aa9caaf657
merge of parallel duplicate work by Steve Price and myself. :-] There are some changes to the build that are my fault... mkinit.c was trying (poorly) to duplicate some of the work that make(1) is designed to do. The Makefile hackery is my fault too, the depend list was incomplete because of some explicit OBJS+= entries, so mkdep wasn't picking up their source file #includes. This closes a pile of /bin/sh PR's, but not all of them.. Submitted by: Steve Price <steve@bonsai.hiwaay.net>, peter
481 lines
10 KiB
C
481 lines
10 KiB
C
/*-
|
|
* Copyright (c) 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Kenneth Almquist.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $Id: histedit.c,v 1.4 1995/05/30 00:07:14 rgrimes Exp $
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)histedit.c 8.2 (Berkeley) 5/4/95";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <paths.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
/*
|
|
* Editline and history functions (and glue).
|
|
*/
|
|
#include "shell.h"
|
|
#include "parser.h"
|
|
#include "var.h"
|
|
#include "options.h"
|
|
#include "main.h"
|
|
#include "output.h"
|
|
#include "mystring.h"
|
|
#ifndef NO_HISTORY
|
|
#include "myhistedit.h"
|
|
#endif
|
|
#include "error.h"
|
|
#include "eval.h"
|
|
#include "memalloc.h"
|
|
|
|
#define MAXHISTLOOPS 4 /* max recursions through fc */
|
|
#define DEFEDITOR "ed" /* default editor *should* be $EDITOR */
|
|
|
|
History *hist; /* history cookie */
|
|
EditLine *el; /* editline cookie */
|
|
int displayhist;
|
|
static FILE *el_in, *el_out;
|
|
|
|
STATIC char *fc_replace __P((const char *, char *, char *));
|
|
|
|
/*
|
|
* Set history and editing status. Called whenever the status may
|
|
* have changed (figures out what to do).
|
|
*/
|
|
void
|
|
histedit()
|
|
{
|
|
|
|
#define editing (Eflag || Vflag)
|
|
|
|
if (iflag) {
|
|
if (!hist) {
|
|
/*
|
|
* turn history on
|
|
*/
|
|
INTOFF;
|
|
hist = history_init();
|
|
INTON;
|
|
|
|
if (hist != NULL)
|
|
sethistsize();
|
|
else
|
|
out2str("sh: can't initialize history\n");
|
|
}
|
|
if (editing && !el && isatty(0)) { /* && isatty(2) ??? */
|
|
/*
|
|
* turn editing on
|
|
*/
|
|
INTOFF;
|
|
if (el_in == NULL)
|
|
el_in = fdopen(0, "r");
|
|
if (el_out == NULL)
|
|
el_out = fdopen(2, "w");
|
|
if (el_in == NULL || el_out == NULL)
|
|
goto bad;
|
|
el = el_init(arg0, el_in, el_out);
|
|
if (el != NULL) {
|
|
if (hist)
|
|
el_set(el, EL_HIST, history, hist);
|
|
el_set(el, EL_PROMPT, getprompt);
|
|
} else {
|
|
bad:
|
|
out2str("sh: can't initialize editing\n");
|
|
}
|
|
INTON;
|
|
} else if (!editing && el) {
|
|
INTOFF;
|
|
el_end(el);
|
|
el = NULL;
|
|
INTON;
|
|
}
|
|
if (el) {
|
|
if (Vflag)
|
|
el_set(el, EL_EDITOR, "vi");
|
|
else if (Eflag)
|
|
el_set(el, EL_EDITOR, "emacs");
|
|
}
|
|
} else {
|
|
INTOFF;
|
|
if (el) { /* no editing if not interactive */
|
|
el_end(el);
|
|
el = NULL;
|
|
}
|
|
if (hist) {
|
|
history_end(hist);
|
|
hist = NULL;
|
|
}
|
|
INTON;
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
sethistsize()
|
|
{
|
|
char *cp;
|
|
int histsize;
|
|
|
|
if (hist != NULL) {
|
|
cp = lookupvar("HISTSIZE");
|
|
if (cp == NULL || *cp == '\0' ||
|
|
(histsize = atoi(cp)) < 0)
|
|
histsize = 100;
|
|
history(hist, H_EVENT, histsize);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This command is provided since POSIX decided to standardize
|
|
* the Korn shell fc command. Oh well...
|
|
*/
|
|
int
|
|
histcmd(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
extern char *optarg;
|
|
extern int optind, optopt, optreset;
|
|
int ch;
|
|
char *editor = NULL;
|
|
const HistEvent *he;
|
|
int lflg = 0, nflg = 0, rflg = 0, sflg = 0;
|
|
int i;
|
|
char *firststr, *laststr;
|
|
int first, last, direction;
|
|
char *pat = NULL, *repl; /* ksh "fc old=new" crap */
|
|
static int active = 0;
|
|
struct jmploc jmploc;
|
|
struct jmploc *volatile savehandler;
|
|
char editfile[MAXPATHLEN + 1];
|
|
FILE *efp;
|
|
#ifdef __GNUC__
|
|
/* Avoid longjmp clobbering */
|
|
(void) &editor;
|
|
(void) &lflg;
|
|
(void) &nflg;
|
|
(void) &rflg;
|
|
(void) &sflg;
|
|
(void) &firststr;
|
|
(void) &laststr;
|
|
(void) &pat;
|
|
(void) &repl;
|
|
(void) &efp;
|
|
(void) &argc;
|
|
(void) &argv;
|
|
#endif
|
|
|
|
if (hist == NULL)
|
|
error("history not active");
|
|
|
|
if (argc == 1)
|
|
error("missing history argument");
|
|
|
|
optreset = 1; optind = 1; /* initialize getopt */
|
|
while (not_fcnumber(argv[optind]) &&
|
|
(ch = getopt(argc, argv, ":e:lnrs")) != EOF)
|
|
switch ((char)ch) {
|
|
case 'e':
|
|
editor = optarg;
|
|
break;
|
|
case 'l':
|
|
lflg = 1;
|
|
break;
|
|
case 'n':
|
|
nflg = 1;
|
|
break;
|
|
case 'r':
|
|
rflg = 1;
|
|
break;
|
|
case 's':
|
|
sflg = 1;
|
|
break;
|
|
case ':':
|
|
error("option -%c expects argument", optopt);
|
|
case '?':
|
|
default:
|
|
error("unknown option: -%c", optopt);
|
|
}
|
|
argc -= optind, argv += optind;
|
|
|
|
/*
|
|
* If executing...
|
|
*/
|
|
if (lflg == 0 || editor || sflg) {
|
|
lflg = 0; /* ignore */
|
|
editfile[0] = '\0';
|
|
/*
|
|
* Catch interrupts to reset active counter and
|
|
* cleanup temp files.
|
|
*/
|
|
if (setjmp(jmploc.loc)) {
|
|
active = 0;
|
|
if (*editfile)
|
|
unlink(editfile);
|
|
handler = savehandler;
|
|
longjmp(handler->loc, 1);
|
|
}
|
|
savehandler = handler;
|
|
handler = &jmploc;
|
|
if (++active > MAXHISTLOOPS) {
|
|
active = 0;
|
|
displayhist = 0;
|
|
error("called recursively too many times");
|
|
}
|
|
/*
|
|
* Set editor.
|
|
*/
|
|
if (sflg == 0) {
|
|
if (editor == NULL &&
|
|
(editor = bltinlookup("FCEDIT", 1)) == NULL &&
|
|
(editor = bltinlookup("EDITOR", 1)) == NULL)
|
|
editor = DEFEDITOR;
|
|
if (editor[0] == '-' && editor[1] == '\0') {
|
|
sflg = 1; /* no edit */
|
|
editor = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If executing, parse [old=new] now
|
|
*/
|
|
if (lflg == 0 && argc > 0 &&
|
|
((repl = strchr(argv[0], '=')) != NULL)) {
|
|
pat = argv[0];
|
|
*repl++ = '\0';
|
|
argc--, argv++;
|
|
}
|
|
/*
|
|
* determine [first] and [last]
|
|
*/
|
|
switch (argc) {
|
|
case 0:
|
|
firststr = lflg ? "-16" : "-1";
|
|
laststr = "-1";
|
|
break;
|
|
case 1:
|
|
firststr = argv[0];
|
|
laststr = lflg ? "-1" : argv[0];
|
|
break;
|
|
case 2:
|
|
firststr = argv[0];
|
|
laststr = argv[1];
|
|
break;
|
|
default:
|
|
error("too many args");
|
|
}
|
|
/*
|
|
* Turn into event numbers.
|
|
*/
|
|
first = str_to_event(firststr, 0);
|
|
last = str_to_event(laststr, 1);
|
|
|
|
if (rflg) {
|
|
i = last;
|
|
last = first;
|
|
first = i;
|
|
}
|
|
/*
|
|
* XXX - this should not depend on the event numbers
|
|
* always increasing. Add sequence numbers or offset
|
|
* to the history element in next (diskbased) release.
|
|
*/
|
|
direction = first < last ? H_PREV : H_NEXT;
|
|
|
|
/*
|
|
* If editing, grab a temp file.
|
|
*/
|
|
if (editor) {
|
|
int fd;
|
|
INTOFF; /* easier */
|
|
sprintf(editfile, "%s/_shXXXXXX", _PATH_TMP);
|
|
if ((fd = mkstemp(editfile)) < 0)
|
|
error("can't create temporary file %s", editfile);
|
|
if ((efp = fdopen(fd, "w")) == NULL) {
|
|
close(fd);
|
|
error("can't allocate stdio buffer for temp\n");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Loop through selected history events. If listing or executing,
|
|
* do it now. Otherwise, put into temp file and call the editor
|
|
* after.
|
|
*
|
|
* The history interface needs rethinking, as the following
|
|
* convolutions will demonstrate.
|
|
*/
|
|
history(hist, H_FIRST);
|
|
he = history(hist, H_NEXT_EVENT, first);
|
|
for (;he != NULL; he = history(hist, direction)) {
|
|
if (lflg) {
|
|
if (!nflg)
|
|
out1fmt("%5d ", he->num);
|
|
out1str(he->str);
|
|
} else {
|
|
char *s = pat ?
|
|
fc_replace(he->str, pat, repl) : (char *)he->str;
|
|
|
|
if (sflg) {
|
|
if (displayhist) {
|
|
out2str(s);
|
|
}
|
|
evalstring(s);
|
|
if (displayhist && hist) {
|
|
/*
|
|
* XXX what about recursive and
|
|
* relative histnums.
|
|
*/
|
|
history(hist, H_ENTER, s);
|
|
}
|
|
} else
|
|
fputs(s, efp);
|
|
}
|
|
/*
|
|
* At end? (if we were to loose last, we'd sure be
|
|
* messed up).
|
|
*/
|
|
if (he->num == last)
|
|
break;
|
|
}
|
|
if (editor) {
|
|
char *editcmd;
|
|
|
|
fclose(efp);
|
|
editcmd = stalloc(strlen(editor) + strlen(editfile) + 2);
|
|
sprintf(editcmd, "%s %s", editor, editfile);
|
|
evalstring(editcmd); /* XXX - should use no JC command */
|
|
INTON;
|
|
readcmdfile(editfile); /* XXX - should read back - quick tst */
|
|
unlink(editfile);
|
|
}
|
|
|
|
if (lflg == 0 && active > 0)
|
|
--active;
|
|
if (displayhist)
|
|
displayhist = 0;
|
|
return 0;
|
|
}
|
|
|
|
STATIC char *
|
|
fc_replace(s, p, r)
|
|
const char *s;
|
|
char *p, *r;
|
|
{
|
|
char *dest;
|
|
int plen = strlen(p);
|
|
|
|
STARTSTACKSTR(dest);
|
|
while (*s) {
|
|
if (*s == *p && strncmp(s, p, plen) == 0) {
|
|
while (*r)
|
|
STPUTC(*r++, dest);
|
|
s += plen;
|
|
*p = '\0'; /* so no more matches */
|
|
} else
|
|
STPUTC(*s++, dest);
|
|
}
|
|
STACKSTRNUL(dest);
|
|
dest = grabstackstr(dest);
|
|
|
|
return (dest);
|
|
}
|
|
|
|
int
|
|
not_fcnumber(s)
|
|
char *s;
|
|
{
|
|
if (s == NULL) {
|
|
/* NULL is not a fc_number */
|
|
return (1);
|
|
}
|
|
if (*s == '-')
|
|
s++;
|
|
return (!is_number(s));
|
|
}
|
|
|
|
int
|
|
str_to_event(str, last)
|
|
char *str;
|
|
int last;
|
|
{
|
|
const HistEvent *he;
|
|
char *s = str;
|
|
int relative = 0;
|
|
int i;
|
|
|
|
he = history(hist, H_FIRST);
|
|
switch (*s) {
|
|
case '-':
|
|
relative = 1;
|
|
/*FALLTHROUGH*/
|
|
case '+':
|
|
s++;
|
|
}
|
|
if (is_number(s)) {
|
|
i = atoi(s);
|
|
if (relative) {
|
|
while (he != NULL && i--) {
|
|
he = history(hist, H_NEXT);
|
|
}
|
|
if (he == NULL)
|
|
he = history(hist, H_LAST);
|
|
} else {
|
|
he = history(hist, H_NEXT_EVENT, i);
|
|
if (he == NULL) {
|
|
/*
|
|
* the notion of first and last is
|
|
* backwards to that of the history package
|
|
*/
|
|
he = history(hist, last ? H_FIRST : H_LAST);
|
|
}
|
|
}
|
|
if (he == NULL)
|
|
error("history number %s not found (internal error)",
|
|
str);
|
|
} else {
|
|
/*
|
|
* pattern
|
|
*/
|
|
he = history(hist, H_PREV_STR, str);
|
|
if (he == NULL)
|
|
error("history pattern not found: %s", str);
|
|
}
|
|
return (he->num);
|
|
}
|