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108 lines
2.5 KiB
C++
108 lines
2.5 KiB
C++
#pragma once
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#include <string>
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#include <iomanip>
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#include <iostream>
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#include <sstream>
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#include <algorithm>
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#include <cctype>
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#include <locale>
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-function"
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// https://stackoverflow.com/questions/216823/whats-the-best-way-to-trim-stdstring#217605
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// trim from start (in place)
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static inline void ltrim(std::string &s) {
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s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](int ch) {
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return !std::isspace(ch);
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}));
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}
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// trim from end (in place)
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static inline void rtrim(std::string &s) {
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s.erase(std::find_if(s.rbegin(), s.rend(), [](int ch) {
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return !std::isspace(ch);
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}).base(), s.end());
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}
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// trim from both ends (in place)
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static inline void trim(std::string &s) {
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ltrim(s);
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rtrim(s);
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}
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// trim from start (copying)
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static inline std::string ltrim_copy(std::string s) {
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ltrim(s);
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return s;
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}
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// trim from end (copying)
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static inline std::string rtrim_copy(std::string s) {
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rtrim(s);
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return s;
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}
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// trim from both ends (copying)
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static inline std::string trim_copy(std::string s) {
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trim(s);
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return s;
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}
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static bool starts_with(const std::string& s, const char *t) {
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return s.rfind(t, 0) == 0;
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}
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static bool ends_with(const std::string& s, const char *t, bool icase = false) {
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std::string s0(s);
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std::string s1(t);
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if (s0.size() < s1.size())
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return false;
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if (icase) {
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std::transform(s0.begin(), s0.end(), s0.begin(), ::tolower);
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std::transform(s1.begin(), s1.end(), s1.begin(), ::tolower);
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}
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size_t pos = s0.size() - s1.size();
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return (s0.rfind(s1, pos) == pos);
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}
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template<typename T>
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static std::string itox(T i) {
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std::stringstream ss;
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ss << "0x"
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<< std::setfill ('0') << std::setw(sizeof(T) * 2)
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<< std::hex << i;
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return ss.str();
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}
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static bool try_stoi(int& val, const std::string& str, std::size_t* pos = 0, int base = 10)
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{
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try {
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val = std::stoi(str, pos, base);
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return true;
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} catch (std::invalid_argument& e) {
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#ifndef NDEBUG
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std::cerr << __func__ << ": invalid argument: '" << str << "'" << std::endl;
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#endif
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}
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return false;
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}
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static bool try_stoull(unsigned long long& val, const std::string& str, std::size_t* pos = 0, int base = 10)
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{
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try {
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val = std::stoull(str, pos, base);
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return true;
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} catch (std::invalid_argument& e) {
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#ifndef NDEBUG
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std::cerr << __func__ << ": invalid argument: '" << str << "'" << std::endl;
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#endif
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}
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return false;
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}
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#pragma GCC diagnostic pop
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