| File: | src/bin/ed/main.c |
| Warning: | line 1027, column 8 Value stored to 'lp' during its initialization is never read |
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| 1 | /* $OpenBSD: main.c,v 1.68 2022/11/18 14:52:03 millert Exp $ */ |
| 2 | /* $NetBSD: main.c,v 1.3 1995/03/21 09:04:44 cgd Exp $ */ |
| 3 | |
| 4 | /* main.c: This file contains the main control and user-interface routines |
| 5 | for the ed line editor. */ |
| 6 | /*- |
| 7 | * Copyright (c) 1993 Andrew Moore, Talke Studio. |
| 8 | * All rights reserved. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 29 | * SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | * CREDITS |
| 34 | * |
| 35 | * This program is based on the editor algorithm described in |
| 36 | * Brian W. Kernighan and P. J. Plauger's book "Software Tools |
| 37 | * in Pascal," Addison-Wesley, 1981. |
| 38 | * |
| 39 | * The buffering algorithm is attributed to Rodney Ruddock of |
| 40 | * the University of Guelph, Guelph, Ontario. |
| 41 | * |
| 42 | */ |
| 43 | |
| 44 | #include <sys/ioctl.h> |
| 45 | #include <sys/stat.h> |
| 46 | #include <sys/wait.h> |
| 47 | |
| 48 | #include <ctype.h> |
| 49 | #include <err.h> |
| 50 | #include <errno(*__errno()).h> |
| 51 | #include <limits.h> |
| 52 | #include <pwd.h> |
| 53 | #include <regex.h> |
| 54 | #include <setjmp.h> |
| 55 | #include <signal.h> |
| 56 | #include <stdio.h> |
| 57 | #include <stdlib.h> |
| 58 | #include <string.h> |
| 59 | #include <unistd.h> |
| 60 | |
| 61 | #include "ed.h" |
| 62 | |
| 63 | void signal_hup(int); |
| 64 | void signal_int(int); |
| 65 | void handle_winch(int); |
| 66 | |
| 67 | static int next_addr(void); |
| 68 | static int check_addr_range(int, int); |
| 69 | static int get_matching_node_addr(regex_t *, int); |
| 70 | static char *get_filename(int); |
| 71 | static int get_shell_command(void); |
| 72 | static int append_lines(int); |
| 73 | static int join_lines(int, int); |
| 74 | static int move_lines(int); |
| 75 | static int copy_lines(int); |
| 76 | static int mark_line_node(line_t *, int); |
| 77 | static int get_marked_node_addr(int); |
| 78 | static line_t *dup_line_node(line_t *); |
| 79 | |
| 80 | sigjmp_buf env; |
| 81 | |
| 82 | /* static buffers */ |
| 83 | static char errmsg[PATH_MAX1024 + 40]; /* error message buffer */ |
| 84 | static char *shcmd; /* shell command buffer */ |
| 85 | static int shcmdsz; /* shell command buffer size */ |
| 86 | static int shcmdi; /* shell command buffer index */ |
| 87 | static char old_filename[PATH_MAX1024]; /* default filename */ |
| 88 | |
| 89 | /* global buffers */ |
| 90 | char *ibuf; /* ed command-line buffer */ |
| 91 | int ibufsz; /* ed command-line buffer size */ |
| 92 | char *ibufp; /* pointer to ed command-line buffer */ |
| 93 | |
| 94 | /* global flags */ |
| 95 | int garrulous = 0; /* if set, print all error messages */ |
| 96 | int isbinary; /* if set, buffer contains ASCII NULs */ |
| 97 | int isglobal; /* if set, doing a global command */ |
| 98 | int modified; /* if set, buffer modified since last write */ |
| 99 | int scripted = 0; /* if set, suppress diagnostics */ |
| 100 | int interactive = 0; /* if set, we are in interactive mode */ |
| 101 | |
| 102 | volatile sig_atomic_t mutex = 0; /* if set, signals set flags */ |
| 103 | volatile sig_atomic_t sighup = 0; /* if set, sighup received while mutex set */ |
| 104 | volatile sig_atomic_t sigint = 0; /* if set, sigint received while mutex set */ |
| 105 | |
| 106 | /* if set, signal handlers are enabled */ |
| 107 | volatile sig_atomic_t sigactive = 0; |
| 108 | |
| 109 | int current_addr; /* current address in editor buffer */ |
| 110 | int addr_last; /* last address in editor buffer */ |
| 111 | int lineno; /* script line number */ |
| 112 | static char *prompt; /* command-line prompt */ |
| 113 | static char *dps = "*"; /* default command-line prompt */ |
| 114 | |
| 115 | static const char usage[] = "usage: %s [-] [-s] [-p string] [file]\n"; |
| 116 | |
| 117 | static char *home; /* home directory */ |
| 118 | |
| 119 | void |
| 120 | seterrmsg(char *s) |
| 121 | { |
| 122 | strlcpy(errmsg, s, sizeof(errmsg)); |
| 123 | } |
| 124 | |
| 125 | /* ed: line editor */ |
| 126 | int |
| 127 | main(volatile int argc, char ** volatile argv) |
| 128 | { |
| 129 | int c, n; |
| 130 | int status = 0; |
| 131 | |
| 132 | if (pledge("stdio rpath wpath cpath proc exec tty", NULL((void *)0)) == -1) |
| 133 | err(1, "pledge"); |
| 134 | |
| 135 | home = getenv("HOME"); |
| 136 | |
| 137 | top: |
| 138 | while ((c = getopt(argc, argv, "p:sx")) != -1) |
| 139 | switch (c) { |
| 140 | case 'p': /* set prompt */ |
| 141 | dps = prompt = optarg; |
| 142 | break; |
| 143 | case 's': /* run script */ |
| 144 | scripted = 1; |
| 145 | break; |
| 146 | case 'x': /* use crypt */ |
| 147 | fprintf(stderr(&__sF[2]), "crypt unavailable\n?\n"); |
| 148 | break; |
| 149 | default: |
| 150 | fprintf(stderr(&__sF[2]), usage, argv[0]); |
| 151 | exit(1); |
| 152 | } |
| 153 | argv += optind; |
| 154 | argc -= optind; |
| 155 | if (argc && **argv == '-') { |
| 156 | scripted = 1; |
| 157 | if (argc > 1) { |
| 158 | optind = 1; |
| 159 | goto top; |
| 160 | } |
| 161 | argv++; |
| 162 | argc--; |
| 163 | } |
| 164 | |
| 165 | if (!(interactive = isatty(0))) { |
| 166 | struct stat sb; |
| 167 | |
| 168 | /* assert: pipes show up as fifo's when fstat'd */ |
| 169 | if (fstat(STDIN_FILENO0, &sb) || !S_ISFIFO(sb.st_mode)((sb.st_mode & 0170000) == 0010000)) { |
| 170 | if (lseek(STDIN_FILENO0, 0, SEEK_CUR1)) { |
| 171 | interactive = 1; |
| 172 | setvbuf(stdout(&__sF[1]), NULL((void *)0), _IOLBF1, 0); |
| 173 | } |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | /* assert: reliable signals! */ |
| 178 | if (isatty(STDIN_FILENO0)) { |
| 179 | handle_winch(SIGWINCH28); |
| 180 | signal(SIGWINCH28, handle_winch); |
| 181 | } |
| 182 | signal(SIGHUP1, signal_hup); |
| 183 | signal(SIGQUIT3, SIG_IGN(void (*)(int))1); |
| 184 | signal(SIGINT2, signal_int); |
| 185 | if (sigsetjmp(env, 1)) { |
| 186 | status = -1; |
| 187 | fputs("\n?\n", stdout(&__sF[1])); |
| 188 | seterrmsg("interrupt"); |
| 189 | } else { |
| 190 | init_buffers(); |
| 191 | sigactive = 1; /* enable signal handlers */ |
| 192 | if (argc && **argv) { |
| 193 | if (read_file(*argv, 0) < 0 && !interactive) |
| 194 | quit(2); |
| 195 | else if (**argv != '!') |
| 196 | strlcpy(old_filename, *argv, |
| 197 | sizeof old_filename); |
| 198 | } else if (argc) { |
| 199 | fputs("?\n", stdout(&__sF[1])); |
| 200 | if (**argv == '\0') |
| 201 | seterrmsg("invalid filename"); |
| 202 | if (!interactive) |
| 203 | quit(2); |
| 204 | } |
| 205 | } |
| 206 | for (;;) { |
| 207 | if (status < 0 && garrulous) |
| 208 | fprintf(stderr(&__sF[2]), "%s\n", errmsg); |
| 209 | if (prompt) { |
| 210 | fputs(prompt, stdout(&__sF[1])); |
| 211 | fflush(stdout(&__sF[1])); |
| 212 | } |
| 213 | if ((n = get_tty_line()) < 0) { |
| 214 | status = ERR(-2); |
| 215 | continue; |
| 216 | } else if (n == 0) { |
| 217 | if (modified && !scripted) { |
| 218 | fputs("?\n", stdout(&__sF[1])); |
| 219 | seterrmsg("warning: file modified"); |
| 220 | if (!interactive) { |
| 221 | if (garrulous) |
| 222 | fprintf(stderr(&__sF[2]), |
| 223 | "script, line %d: %s\n", |
| 224 | lineno, errmsg); |
| 225 | quit(2); |
| 226 | } |
| 227 | clearerr(stdin)(!__isthreaded ? ((void)(((&__sF[0]))->_flags &= ~ (0x0040|0x0020))) : (clearerr)((&__sF[0]))); |
| 228 | modified = 0; |
| 229 | status = EMOD(-3); |
| 230 | continue; |
| 231 | } else |
| 232 | quit(0); |
| 233 | } else if (ibuf[n - 1] != '\n') { |
| 234 | /* discard line */ |
| 235 | seterrmsg("unexpected end-of-file"); |
| 236 | clearerr(stdin)(!__isthreaded ? ((void)(((&__sF[0]))->_flags &= ~ (0x0040|0x0020))) : (clearerr)((&__sF[0]))); |
| 237 | status = ERR(-2); |
| 238 | continue; |
| 239 | } |
| 240 | isglobal = 0; |
| 241 | if ((status = extract_addr_range()) >= 0 && |
| 242 | (status = exec_command()) >= 0) |
| 243 | if (!status || (status && |
| 244 | (status = display_lines(current_addr, current_addr, |
| 245 | status)) >= 0)) |
| 246 | continue; |
| 247 | switch (status) { |
| 248 | case EOF(-1): |
| 249 | quit(0); |
| 250 | break; |
| 251 | case EMOD(-3): |
| 252 | modified = 0; |
| 253 | fputs("?\n", stdout(&__sF[1])); /* give warning */ |
| 254 | seterrmsg("warning: file modified"); |
| 255 | if (!interactive) { |
| 256 | if (garrulous) |
| 257 | fprintf(stderr(&__sF[2]), |
| 258 | "script, line %d: %s\n", |
| 259 | lineno, errmsg); |
| 260 | quit(2); |
| 261 | } |
| 262 | break; |
| 263 | case FATAL(-4): |
| 264 | if (!interactive) { |
| 265 | if (garrulous) |
| 266 | fprintf(stderr(&__sF[2]), |
| 267 | "script, line %d: %s\n", |
| 268 | lineno, errmsg); |
| 269 | } else if (garrulous) |
| 270 | fprintf(stderr(&__sF[2]), "%s\n", errmsg); |
| 271 | quit(3); |
| 272 | break; |
| 273 | default: |
| 274 | fputs("?\n", stdout(&__sF[1])); |
| 275 | if (!interactive) { |
| 276 | if (garrulous) |
| 277 | fprintf(stderr(&__sF[2]), |
| 278 | "script, line %d: %s\n", |
| 279 | lineno, errmsg); |
| 280 | quit(2); |
| 281 | } |
| 282 | break; |
| 283 | } |
| 284 | } |
| 285 | /*NOTREACHED*/ |
| 286 | } |
| 287 | |
| 288 | int first_addr, second_addr, addr_cnt; |
| 289 | |
| 290 | /* extract_addr_range: get line addresses from the command buffer until an |
| 291 | illegal address is seen; return status */ |
| 292 | int |
| 293 | extract_addr_range(void) |
| 294 | { |
| 295 | int addr; |
| 296 | |
| 297 | addr_cnt = 0; |
| 298 | first_addr = second_addr = current_addr; |
| 299 | while ((addr = next_addr()) >= 0) { |
| 300 | addr_cnt++; |
| 301 | first_addr = second_addr; |
| 302 | second_addr = addr; |
| 303 | if (*ibufp != ',' && *ibufp != ';') |
| 304 | break; |
| 305 | else if (*ibufp++ == ';') |
| 306 | current_addr = addr; |
| 307 | } |
| 308 | if ((addr_cnt = min(addr_cnt, 2)((addr_cnt) < (2) ? (addr_cnt) : (2))) == 1 || second_addr != addr) |
| 309 | first_addr = second_addr; |
| 310 | return (addr == ERR(-2)) ? ERR(-2) : 0; |
| 311 | } |
| 312 | |
| 313 | |
| 314 | #define SKIP_BLANKS()do { while (isspace((unsigned char)*ibufp) && *ibufp != '\n') ibufp++; } while (0) \ |
| 315 | do { \ |
| 316 | while (isspace((unsigned char)*ibufp) && *ibufp != '\n') \ |
| 317 | ibufp++; \ |
| 318 | } while (0) |
| 319 | |
| 320 | #define MUST_BE_FIRST()do { if (!first) { seterrmsg("invalid address"); return (-2); } } while (0) \ |
| 321 | do { \ |
| 322 | if (!first) { \ |
| 323 | seterrmsg("invalid address"); \ |
| 324 | return ERR(-2); \ |
| 325 | } \ |
| 326 | } while (0) |
| 327 | |
| 328 | |
| 329 | /* next_addr: return the next line address in the command buffer */ |
| 330 | static int |
| 331 | next_addr(void) |
| 332 | { |
| 333 | char *hd; |
| 334 | int addr = current_addr; |
| 335 | int n; |
| 336 | int first = 1; |
| 337 | int c; |
| 338 | |
| 339 | SKIP_BLANKS()do { while (isspace((unsigned char)*ibufp) && *ibufp != '\n') ibufp++; } while (0); |
| 340 | for (hd = ibufp;; first = 0) |
| 341 | switch ((c = (unsigned char)*ibufp)) { |
| 342 | case '+': |
| 343 | case '\t': |
| 344 | case ' ': |
| 345 | case '-': |
| 346 | case '^': |
| 347 | ibufp++; |
| 348 | SKIP_BLANKS()do { while (isspace((unsigned char)*ibufp) && *ibufp != '\n') ibufp++; } while (0); |
| 349 | if (isdigit((unsigned char)*ibufp)) { |
| 350 | STRTOI(n, ibufp){ long l = strtol(ibufp, &ibufp, 10); if (l <= (-0x7fffffff -1) || l >= 0x7fffffff) { seterrmsg("number out of range") ; n = 0; return (-2); } else n = (int)l; }; |
| 351 | addr += (c == '-' || c == '^') ? -n : n; |
| 352 | } else if (!isspace(c)) |
| 353 | addr += (c == '-' || c == '^') ? -1 : 1; |
| 354 | break; |
| 355 | case '0': case '1': case '2': |
| 356 | case '3': case '4': case '5': |
| 357 | case '6': case '7': case '8': case '9': |
| 358 | MUST_BE_FIRST()do { if (!first) { seterrmsg("invalid address"); return (-2); } } while (0); |
| 359 | STRTOI(addr, ibufp){ long l = strtol(ibufp, &ibufp, 10); if (l <= (-0x7fffffff -1) || l >= 0x7fffffff) { seterrmsg("number out of range") ; addr = 0; return (-2); } else addr = (int)l; }; |
| 360 | break; |
| 361 | case '.': |
| 362 | case '$': |
| 363 | MUST_BE_FIRST()do { if (!first) { seterrmsg("invalid address"); return (-2); } } while (0); |
| 364 | ibufp++; |
| 365 | addr = (c == '.') ? current_addr : addr_last; |
| 366 | break; |
| 367 | case '/': |
| 368 | case '?': |
| 369 | MUST_BE_FIRST()do { if (!first) { seterrmsg("invalid address"); return (-2); } } while (0); |
| 370 | if ((addr = get_matching_node_addr( |
| 371 | get_compiled_pattern(), c == '/')) < 0) |
| 372 | return ERR(-2); |
| 373 | else if (c == *ibufp) |
| 374 | ibufp++; |
| 375 | break; |
| 376 | case '\'': |
| 377 | MUST_BE_FIRST()do { if (!first) { seterrmsg("invalid address"); return (-2); } } while (0); |
| 378 | ibufp++; |
| 379 | if ((addr = get_marked_node_addr((unsigned char)*ibufp++)) < 0) |
| 380 | return ERR(-2); |
| 381 | break; |
| 382 | case '%': |
| 383 | case ',': |
| 384 | case ';': |
| 385 | if (first) { |
| 386 | ibufp++; |
| 387 | addr_cnt++; |
| 388 | second_addr = (c == ';') ? current_addr : 1; |
| 389 | if ((addr = next_addr()) < 0) |
| 390 | addr = addr_last; |
| 391 | break; |
| 392 | } |
| 393 | /* FALLTHROUGH */ |
| 394 | default: |
| 395 | if (ibufp == hd) |
| 396 | return EOF(-1); |
| 397 | else if (addr < 0 || addr_last < addr) { |
| 398 | seterrmsg("invalid address"); |
| 399 | return ERR(-2); |
| 400 | } else |
| 401 | return addr; |
| 402 | } |
| 403 | /* NOTREACHED */ |
| 404 | } |
| 405 | |
| 406 | |
| 407 | /* GET_THIRD_ADDR: get a legal address from the command buffer */ |
| 408 | #define GET_THIRD_ADDR(addr)do { int ol1, ol2; ol1 = first_addr; ol2 = second_addr; if (extract_addr_range () < 0) return (-2); else if (addr_cnt == 0) { seterrmsg("destination expected" ); return (-2); } else if (second_addr < 0 || addr_last < second_addr) { seterrmsg("invalid address"); return (-2); } addr = second_addr; first_addr = ol1; second_addr = ol2; } while ( 0) \ |
| 409 | do { \ |
| 410 | int ol1, ol2; \ |
| 411 | \ |
| 412 | ol1 = first_addr; \ |
| 413 | ol2 = second_addr; \ |
| 414 | if (extract_addr_range() < 0) \ |
| 415 | return ERR(-2); \ |
| 416 | else if (addr_cnt == 0) { \ |
| 417 | seterrmsg("destination expected"); \ |
| 418 | return ERR(-2); \ |
| 419 | } else if (second_addr < 0 || addr_last < second_addr) { \ |
| 420 | seterrmsg("invalid address"); \ |
| 421 | return ERR(-2); \ |
| 422 | } \ |
| 423 | addr = second_addr; \ |
| 424 | first_addr = ol1; \ |
| 425 | second_addr = ol2; \ |
| 426 | } while (0) |
| 427 | |
| 428 | |
| 429 | /* GET_COMMAND_SUFFIX: verify the command suffix in the command buffer */ |
| 430 | #define GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0) \ |
| 431 | do { \ |
| 432 | int done = 0; \ |
| 433 | do { \ |
| 434 | switch (*ibufp) { \ |
| 435 | case 'p': \ |
| 436 | gflag |= GPR002; \ |
| 437 | ibufp++; \ |
| 438 | break; \ |
| 439 | case 'l': \ |
| 440 | gflag |= GLS004; \ |
| 441 | ibufp++; \ |
| 442 | break; \ |
| 443 | case 'n': \ |
| 444 | gflag |= GNP010; \ |
| 445 | ibufp++; \ |
| 446 | break; \ |
| 447 | default: \ |
| 448 | done++; \ |
| 449 | } \ |
| 450 | } while (!done); \ |
| 451 | if (*ibufp++ != '\n') { \ |
| 452 | seterrmsg("invalid command suffix"); \ |
| 453 | return ERR(-2); \ |
| 454 | } \ |
| 455 | } while (0) |
| 456 | |
| 457 | /* sflags */ |
| 458 | #define SGG001 001 /* complement previous global substitute suffix */ |
| 459 | #define SGP002 002 /* complement previous print suffix */ |
| 460 | #define SGR004 004 /* use last regex instead of last pat */ |
| 461 | #define SGF010 010 /* repeat last substitution */ |
| 462 | |
| 463 | int patlock = 0; /* if set, pattern not freed by get_compiled_pattern() */ |
| 464 | |
| 465 | volatile sig_atomic_t rows = 22; /* scroll length: ws_row - 2 */ |
| 466 | volatile sig_atomic_t cols = 72; /* wrap column */ |
| 467 | |
| 468 | /* exec_command: execute the next command in command buffer; return print |
| 469 | request, if any */ |
| 470 | int |
| 471 | exec_command(void) |
| 472 | { |
| 473 | extern int u_current_addr; |
| 474 | extern int u_addr_last; |
| 475 | |
| 476 | static regex_t *pat = NULL((void *)0); |
| 477 | static int sgflag = 0; |
| 478 | static int sgnum = 0; |
| 479 | |
| 480 | regex_t *tpat; |
| 481 | char *fnp; |
| 482 | int gflag = 0; |
| 483 | int sflags = 0; |
| 484 | int addr = 0; |
| 485 | int n = 0; |
| 486 | int c; |
| 487 | |
| 488 | SKIP_BLANKS()do { while (isspace((unsigned char)*ibufp) && *ibufp != '\n') ibufp++; } while (0); |
| 489 | switch ((c = (unsigned char)*ibufp++)) { |
| 490 | case 'a': |
| 491 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 492 | if (!isglobal) clear_undo_stack(); |
| 493 | if (append_lines(second_addr) < 0) |
| 494 | return ERR(-2); |
| 495 | break; |
| 496 | case 'c': |
| 497 | if (check_addr_range(current_addr, current_addr) < 0) |
| 498 | return ERR(-2); |
| 499 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 500 | if (!isglobal) clear_undo_stack(); |
| 501 | if (delete_lines(first_addr, second_addr) < 0 || |
| 502 | append_lines(current_addr) < 0) |
| 503 | return ERR(-2); |
| 504 | break; |
| 505 | case 'd': |
| 506 | if (check_addr_range(current_addr, current_addr) < 0) |
| 507 | return ERR(-2); |
| 508 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 509 | if (!isglobal) clear_undo_stack(); |
| 510 | if (delete_lines(first_addr, second_addr) < 0) |
| 511 | return ERR(-2); |
| 512 | else if ((addr = INC_MOD(current_addr, addr_last)((current_addr) + 1 > (addr_last) ? 0 : (current_addr) + 1 )) != 0) |
| 513 | current_addr = addr; |
| 514 | break; |
| 515 | case 'e': |
| 516 | if (modified && !scripted) |
| 517 | return EMOD(-3); |
| 518 | /* FALLTHROUGH */ |
| 519 | case 'E': |
| 520 | if (addr_cnt > 0) { |
| 521 | seterrmsg("unexpected address"); |
| 522 | return ERR(-2); |
| 523 | } else if (!isspace((unsigned char)*ibufp)) { |
| 524 | seterrmsg("unexpected command suffix"); |
| 525 | return ERR(-2); |
| 526 | } else if ((fnp = get_filename(1)) == NULL((void *)0)) |
| 527 | return ERR(-2); |
| 528 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 529 | if (delete_lines(1, addr_last) < 0) |
| 530 | return ERR(-2); |
| 531 | clear_undo_stack(); |
| 532 | if (close_sbuf() < 0) |
| 533 | return ERR(-2); |
| 534 | else if (open_sbuf() < 0) |
| 535 | return FATAL(-4); |
| 536 | if (read_file(fnp, 0) < 0) |
| 537 | return ERR(-2); |
| 538 | clear_undo_stack(); |
| 539 | modified = 0; |
| 540 | u_current_addr = u_addr_last = -1; |
| 541 | break; |
| 542 | case 'f': |
| 543 | if (addr_cnt > 0) { |
| 544 | seterrmsg("unexpected address"); |
| 545 | return ERR(-2); |
| 546 | } else if (!isspace((unsigned char)*ibufp)) { |
| 547 | seterrmsg("unexpected command suffix"); |
| 548 | return ERR(-2); |
| 549 | } else if ((fnp = get_filename(1)) == NULL((void *)0)) |
| 550 | return ERR(-2); |
| 551 | else if (*fnp == '!') { |
| 552 | seterrmsg("invalid redirection"); |
| 553 | return ERR(-2); |
| 554 | } |
| 555 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 556 | puts(strip_escapes(fnp)); |
| 557 | break; |
| 558 | case 'g': |
| 559 | case 'v': |
| 560 | case 'G': |
| 561 | case 'V': |
| 562 | if (isglobal) { |
| 563 | seterrmsg("cannot nest global commands"); |
| 564 | return ERR(-2); |
| 565 | } else if (check_addr_range(1, addr_last) < 0) |
| 566 | return ERR(-2); |
| 567 | else if (build_active_list(c == 'g' || c == 'G') < 0) |
| 568 | return ERR(-2); |
| 569 | else if ((n = (c == 'G' || c == 'V'))) |
| 570 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 571 | isglobal++; |
| 572 | if (exec_global(n, gflag) < 0) |
| 573 | return ERR(-2); |
| 574 | break; |
| 575 | case 'h': |
| 576 | if (addr_cnt > 0) { |
| 577 | seterrmsg("unexpected address"); |
| 578 | return ERR(-2); |
| 579 | } |
| 580 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 581 | if (*errmsg) fprintf(stderr(&__sF[2]), "%s\n", errmsg); |
| 582 | break; |
| 583 | case 'H': |
| 584 | if (addr_cnt > 0) { |
| 585 | seterrmsg("unexpected address"); |
| 586 | return ERR(-2); |
| 587 | } |
| 588 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 589 | if ((garrulous = 1 - garrulous) && *errmsg) |
| 590 | fprintf(stderr(&__sF[2]), "%s\n", errmsg); |
| 591 | break; |
| 592 | case 'i': |
| 593 | if (second_addr == 0) { |
| 594 | second_addr = 1; |
| 595 | } |
| 596 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 597 | if (!isglobal) clear_undo_stack(); |
| 598 | if (append_lines(second_addr - 1) < 0) |
| 599 | return ERR(-2); |
| 600 | break; |
| 601 | case 'j': |
| 602 | if (check_addr_range(current_addr, current_addr + 1) < 0) |
| 603 | return ERR(-2); |
| 604 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 605 | if (!isglobal) clear_undo_stack(); |
| 606 | if (first_addr != second_addr && |
| 607 | join_lines(first_addr, second_addr) < 0) |
| 608 | return ERR(-2); |
| 609 | break; |
| 610 | case 'k': |
| 611 | c = (unsigned char)*ibufp++; |
| 612 | if (second_addr == 0) { |
| 613 | seterrmsg("invalid address"); |
| 614 | return ERR(-2); |
| 615 | } |
| 616 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 617 | if (mark_line_node(get_addressed_line_node(second_addr), c) < 0) |
| 618 | return ERR(-2); |
| 619 | break; |
| 620 | case 'l': |
| 621 | if (check_addr_range(current_addr, current_addr) < 0) |
| 622 | return ERR(-2); |
| 623 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 624 | if (display_lines(first_addr, second_addr, gflag | GLS004) < 0) |
| 625 | return ERR(-2); |
| 626 | gflag = 0; |
| 627 | break; |
| 628 | case 'm': |
| 629 | if (check_addr_range(current_addr, current_addr) < 0) |
| 630 | return ERR(-2); |
| 631 | GET_THIRD_ADDR(addr)do { int ol1, ol2; ol1 = first_addr; ol2 = second_addr; if (extract_addr_range () < 0) return (-2); else if (addr_cnt == 0) { seterrmsg("destination expected" ); return (-2); } else if (second_addr < 0 || addr_last < second_addr) { seterrmsg("invalid address"); return (-2); } addr = second_addr; first_addr = ol1; second_addr = ol2; } while ( 0); |
| 632 | if (first_addr <= addr && addr < second_addr) { |
| 633 | seterrmsg("invalid destination"); |
| 634 | return ERR(-2); |
| 635 | } |
| 636 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 637 | if (!isglobal) clear_undo_stack(); |
| 638 | if (move_lines(addr) < 0) |
| 639 | return ERR(-2); |
| 640 | break; |
| 641 | case 'n': |
| 642 | if (check_addr_range(current_addr, current_addr) < 0) |
| 643 | return ERR(-2); |
| 644 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 645 | if (display_lines(first_addr, second_addr, gflag | GNP010) < 0) |
| 646 | return ERR(-2); |
| 647 | gflag = 0; |
| 648 | break; |
| 649 | case 'p': |
| 650 | if (check_addr_range(current_addr, current_addr) < 0) |
| 651 | return ERR(-2); |
| 652 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 653 | if (display_lines(first_addr, second_addr, gflag | GPR002) < 0) |
| 654 | return ERR(-2); |
| 655 | gflag = 0; |
| 656 | break; |
| 657 | case 'P': |
| 658 | if (addr_cnt > 0) { |
| 659 | seterrmsg("unexpected address"); |
| 660 | return ERR(-2); |
| 661 | } |
| 662 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 663 | prompt = prompt ? NULL((void *)0) : optarg ? optarg : dps; |
| 664 | break; |
| 665 | case 'q': |
| 666 | case 'Q': |
| 667 | if (addr_cnt > 0) { |
| 668 | seterrmsg("unexpected address"); |
| 669 | return ERR(-2); |
| 670 | } |
| 671 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 672 | gflag = (modified && !scripted && c == 'q') ? EMOD(-3) : EOF(-1); |
| 673 | break; |
| 674 | case 'r': |
| 675 | if (!isspace((unsigned char)*ibufp)) { |
| 676 | seterrmsg("unexpected command suffix"); |
| 677 | return ERR(-2); |
| 678 | } else if (addr_cnt == 0) |
| 679 | second_addr = addr_last; |
| 680 | if ((fnp = get_filename(0)) == NULL((void *)0)) |
| 681 | return ERR(-2); |
| 682 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 683 | if (!isglobal) clear_undo_stack(); |
| 684 | if ((addr = read_file(fnp, second_addr)) < 0) |
| 685 | return ERR(-2); |
| 686 | else if (addr) |
| 687 | modified = 1; |
| 688 | break; |
| 689 | case 's': |
| 690 | do { |
| 691 | switch (*ibufp) { |
| 692 | case '\n': |
| 693 | sflags |=SGF010; |
| 694 | break; |
| 695 | case 'g': |
| 696 | sflags |= SGG001; |
| 697 | ibufp++; |
| 698 | break; |
| 699 | case 'p': |
| 700 | sflags |= SGP002; |
| 701 | ibufp++; |
| 702 | break; |
| 703 | case 'r': |
| 704 | sflags |= SGR004; |
| 705 | ibufp++; |
| 706 | break; |
| 707 | case '0': case '1': case '2': case '3': case '4': |
| 708 | case '5': case '6': case '7': case '8': case '9': |
| 709 | STRTOI(sgnum, ibufp){ long l = strtol(ibufp, &ibufp, 10); if (l <= (-0x7fffffff -1) || l >= 0x7fffffff) { seterrmsg("number out of range") ; sgnum = 0; return (-2); } else sgnum = (int)l; }; |
| 710 | sflags |= SGF010; |
| 711 | sgflag &= ~GSG020; /* override GSG */ |
| 712 | break; |
| 713 | default: |
| 714 | if (sflags) { |
| 715 | seterrmsg("invalid command suffix"); |
| 716 | return ERR(-2); |
| 717 | } |
| 718 | } |
| 719 | } while (sflags && *ibufp != '\n'); |
| 720 | if (sflags && !pat) { |
| 721 | seterrmsg("no previous substitution"); |
| 722 | return ERR(-2); |
| 723 | } else if (sflags & SGG001) |
| 724 | sgnum = 0; /* override numeric arg */ |
| 725 | if (*ibufp != '\n' && *(ibufp + 1) == '\n') { |
| 726 | seterrmsg("invalid pattern delimiter"); |
| 727 | return ERR(-2); |
| 728 | } |
| 729 | tpat = pat; |
| 730 | SPL1()mutex++; |
| 731 | if ((!sflags || (sflags & SGR004)) && |
| 732 | (tpat = get_compiled_pattern()) == NULL((void *)0)) { |
| 733 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 734 | return ERR(-2); |
| 735 | } else if (tpat != pat) { |
| 736 | if (pat) { |
| 737 | regfree(pat); |
| 738 | free(pat); |
| 739 | } |
| 740 | pat = tpat; |
| 741 | patlock = 1; /* reserve pattern */ |
| 742 | } |
| 743 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 744 | if (!sflags && extract_subst_tail(&sgflag, &sgnum) < 0) |
| 745 | return ERR(-2); |
| 746 | else if (isglobal) |
| 747 | sgflag |= GLB001; |
| 748 | else |
| 749 | sgflag &= ~GLB001; |
| 750 | if (sflags & SGG001) |
| 751 | sgflag ^= GSG020; |
| 752 | if (sflags & SGP002) { |
| 753 | sgflag ^= GPR002; |
| 754 | sgflag &= ~(GLS004 | GNP010); |
| 755 | } |
| 756 | do { |
| 757 | switch (*ibufp) { |
| 758 | case 'p': |
| 759 | sgflag |= GPR002; |
| 760 | ibufp++; |
| 761 | break; |
| 762 | case 'l': |
| 763 | sgflag |= GLS004; |
| 764 | ibufp++; |
| 765 | break; |
| 766 | case 'n': |
| 767 | sgflag |= GNP010; |
| 768 | ibufp++; |
| 769 | break; |
| 770 | default: |
| 771 | n++; |
| 772 | } |
| 773 | } while (!n); |
| 774 | if (check_addr_range(current_addr, current_addr) < 0) |
| 775 | return ERR(-2); |
| 776 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 777 | if (!isglobal) clear_undo_stack(); |
| 778 | if (search_and_replace(pat, sgflag, sgnum) < 0) |
| 779 | return ERR(-2); |
| 780 | break; |
| 781 | case 't': |
| 782 | if (check_addr_range(current_addr, current_addr) < 0) |
| 783 | return ERR(-2); |
| 784 | GET_THIRD_ADDR(addr)do { int ol1, ol2; ol1 = first_addr; ol2 = second_addr; if (extract_addr_range () < 0) return (-2); else if (addr_cnt == 0) { seterrmsg("destination expected" ); return (-2); } else if (second_addr < 0 || addr_last < second_addr) { seterrmsg("invalid address"); return (-2); } addr = second_addr; first_addr = ol1; second_addr = ol2; } while ( 0); |
| 785 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 786 | if (!isglobal) clear_undo_stack(); |
| 787 | if (copy_lines(addr) < 0) |
| 788 | return ERR(-2); |
| 789 | break; |
| 790 | case 'u': |
| 791 | if (addr_cnt > 0) { |
| 792 | seterrmsg("unexpected address"); |
| 793 | return ERR(-2); |
| 794 | } |
| 795 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 796 | if (pop_undo_stack() < 0) |
| 797 | return ERR(-2); |
| 798 | break; |
| 799 | case 'w': |
| 800 | case 'W': |
| 801 | if ((n = *ibufp) == 'q' || n == 'Q') { |
| 802 | gflag = EOF(-1); |
| 803 | ibufp++; |
| 804 | } |
| 805 | if (!isspace((unsigned char)*ibufp)) { |
| 806 | seterrmsg("unexpected command suffix"); |
| 807 | return ERR(-2); |
| 808 | } else if ((fnp = get_filename(0)) == NULL((void *)0)) |
| 809 | return ERR(-2); |
| 810 | if (addr_cnt == 0 && !addr_last) |
| 811 | first_addr = second_addr = 0; |
| 812 | else if (check_addr_range(1, addr_last) < 0) |
| 813 | return ERR(-2); |
| 814 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 815 | if ((addr = write_file(fnp, (c == 'W') ? "a" : "w", |
| 816 | first_addr, second_addr)) < 0) |
| 817 | return ERR(-2); |
| 818 | else if (addr == addr_last && *fnp != '!') |
| 819 | modified = 0; |
| 820 | else if (modified && !scripted && n == 'q') |
| 821 | gflag = EMOD(-3); |
| 822 | break; |
| 823 | case 'x': |
| 824 | if (addr_cnt > 0) { |
| 825 | seterrmsg("unexpected address"); |
| 826 | return ERR(-2); |
| 827 | } |
| 828 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 829 | seterrmsg("crypt unavailable"); |
| 830 | return ERR(-2); |
| 831 | case 'z': |
| 832 | first_addr = 1; |
| 833 | if (check_addr_range(first_addr, current_addr + 1) < 0) |
| 834 | return ERR(-2); |
| 835 | else if ('0' < *ibufp && *ibufp <= '9') |
| 836 | STRTOI(rows, ibufp){ long l = strtol(ibufp, &ibufp, 10); if (l <= (-0x7fffffff -1) || l >= 0x7fffffff) { seterrmsg("number out of range") ; rows = 0; return (-2); } else rows = (int)l; }; |
| 837 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 838 | if (display_lines(second_addr, min(addr_last,((addr_last) < (second_addr + rows) ? (addr_last) : (second_addr + rows)) |
| 839 | second_addr + rows)((addr_last) < (second_addr + rows) ? (addr_last) : (second_addr + rows)), gflag) < 0) |
| 840 | return ERR(-2); |
| 841 | gflag = 0; |
| 842 | break; |
| 843 | case '=': |
| 844 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 845 | printf("%d\n", addr_cnt ? second_addr : addr_last); |
| 846 | break; |
| 847 | case '!': |
| 848 | if (addr_cnt > 0) { |
| 849 | seterrmsg("unexpected address"); |
| 850 | return ERR(-2); |
| 851 | } else if ((sflags = get_shell_command()) < 0) |
| 852 | return ERR(-2); |
| 853 | GET_COMMAND_SUFFIX()do { int done = 0; do { switch (*ibufp) { case 'p': gflag |= 002 ; ibufp++; break; case 'l': gflag |= 004; ibufp++; break; case 'n': gflag |= 010; ibufp++; break; default: done++; } } while (!done); if (*ibufp++ != '\n') { seterrmsg("invalid command suffix" ); return (-2); } } while (0); |
| 854 | if (sflags) printf("%s\n", shcmd + 1); |
| 855 | fflush(NULL((void *)0)); /* flush any buffered I/O */ |
| 856 | system(shcmd + 1); |
| 857 | if (!scripted) printf("!\n"); |
| 858 | break; |
| 859 | case '\n': |
| 860 | first_addr = 1; |
| 861 | if (check_addr_range(first_addr, current_addr + 1) < 0 |
| 862 | || display_lines(second_addr, second_addr, 0) < 0) |
| 863 | return ERR(-2); |
| 864 | break; |
| 865 | default: |
| 866 | seterrmsg("unknown command"); |
| 867 | return ERR(-2); |
| 868 | } |
| 869 | return gflag; |
| 870 | } |
| 871 | |
| 872 | |
| 873 | /* check_addr_range: return status of address range check */ |
| 874 | static int |
| 875 | check_addr_range(int n, int m) |
| 876 | { |
| 877 | if (addr_cnt == 0) { |
| 878 | first_addr = n; |
| 879 | second_addr = m; |
| 880 | } |
| 881 | if (first_addr > second_addr || 1 > first_addr || |
| 882 | second_addr > addr_last) { |
| 883 | seterrmsg("invalid address"); |
| 884 | return ERR(-2); |
| 885 | } |
| 886 | return 0; |
| 887 | } |
| 888 | |
| 889 | |
| 890 | /* get_matching_node_addr: return the address of the next line matching a |
| 891 | pattern in a given direction. wrap around begin/end of editor buffer if |
| 892 | necessary */ |
| 893 | static int |
| 894 | get_matching_node_addr(regex_t *pat, int dir) |
| 895 | { |
| 896 | char *s; |
| 897 | int n = current_addr; |
| 898 | line_t *lp; |
| 899 | |
| 900 | if (!pat) return ERR(-2); |
| 901 | do { |
| 902 | if ((n = dir ? INC_MOD(n, addr_last)((n) + 1 > (addr_last) ? 0 : (n) + 1) : DEC_MOD(n, addr_last)((n) - 1 < 0 ? (addr_last) : (n) - 1))) { |
| 903 | lp = get_addressed_line_node(n); |
| 904 | if ((s = get_sbuf_line(lp)) == NULL((void *)0)) |
| 905 | return ERR(-2); |
| 906 | if (isbinary) |
| 907 | NUL_TO_NEWLINE(s, lp->len)translit_text(s, lp->len, '\0', '\n'); |
| 908 | if (!regexec(pat, s, 0, NULL((void *)0), 0)) |
| 909 | return n; |
| 910 | } |
| 911 | } while (n != current_addr); |
| 912 | seterrmsg("no match"); |
| 913 | return ERR(-2); |
| 914 | } |
| 915 | |
| 916 | |
| 917 | /* get_filename: return pointer to copy of filename in the command buffer */ |
| 918 | static char * |
| 919 | get_filename(int save) |
| 920 | { |
| 921 | static char filename[PATH_MAX1024]; |
| 922 | char *p; |
| 923 | int n; |
| 924 | |
| 925 | if (*ibufp != '\n') { |
| 926 | SKIP_BLANKS()do { while (isspace((unsigned char)*ibufp) && *ibufp != '\n') ibufp++; } while (0); |
| 927 | if (*ibufp == '\n') { |
| 928 | seterrmsg("invalid filename"); |
| 929 | return NULL((void *)0); |
| 930 | } else if ((ibufp = get_extended_line(&n, 1)) == NULL((void *)0)) |
| 931 | return NULL((void *)0); |
| 932 | else if (*ibufp == '!') { |
| 933 | ibufp++; |
| 934 | if ((n = get_shell_command()) < 0) |
| 935 | return NULL((void *)0); |
| 936 | if (n) printf("%s\n", shcmd + 1); |
| 937 | return shcmd; |
| 938 | } else if (n >= PATH_MAX1024 - 1) { |
| 939 | seterrmsg("filename too long"); |
| 940 | return NULL((void *)0); |
| 941 | } |
| 942 | } else { |
| 943 | if (*old_filename == '\0') { |
| 944 | seterrmsg("no current filename"); |
| 945 | return NULL((void *)0); |
| 946 | } |
| 947 | return old_filename; |
| 948 | } |
| 949 | |
| 950 | p = save ? old_filename : *old_filename ? filename : old_filename; |
| 951 | for (n = 0; *ibufp != '\n';) |
| 952 | p[n++] = *ibufp++; |
| 953 | p[n] = '\0'; |
| 954 | return p; |
| 955 | } |
| 956 | |
| 957 | |
| 958 | /* get_shell_command: read a shell command from stdin; return substitution |
| 959 | status */ |
| 960 | static int |
| 961 | get_shell_command(void) |
| 962 | { |
| 963 | static char *buf = NULL((void *)0); |
| 964 | static int n = 0; |
| 965 | |
| 966 | char *s; /* substitution char pointer */ |
| 967 | int i = 0; |
| 968 | int j = 0; |
| 969 | |
| 970 | if ((s = ibufp = get_extended_line(&j, 1)) == NULL((void *)0)) |
| 971 | return ERR(-2); |
| 972 | REALLOC(buf, n, j + 1, ERR)if ((j + 1) > (n)) { int ti = (n); char *ts; mutex++; if ( (ts = realloc((buf), ti += (((j + 1)) > (512) ? ((j + 1)) : (512)))) == ((void *)0)) { perror(((void *)0)); seterrmsg("out of memory" ); do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); return (-2); } (n) = ti; (buf ) = ts; do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint) handle_int(2); } } while (0); }; |
| 973 | buf[i++] = '!'; /* prefix command w/ bang */ |
| 974 | while (*ibufp != '\n') |
| 975 | switch (*ibufp) { |
| 976 | default: |
| 977 | REALLOC(buf, n, i + 2, ERR)if ((i + 2) > (n)) { int ti = (n); char *ts; mutex++; if ( (ts = realloc((buf), ti += (((i + 2)) > (512) ? ((i + 2)) : (512)))) == ((void *)0)) { perror(((void *)0)); seterrmsg("out of memory" ); do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); return (-2); } (n) = ti; (buf ) = ts; do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint) handle_int(2); } } while (0); }; |
| 978 | buf[i++] = *ibufp; |
| 979 | if (*ibufp++ == '\\') |
| 980 | buf[i++] = *ibufp++; |
| 981 | break; |
| 982 | case '!': |
| 983 | if (s != ibufp) { |
| 984 | REALLOC(buf, n, i + 1, ERR)if ((i + 1) > (n)) { int ti = (n); char *ts; mutex++; if ( (ts = realloc((buf), ti += (((i + 1)) > (512) ? ((i + 1)) : (512)))) == ((void *)0)) { perror(((void *)0)); seterrmsg("out of memory" ); do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); return (-2); } (n) = ti; (buf ) = ts; do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint) handle_int(2); } } while (0); }; |
| 985 | buf[i++] = *ibufp++; |
| 986 | } |
| 987 | else if (shcmd == NULL((void *)0)) |
| 988 | { |
| 989 | seterrmsg("no previous command"); |
| 990 | return ERR(-2); |
| 991 | } else { |
| 992 | REALLOC(buf, n, i + shcmdi, ERR)if ((i + shcmdi) > (n)) { int ti = (n); char *ts; mutex++; if ((ts = realloc((buf), ti += (((i + shcmdi)) > (512) ? ( (i + shcmdi)) : (512)))) == ((void *)0)) { perror(((void *)0) ); seterrmsg("out of memory"); do { if (--mutex == 0) { if (sighup ) handle_hup(1); if (sigint) handle_int(2); } } while (0); return (-2); } (n) = ti; (buf) = ts; do { if (--mutex == 0) { if (sighup ) handle_hup(1); if (sigint) handle_int(2); } } while (0); }; |
| 993 | for (s = shcmd + 1; s < shcmd + shcmdi;) |
| 994 | buf[i++] = *s++; |
| 995 | s = ibufp++; |
| 996 | } |
| 997 | break; |
| 998 | case '%': |
| 999 | if (*old_filename == '\0') { |
| 1000 | seterrmsg("no current filename"); |
| 1001 | return ERR(-2); |
| 1002 | } |
| 1003 | j = strlen(s = strip_escapes(old_filename)); |
| 1004 | REALLOC(buf, n, i + j, ERR)if ((i + j) > (n)) { int ti = (n); char *ts; mutex++; if ( (ts = realloc((buf), ti += (((i + j)) > (512) ? ((i + j)) : (512)))) == ((void *)0)) { perror(((void *)0)); seterrmsg("out of memory" ); do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); return (-2); } (n) = ti; (buf ) = ts; do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint) handle_int(2); } } while (0); }; |
| 1005 | while (j--) |
| 1006 | buf[i++] = *s++; |
| 1007 | s = ibufp++; |
| 1008 | break; |
| 1009 | } |
| 1010 | if (i == 1) { |
| 1011 | seterrmsg("no command"); |
| 1012 | return ERR(-2); |
| 1013 | } |
| 1014 | REALLOC(shcmd, shcmdsz, i + 1, ERR)if ((i + 1) > (shcmdsz)) { int ti = (shcmdsz); char *ts; mutex ++; if ((ts = realloc((shcmd), ti += (((i + 1)) > (512) ? ( (i + 1)) : (512)))) == ((void *)0)) { perror(((void *)0)); seterrmsg ("out of memory"); do { if (--mutex == 0) { if (sighup) handle_hup (1); if (sigint) handle_int(2); } } while (0); return (-2); } (shcmdsz) = ti; (shcmd) = ts; do { if (--mutex == 0) { if (sighup ) handle_hup(1); if (sigint) handle_int(2); } } while (0); }; |
| 1015 | memcpy(shcmd, buf, i); |
| 1016 | shcmd[shcmdi = i] = '\0'; |
| 1017 | return *s == '!' || *s == '%'; |
| 1018 | } |
| 1019 | |
| 1020 | |
| 1021 | /* append_lines: insert text from stdin to after line n; stop when either a |
| 1022 | single period is read or EOF; return status */ |
| 1023 | static int |
| 1024 | append_lines(int n) |
| 1025 | { |
| 1026 | int l; |
| 1027 | char *lp = ibuf; |
Value stored to 'lp' during its initialization is never read | |
| 1028 | char *eot; |
| 1029 | undo_t *up = NULL((void *)0); |
| 1030 | |
| 1031 | for (current_addr = n;;) { |
| 1032 | if (!isglobal) { |
| 1033 | if ((l = get_tty_line()) < 0) |
| 1034 | return ERR(-2); |
| 1035 | else if (l == 0 || ibuf[l - 1] != '\n') { |
| 1036 | clearerr(stdin)(!__isthreaded ? ((void)(((&__sF[0]))->_flags &= ~ (0x0040|0x0020))) : (clearerr)((&__sF[0]))); |
| 1037 | return l ? EOF(-1) : 0; |
| 1038 | } |
| 1039 | lp = ibuf; |
| 1040 | } else if (*(lp = ibufp) == '\0') |
| 1041 | return 0; |
| 1042 | else { |
| 1043 | while (*ibufp++ != '\n') |
| 1044 | ; |
| 1045 | l = ibufp - lp; |
| 1046 | } |
| 1047 | if (l == 2 && lp[0] == '.' && lp[1] == '\n') { |
| 1048 | return 0; |
| 1049 | } |
| 1050 | eot = lp + l; |
| 1051 | SPL1()mutex++; |
| 1052 | do { |
| 1053 | if ((lp = put_sbuf_line(lp)) == NULL((void *)0)) { |
| 1054 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1055 | return ERR(-2); |
| 1056 | } else if (up) |
| 1057 | up->t = get_addressed_line_node(current_addr); |
| 1058 | else if ((up = push_undo_stack(UADD0, current_addr, |
| 1059 | current_addr)) == NULL((void *)0)) { |
| 1060 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1061 | return ERR(-2); |
| 1062 | } |
| 1063 | } while (lp != eot); |
| 1064 | modified = 1; |
| 1065 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1066 | } |
| 1067 | /* NOTREACHED */ |
| 1068 | } |
| 1069 | |
| 1070 | |
| 1071 | /* join_lines: replace a range of lines with the joined text of those lines */ |
| 1072 | static int |
| 1073 | join_lines(int from, int to) |
| 1074 | { |
| 1075 | static char *buf = NULL((void *)0); |
| 1076 | static int n; |
| 1077 | |
| 1078 | char *s; |
| 1079 | int size = 0; |
| 1080 | line_t *bp, *ep; |
| 1081 | |
| 1082 | ep = get_addressed_line_node(INC_MOD(to, addr_last)((to) + 1 > (addr_last) ? 0 : (to) + 1)); |
| 1083 | bp = get_addressed_line_node(from); |
| 1084 | for (; bp != ep; bp = bp->q_forw) { |
| 1085 | if ((s = get_sbuf_line(bp)) == NULL((void *)0)) |
| 1086 | return ERR(-2); |
| 1087 | REALLOC(buf, n, size + bp->len, ERR)if ((size + bp->len) > (n)) { int ti = (n); char *ts; mutex ++; if ((ts = realloc((buf), ti += (((size + bp->len)) > (512) ? ((size + bp->len)) : (512)))) == ((void *)0)) { perror (((void *)0)); seterrmsg("out of memory"); do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint) handle_int(2); } } while (0); return (-2); } (n) = ti; (buf) = ts; do { if (-- mutex == 0) { if (sighup) handle_hup(1); if (sigint) handle_int (2); } } while (0); }; |
| 1088 | memcpy(buf + size, s, bp->len); |
| 1089 | size += bp->len; |
| 1090 | } |
| 1091 | REALLOC(buf, n, size + 2, ERR)if ((size + 2) > (n)) { int ti = (n); char *ts; mutex++; if ((ts = realloc((buf), ti += (((size + 2)) > (512) ? ((size + 2)) : (512)))) == ((void *)0)) { perror(((void *)0)); seterrmsg ("out of memory"); do { if (--mutex == 0) { if (sighup) handle_hup (1); if (sigint) handle_int(2); } } while (0); return (-2); } (n) = ti; (buf) = ts; do { if (--mutex == 0) { if (sighup) handle_hup (1); if (sigint) handle_int(2); } } while (0); }; |
| 1092 | memcpy(buf + size, "\n", 2); |
| 1093 | if (delete_lines(from, to) < 0) |
| 1094 | return ERR(-2); |
| 1095 | current_addr = from - 1; |
| 1096 | SPL1()mutex++; |
| 1097 | if (put_sbuf_line(buf) == NULL((void *)0) || |
| 1098 | push_undo_stack(UADD0, current_addr, current_addr) == NULL((void *)0)) { |
| 1099 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1100 | return ERR(-2); |
| 1101 | } |
| 1102 | modified = 1; |
| 1103 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1104 | return 0; |
| 1105 | } |
| 1106 | |
| 1107 | |
| 1108 | /* move_lines: move a range of lines */ |
| 1109 | static int |
| 1110 | move_lines(int addr) |
| 1111 | { |
| 1112 | line_t *b1, *a1, *b2, *a2; |
| 1113 | int n = INC_MOD(second_addr, addr_last)((second_addr) + 1 > (addr_last) ? 0 : (second_addr) + 1); |
| 1114 | int p = first_addr - 1; |
| 1115 | int done = (addr == first_addr - 1 || addr == second_addr); |
| 1116 | |
| 1117 | SPL1()mutex++; |
| 1118 | if (done) { |
| 1119 | a2 = get_addressed_line_node(n); |
| 1120 | b2 = get_addressed_line_node(p); |
| 1121 | current_addr = second_addr; |
| 1122 | } else if (push_undo_stack(UMOV2, p, n) == NULL((void *)0) || |
| 1123 | push_undo_stack(UMOV2, addr, INC_MOD(addr, addr_last)((addr) + 1 > (addr_last) ? 0 : (addr) + 1)) == NULL((void *)0)) { |
| 1124 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1125 | return ERR(-2); |
| 1126 | } else { |
| 1127 | a1 = get_addressed_line_node(n); |
| 1128 | if (addr < first_addr) { |
| 1129 | b1 = get_addressed_line_node(p); |
| 1130 | b2 = get_addressed_line_node(addr); |
| 1131 | /* this get_addressed_line_node last! */ |
| 1132 | } else { |
| 1133 | b2 = get_addressed_line_node(addr); |
| 1134 | b1 = get_addressed_line_node(p); |
| 1135 | /* this get_addressed_line_node last! */ |
| 1136 | } |
| 1137 | a2 = b2->q_forw; |
| 1138 | REQUE(b2, b1->q_forw)(b2)->q_forw = (b1->q_forw), (b1->q_forw)->q_back = (b2); |
| 1139 | REQUE(a1->q_back, a2)(a1->q_back)->q_forw = (a2), (a2)->q_back = (a1-> q_back); |
| 1140 | REQUE(b1, a1)(b1)->q_forw = (a1), (a1)->q_back = (b1); |
| 1141 | current_addr = addr + ((addr < first_addr) ? |
| 1142 | second_addr - first_addr + 1 : 0); |
| 1143 | } |
| 1144 | if (isglobal) |
| 1145 | unset_active_nodes(b2->q_forw, a2); |
| 1146 | modified = 1; |
| 1147 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1148 | return 0; |
| 1149 | } |
| 1150 | |
| 1151 | |
| 1152 | /* copy_lines: copy a range of lines; return status */ |
| 1153 | static int |
| 1154 | copy_lines(int addr) |
| 1155 | { |
| 1156 | line_t *lp, *np = get_addressed_line_node(first_addr); |
| 1157 | undo_t *up = NULL((void *)0); |
| 1158 | int n = second_addr - first_addr + 1; |
| 1159 | int m = 0; |
| 1160 | |
| 1161 | current_addr = addr; |
| 1162 | if (first_addr <= addr && addr < second_addr) { |
| 1163 | n = addr - first_addr + 1; |
| 1164 | m = second_addr - addr; |
| 1165 | } |
| 1166 | for (; n > 0; n=m, m=0, np = get_addressed_line_node(current_addr + 1)) |
| 1167 | for (; n-- > 0; np = np->q_forw) { |
| 1168 | SPL1()mutex++; |
| 1169 | if ((lp = dup_line_node(np)) == NULL((void *)0)) { |
| 1170 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1171 | return ERR(-2); |
| 1172 | } |
| 1173 | add_line_node(lp); |
| 1174 | if (up) |
| 1175 | up->t = lp; |
| 1176 | else if ((up = push_undo_stack(UADD0, current_addr, |
| 1177 | current_addr)) == NULL((void *)0)) { |
| 1178 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1179 | return ERR(-2); |
| 1180 | } |
| 1181 | modified = 1; |
| 1182 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1183 | } |
| 1184 | return 0; |
| 1185 | } |
| 1186 | |
| 1187 | |
| 1188 | /* delete_lines: delete a range of lines */ |
| 1189 | int |
| 1190 | delete_lines(int from, int to) |
| 1191 | { |
| 1192 | line_t *n, *p; |
| 1193 | |
| 1194 | SPL1()mutex++; |
| 1195 | if (push_undo_stack(UDEL1, from, to) == NULL((void *)0)) { |
| 1196 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1197 | return ERR(-2); |
| 1198 | } |
| 1199 | n = get_addressed_line_node(INC_MOD(to, addr_last)((to) + 1 > (addr_last) ? 0 : (to) + 1)); |
| 1200 | p = get_addressed_line_node(from - 1); |
| 1201 | /* this get_addressed_line_node last! */ |
| 1202 | if (isglobal) |
| 1203 | unset_active_nodes(p->q_forw, n); |
| 1204 | REQUE(p, n)(p)->q_forw = (n), (n)->q_back = (p); |
| 1205 | addr_last -= to - from + 1; |
| 1206 | current_addr = from - 1; |
| 1207 | modified = 1; |
| 1208 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); |
| 1209 | return 0; |
| 1210 | } |
| 1211 | |
| 1212 | |
| 1213 | /* display_lines: print a range of lines to stdout */ |
| 1214 | int |
| 1215 | display_lines(int from, int to, int gflag) |
| 1216 | { |
| 1217 | line_t *bp; |
| 1218 | line_t *ep; |
| 1219 | char *s; |
| 1220 | |
| 1221 | if (!from) { |
| 1222 | seterrmsg("invalid address"); |
| 1223 | return ERR(-2); |
| 1224 | } |
| 1225 | ep = get_addressed_line_node(INC_MOD(to, addr_last)((to) + 1 > (addr_last) ? 0 : (to) + 1)); |
| 1226 | bp = get_addressed_line_node(from); |
| 1227 | for (; bp != ep; bp = bp->q_forw) { |
| 1228 | if ((s = get_sbuf_line(bp)) == NULL((void *)0)) |
| 1229 | return ERR(-2); |
| 1230 | if (put_tty_line(s, bp->len, current_addr = from++, gflag) < 0) |
| 1231 | return ERR(-2); |
| 1232 | } |
| 1233 | return 0; |
| 1234 | } |
| 1235 | |
| 1236 | |
| 1237 | #define MAXMARK26 26 /* max number of marks */ |
| 1238 | |
| 1239 | static line_t *mark[MAXMARK26]; /* line markers */ |
| 1240 | static int markno; /* line marker count */ |
| 1241 | |
| 1242 | /* mark_line_node: set a line node mark */ |
| 1243 | static int |
| 1244 | mark_line_node(line_t *lp, int n) |
| 1245 | { |
| 1246 | if (!islower(n)) { |
| 1247 | seterrmsg("invalid mark character"); |
| 1248 | return ERR(-2); |
| 1249 | } else if (mark[n - 'a'] == NULL((void *)0)) |
| 1250 | markno++; |
| 1251 | mark[n - 'a'] = lp; |
| 1252 | return 0; |
| 1253 | } |
| 1254 | |
| 1255 | |
| 1256 | /* get_marked_node_addr: return address of a marked line */ |
| 1257 | static int |
| 1258 | get_marked_node_addr(int n) |
| 1259 | { |
| 1260 | if (!islower(n)) { |
| 1261 | seterrmsg("invalid mark character"); |
| 1262 | return ERR(-2); |
| 1263 | } |
| 1264 | return get_line_node_addr(mark[n - 'a']); |
| 1265 | } |
| 1266 | |
| 1267 | |
| 1268 | /* unmark_line_node: clear line node mark */ |
| 1269 | void |
| 1270 | unmark_line_node(line_t *lp) |
| 1271 | { |
| 1272 | int i; |
| 1273 | |
| 1274 | for (i = 0; markno && i < MAXMARK26; i++) |
| 1275 | if (mark[i] == lp) { |
| 1276 | mark[i] = NULL((void *)0); |
| 1277 | markno--; |
| 1278 | } |
| 1279 | } |
| 1280 | |
| 1281 | |
| 1282 | /* dup_line_node: return a pointer to a copy of a line node */ |
| 1283 | static line_t * |
| 1284 | dup_line_node(line_t *lp) |
| 1285 | { |
| 1286 | line_t *np; |
| 1287 | |
| 1288 | if ((np = malloc(sizeof(line_t))) == NULL((void *)0)) { |
| 1289 | perror(NULL((void *)0)); |
| 1290 | seterrmsg("out of memory"); |
| 1291 | return NULL((void *)0); |
| 1292 | } |
| 1293 | np->seek = lp->seek; |
| 1294 | np->len = lp->len; |
| 1295 | return np; |
| 1296 | } |
| 1297 | |
| 1298 | |
| 1299 | /* has_trailing_escape: return the parity of escapes preceding a character |
| 1300 | in a string */ |
| 1301 | int |
| 1302 | has_trailing_escape(char *s, char *t) |
| 1303 | { |
| 1304 | return (s == t || *(t - 1) != '\\') ? 0 : !has_trailing_escape(s, t - 1); |
| 1305 | } |
| 1306 | |
| 1307 | |
| 1308 | /* strip_escapes: return copy of escaped string of at most length PATH_MAX */ |
| 1309 | char * |
| 1310 | strip_escapes(char *s) |
| 1311 | { |
| 1312 | static char *file = NULL((void *)0); |
| 1313 | static int filesz = 0; |
| 1314 | |
| 1315 | int i = 0; |
| 1316 | |
| 1317 | REALLOC(file, filesz, PATH_MAX, NULL)if ((1024) > (filesz)) { int ti = (filesz); char *ts; mutex ++; if ((ts = realloc((file), ti += (((1024)) > (512) ? (( 1024)) : (512)))) == ((void *)0)) { perror(((void *)0)); seterrmsg ("out of memory"); do { if (--mutex == 0) { if (sighup) handle_hup (1); if (sigint) handle_int(2); } } while (0); return ((void * )0); } (filesz) = ti; (file) = ts; do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint) handle_int(2); } } while (0); }; |
| 1318 | /* assert: no trailing escape */ |
| 1319 | while ((file[i++] = (*s == '\\') ? *++s : *s) != '\0' && |
| 1320 | i < PATH_MAX1024-1) |
| 1321 | s++; |
| 1322 | file[PATH_MAX1024-1] = '\0'; |
| 1323 | return file; |
| 1324 | } |
| 1325 | |
| 1326 | |
| 1327 | void |
| 1328 | signal_hup(int signo) |
| 1329 | { |
| 1330 | int save_errno = errno(*__errno()); |
| 1331 | |
| 1332 | if (mutex) |
| 1333 | sighup = 1; |
| 1334 | else |
| 1335 | handle_hup(signo); |
| 1336 | errno(*__errno()) = save_errno; |
| 1337 | } |
| 1338 | |
| 1339 | |
| 1340 | void |
| 1341 | signal_int(int signo) |
| 1342 | { |
| 1343 | int save_errno = errno(*__errno()); |
| 1344 | |
| 1345 | if (mutex) |
| 1346 | sigint = 1; |
| 1347 | else |
| 1348 | handle_int(signo); |
| 1349 | errno(*__errno()) = save_errno; |
| 1350 | } |
| 1351 | |
| 1352 | |
| 1353 | void |
| 1354 | handle_hup(int signo) |
| 1355 | { |
| 1356 | char hup[PATH_MAX1024]; |
| 1357 | |
| 1358 | if (!sigactive) |
| 1359 | quit(1); /* XXX signal race */ |
| 1360 | sighup = 0; |
| 1361 | /* XXX signal race */ |
| 1362 | if (addr_last && write_file("ed.hup", "w", 1, addr_last) < 0 && |
| 1363 | home != NULL((void *)0) && home[0] == '/') { |
| 1364 | if (strlcpy(hup, home, sizeof(hup)) < sizeof(hup) && |
| 1365 | strlcat(hup, "/ed.hup", sizeof(hup)) < sizeof(hup)) |
| 1366 | write_file(hup, "w", 1, addr_last); |
| 1367 | } |
| 1368 | _exit(2); |
| 1369 | } |
| 1370 | |
| 1371 | |
| 1372 | void |
| 1373 | handle_int(int signo) |
| 1374 | { |
| 1375 | if (!sigactive) |
| 1376 | _exit(1); |
| 1377 | sigint = 0; |
| 1378 | siglongjmp(env, -1); |
| 1379 | } |
| 1380 | |
| 1381 | |
| 1382 | void |
| 1383 | handle_winch(int signo) |
| 1384 | { |
| 1385 | int save_errno = errno(*__errno()); |
| 1386 | struct winsize ws; /* window size structure */ |
| 1387 | |
| 1388 | if (ioctl(STDIN_FILENO0, TIOCGWINSZ((unsigned long)0x40000000 | ((sizeof(struct winsize) & 0x1fff ) << 16) | ((('t')) << 8) | ((104))), &ws) == 0) { |
| 1389 | if (ws.ws_row > 2) |
| 1390 | rows = ws.ws_row - 2; |
| 1391 | if (ws.ws_col > 8) |
| 1392 | cols = ws.ws_col - 8; |
| 1393 | } |
| 1394 | errno(*__errno()) = save_errno; |
| 1395 | } |