ed.h revision 1.35
1 /* $NetBSD: ed.h,v 1.35 2011/08/29 14:51:18 joerg 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 /* Local Function Declarations */ 193 void add_line_node(line_t *); 194 int append_lines(long); 195 int apply_subst_template(char *, regmatch_t *, int, int); 196 int build_active_list(int); 197 int check_addr_range(long, long); 198 void clear_active_list(void); 199 void clear_undo_stack(void); 200 int close_sbuf(void); 201 int copy_lines(long); 202 int delete_lines(long, long); 203 int display_lines(long, long, int); 204 line_t *dup_line_node(line_t *); 205 int exec_command(void); 206 long exec_global(int, int); 207 int extract_addr_range(void); 208 char *extract_pattern(int); 209 int extract_subst_tail(int *, long *); 210 char *extract_subst_template(void); 211 int filter_lines(long, long, char *); 212 int flush_des_file(FILE *); 213 line_t *get_addressed_line_node(long); 214 pattern_t *get_compiled_pattern(void); 215 int get_des_char(FILE *); 216 char *get_extended_line(int *, int); 217 char *get_filename(void); 218 int get_keyword(void); 219 long get_line_node_addr(line_t *); 220 long get_matching_node_addr(pattern_t *, int); 221 long get_marked_node_addr(int); 222 char *get_sbuf_line(line_t *); 223 int get_shell_command(void); 224 int get_stream_line(FILE *); 225 int get_tty_line(void); 226 __dead void handle_hup(int); 227 __dead void handle_int(int); 228 void handle_winch(int); 229 int has_trailing_escape(char *, char *); 230 void init_buffers(void); 231 void init_des_cipher(void); 232 int is_legal_filename(char *); 233 int join_lines(long, long); 234 int mark_line_node(line_t *, int); 235 int move_lines(long); 236 line_t *next_active_node(void); 237 long next_addr(void); 238 int open_sbuf(void); 239 char *parse_char_class(char *); 240 int pop_undo_stack(void); 241 undo_t *push_undo_stack(int, long, long); 242 int put_des_char(int, FILE *); 243 char *put_sbuf_line(char *); 244 int put_stream_line(FILE *, char *, int); 245 int put_tty_line(char *, int, long, int); 246 __dead void quit(int); 247 long read_file(char *, long); 248 long read_stream(FILE *, long); 249 int search_and_replace(pattern_t *, int, int); 250 int set_active_node(line_t *); 251 void signal_hup(int); 252 void signal_int(int); 253 char *strip_escapes(const char *); 254 int substitute_matching_text(pattern_t *, line_t *, int, int); 255 char *translit_text(char *, int, int, int); 256 void unmark_line_node(line_t *); 257 void unset_active_nodes(line_t *, line_t *); 258 long write_file(const char *, const char *, long, long); 259 long write_stream(FILE *, long, long); 260 261 /* global buffers */ 262 extern char stdinbuf[]; 263 extern char *ibuf; 264 extern char *ibufp; 265 extern int ibufsz; 266 267 /* global flags */ 268 extern int isbinary; 269 extern int isglobal; 270 extern int modified; 271 extern int mutex; 272 extern int sigflags; 273 274 /* global vars */ 275 extern long addr_last; 276 extern long current_addr; 277 extern long first_addr; 278 extern int lineno; 279 extern long second_addr; 280 extern long rows; 281 extern int cols; 282 extern int scripted; 283 extern int ere; 284 extern int des; 285 extern int newline_added; /* io.c */ 286 extern int patlock; 287 extern char errmsg[]; /* re.c */ 288 extern long u_current_addr; /* undo.c */ 289 extern long u_addr_last; /* undo.c */ 290 #if defined(sun) && !defined(__SVR4) 291 extern char *sys_errlist[]; 292 #endif 293
Indexes created Tue Sep 30 20:09:53 GMT 2025