1 /* * $OpenBSD: defs.h,v 1.2 1996/06/26 05:39:05 deraadt Exp $*/ 2 /*- 3 * Copyright (c) 1992 Diomidis Spinellis. 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Diomidis Spinellis of Imperial College, University of London. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: @(#)defs.h 8.1 (Berkeley) 6/6/93 39 */ 40 41 /* 42 * Types of address specifications 43 */ 44 enum e_atype { 45 AT_RE, /* Line that match RE */ 46 AT_LINE, /* Specific line */ 47 AT_LAST, /* Last line */ 48 }; 49 50 /* 51 * Format of an address 52 */ 53 struct s_addr { 54 enum e_atype type; /* Address type */ 55 union { 56 u_long l; /* Line number */ 57 regex_t *r; /* Regular expression */ 58 } u; 59 }; 60 61 /* 62 * Substitution command 63 */ 64 struct s_subst { 65 int n; /* Occurrence to subst. */ 66 int p; /* True if p flag */ 67 char *wfile; /* NULL if no wfile */ 68 int wfd; /* Cached file descriptor */ 69 regex_t *re; /* Regular expression */ 70 int maxbref; /* Largest backreference. */ 71 u_long linenum; /* Line number. */ 72 char *new; /* Replacement text */ 73 }; 74 75 76 /* 77 * An internally compiled command. 78 * Initialy, label references are stored in t, on a second pass they 79 * are updated to pointers. 80 */ 81 struct s_command { 82 struct s_command *next; /* Pointer to next command */ 83 struct s_addr *a1, *a2; /* Start and end address */ 84 char *t; /* Text for : a c i r w */ 85 union { 86 struct s_command *c; /* Command(s) for b t { */ 87 struct s_subst *s; /* Substitute command */ 88 u_char *y; /* Replace command array */ 89 int fd; /* File descriptor for w */ 90 } u; 91 char code; /* Command code */ 92 u_int nonsel:1; /* True if ! */ 93 u_int inrange:1; /* True if in range */ 94 }; 95 96 /* 97 * Types of command arguments recognised by the parser 98 */ 99 enum e_args { 100 EMPTY, /* d D g G h H l n N p P q x = \0 */ 101 TEXT, /* a c i */ 102 NONSEL, /* ! */ 103 GROUP, /* { */ 104 ENDGROUP, /* } */ 105 COMMENT, /* # */ 106 BRANCH, /* b t */ 107 LABEL, /* : */ 108 RFILE, /* r */ 109 WFILE, /* w */ 110 SUBST, /* s */ 111 TR /* y */ 112 }; 113 114 /* 115 * Structure containing things to append before a line is read 116 */ 117 struct s_appends { 118 enum {AP_STRING, AP_FILE} type; 119 char *s; 120 size_t len; 121 }; 122 123 enum e_spflag { 124 APPEND, /* Append to the contents. */ 125 REPLACE, /* Replace the contents. */ 126 }; 127 128 /* 129 * Structure for a space (process, hold, otherwise). 130 */ 131 typedef struct { 132 char *space; /* Current space pointer. */ 133 size_t len; /* Current length. */ 134 int deleted; /* If deleted. */ 135 char *back; /* Backing memory. */ 136 size_t blen; /* Backing memory length. */ 137 } SPACE; 138 139 /* 140 * Error severity codes: 141 */ 142 #define FATAL 0 /* Exit immediately with 1 */ 143 #define ERROR 1 /* Continue, but change exit value */ 144 #define WARNING 2 /* Just print the warning */ 145 #define COMPILE 3 /* Print error, count and finish script */ 146 #define COMPILE2 3 /* Print error, count and finish script */ 147