strlen(localbuf) + 1;
}
}
int r = (boost::core::snprintf)(localbuf, 5, "%d", 0);
if(r < 0)
return 0; // sprintf failed
if(std::strlen(localbuf) < buf_size)
BOOST_REGEX_DETAIL_NS::strcpy_s(buf, buf_size, localbuf);
return std::strlen(localbuf) + 1;
}
if(code <= (int)REG_E_UNKNOWN)
{
std::string p;
if((e) && (e->re_magic == magic_value))
p = static_cast<c_regex_type*>(e->guts)->get_traits().error_string(static_cast< ::boost::regex_constants::error_type>(code));
else
{
p = BOOST_REGEX_DETAIL_NS::get_default_error_string(static_cast< ::boost::regex_constants::error_type>(code));
}
std::size_t len = p.size();
if(len < buf_size)
{
BOOST_REGEX_DETAIL_NS::strcpy_s(buf, buf_size, p.c_str());
}
return len + 1;
}
if(buf_size)
*buf = 0;
return 0;
}
BOOST_REGEX_DECL int BOOST_REGEX_CCALL regexecA(const regex_tA* expression, const char* buf, regsize_t n, regmatch_t* array, int eflags)
{
#ifdef BOOST_MSVC
#pragma warning(push)
#pragma warning(disable:4267)
#endif
bool result = false;
match_flag_type flags = match_default | expression->eflags;
const char* end;
const char* start;
cmatch m;
if(eflags & REG_NOTBOL)
flags |= match_not_bol;
if(eflags & REG_NOTEOL)
flags |= match_not_eol;
if(eflags & REG_STARTEND)
{
start = buf + array[0].rm_so;
end = buf + array[0].rm_eo;
}
else
{
start = buf;
end = buf + std::strlen(buf);
}
#ifndef BOOST_NO_EXCEPTIONS
try{
#endif
if(expression->re_magic == magic_value)
{
result = regex_search(start, end, m, *static_cast<c_regex_type*>(expression->guts), flags);
}
else
return result;
#ifndef BOOST_NO_EXCEPTIONS
} catch(...)
{
return REG_E_UNKNOWN;
}
#endif
if(result)
{
// extract what matched:
std::size_t i;
for(i = 0; (i < n) && (i < expression->re_nsub + 1); ++i)
{
array[i].rm_so = m[i].matched ? (m[i].first - buf) : -1;
array[i].rm_eo = m[i].matched ? (m[i].second - buf) : -1;
}
// and set anything else to -1:
for(i = expression->re_nsub + 1; i < n; ++i)
{
array[i].rm_so = -1;
array[i].rm_eo = -1;
}
return 0;
}
return REG_NOMATCH;
#ifdef BOOST_MSVC
#pragma warning(pop)
#endif
}
BOOST_REGEX_DECL void BOOST_REGEX_CCALL regfreeA(regex_tA* expression)
{
if(expression->re_magic == magic_value)
{
delete static_cast<c_regex_type*>(expression->guts);
}
expression->re_magic = 0;
}
} // namespace boost
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