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freebsd/contrib/tcsh/tc.prompt.c
Mark Peek 23338178da Import of tcsh-6.14.00
2005-04-24 19:41:08 +00:00

678 lines
17 KiB
C
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/* $Header: /src/pub/tcsh/tc.prompt.c,v 3.53 2005/01/05 18:06:43 christos Exp $ */
/*
* tc.prompt.c: Prompt printing stuff
*/
/*-
* 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: tc.prompt.c,v 3.53 2005/01/05 18:06:43 christos Exp $")
#include "ed.h"
#include "tw.h"
/*
* kfk 21oct1983 -- add @ (time) and / ($cwd) in prompt.
* PWP 4/27/87 -- rearange for tcsh.
* mrdch@com.tau.edu.il 6/26/89 - added ~, T and .# - rearanged to switch()
* instead of if/elseif
* Luke Mewburn, <lukem@cs.rmit.edu.au>
* 6-Sep-91 changed date format
* 16-Feb-94 rewrote directory prompt code, added $ellipsis
* 29-Dec-96 added rprompt support
*/
static const char *month_list[12];
static const char *day_list[7];
void
dateinit()
{
#ifdef notyet
int i;
setlocale(LC_TIME, "");
for (i = 0; i < 12; i++)
xfree((ptr_t) month_list[i]);
month_list[0] = strsave(_time_info->abbrev_month[0]);
month_list[1] = strsave(_time_info->abbrev_month[1]);
month_list[2] = strsave(_time_info->abbrev_month[2]);
month_list[3] = strsave(_time_info->abbrev_month[3]);
month_list[4] = strsave(_time_info->abbrev_month[4]);
month_list[5] = strsave(_time_info->abbrev_month[5]);
month_list[6] = strsave(_time_info->abbrev_month[6]);
month_list[7] = strsave(_time_info->abbrev_month[7]);
month_list[8] = strsave(_time_info->abbrev_month[8]);
month_list[9] = strsave(_time_info->abbrev_month[9]);
month_list[10] = strsave(_time_info->abbrev_month[10]);
month_list[11] = strsave(_time_info->abbrev_month[11]);
for (i = 0; i < 7; i++)
xfree((ptr_t) day_list[i]);
day_list[0] = strsave(_time_info->abbrev_wkday[0]);
day_list[1] = strsave(_time_info->abbrev_wkday[1]);
day_list[2] = strsave(_time_info->abbrev_wkday[2]);
day_list[3] = strsave(_time_info->abbrev_wkday[3]);
day_list[4] = strsave(_time_info->abbrev_wkday[4]);
day_list[5] = strsave(_time_info->abbrev_wkday[5]);
day_list[6] = strsave(_time_info->abbrev_wkday[6]);
#else
month_list[0] = "Jan";
month_list[1] = "Feb";
month_list[2] = "Mar";
month_list[3] = "Apr";
month_list[4] = "May";
month_list[5] = "Jun";
month_list[6] = "Jul";
month_list[7] = "Aug";
month_list[8] = "Sep";
month_list[9] = "Oct";
month_list[10] = "Nov";
month_list[11] = "Dec";
day_list[0] = "Sun";
day_list[1] = "Mon";
day_list[2] = "Tue";
day_list[3] = "Wed";
day_list[4] = "Thu";
day_list[5] = "Fri";
day_list[6] = "Sat";
#endif
}
void
printprompt(promptno, str)
int promptno;
const char *str;
{
static Char *ocp = NULL;
static const char *ostr = NULL;
time_t lclock = time(NULL);
Char *cp;
switch (promptno) {
default:
case 0:
cp = varval(STRprompt);
break;
case 1:
cp = varval(STRprompt2);
break;
case 2:
cp = varval(STRprompt3);
break;
case 3:
if (ocp != NULL) {
cp = ocp;
str = ostr;
}
else
cp = varval(STRprompt);
break;
}
if (promptno < 2) {
ocp = cp;
ostr = str;
}
PromptBuf[0] = '\0';
tprintf(FMT_PROMPT, PromptBuf, cp, 2 * INBUFSIZE - 2, str, lclock, NULL);
if (!editing) {
for (cp = PromptBuf; *cp ; )
(void) putwraw(*cp++);
SetAttributes(0);
flush();
}
RPromptBuf[0] = '\0';
if (promptno == 0) { /* determine rprompt if using main prompt */
cp = varval(STRrprompt);
tprintf(FMT_PROMPT, RPromptBuf, cp, INBUFSIZE - 2, NULL, lclock, NULL);
/* if not editing, put rprompt after prompt */
if (!editing && RPromptBuf[0] != '\0') {
for (cp = RPromptBuf; *cp ; )
(void) putwraw(*cp++);
SetAttributes(0);
putraw(' ');
flush();
}
}
}
void
tprintf(what, buf, fmt, siz, str, tim, info)
int what;
Char *buf;
const Char *fmt;
size_t siz;
const char *str;
time_t tim;
ptr_t info;
{
Char *z, *q;
Char attributes = 0;
static int print_prompt_did_ding = 0;
Char buff[BUFSIZE];
/* Need to be unsigned to avoid sign extension */
const unsigned char *cz;
unsigned char cbuff[BUFSIZE];
Char *p = buf;
Char *ep = &p[siz];
const Char *cp = fmt;
Char Scp;
struct tm *t = localtime(&tim);
/* prompt stuff */
static Char *olddir = NULL, *olduser = NULL;
int updirs;
size_t pdirs, sz;
int l;
for (; *cp; cp++) {
if (p >= ep)
break;
l = NLSSize(cp, -1);
if (l > 1) {
while (l--)
*p++ = attributes | *cp++;
cp--;
continue;
}
if ((*cp == '%') && ! (cp[1] == '\0')) {
cp++;
switch (*cp) {
case 'R':
if (what == FMT_HISTORY) {
fmthist('R', info, (char *) cbuff, sizeof(cbuff));
cz = cbuff;
} else
cz = (const unsigned char *) str;
if (cz != NULL)
for (; *cz && p < ep; p++) {
cz += one_mbtowc(p, (const char *)cz, MB_LEN_MAX);
*p |= attributes;
}
break;
case '#':
*p++ = attributes | ((uid == 0) ? PRCHROOT : PRCH);
break;
case '!':
case 'h':
switch (what) {
case FMT_HISTORY:
fmthist('h', info, (char *) cbuff, sizeof(cbuff));
break;
case FMT_SCHED:
(void) xsnprintf((char *) cbuff, sizeof(cbuff), "%d",
*(int *)info);
break;
default:
(void) xsnprintf((char *) cbuff, sizeof(cbuff), "%d",
eventno + 1);
break;
}
for (cz = cbuff; *cz && p < ep; p++) {
cz += one_mbtowc(p, (const char *)cz, MB_LEN_MAX);
*p |= attributes;
}
break;
case 'T': /* 24 hour format */
case '@':
case 't': /* 12 hour am/pm format */
case 'p': /* With seconds */
case 'P':
{
char ampm = 'a';
int hr = t->tm_hour;
if (p >= ep - 10) break;
/* addition by Hans J. Albertsson */
/* and another adapted from Justin Bur */
if (adrof(STRampm) || (*cp != 'T' && *cp != 'P')) {
if (hr >= 12) {
if (hr > 12)
hr -= 12;
ampm = 'p';
}
else if (hr == 0)
hr = 12;
} /* else do a 24 hour clock */
/* "DING!" stuff by Hans also */
if (t->tm_min || print_prompt_did_ding ||
what != FMT_PROMPT || adrof(STRnoding)) {
if (t->tm_min)
print_prompt_did_ding = 0;
p = Itoa(hr, p, 0, attributes);
*p++ = attributes | ':';
p = Itoa(t->tm_min, p, 2, attributes);
if (*cp == 'p' || *cp == 'P') {
*p++ = attributes | ':';
p = Itoa(t->tm_sec, p, 2, attributes);
}
if (adrof(STRampm) || (*cp != 'T' && *cp != 'P')) {
*p++ = attributes | ampm;
*p++ = attributes | 'm';
}
}
else { /* we need to ding */
int i = 0;
(void) Strcpy(buff, STRDING);
while (buff[i]) {
*p++ = attributes | buff[i++];
}
print_prompt_did_ding = 1;
}
}
break;
case 'M':
#ifndef HAVENOUTMP
if (what == FMT_WHO)
cz = (const unsigned char *) who_info(info, 'M',
(char *) cbuff, sizeof(cbuff));
else
#endif /* HAVENOUTMP */
cz = (const unsigned char *) getenv("HOST");
/*
* Bug pointed out by Laurent Dami <dami@cui.unige.ch>: don't
* derefrence that NULL (if HOST is not set)...
*/
if (cz != NULL)
for (; *cz && p < ep; p++) {
cz += one_mbtowc(p, (const char *)cz, MB_LEN_MAX);
*p |= attributes;
}
break;
case 'm':
#ifndef HAVENOUTMP
if (what == FMT_WHO)
cz = (const unsigned char *) who_info(info, 'm',
(char *) cbuff, sizeof(cbuff));
else
#endif /* HAVENOUTMP */
cz = (const unsigned char *) getenv("HOST");
if (cz != NULL)
for (; *cz && (what == FMT_WHO || *cz != '.') && p < ep;
p++) {
cz += one_mbtowc(p, (const char *)cz, MB_LEN_MAX);
*p |= attributes;
}
break;
/* lukem: new directory prompt code */
case '~':
case '/':
case '.':
case 'c':
case 'C':
Scp = *cp;
if (Scp == 'c') /* store format type (c == .) */
Scp = '.';
if ((z = varval(STRcwd)) == STRNULL)
break; /* no cwd, so don't do anything */
/* show ~ whenever possible - a la dirs */
if (Scp == '~' || Scp == '.' ) {
if (tlength == 0 || olddir != z) {
olddir = z; /* have we changed dir? */
olduser = getusername(&olddir);
}
if (olduser)
z = olddir;
}
updirs = pdirs = 0;
/* option to determine fixed # of dirs from path */
if (Scp == '.' || Scp == 'C') {
int skip;
#ifdef WINNT_NATIVE
Char *oldz = z;
if (z[1] == ':') {
*p++ = attributes | *z++;
*p++ = attributes | *z++;
}
if (*z == '/' && z[1] == '/') {
*p++ = attributes | *z++;
*p++ = attributes | *z++;
do {
*p++ = attributes | *z++;
}while(*z != '/');
}
#endif /* WINNT_NATIVE */
q = z;
while (*z) /* calc # of /'s */
if (*z++ == '/')
updirs++;
#ifdef WINNT_NATIVE
/*
* for format type c, prompt will be following...
* c:/path => c:/path
* c:/path/to => c:to
* //machine/share => //machine/share
* //machine/share/folder => //machine:folder
*/
if (oldz[0] == '/' && oldz[1] == '/' && updirs > 1)
*p++ = attributes | ':';
#endif /* WINNT_NATIVE */
if ((Scp == 'C' && *q != '/'))
updirs++;
if (cp[1] == '0') { /* print <x> or ... */
pdirs = 1;
cp++;
}
if (cp[1] >= '1' && cp[1] <= '9') { /* calc # to skip */
skip = cp[1] - '0';
cp++;
}
else
skip = 1;
updirs -= skip;
while (skip-- > 0) {
while ((z > q) && (*z != '/'))
z--; /* back up */
if (skip && z > q)
z--;
}
if (*z == '/' && z != q)
z++;
} /* . || C */
/* print ~[user] */
if ((olduser) && ((Scp == '~') ||
(Scp == '.' && (pdirs || (!pdirs && updirs <= 0))) )) {
*p++ = attributes | '~';
if (p >= ep) break;
for (q = olduser; *q; *p++ = attributes | *q++)
if (p >= ep) break;
}
/* RWM - tell you how many dirs we've ignored */
/* and add '/' at front of this */
if (updirs > 0 && pdirs) {
if (p >= ep - 5) break;
if (adrof(STRellipsis)) {
*p++ = attributes | '.';
*p++ = attributes | '.';
*p++ = attributes | '.';
} else {
*p++ = attributes | '/';
*p++ = attributes | '<';
if (updirs > 9) {
*p++ = attributes | '9';
*p++ = attributes | '+';
} else
*p++ = attributes | ('0' + updirs);
*p++ = attributes | '>';
}
}
for (; *z ; *p++ = attributes | *z++)
if (p >= ep) break;
break;
/* lukem: end of new directory prompt code */
case 'n':
#ifndef HAVENOUTMP
if (what == FMT_WHO) {
cz = (const unsigned char *) who_info(info, 'n',
(char *) cbuff, sizeof(cbuff));
for (; *cz && p < ep; p++) {
cz += one_mbtowc(p, (const char *)cz, MB_LEN_MAX);
*p |= attributes;
}
}
else
#endif /* HAVENOUTMP */
{
if ((z = varval(STRuser)) != STRNULL)
for (; *z; *p++ = attributes | *z++)
if (p >= ep) break;
}
break;
case 'l':
#ifndef HAVENOUTMP
if (what == FMT_WHO) {
cz = (const unsigned char *) who_info(info, 'l',
(char *) cbuff, sizeof(cbuff));
for (; *cz && p < ep; p++) {
cz += one_mbtowc(p, (const char *)cz, MB_LEN_MAX);
*p |= attributes;
}
}
else
#endif /* HAVENOUTMP */
{
if ((z = varval(STRtty)) != STRNULL)
for (; *z; *p++ = attributes | *z++)
if (p >= ep) break;
}
break;
case 'd':
for (cz = (const unsigned char *) day_list[t->tm_wday];
*cz && p < ep; p++) {
cz += one_mbtowc(p, (const char *)cz, MB_LEN_MAX);
*p |= attributes;
}
break;
case 'D':
if (p >= ep - 3) break;
p = Itoa(t->tm_mday, p, 2, attributes);
break;
case 'w':
if (p >= ep - 5) break;
for (cz = (const unsigned char *) month_list[t->tm_mon];
*cz && p < ep; p++) {
cz += one_mbtowc(p, (const char *)cz, MB_LEN_MAX);
*p |= attributes;
}
break;
case 'W':
if (p >= ep - 3) break;
p = Itoa(t->tm_mon + 1, p, 2, attributes);
break;
case 'y':
if (p >= ep - 3) break;
p = Itoa(t->tm_year % 100, p, 2, attributes);
break;
case 'Y':
if (p >= ep - 5) break;
p = Itoa(t->tm_year + 1900, p, 4, attributes);
break;
case 'S': /* start standout */
attributes |= STANDOUT;
break;
case 'B': /* start bold */
attributes |= BOLD;
break;
case 'U': /* start underline */
attributes |= UNDER;
break;
case 's': /* end standout */
attributes &= ~STANDOUT;
break;
case 'b': /* end bold */
attributes &= ~BOLD;
break;
case 'u': /* end underline */
attributes &= ~UNDER;
break;
case 'L':
ClearToBottom();
break;
case 'j':
{
Char xbuf[128], *ebuf, *xq;
int njobs = -1;
struct process *pp;
for (pp = proclist.p_next; pp; pp = pp->p_next)
njobs++;
/* make sure we have space */
ebuf = Itoa(njobs, buf, 1, attributes);
for (xq = xbuf; xq < ebuf; *p++ = *xq++)
if (p >= ep) break;
break;
}
case '?':
if ((z = varval(STRstatus)) != STRNULL)
for (; *z; *p++ = attributes | *z++)
if (p >= ep) break;
break;
case '$':
sz = ep - p;
(void) expdollar(&p, &cp, &sz, attributes);
/* cp should point the last char of currnet % sequence */
cp--;
break;
case '%':
*p++ = attributes | '%';
break;
case '{': /* literal characters start */
#if LITERAL == 0
/*
* No literal capability, so skip all chars in the literal
* string
*/
while (*cp != '\0' && (*cp != '%' || cp[1] != '}'))
cp++;
#endif /* LITERAL == 0 */
attributes |= LITERAL;
break;
case '}': /* literal characters end */
attributes &= ~LITERAL;
break;
default:
#ifndef HAVENOUTMP
if (*cp == 'a' && what == FMT_WHO) {
cz = (const unsigned char *) who_info(info, 'a',
(char *) cbuff, sizeof(cbuff));
for (; *cz && p < ep; p++) {
cz += one_mbtowc(p, (const char *)cz, MB_LEN_MAX);
*p |= attributes;
}
}
else
#endif /* HAVENOUTMP */
{
if (p >= ep - 3) break;
*p++ = attributes | '%';
*p++ = attributes | *cp;
}
break;
}
}
else if (*cp == '\\' || *cp == '^')
*p++ = attributes | parseescape(&cp);
else if (*cp == HIST) { /* EGS: handle '!'s in prompts */
if (what == FMT_HISTORY)
fmthist('h', info, (char *) cbuff, sizeof(cbuff));
else
(void) xsnprintf((char *) cbuff, sizeof(cbuff), "%d", eventno + 1);
for (cz = cbuff; *cz && p < ep; p++) {
cz += one_mbtowc(p, (const char *)cz, MB_LEN_MAX);
*p |= attributes;
}
}
else
*p++ = attributes | *cp; /* normal character */
}
*p = '\0';
}
Char *
expdollar(dstp, srcp, spp, attr)
Char **dstp;
const Char **srcp;
size_t *spp;
int attr;
{
struct varent *vp;
Char var[MAXVARLEN];
const Char *src = *srcp;
Char *val;
Char *dst = *dstp;
int i, curly = 0;
/* found a variable, expand it */
for (i = 0; i < MAXVARLEN; i++) {
var[i] = *++src & TRIM;
if (i == 0 && var[i] == '{') {
curly = 1;
var[i] = *++src & TRIM;
}
if (!alnum(var[i])) {
var[i] = '\0';
break;
}
}
if (curly && (*src & TRIM) == '}')
src++;
vp = adrof(var);
val = (!vp) ? tgetenv(var) : NULL;
if (vp && vp->vec) {
for (i = 0; vp->vec[i] != NULL; i++) {
for (val = vp->vec[i]; *spp > 0 && *val; (*spp)--)
*dst++ = *val++ | attr;
if (vp->vec[i+1] && *spp > 0) {
*dst++ = ' ' | attr;
(*spp)--;
}
}
}
else if (val) {
for (; *spp > 0 && *val; (*spp)--)
*dst++ = *val++ | attr;
}
else {
**dstp = '\0';
*srcp = src;
return NULL;
}
*dst = '\0';
val = *dstp;
*srcp = src;
*dstp = dst;
return val;
}
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