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wownero/contrib/epee/include/string_tools.h
moneromooo-monero 59776a64ff
epee: some more minor JSON parsing speedup
2019-03-25 14:29:29 +00:00

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// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the Andrey N. Sabelnikov nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#ifndef _STRING_TOOLS_H_
#define _STRING_TOOLS_H_
// Previously pulled in by ASIO, further cleanup still required ...
#ifdef _WIN32
# include <winsock2.h>
# include <windows.h>
#endif
#include <string.h>
#include <locale>
#include <cstdlib>
#include <string>
#include <type_traits>
#include <boost/lexical_cast.hpp>
#include <boost/algorithm/string/predicate.hpp>
#include "misc_log_ex.h"
#include "storages/parserse_base_utils.h"
#include "hex.h"
#include "memwipe.h"
#include "mlocker.h"
#include "span.h"
#include "warnings.h"
#ifndef OUT
#define OUT
#endif
#ifdef WINDOWS_PLATFORM
#pragma comment (lib, "Rpcrt4.lib")
#endif
static const constexpr unsigned char isx[256] =
{
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 10, 11, 12, 13, 14, 15, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 10, 11, 12, 13, 14, 15, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
};
namespace epee
{
namespace string_tools
{
//----------------------------------------------------------------------------
inline std::string buff_to_hex_nodelimer(const std::string& src)
{
return to_hex::string(to_byte_span(to_span(src)));
}
//----------------------------------------------------------------------------
inline bool parse_hexstr_to_binbuff(const epee::span<const char> s, epee::span<char>& res)
{
if (s.size() != res.size() * 2)
return false;
unsigned char *dst = (unsigned char *)&res[0];
const unsigned char *src = (const unsigned char *)s.data();
for(size_t i = 0; i < s.size(); i += 2)
{
int tmp = *src++;
tmp = isx[tmp];
if (tmp == 0xff) return false;
int t2 = *src++;
t2 = isx[t2];
if (t2 == 0xff) return false;
*dst++ = (tmp << 4) | t2;
}
return true;
}
//----------------------------------------------------------------------------
inline bool parse_hexstr_to_binbuff(const std::string& s, std::string& res)
{
if (s.size() & 1)
return false;
res.resize(s.size() / 2);
epee::span<char> rspan((char*)&res[0], res.size());
return parse_hexstr_to_binbuff(epee::to_span(s), rspan);
}
//----------------------------------------------------------------------------
PUSH_WARNINGS
DISABLE_GCC_WARNING(maybe-uninitialized)
template<class XType>
inline bool get_xtype_from_string(OUT XType& val, const std::string& str_id)
{
if (std::is_integral<XType>::value && !std::numeric_limits<XType>::is_signed && !std::is_same<XType, bool>::value)
{
for (char c : str_id)
{
if (!epee::misc_utils::parse::isdigit(c))
return false;
}
}
try
{
val = boost::lexical_cast<XType>(str_id);
return true;
}
catch(const std::exception& /*e*/)
{
//const char* pmsg = e.what();
return false;
}
catch(...)
{
return false;
}
return true;
}
POP_WARNINGS
//----------------------------------------------------------------------------
template<class XType>
inline bool xtype_to_string(const XType& val, std::string& str)
{
try
{
str = boost::lexical_cast<std::string>(val);
}
catch(...)
{
return false;
}
return true;
}
//----------------------------------------------------------------------------
std::string get_ip_string_from_int32(uint32_t ip);
//----------------------------------------------------------------------------
bool get_ip_int32_from_string(uint32_t& ip, const std::string& ip_str);
//----------------------------------------------------------------------------
inline bool parse_peer_from_string(uint32_t& ip, uint16_t& port, const std::string& addres)
{
//parse ip and address
std::string::size_type p = addres.find(':');
std::string ip_str, port_str;
if(p == std::string::npos)
{
port = 0;
ip_str = addres;
}
else
{
ip_str = addres.substr(0, p);
port_str = addres.substr(p+1, addres.size());
}
if(!get_ip_int32_from_string(ip, ip_str))
{
return false;
}
if(p != std::string::npos && !get_xtype_from_string(port, port_str))
{
return false;
}
return true;
}
inline std::string num_to_string_fast(int64_t val)
{
/*
char buff[30] = {0};
i64toa_s(val, buff, sizeof(buff)-1, 10);
return buff;*/
return boost::lexical_cast<std::string>(val);
}
//----------------------------------------------------------------------------
inline std::string to_string_hex(uint32_t val)
{
std::stringstream ss;
ss << std::hex << val;
std::string s;
ss >> s;
return s;
}
//----------------------------------------------------------------------------
inline bool compare_no_case(const std::string& str1, const std::string& str2)
{
return !boost::iequals(str1, str2);
}
//----------------------------------------------------------------------------
inline std::string& get_current_module_name()
{
static std::string module_name;
return module_name;
}
//----------------------------------------------------------------------------
inline std::string& get_current_module_folder()
{
static std::string module_folder;
return module_folder;
}
//----------------------------------------------------------------------------
#ifdef _WIN32
inline std::string get_current_module_path()
{
char pname [5000] = {0};
GetModuleFileNameA( NULL, pname, sizeof(pname));
pname[sizeof(pname)-1] = 0; //be happy ;)
return pname;
}
#endif
//----------------------------------------------------------------------------
inline bool set_module_name_and_folder(const std::string& path_to_process_)
{
std::string path_to_process = path_to_process_;
#ifdef _WIN32
path_to_process = get_current_module_path();
#endif
std::string::size_type a = path_to_process.rfind( '\\' );
if(a == std::string::npos )
{
a = path_to_process.rfind( '/' );
}
if ( a != std::string::npos )
{
get_current_module_name() = path_to_process.substr(a+1, path_to_process.size());
get_current_module_folder() = path_to_process.substr(0, a);
return true;
}else
return false;
}
//----------------------------------------------------------------------------
inline bool trim_left(std::string& str)
{
for(std::string::iterator it = str.begin(); it!= str.end() && isspace(static_cast<unsigned char>(*it));)
str.erase(str.begin());
return true;
}
//----------------------------------------------------------------------------
inline bool trim_right(std::string& str)
{
for(std::string::reverse_iterator it = str.rbegin(); it!= str.rend() && isspace(static_cast<unsigned char>(*it));)
str.erase( --((it++).base()));
return true;
}
//----------------------------------------------------------------------------
inline std::string& trim(std::string& str)
{
trim_left(str);
trim_right(str);
return str;
}
//----------------------------------------------------------------------------
inline std::string trim(const std::string& str_)
{
std::string str = str_;
trim_left(str);
trim_right(str);
return str;
}
//----------------------------------------------------------------------------
inline std::string pad_string(std::string s, size_t n, char c = ' ', bool prepend = false)
{
if (s.size() < n)
{
if (prepend)
s = std::string(n - s.size(), c) + s;
else
s.append(n - s.size(), c);
}
return s;
}
//----------------------------------------------------------------------------
template<class t_pod_type>
std::string pod_to_hex(const t_pod_type& s)
{
static_assert(std::is_standard_layout<t_pod_type>(), "expected standard layout type");
return to_hex::string(as_byte_span(s));
}
//----------------------------------------------------------------------------
template<class t_pod_type>
bool hex_to_pod(const std::string& hex_str, t_pod_type& s)
{
static_assert(std::is_pod<t_pod_type>::value, "expected pod type");
if(sizeof(s)*2 != hex_str.size())
return false;
epee::span<char> rspan((char*)&s, sizeof(s));
return parse_hexstr_to_binbuff(epee::to_span(hex_str), rspan);
}
//----------------------------------------------------------------------------
template<class t_pod_type>
bool hex_to_pod(const std::string& hex_str, tools::scrubbed<t_pod_type>& s)
{
return hex_to_pod(hex_str, unwrap(s));
}
//----------------------------------------------------------------------------
template<class t_pod_type>
bool hex_to_pod(const std::string& hex_str, epee::mlocked<t_pod_type>& s)
{
return hex_to_pod(hex_str, unwrap(s));
}
//----------------------------------------------------------------------------
bool validate_hex(uint64_t length, const std::string& str);
//----------------------------------------------------------------------------
inline std::string get_extension(const std::string& str)
{
std::string res;
std::string::size_type pos = str.rfind('.');
if(std::string::npos == pos)
return res;
res = str.substr(pos+1, str.size()-pos);
return res;
}
//----------------------------------------------------------------------------
inline std::string cut_off_extension(const std::string& str)
{
std::string res;
std::string::size_type pos = str.rfind('.');
if(std::string::npos == pos)
return str;
res = str.substr(0, pos);
return res;
}
//----------------------------------------------------------------------------
#ifdef _WIN32
inline std::wstring utf8_to_utf16(const std::string& str)
{
if (str.empty())
return {};
int wstr_size = MultiByteToWideChar(CP_UTF8, 0, &str[0], str.size(), NULL, 0);
if (wstr_size == 0)
{
throw std::runtime_error(std::error_code(GetLastError(), std::system_category()).message());
}
std::wstring wstr(wstr_size, wchar_t{});
if (!MultiByteToWideChar(CP_UTF8, 0, &str[0], str.size(), &wstr[0], wstr_size))
{
throw std::runtime_error(std::error_code(GetLastError(), std::system_category()).message());
}
return wstr;
}
inline std::string utf16_to_utf8(const std::wstring& wstr)
{
if (wstr.empty())
return {};
int str_size = WideCharToMultiByte(CP_UTF8, 0, &wstr[0], wstr.size(), NULL, 0, NULL, NULL);
if (str_size == 0)
{
throw std::runtime_error(std::error_code(GetLastError(), std::system_category()).message());
}
std::string str(str_size, char{});
if (!WideCharToMultiByte(CP_UTF8, 0, &wstr[0], wstr.size(), &str[0], str_size, NULL, NULL))
{
throw std::runtime_error(std::error_code(GetLastError(), std::system_category()).message());
}
return str;
}
#endif
}
}
#endif //_STRING_TOOLS_H_
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