evolution/mail/em-format-html-quote.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright 2003 Ximian, Inc. (www.ximian.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 Street #330, Boston, MA 02111-1307, USA.
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>

#include <camel/camel-stream.h>
#include <camel/camel-mime-filter-tohtml.h>
#include "em-format-html-quote.h"

struct _EMFormatHTMLQuotePrivate {
	char *credits;
};

static void efhq_format_clone (EMFormat *, CamelFolder *, const char *, CamelMimeMessage *, EMFormat *);
static void efhq_format_error (EMFormat *emf, CamelStream *stream, const char *txt);
static void efhq_format_message (EMFormat *, CamelStream *, CamelMedium *);
static void efhq_format_source (EMFormat *, CamelStream *, CamelMimePart *);
static void efhq_format_attachment (EMFormat *, CamelStream *, CamelMimePart *, const char *, const EMFormatHandler *);

static void efhq_builtin_init (EMFormatHTMLQuoteClass *efhc);

static EMFormatHTMLClass *efhq_parent;

static void
efhq_init (GObject *o)
{
	EMFormatHTMLQuote *efhq = (EMFormatHTMLQuote *) o;
	
	efhq->priv = g_malloc0 (sizeof (*efhq->priv));
	
	/* we want to convert url's etc */
	((EMFormatHTML *) efhq)->text_html_flags |= CAMEL_MIME_FILTER_TOHTML_CONVERT_URLS | CAMEL_MIME_FILTER_TOHTML_CONVERT_ADDRESSES;
	/* we want simple header format */
	((EMFormatHTML *) efhq)->simple_headers = TRUE;
}

static void
efhq_finalise (GObject *o)
{
	EMFormatHTMLQuote *efhq = (EMFormatHTMLQuote *) o;
	
	g_free (efhq->priv->credits);
	g_free (efhq->priv);
	
	((GObjectClass *) efhq_parent)->finalize (o);
}

static void
efhq_base_init(EMFormatHTMLQuoteClass *efhqklass)
{
	efhq_builtin_init(efhqklass);
}

static void
efhq_class_init (GObjectClass *klass)
{
	((EMFormatClass *) klass)->format_clone = efhq_format_clone;
	((EMFormatClass *) klass)->format_error = efhq_format_error;
	((EMFormatClass *) klass)->format_message = efhq_format_message;
	((EMFormatClass *) klass)->format_source = efhq_format_source;
	((EMFormatClass *) klass)->format_attachment = efhq_format_attachment;
	
	klass->finalize = efhq_finalise;
}

GType
em_format_html_quote_get_type (void)
{
	static GType type = 0;
	
	if (type == 0) {
		static const GTypeInfo info = {
			sizeof (EMFormatHTMLQuoteClass),
			(GBaseInitFunc)efhq_base_init, NULL,
			(GClassInitFunc)efhq_class_init,
			NULL, NULL,
			sizeof (EMFormatHTMLQuote), 0,
			(GInstanceInitFunc) efhq_init
		};
		
		efhq_parent = g_type_class_ref (em_format_html_get_type ());
		type = g_type_register_static (em_format_html_get_type (), "EMFormatHTMLQuote", &info, 0);
	}
	
	return type;
}

EMFormatHTMLQuote *
em_format_html_quote_new (void)
{
	return (EMFormatHTMLQuote *) g_object_new (em_format_html_quote_get_type (), NULL);
}

EMFormatHTMLQuote *
em_format_html_quote_new_with_credits (const char *credits)
{
	EMFormatHTMLQuote *emfq;
	
	emfq = (EMFormatHTMLQuote *) g_object_new (em_format_html_quote_get_type (), NULL);
	emfq->priv->credits = g_strdup (credits);
	
	return emfq;
}

static void
efhq_format_clone (EMFormat *emf, CamelFolder *folder, const char *uid, CamelMimeMessage *msg, EMFormat *src)
{
	((EMFormatClass *) efhq_parent)->format_clone (emf, folder, uid, msg, src);
}

static void
efhq_format_error (EMFormat *emf, CamelStream *stream, const char *txt)
{
	/* FIXME: should we even bother writign error text for quoting? probably not... */
	((EMFormatClass *) efhq_parent)->format_error (emf, stream, txt);
}

static void
efhq_format_message (EMFormat *emf, CamelStream *stream, CamelMedium *part)
{
	EMFormatHTMLQuote *emfq = (EMFormatHTMLQuote *) emf;
	
	camel_stream_printf (stream, "%s<!--+GtkHTML:<DATA class=\"ClueFlow\" key=\"orig\" value=\"1\">-->\n"
			     "<font color=\"#%06x\">\n"
			     "<blockquote type=cite>\n",
			     emfq->priv->credits ? emfq->priv->credits : "",
			     emfq->formathtml.citation_colour);

	if (!((EMFormatHTML *)emf)->hide_headers)
		em_format_html_format_headers((EMFormatHTML *)emf, stream, part);

	em_format_part(emf, stream, (CamelMimePart *)part);
	
	camel_stream_write_string (stream, "</blockquote></font><!--+GtkHTML:<DATA class=\"ClueFlow\" clear=\"orig\">-->");
}

static void
efhq_format_source (EMFormat *emf, CamelStream *stream, CamelMimePart *part)
{
	/* FIXME: should we just format_message? */
	((EMFormatClass *) efhq_parent)->format_source (emf, stream, part);
}

static void
efhq_format_attachment (EMFormat *emf, CamelStream *stream, CamelMimePart *part, const char *mime_type, const EMFormatHandler *handle)
{
	;
}

#include <camel/camel-medium.h>
#include <camel/camel-mime-part.h>
#include <camel/camel-multipart.h>
#include <camel/camel-url.h>

static void
efhq_multipart_related(EMFormat *emf, CamelStream *stream, CamelMimePart *part, const EMFormatHandler *info)
{
	CamelMultipart *mp = (CamelMultipart *)camel_medium_get_content_object((CamelMedium *)part);
	CamelMimePart *body_part, *display_part = NULL;
	CamelContentType *content_type;
	const char *location, *start;
	int i, nparts, partidlen, displayid = 0;
	CamelURL *base_save = NULL;

	if (!CAMEL_IS_MULTIPART(mp)) {
		em_format_format_source(emf, stream, part);
		return;
	}

	/* sigh, so much for oo code reuse ... */
	/* FIXME: put in a function */
	nparts = camel_multipart_get_number(mp);	
	content_type = camel_mime_part_get_content_type(part);
	start = camel_content_type_param (content_type, "start");
	if (start && strlen(start)>2) {
		int len;
		const char *cid;

		/* strip <>'s */
		len = strlen (start) - 2;
		start++;
		
		for (i=0; i<nparts; i++) {
			body_part = camel_multipart_get_part(mp, i);
			cid = camel_mime_part_get_content_id(body_part);
			
			if (cid && !strncmp(cid, start, len) && strlen(cid) == len) {
				display_part = body_part;
				displayid = i;
				break;
			}
		}
	} else {
		display_part = camel_multipart_get_part(mp, 0);
	}
	
	if (display_part == NULL) {
		em_format_part_as(emf, stream, part, "multipart/mixed");
		return;
	}
	
	/* stack of present location and pending uri's */
	location = camel_mime_part_get_content_location(part);
	if (location) {
		base_save = emf->base;
		emf->base = camel_url_new(location, NULL);
	}
	em_format_push_level(emf);

	partidlen = emf->part_id->len;
	g_string_append_printf(emf->part_id, "related.%d", displayid);
	em_format_part(emf, stream, display_part);
	g_string_truncate(emf->part_id, partidlen);

	em_format_pull_level(emf);
	
	if (location) {
		camel_url_free(emf->base);
		emf->base = base_save;
	}
}

static const char *type_remove_table[] = {
	"image/gif",
	"image/jpeg",
	"image/png",
	"image/x-png",
	"image/tiff",
	"image/x-bmp",
	"image/bmp",
	"image/x-cmu-raster",
	"image/x-portable-anymap",
	"image/x-portable-bitmap",
	"image/x-portable-graymap",
	"image/x-portable-pixmap",
	"image/x-xpixmap",
	"message/external-body",
	"multipart/appledouble",
	"multipart/signed",
	
	"image/jpg",
	"image/pjpeg",
};

static EMFormatHandler type_builtin_table[] = {
	{ "multipart/related", (EMFormatFunc)efhq_multipart_related },
};

static void
efhq_builtin_init (EMFormatHTMLQuoteClass *efhc)
{
	int i;
	
	for (i = 0; i < sizeof (type_remove_table) / sizeof (type_remove_table[0]); i++)
		em_format_class_remove_handler ((EMFormatClass *) efhc, type_remove_table[i]);

	for (i=0;i<sizeof(type_builtin_table)/sizeof(type_builtin_table[0]);i++)
		em_format_class_add_handler((EMFormatClass *)efhc, &type_builtin_table[i]);
}