Diff: Dropbox/base64.cpp

Revision:

0:3e7d6f496a67

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Dropbox/base64.cpp	Sun Apr 17 21:30:10 2011 +0000
@@ -0,0 +1,59 @@
+
+ /*
+ 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 "base64.h"
+ //Originaly from Rolf's iputil.c
+ 
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
+ 
+ #include <string.h>
+ 
+ unsigned int base64enc_len(const char *str) {
+   return (((strlen(str)-1)/3)+1)<<2;
+ }
+ 
+ void base64enc(const char *input, unsigned int length, char *output) {
+   static const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+   unsigned int c, c1, c2, c3;
+   for(unsigned int i = 0, j = 0; i<length; i+=3,j+=4) {
+     c1 = ((((unsigned char)*((unsigned char *)&input[i]))));
+     c2 = (length>i+1)?((((unsigned char)*((unsigned char *)&input[i+1])))):0;
+     c3 = (length>i+2)?((((unsigned char)*((unsigned char *)&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';
+ }
+ 
+ #ifdef __cplusplus
+ }
+ #endif
\ No newline at end of file