group of functions to make easier work with char* based strings

char-string.h

#ifndef CHAR_STRING
#define CHAR_STRING
/* Sarverott 2020 */
class charString{
  public:
    static char* leftTrim(char* input, char trimmer=' '){
      int index=0;
      int cutFlag=0;
      bool cutting=false;
      char* output=new char();
      while(input[cutFlag]!='\0'){
        if(cutting){
          output[index]=input[cutFlag];
          index++;
        }else{
          if(input[cutFlag]!=trimmer){
            cutting=true;
            continue;
          }
        }
        cutFlag++;
      }
      output[index]='\0';
      return output;
    }
    static char* rightTrim(char* input, char trimmer=' '){
      int index=0;
      int cutFlag=0;
      char* output=new char();
      while(input[index]!='\0'){
        if(input[index]!=trimmer)cutFlag=index;
        index++;
      }
      for(int i=0;i<=cutFlag;i++) output[i]=input[i];
      output[cutFlag+1]='\0';
      return output;
    }
    static char* trim(char *input, char trimmer=' '){
      return charString::rightTrim(charString::leftTrim(input, trimmer), trimmer);
    }
    static char* copyCharString(char* input){
      char* output=new char();
      int index=0;
      while(input[index]!='\0') output[index++]=input[index];
      output[index]='\0';
      return output;
    }
    static char* concatCharStrings(char* firstInput, char* secondInput){
      char* output=new char();
      int mainIndex=0;
      int firstIndex=0;
      int secondIndex=0;
      while(firstInput[firstIndex]!='\0') output[mainIndex++]=firstInput[firstIndex++];
      while(secondInput[secondIndex]!='\0') output[mainIndex++]=secondInput[secondIndex++];
      output[mainIndex]='\0';
      return output;
    }
    static int calculateString(char* input){
      int output=0;
      while(input[output]!='\0')output++;
      return output;
    }
}
#endif