172 lines
4.6 KiB
C++
172 lines
4.6 KiB
C++
//
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// Created by matrixai on 4/2/24.
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//
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#include "StringUtil.h"
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namespace ai_matrix
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{
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StringUtil *StringUtil::ins = nullptr;
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StringUtil::GarbageCollector StringUtil::gc;
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std::mutex StringUtil::mx;
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StringUtil *StringUtil::getins()
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{
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//双层锁，确保线程安全
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if (ins == nullptr)
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{
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std::lock_guard<std::mutex> guard(mx); //防止异常发生不能解锁
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if (ins == nullptr)
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{
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ins = new StringUtil();
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}
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}
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return ins;
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}
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/**
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* 字符串分割函数
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* @param str 目标字符串
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* @param pattern 切割字符
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* @return vector<std::string>
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*/
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std::vector<std::string> StringUtil::split(std::string str, std::string pattern)
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{
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std::string::size_type pos;
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std::vector<std::string> result;
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str += pattern; //扩展字符串以方便操作
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int size = str.size();
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for (int i = 0; i < size; i++)
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{
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pos = str.find(pattern, i);
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if (pos < size)
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{
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std::string s = str.substr(i, pos - i);
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result.push_back(s);
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i = pos + pattern.size() - 1;
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}
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}
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return result;
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}
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/**
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* 去掉字符串前后空格
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* @param str
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* @return
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*/
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std::string StringUtil::trim(const std::string& str) {
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std::string temp = str;
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temp.erase(0, temp.find_first_not_of(" \t\n\r\f\v")); // 去除开头的空格
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temp.erase(temp.find_last_not_of(" \t\n\r\f\v") + 1); // 去除末尾的空格
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return temp;
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}
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/**
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* 替换字符串中所有指定字符
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* @param str 目标字符串
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* @param old_value 原值
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* @param new_value 新值
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* @return 新结果
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*/
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std::string& StringUtil::replace_all_distinct(std::string &str, const std::string &old_value, const std::string &new_value)
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{
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for (std::string::size_type pos(0); pos != std::string::npos; pos += new_value.length()) {
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if ((pos = str.find(old_value, pos)) != std::string::npos)
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str.replace(pos, old_value.length(), new_value);
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else break;
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}
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return str;
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}
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/**
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* Anchor行分割
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* inParam : std::string &strLine Anchor一行内容
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* : const std::set<char> &setDelimiters 分割符集合
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* outParam: N/A
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* return : 分割数据
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*/
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std::vector<float> StringUtil::SplitAnchor(std::string &strLine, const std::set<char> &setDelimiters)
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{
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std::vector<float> result;
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if (strLine.empty())
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{
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return result;
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}
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char const *pch = strLine.c_str();
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char const *start = pch;
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for (; *pch; ++pch)
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{
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if (setDelimiters.find(*pch) != setDelimiters.end())
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{
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if (start != pch)
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{
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std::string tmp(start, pch);
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result.push_back(atof(tmp.c_str())); //浮点数
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}
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start = pch + 1;
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}
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}
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result.push_back(atof(start)); //最后一个内容
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return result;
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}
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/**
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* float 转 string
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* @param f
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* @return
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*/
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std::string StringUtil::getStringFromFloat(float f)
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{
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std::ostringstream buffer;
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buffer << f;
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return buffer.str();
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}
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/**
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* bool 转 string
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* @param b
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* @return
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*/
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std::string StringUtil::getStringFromBool(bool b)
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{
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std::ostringstream buffer;
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buffer << b;
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return buffer.str();
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}
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/**
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* string 转 int
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* (会过滤字符串前后的空格)
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* @param s
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* @param b
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* @return
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*/
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int StringUtil::string2int(const std::string s, bool &b) {
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try {
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b = true;
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return std::stoi(this->trim(s));
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} catch (...) {
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b = false;
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return 0;
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}
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}
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/**
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* 判断字符串中是否存在 字母和数字 之外的字符
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* @param str
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* @return
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*/
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bool StringUtil::containsNonAlphaNum(const std::string &str) {
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for (char c : str) {
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if (!std::isalnum(c) && !std::isspace(c)) { // 如果不是字母或数字
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return true; // 返回true，表示存在非字母数字字符
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}
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}
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return false; // 遍历完成未发现非字母数字字符，返回false
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}
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bool StringUtil::is_digits(const std::string &str) {
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return all_of(str.begin(), str.end(), ::isdigit);
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}
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}
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