1 /*- 2 * Copyright (c) 1992 Diomidis Spinellis. 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Diomidis Spinellis of Imperial College, University of London. 8 * 9 * %sccs.include.redist.c% 10 * 11 * @(#)defs.h 8.1 (Berkeley) 06/06/93 12 */ 13 14 /* 15 * Types of address specifications 16 */ 17 enum e_atype { 18 AT_RE, /* Line that match RE */ 19 AT_LINE, /* Specific line */ 20 AT_LAST, /* Last line */ 21 }; 22 23 /* 24 * Format of an address 25 */ 26 struct s_addr { 27 enum e_atype type; /* Address type */ 28 union { 29 u_long l; /* Line number */ 30 regex_t *r; /* Regular expression */ 31 } u; 32 }; 33 34 /* 35 * Substitution command 36 */ 37 struct s_subst { 38 int n; /* Occurrence to subst. */ 39 int p; /* True if p flag */ 40 char *wfile; /* NULL if no wfile */ 41 int wfd; /* Cached file descriptor */ 42 regex_t *re; /* Regular expression */ 43 int maxbref; /* Largest backreference. */ 44 u_long linenum; /* Line number. */ 45 char *new; /* Replacement text */ 46 }; 47 48 49 /* 50 * An internally compiled command. 51 * Initialy, label references are stored in t, on a second pass they 52 * are updated to pointers. 53 */ 54 struct s_command { 55 struct s_command *next; /* Pointer to next command */ 56 struct s_addr *a1, *a2; /* Start and end address */ 57 char *t; /* Text for : a c i r w */ 58 union { 59 struct s_command *c; /* Command(s) for b t { */ 60 struct s_subst *s; /* Substitute command */ 61 u_char *y; /* Replace command array */ 62 int fd; /* File descriptor for w */ 63 } u; 64 char code; /* Command code */ 65 u_int nonsel:1; /* True if ! */ 66 u_int inrange:1; /* True if in range */ 67 }; 68 69 /* 70 * Types of command arguments recognised by the parser 71 */ 72 enum e_args { 73 EMPTY, /* d D g G h H l n N p P q x = \0 */ 74 TEXT, /* a c i */ 75 NONSEL, /* ! */ 76 GROUP, /* { */ 77 COMMENT, /* # */ 78 BRANCH, /* b t */ 79 LABEL, /* : */ 80 RFILE, /* r */ 81 WFILE, /* w */ 82 SUBST, /* s */ 83 TR /* y */ 84 }; 85 86 /* 87 * Structure containing things to append before a line is read 88 */ 89 struct s_appends { 90 enum {AP_STRING, AP_FILE} type; 91 char *s; 92 size_t len; 93 }; 94 95 enum e_spflag { 96 APPEND, /* Append to the contents. */ 97 REPLACE, /* Replace the contents. */ 98 }; 99 100 /* 101 * Structure for a space (process, hold, otherwise). 102 */ 103 typedef struct { 104 char *space; /* Current space pointer. */ 105 size_t len; /* Current length. */ 106 int deleted; /* If deleted. */ 107 char *back; /* Backing memory. */ 108 size_t blen; /* Backing memory length. */ 109 } SPACE; 110 111 /* 112 * Error severity codes: 113 */ 114 #define FATAL 0 /* Exit immediately with 1 */ 115 #define ERROR 1 /* Continue, but change exit value */ 116 #define WARNING 2 /* Just print the warning */ 117 #define COMPILE 3 /* Print error, count and finish script */ 118 #define COMPILE2 3 /* Print error, count and finish script */ 119