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common_be.h
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common_be.h
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/*
Copyright (C) 2019-2024 Selwin van Dijk
This file is part of signalbackup-tools.
signalbackup-tools 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 3 of the License, or
(at your option) any later version.
signalbackup-tools 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 signalbackup-tools. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef COMMON_BE_H_
#define COMMON_BE_H_
#include <cstddef>
#include <cstdint>
#include <iomanip>
#include <memory>
#include <sstream>
#include <vector>
#include <cstring>
#include <algorithm>
#include <ctime>
#if __cpp_lib_format >= 201907L
#include <format>
#endif
#ifdef DEBUGMSG
#define DEBUGOUT(...) bepaald::log("[DEBUG] : ", __PRETTY_FUNCTION__," : ", __VA_ARGS__);
#else
#define DEBUGOUT(...)
#endif
#ifdef DEBUGISSUE
#define DEBUGOUT2(...) bepaald::log("[DEBUG] : ", __VA_ARGS__);
#else
#define DEBUGOUT2(...)
#endif
#define STRLEN( STR ) (bepaald::strlitLength(STR))
#if __cpp_lib_starts_ends_with >= 201711L
#define STRING_STARTS_WITH( STR, SUB ) ( STR.starts_with(SUB) )
#else
#define STRING_STARTS_WITH( STR, SUB ) ( STR.substr(0, STRLEN(SUB)) == SUB )
#endif
using std::literals::string_literals::operator""s;
namespace bepaald
{
#if defined DEBUGMSG || DEBUGISSUE
template<typename ...Args>
inline void log(Args && ...args);
#endif
template <typename T, typename S>
T toNumber(S const &str, T def = 0, typename std::enable_if<std::is_integral<T>::value && (std::is_same_v<S, std::string> || std::is_same_v<S, std::string_view>)>::type *dummy = nullptr);
template <typename T>
T toNumber(std::string const &str, T def = 0, typename std::enable_if<!std::is_integral<T>::value>::type *dummy = nullptr);
template <typename T>
T toNumberFromHex(std::string const &str, T def = 0);
template <typename P, typename T>
void destroyPtr(P **p, T *psize);
template <typename T>
inline std::string toString(T const &num, typename std::enable_if<std::is_integral<T>::value>::type *dummy = nullptr);
template <typename T>
inline std::string toHexString(T const &num, typename std::enable_if<std::is_integral<T>::value>::type *dummy = nullptr);
inline std::string toString(double num);
inline constexpr int strlitLength(char const *str, int pos = 0);
inline int strlitLength(std::string const &str);
inline int numDigits(long long int num);
inline std::string toDateString(std::time_t epoch, std::string const &format);
inline std::string toLower(std::string s);
inline std::string toUpper(std::string s);
inline void replaceAll(std::string *in, char from, std::string const &to);
inline void replaceAll(std::string *in, std::string const &from, std::string const &to);
template <typename T, typename I>
class container_has_contains
{
template<typename> static std::false_type test(...);
template<typename U> static constexpr auto test(int) -> decltype(std::declval<U>().contains(std::declval<I>()), std::true_type());
public:
static constexpr bool value = std::is_same<decltype(test<T>(0)), std::true_type>::value;
};
template <typename T, typename I>
class container_has_find
{
template<typename> static std::false_type test(...);
template<typename U> static constexpr auto test(int) -> decltype(std::declval<U>().find(std::declval<I>()), std::true_type());
public:
static constexpr bool value = std::is_same<decltype(test<T>(0)), std::true_type>::value;
};
template <typename T, typename I>
inline constexpr bool contains(T const &container, I const &item, typename std::enable_if<!std::is_pointer<T>::value>::type *dummy [[maybe_unused]] = nullptr)
{
if constexpr (container_has_contains<T, I>::value)
return container.contains(item);
else if constexpr (container_has_find<T, I>::value)
return container.find(item) != container.end();
else
return std::find(container.begin(), container.end(), item) != container.end();
}
template <typename T, typename I>
inline constexpr bool contains(T const *const container, I const &item)
{
if constexpr (container_has_contains<T, I>::value)
return container->contains(item);
else if constexpr (container_has_find<T, I>::value)
return container->find(item) != container->end();
else
return std::find(container->begin(), container->end(), item) != container->end();
}
template <typename T, typename U>
inline int findIdxOf(T const &container, U const &value);
}
#if defined DEBUGMSG || DEBUGISSUE
template<typename ...Args>
inline void bepaald::log(Args && ...args)
{
std::cout.copyfmt(std::ios(nullptr));
(std::cout << ... << args) << std::endl;
}
#endif
//#include <iostream>
template <typename T, typename S>
T bepaald::toNumber(S const &str, T def, typename std::enable_if<std::is_integral<T>::value && (std::is_same_v<S, std::string> || std::is_same_v<S, std::string_view>)>::type *)
{
if (str.empty()) [[unlikely]]
return def;
int sign = 1;
int lowestpos = 0;
if (str[0] == '-') [[unlikely]]
{
++lowestpos;
sign = -1;
}
T value = 0;
T multi = 1;
for (int i = str.size() - 1; i >= lowestpos; --i)
{
value += static_cast<T>((str[i] - '0')) * multi;
multi *= 10;
if (str[i] > '9' || value < 0) [[unlikely]]
return def;
}
return value * sign;
// std::istringstream s(str);
// T i = def;
// if (!(s >> i)) [[unlikely]]
// return def;
// return i;
}
// non-integral to number, not ever called I dont think
template <typename T>
T bepaald::toNumber(std::string const &str, T def, typename std::enable_if<!std::is_integral<T>::value>::type *)
{
std::istringstream s(str);
T i = def;
if (!(s >> i)) [[unlikely]]
return def;
return i;
}
template <typename T>
T bepaald::toNumberFromHex(std::string const &str, T def)
{
std::istringstream s(str);
T i = def;
if (!(s >> std::hex >> i >> std::dec)) [[unlikely]]
return def;
return i;
}
template <typename P, typename T>
inline void bepaald::destroyPtr(P **p, T *psize)
{
if (*p)
{
delete[] *p;
*p = nullptr;
*psize = 0;
}
}
template <typename T>
inline std::string bepaald::toString(T const &num, typename std::enable_if<std::is_integral<T>::value>::type *)
{
return std::to_string(num);
//std::ostringstream oss;
//oss << std::dec << num;
//return oss.str();
}
template <typename T>
inline std::string bepaald::toHexString(T const &num, typename std::enable_if<std::is_integral<T>::value>::type *)
{
#if __cpp_lib_format >= 201907L
return std::format("{:x}", num);
#else
std::ostringstream oss;
oss << std::hex << num << std::dec;
return oss.str();
#endif
}
inline std::string bepaald::toString(double num)
{
std::ostringstream oss;
oss << std::defaultfloat << std::setprecision(17) << num;
return oss.str();
}
inline constexpr int bepaald::strlitLength(char const *str, int pos)
{
return str[pos] == '\0' ? 0 : 1 + strlitLength(str, pos + 1);
}
inline int bepaald::strlitLength(std::string const &str)
{
return str.size();
}
inline int bepaald::numDigits(long long int num)
{
int count = 0;
while (num)
{
num /= 10;
++count;
}
return count;
}
inline std::string bepaald::toDateString(std::time_t epoch, std::string const &format)
{
std::ostringstream tmp;
tmp << std::put_time(std::localtime(&epoch), format.c_str());
return tmp.str();
}
inline std::string bepaald::toLower(std::string s)
{
std::transform(s.begin(), s.end(), s.begin(), [](unsigned char c){ return std::tolower(c); });
return s;
}
inline std::string bepaald::toUpper(std::string s)
{
std::transform(s.begin(), s.end(), s.begin(), [](unsigned char c){ return std::tolower(c); });
return s;
}
inline void bepaald::replaceAll(std::string *in, char from, std::string const &to)
{
replaceAll(in, std::string(1, from), to);
}
inline void bepaald::replaceAll(std::string *in, std::string const &from, std::string const &to)
{
size_t start_pos = 0;
while ((start_pos = in->find(from, start_pos)) != std::string::npos)
{
in->replace(start_pos, from.length(), to);
start_pos += to.length();
}
}
template <typename T, typename U>
inline int bepaald::findIdxOf(T const &container, U const &value)
{
auto it = std::find(container.begin(), container.end(), value);
if (it == container.end())
return -1;
return std::distance(container.begin(), it);
}
#ifdef SIGNALBACKUP_TOOLS_REPORT_MEM
#define MEMINFO(...) process_mem_usage(__VA_ARGS__)
#include <unistd.h>
#include <fstream>
#include <string>
#include <iostream>
// code adapted from https://stackoverflow.com/questions/669438 by Don Wakefield
template<typename ...Args>
void process_mem_usage(Args && ...args)
{
std::cout.copyfmt(std::ios(nullptr));
(std::cout << ... << args) << std::endl;
// the two fields we want
unsigned long vsize = 0;
long rss = 0;
{
// dummy vars for leading entries in stat that we don't care about
std::string dummy;
// 'file' stat seems to give the most reliable results
std::ifstream stat_stream("/proc/self/stat", std::ios_base::in);
stat_stream >> dummy >> dummy >> dummy >> dummy >> dummy >> dummy
>> dummy >> dummy >> dummy >> dummy >> dummy >> dummy
>> dummy >> dummy >> dummy >> dummy >> dummy >> dummy
>> dummy >> dummy >> dummy >> dummy >> vsize >> rss; // don't care about the rest
}
long page_size_kb = sysconf(_SC_PAGE_SIZE) / 1024; // in case x86-64 is configured to use 2MB pages
double vm_usage = vsize / 1024.0;
double resident_set = rss * page_size_kb;
std::cout << " *** VM: " << std::fixed << std::setprecision(2) << (vm_usage / 1024) << "MB ; RSS: " << (resident_set / 1024) << "MB" << std::endl;
}
#else
#define MEMINFO(...)
#endif
#endif