diff options
Diffstat (limited to 'camel/camel-stream-b64.c')
-rw-r--r-- | camel/camel-stream-b64.c | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/camel/camel-stream-b64.c b/camel/camel-stream-b64.c deleted file mode 100644 index 3b97b11aad..0000000000 --- a/camel/camel-stream-b64.c +++ /dev/null @@ -1,331 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ - - -/* - * - * Author : - * Bertrand Guiheneuf <bertrand@helixcode.com> - * - * Copyright 1999, 2000 HelixCode (http://www.helixcode.com) . - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 - * USA - */ -#include <config.h> -#include "camel-stream-b64.h" - - - - -static CamelStreamClass *parent_class = NULL; - -static guchar char_to_six_bits [256] = { - 128, 128, 128, 128, 128, 128, 128, 128, /* 0 .. 7 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 8 .. 15 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 16 .. 23 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 24 .. 31 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 32 .. 39 */ - 128, 128, 128, 62, 128, 128, 128, 63, /* 40 .. 47 */ - 52, 53, 54, 55, 56, 57, 58, 59, /* 48 .. 55 */ - 60, 61, 128, 128, 128, 64, 128, 128, /* 56 .. 63 */ - 128, 0, 1, 2, 3, 4, 5, 6, /* 64 .. 71 */ - 7, 8, 9, 10, 11, 12, 13, 14, /* 72 .. 79 */ - 15, 16, 17, 18, 19, 20, 21, 22, /* 80 .. 87 */ - 23, 24, 25, 128, 128, 128, 128, 128, /* 88 .. 95 */ - 128, 26, 27, 28, 29, 30, 31, 32, /* 96 .. 103 */ - 33, 34, 35, 36, 37, 38, 39, 40, /* 104 .. 111 */ - 41, 42, 43, 44, 45, 46, 47, 48, /* 112 .. 119 */ - 49, 50, 51, 128, 128, 128, 128, 128, /* 120 .. 127 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 128 .. 135 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 136 .. 143 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 144 .. 151 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 152 .. 159 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 160 .. 167 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 168 .. 175 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 176 .. 183 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 184 .. 191 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 192 .. 199 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 200 .. 207 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 208 .. 215 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 216 .. 223 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 224 .. 231 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 232 .. 239 */ - 128, 128, 128, 128, 128, 128, 128, 128, /* 240 .. 247 */ - 128, 128, 128, 128, 128, 128, 128, 128 /* 248 .. 255 */ -}; - - -static gchar six_bits_to_char[65] = -"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; - -/* Returns the class for a CamelStreamB64 */ -#define CSB64_CLASS(so) CAMEL_STREAM_B64_CLASS (GTK_OBJECT(so)->klass) - -static void init_with_input_stream__static (CamelStreamB64 *stream_b64, - CamelStream *input_stream); - -static gint read__static (CamelStream *stream, - gchar *buffer, - gint n); - -static void reset__static (CamelStream *stream); - -static gint read_decode__static (CamelStream *stream, - gchar *buffer, - gint n); -static gboolean eos__static (CamelStream *stream); - -static void -camel_stream_b64_class_init (CamelStreamB64Class *camel_stream_b64_class) -{ - CamelStreamClass *camel_stream_class = CAMEL_STREAM_CLASS (camel_stream_b64_class); - - - parent_class = gtk_type_class (camel_stream_get_type ()); - - /* virtual method definition */ - camel_stream_b64_class->init_with_input_stream = init_with_input_stream__static; - - - /* virtual method overload */ - camel_stream_class->read = read__static; - camel_stream_class->eos = eos__static; - camel_stream_class->reset = reset__static; - - /* signal definition */ - -} - -GtkType -camel_stream_b64_get_type (void) -{ - static GtkType camel_stream_b64_type = 0; - - if (!camel_stream_b64_type) { - GtkTypeInfo camel_stream_b64_info = - { - "CamelStreamB64", - sizeof (CamelStreamB64), - sizeof (CamelStreamB64Class), - (GtkClassInitFunc) camel_stream_b64_class_init, - (GtkObjectInitFunc) NULL, - /* reserved_1 */ NULL, - /* reserved_2 */ NULL, - (GtkClassInitFunc) NULL, - }; - - camel_stream_b64_type = gtk_type_unique (camel_stream_get_type (), &camel_stream_b64_info); - } - - return camel_stream_b64_type; -} - - -static void -reemit_available_signal__static (CamelStream *parent_stream, gpointer user_data) -{ - gtk_signal_emit_by_name (GTK_OBJECT (user_data), "data_available"); -} - -static void -init_with_input_stream__static (CamelStreamB64 *stream_b64, - CamelStream *input_stream) -{ - g_assert (stream_b64); - g_assert (input_stream); - - - - /* by default, the stream is in decode mode */ - stream_b64->mode = CAMEL_STREAM_B64_DECODER; - - stream_b64->eos = FALSE; - stream_b64->decode_status.keep = 0; - stream_b64->decode_status.state = 0; - - - stream_b64->input_stream = input_stream; - - gtk_object_ref (GTK_OBJECT (input_stream)); - - /* - * connect to the parent stream "data_available" - * stream so that we can reemit the signal on the - * seekable substream in case some data would - * be available for us - */ - gtk_signal_connect (GTK_OBJECT (input_stream), - "data_available", - reemit_available_signal__static, - stream_b64); - - - /* bootstrapping signal */ - gtk_signal_emit_by_name (GTK_OBJECT (stream_b64), "data_available"); - - -} - - - -CamelStream * -camel_stream_b64_new_with_input_stream (CamelStream *input_stream) -{ - CamelStreamB64 *stream_b64; - - stream_b64 = gtk_type_new (camel_stream_b64_get_type ()); - CSB64_CLASS (stream_b64)->init_with_input_stream (stream_b64, input_stream); - - return CAMEL_STREAM (stream_b64); -} - - - - -void -camel_stream_b64_set_mode (CamelStreamB64 *stream_b64, - CamelStreamB64Mode mode) -{ - g_assert (stream_b64); - stream_b64->mode = mode; -} - - - - -static gint -read__static (CamelStream *stream, - gchar *buffer, - gint n) -{ - CamelStreamB64 *stream_b64 = CAMEL_STREAM_B64 (stream); - - g_assert (stream); - - - if (stream_b64->mode == CAMEL_STREAM_B64_DECODER) - return read_decode__static (stream, buffer, n); - - return 0; -} - - - -static gint read_decode__static (CamelStream *stream, - gchar *buffer, - gint n) -{ - CamelStreamB64 *stream_b64 = CAMEL_STREAM_B64 (stream); - CamelStream64DecodeStatus *status; - CamelStream *input_stream; - guchar six_bits_value; - gint nb_read_in_input; - guchar c; - gint j = 0; - - g_assert (stream); - input_stream = stream_b64->input_stream; - - g_assert (input_stream); - status = &(stream_b64->decode_status); - - - /* state = (CamelStream64DecodeState *) - ((gchar *)stream_b64 + G_STRUCT_OFFSET (CamelStreamB64, decode_state)) */ - - nb_read_in_input = camel_stream_read (input_stream, &c, 1); - - while ((nb_read_in_input >0 ) && (j<n)) { - - six_bits_value = char_to_six_bits[c]; - - /* if we encounter an '=' we can assume the end of the stream - has been found */ - if (six_bits_value == 64) { - stream_b64->eos = TRUE; - status->keep = 0; - - break; - } - - /* test if we must ignore the character */ - if (six_bits_value != 128) { - six_bits_value = six_bits_value & 0x3f; - - switch (status->state % 4){ - case 0: - status->keep = six_bits_value << 2; - - break; - case 1: - buffer [j++] = status->keep | (six_bits_value >> 4); - status->keep = (six_bits_value & 0xf) << 4; - break; - case 2: - buffer [j++] = status->keep | (six_bits_value >> 2); - status->keep = (six_bits_value & 0x3) << 6; - break; - case 3: - buffer [j++] = status->keep | six_bits_value; - status->keep = 0; - break; - } - - status->state = (status->state + 1) % 4; - - } - - if (j<n) nb_read_in_input = camel_stream_read (input_stream, &c, 1); - - } - - return j; - -} - - - - - - - -static gboolean -eos__static (CamelStream *stream) -{ - CamelStreamB64 *stream_b64 = CAMEL_STREAM_B64 (stream); - - g_assert (stream); - g_assert (stream_b64->input_stream); - - return (stream_b64->eos || camel_stream_eos (stream_b64->input_stream)); -} - - - - - -static void -reset__static (CamelStream *stream) -{ - CamelStreamB64 *stream_b64 = CAMEL_STREAM_B64 (stream); - - g_assert (stream); - g_assert (stream_b64->input_stream); - - stream_b64->decode_status.keep = 0; - stream_b64->decode_status.state = 0; - - camel_stream_reset (stream_b64->input_stream); -} |