Diff: SnBase64.cpp

Revision:

1:e392595b4b76

Child:

3:24c5f0f50bf1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SnBase64.cpp	Fri Jul 20 19:04:02 2012 +0000
@@ -0,0 +1,65 @@
+/*
+Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+ 
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+ 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+ 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "SnBase64.h"
+//Originaly from Rolf's iputil.c
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <string.h>
+/*
+uint32_t base64enc_len(const uint32_t slen) {
+  return (((slen-1)/3)+1)<<2;
+}
+*/
+/*
+uint32_t base64enc_len(const int8_t* str) {
+  //return (((strlen(str)-1)/3)+1)<<2;
+  return base64enc_len(strlen(str));
+}
+*/
+void base64enc(const char *input, uint32_t length, char *output) {
+  static const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+  uint32_t c, c1, c2, c3;
+  for(uint32_t i = 0, j = 0; i<length; i+=3u,j+=4u) {
+    c1 = ((((uint8_t)*((uint8_t*)&input[i]))));
+    c2 = (length>i+1)?((((uint8_t)*((uint8_t *)&input[i+1])))):0;
+    c3 = (length>i+2)?((((uint8_t)*((uint8_t *)&input[i+2])))):0;
+
+    c = ((c1 & 0xFC) >> 2);
+    output[j+0] = base64[c];
+    c = ((c1 & 0x03) << 4) | ((c2 & 0xF0) >> 4);
+    output[j+1] = base64[c];
+    c = ((c2 & 0x0F) << 2) | ((c3 & 0xC0) >> 6);
+    output[j+2] = (length>i+1)?base64[c]:'=';
+    c = (c3 & 0x3F);
+    output[j+3] = (length>i+2)?base64[c]:'=';
+  }
+  output[(((length-1)/3)+1)<<2] = '\0';
+  //output[base64enc_len(length)] = '\0';
+}
+
+#ifdef __cplusplus
+}
+#endif
\ No newline at end of file