79cda322e2
2000-01-17 bertrand <bertrand@helixcode.com> * camel/providers/mbox/camel-mbox-utils.c (camel_mbox_write_xev): (copy_file_chunk): (camel_mbox_xev_write_header_content): (camel_mbox_xev_parse_header_content): (string_to_flag): (flag_to_string): (string_to_uid): (uid_to_string): A bunch of new funcs to handle x-evolution private header field. Various others modifications and fixes. svn path=/trunk/; revision=1576
102 lines
2.1 KiB
C
102 lines
2.1 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
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/*
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* Base64 handlers
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*
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* Author:
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* Miguel de Icaza (miguel@kernel.org)
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*/
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#include <config.h>
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#include "gmime-base64.h"
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#define BSIZE 512
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/*
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* 64-based alphabet used by the the Base64 enconding
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*/
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static char *base64_alphabet =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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/**
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* gmime_encode_base64:
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* @input: The data source to be encoded in base64 format
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* @output: Where to put the encoded information in.
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*
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* This routine encodes the information pulled from @input using
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* base64 encoding and stores it on the @output CamelStream object
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*/
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void
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gmime_encode_base64 (CamelStream *input, CamelStream *output)
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{
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char buffer [BSIZE];
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char obuf [80]; /* Output is limited to 76 characters, rfc2045 */
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int n, i, j, state;
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int keep = 0;
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state = 0;
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j = 0;
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while ((n = camel_stream_read (input, buffer, sizeof (buffer))) > 0){
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for (i = 0; i < n; i++, state++){
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char c = buffer [i];
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switch (state % 3){
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case 0:
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obuf [j++] = base64_alphabet [c >> 2];
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keep = (c & 3) << 4;
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break;
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case 1:
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obuf [j++] = base64_alphabet [keep | (c >> 4)];
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keep = (c & 0xf) << 2;
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break;
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case 2:
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obuf [j++] = base64_alphabet [keep | (c >> 6)];
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obuf [j++] = base64_alphabet [c & 0x3f];
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break;
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}
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if (j == 72){
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obuf [j++] = '\r';
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obuf [j++] = '\n';
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camel_stream_write (output, obuf, j);
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j = 0;
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}
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}
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}
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switch (state % 3){
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case 0:
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/* full ouput, nothing left to do */
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break;
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case 1:
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obuf [j++] = base64_alphabet [keep];
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obuf [j++] = '=';
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obuf [j++] = '=';
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break;
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case 2:
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obuf [j++] = base64_alphabet [keep];
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obuf [j++] = '=';
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break;
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}
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camel_stream_write (output, obuf, j);
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camel_stream_flush (output);
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}
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/**
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* gmime_decode_base64:
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* @input: A buffer in base64 format.
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* @output: Destination where the decoded information is stored.
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*
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* This routine decodes the base64 information pulled from @input
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* and stores it on the @output CamelStream object.
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*/
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void
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gmime_decode_base64 (CamelStream *input, CamelStream *output)
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{
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}
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