ed.h revision 1.31
1 /* $NetBSD: ed.h,v 1.31 2003/04/17 02:54:07 lukem Exp $ */ 2 3 /* ed.h: type and constant definitions for the ed editor. */ 4 /* 5 * Copyright (c) 1993 Andrew Moore 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)ed.h,v 1.5 1994/02/01 00:34:39 alm Exp 30 */ 31 #include <sys/types.h> 32 #if defined(BSD) && BSD >= 199103 || defined(__386BSD__) 33 # include <sys/param.h> /* for MAXPATHLEN */ 34 #endif 35 #include <errno.h> 36 #if defined(sun) || defined(__NetBSD__) || defined(__APPLE__) 37 # include <limits.h> 38 #endif 39 #include <regex.h> 40 #include <signal.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <unistd.h> 45 46 #define ERR (-2) 47 #define EMOD (-3) 48 #define FATAL (-4) 49 50 #ifndef MAXPATHLEN 51 # define MAXPATHLEN 255 /* _POSIX_PATH_MAX */ 52 #endif 53 54 #define MINBUFSZ 512 /* minimum buffer size - must be > 0 */ 55 #define SE_MAX 30 /* max subexpressions in a regular expression */ 56 #ifdef INT_MAX 57 # define LINECHARS INT_MAX /* max chars per line */ 58 #else 59 # define LINECHARS MAXINT /* max chars per line */ 60 #endif 61 62 /* gflags */ 63 #define GLB 001 /* global command */ 64 #define GPR 002 /* print after command */ 65 #define GLS 004 /* list after command */ 66 #define GNP 010 /* enumerate after command */ 67 #define GSG 020 /* global substitute */ 68 69 typedef regex_t pattern_t; 70 71 /* Line node */ 72 typedef struct line { 73 struct line *q_forw; 74 struct line *q_back; 75 off_t seek; /* address of line in scratch buffer */ 76 int len; /* length of line */ 77 } line_t; 78 79 80 typedef struct undo { 81 82 /* type of undo nodes */ 83 #define UADD 0 84 #define UDEL 1 85 #define UMOV 2 86 #define VMOV 3 87 88 int type; /* command type */ 89 line_t *h; /* head of list */ 90 line_t *t; /* tail of list */ 91 } undo_t; 92 93 #ifndef max 94 # define max(a,b) ((a) > (b) ? (a) : (b)) 95 #endif 96 #ifndef min 97 # define min(a,b) ((a) < (b) ? (a) : (b)) 98 #endif 99 100 #define INC_MOD(l, k) ((l) + 1 > (k) ? 0 : (l) + 1) 101 #define DEC_MOD(l, k) ((l) - 1 < 0 ? (k) : (l) - 1) 102 103 /* SPL1: disable some interrupts (requires reliable signals) */ 104 #define SPL1() mutex++ 105 106 /* SPL0: enable all interrupts; check sigflags (requires reliable signals) */ 107 #define SPL0() \ 108 if (--mutex == 0) { \ 109 if (sigflags & (1 << (SIGHUP - 1))) handle_hup(SIGHUP); \ 110 if (sigflags & (1 << (SIGINT - 1))) handle_int(SIGINT); \ 111 } 112 113 /* STRTOL: convert a string to long */ 114 #define STRTOL(i, p) { \ 115 errno = 0 ; \ 116 if (((i = strtol(p, &p, 10)) == LONG_MIN || i == LONG_MAX) && \ 117 errno == ERANGE) { \ 118 sprintf(errmsg, "number out of range"); \ 119 i = 0; \ 120 return ERR; \ 121 } \ 122 } 123 124 #if defined(sun) || defined(NO_REALLOC_NULL) 125 /* REALLOC: assure at least a minimum size for buffer b */ 126 #define REALLOC(b,n,i,err) \ 127 if ((i) > (n)) { \ 128 int ti = (n); \ 129 char *ts; \ 130 SPL1(); \ 131 if ((b) != NULL) { \ 132 if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \ 133 fprintf(stderr, "%s\n", strerror(errno)); \ 134 sprintf(errmsg, "out of memory"); \ 135 SPL0(); \ 136 return err; \ 137 } \ 138 } else { \ 139 if ((ts = (char *) malloc(ti += max((i), MINBUFSZ))) == NULL) { \ 140 fprintf(stderr, "%s\n", strerror(errno)); \ 141 sprintf(errmsg, "out of memory"); \ 142 SPL0(); \ 143 return err; \ 144 } \ 145 } \ 146 (n) = ti; \ 147 (b) = ts; \ 148 SPL0(); \ 149 } 150 #else /* NO_REALLOC_NULL */ 151 /* REALLOC: assure at least a minimum size for buffer b */ 152 #define REALLOC(b,n,i,err) \ 153 if ((i) > (n)) { \ 154 int ti = (n); \ 155 char *ts; \ 156 SPL1(); \ 157 if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \ 158 fprintf(stderr, "%s\n", strerror(errno)); \ 159 sprintf(errmsg, "out of memory"); \ 160 SPL0(); \ 161 return err; \ 162 } \ 163 (n) = ti; \ 164 (b) = ts; \ 165 SPL0(); \ 166 } 167 #endif /* NO_REALLOC_NULL */ 168 169 /* REQUE: link pred before succ */ 170 #define REQUE(pred, succ) (pred)->q_forw = (succ), (succ)->q_back = (pred) 171 172 /* INSQUE: insert elem in circular queue after pred */ 173 #define INSQUE(elem, pred) \ 174 { \ 175 REQUE((elem), (pred)->q_forw); \ 176 REQUE((pred), elem); \ 177 } 178 179 /* remque: remove_lines elem from circular queue */ 180 #define REMQUE(elem) REQUE((elem)->q_back, (elem)->q_forw); 181 182 /* NUL_TO_NEWLINE: overwrite ASCII NULs with newlines */ 183 #define NUL_TO_NEWLINE(s, l) translit_text(s, l, '\0', '\n') 184 185 /* NEWLINE_TO_NUL: overwrite newlines with ASCII NULs */ 186 #define NEWLINE_TO_NUL(s, l) translit_text(s, l, '\n', '\0') 187 188 #if defined(sun) && !defined(__SVR4) 189 # define strerror(n) sys_errlist[n] 190 #endif 191 192 #ifndef __P 193 # define __P(proto) proto 194 #endif 195 196 /* Local Function Declarations */ 197 void add_line_node __P((line_t *)); 198 int append_lines __P((long)); 199 int apply_subst_template __P((char *, regmatch_t *, int, int)); 200 int build_active_list __P((int)); 201 int cbc_decode __P((char *, FILE *)); 202 int cbc_encode __P((char *, int, FILE *)); 203 int check_addr_range __P((long, long)); 204 void clear_active_list __P((void)); 205 void clear_undo_stack __P((void)); 206 int close_sbuf __P((void)); 207 int copy_lines __P((long)); 208 int delete_lines __P((long, long)); 209 void des_error __P((char *)); 210 int display_lines __P((long, long, int)); 211 line_t *dup_line_node __P((line_t *)); 212 int exec_command __P((void)); 213 long exec_global __P((int, int)); 214 void expand_des_key __P((char *, char *)); 215 int extract_addr_range __P((void)); 216 char *extract_pattern __P((int)); 217 int extract_subst_tail __P((int *, long *)); 218 char *extract_subst_template __P((void)); 219 int filter_lines __P((long, long, char *)); 220 int flush_des_file __P((FILE *)); 221 line_t *get_addressed_line_node __P((long)); 222 pattern_t *get_compiled_pattern __P((void)); 223 int get_des_char __P((FILE *)); 224 char *get_extended_line __P((int *, int)); 225 char *get_filename __P((void)); 226 int get_keyword __P((void)); 227 long get_line_node_addr __P((line_t *)); 228 long get_matching_node_addr __P((pattern_t *, int)); 229 long get_marked_node_addr __P((int)); 230 char *get_sbuf_line __P((line_t *)); 231 int get_shell_command __P((void)); 232 int get_stream_line __P((FILE *)); 233 int get_tty_line __P((void)); 234 void handle_hup __P((int)); 235 void handle_int __P((int)); 236 void handle_winch __P((int)); 237 int has_trailing_escape __P((char *, char *)); 238 int hex_to_binary __P((int, int)); 239 void init_buffers __P((void)); 240 void init_des_cipher __P((void)); 241 int is_legal_filename __P((char *)); 242 int join_lines __P((long, long)); 243 int mark_line_node __P((line_t *, int)); 244 int move_lines __P((long)); 245 line_t *next_active_node __P((void)); 246 long next_addr __P((void)); 247 int open_sbuf __P((void)); 248 char *parse_char_class __P((char *)); 249 int pop_undo_stack __P((void)); 250 undo_t *push_undo_stack __P((int, long, long)); 251 int put_des_char __P((int, FILE *)); 252 char *put_sbuf_line __P((char *)); 253 int put_stream_line __P((FILE *, char *, int)); 254 int put_tty_line __P((char *, int, long, int)); 255 void quit __P((int)); 256 long read_file __P((char *, long)); 257 long read_stream __P((FILE *, long)); 258 int search_and_replace __P((pattern_t *, int, int)); 259 int set_active_node __P((line_t *)); 260 void set_des_key __P((char *)); 261 void signal_hup __P((int)); 262 void signal_int __P((int)); 263 char *strip_escapes __P((char *)); 264 int substitute_matching_text __P((pattern_t *, line_t *, int, int)); 265 char *translit_text __P((char *, int, int, int)); 266 void unmark_line_node __P((line_t *)); 267 void unset_active_nodes __P((line_t *, line_t *)); 268 long write_file __P((char *, char *, long, long)); 269 long write_stream __P((FILE *, long, long)); 270 271 /* global buffers */ 272 extern char stdinbuf[]; 273 extern char *ibuf; 274 extern char *ibufp; 275 extern int ibufsz; 276 277 /* global flags */ 278 extern int isbinary; 279 extern int isglobal; 280 extern int modified; 281 extern int mutex; 282 extern int sigflags; 283 284 /* global vars */ 285 extern long addr_last; 286 extern long current_addr; 287 extern long first_addr; 288 extern int lineno; 289 extern long second_addr; 290 extern long rows; 291 extern int cols; 292 extern int scripted; 293 extern int ere; 294 extern int des; 295 extern int newline_added; /* io.c */ 296 extern int patlock; 297 extern char errmsg[]; /* re.c */ 298 extern long u_current_addr; /* undo.c */ 299 extern long u_addr_last; /* undo.c */ 300 #if defined(sun) && !defined(__SVR4) 301 extern char *sys_errlist[]; 302 #endif 303
Indexes created Wed Oct 01 15:09:59 GMT 2025