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

/*
 * e-mail-formatter-quote.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/>
 *
 */

#include "e-mail-formatter-quote.h"

#include <camel/camel.h>

#include "e-mail-formatter-extension.h"
#include "e-mail-format-extensions.h"
#include "e-mail-part.h"
#include "e-mail-part-attachment.h"
#include "e-mail-part-utils.h"

#include <libebackend/libebackend.h>
#include <gdk/gdk.h>
#include <glib/gi18n.h>

struct _EMailFormatterQuotePrivate {
    gchar *credits;
    EMailFormatterQuoteFlags flags;
};

#define E_MAIL_FORMATTER_QUOTE_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_MAIL_FORMATTER_QUOTE, EMailFormatterQuotePrivate))

static gpointer e_mail_formatter_quote_parent_class = 0;

static EMailFormatterContext *
mail_formatter_quote_create_context (EMailFormatter *formatter)
{
    return g_malloc0 (sizeof (EMailFormatterQuoteContext));
}

static void
mail_formatter_quote_free_context (EMailFormatter *formatter,
                                   EMailFormatterContext *context)
{
    g_free ((EMailFormatterQuoteContext *) context);
}

static void
mail_formatter_quote_run (EMailFormatter *formatter,
                          EMailFormatterContext *context,
                          CamelStream *stream,
                          GCancellable *cancellable)
{
    EMailFormatterQuote *qf;
    EMailFormatterQuoteContext *qf_context;
    GSettings *settings;
    GSList *iter;

    if (g_cancellable_is_cancelled (cancellable))
        return;

    qf = E_MAIL_FORMATTER_QUOTE (formatter);

    qf_context = (EMailFormatterQuoteContext *) context;
    qf_context->qf_flags = qf->priv->flags;

    g_seekable_seek (
        G_SEEKABLE (stream),
        0, G_SEEK_SET, NULL, NULL);

    settings = g_settings_new ("org.gnome.evolution.mail");
    if (g_settings_get_boolean (
        settings, "composer-top-signature"))
        camel_stream_write_string (
            stream, "<br>\n", cancellable, NULL);
    g_object_unref (settings);

    if (qf->priv->credits && *qf->priv->credits) {
        gchar *credits = g_strdup_printf ("%s<br>", qf->priv->credits);
        camel_stream_write_string (stream, credits, cancellable, NULL);
        g_free (credits);
    } else {
        camel_stream_write_string (stream, "<br>", cancellable, NULL);
    }

    if (qf->priv->flags & E_MAIL_FORMATTER_QUOTE_FLAG_CITE) {
        camel_stream_write_string (stream,
            "<!--+GtkHTML:<DATA class=\"ClueFlow\" "
            "key=\"orig\" value=\"1\">-->\n"
            "<blockquote type=cite>\n", cancellable, NULL);
    }

    for (iter = context->parts; iter; iter = g_slist_next (iter)) {
        EMailPart *part = iter->data;

        if (!part)
            continue;

        if (g_str_has_suffix (part->id, ".headers") &&
           !(qf_context->qf_flags & E_MAIL_FORMATTER_QUOTE_FLAG_HEADERS)) {
            continue;
        }

        if (g_str_has_suffix (part->id, ".rfc822")) {
            gchar *end = g_strconcat (part->id, ".end", NULL);

            while (iter) {
                EMailPart *p = iter->data;
                if (!p) {
                    iter = g_slist_next (iter);
                    if (!iter) {
                        break;
                    }
                    continue;
                }

                if (g_strcmp0 (p->id, end) == 0)
                    break;

                iter = g_slist_next (iter);
                if (!iter) {
                    break;
                }
            }
            g_free (end);

            continue;
        }

        if (part->is_hidden || part->is_attachment)
            continue;

        e_mail_formatter_format_as (
            formatter, context, part, stream,
            part->mime_type, cancellable);
    }

    if (qf->priv->flags & E_MAIL_FORMATTER_QUOTE_FLAG_CITE) {
        camel_stream_write_string (
            stream, "</blockquote><!--+GtkHTML:"
            "<DATA class=\"ClueFlow\" clear=\"orig\">-->",
            cancellable, NULL);
    }
}

static void
e_mail_formatter_quote_init (EMailFormatterQuote *formatter)
{
    formatter->priv = E_MAIL_FORMATTER_QUOTE_GET_PRIVATE (formatter);
}

static void
e_mail_formatter_quote_finalize (GObject *object)
{
    /* Chain up to parent's finalize() */
    G_OBJECT_CLASS (e_mail_formatter_quote_parent_class)->finalize (object);
}

static void
e_mail_formatter_quote_base_init (EMailFormatterQuoteClass *class)
{
    e_mail_formatter_quote_internal_extensions_load (
        E_MAIL_EXTENSION_REGISTRY (
            E_MAIL_FORMATTER_CLASS (class)->extension_registry));

    E_MAIL_FORMATTER_CLASS (class)->text_html_flags =
        CAMEL_MIME_FILTER_TOHTML_PRE |
        CAMEL_MIME_FILTER_TOHTML_CONVERT_URLS |
        CAMEL_MIME_FILTER_TOHTML_CONVERT_ADDRESSES;
}

static void
e_mail_formatter_quote_class_init (EMailFormatterQuoteClass *class)
{
    GObjectClass *object_class;
    EMailFormatterClass *formatter_class;

    e_mail_formatter_quote_parent_class = g_type_class_peek_parent (class);
    g_type_class_add_private (class, sizeof (EMailFormatterQuotePrivate));

    formatter_class = E_MAIL_FORMATTER_CLASS (class);
    formatter_class->run = mail_formatter_quote_run;
    formatter_class->create_context = mail_formatter_quote_create_context;
    formatter_class->free_context = mail_formatter_quote_free_context;

    object_class = G_OBJECT_CLASS (class);
    object_class->finalize = e_mail_formatter_quote_finalize;
}

GType
e_mail_formatter_quote_get_type (void)
{
    static GType type = 0;

    if (G_UNLIKELY (type == 0)) {
        const GTypeInfo type_info = {
            sizeof (EMailFormatterClass),
            (GBaseInitFunc) e_mail_formatter_quote_base_init,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) e_mail_formatter_quote_class_init,
            (GClassFinalizeFunc) NULL,
            NULL,   /* class_data */
            sizeof (EMailFormatterQuote),
            0,  /* n_preallocs */
            (GInstanceInitFunc) e_mail_formatter_quote_init,
            NULL    /* value_table */
        };

        type = g_type_register_static (E_TYPE_MAIL_FORMATTER,
                "EMailFormatterQuote", &type_info, 0);
    }

    return type;
}

EMailFormatter *
e_mail_formatter_quote_new (const gchar *credits,
                            EMailFormatterQuoteFlags flags)
{
    EMailFormatterQuote *formatter;
    formatter = g_object_new (E_TYPE_MAIL_FORMATTER_QUOTE, NULL);

    formatter->priv->credits = g_strdup (credits);
    formatter->priv->flags = flags;

    return (EMailFormatter *) formatter;
}