add Text::to_s() for testing

src/lib/include/jes/Text.h

@@ -3,6 +3,7 @@
 
 #include <stdint.h>
 #include "jes/Ref.h"
+#include <string>
 
 namespace jes
 {
@@ -16,13 +17,17 @@ namespace jes
 
         Character operator[](int index)
         {
-            return (Character)(m_buffer[index < m_insert_index ? index : index + m_gap_size]);
+            return (Character)(m_buffer[index < m_gap_index ? index : index + m_gap_size]);
         }
 
+        std::string to_s();
+
     protected:
+        void compact();
+
         uint8_t * m_buffer;
         size_t m_size;
-        size_t m_insert_index;
+        size_t m_gap_index;
         size_t m_gap_size;
     };
     typedef Ref<Text> TextRef;

src/lib/src/Text.cc

@@ -7,7 +7,7 @@ namespace jes
     {
         m_buffer = NULL;
         m_size = 0;
-        m_insert_index = 0;
+        m_gap_index = 0;
         m_gap_size = 0;
     }
 
@@ -15,8 +15,27 @@ namespace jes
     {
         m_buffer = new uint8_t[size];
         m_size = size;
-        m_insert_index = size;
+        m_gap_index = size;
         m_gap_size = 0;
         memcpy(m_buffer, &buf[0], size);
     }
+
+    std::string Text::to_s()
+    {
+        if (m_buffer == NULL)
+        {
+            return "";
+        }
+        compact();
+        return std::string((const char *)m_buffer, m_size - m_gap_size);
+    }
+
+    void Text::compact()
+    {
+        if ((m_gap_index < m_size - m_gap_size) && (m_gap_size > 0))
+        {
+            memmove(&m_buffer[m_gap_index], &m_buffer[m_gap_index + m_gap_size], m_size - m_gap_index);
+            m_gap_index = m_size - m_gap_size;
+        }
+    }
 }