reverting version

include/Module/EditLine.h

@@ -0,0 +1,68 @@
+#pragma once
+
+#include "Module/CharBuffer.h"
+
+class EditLine : public CharBuffer {
+   public:
+    EditLine(size_t size) : CharBuffer(size){};
+
+    char &operator[](size_t i) { return _pool[i]; }
+
+    char operator[](size_t i) const { return _pool[i]; }
+
+    EditLine &operator=(const EditLine &src) {
+        delete[] _pool;
+        _pool = new char[src._capacity];
+        memcpy(_pool, src._pool, src._capacity);
+        _read = src._read;
+        _write = src._write;
+        return *this;
+    }
+
+    void del() {
+        size_t i;
+        for (i = _write; i < _capacity; ++i)
+            _pool[i] = _pool[i + 1];
+        _pool[i] = '\x00';
+    }
+
+    bool backspace() {
+        bool res = false;
+        if (prev()) {
+            del();
+            res = true;
+        }
+        return res;
+    }
+
+    bool next() {
+        bool res = false;
+        if (_write < _capacity - 1) {
+            _write++;
+            res = true;
+        }
+        return res;
+    }
+
+    bool prev() {
+        bool res = false;
+        if (_write > 0) {
+            _write--;
+            res = true;
+        }
+        return res;
+    }
+
+    size_t home() {
+        size_t res = _write;
+        _write = 0;
+        return res;
+    }
+
+    size_t end() {
+        size_t n;
+        for (n = 0; n < _capacity - 1; ++n)
+            if (_pool[n] == '\x00') break;
+        return n;
+    }
+};