mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
484 lines
11 KiB
C
484 lines
11 KiB
C
/* $Header: /src/pub/tcsh/sh.hist.c,v 3.33 2004/12/25 21:15:07 christos Exp $ */
|
|
/*
|
|
* sh.hist.c: Shell history expansions and substitutions
|
|
*/
|
|
/*-
|
|
* Copyright (c) 1980, 1991 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* 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. 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.
|
|
*/
|
|
#include "sh.h"
|
|
|
|
RCSID("$Id: sh.hist.c,v 3.33 2004/12/25 21:15:07 christos Exp $")
|
|
|
|
#include "tc.h"
|
|
|
|
extern int histvalid;
|
|
extern Char histline[];
|
|
Char HistLit = 0;
|
|
|
|
static int heq __P((struct wordent *, struct wordent *));
|
|
static void hfree __P((struct Hist *));
|
|
static void dohist1 __P((struct Hist *, int *, int));
|
|
static void phist __P((struct Hist *, int));
|
|
|
|
#define HIST_ONLY 0x01
|
|
#define HIST_SAVE 0x02
|
|
#define HIST_LOAD 0x04
|
|
#define HIST_REV 0x08
|
|
#define HIST_CLEAR 0x10
|
|
#define HIST_MERGE 0x20
|
|
#define HIST_TIME 0x40
|
|
|
|
/*
|
|
* C shell
|
|
*/
|
|
|
|
void
|
|
savehist(sp, mflg)
|
|
struct wordent *sp;
|
|
int mflg;
|
|
{
|
|
struct Hist *hp, *np;
|
|
int histlen = 0;
|
|
Char *cp;
|
|
|
|
/* throw away null lines */
|
|
if (sp && sp->next->word[0] == '\n')
|
|
return;
|
|
cp = varval(STRhistory);
|
|
if (*cp) {
|
|
Char *p = cp;
|
|
|
|
while (*p) {
|
|
if (!Isdigit(*p)) {
|
|
histlen = 0;
|
|
break;
|
|
}
|
|
histlen = histlen * 10 + *p++ - '0';
|
|
}
|
|
}
|
|
if (sp)
|
|
(void) enthist(++eventno, sp, 1, mflg);
|
|
for (hp = &Histlist; (np = hp->Hnext) != NULL;)
|
|
if (eventno - np->Href >= histlen || histlen == 0)
|
|
hp->Hnext = np->Hnext, hfree(np);
|
|
else
|
|
hp = np;
|
|
}
|
|
|
|
static int
|
|
heq(a0, b0)
|
|
struct wordent *a0, *b0;
|
|
{
|
|
struct wordent *a = a0->next, *b = b0->next;
|
|
|
|
for (;;) {
|
|
if (Strcmp(a->word, b->word) != 0)
|
|
return 0;
|
|
a = a->next;
|
|
b = b->next;
|
|
if (a == a0)
|
|
return (b == b0) ? 1 : 0;
|
|
if (b == b0)
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
struct Hist *
|
|
enthist(event, lp, docopy, mflg)
|
|
int event;
|
|
struct wordent *lp;
|
|
int docopy;
|
|
int mflg;
|
|
{
|
|
struct Hist *p = NULL, *pp = &Histlist;
|
|
int n, r;
|
|
struct Hist *np;
|
|
Char *dp;
|
|
|
|
if ((dp = varval(STRhistdup)) != STRNULL) {
|
|
if (eq(dp, STRerase)) {
|
|
/* masaoki@akebono.tky.hp.com (Kobayashi Masaoki) */
|
|
struct Hist *px;
|
|
for (p = pp; (px = p, p = p->Hnext) != NULL;)
|
|
if (heq(lp, &(p->Hlex))){
|
|
px->Hnext = p->Hnext;
|
|
if (Htime != 0 && p->Htime > Htime)
|
|
Htime = p->Htime;
|
|
n = p->Href;
|
|
hfree(p);
|
|
for (p = px->Hnext; p != NULL; p = p->Hnext)
|
|
p->Href = n--;
|
|
break;
|
|
}
|
|
}
|
|
else if (eq(dp, STRall)) {
|
|
for (p = pp; (p = p->Hnext) != NULL;)
|
|
if (heq(lp, &(p->Hlex))) {
|
|
eventno--;
|
|
break;
|
|
}
|
|
}
|
|
else if (eq(dp, STRprev)) {
|
|
if (pp->Hnext && heq(lp, &(pp->Hnext->Hlex))) {
|
|
p = pp->Hnext;
|
|
eventno--;
|
|
}
|
|
}
|
|
}
|
|
|
|
np = p ? p : (struct Hist *) xmalloc((size_t) sizeof(*np));
|
|
|
|
/* Pick up timestamp set by lex() in Htime if reading saved history */
|
|
if (Htime != (time_t) 0) {
|
|
np->Htime = Htime;
|
|
Htime = 0;
|
|
}
|
|
else
|
|
(void) time(&(np->Htime));
|
|
|
|
if (p == np)
|
|
return np;
|
|
|
|
np->Hnum = np->Href = event;
|
|
if (docopy) {
|
|
copylex(&np->Hlex, lp);
|
|
if (histvalid)
|
|
np->histline = Strsave(histline);
|
|
else
|
|
np->histline = NULL;
|
|
}
|
|
else {
|
|
np->Hlex.next = lp->next;
|
|
lp->next->prev = &np->Hlex;
|
|
np->Hlex.prev = lp->prev;
|
|
lp->prev->next = &np->Hlex;
|
|
np->histline = NULL;
|
|
}
|
|
if (mflg)
|
|
{
|
|
while ((p = pp->Hnext) && (p->Htime > np->Htime))
|
|
pp = p;
|
|
while (p && p->Htime == np->Htime)
|
|
{
|
|
if (heq(&p->Hlex, &np->Hlex))
|
|
{
|
|
eventno--;
|
|
hfree(np);
|
|
return (p);
|
|
}
|
|
pp = p;
|
|
p = p->Hnext;
|
|
}
|
|
for (p = Histlist.Hnext; p != pp->Hnext; p = p->Hnext)
|
|
{
|
|
n = p->Hnum; r = p->Href;
|
|
p->Hnum = np->Hnum; p->Href = np->Href;
|
|
np->Hnum = n; np->Href = r;
|
|
}
|
|
}
|
|
np->Hnext = pp->Hnext;
|
|
pp->Hnext = np;
|
|
return (np);
|
|
}
|
|
|
|
static void
|
|
hfree(hp)
|
|
struct Hist *hp;
|
|
{
|
|
|
|
freelex(&hp->Hlex);
|
|
if (hp->histline)
|
|
xfree((ptr_t) hp->histline);
|
|
xfree((ptr_t) hp);
|
|
}
|
|
|
|
|
|
/*ARGSUSED*/
|
|
void
|
|
dohist(vp, c)
|
|
Char **vp;
|
|
struct command *c;
|
|
{
|
|
int n, hflg = 0;
|
|
|
|
USE(c);
|
|
if (getn(varval(STRhistory)) == 0)
|
|
return;
|
|
if (setintr)
|
|
#ifdef BSDSIGS
|
|
(void) sigsetmask(sigblock((sigmask_t) 0) & ~sigmask(SIGINT));
|
|
#else
|
|
(void) sigrelse(SIGINT);
|
|
#endif
|
|
while (*++vp && **vp == '-') {
|
|
Char *vp2 = *vp;
|
|
|
|
while (*++vp2)
|
|
switch (*vp2) {
|
|
case 'c':
|
|
hflg |= HIST_CLEAR;
|
|
break;
|
|
case 'h':
|
|
hflg |= HIST_ONLY;
|
|
break;
|
|
case 'r':
|
|
hflg |= HIST_REV;
|
|
break;
|
|
case 'S':
|
|
hflg |= HIST_SAVE;
|
|
break;
|
|
case 'L':
|
|
hflg |= HIST_LOAD;
|
|
break;
|
|
case 'M':
|
|
hflg |= HIST_MERGE;
|
|
break;
|
|
case 'T':
|
|
hflg |= HIST_TIME;
|
|
break;
|
|
default:
|
|
stderror(ERR_HISTUS, "chrSLMT");
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (hflg & HIST_CLEAR) {
|
|
struct Hist *np, *hp;
|
|
for (hp = &Histlist; (np = hp->Hnext) != NULL;)
|
|
hp->Hnext = np->Hnext, hfree(np);
|
|
}
|
|
|
|
if (hflg & (HIST_LOAD | HIST_MERGE)) {
|
|
loadhist(*vp, (hflg & HIST_MERGE) ? 1 : 0);
|
|
return;
|
|
}
|
|
else if (hflg & HIST_SAVE) {
|
|
rechist(*vp, 1);
|
|
return;
|
|
}
|
|
if (*vp)
|
|
n = getn(*vp);
|
|
else {
|
|
n = getn(varval(STRhistory));
|
|
}
|
|
dohist1(Histlist.Hnext, &n, hflg);
|
|
}
|
|
|
|
static void
|
|
dohist1(hp, np, hflg)
|
|
struct Hist *hp;
|
|
int *np, hflg;
|
|
{
|
|
int print = (*np) > 0;
|
|
|
|
for (; hp != 0; hp = hp->Hnext) {
|
|
(*np)--;
|
|
if ((hflg & HIST_REV) == 0) {
|
|
dohist1(hp->Hnext, np, hflg);
|
|
if (print)
|
|
phist(hp, hflg);
|
|
return;
|
|
}
|
|
if (*np >= 0)
|
|
phist(hp, hflg);
|
|
}
|
|
}
|
|
|
|
static void
|
|
phist(hp, hflg)
|
|
struct Hist *hp;
|
|
int hflg;
|
|
{
|
|
if (hflg & HIST_ONLY) {
|
|
/*
|
|
* Control characters have to be written as is (output_raw).
|
|
* This way one can preserve special characters (like tab) in
|
|
* the history file.
|
|
* From: mveksler@vnet.ibm.com (Veksler Michael)
|
|
*/
|
|
output_raw= 1;
|
|
if (hflg & HIST_TIME)
|
|
/*
|
|
* Make file entry with history time in format:
|
|
* "+NNNNNNNNNN" (10 digits, left padded with ascii '0')
|
|
*/
|
|
|
|
xprintf("#+%010lu\n", hp->Htime);
|
|
|
|
if (HistLit && hp->histline)
|
|
xprintf("%S\n", hp->histline);
|
|
else
|
|
prlex(&hp->Hlex);
|
|
output_raw= 0;
|
|
}
|
|
else {
|
|
Char *cp = str2short("%h\t%T\t%R\n");
|
|
Char buf[INBUFSIZE];
|
|
struct varent *vp = adrof(STRhistory);
|
|
|
|
if (vp && vp->vec != NULL && vp->vec[0] && vp->vec[1])
|
|
cp = vp->vec[1];
|
|
|
|
tprintf(FMT_HISTORY, buf, cp, INBUFSIZE, NULL, hp->Htime, (ptr_t) hp);
|
|
for (cp = buf; *cp;)
|
|
xputwchar(*cp++);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
fmthist(fmt, ptr, buf, bufsiz)
|
|
int fmt;
|
|
ptr_t ptr;
|
|
char *buf;
|
|
size_t bufsiz;
|
|
{
|
|
struct Hist *hp = (struct Hist *) ptr;
|
|
switch (fmt) {
|
|
case 'h':
|
|
(void) xsnprintf(buf, bufsiz, "%6d", hp->Hnum);
|
|
break;
|
|
case 'R':
|
|
if (HistLit && hp->histline)
|
|
(void) xsnprintf(buf, bufsiz, "%S", hp->histline);
|
|
else {
|
|
Char ibuf[INBUFSIZE], *ip;
|
|
char *p;
|
|
(void) sprlex(ibuf, sizeof(ibuf) / sizeof(Char), &hp->Hlex);
|
|
p = buf;
|
|
ip = ibuf;
|
|
do {
|
|
char xbuf[MB_LEN_MAX];
|
|
size_t len;
|
|
|
|
len = one_wctomb(xbuf, CHAR & *ip);
|
|
if ((size_t)((p - buf) + len) >= bufsiz)
|
|
break;
|
|
memcpy(p, xbuf, len);
|
|
p += len;
|
|
} while ((CHAR & *ip++) != 0);
|
|
if (p <= buf + bufsiz - 1)
|
|
*p = '\0';
|
|
}
|
|
break;
|
|
default:
|
|
buf[0] = '\0';
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
void
|
|
rechist(fname, ref)
|
|
Char *fname;
|
|
int ref;
|
|
{
|
|
Char *snum;
|
|
int fp, ftmp, oldidfds;
|
|
struct varent *shist;
|
|
static Char *dumphist[] = {STRhistory, STRmhT, 0, 0};
|
|
|
|
if (fname == NULL && !ref)
|
|
return;
|
|
/*
|
|
* If $savehist is just set, we use the value of $history
|
|
* else we use the value in $savehist
|
|
*/
|
|
if (((snum = varval(STRsavehist)) == STRNULL) &&
|
|
((snum = varval(STRhistory)) == STRNULL))
|
|
snum = STRmaxint;
|
|
|
|
|
|
if (fname == NULL) {
|
|
if ((fname = varval(STRhistfile)) == STRNULL)
|
|
fname = Strspl(varval(STRhome), &STRtildothist[1]);
|
|
else
|
|
fname = Strsave(fname);
|
|
}
|
|
else
|
|
fname = globone(fname, G_ERROR);
|
|
|
|
/*
|
|
* The 'savehist merge' feature is intended for an environment
|
|
* with numerous shells beeing in simultaneous use. Imagine
|
|
* any kind of window system. All these shells 'share' the same
|
|
* ~/.history file for recording their command line history.
|
|
* Currently the automatic merge can only succeed when the shells
|
|
* nicely quit one after another.
|
|
*
|
|
* Users that like to nuke their environment require here an atomic
|
|
* loadhist-creat-dohist(dumphist)-close
|
|
* sequence.
|
|
*
|
|
* jw.
|
|
*/
|
|
/*
|
|
* We need the didfds stuff before loadhist otherwise
|
|
* exec in a script will fail to print if merge is set.
|
|
* From: mveksler@iil.intel.com (Veksler Michael)
|
|
*/
|
|
oldidfds = didfds;
|
|
didfds = 0;
|
|
if ((shist = adrof(STRsavehist)) != NULL && shist->vec != NULL)
|
|
if (shist->vec[1] && eq(shist->vec[1], STRmerge))
|
|
loadhist(fname, 1);
|
|
fp = creat(short2str(fname), 0600);
|
|
if (fp == -1) {
|
|
didfds = oldidfds;
|
|
return;
|
|
}
|
|
ftmp = SHOUT;
|
|
SHOUT = fp;
|
|
dumphist[2] = snum;
|
|
dohist(dumphist, NULL);
|
|
(void) close(fp);
|
|
SHOUT = ftmp;
|
|
didfds = oldidfds;
|
|
xfree((ptr_t) fname);
|
|
}
|
|
|
|
|
|
void
|
|
loadhist(fname, mflg)
|
|
Char *fname;
|
|
int mflg;
|
|
{
|
|
static Char *loadhist_cmd[] = {STRsource, NULL, NULL, NULL};
|
|
loadhist_cmd[1] = mflg ? STRmm : STRmh;
|
|
|
|
if (fname != NULL)
|
|
loadhist_cmd[2] = fname;
|
|
else if ((fname = varval(STRhistfile)) != STRNULL)
|
|
loadhist_cmd[2] = fname;
|
|
else
|
|
loadhist_cmd[2] = STRtildothist;
|
|
|
|
dosource(loadhist_cmd, NULL);
|
|
}
|