From 5fe41eca99adf4bf0fb5832033a96f98b530d4f1 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Thu, 9 Aug 2018 22:19:28 +0800
Subject: *update

---
 src/lua/net/luaopen_Buffer.cpp | 191 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 191 insertions(+)
 create mode 100644 src/lua/net/luaopen_Buffer.cpp

(limited to 'src/lua/net/luaopen_Buffer.cpp')

diff --git a/src/lua/net/luaopen_Buffer.cpp b/src/lua/net/luaopen_Buffer.cpp
new file mode 100644
index 0000000..6e10f25
--- /dev/null
+++ b/src/lua/net/luaopen_Buffer.cpp
@@ -0,0 +1,191 @@
+#include "lua/luax.h"
+#include "../luaopen_types.h"
+#include "libjin/jin.h"
+
+namespace jin
+{
+namespace lua
+{
+namespace net
+{
+
+    class Buffer
+    {
+    public:
+        Buffer(size_t size);
+        Buffer(const char* data, size_t size);
+        ~Buffer()
+        {
+        }
+
+        void append(char* data, size_t size)
+        {
+
+        }
+
+        const char* grabString(int offset = 0)
+        {
+            int l = offset;
+            for (; l < size; ++l)
+            {
+                if (buffer[l] == 0)
+                {
+
+                }
+            }
+            return nullptr;
+        }
+
+        int grabInteger(int offset = 0)
+        {
+
+        }
+
+        float grabfloat(int offset = 0)
+        {
+
+        }
+
+        bool grabboolean(int offset = 0)
+        {
+
+        }
+
+    private:
+        char* buffer;
+        size_t size;
+
+    };
+
+    static int l_buffer(lua_State* L)
+    {
+        int size = luax_checkinteger(L, 1);
+        char* buffer = (char*)malloc(size);
+        memset(buffer, 0, size);
+        luax_pushlstring(L, buffer, size);
+        return 1;
+    }
+
+    // return buffer, size
+    static int l_write(lua_State* L)
+    {
+        const char* data = luax_checklstring(L, 1, NULL);
+        int len = luax_checkinteger(L, 2);
+        if (luax_isinteger(L, 3))
+        {
+            int n = luax_checkinteger(L, 3);
+            int size = len + sizeof(n);
+            char* buffer = (char*)malloc(size);
+            memcpy(buffer, data, len);
+            memcpy(buffer + len, &n, sizeof(n));
+            //free((void*)data);
+            luax_pushlstring(L, buffer, size);
+            luax_pushinteger(L, size);
+            return 2;
+        }
+        else if (luax_isfloat(L, 3))
+        {
+            float n = luax_checknumber(L, 3);
+            int size = len + sizeof(n);
+            char* buffer = (char*)malloc(size);
+            memcpy(buffer, data, len);
+            memcpy(buffer + len, &n, sizeof(n));
+            //free((void*)data);
+            luax_pushlstring(L, buffer, size);
+            luax_pushinteger(L, size);
+            return 2;
+        }
+        else if (luax_isboolean(L, 3))
+        {
+            bool b = luax_checkbool(L, 3);
+            int size = len + sizeof(b);
+            char* buffer = (char*)malloc(size);
+            memcpy(buffer, data, len);
+            memcpy(buffer + len, &b, sizeof(b));
+            //free((void*)data);
+            luax_pushlstring(L, buffer, size);
+            luax_pushinteger(L, size);
+            return 2;
+        }
+        else if (luax_isstring(L, 3))
+        {
+            const char* s = luax_checkstring(L, 3);
+            int l = strlen(s) + 1; // with \0
+            int size = len + l;
+            char* buffer = (char*)malloc(size);
+            memcpy(buffer, data, len);
+            memcpy(buffer + len, s, l);
+            luax_pushlstring(L, buffer, size);
+            luax_pushinteger(L, size);
+            return 2;
+        }
+        else
+        {
+            luax_typerror(L, 3, "number, bool or string");
+            return 0;
+        }
+    }
+
+    // jin.shift(buffer, shift)
+    static int l_shift(lua_State* L)
+    {
+        const char* buffer = luax_checklstring(L, 1, NULL);
+        int size = luax_checkinteger(L, 2);
+        int shift = luax_checkinteger(L, 3);
+        int ss = size - shift;
+        luax_pushlstring(L, buffer + shift, ss);
+        luax_pushinteger(L, ss);
+        return 2;
+    }
+
+    // jin.bit.grabstring(buffer, size)
+    static int l_grabstring(lua_State* L)
+    {
+        const char* buffer = luax_checklstring(L, 1, NULL);
+        int size = luax_checkinteger(L, 2);
+        int l = 0;
+        for (; l < size; ++l)
+        {
+            if (buffer[l] == 0)
+            {
+                int len = l + 1;
+                char* str = (char*)malloc(len);
+                memcpy(str, buffer, len);
+                luax_pushstring(L, str);
+                luax_pushinteger(L, l);
+                return 2;
+            }
+        }
+        return 0;
+    }
+
+    static int l_grabinteger(lua_State* L)
+    {
+        const char* buffer = luax_checklstring(L, 1, NULL);
+        int size = luax_checkinteger(L, 2);
+        int n = *((int*)buffer);
+        luax_pushinteger(L, n);
+        return 1;
+    }
+
+    static int l_grabfloat(lua_State* L)
+    {
+        const char* buffer = luax_checklstring(L, 1, NULL);
+        int size = luax_checkinteger(L, 2);
+        float n = *((float*)buffer);
+        luax_pushnumber(L, n);
+        return 1;
+    }
+
+    static int l_grabboolean(lua_State* L)
+    {
+        const char* buffer = luax_checklstring(L, 1, NULL);
+        int size = luax_checkinteger(L, 2);
+        bool n = *((bool*)buffer);
+        luax_pushboolean(L, n);
+        return 1;
+    }
+
+} // net
+} // lua
+} // jin
\ No newline at end of file
-- 
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