ADD file via upload

src/tool.cpp

@@ -0,0 +1,58 @@
+#include"tool.h"
+#include<sstream>
+#include<ctime>
+
+
+std::vector<std::string>tool::split(const std::string& str){
+  std::istringstream iss(str);
+  std::vector<std::string> tokens;
+  std::string token;
+  std::istringstream tokenStream(str);
+
+  while(std::getline(tokenStream,token,' ')){
+    tokens.push_back(token);
+  }
+
+  return tokens;
+}
+
+bool tool::isNumber(const std::string& str){
+  if(str.empty()){
+    return false;
+  }
+
+  int start = 0;
+  if(str[0] == '-'){
+    if(str.size() == 1){
+        return false;
+    }
+    start = 1;
+  }
+
+  for(int i = start;i < str.size();i++){
+    if(!isdigit(str[i])){
+        return false;
+    }
+  }
+
+  return true;
+}
+
+std::string tool::getCurrentTime(){
+  time_t now = time(0);
+  tm* ltm = localtime(&now);
+  char buffer[80];
+  strftime(buffer,80,"%Y-%m-%d-%H-%M-%S",ltm);
+  std::string nowTime = buffer;
+  return nowTime;
+}
+
+std::string tool::EreaseEmpty(const std::string& question){
+  int start = question.find_first_not_of("\t\n\r");
+  int end = question.find_last_not_of("\t\n\r");
+  if(start == std::string::npos||end == std::string::npos){
+    return "";
+  }
+  
+  return question.substr(start,end - start + 1);
+}