1 /* $NetBSD: defs.h,v 1.7 1997/01/09 20:21:28 tls Exp $ */ 2 3 /*- 4 * Copyright (c) 1992 Diomidis Spinellis. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Diomidis Spinellis of Imperial College, University of London. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * from: @(#)defs.h 8.1 (Berkeley) 6/6/93 40 * $NetBSD: defs.h,v 1.7 1997/01/09 20:21:28 tls Exp $ 41 */ 42 43 /* 44 * Types of address specifications 45 */ 46 enum e_atype { 47 AT_RE, /* Line that match RE */ 48 AT_LINE, /* Specific line */ 49 AT_LAST, /* Last line */ 50 }; 51 52 /* 53 * Format of an address 54 */ 55 struct s_addr { 56 enum e_atype type; /* Address type */ 57 union { 58 u_long l; /* Line number */ 59 regex_t *r; /* Regular expression */ 60 } u; 61 }; 62 63 /* 64 * Substitution command 65 */ 66 struct s_subst { 67 int n; /* Occurrence to subst. */ 68 int p; /* True if p flag */ 69 char *wfile; /* NULL if no wfile */ 70 int wfd; /* Cached file descriptor */ 71 regex_t *re; /* Regular expression */ 72 int maxbref; /* Largest backreference. */ 73 u_long linenum; /* Line number. */ 74 char *new; /* Replacement text */ 75 }; 76 77 78 /* 79 * An internally compiled command. 80 * Initialy, label references are stored in t, on a second pass they 81 * are updated to pointers. 82 */ 83 struct s_command { 84 struct s_command *next; /* Pointer to next command */ 85 struct s_addr *a1, *a2; /* Start and end address */ 86 char *t; /* Text for : a c i r w */ 87 union { 88 struct s_command *c; /* Command(s) for b t { */ 89 struct s_subst *s; /* Substitute command */ 90 u_char *y; /* Replace command array */ 91 int fd; /* File descriptor for w */ 92 } u; 93 char code; /* Command code */ 94 u_int nonsel:1; /* True if ! */ 95 u_int inrange:1; /* True if in range */ 96 }; 97 98 /* 99 * Types of command arguments recognised by the parser 100 */ 101 enum e_args { 102 EMPTY, /* d D g G h H l n N p P q x = \0 */ 103 TEXT, /* a c i */ 104 NONSEL, /* ! */ 105 GROUP, /* { */ 106 ENDGROUP, /* } */ 107 COMMENT, /* # */ 108 BRANCH, /* b t */ 109 LABEL, /* : */ 110 RFILE, /* r */ 111 WFILE, /* w */ 112 SUBST, /* s */ 113 TR /* y */ 114 }; 115 116 /* 117 * Structure containing things to append before a line is read 118 */ 119 struct s_appends { 120 enum {AP_STRING, AP_FILE} type; 121 char *s; 122 size_t len; 123 }; 124 125 enum e_spflag { 126 APPEND, /* Append to the contents. */ 127 REPLACE, /* Replace the contents. */ 128 }; 129 130 /* 131 * Structure for a space (process, hold, otherwise). 132 */ 133 typedef struct { 134 char *space; /* Current space pointer. */ 135 size_t len; /* Current length. */ 136 int deleted; /* If deleted. */ 137 char *back; /* Backing memory. */ 138 size_t blen; /* Backing memory length. */ 139 } SPACE; 140 141 /* 142 * Error severity codes: 143 */ 144 #define FATAL 0 /* Exit immediately with 1 */ 145 #define ERROR 1 /* Continue, but change exit value */ 146 #define WARNING 2 /* Just print the warning */ 147 #define COMPILE 3 /* Print error, count and finish script */ 148 #define COMPILE2 3 /* Print error, count and finish script */ 149