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

/*
 * e-mail-formatter-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 <e-util/e-util.h>

#include "e-mail-formatter-extension.h"
#include "e-mail-inline-filter.h"
#include "e-mail-part-utils.h"

typedef EMailFormatterExtension EMailFormatterTextPlain;
typedef EMailFormatterExtensionClass EMailFormatterTextPlainClass;

GType e_mail_formatter_text_plain_get_type (void);

G_DEFINE_TYPE (
    EMailFormatterTextPlain,
    e_mail_formatter_text_plain,
    E_TYPE_MAIL_FORMATTER_EXTENSION)

static const gchar *formatter_mime_types[] = {
    "text/plain",
    "text/*",
    "message/*",
    "application/vnd.evolution.plaintext",
    NULL
};

static gboolean
emfe_text_plain_format (EMailFormatterExtension *extension,
                        EMailFormatter *formatter,
                        EMailFormatterContext *context,
                        EMailPart *part,
                        GOutputStream *stream,
                        GCancellable *cancellable)
{
    GOutputStream *filtered_stream;
    CamelMimeFilter *filter;
    const gchar *format;
    const gchar *string;
    guint32 rgb;

    if (g_cancellable_is_cancelled (cancellable))
        return FALSE;

    if ((context->mode == E_MAIL_FORMATTER_MODE_RAW) ||
        (context->mode == E_MAIL_FORMATTER_MODE_PRINTING)) {
        CamelMimeFilterToHTMLFlags flags;
        CamelMimePart *mime_part;
        CamelDataWrapper *dw;

        if (context->mode == E_MAIL_FORMATTER_MODE_RAW) {
            string = e_mail_formatter_get_sub_html_header (formatter);

            g_output_stream_write_all (
                stream, string, strlen (string),
                NULL, cancellable, NULL);

            /* No need for body margins within <iframe> */
            string = "<style>body{ margin: 0; }</style>";

            g_output_stream_write_all (
                stream, string, strlen (string),
                NULL, cancellable, NULL);
        }

        flags = e_mail_formatter_get_text_format_flags (formatter);

        mime_part = e_mail_part_ref_mime_part (part);
        dw = camel_medium_get_content (CAMEL_MEDIUM (mime_part));
        if (dw == NULL) {
            g_object_unref (mime_part);
            return FALSE;
        }

        /* Check for RFC 2646 flowed text. */
        if (camel_content_type_is (dw->mime_type, "text", "plain")
        && (format = camel_content_type_param (dw->mime_type, "format"))
        && !g_ascii_strcasecmp (format, "flowed"))
            flags |= CAMEL_MIME_FILTER_TOHTML_FORMAT_FLOWED;

        rgb = e_rgba_to_value (
            e_mail_formatter_get_color (
                formatter, E_MAIL_FORMATTER_COLOR_CITATION));

        filter = camel_mime_filter_tohtml_new (flags, rgb);
        filtered_stream =
            camel_filter_output_stream_new (stream, filter);
        g_filter_output_stream_set_close_base_stream (
            G_FILTER_OUTPUT_STREAM (filtered_stream), FALSE);
        g_object_unref (filter);

        string =
            "<div class=\"part-container pre "
            "-e-web-view-background-color -e-web-view-text-color\" "
            "style=\"border: none; padding: 8px; margin: 0;\">";

        g_output_stream_write_all (
            stream, string, strlen (string),
            NULL, cancellable, NULL);

        e_mail_formatter_format_text (
            formatter, part, filtered_stream, cancellable);
        g_output_stream_flush (filtered_stream, cancellable, NULL);

        g_object_unref (filtered_stream);

        string = "</div>\n";

        g_output_stream_write_all (
            stream, string, strlen (string),
            NULL, cancellable, NULL);

        if (context->mode == E_MAIL_FORMATTER_MODE_RAW) {
            string = "</body></html>";

            g_output_stream_write_all (
                stream, string, strlen (string),
                NULL, cancellable, NULL);
        }

        g_object_unref (mime_part);

        return TRUE;

    } else {
        CamelFolder *folder;
        const gchar *message_uid;
        gchar *uri, *str;
        const gchar *default_charset, *charset;

        folder = e_mail_part_list_get_folder (context->part_list);
        message_uid = e_mail_part_list_get_message_uid (context->part_list);
        default_charset = e_mail_formatter_get_default_charset (formatter);
        charset = e_mail_formatter_get_charset (formatter);

        if (!default_charset)
            default_charset = "";
        if (!charset)
            charset = "";

        uri = e_mail_part_build_uri (
            folder, message_uid,
            "part_id", G_TYPE_STRING, e_mail_part_get_id (part),
            "mode", G_TYPE_INT, E_MAIL_FORMATTER_MODE_RAW,
            "formatter_default_charset", G_TYPE_STRING, default_charset,
            "formatter_charset", G_TYPE_STRING, charset,
            NULL);

        str = g_strdup_printf (
            "<div class=\"part-container-nostyle\" >"
            "<iframe width=\"100%%\" height=\"10\""
            " id=\"%s.iframe\" name=\"%s\" "
            " frameborder=\"0\" src=\"%s\" "
            " class=\"-e-mail-formatter-frame-color"
            " -e-web-view-text-color\" "
            " style=\"border: 1px solid;\">"
            "</iframe>"
            "</div>",
            e_mail_part_get_id (part),
            e_mail_part_get_id (part),
            uri);

        g_output_stream_write_all (
            stream, str, strlen (str),
            NULL, cancellable, NULL);

        g_free (str);
        g_free (uri);
    }

    return TRUE;
}

static void
e_mail_formatter_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_LOW;
    class->format = emfe_text_plain_format;
}

static void
e_mail_formatter_text_plain_init (EMailFormatterExtension *extension)
{
}