3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static char sccsid[] = "@(#)histedit.c 8.2 (Berkeley) 5/4/95";
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include <sys/param.h>
48 * Editline and history functions (and glue).
58 #include "myhistedit.h"
64 #define MAXHISTLOOPS 4 /* max recursions through fc */
65 #define DEFEDITOR "ed" /* default editor *should* be $EDITOR */
67 History *hist; /* history cookie */
68 EditLine *el; /* editline cookie */
70 static FILE *el_in, *el_out, *el_err;
72 static char *fc_replace(const char *, char *, char *);
73 static int not_fcnumber(const char *);
74 static int str_to_event(const char *, int);
77 * Set history and editing status. Called whenever the status may
78 * have changed (figures out what to do).
84 #define editing (Eflag || Vflag)
92 hist = history_init();
96 sethistsize(histsizeval());
98 out2fmt_flush("sh: can't initialize history\n");
100 if (editing && !el && isatty(0)) { /* && isatty(2) ??? */
108 el_in = fdopen(0, "r");
110 el_err = fdopen(1, "w");
112 el_out = fdopen(2, "w");
113 if (el_in == NULL || el_err == NULL || el_out == NULL)
115 term = lookupvar("TERM");
117 setenv("TERM", term, 1);
120 el = el_init(arg0, el_in, el_out, el_err);
123 el_set(el, EL_HIST, history, hist);
124 el_set(el, EL_PROMPT, getprompt);
125 el_set(el, EL_ADDFN, "sh-complete",
126 "Filename completion",
130 out2fmt_flush("sh: can't initialize editing\n");
133 } else if (!editing && el) {
141 el_set(el, EL_EDITOR, "vi");
143 el_set(el, EL_EDITOR, "emacs");
144 el_set(el, EL_BIND, "^I", "sh-complete", NULL);
149 if (el) { /* no editing if not interactive */
170 if (hs == NULL || *hs == '\0' ||
171 (histsize = atoi(hs)) < 0)
173 history(hist, &he, H_SETSIZE, histsize);
174 history(hist, &he, H_SETUNIQUE, 1);
179 setterm(const char *term)
181 if (rootshell && el != NULL && term != NULL)
182 el_set(el, EL_TERMINAL, term);
186 histcmd(int argc, char **argv)
189 const char *editor = NULL;
191 int lflg = 0, nflg = 0, rflg = 0, sflg = 0;
193 const char *firststr, *laststr;
194 int first, last, direction;
195 char *pat = NULL, *repl = NULL;
196 static int active = 0;
197 struct jmploc jmploc;
198 struct jmploc *savehandler;
199 char editfilestr[PATH_MAX];
200 char *volatile editfile;
205 error("history not active");
208 error("missing history argument");
210 optreset = 1; optind = 1; /* initialize getopt */
212 while (not_fcnumber(argv[optind]) &&
213 (ch = getopt(argc, argv, ":e:lnrs")) != -1)
231 error("option -%c expects argument", optopt);
234 error("unknown option: -%c", optopt);
236 argc -= optind, argv += optind;
238 savehandler = handler;
242 if (lflg == 0 || editor || sflg) {
243 lflg = 0; /* ignore */
246 * Catch interrupts to reset active counter and
247 * cleanup temp files.
249 if (setjmp(jmploc.loc)) {
253 handler = savehandler;
254 longjmp(handler->loc, 1);
257 if (++active > MAXHISTLOOPS) {
260 error("called recursively too many times");
266 if (editor == NULL &&
267 (editor = bltinlookup("FCEDIT", 1)) == NULL &&
268 (editor = bltinlookup("EDITOR", 1)) == NULL)
270 if (editor[0] == '-' && editor[1] == '\0') {
271 sflg = 1; /* no edit */
278 * If executing, parse [old=new] now
280 if (lflg == 0 && argc > 0 &&
281 ((repl = strchr(argv[0], '=')) != NULL)) {
287 * determine [first] and [last]
291 firststr = lflg ? "-16" : "-1";
296 laststr = lflg ? "-1" : argv[0];
303 error("too many arguments");
306 * Turn into event numbers.
308 first = str_to_event(firststr, 0);
309 last = str_to_event(laststr, 1);
317 * XXX - this should not depend on the event numbers
318 * always increasing. Add sequence numbers or offset
319 * to the history element in next (diskbased) release.
321 direction = first < last ? H_PREV : H_NEXT;
324 * If editing, grab a temp file.
329 sprintf(editfilestr, "%s/_shXXXXXX", _PATH_TMP);
330 if ((fd = mkstemp(editfilestr)) < 0)
331 error("can't create temporary file %s", editfile);
332 editfile = editfilestr;
333 if ((efp = fdopen(fd, "w")) == NULL) {
335 error("Out of space");
340 * Loop through selected history events. If listing or executing,
341 * do it now. Otherwise, put into temp file and call the editor
344 * The history interface needs rethinking, as the following
345 * convolutions will demonstrate.
347 history(hist, &he, H_FIRST);
348 retval = history(hist, &he, H_NEXT_EVENT, first);
349 for (;retval != -1; retval = history(hist, &he, direction)) {
352 out1fmt("%5d ", he.num);
356 fc_replace(he.str, pat, repl) : (char *)he.str;
364 if (displayhist && hist) {
366 * XXX what about recursive and
370 history(hist, &he, H_ENTER, s);
372 * XXX H_ENTER moves the internal
373 * cursor, set it back to the current
376 retval = history(hist, &he,
377 H_NEXT_EVENT, oldhistnum);
383 * At end? (if we were to lose last, we'd sure be
393 editcmd = stalloc(strlen(editor) + strlen(editfile) + 2);
394 sprintf(editcmd, "%s %s", editor, editfile);
395 evalstring(editcmd, 0); /* XXX - should use no JC command */
397 readcmdfile(editfile); /* XXX - should read back - quick tst */
401 if (lflg == 0 && active > 0)
405 handler = savehandler;
410 fc_replace(const char *s, char *p, char *r)
413 int plen = strlen(p);
417 if (*s == *p && strncmp(s, p, plen) == 0) {
420 *p = '\0'; /* so no more matches */
425 dest = grabstackstr(dest);
431 not_fcnumber(const char *s)
437 return (!is_number(s));
441 str_to_event(const char *str, int last)
448 retval = history(hist, &he, H_FIRST);
459 while (retval != -1 && i--) {
460 retval = history(hist, &he, H_NEXT);
463 retval = history(hist, &he, H_LAST);
465 retval = history(hist, &he, H_NEXT_EVENT, i);
468 * the notion of first and last is
469 * backwards to that of the history package
471 retval = history(hist, &he, last ? H_FIRST : H_LAST);
475 error("history number %s not found (internal error)",
481 retval = history(hist, &he, H_PREV_STR, str);
483 error("history pattern not found: %s", str);
489 bindcmd(int argc, char **argv)
493 error("line editing is disabled");
494 return (el_parse(el, argc, (const char **)argv));
501 histcmd(int argc, char **argv)
504 error("not compiled with history support");
510 bindcmd(int argc, char **argv)
513 error("not compiled with line editing support");