| 1 | /* $NetBSD: histedit.c,v 1.36 2005/05/09 11:35:19 christos Exp $ */
|
|---|
| 2 |
|
|---|
| 3 | /*-
|
|---|
| 4 | * Copyright (c) 1993
|
|---|
| 5 | * The Regents of the University of California. All rights reserved.
|
|---|
| 6 | *
|
|---|
| 7 | * This code is derived from software contributed to Berkeley by
|
|---|
| 8 | * Kenneth Almquist.
|
|---|
| 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 | * 3. Neither the name of the University nor the names of its contributors
|
|---|
| 19 | * may be used to endorse or promote products derived from this software
|
|---|
| 20 | * without specific prior written permission.
|
|---|
| 21 | *
|
|---|
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|---|
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|---|
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|---|
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|---|
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|---|
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|---|
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|---|
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|---|
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|---|
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|---|
| 32 | * SUCH DAMAGE.
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #include <sys/cdefs.h>
|
|---|
| 36 | #ifndef lint
|
|---|
| 37 | #if 0
|
|---|
| 38 | static char sccsid[] = "@(#)histedit.c 8.2 (Berkeley) 5/4/95";
|
|---|
| 39 | #else
|
|---|
| 40 | __RCSID("$NetBSD: histedit.c,v 1.36 2005/05/09 11:35:19 christos Exp $");
|
|---|
| 41 | #endif
|
|---|
| 42 | #endif /* not lint */
|
|---|
| 43 |
|
|---|
| 44 | #include <sys/param.h>
|
|---|
| 45 | #include <paths.h>
|
|---|
| 46 | #include <stdio.h>
|
|---|
| 47 | #include <stdlib.h>
|
|---|
| 48 | #include <unistd.h>
|
|---|
| 49 | /*
|
|---|
| 50 | * Editline and history functions (and glue).
|
|---|
| 51 | */
|
|---|
| 52 | #include "shell.h"
|
|---|
| 53 | #include "parser.h"
|
|---|
| 54 | #include "var.h"
|
|---|
| 55 | #include "options.h"
|
|---|
| 56 | #include "main.h"
|
|---|
| 57 | #include "output.h"
|
|---|
| 58 | #include "mystring.h"
|
|---|
| 59 | #include "myhistedit.h"
|
|---|
| 60 | #include "error.h"
|
|---|
| 61 | #ifndef SMALL
|
|---|
| 62 | #include "eval.h"
|
|---|
| 63 | #include "memalloc.h"
|
|---|
| 64 |
|
|---|
| 65 | #define MAXHISTLOOPS 4 /* max recursions through fc */
|
|---|
| 66 | #define DEFEDITOR "ed" /* default editor *should* be $EDITOR */
|
|---|
| 67 |
|
|---|
| 68 | History *hist; /* history cookie */
|
|---|
| 69 | EditLine *el; /* editline cookie */
|
|---|
| 70 | int displayhist;
|
|---|
| 71 | static FILE *el_in, *el_out;
|
|---|
| 72 | unsigned char _el_fn_complete(EditLine *, int);
|
|---|
| 73 |
|
|---|
| 74 | STATIC const char *fc_replace(const char *, char *, char *);
|
|---|
| 75 |
|
|---|
| 76 | #ifdef DEBUG
|
|---|
| 77 | extern FILE *tracefile;
|
|---|
| 78 | #endif
|
|---|
| 79 |
|
|---|
| 80 | /*
|
|---|
| 81 | * Set history and editing status. Called whenever the status may
|
|---|
| 82 | * have changed (figures out what to do).
|
|---|
| 83 | */
|
|---|
| 84 | void
|
|---|
| 85 | histedit(void)
|
|---|
| 86 | {
|
|---|
| 87 | FILE *el_err;
|
|---|
| 88 |
|
|---|
| 89 | #define editing (Eflag || Vflag)
|
|---|
| 90 |
|
|---|
| 91 | if (iflag) {
|
|---|
| 92 | if (!hist) {
|
|---|
| 93 | /*
|
|---|
| 94 | * turn history on
|
|---|
| 95 | */
|
|---|
| 96 | INTOFF;
|
|---|
| 97 | hist = history_init();
|
|---|
| 98 | INTON;
|
|---|
| 99 |
|
|---|
| 100 | if (hist != NULL)
|
|---|
| 101 | sethistsize(histsizeval());
|
|---|
| 102 | else
|
|---|
| 103 | out2str("sh: can't initialize history\n");
|
|---|
| 104 | }
|
|---|
| 105 | if (editing && !el && isatty(0)) { /* && isatty(2) ??? */
|
|---|
| 106 | /*
|
|---|
| 107 | * turn editing on
|
|---|
| 108 | */
|
|---|
| 109 | char *term, *shname;
|
|---|
| 110 |
|
|---|
| 111 | INTOFF;
|
|---|
| 112 | if (el_in == NULL)
|
|---|
| 113 | el_in = fdopen(0, "r");
|
|---|
| 114 | if (el_out == NULL)
|
|---|
| 115 | el_out = fdopen(2, "w");
|
|---|
| 116 | if (el_in == NULL || el_out == NULL)
|
|---|
| 117 | goto bad;
|
|---|
| 118 | el_err = el_out;
|
|---|
| 119 | #if DEBUG
|
|---|
| 120 | if (tracefile)
|
|---|
| 121 | el_err = tracefile;
|
|---|
| 122 | #endif
|
|---|
| 123 | term = lookupvar("TERM");
|
|---|
| 124 | if (term)
|
|---|
| 125 | setenv("TERM", term, 1);
|
|---|
| 126 | else
|
|---|
| 127 | unsetenv("TERM");
|
|---|
| 128 | shname = arg0;
|
|---|
| 129 | if (shname[0] == '-')
|
|---|
| 130 | shname++;
|
|---|
| 131 | el = el_init(shname, el_in, el_out, el_err);
|
|---|
| 132 | if (el != NULL) {
|
|---|
| 133 | if (hist)
|
|---|
| 134 | el_set(el, EL_HIST, history, hist);
|
|---|
| 135 | el_set(el, EL_PROMPT, getprompt);
|
|---|
| 136 | el_set(el, EL_SIGNAL, 1);
|
|---|
| 137 | el_set(el, EL_ADDFN, "rl-complete",
|
|---|
| 138 | "ReadLine compatible completion function",
|
|---|
| 139 | _el_fn_complete);
|
|---|
| 140 | } else {
|
|---|
| 141 | bad:
|
|---|
| 142 | out2str("sh: can't initialize editing\n");
|
|---|
| 143 | }
|
|---|
| 144 | INTON;
|
|---|
| 145 | } else if (!editing && el) {
|
|---|
| 146 | INTOFF;
|
|---|
| 147 | el_end(el);
|
|---|
| 148 | el = NULL;
|
|---|
| 149 | INTON;
|
|---|
| 150 | }
|
|---|
| 151 | if (el) {
|
|---|
| 152 | if (Vflag)
|
|---|
| 153 | el_set(el, EL_EDITOR, "vi");
|
|---|
| 154 | else if (Eflag)
|
|---|
| 155 | el_set(el, EL_EDITOR, "emacs");
|
|---|
| 156 | el_set(el, EL_BIND, "^I",
|
|---|
| 157 | tabcomplete ? "rl-complete" : "ed-insert", NULL);
|
|---|
| 158 | el_source(el, NULL);
|
|---|
| 159 | }
|
|---|
| 160 | } else {
|
|---|
| 161 | INTOFF;
|
|---|
| 162 | if (el) { /* no editing if not interactive */
|
|---|
| 163 | el_end(el);
|
|---|
| 164 | el = NULL;
|
|---|
| 165 | }
|
|---|
| 166 | if (hist) {
|
|---|
| 167 | history_end(hist);
|
|---|
| 168 | hist = NULL;
|
|---|
| 169 | }
|
|---|
| 170 | INTON;
|
|---|
| 171 | }
|
|---|
| 172 | }
|
|---|
| 173 |
|
|---|
| 174 |
|
|---|
| 175 | void
|
|---|
| 176 | sethistsize(const char *hs)
|
|---|
| 177 | {
|
|---|
| 178 | int histsize;
|
|---|
| 179 | HistEvent he;
|
|---|
| 180 |
|
|---|
| 181 | if (hist != NULL) {
|
|---|
| 182 | if (hs == NULL || *hs == '\0' ||
|
|---|
| 183 | (histsize = atoi(hs)) < 0)
|
|---|
| 184 | histsize = 100;
|
|---|
| 185 | history(hist, &he, H_SETSIZE, histsize);
|
|---|
| 186 | }
|
|---|
| 187 | }
|
|---|
| 188 |
|
|---|
| 189 | void
|
|---|
| 190 | setterm(const char *term)
|
|---|
| 191 | {
|
|---|
| 192 | if (el != NULL && term != NULL)
|
|---|
| 193 | if (el_set(el, EL_TERMINAL, term) != 0) {
|
|---|
| 194 | outfmt(out2, "sh: Can't set terminal type %s\n", term);
|
|---|
| 195 | outfmt(out2, "sh: Using dumb terminal settings.\n");
|
|---|
| 196 | }
|
|---|
| 197 | }
|
|---|
| 198 |
|
|---|
| 199 | int
|
|---|
| 200 | inputrc(argc, argv)
|
|---|
| 201 | int argc;
|
|---|
| 202 | char **argv;
|
|---|
| 203 | {
|
|---|
| 204 | if (argc != 2) {
|
|---|
| 205 | out2str("usage: inputrc file\n");
|
|---|
| 206 | return 1;
|
|---|
| 207 | }
|
|---|
| 208 | if (el != NULL) {
|
|---|
| 209 | if (el_source(el, argv[1])) {
|
|---|
| 210 | out2str("inputrc: failed\n");
|
|---|
| 211 | return 1;
|
|---|
| 212 | } else
|
|---|
| 213 | return 0;
|
|---|
| 214 | } else {
|
|---|
| 215 | out2str("sh: inputrc ignored, not editing\n");
|
|---|
| 216 | return 1;
|
|---|
| 217 | }
|
|---|
| 218 | }
|
|---|
| 219 |
|
|---|
| 220 | /*
|
|---|
| 221 | * This command is provided since POSIX decided to standardize
|
|---|
| 222 | * the Korn shell fc command. Oh well...
|
|---|
| 223 | */
|
|---|
| 224 | int
|
|---|
| 225 | histcmd(int argc, char **argv)
|
|---|
| 226 | {
|
|---|
| 227 | int ch;
|
|---|
| 228 | const char *editor = NULL;
|
|---|
| 229 | HistEvent he;
|
|---|
| 230 | int lflg = 0, nflg = 0, rflg = 0, sflg = 0;
|
|---|
| 231 | int i, retval;
|
|---|
| 232 | const char *firststr, *laststr;
|
|---|
| 233 | int first, last, direction;
|
|---|
| 234 | char *pat = NULL, *repl; /* ksh "fc old=new" crap */
|
|---|
| 235 | static int active = 0;
|
|---|
| 236 | struct jmploc jmploc;
|
|---|
| 237 | struct jmploc *volatile savehandler;
|
|---|
| 238 | char editfile[MAXPATHLEN + 1];
|
|---|
| 239 | FILE *efp;
|
|---|
| 240 | #ifdef __GNUC__
|
|---|
| 241 | /* Avoid longjmp clobbering */
|
|---|
| 242 | (void) &editor;
|
|---|
| 243 | (void) &lflg;
|
|---|
| 244 | (void) &nflg;
|
|---|
| 245 | (void) &rflg;
|
|---|
| 246 | (void) &sflg;
|
|---|
| 247 | (void) &firststr;
|
|---|
| 248 | (void) &laststr;
|
|---|
| 249 | (void) &pat;
|
|---|
| 250 | (void) &repl;
|
|---|
| 251 | (void) &efp;
|
|---|
| 252 | (void) &argc;
|
|---|
| 253 | (void) &argv;
|
|---|
| 254 | #endif
|
|---|
| 255 |
|
|---|
| 256 | if (hist == NULL)
|
|---|
| 257 | error("history not active");
|
|---|
| 258 |
|
|---|
| 259 | if (argc == 1)
|
|---|
| 260 | error("missing history argument");
|
|---|
| 261 |
|
|---|
| 262 | optreset = 1; optind = 1; /* initialize getopt */
|
|---|
| 263 | while (not_fcnumber(argv[optind]) &&
|
|---|
| 264 | (ch = getopt(argc, argv, ":e:lnrs")) != -1)
|
|---|
| 265 | switch ((char)ch) {
|
|---|
| 266 | case 'e':
|
|---|
| 267 | editor = optionarg;
|
|---|
| 268 | break;
|
|---|
| 269 | case 'l':
|
|---|
| 270 | lflg = 1;
|
|---|
| 271 | break;
|
|---|
| 272 | case 'n':
|
|---|
| 273 | nflg = 1;
|
|---|
| 274 | break;
|
|---|
| 275 | case 'r':
|
|---|
| 276 | rflg = 1;
|
|---|
| 277 | break;
|
|---|
| 278 | case 's':
|
|---|
| 279 | sflg = 1;
|
|---|
| 280 | break;
|
|---|
| 281 | case ':':
|
|---|
| 282 | error("option -%c expects argument", optopt);
|
|---|
| 283 | /* NOTREACHED */
|
|---|
| 284 | case '?':
|
|---|
| 285 | default:
|
|---|
| 286 | error("unknown option: -%c", optopt);
|
|---|
| 287 | /* NOTREACHED */
|
|---|
| 288 | }
|
|---|
| 289 | argc -= optind, argv += optind;
|
|---|
| 290 |
|
|---|
| 291 | /*
|
|---|
| 292 | * If executing...
|
|---|
| 293 | */
|
|---|
| 294 | if (lflg == 0 || editor || sflg) {
|
|---|
| 295 | lflg = 0; /* ignore */
|
|---|
| 296 | editfile[0] = '\0';
|
|---|
| 297 | /*
|
|---|
| 298 | * Catch interrupts to reset active counter and
|
|---|
| 299 | * cleanup temp files.
|
|---|
| 300 | */
|
|---|
| 301 | if (setjmp(jmploc.loc)) {
|
|---|
| 302 | active = 0;
|
|---|
| 303 | if (*editfile)
|
|---|
| 304 | unlink(editfile);
|
|---|
| 305 | handler = savehandler;
|
|---|
| 306 | longjmp(handler->loc, 1);
|
|---|
| 307 | }
|
|---|
| 308 | savehandler = handler;
|
|---|
| 309 | handler = &jmploc;
|
|---|
| 310 | if (++active > MAXHISTLOOPS) {
|
|---|
| 311 | active = 0;
|
|---|
| 312 | displayhist = 0;
|
|---|
| 313 | error("called recursively too many times");
|
|---|
| 314 | }
|
|---|
| 315 | /*
|
|---|
| 316 | * Set editor.
|
|---|
| 317 | */
|
|---|
| 318 | if (sflg == 0) {
|
|---|
| 319 | if (editor == NULL &&
|
|---|
| 320 | (editor = bltinlookup("FCEDIT", 1)) == NULL &&
|
|---|
| 321 | (editor = bltinlookup("EDITOR", 1)) == NULL)
|
|---|
| 322 | editor = DEFEDITOR;
|
|---|
| 323 | if (editor[0] == '-' && editor[1] == '\0') {
|
|---|
| 324 | sflg = 1; /* no edit */
|
|---|
| 325 | editor = NULL;
|
|---|
| 326 | }
|
|---|
| 327 | }
|
|---|
| 328 | }
|
|---|
| 329 |
|
|---|
| 330 | /*
|
|---|
| 331 | * If executing, parse [old=new] now
|
|---|
| 332 | */
|
|---|
| 333 | if (lflg == 0 && argc > 0 &&
|
|---|
| 334 | ((repl = strchr(argv[0], '=')) != NULL)) {
|
|---|
| 335 | pat = argv[0];
|
|---|
| 336 | *repl++ = '\0';
|
|---|
| 337 | argc--, argv++;
|
|---|
| 338 | }
|
|---|
| 339 | /*
|
|---|
| 340 | * determine [first] and [last]
|
|---|
| 341 | */
|
|---|
| 342 | switch (argc) {
|
|---|
| 343 | case 0:
|
|---|
| 344 | firststr = lflg ? "-16" : "-1";
|
|---|
| 345 | laststr = "-1";
|
|---|
| 346 | break;
|
|---|
| 347 | case 1:
|
|---|
| 348 | firststr = argv[0];
|
|---|
| 349 | laststr = lflg ? "-1" : argv[0];
|
|---|
| 350 | break;
|
|---|
| 351 | case 2:
|
|---|
| 352 | firststr = argv[0];
|
|---|
| 353 | laststr = argv[1];
|
|---|
| 354 | break;
|
|---|
| 355 | default:
|
|---|
| 356 | error("too many args");
|
|---|
| 357 | /* NOTREACHED */
|
|---|
| 358 | }
|
|---|
| 359 | /*
|
|---|
| 360 | * Turn into event numbers.
|
|---|
| 361 | */
|
|---|
| 362 | first = str_to_event(firststr, 0);
|
|---|
| 363 | last = str_to_event(laststr, 1);
|
|---|
| 364 |
|
|---|
| 365 | if (rflg) {
|
|---|
| 366 | i = last;
|
|---|
| 367 | last = first;
|
|---|
| 368 | first = i;
|
|---|
| 369 | }
|
|---|
| 370 | /*
|
|---|
| 371 | * XXX - this should not depend on the event numbers
|
|---|
| 372 | * always increasing. Add sequence numbers or offset
|
|---|
| 373 | * to the history element in next (diskbased) release.
|
|---|
| 374 | */
|
|---|
| 375 | direction = first < last ? H_PREV : H_NEXT;
|
|---|
| 376 |
|
|---|
| 377 | /*
|
|---|
| 378 | * If editing, grab a temp file.
|
|---|
| 379 | */
|
|---|
| 380 | if (editor) {
|
|---|
| 381 | int fd;
|
|---|
| 382 | INTOFF; /* easier */
|
|---|
| 383 | snprintf(editfile, sizeof(editfile), "%s_shXXXXXX", _PATH_TMP);
|
|---|
| 384 | if ((fd = mkstemp(editfile)) < 0)
|
|---|
| 385 | error("can't create temporary file %s", editfile);
|
|---|
| 386 | if ((efp = fdopen(fd, "w")) == NULL) {
|
|---|
| 387 | close(fd);
|
|---|
| 388 | error("can't allocate stdio buffer for temp");
|
|---|
| 389 | }
|
|---|
| 390 | }
|
|---|
| 391 |
|
|---|
| 392 | /*
|
|---|
| 393 | * Loop through selected history events. If listing or executing,
|
|---|
| 394 | * do it now. Otherwise, put into temp file and call the editor
|
|---|
| 395 | * after.
|
|---|
| 396 | *
|
|---|
| 397 | * The history interface needs rethinking, as the following
|
|---|
| 398 | * convolutions will demonstrate.
|
|---|
| 399 | */
|
|---|
| 400 | history(hist, &he, H_FIRST);
|
|---|
| 401 | retval = history(hist, &he, H_NEXT_EVENT, first);
|
|---|
| 402 | for (;retval != -1; retval = history(hist, &he, direction)) {
|
|---|
| 403 | if (lflg) {
|
|---|
| 404 | if (!nflg)
|
|---|
| 405 | out1fmt("%5d ", he.num);
|
|---|
| 406 | out1str(he.str);
|
|---|
| 407 | } else {
|
|---|
| 408 | const char *s = pat ?
|
|---|
| 409 | fc_replace(he.str, pat, repl) : he.str;
|
|---|
| 410 |
|
|---|
| 411 | if (sflg) {
|
|---|
| 412 | if (displayhist) {
|
|---|
| 413 | out2str(s);
|
|---|
| 414 | }
|
|---|
| 415 |
|
|---|
| 416 | evalstring(strcpy(stalloc(strlen(s) + 1), s), 0);
|
|---|
| 417 | if (displayhist && hist) {
|
|---|
| 418 | /*
|
|---|
| 419 | * XXX what about recursive and
|
|---|
| 420 | * relative histnums.
|
|---|
| 421 | */
|
|---|
| 422 | history(hist, &he, H_ENTER, s);
|
|---|
| 423 | }
|
|---|
| 424 | } else
|
|---|
| 425 | fputs(s, efp);
|
|---|
| 426 | }
|
|---|
| 427 | /*
|
|---|
| 428 | * At end? (if we were to lose last, we'd sure be
|
|---|
| 429 | * messed up).
|
|---|
| 430 | */
|
|---|
| 431 | if (he.num == last)
|
|---|
| 432 | break;
|
|---|
| 433 | }
|
|---|
| 434 | if (editor) {
|
|---|
| 435 | char *editcmd;
|
|---|
| 436 |
|
|---|
| 437 | fclose(efp);
|
|---|
| 438 | editcmd = stalloc(strlen(editor) + strlen(editfile) + 2);
|
|---|
| 439 | sprintf(editcmd, "%s %s", editor, editfile);
|
|---|
| 440 | evalstring(editcmd, 0); /* XXX - should use no JC command */
|
|---|
| 441 | INTON;
|
|---|
| 442 | readcmdfile(editfile); /* XXX - should read back - quick tst */
|
|---|
| 443 | unlink(editfile);
|
|---|
| 444 | }
|
|---|
| 445 |
|
|---|
| 446 | if (lflg == 0 && active > 0)
|
|---|
| 447 | --active;
|
|---|
| 448 | if (displayhist)
|
|---|
| 449 | displayhist = 0;
|
|---|
| 450 | return 0;
|
|---|
| 451 | }
|
|---|
| 452 |
|
|---|
| 453 | STATIC const char *
|
|---|
| 454 | fc_replace(const char *s, char *p, char *r)
|
|---|
| 455 | {
|
|---|
| 456 | char *dest;
|
|---|
| 457 | int plen = strlen(p);
|
|---|
| 458 |
|
|---|
| 459 | STARTSTACKSTR(dest);
|
|---|
| 460 | while (*s) {
|
|---|
| 461 | if (*s == *p && strncmp(s, p, plen) == 0) {
|
|---|
| 462 | while (*r)
|
|---|
| 463 | STPUTC(*r++, dest);
|
|---|
| 464 | s += plen;
|
|---|
| 465 | *p = '\0'; /* so no more matches */
|
|---|
| 466 | } else
|
|---|
| 467 | STPUTC(*s++, dest);
|
|---|
| 468 | }
|
|---|
| 469 | STACKSTRNUL(dest);
|
|---|
| 470 | dest = grabstackstr(dest);
|
|---|
| 471 |
|
|---|
| 472 | return (dest);
|
|---|
| 473 | }
|
|---|
| 474 |
|
|---|
| 475 | int
|
|---|
| 476 | not_fcnumber(char *s)
|
|---|
| 477 | {
|
|---|
| 478 | if (s == NULL)
|
|---|
| 479 | return 0;
|
|---|
| 480 | if (*s == '-')
|
|---|
| 481 | s++;
|
|---|
| 482 | return (!is_number(s));
|
|---|
| 483 | }
|
|---|
| 484 |
|
|---|
| 485 | int
|
|---|
| 486 | str_to_event(const char *str, int last)
|
|---|
| 487 | {
|
|---|
| 488 | HistEvent he;
|
|---|
| 489 | const char *s = str;
|
|---|
| 490 | int relative = 0;
|
|---|
| 491 | int i, retval;
|
|---|
| 492 |
|
|---|
| 493 | retval = history(hist, &he, H_FIRST);
|
|---|
| 494 | switch (*s) {
|
|---|
| 495 | case '-':
|
|---|
| 496 | relative = 1;
|
|---|
| 497 | /*FALLTHROUGH*/
|
|---|
| 498 | case '+':
|
|---|
| 499 | s++;
|
|---|
| 500 | }
|
|---|
| 501 | if (is_number(s)) {
|
|---|
| 502 | i = atoi(s);
|
|---|
| 503 | if (relative) {
|
|---|
| 504 | while (retval != -1 && i--) {
|
|---|
| 505 | retval = history(hist, &he, H_NEXT);
|
|---|
| 506 | }
|
|---|
| 507 | if (retval == -1)
|
|---|
| 508 | retval = history(hist, &he, H_LAST);
|
|---|
| 509 | } else {
|
|---|
| 510 | retval = history(hist, &he, H_NEXT_EVENT, i);
|
|---|
| 511 | if (retval == -1) {
|
|---|
| 512 | /*
|
|---|
| 513 | * the notion of first and last is
|
|---|
| 514 | * backwards to that of the history package
|
|---|
| 515 | */
|
|---|
| 516 | retval = history(hist, &he,
|
|---|
| 517 | last ? H_FIRST : H_LAST);
|
|---|
| 518 | }
|
|---|
| 519 | }
|
|---|
| 520 | if (retval == -1)
|
|---|
| 521 | error("history number %s not found (internal error)",
|
|---|
| 522 | str);
|
|---|
| 523 | } else {
|
|---|
| 524 | /*
|
|---|
| 525 | * pattern
|
|---|
| 526 | */
|
|---|
| 527 | retval = history(hist, &he, H_PREV_STR, str);
|
|---|
| 528 | if (retval == -1)
|
|---|
| 529 | error("history pattern not found: %s", str);
|
|---|
| 530 | }
|
|---|
| 531 | return (he.num);
|
|---|
| 532 | }
|
|---|
| 533 | #else
|
|---|
| 534 | int
|
|---|
| 535 | histcmd(int argc, char **argv)
|
|---|
| 536 | {
|
|---|
| 537 | error("not compiled with history support");
|
|---|
| 538 | /* NOTREACHED */
|
|---|
| 539 | }
|
|---|
| 540 | int
|
|---|
| 541 | inputrc(int argc, char **argv)
|
|---|
| 542 | {
|
|---|
| 543 | error("not compiled with history support");
|
|---|
| 544 | /* NOTREACHED */
|
|---|
| 545 | }
|
|---|
| 546 | #endif
|
|---|
