1 /* $NetBSD: bufgap.h,v 1.1 2014/03/09 00:15:45 agc Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Alistair Crooks (agc@NetBSD.org) 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 #ifndef BUFGAP_H_ 32 #define BUFGAP_H_ 20091023 33 34 #include <sys/types.h> 35 36 #include <inttypes.h> 37 #include <stdio.h> 38 39 #ifndef BUFGAP_VERSION_STRING 40 #define BUFGAP_VERSION_STRING "20091022" 41 #endif 42 43 #ifndef BUFGAP_AUTHOR_STRING 44 #define BUFGAP_AUTHOR_STRING "Alistair Crooks (agc@netbsd.org)" 45 #endif 46 47 /* Constants for Buffer Gap routines */ 48 enum { 49 BGByte, 50 BGChar, 51 BGLine, 52 53 BGFromBOF, 54 BGFromHere, 55 BGFromEOF 56 }; 57 58 /* this struct describes a file in memory */ 59 typedef struct bufgap_t { 60 uint64_t size; /* size of file */ 61 uint64_t abc; /* # of bytes after the gap */ 62 uint64_t bbc; /* # of bytes before the gap */ 63 uint64_t acc; /* # of utf chars after the gap */ 64 uint64_t bcc; /* # of utf chars before the gap */ 65 uint64_t alc; /* # of records after the gap */ 66 uint64_t blc; /* # of records before the gap */ 67 char *name; /* file name - perhaps null */ 68 char *buf; /* buffer-gap buffer */ 69 char modified; /* file has been modified */ 70 } bufgap_t; 71 72 int bufgap_open(bufgap_t *, const char *); 73 void bufgap_close(bufgap_t *); 74 int bufgap_forwards(bufgap_t *, uint64_t, int); 75 int bufgap_backwards(bufgap_t *, uint64_t, int); 76 int bufgap_seek(bufgap_t *, int64_t, int, int); 77 char *bufgap_getstr(bufgap_t *); 78 int bufgap_getbin(bufgap_t *, void *, size_t); 79 int64_t bufgap_tell(bufgap_t *, int, int); 80 int64_t bufgap_size(bufgap_t *, int); 81 int bufgap_insert(bufgap_t *, const char *, int); 82 int bufgap_delete(bufgap_t *, uint64_t); 83 int bufgap_peek(bufgap_t *, int64_t); 84 char *bufgap_gettext(bufgap_t *, int64_t, int64_t); 85 int bufgap_write(bufgap_t *, FILE *); 86 int bufgap_dirty(bufgap_t *); 87 88 #endif /* !BUFGAP_H_ */ 89