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: src/bin/ed/ed.h,v 1.13.2.1 2001/08/01 02:36:03 obrien Exp $ 29 * $DragonFly: src/bin/ed/ed.h,v 1.7 2004/09/26 16:32:47 asmodai Exp $ 30 */ 31 32 #include <sys/param.h> 33 #include <errno.h> 34 #include <limits.h> 35 #include <regex.h> 36 #include <signal.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <unistd.h> 41 42 #define ERR (-2) 43 #define EMOD (-3) 44 #define FATAL (-4) 45 46 #define MINBUFSZ 512 /* minimum buffer size - must be > 0 */ 47 #define SE_MAX 30 /* max subexpressions in a regular expression */ 48 #ifdef INT_MAX 49 # define LINECHARS INT_MAX /* max chars per line */ 50 #else 51 # define LINECHARS MAXINT /* max chars per line */ 52 #endif 53 54 /* gflags */ 55 #define GLB 001 /* global command */ 56 #define GPR 002 /* print after command */ 57 #define GLS 004 /* list after command */ 58 #define GNP 010 /* enumerate after command */ 59 #define GSG 020 /* global substitute */ 60 61 typedef regex_t pattern_t; 62 63 /* Line node */ 64 typedef struct line { 65 struct line *q_forw; 66 struct line *q_back; 67 off_t seek; /* address of line in scratch buffer */ 68 int len; /* length of line */ 69 } line_t; 70 71 72 typedef struct undo { 73 74 /* type of undo nodes */ 75 #define UADD 0 76 #define UDEL 1 77 #define UMOV 2 78 #define VMOV 3 79 80 int type; /* command type */ 81 line_t *h; /* head of list */ 82 line_t *t; /* tail of list */ 83 } undo_t; 84 85 #ifndef max 86 # define max(a,b) ((a) > (b) ? (a) : (b)) 87 #endif 88 #ifndef min 89 # define min(a,b) ((a) < (b) ? (a) : (b)) 90 #endif 91 92 #define INC_MOD(l, k) ((l) + 1 > (k) ? 0 : (l) + 1) 93 #define DEC_MOD(l, k) ((l) - 1 < 0 ? (k) : (l) - 1) 94 95 /* SPL1: disable some interrupts (requires reliable signals) */ 96 #define SPL1() mutex++ 97 98 /* SPL0: enable all interrupts; check sigflags (requires reliable signals) */ 99 #define SPL0() \ 100 if (--mutex == 0) { \ 101 if (sigflags & (1 << (SIGHUP - 1))) handle_hup(SIGHUP); \ 102 if (sigflags & (1 << (SIGINT - 1))) handle_int(SIGINT); \ 103 } 104 105 /* STRTOL: convert a string to long */ 106 #define STRTOL(i, p) { \ 107 if (((i = strtol(p, &p, 10)) == LONG_MIN || i == LONG_MAX) && \ 108 errno == ERANGE) { \ 109 sprintf(errmsg, "number out of range"); \ 110 i = 0; \ 111 return ERR; \ 112 } \ 113 } 114 115 #if defined(sun) || defined(NO_REALLOC_NULL) 116 /* REALLOC: assure at least a minimum size for buffer b */ 117 #define REALLOC(b,n,i,err) \ 118 if ((i) > (n)) { \ 119 int ti = (n); \ 120 char *ts; \ 121 SPL1(); \ 122 if ((b) != NULL) { \ 123 if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \ 124 fprintf(stderr, "%s\n", strerror(errno)); \ 125 sprintf(errmsg, "out of memory"); \ 126 SPL0(); \ 127 return err; \ 128 } \ 129 } else { \ 130 if ((ts = (char *) malloc(ti += max((i), MINBUFSZ))) == NULL) { \ 131 fprintf(stderr, "%s\n", strerror(errno)); \ 132 sprintf(errmsg, "out of memory"); \ 133 SPL0(); \ 134 return err; \ 135 } \ 136 } \ 137 (n) = ti; \ 138 (b) = ts; \ 139 SPL0(); \ 140 } 141 #else /* NO_REALLOC_NULL */ 142 /* REALLOC: assure at least a minimum size for buffer b */ 143 #define REALLOC(b,n,i,err) \ 144 if ((i) > (n)) { \ 145 int ti = (n); \ 146 char *ts; \ 147 SPL1(); \ 148 if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \ 149 fprintf(stderr, "%s\n", strerror(errno)); \ 150 sprintf(errmsg, "out of memory"); \ 151 SPL0(); \ 152 return err; \ 153 } \ 154 (n) = ti; \ 155 (b) = ts; \ 156 SPL0(); \ 157 } 158 #endif /* NO_REALLOC_NULL */ 159 160 /* REQUE: link pred before succ */ 161 #define REQUE(pred, succ) (pred)->q_forw = (succ), (succ)->q_back = (pred) 162 163 /* INSQUE: insert elem in circular queue after pred */ 164 #define INSQUE(elem, pred) \ 165 { \ 166 REQUE((elem), (pred)->q_forw); \ 167 REQUE((pred), elem); \ 168 } 169 170 /* REMQUE: remove_lines elem from circular queue */ 171 #define REMQUE(elem) REQUE((elem)->q_back, (elem)->q_forw); 172 173 /* NUL_TO_NEWLINE: overwrite ASCII NULs with newlines */ 174 #define NUL_TO_NEWLINE(s, l) translit_text(s, l, '\0', '\n') 175 176 /* NEWLINE_TO_NUL: overwrite newlines with ASCII NULs */ 177 #define NEWLINE_TO_NUL(s, l) translit_text(s, l, '\n', '\0') 178 179 #ifdef sun 180 # define strerror(n) sys_errlist[n] 181 #endif 182 183 /* Local Function Declarations */ 184 void add_line_node (line_t *); 185 int append_lines (long); 186 int apply_subst_template (char *, regmatch_t *, int, int); 187 int build_active_list (int); 188 int cbc_decode (char *, FILE *); 189 int cbc_encode (char *, int, FILE *); 190 int check_addr_range (long, long); 191 void clear_active_list (void); 192 void clear_undo_stack (void); 193 int close_sbuf (void); 194 int copy_lines (long); 195 int delete_lines (long, long); 196 void des_error (const char *); 197 int display_lines (long, long, int); 198 line_t *dup_line_node (line_t *); 199 int exec_command (void); 200 long exec_global (int, int); 201 void expand_des_key (char *, char *); 202 int extract_addr_range (void); 203 char *extract_pattern (int); 204 int extract_subst_tail (int *, long *); 205 char *extract_subst_template (void); 206 int filter_lines (long, long, char *); 207 int flush_des_file (FILE *); 208 line_t *get_addressed_line_node (long); 209 pattern_t *get_compiled_pattern (void); 210 int get_des_char (FILE *); 211 char *get_extended_line (int *, int); 212 char *get_filename (void); 213 int get_keyword (void); 214 long get_line_node_addr (line_t *); 215 long get_matching_node_addr (pattern_t *, int); 216 long get_marked_node_addr (int); 217 char *get_sbuf_line (line_t *); 218 int get_shell_command (void); 219 int get_stream_line (FILE *); 220 int get_tty_line (void); 221 void handle_hup (int); 222 void handle_int (int); 223 void handle_winch (int); 224 int has_trailing_escape (char *, char *); 225 int hex_to_binary (int, int); 226 void init_buffers (void); 227 void init_des_cipher (void); 228 int is_legal_filename (char *); 229 int join_lines (long, long); 230 int mark_line_node (line_t *, int); 231 int move_lines (long); 232 line_t *next_active_node (void); 233 long next_addr (void); 234 int open_sbuf (void); 235 char *parse_char_class (char *); 236 int pop_undo_stack (void); 237 undo_t *push_undo_stack (int, long, long); 238 int put_des_char (int, FILE *); 239 char *put_sbuf_line (char *); 240 int put_stream_line (FILE *, char *, int); 241 int put_tty_line (char *, int, long, int); 242 void quit (int); 243 long read_file (char *, long); 244 long read_stream (FILE *, long); 245 int search_and_replace (pattern_t *, int, int); 246 int set_active_node (line_t *); 247 void set_des_key (char *); 248 void signal_hup (int); 249 void signal_int (int); 250 char *strip_escapes (const char *); 251 int substitute_matching_text (pattern_t *, line_t *, int, int); 252 char *translit_text (char *, int, int, int); 253 void unmark_line_node (line_t *); 254 void unset_active_nodes (line_t *, line_t *); 255 long write_file (const char *, const char *, long, long); 256 long write_stream (FILE *, long, long); 257 258 /* global buffers */ 259 extern char stdinbuf[]; 260 extern char *ibuf; 261 extern char *ibufp; 262 extern int ibufsz; 263 264 /* global flags */ 265 extern int isbinary; 266 extern int isglobal; 267 extern int modified; 268 extern int mutex; 269 extern int sigflags; 270 271 /* global vars */ 272 extern long addr_last; 273 extern long u_addr_last; 274 extern long current_addr; 275 extern long u_current_addr; 276 extern char errmsg[]; 277 extern long first_addr; 278 extern int lineno; 279 extern long second_addr; 280 #ifdef sun 281 extern char *sys_errlist[]; 282 #endif 283