mirror of
https://github.com/Detanup01/gbe_fork.git
synced 2024-12-26 02:14:15 +08:00
436 lines
12 KiB
C++
436 lines
12 KiB
C++
#include "common_helpers/common_helpers.hpp"
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#include <fstream>
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#include <cwchar>
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#include <algorithm>
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#include <cctype>
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#include <random>
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// for gmtime_s()
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#define __STDC_WANT_LIB_EXT1__ 1
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#include <time.h>
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namespace common_helpers {
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KillableWorker::KillableWorker(
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std::function<bool(void *)> thread_job,
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std::chrono::milliseconds initial_delay,
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std::chrono::milliseconds polling_time,
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std::function<bool()> should_kill)
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{
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this->thread_job = thread_job;
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this->initial_delay = initial_delay;
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this->polling_time = polling_time;
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this->should_kill = should_kill;
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}
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KillableWorker::~KillableWorker()
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{
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kill();
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}
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KillableWorker& KillableWorker::operator=(const KillableWorker &other)
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{
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if (&other == this) {
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return *this;
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}
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kill();
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thread_obj = {};
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initial_delay = other.initial_delay;
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polling_time = other.polling_time;
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should_kill = other.should_kill;
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thread_job = other.thread_job;
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return *this;
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}
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void KillableWorker::thread_proc(void *data)
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{
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// wait for some time
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if (initial_delay.count() > 0) {
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std::unique_lock lck(kill_thread_mutex);
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if (kill_thread_cv.wait_for(lck, initial_delay, [this]{ return this->kill_thread || (this->should_kill && this->should_kill()); })) {
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return;
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}
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}
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while (1) {
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if (polling_time.count() > 0) {
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std::unique_lock lck(kill_thread_mutex);
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if (kill_thread_cv.wait_for(lck, polling_time, [this]{ return this->kill_thread || (this->should_kill && this->should_kill()); })) {
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return;
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}
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}
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if (thread_job(data)) { // job is done
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return;
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}
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}
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}
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bool KillableWorker::start(void *data)
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{
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if (!thread_job) return false; // no work to do
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if (thread_obj.joinable()) return true; // alrady spawned
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kill_thread = false;
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thread_obj = std::thread([this, data] { thread_proc(data); });
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return true;
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}
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void KillableWorker::kill()
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{
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if (!thread_job || !thread_obj.joinable()) return; // already killed
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{
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std::lock_guard lk(kill_thread_mutex);
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kill_thread = true;
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}
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kill_thread_cv.notify_one();
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thread_obj.join();
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}
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}
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static bool create_dir_impl(std::filesystem::path &dirpath)
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{
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if (std::filesystem::is_directory(dirpath))
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{
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return true;
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}
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else if (std::filesystem::exists(dirpath)) // a file, we can't do anything
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{
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return false;
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}
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return std::filesystem::create_directories(dirpath);
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}
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bool common_helpers::create_dir(const std::string_view &filepath)
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{
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std::filesystem::path parent(std::filesystem::u8path(filepath).parent_path());
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return create_dir_impl(parent);
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}
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bool common_helpers::create_dir(const std::wstring_view &filepath)
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{
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std::filesystem::path parent(std::filesystem::path(filepath).parent_path());
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return create_dir_impl(parent);
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}
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void common_helpers::write(std::ofstream &file, const std::string_view &data)
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{
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if (!file.is_open()) {
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return;
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}
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file << data << std::endl;
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}
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std::wstring common_helpers::str_to_w(const std::string_view &str)
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{
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if (str.empty()) return std::wstring();
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auto cvt_state = std::mbstate_t();
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const char* src = &str[0];
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size_t conversion_bytes = std::mbsrtowcs(nullptr, &src, 0, &cvt_state);
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std::wstring res(conversion_bytes + 1, L'\0');
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std::mbsrtowcs(&res[0], &src, res.size(), &cvt_state);
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return res.substr(0, conversion_bytes);
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}
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std::string common_helpers::wstr_to_a(const std::wstring_view &wstr)
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{
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if (wstr.empty()) return std::string();
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auto cvt_state = std::mbstate_t();
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const wchar_t* src = &wstr[0];
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size_t conversion_bytes = std::wcsrtombs(nullptr, &src, 0, &cvt_state);
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std::string res(conversion_bytes + 1, '\0');
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std::wcsrtombs(&res[0], &src, res.size(), &cvt_state);
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return res.substr(0, conversion_bytes);
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}
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bool common_helpers::starts_with_i(const std::string_view &target, const std::string_view &query)
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{
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if (target.size() < query.size()) {
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return false;
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}
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return str_cmp_insensitive(target.substr(0, query.size()), query);
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}
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bool common_helpers::starts_with_i(const std::wstring_view &target, const std::wstring_view &query)
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{
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if (target.size() < query.size()) {
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return false;
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}
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return str_cmp_insensitive(target.substr(0, query.size()), query);
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}
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bool common_helpers::ends_with_i(const std::string_view &target, const std::string_view &query)
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{
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if (target.size() < query.size()) {
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return false;
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}
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const auto target_offset = target.length() - query.length();
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return str_cmp_insensitive(target.substr(target_offset), query);
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}
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bool common_helpers::ends_with_i(const std::wstring_view &target, const std::wstring_view &query)
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{
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if (target.size() < query.size()) {
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return false;
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}
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const auto target_offset = target.length() - query.length();
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return str_cmp_insensitive(target.substr(target_offset), query);
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}
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std::string common_helpers::string_strip(const std::string_view &str)
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{
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static constexpr const char whitespaces[] = " \t\r\n";
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if (str.empty()) return {};
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size_t start = str.find_first_not_of(whitespaces);
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size_t end = str.find_last_not_of(whitespaces);
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if (start == std::string::npos) return {};
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if (start == end) { // happens when string is 1 char
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auto c = str[start];
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for (auto c_white = whitespaces; *c_white; ++c_white) {
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if (c == *c_white) return {};
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}
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}
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return std::string(str.substr(start, end - start + 1));
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}
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std::string common_helpers::uint8_vector_to_hex_string(const std::vector<uint8_t> &v)
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{
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std::string result{};
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result.reserve(v.size() * 2); // two digits per character
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static constexpr const char hex[] = "0123456789ABCDEF";
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for (uint8_t c : v) {
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result.push_back(hex[c / 16]);
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result.push_back(hex[c % 16]);
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}
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return result;
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}
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bool common_helpers::str_cmp_insensitive(const std::string_view &str1, const std::string_view &str2)
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{
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if (str1.size() != str2.size()) return false;
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return std::equal(str1.begin(), str1.end(), str2.begin(), [](const char c1, const char c2){
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return std::toupper(c1) == std::toupper(c2);
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});
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}
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bool common_helpers::str_cmp_insensitive(const std::wstring_view &str1, const std::wstring_view &str2)
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{
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if (str1.size() != str2.size()) return false;
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return std::equal(str1.begin(), str1.end(), str2.begin(), [](const wchar_t c1, const wchar_t c2){
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return std::toupper(c1) == std::toupper(c2);
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});
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}
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std::string common_helpers::ascii_to_lowercase(std::string data) {
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std::transform(data.begin(), data.end(), data.begin(),
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[](char c){ return std::tolower(c); });
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return data;
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}
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void common_helpers::thisThreadYieldFor(std::chrono::microseconds u)
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{
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const auto start = std::chrono::high_resolution_clock::now();
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const auto end = start + u;
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do {
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std::this_thread::yield();
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} while (std::chrono::high_resolution_clock::now() < end);
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}
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void common_helpers::consume_bom(std::ifstream &input)
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{
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if (!input.is_open()) return;
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auto pos = input.tellg();
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int bom[3]{};
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bom[0] = input.get();
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bom[1] = input.get();
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bom[2] = input.get();
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if (bom[0] != 0xEF || bom[1] != 0xBB || bom[2] != 0xBF) {
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input.clear();
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input.seekg(pos, std::ios::beg);
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}
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}
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std::string common_helpers::to_lower(const std::string_view &str)
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{
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if (str.empty()) return {};
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std::string _str(str.size(), '\0');
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std::transform(str.begin(), str.end(), _str.begin(), [](char c) { return std::tolower(c); });
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return _str;
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}
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std::wstring common_helpers::to_lower(const std::wstring_view &wstr)
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{
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if (wstr.empty()) return {};
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std::wstring _wstr(wstr.size(), '\0');
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std::transform(wstr.begin(), wstr.end(), _wstr.begin(), [](wchar_t c) { return std::tolower(c); });
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return _wstr;
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}
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std::string common_helpers::to_upper(const std::string_view &str)
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{
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if (str.empty()) return {};
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std::string _str(str.size(), '\0');
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std::transform(str.begin(), str.end(), _str.begin(), [](char c) { return std::toupper(c); });
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return _str;
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}
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std::wstring common_helpers::to_upper(const std::wstring_view &wstr)
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{
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if (wstr.empty()) return {};
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std::wstring _wstr(wstr.size(), '\0');
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std::transform(wstr.begin(), wstr.end(), _wstr.begin(), [](wchar_t c) { return std::toupper(c); });
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return _wstr;
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}
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static std::filesystem::path to_absolute_impl(const std::filesystem::path &path, const std::filesystem::path &base)
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{
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if (path.is_absolute()) {
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return path;
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}
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return std::filesystem::absolute(base / path);
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}
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std::string common_helpers::to_absolute(const std::string_view &path, const std::string_view &base)
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{
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if (path.empty()) return {};
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auto path_abs = to_absolute_impl(
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std::filesystem::u8path(path),
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base.empty() ? std::filesystem::current_path() : std::filesystem::u8path(base)
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);
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return path_abs.u8string();
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}
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std::wstring common_helpers::to_absolute(const std::wstring_view &path, const std::wstring_view &base)
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{
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if (path.empty()) return {};
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auto path_abs = to_absolute_impl(
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std::filesystem::path(path),
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base.empty() ? std::filesystem::current_path() : std::filesystem::path(base)
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);
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return path_abs.wstring();
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}
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bool common_helpers::file_exist(const std::filesystem::path &filepath)
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{
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if (std::filesystem::is_directory(filepath)) {
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return false;
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} else if (std::filesystem::exists(filepath)) {
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return true;
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}
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return false;
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}
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bool common_helpers::file_exist(const std::string &filepath)
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{
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if (filepath.empty()) return false;
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return file_exist(std::filesystem::u8path(filepath));
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}
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bool common_helpers::file_exist(const std::wstring &filepath)
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{
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if (filepath.empty()) return false;
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return file_exist(std::filesystem::path(filepath));
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}
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bool common_helpers::file_size(const std::filesystem::path &filepath, size_t &size)
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{
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if (common_helpers::file_exist(filepath)) {
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size = static_cast<size_t>(std::filesystem::file_size(filepath));
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return true;
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}
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return false;
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}
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bool common_helpers::file_size(const std::string &filepath, size_t &size)
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{
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return file_size(std::filesystem::u8path(filepath), size);
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}
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bool common_helpers::file_size(const std::wstring &filepath, size_t &size)
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{
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return file_size(std::filesystem::path(filepath), size);
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}
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bool common_helpers::dir_exist(const std::filesystem::path &dirpath)
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{
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if (std::filesystem::is_directory(dirpath)) {
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return true;
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}
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return false;
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}
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bool common_helpers::dir_exist(const std::string &dirpath)
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{
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if (dirpath.empty()) return false;
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return dir_exist(std::filesystem::u8path(dirpath));
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}
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bool common_helpers::dir_exist(const std::wstring &dirpath)
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{
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if (dirpath.empty()) return false;
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return dir_exist(std::filesystem::path(dirpath));
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}
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size_t common_helpers::rand_number(size_t max)
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{
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// https://en.cppreference.com/w/cpp/numeric/random/uniform_int_distribution
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std::random_device rd{}; // a seed source for the random number engine
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std::mt19937 gen(rd()); // mersenne_twister_engine seeded with rd()
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std::uniform_int_distribution<size_t> distrib(0, max);
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return distrib(gen);
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}
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std::string common_helpers::get_utc_time()
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{
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// https://en.cppreference.com/w/cpp/chrono/c/strftime
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std::time_t time = std::time({});
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std::tm utc_time{};
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bool is_ok{};
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#if defined(__GNUC__) || defined(POSIX)
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is_ok = !!gmtime_s(&time, &utc_time);
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#else
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is_ok = !gmtime_s(&utc_time, &time);
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#endif
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std::string time_str(4 +1 +2 +1 +2 +3 +2 +1 +2 +1 +2 +1, '\0');
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if (is_ok) {
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constexpr const static char fmt[] = "%Y/%m/%d - %H:%M:%S";
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size_t chars = std::strftime(&time_str[0], time_str.size(), fmt, &utc_time);
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time_str.resize(chars);
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}
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return time_str;
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}
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