Diff: http/server/base64.cpp

Revision:

0:400d8e75a8d0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/http/server/base64.cpp	Sun Sep 06 15:19:36 2015 +0000
@@ -0,0 +1,75 @@
+//*****************************************************************************
+// Copyright (C) 2014 Texas Instruments Incorporated
+//
+// All rights reserved. Property of Texas Instruments Incorporated.
+// Restricted rights to use, duplicate or disclose this code are
+// granted through contract.
+// The program may not be used without the written permission of
+// Texas Instruments Incorporated or against the terms and conditions
+// stipulated in the agreement under which this program has been supplied,
+// and under no circumstances can it be used with non-TI connectivity device.
+//
+//*****************************************************************************
+
+/**
+ * @defgroup base64_api
+ *
+ * @{
+ */
+#include "base64.h"
+
+static const char g_ccB64Tbl[65] =
+   "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+
+void ConvertToBase64(char *pcOutStr, const char *pccInStr, int iLen)
+{
+    const char* pccIn = (const char *)pccInStr;
+    char* pcOut;
+    int iCount;
+    pcOut = pcOutStr;
+
+    //Loop in for Multiple of 24Bits and Convert to Base 64    
+    for (iCount = 0; iLen - iCount >=3 ; iCount += 3,pccIn += 3)
+    {       
+        *pcOut++ = g_ccB64Tbl[pccIn[0] >> 2];
+        *pcOut++ = g_ccB64Tbl[((pccIn[0] & 0x03)<<4) | (pccIn[1] >> 4)];
+        *pcOut++ = g_ccB64Tbl[((pccIn[1] & 0x0F)<<2) | (pccIn[2] >> 6)];
+        *pcOut++ = g_ccB64Tbl[pccIn[2] & 0x3f];
+		
+    }
+	
+    //Check if String is not multiple of 3 Bytes
+    if (iCount != iLen)
+    {
+        
+        unsigned char ucLastByte;
+
+        *pcOut++ = g_ccB64Tbl[pccIn[0] >> 2];
+        ucLastByte = ((pccIn[0] & 0x03)<<4);
+        
+      
+        if (iLen - iCount > 1)
+        {
+            //If there are 2 Extra Bytes
+            ucLastByte |= (pccIn[1] >> 4);
+            *pcOut++ = g_ccB64Tbl[ucLastByte];
+            *pcOut++ = g_ccB64Tbl[((pccIn[1] & 0x0F)<<2)];
+        }
+        else
+        {
+             //If there is only 1 Extra Byte
+             *pcOut++ = g_ccB64Tbl[ucLastByte];
+             *pcOut++ = '=';
+        }            
+                                
+         *pcOut++ = '=';            
+    }
+	
+    *pcOut  = '\0';
+	
+}
+
+/// @}
+
+