88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
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/* camel-stream-fs.h :stream based on unix filesystem */
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/*
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* Author:
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* Bertrand Guiheneuf <bertrand@helixcode.com>
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*
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* Copyright 1999, 2000 Ximian, Inc. (www.ximian.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#ifndef CAMEL_SEEKABLE_STREAM_H
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#define CAMEL_SEEKABLE_STREAM_H 1
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#ifdef __cplusplus
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extern "C" {
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#pragma }
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#endif /* __cplusplus }*/
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#include <sys/types.h>
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#include <unistd.h>
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#include <camel/camel-stream.h>
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#define CAMEL_SEEKABLE_STREAM_TYPE (camel_seekable_stream_get_type ())
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#define CAMEL_SEEKABLE_STREAM(obj) (CAMEL_CHECK_CAST((obj), CAMEL_SEEKABLE_STREAM_TYPE, CamelSeekableStream))
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#define CAMEL_SEEKABLE_STREAM_CLASS(k) (CAMEL_CHECK_CLASS_CAST ((k), CAMEL_SEEKABLE_STREAM_TYPE, CamelSeekableStreamClass))
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#define CAMEL_IS_SEEKABLE_STREAM(o) (CAMEL_CHECK_TYPE((o), CAMEL_SEEKABLE_STREAM_TYPE))
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typedef enum
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{
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CAMEL_STREAM_SET = SEEK_SET,
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CAMEL_STREAM_CUR = SEEK_CUR,
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CAMEL_STREAM_END = SEEK_END
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} CamelStreamSeekPolicy;
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#define CAMEL_STREAM_UNBOUND (~0)
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struct _CamelSeekableStream
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{
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CamelStream parent_object;
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off_t position; /* current postion in the stream */
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off_t bound_start; /* first valid position */
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off_t bound_end; /* first invalid position */
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};
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typedef struct {
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CamelStreamClass parent_class;
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/* Virtual methods */
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off_t (*seek) (CamelSeekableStream *stream, off_t offset,
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CamelStreamSeekPolicy policy);
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off_t (*tell) (CamelSeekableStream *stream);
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int (*set_bounds) (CamelSeekableStream *stream,
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off_t start, off_t end);
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} CamelSeekableStreamClass;
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/* Standard Camel function */
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CamelType camel_seekable_stream_get_type (void);
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/* public methods */
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off_t camel_seekable_stream_seek (CamelSeekableStream *stream, off_t offset,
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CamelStreamSeekPolicy policy);
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off_t camel_seekable_stream_tell (CamelSeekableStream *stream);
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int camel_seekable_stream_set_bounds (CamelSeekableStream *, off_t start, off_t end);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* CAMEL_SEEKABLE_STREAM_H */
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