ed.h revision 50471
1/* ed.h: type and constant definitions for the ed editor. */ 2/* 3 * Copyright (c) 1993 Andrew Moore 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * @(#)ed.h,v 1.5 1994/02/01 00:34:39 alm Exp 28 * $FreeBSD: head/bin/ed/ed.h 50471 1999-08-27 23:15:48Z peter $ 29 */ 30 31#include <sys/param.h> /* for MAXPATHLEN */ 32#include <errno.h> 33#if defined(sun) || defined(__NetBSD__) 34# include <limits.h> 35#endif 36#include <regex.h> 37#include <signal.h> 38#include <stdio.h> 39#include <stdlib.h> 40#include <string.h> 41#include <unistd.h> 42 43#define ERR (-2) 44#define EMOD (-3) 45#define FATAL (-4) 46 47#ifndef MAXPATHLEN 48# define MAXPATHLEN 255 /* _POSIX_PATH_MAX */ 49#endif 50 51#define MINBUFSZ 512 /* minimum buffer size - must be > 0 */ 52#define SE_MAX 30 /* max subexpressions in a regular expression */ 53#ifdef INT_MAX 54# define LINECHARS INT_MAX /* max chars per line */ 55#else 56# define LINECHARS MAXINT /* max chars per line */ 57#endif 58 59/* gflags */ 60#define GLB 001 /* global command */ 61#define GPR 002 /* print after command */ 62#define GLS 004 /* list after command */ 63#define GNP 010 /* enumerate after command */ 64#define GSG 020 /* global substitute */ 65 66typedef regex_t pattern_t; 67 68/* Line node */ 69typedef struct line { 70 struct line *q_forw; 71 struct line *q_back; 72 off_t seek; /* address of line in scratch buffer */ 73 int len; /* length of line */ 74} line_t; 75 76 77typedef struct undo { 78 79/* type of undo nodes */ 80#define UADD 0 81#define UDEL 1 82#define UMOV 2 83#define VMOV 3 84 85 int type; /* command type */ 86 line_t *h; /* head of list */ 87 line_t *t; /* tail of list */ 88} undo_t; 89 90#ifndef max 91# define max(a,b) ((a) > (b) ? (a) : (b)) 92#endif 93#ifndef min 94# define min(a,b) ((a) < (b) ? (a) : (b)) 95#endif 96 97#define INC_MOD(l, k) ((l) + 1 > (k) ? 0 : (l) + 1) 98#define DEC_MOD(l, k) ((l) - 1 < 0 ? (k) : (l) - 1) 99 100/* SPL1: disable some interrupts (requires reliable signals) */ 101#define SPL1() mutex++ 102 103/* SPL0: enable all interrupts; check sigflags (requires reliable signals) */ 104#define SPL0() \ 105if (--mutex == 0) { \ 106 if (sigflags & (1 << (SIGHUP - 1))) handle_hup(SIGHUP); \ 107 if (sigflags & (1 << (SIGINT - 1))) handle_int(SIGINT); \ 108} 109 110/* STRTOL: convert a string to long */ 111#define STRTOL(i, p) { \ 112 if (((i = strtol(p, &p, 10)) == LONG_MIN || i == LONG_MAX) && \ 113 errno == ERANGE) { \ 114 sprintf(errmsg, "number out of range"); \ 115 i = 0; \ 116 return ERR; \ 117 } \ 118} 119 120#if defined(sun) || defined(NO_REALLOC_NULL) 121/* REALLOC: assure at least a minimum size for buffer b */ 122#define REALLOC(b,n,i,err) \ 123if ((i) > (n)) { \ 124 int ti = (n); \ 125 char *ts; \ 126 SPL1(); \ 127 if ((b) != NULL) { \ 128 if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \ 129 fprintf(stderr, "%s\n", strerror(errno)); \ 130 sprintf(errmsg, "out of memory"); \ 131 SPL0(); \ 132 return err; \ 133 } \ 134 } else { \ 135 if ((ts = (char *) malloc(ti += max((i), MINBUFSZ))) == NULL) { \ 136 fprintf(stderr, "%s\n", strerror(errno)); \ 137 sprintf(errmsg, "out of memory"); \ 138 SPL0(); \ 139 return err; \ 140 } \ 141 } \ 142 (n) = ti; \ 143 (b) = ts; \ 144 SPL0(); \ 145} 146#else /* NO_REALLOC_NULL */ 147/* REALLOC: assure at least a minimum size for buffer b */ 148#define REALLOC(b,n,i,err) \ 149if ((i) > (n)) { \ 150 int ti = (n); \ 151 char *ts; \ 152 SPL1(); \ 153 if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \ 154 fprintf(stderr, "%s\n", strerror(errno)); \ 155 sprintf(errmsg, "out of memory"); \ 156 SPL0(); \ 157 return err; \ 158 } \ 159 (n) = ti; \ 160 (b) = ts; \ 161 SPL0(); \ 162} 163#endif /* NO_REALLOC_NULL */ 164 165/* REQUE: link pred before succ */ 166#define REQUE(pred, succ) (pred)->q_forw = (succ), (succ)->q_back = (pred) 167 168/* INSQUE: insert elem in circular queue after pred */ 169#define INSQUE(elem, pred) \ 170{ \ 171 REQUE((elem), (pred)->q_forw); \ 172 REQUE((pred), elem); \ 173} 174 175/* REMQUE: remove_lines elem from circular queue */ 176#define REMQUE(elem) REQUE((elem)->q_back, (elem)->q_forw); 177 178/* NUL_TO_NEWLINE: overwrite ASCII NULs with newlines */ 179#define NUL_TO_NEWLINE(s, l) translit_text(s, l, '\0', '\n') 180 181/* NEWLINE_TO_NUL: overwrite newlines with ASCII NULs */ 182#define NEWLINE_TO_NUL(s, l) translit_text(s, l, '\n', '\0') 183 184#ifdef sun 185# define strerror(n) sys_errlist[n] 186#endif 187 188#ifndef __P 189# ifndef __STDC__ 190# define __P(proto) () 191# else 192# define __P(proto) proto 193# endif 194#endif 195 196/* Local Function Declarations */ 197void add_line_node __P((line_t *)); 198int append_lines __P((long)); 199int apply_subst_template __P((char *, regmatch_t *, int, int)); 200int build_active_list __P((int)); 201int cbc_decode __P((char *, FILE *)); 202int cbc_encode __P((char *, int, FILE *)); 203int check_addr_range __P((long, long)); 204void clear_active_list __P((void)); 205void clear_undo_stack __P((void)); 206int close_sbuf __P((void)); 207int copy_lines __P((long)); 208int delete_lines __P((long, long)); 209void des_error __P((char *)); 210int display_lines __P((long, long, int)); 211line_t *dup_line_node __P((line_t *)); 212int exec_command __P((void)); 213long exec_global __P((int, int)); 214void expand_des_key __P((char *, char *)); 215int extract_addr_range __P((void)); 216char *extract_pattern __P((int)); 217int extract_subst_tail __P((int *, long *)); 218char *extract_subst_template __P((void)); 219int filter_lines __P((long, long, char *)); 220int flush_des_file __P((FILE *)); 221line_t *get_addressed_line_node __P((long)); 222pattern_t *get_compiled_pattern __P((void)); 223int get_des_char __P((FILE *)); 224char *get_extended_line __P((int *, int)); 225char *get_filename __P((void)); 226int get_keyword __P((void)); 227long get_line_node_addr __P((line_t *)); 228long get_matching_node_addr __P((pattern_t *, int)); 229long get_marked_node_addr __P((int)); 230char *get_sbuf_line __P((line_t *)); 231int get_shell_command __P((void)); 232int get_stream_line __P((FILE *)); 233int get_tty_line __P((void)); 234void handle_hup __P((int)); 235void handle_int __P((int)); 236void handle_winch __P((int)); 237int has_trailing_escape __P((char *, char *)); 238int hex_to_binary __P((int, int)); 239void init_buffers __P((void)); 240void init_des_cipher __P((void)); 241int is_legal_filename __P((char *)); 242int join_lines __P((long, long)); 243int mark_line_node __P((line_t *, int)); 244int move_lines __P((long)); 245line_t *next_active_node __P(()); 246long next_addr __P((void)); 247int open_sbuf __P((void)); 248char *parse_char_class __P((char *)); 249int pop_undo_stack __P((void)); 250undo_t *push_undo_stack __P((int, long, long)); 251int put_des_char __P((int, FILE *)); 252char *put_sbuf_line __P((char *)); 253int put_stream_line __P((FILE *, char *, int)); 254int put_tty_line __P((char *, int, long, int)); 255void quit __P((int)); 256long read_file __P((char *, long)); 257long read_stream __P((FILE *, long)); 258int search_and_replace __P((pattern_t *, int, int)); 259int set_active_node __P((line_t *)); 260void set_des_key __P((char *)); 261void signal_hup __P((int)); 262void signal_int __P((int)); 263char *strip_escapes __P((char *)); 264int substitute_matching_text __P((pattern_t *, line_t *, int, int)); 265char *translit_text __P((char *, int, int, int)); 266void unmark_line_node __P((line_t *)); 267void unset_active_nodes __P((line_t *, line_t *)); 268long write_file __P((char *, char *, long, long)); 269long write_stream __P((FILE *, long, long)); 270 271/* global buffers */ 272extern char stdinbuf[]; 273extern char *ibuf; 274extern char *ibufp; 275extern int ibufsz; 276 277/* global flags */ 278extern int isbinary; 279extern int isglobal; 280extern int modified; 281extern int mutex; 282extern int sigflags; 283 284/* global vars */ 285extern long addr_last; 286extern long current_addr; 287extern char errmsg[]; 288extern long first_addr; 289extern int lineno; 290extern long second_addr; 291#ifdef sun 292extern char *sys_errlist[]; 293#endif 294