// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.

#ifndef tools_srep
#define tools_srep

#include <string>
#include <vector>

namespace tools {

inline bool replace(std::string& a_string,const std::string& a_old,const std::string& a_new){
  // return true : some replacement done.
  // return false : nothing replaced.
  if(a_old.empty()) return false;
  std::string snew;
  std::string::size_type lold = a_old.length();
  bool status = false;
  std::string stmp = a_string;
  while(true) {
    std::string::size_type pos = stmp.find(a_old);
    if(pos==std::string::npos){
      snew += stmp;
      break;
    } else {
      snew += stmp.substr(0,pos);
      snew += a_new;
      stmp = stmp.substr(pos+lold,stmp.length()-(pos+lold));
      status = true;
    }
  }
  a_string = snew;
  return status;
}

inline bool replace(std::vector<std::string>& a_strings,const std::string& a_old,const std::string& a_new){
  std::vector<std::string>::iterator it;
  for(it=a_strings.begin();it!=a_strings.end();++it) {
    if(!replace(*it,a_old,a_new)) return false;
  }
  return true;
}

}

#endif