Rahol Rajan / NetServices-Traffic

Used in Live Traffic Update Nokia LCD Display Project

Fork of NetServices by Segundo Equipo

services/http/util/base64.cpp@8:92b57208ab99, 2013-03-06 (annotated)

Committer:
rrajan8
Date:
Wed Mar 06 19:07:23 2013 +0000
Revision:
8:92b57208ab99
Parent:
0:ac1725ba162c
Child:
5:fa27dde97304
This project utilizes mbed's networking features to display live traffic updates on the Nokia LCD using the MapQuest API's Traffic Web Service.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
segundo 0:ac1725ba162c 1
segundo 0:ac1725ba162c 2 /*
segundo 0:ac1725ba162c 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
segundo 0:ac1725ba162c 4
segundo 0:ac1725ba162c 5 Permission is hereby granted, free of charge, to any person obtaining a copy
segundo 0:ac1725ba162c 6 of this software and associated documentation files (the "Software"), to deal
segundo 0:ac1725ba162c 7 in the Software without restriction, including without limitation the rights
segundo 0:ac1725ba162c 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
segundo 0:ac1725ba162c 9 copies of the Software, and to permit persons to whom the Software is
segundo 0:ac1725ba162c 10 furnished to do so, subject to the following conditions:
segundo 0:ac1725ba162c 11
segundo 0:ac1725ba162c 12 The above copyright notice and this permission notice shall be included in
segundo 0:ac1725ba162c 13 all copies or substantial portions of the Software.
segundo 0:ac1725ba162c 14
segundo 0:ac1725ba162c 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
segundo 0:ac1725ba162c 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
segundo 0:ac1725ba162c 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
segundo 0:ac1725ba162c 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
segundo 0:ac1725ba162c 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
segundo 0:ac1725ba162c 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
segundo 0:ac1725ba162c 21 THE SOFTWARE.
segundo 0:ac1725ba162c 22 */
segundo 0:ac1725ba162c 23
segundo 0:ac1725ba162c 24 #include "base64.h"
segundo 0:ac1725ba162c 25 //Originaly from Rolf's iputil.c
segundo 0:ac1725ba162c 26
segundo 0:ac1725ba162c 27 #ifdef __cplusplus
segundo 0:ac1725ba162c 28 extern "C" {
segundo 0:ac1725ba162c 29 #endif
segundo 0:ac1725ba162c 30
segundo 0:ac1725ba162c 31 #include <string.h>
segundo 0:ac1725ba162c 32
segundo 0:ac1725ba162c 33 unsigned int base64enc_len(const char *str) {
segundo 0:ac1725ba162c 34 return (((strlen(str)-1)/3)+1)<<2;
segundo 0:ac1725ba162c 35 }
segundo 0:ac1725ba162c 36
segundo 0:ac1725ba162c 37 void base64enc(const char *input, unsigned int length, char *output) {
segundo 0:ac1725ba162c 38 static const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
segundo 0:ac1725ba162c 39 unsigned int c, c1, c2, c3;
segundo 0:ac1725ba162c 40 for(unsigned int i = 0, j = 0; i<length; i+=3,j+=4) {
segundo 0:ac1725ba162c 41 c1 = ((((unsigned char)*((unsigned char *)&input[i]))));
segundo 0:ac1725ba162c 42 c2 = (length>i+1)?((((unsigned char)*((unsigned char *)&input[i+1])))):0;
segundo 0:ac1725ba162c 43 c3 = (length>i+2)?((((unsigned char)*((unsigned char *)&input[i+2])))):0;
segundo 0:ac1725ba162c 44
segundo 0:ac1725ba162c 45 c = ((c1 & 0xFC) >> 2);
segundo 0:ac1725ba162c 46 output[j+0] = base64[c];
segundo 0:ac1725ba162c 47 c = ((c1 & 0x03) << 4) | ((c2 & 0xF0) >> 4);
segundo 0:ac1725ba162c 48 output[j+1] = base64[c];
segundo 0:ac1725ba162c 49 c = ((c2 & 0x0F) << 2) | ((c3 & 0xC0) >> 6);
segundo 0:ac1725ba162c 50 output[j+2] = (length>i+1)?base64[c]:'=';
segundo 0:ac1725ba162c 51 c = (c3 & 0x3F);
segundo 0:ac1725ba162c 52 output[j+3] = (length>i+2)?base64[c]:'=';
segundo 0:ac1725ba162c 53 }
segundo 0:ac1725ba162c 54 output[(((length-1)/3)+1)<<2] = '\0';
segundo 0:ac1725ba162c 55 }
segundo 0:ac1725ba162c 56
segundo 0:ac1725ba162c 57 #ifdef __cplusplus
segundo 0:ac1725ba162c 58 }
segundo 0:ac1725ba162c 59 #endif
segundo 0:ac1725ba162c 60