camel/camel-mime-filter-bestenc.h

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  *  Copyright (C) 2000 Ximian Inc.
   4  *
   5  *  Authors: Michael Zucchi <notzed@ximian.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of version 2 of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  * Boston, MA 02110-1301, USA.
  20  */
  21
  22 #ifndef _CAMEL_MIME_FILTER_BESTENC_H
  23 #define _CAMEL_MIME_FILTER_BESTENC_H
  24
  25 #include <camel/camel-mime-filter.h>
  26 #include <camel/camel-mime-part.h>
  27 #include <camel/camel-charset-map.h>
  28
  29 #define CAMEL_MIME_FILTER_BESTENC(obj)         CAMEL_CHECK_CAST (obj, camel_mime_filter_bestenc_get_type (), CamelMimeFilterBestenc)
  30 #define CAMEL_MIME_FILTER_BESTENC_CLASS(klass) CAMEL_CHECK_CLASS_CAST (klass, camel_mime_filter_bestenc_get_type (), CamelMimeFilterBestencClass)
  31 #define CAMEL_IS_MIME_FILTER_BESTENC(obj)      CAMEL_CHECK_TYPE (obj, camel_mime_filter_bestenc_get_type ())
  32
  33 G_BEGIN_DECLS
  34
  35 typedef struct _CamelMimeFilterBestencClass CamelMimeFilterBestencClass;
  36
  37 typedef enum _CamelBestencRequired {
  38         CAMEL_BESTENC_GET_ENCODING = 1<<0,
  39         CAMEL_BESTENC_GET_CHARSET = 1<<1,
  40
  41         /* do we treat 'lf' as if it were crlf? */
  42         CAMEL_BESTENC_LF_IS_CRLF = 1<<8,
  43         /* do we not allow "From " to appear at the start of a line in any part? */
  44         CAMEL_BESTENC_NO_FROM = 1<<9,
  45 } CamelBestencRequired;
  46
  47 typedef enum _CamelBestencEncoding {
  48         CAMEL_BESTENC_7BIT,
  49         CAMEL_BESTENC_8BIT,
  50         CAMEL_BESTENC_BINARY,
  51
  52         /* is the content stream to be treated as text? */
  53         CAMEL_BESTENC_TEXT = 1<<8,
  54 } CamelBestencEncoding;
  55
  56 struct _CamelMimeFilterBestenc {
  57         CamelMimeFilter parent;
  58
  59         unsigned int flags;     /* our creation flags, see above */
  60
  61         unsigned int count0;    /* count of NUL characters */
  62         unsigned int count8;    /* count of 8 bit characters */
  63         unsigned int total;     /* total characters read */
  64
  65         unsigned int lastc;     /* the last character read */
  66         int crlfnoorder;        /* if crlf's occured where they shouldn't have */
  67
  68         int startofline;        /* are we at the start of a new line? */
  69
  70         int fromcount;
  71         char fromsave[6];       /* save a few characters if we found an \n near the end of the buffer */
  72         int hadfrom;            /* did we encounter a "\nFrom " in the data? */
  73
  74         unsigned int countline; /* current count of characters on a given line */
  75         unsigned int maxline;   /* max length of any line */
  76
  77         CamelCharset charset;   /* used to determine the best charset to use */
  78 };
  79
  80 struct _CamelMimeFilterBestencClass {
  81         CamelMimeFilterClass parent_class;
  82 };
  83
  84 CamelType               camel_mime_filter_bestenc_get_type      (void);
  85 CamelMimeFilterBestenc      *camel_mime_filter_bestenc_new      (unsigned int flags);
  86
  87
  88 CamelTransferEncoding   camel_mime_filter_bestenc_get_best_encoding(CamelMimeFilterBestenc *filter, CamelBestencEncoding required);
  89 const char *            camel_mime_filter_bestenc_get_best_charset(CamelMimeFilterBestenc *filter);
  90 void                    camel_mime_filter_bestenc_set_flags(CamelMimeFilterBestenc *filter, unsigned int flags);
  91
  92 G_END_DECLS
  93
  94 #endif /* ! _CAMEL_MIME_FILTER_BESTENC_H */