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 * $FreeBSD$ 29 */ 30 31#include <sys/param.h> 32#include <errno.h> 33#include <limits.h> 34#include <regex.h> 35#include <signal.h> 36#include <stdio.h> 37#include <stdlib.h> 38#include <string.h> 39#include <unistd.h> 40 41#define ERR (-2) 42#define EMOD (-3) 43#define FATAL (-4) 44 45#define MINBUFSZ 512 /* minimum buffer size - must be > 0 */ 46#define SE_MAX 30 /* max subexpressions in a regular expression */ 47#ifdef INT_MAX 48# define LINECHARS INT_MAX /* max chars per line */ 49#else 50# define LINECHARS MAXINT /* max chars per line */ 51#endif 52 53/* gflags */ 54#define GLB 001 /* global command */ 55#define GPR 002 /* print after command */ 56#define GLS 004 /* list after command */ 57#define GNP 010 /* enumerate after command */ 58#define GSG 020 /* global substitute */ 59 60typedef regex_t pattern_t; 61 62/* Line node */ 63typedef struct line { 64 struct line *q_forw; 65 struct line *q_back; 66 off_t seek; /* address of line in scratch buffer */ 67 int len; /* length of line */ 68} line_t; 69 70 71typedef struct undo { 72 73/* type of undo nodes */ 74#define UADD 0 75#define UDEL 1 76#define UMOV 2 77#define VMOV 3 78 79 int type; /* command type */ 80 line_t *h; /* head of list */ 81 line_t *t; /* tail of list */ 82} undo_t; 83 84#ifndef max 85# define max(a,b) ((a) > (b) ? (a) : (b)) 86#endif 87#ifndef min 88# define min(a,b) ((a) < (b) ? (a) : (b)) 89#endif 90 91#define INC_MOD(l, k) ((l) + 1 > (k) ? 0 : (l) + 1) 92#define DEC_MOD(l, k) ((l) - 1 < 0 ? (k) : (l) - 1) 93 94/* SPL1: disable some interrupts (requires reliable signals) */ 95#define SPL1() mutex++ 96 97/* SPL0: enable all interrupts; check sigflags (requires reliable signals) */ 98#define SPL0() \ 99if (--mutex == 0) { \ 100 if (sigflags & (1 << (SIGHUP - 1))) handle_hup(SIGHUP); \ 101 if (sigflags & (1 << (SIGINT - 1))) handle_int(SIGINT); \ 102} 103 104/* STRTOL: convert a string to long */ 105#define STRTOL(i, p) { \ 106 if (((i = strtol(p, &p, 10)) == LONG_MIN || i == LONG_MAX) && \ 107 errno == ERANGE) { \ 108 errmsg = "number out of range"; \ 109 i = 0; \ 110 return ERR; \ 111 } \ 112} 113 114#if defined(sun) || defined(NO_REALLOC_NULL) 115/* REALLOC: assure at least a minimum size for buffer b */ 116#define REALLOC(b,n,i,err) \ 117if ((i) > (n)) { \ 118 int ti = (n); \ 119 char *ts; \ 120 SPL1(); \ 121 if ((b) != NULL) { \ 122 if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \ 123 fprintf(stderr, "%s\n", strerror(errno)); \ 124 errmsg = "out of memory"; \ 125 SPL0(); \ 126 return err; \ 127 } \ 128 } else { \ 129 if ((ts = (char *) malloc(ti += max((i), MINBUFSZ))) == NULL) { \ 130 fprintf(stderr, "%s\n", strerror(errno)); \ 131 errmsg = "out of memory"; \ 132 SPL0(); \ 133 return err; \ 134 } \ 135 } \ 136 (n) = ti; \ 137 (b) = ts; \ 138 SPL0(); \ 139} 140#else /* NO_REALLOC_NULL */ 141/* REALLOC: assure at least a minimum size for buffer b */ 142#define REALLOC(b,n,i,err) \ 143if ((i) > (n)) { \ 144 int ti = (n); \ 145 char *ts; \ 146 SPL1(); \ 147 if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \ 148 fprintf(stderr, "%s\n", strerror(errno)); \ 149 errmsg = "out of memory"; \ 150 SPL0(); \ 151 return err; \ 152 } \ 153 (n) = ti; \ 154 (b) = ts; \ 155 SPL0(); \ 156} 157#endif /* NO_REALLOC_NULL */ 158 159/* REQUE: link pred before succ */ 160#define REQUE(pred, succ) (pred)->q_forw = (succ), (succ)->q_back = (pred) 161 162/* INSQUE: insert elem in circular queue after pred */ 163#define INSQUE(elem, pred) \ 164{ \ 165 REQUE((elem), (pred)->q_forw); \ 166 REQUE((pred), elem); \ 167} 168 169/* REMQUE: remove_lines elem from circular queue */ 170#define REMQUE(elem) REQUE((elem)->q_back, (elem)->q_forw); 171 172/* NUL_TO_NEWLINE: overwrite ASCII NULs with newlines */ 173#define NUL_TO_NEWLINE(s, l) translit_text(s, l, '\0', '\n') 174 175/* NEWLINE_TO_NUL: overwrite newlines with ASCII NULs */ 176#define NEWLINE_TO_NUL(s, l) translit_text(s, l, '\n', '\0') 177 178#ifdef ED_DES_INCLUDES 179void des_error(const char *); 180void expand_des_key(char *, char *); 181void set_des_key(DES_cblock *); 182#endif 183 184/* Other DES support stuff */ 185void init_des_cipher(void); 186int flush_des_file(FILE *); 187int get_des_char(FILE *); 188int put_des_char(int, FILE *); 189 190/* Local Function Declarations */ 191void add_line_node(line_t *); 192int append_lines(long); 193int apply_subst_template(const char *, regmatch_t *, int, int); 194int build_active_list(int); 195int cbc_decode(unsigned char *, FILE *); 196int cbc_encode(unsigned char *, int, FILE *); 197int check_addr_range(long, long); 198void clear_active_list(void); 199void clear_undo_stack(void); 200int close_sbuf(void); 201int copy_lines(long); 202int delete_lines(long, long); 203int display_lines(long, long, int); 204line_t *dup_line_node(line_t *); 205int exec_command(void); 206long exec_global(int, int); 207int extract_addr_range(void); 208char *extract_pattern(int); 209int extract_subst_tail(int *, long *); 210char *extract_subst_template(void); 211int filter_lines(long, long, char *); 212line_t *get_addressed_line_node(long); 213pattern_t *get_compiled_pattern(void); 214char *get_extended_line(int *, int); 215char *get_filename(void); 216int get_keyword(void); 217long get_line_node_addr(line_t *); 218long get_matching_node_addr(pattern_t *, int); 219long get_marked_node_addr(int); 220char *get_sbuf_line(line_t *); 221int get_shell_command(void); 222int get_stream_line(FILE *); 223int get_tty_line(void); 224void handle_hup(int); 225void handle_int(int); 226void handle_winch(int); 227int has_trailing_escape(char *, char *); 228int hex_to_binary(int, int); 229void init_buffers(void); 230int is_legal_filename(char *); 231int join_lines(long, long); 232int mark_line_node(line_t *, int); 233int move_lines(long); 234line_t *next_active_node(void); 235long next_addr(void); 236int open_sbuf(void); 237char *parse_char_class(char *); 238int pop_undo_stack(void); 239undo_t *push_undo_stack(int, long, long); 240const char *put_sbuf_line(const char *); 241int put_stream_line(FILE *, const char *, int); 242int put_tty_line(const char *, int, long, int); 243void quit(int); 244long read_file(char *, long); 245long read_stream(FILE *, long); 246int search_and_replace(pattern_t *, int, int); 247int set_active_node(line_t *); 248void signal_hup(int); 249void signal_int(int); 250char *strip_escapes(char *); 251int substitute_matching_text(pattern_t *, line_t *, int, int); 252char *translit_text(char *, int, int, int); 253void unmark_line_node(line_t *); 254void unset_active_nodes(line_t *, line_t *); 255long write_file(char *, const char *, long, long); 256long write_stream(FILE *, long, long); 257 258/* global buffers */ 259extern char stdinbuf[]; 260extern char *ibuf; 261extern char *ibufp; 262extern int ibufsz; 263 264/* global flags */ 265extern int isbinary; 266extern int isglobal; 267extern int modified; 268extern int mutex; 269extern int sigflags; 270 271/* global vars */ 272extern long addr_last; 273extern long current_addr; 274extern const char *errmsg; 275extern long first_addr; 276extern int lineno; 277extern long second_addr; 278extern long u_addr_last; 279extern long u_current_addr; 280extern long rows; 281extern int cols; 282extern int newline_added; 283extern int des; 284extern int scripted; 285extern int patlock; 286