MQLArticles/Utils/FA/String/String.mqh

//+------------------------------------------------------------------+
//|                                                       String.mqh |
//|                                   Copyright 2026, Niquel Mendoza |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2026, Niquel Mendoza"
#property link      "https://www.mql5.com"
#property strict

#ifndef MQLARTICLES_UTILS_FA_STRING_STRING_MQH
#define MQLARTICLES_UTILS_FA_STRING_STRING_MQH

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
namespace TSN
{
//+------------------------------------------------------------------+
//| Macros                                                           |
//+------------------------------------------------------------------+
#define StringSubstrRange(s, ps, pe) s.Substr(ps,((pe)-(ps))+1)

//---
#define StringTrim(text) \
 StringTrimRight(text);  \
 StringTrimLeft(text);


//+------------------------------------------------------------------+
//| Funcinoes extra de string                                        |
//+------------------------------------------------------------------+
class CStringFunc
 {
public:
                     CStringFunc(void) {}
                    ~CStringFunc(void) {}


  //--- Find
  static __forceinline int FindCh(const string &str, const uchar c, int l, int r = 0);

  //--- RFind
  static __forceinline int RFindCh(const string &str, const uchar c, int r);


  //---
  template <typename TValue, typename TConvert>
  static ulong        ToVector(const string& str, vector<TValue>& vec, ushort sep)
   {
    //---
    int pos = 0;
    const int len = StringLen(str);
    //TConvert::s_len = len;
    //---
    ulong r = vec.Size();
    //---
    ulong w = 0;
    //--
    while(pos < len)
     {
      //---
      const ushort c =  str[pos];
      if(c < 33 || c == sep)
       {
        pos++;
        continue;
       }

      //---
      if(w >= r)
       {
        r = (r << 1) + 8;
        vec.Resize(r);
       }

      //---
      // CAracter real
      // la idea es que convert haga su trabajo y pare hasta donde considere que debe
      // luego nos deja.. y segimos nosotrs..
      TConvert::ToValue(str, pos, vec[w++], len);
     }
    //---
    return w;
   }

  //---
  template <typename TValue, typename TConvert>
  static int         ToArr(const string& str, TValue& arr[], ushort sep)
   {
    //---
    int pos = 0;
    const int len = StringLen(str);
    //TConvert::s_len = len;
    //---
    int r = ArraySize(arr);
    //---
    int w = 0;
    //--
    while(pos < len)
     {
      //---
      const ushort c =  str[pos];
      if(c < 33 || c == sep)
       {
        pos++;
        continue;
       }

      //---
      if(w >= r)
       {
        r = (r << 1) + 8;
        ArrayResize(arr, r);
       }

      //---
      // CAracter real
      // la idea es que convert haga su trabajo y pare hasta donde considere que debe
      // luego nos deja.. y segimos nosotrs..
      TConvert::ToValue(str, pos, arr[w++], len);
     }
    //---
    return w;
   }

  //---  Split complejo (por "")
  static int                StringSplitStr(const string& str, const string& sep, string& arr[], int reserve);
 };


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
static int CStringFunc::StringSplitStr(const string &str, const string &sep, string &arr[], int reserve)
 {
//---
  if(str == NULL)
    return -1; // Vacio

//---
  int last_start = 0;
  const int len_str = int(str.Length());
  const int len_sep = int(sep.Length());
  int s = 0;
  int r = ArrayResize(arr, reserve);

// 1||N||0||1||sAdasdasdasd"
//---
  while(true)
   {
    int init;
    if((init = str.Find(sep, last_start)) >= 0)
     {
      //---
      if(s >= r)
       {
        r <<= 1;
        ArrayResize(arr, r);
       }


      //---
      arr[s++] =  StringSubstrRange(str, last_start, init - 1);
      last_start = init + len_sep;
     }
    else
     {
      // resize fijo desde ultima pos hasta todo..
      arr[ArrayResize(arr, (++r)) - 1] = str.Substr(last_start, len_str);
      return r;
     }
   }
 }

//+------------------------------------------------------------------+
//| Find                                                             |
//+------------------------------------------------------------------+
static __forceinline int CStringFunc::FindCh(const string &str, const uchar c, int l, int r = 0)
 {
  l += r;
  for(; r < l; r++)
    if(str[r] == c)
      return r; // posicion absoluta
  return -1;
 }

//+------------------------------------------------------------------+
//| RFind                                                            |
//+------------------------------------------------------------------+
static __forceinline int CStringFunc::RFindCh(const string &str, const uchar c, int r)
 {
  for(; r >= 0; r--)
    if(str[r] == c)
      return r; // posicion absoluta
  return -1;
 }
}



#endif // MQLARTICLES_UTILS_FA_STRING_STRING_MQH