MQLArticles/Utils/UView.mqh

//+------------------------------------------------------------------+
//|                                                        UView.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_UVIEW_MQH
#define MQLARTICLES_UTILS_UVIEW_MQH

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
namespace TSN
{
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
template <typename TOuner>
struct CStringView
 {
  TOuner*            m_ctx;
  int                m_len;
  int                m_start;


  //--- acceso
  __forceinline uchar operator[](const int pos) const;
  uchar               At(const int pos) const;
  __forceinline uchar Front() const;
  __forceinline uchar Back() const;

  //---
  string             Materialize(int dst_start = 0, int count = WHOLE_ARRAY) const;
  int                Materialize(uchar& out, int dst_start = 0, int count = WHOLE_ARRAY) const;

  //--- modificadores de ventana
  int                RemovePrefix(int n);
  int                RemoveSuffix(int n);

  //--- operaciones
  //- subtr
  string             SubtrStr(const int pos, const int num) const;
  CStringView        SubtrView(const int pos, const int num) const;

  //- compare
  int                Compare(const string& other) const;
  int                Compare(const CStringView& other) const;

  //- stats with
  __forceinline bool StartsWith(const uchar c) const;
  __forceinline bool EndsWith(const uchar c) const;

  //- apis basica pero conveirten..
  string             Lower() const;
  string             Upper() const;
  string             Trim() const;
  string             Replace(const string& find, const string& replacement) const;

  //- find
  int                Find(const uchar c, int pos = 0) const;
  int                FindWithSwar(const ulong mask, int pos = 0) const;
  int                FindWithMComp(const uchar c, int pos = 0) const;
  int                FindStr(const string& find, int pos = 0) const;

  //- reverse find
  int                RFind(const uchar c, int rend = -1) const;
  int                RFindWithMComp(const uchar c, int pos = -1) const;
  int                RFindWithSwar(const ulong mask, int pos = -1) const;
  int                RFindStr(const string& find, int pos = -1) const;

  //- exact pattern
  bool               ExactPattern(const int pos, const string& v);
  bool               ExactPattern(const int pos, const CStringView& v);


  //-- split
  int                Split(const uchar c, string& out[]);
 };
}
//+------------------------------------------------------------------+
#endif // MQLARTICLES_UTILS_UVIEW_MQH