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89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/* $NetBSD: bufgap.h,v 1.1 2014/02/04 02:11:18 agc Exp $ */
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/*-
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* Copyright (c) 1996-2009 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Alistair Crooks (agc@NetBSD.org)
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef BUFGAP_H_
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#define BUFGAP_H_ 20091023
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#include <sys/types.h>
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#include <inttypes.h>
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#include <stdio.h>
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#ifndef BUFGAP_VERSION_STRING
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#define BUFGAP_VERSION_STRING "20091022"
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#endif
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#ifndef BUFGAP_AUTHOR_STRING
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#define BUFGAP_AUTHOR_STRING "Alistair Crooks (agc@netbsd.org)"
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#endif
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/* Constants for Buffer Gap routines */
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enum {
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BGByte,
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BGChar,
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BGLine,
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BGFromBOF,
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BGFromHere,
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BGFromEOF
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};
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/* this struct describes a file in memory */
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typedef struct bufgap_t {
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uint64_t size; /* size of file */
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uint64_t abc; /* # of bytes after the gap */
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uint64_t bbc; /* # of bytes before the gap */
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uint64_t acc; /* # of utf chars after the gap */
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uint64_t bcc; /* # of utf chars before the gap */
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uint64_t alc; /* # of records after the gap */
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uint64_t blc; /* # of records before the gap */
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char *name; /* file name - perhaps null */
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char *buf; /* buffer-gap buffer */
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char modified; /* file has been modified */
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} bufgap_t;
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int bufgap_open(bufgap_t *, const char *);
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void bufgap_close(bufgap_t *);
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int bufgap_forwards(bufgap_t *, uint64_t, int);
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int bufgap_backwards(bufgap_t *, uint64_t, int);
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int bufgap_seek(bufgap_t *, int64_t, int, int);
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char *bufgap_getstr(bufgap_t *);
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int bufgap_getbin(bufgap_t *, void *, size_t);
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int64_t bufgap_tell(bufgap_t *, int, int);
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int64_t bufgap_size(bufgap_t *, int);
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int bufgap_insert(bufgap_t *, const char *, int);
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int bufgap_delete(bufgap_t *, uint64_t);
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int bufgap_peek(bufgap_t *, int64_t);
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char *bufgap_gettext(bufgap_t *, int64_t, int64_t);
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int bufgap_write(bufgap_t *, FILE *);
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int bufgap_dirty(bufgap_t *);
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#endif /* !BUFGAP_H_ */
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