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/*
 * evolution-source.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; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the 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"

typedef EMailFormatterExtension EMailFormatterSource;
typedef EMailFormatterExtensionClass EMailFormatterSourceClass;

GType e_mail_formatter_source_get_type (void);

G_DEFINE_TYPE (
    EMailFormatterSource,
    e_mail_formatter_source,
    E_TYPE_MAIL_FORMATTER_EXTENSION)

static const gchar *formatter_mime_types[] = {
    "application/vnd.evolution.source",
    NULL
};

static gboolean
emfe_source_format (EMailFormatterExtension *extension,
                    EMailFormatter *formatter,
                    EMailFormatterContext *context,
                    EMailPart *part,
                    CamelStream *stream,
                    GCancellable *cancellable)
{
    GString *buffer;
    CamelStream *filtered_stream;
    CamelMimeFilter *filter;
    CamelDataWrapper *dw = (CamelDataWrapper *) part->part;

    filtered_stream = camel_stream_filter_new (stream);

    filter = camel_mime_filter_tohtml_new (
        CAMEL_MIME_FILTER_TOHTML_CONVERT_NL |
        CAMEL_MIME_FILTER_TOHTML_CONVERT_SPACES |
        CAMEL_MIME_FILTER_TOHTML_PRESERVE_8BIT, 0);
    camel_stream_filter_add (
        CAMEL_STREAM_FILTER (filtered_stream), filter);
    g_object_unref (filter);

    buffer = g_string_new ("");

    if (CAMEL_IS_MIME_MESSAGE (part->part)) {
        g_string_append_printf (
            buffer,
            "<div class=\"part-container\" "
            "style=\"border: 0; background: #%06x; color: #%06x;\" >",
            e_rgba_to_value (
                e_mail_formatter_get_color (
                    formatter, E_MAIL_FORMATTER_COLOR_BODY)),
            e_rgba_to_value (
                e_mail_formatter_get_color (
                    formatter, E_MAIL_FORMATTER_COLOR_TEXT)));
    } else {
        g_string_append_printf (
            buffer,
            "<div class=\"part-container\" "
            "style=\"border-color: #%06x; background: #%06x; color: #%06x;\">"
            "<div class=\"part-container-inner-margin pre\">\n",
            e_rgba_to_value (
                e_mail_formatter_get_color (
                    formatter, E_MAIL_FORMATTER_COLOR_FRAME)),
            e_rgba_to_value (
                e_mail_formatter_get_color (
                    formatter, E_MAIL_FORMATTER_COLOR_BODY)),
            e_rgba_to_value (
                e_mail_formatter_get_color (
                    formatter, E_MAIL_FORMATTER_COLOR_TEXT)));
    }

    camel_stream_write_string (
        stream, buffer->str, cancellable, NULL);
    camel_stream_write_string (
        stream, "<code class=\"pre\">", cancellable, NULL);

    camel_data_wrapper_write_to_stream_sync (
        dw, filtered_stream,
        cancellable, NULL);
    camel_stream_flush (filtered_stream, cancellable, NULL);
    g_object_unref (filtered_stream);

    camel_stream_write_string (
        stream, "</code>", cancellable, NULL);

    g_string_free (buffer, TRUE);

    if (CAMEL_IS_MIME_MESSAGE (part->part)) {
        camel_stream_write_string (stream, "</div>", cancellable, NULL);
    } else {
        camel_stream_write_string (stream, "</div></div>", cancellable, NULL);
    }

    return TRUE;
}

static void
e_mail_formatter_source_class_init (EMailFormatterExtensionClass *class)
{
    class->display_name = _("Source");
    class->description = _("Display source of a MIME part");
    class->mime_types = formatter_mime_types;
    class->priority = G_PRIORITY_LOW;
    class->format = emfe_source_format;
}

static void
e_mail_formatter_source_init (EMailFormatterExtension *extension)
{
}