path: root/em-format/e-mail-formatter-quote-text-plain.c

/*
 * e-mail-formatter-quote-text-plain.c
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation.
 *
 * 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 Lesser General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 */

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

#include <glib/gi18n-lib.h>

#include <camel/camel.h>

#include <e-util/e-util.h>

#include "e-mail-formatter-quote.h"
#include "e-mail-part-utils.h"
#include "e-mail-stripsig-filter.h"

typedef EMailFormatterExtension EMailFormatterQuoteTextPlain;
typedef EMailFormatterExtensionClass EMailFormatterQuoteTextPlainClass;

GType e_mail_formatter_quote_text_plain_get_type (void);

G_DEFINE_TYPE (
    EMailFormatterQuoteTextPlain,
    e_mail_formatter_quote_text_plain,
    E_TYPE_MAIL_FORMATTER_QUOTE_EXTENSION)

static const gchar *formatter_mime_types[] = {
    "text/plain",
    NULL
};

static gboolean
emqfe_text_plain_format (EMailFormatterExtension *extension,
                         EMailFormatter *formatter,
                         EMailFormatterContext *context,
                         EMailPart *part,
                         GOutputStream *stream,
                         GCancellable *cancellable)
{
    GOutputStream *filtered_stream;
    GOutputStream *temp_stream;
    CamelMimeFilter *filter;
    CamelMimePart *mime_part;
    CamelContentType *type;
    EMailFormatterQuoteContext *qf_context;
    CamelMimeFilterToHTMLFlags text_flags;
    const gchar *format;
    guint32 rgb = 0x737373;

    mime_part = e_mail_part_ref_mime_part (part);
    if (mime_part == NULL)
        return FALSE;

    qf_context = (EMailFormatterQuoteContext *) context;

    text_flags =
        CAMEL_MIME_FILTER_TOHTML_PRE |
        CAMEL_MIME_FILTER_TOHTML_CONVERT_URLS |
        CAMEL_MIME_FILTER_TOHTML_CONVERT_ADDRESSES;

    /* XXX Should we define a separate EMailFormatter property
     *     for using CAMEL_MIME_FILTER_TOHTML_QUOTE_CITATION? */
    if (e_mail_formatter_get_mark_citations (formatter))
        text_flags |= CAMEL_MIME_FILTER_TOHTML_QUOTE_CITATION;

    /* Check for RFC 2646 flowed text. */
    type = camel_mime_part_get_content_type (mime_part);
    if (camel_content_type_is (type, "text", "plain")
        && (format = camel_content_type_param (type, "format"))
        && !g_ascii_strcasecmp (format, "flowed"))
        text_flags |= CAMEL_MIME_FILTER_TOHTML_FORMAT_FLOWED;

    filtered_stream = g_object_ref (stream);

    if ((qf_context->qf_flags & E_MAIL_FORMATTER_QUOTE_FLAG_KEEP_SIG) == 0) {
        filter = e_mail_stripsig_filter_new (TRUE);
        temp_stream = camel_filter_output_stream_new (
            filtered_stream, filter);
        g_filter_output_stream_set_close_base_stream (
            G_FILTER_OUTPUT_STREAM (temp_stream), FALSE);
        g_object_unref (filtered_stream);
        filtered_stream = temp_stream;
        g_object_unref (filter);
    }

    filter = camel_mime_filter_tohtml_new (text_flags, rgb);
    temp_stream = camel_filter_output_stream_new (filtered_stream, filter);
    g_filter_output_stream_set_close_base_stream (
        G_FILTER_OUTPUT_STREAM (temp_stream), FALSE);
    g_object_unref (filtered_stream);
    filtered_stream = temp_stream;
    g_object_unref (filter);

    e_mail_formatter_format_text (
        formatter, part, filtered_stream, cancellable);

    g_output_stream_flush (filtered_stream, cancellable, NULL);
    g_object_unref (filtered_stream);

    g_object_unref (mime_part);

    return TRUE;
}

static void
e_mail_formatter_quote_text_plain_class_init (EMailFormatterExtensionClass *class)
{
    class->display_name = _("Plain Text");
    class->description = _("Format part as plain text");
    class->mime_types = formatter_mime_types;
    class->priority = G_PRIORITY_HIGH;
    class->format = emqfe_text_plain_format;
}

static void
e_mail_formatter_quote_text_plain_init (EMailFormatterExtension *extension)
{
}