crypto/external/bsd/netpgp/dist/src/lib/bufgap.h

   1 /* $NetBSD: bufgap.c,v 1.1 2009/12/05 07:08:18 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_ */