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/*
 * e-mail-parser-extension.h
 *
 * 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/>
 *
 */

#ifndef E_MAIL_PARSER_EXTENSION_H
#define E_MAIL_PARSER_EXTENSION_H

#include <em-format/e-mail-parser.h>
#include <camel/camel.h>

/* Standard GObject macros */
#define E_TYPE_MAIL_PARSER_EXTENSION \
    (e_mail_parser_extension_get_type ())
#define E_MAIL_PARSER_EXTENSION(obj) \
    (G_TYPE_CHECK_INSTANCE_CAST \
    ((obj), E_TYPE_MAIL_PARSER_EXTENSION, EMailParserExtension))
#define E_MAIL_PARSER_EXTENSION_CLASS(cls) \
    (G_TYPE_CHECK_CLASS_CAST \
    ((cls), E_TYPE_MAIL_PARSER_EXTENSION, EMailParserExtensionClass))
#define E_IS_MAIL_PARSER_EXTENSION(obj) \
    (G_TYPE_CHECK_INSTANCE_TYPE \
    ((obj), E_TYPE_MAIL_PARSER_EXTENSION))
#define E_IS_MAIL_PARSER_EXTENSION_CLASS(cls) \
    (G_TYPE_CHECK_CLASS_TYPE \
    ((cls), E_TYPE_MAIL_PARSER_EXTENSION))
#define E_MAIL_PARSER_EXTENSION_GET_CLASS(obj) \
    (G_TYPE_INSTANCE_GET_CLASS \
    ((obj), E_TYPE_MAIL_PARSER_EXTENSION, EMailParserExtensionClass))

#define EMP_EXTENSION_GET_PARSER(e) \
    E_MAIL_PARSER (e_extension_get_extensible (E_EXTENSION (e)))

G_BEGIN_DECLS

typedef struct _EMailParserExtension EMailParserExtension;
typedef struct _EMailParserExtensionClass EMailParserExtensionClass;
typedef struct _EMailParserExtensionPrivate EMailParserExtensionPrivate;

/**
 * EMailParserExtensionFlags:
 * @E_MAIL_PARSER_EXTENSION_INLINE:
 *    Don't parse as attachment.
 * @E_MAIL_PARSER_EXTENSION_INLINE_DISPOSITION:
 *    Always expand.
 * @E_MAIL_PARSER_EXTENSION_COMPOUND_TYPE:
 *    Always check what's inside.
 **/
typedef enum {
    E_MAIL_PARSER_EXTENSION_INLINE          = 1 << 0,
    E_MAIL_PARSER_EXTENSION_INLINE_DISPOSITION  = 1 << 1,
    E_MAIL_PARSER_EXTENSION_COMPOUND_TYPE       = 1 << 2
} EMailParserExtensionFlags;

/**
 * EMailParserExtension:
 *
 * The #EMailParserExtension is an abstract interface for all extensions for
 * #EMailParser.
 */
struct _EMailParserExtension {
    GObject parent;
    EMailParserExtensionPrivate *priv;
};

struct _EMailParserExtensionClass {
    GObjectClass parent_class;

    /* This is a NULL-terminated array of supported MIME types.
     * The MIME types can be exact (e.g. "text/plain") or use a
     * wildcard (e.g. "text/ *"). */
    const gchar **mime_types;

    /* See the flag descriptions above. */
    EMailParserExtensionFlags flags;

    gboolean    (*parse)        (EMailParserExtension *extension,
                         EMailParser *parser,
                         CamelMimePart *mime_part,
                         GString *part_id,
                         GCancellable *cancellable,
                         GQueue *out_mail_parts);
};

GType       e_mail_parser_extension_get_type
                        (void) G_GNUC_CONST;
gboolean    e_mail_parser_extension_parse   (EMailParserExtension *extension,
                         EMailParser *parser,
                         CamelMimePart *mime_part,
                         GString *part_id,
                         GCancellable *cancellable,
                         GQueue *out_mail_parts);

G_END_DECLS

#endif /* E_MAIL_PARSER_EXTENSION_H */