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