2.11BSD/src/bin/tcsh/ed.screen.c
/* $Header: /home/hyperion/mu/christos/src/sys/tcsh-6.00/RCS/ed.screen.c,v 3.0 1991/07/04 21:49:28 christos Exp $ */
/*
* ed.screen.c: Editor/t_c_-curses interface
*/
/*-
* 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. 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.
*/
#include "config.h"
#if !defined(lint) && !defined(pdp11)
static char *rcsid()
{ return "$Id: ed.screen.c,v 3.0 1991/07/04 21:49:28 christos Exp $"; }
#endif
#include "sh.h"
#include "ed.h"
#include "ed.defns.h"
/*
* We don't prototype these, cause some systems have them wrong!
*/
extern char *tgoto();
extern char *tgetstr();
extern char *tputs();
extern int tgetent();
extern int tgetflag();
extern int tgetnum();
/* #define DEBUG_LITERAL */
/*
* IMPORTANT NOTE: these routines are allowed to look at the current screen
* and the current possition assuming that it is correct. If this is not
* true, then the update will be WRONG! This is (should be) a valid
* assumption...
*/
#ifndef TC_BUFSIZ
# ifdef pdp11
# define TC_BUFSIZ 1024
# else
# define TC_BUFSIZ 2048
# endif /* pdp11 */
#endif
#define GoodStr(a) (tstr[a].str != NULL && tstr[a].str[0] != '\0')
#define Str(a) tstr[a].str
#define Val(a) tval[a].val
static struct {
char *b_name;
int b_rate;
} baud_rate[] = {
#ifdef B0
{ "0", B0 },
#endif
#ifdef B50
{ "50", B50 },
#endif
#ifdef B75
{ "75", B75 },
#endif
#ifdef B110
{ "110", B110 },
#endif
#ifdef B134
{ "134", B134 },
#endif
#ifdef B150
{ "150", B150 },
#endif
#ifdef B200
{ "200", B200 },
#endif
#ifdef B300
{ "300", B300 },
#endif
#ifdef B600
{ "600", B600 },
#endif
#ifdef B900
{ "900", B900 },
#endif
#ifdef B1200
{ "1200", B1200 },
#endif
#ifdef B1800
{ "1800", B1800 },
#endif
#ifdef B2400
{ "2400", B2400 },
#endif
#ifdef B3600
{ "3600", B3600 },
#endif
#ifdef B4800
{ "4800", B4800 },
#endif
#ifdef B7200
{ "7200", B7200 },
#endif
#ifdef B9600
{ "9600", B9600 },
#endif
#ifdef EXTA
{ "19200", EXTA },
#endif
#ifdef B19200
{ "19200", B19200 },
#endif
#ifdef EXTB
{ "38400", EXTB },
#endif
#ifdef B38400
{ "38400", B38400 },
#endif
{ NULL, 0 }
};
static struct t_c_str {
char *name;
#ifdef TCLONGNAME
char *long_name;
#endif
char *str;
} tstr[] = {
#define T_al 0
{ "al",
#ifdef TCLONGNAME
"add new blank line",
#endif
NULL },
#define T_bl 1
{ "bl",
#ifdef TCLONGNAME
"audible bell",
#endif
NULL },
#define T_cd 2
{ "cd",
#ifdef TCLONGNAME
"clear to bottom",
#endif
NULL },
#define T_ce 3
{ "ce",
#ifdef TCLONGNAME
"clear to end of line",
#endif
NULL },
#define T_ch 4
{ "ch",
#ifdef TCLONGNAME
"cursor to horiz pos",
#endif
NULL },
#define T_cl 5
{ "cl",
#ifdef TCLONGNAME
"clear screen",
#endif
NULL },
#define T_dc 6
{ "dc",
#ifdef TCLONGNAME
"delete a character",
#endif
NULL },
#define T_dl 7
{ "dl",
#ifdef TCLONGNAME
"delete a line",
#endif
NULL },
#define T_dm 8
{ "dm",
#ifdef TCLONGNAME
"start delete mode",
#endif
NULL },
#define T_ed 9
{ "ed",
#ifdef TCLONGNAME
"end delete mode",
#endif
NULL },
#define T_ei 10
{ "ei",
#ifdef TCLONGNAME
"end insert mode",
#endif
NULL },
#define T_fs 11
{ "fs",
#ifdef TCLONGNAME
"cursor from status line",
#endif
NULL },
#define T_ho 12
{ "ho",
#ifdef TCLONGNAME
"home cursor",
#endif
NULL },
#define T_ic 13
{ "ic",
#ifdef TCLONGNAME
"insert character",
#endif
NULL },
#define T_im 14
{ "im",
#ifdef TCLONGNAME
"start insert mode",
#endif
NULL },
#define T_ip 15
{ "ip",
#ifdef TCLONGNAME
"insert padding",
#endif
NULL },
#define T_kd 16
{ "kd",
#ifdef TCLONGNAME
"sends cursor down",
#endif
NULL },
#define T_kl 17
{ "kl",
#ifdef TCLONGNAME
"sends cursor left",
#endif
NULL },
#define T_kr 18
{ "kr",
#ifdef TCLONGNAME
"sends cursor right",
#endif
NULL },
#define T_ku 19
{ "ku",
#ifdef TCLONGNAME
"sends cursor up",
#endif
NULL },
#define T_md 20
{ "md",
#ifdef TCLONGNAME
"begin bold",
#endif
NULL },
#define T_me 21
{ "me",
#ifdef TCLONGNAME
"end attributes",
#endif
NULL },
#define T_nd 22
{ "nd",
#ifdef TCLONGNAME
"non destructive space",
#endif
NULL },
#define T_se 23
{ "se",
#ifdef TCLONGNAME
"end standout",
#endif
NULL },
#define T_so 24
{ "so",
#ifdef TCLONGNAME
"begin standout",
#endif
NULL },
#define T_ts 25
{ "ts",
#ifdef TCLONGNAME
"cursor to status line",
#endif
NULL },
#define T_up 26
{ "up",
#ifdef TCLONGNAME
"cursor up one",
#endif
NULL },
#define T_us 27
{ "us",
#ifdef TCLONGNAME
"begin underline",
#endif
NULL },
#define T_ue 28
{ "ue",
#ifdef TCLONGNAME
"end underline",
#endif
NULL },
#define T_vb 29
{ "vb",
#ifdef TCLONGNAME
"visible bell",
#endif
NULL },
#define T_DC 30
{ "DC",
#ifdef TCLONGNAME
"delete multiple chars",
#endif
NULL },
#define T_DO 31
{ "DO",
#ifdef TCLONGNAME
"cursor down multiple",
#endif
NULL },
#define T_IC 32
{ "IC",
#ifdef TCLONGNAME
"insert multiple chars",
#endif
NULL },
#define T_LE 33
{ "LE",
#ifdef TCLONGNAME
"cursor left multiple",
#endif
NULL },
#define T_RI 34
{ "RI",
#ifdef TCLONGNAME
"cursor right multiple",
#endif
NULL },
#define T_UP 35
{ "UP",
#ifdef TCLONGNAME
"cursor up multiple",
#endif
NULL },
#define T_str 36
{ NULL,
#ifdef TCLONGNAME
NULL,
#endif
NULL }
};
static struct t_c_val {
char *name;
#ifdef TCLONGNAME
char *long_name;
#endif
int val;
} tval[] = {
#define T_pt 0
{ "pt",
#ifdef TCLONGNAME
"can use physical tabs",
#endif
0 },
#define T_li 1
{ "li",
#ifdef TCLONGNAME
"Number of lines",
#endif
0 },
#define T_co 2
{ "co",
#ifdef TCLONGNAME
"Number of columns",
#endif
0 },
#define T_km 3
{ "km",
#ifdef TCLONGNAME
"Has meta key",
#endif
0 },
#define T_val 4
{ NULL,
#ifdef TCLONGNAME
NULL,
#endif
0 }
};
static bool me_all = 0; /* does two or more of the attributes use me */
static void ReBufferDisplay __P((void));
static void TCalloc __P((struct t_c_str *, char *));
static void
TCalloc(t, cap)
struct t_c_str *t;
char *cap;
{
static char t_c__alloc[TC_BUFSIZ];
char termbuf[TC_BUFSIZ];
struct t_c_str *ts;
static int tloc = 0;
int tlen, clen;
if (cap == NULL || *cap == '\0') {
t->str = NULL;
return;
}
else
clen = strlen(cap);
if (t->str == NULL)
tlen = 0;
else
tlen = strlen(t->str);
/*
* New string is shorter; no need to allocate space
*/
if (clen <= tlen) {
(void) strcpy(t->str, cap);
return;
}
/*
* New string is longer; see if we have enough space to append
*/
if (tloc + 3 < TC_BUFSIZ) {
(void) strcpy(t->str = &t_c__alloc[tloc], cap);
tloc += clen + 1; /* one for \0 */
return;
}
/*
* Compact our buffer; no need to check compaction, cause we know it
* fits...
*/
tlen = 0;
for (ts = tstr; ts->name != NULL; ts++)
if (t != ts && ts->str != NULL && ts->str[0] != '\0') {
char *ptr;
for (ptr = ts->str; *ptr != '\0'; termbuf[tlen++] = *ptr++);
termbuf[tlen++] = '\0';
}
copy(t_c__alloc, termbuf, TC_BUFSIZ);
tloc = tlen;
if (tloc + 3 >= TC_BUFSIZ) {
stderror(ERR_NAME | ERR_TCNOSTR);
return;
}
(void) strcpy(t->str = &t_c__alloc[tloc], cap);
tloc += clen + 1; /* one for \0 */
return;
}
/*ARGSUSED*/
void
TellTC(what)
char *what;
{
struct t_c_str *t;
xprintf("\n\tTcsh thinks your terminal has the\n");
xprintf("\tfollowing characteristics:\n\n");
xprintf("\tIt has %d columns and %d lines\n",
Val(T_co), Val(T_li));
xprintf("\tIt has %s meta key\n", T_HasMeta ? "a" : "no");
xprintf("\tIt can%suse tabs\n", T_Tabs ? " " : "not ");
for (t = tstr; t->name != NULL; t++)
#ifdef TCLONGNAME
xprintf("\t%25s (%s) == %s\n", t->long_name, t->name,
t->str && *t->str ? t->str : "(empty)");
#else
xprintf("\t(%s) == %s\n", t->name,
t->str && *t->str ? t->str : "(empty)");
#endif
xprintf("\n");
}
static void
ReBufferDisplay()
{
register int i;
Char **b;
Char **bufp;
b = Display;
Display = NULL;
if (b != NULL) {
for (bufp = b; *bufp != NULL; bufp++)
xfree((ptr_t) * bufp);
xfree((ptr_t) b);
}
b = Vdisplay;
Vdisplay = NULL;
if (b != NULL) {
for (bufp = b; *bufp != NULL; bufp++)
xfree((ptr_t) * bufp);
xfree((ptr_t) b);
}
/* make this public, -1 to avoid wraps */
TermH = Val(T_co) - 1;
TermV = (INBUFSIZ * 4) / TermH + 1;
b = (Char **) xmalloc((size_t) (sizeof(Char *) * (TermV + 1)));
for (i = 0; i < TermV; i++)
b[i] = (Char *) xmalloc((size_t) (sizeof(Char) * (TermH + 1)));
b[TermV] = NULL;
Display = b;
b = (Char **) xmalloc((size_t) (sizeof(Char *) * (TermV + 1)));
for (i = 0; i < TermV; i++)
b[i] = (Char *) xmalloc((size_t) (sizeof(Char) * (TermH + 1)));
b[TermV] = NULL;
Vdisplay = b;
}
void
SetTC(what, how)
char *what, *how;
{
struct t_c_str *ts;
struct t_c_val *tv;
/*
* Do the strings first
*/
setname("settc");
for (ts = tstr; ts->name != NULL; ts++)
if (strcmp(ts->name, what) == 0)
break;
if (ts->name != NULL) {
TCalloc(ts, how);
/*
* Reset variables
*/
if (GoodStr(T_me) && GoodStr(T_ue))
me_all = (strcmp(Str(T_me), Str(T_ue)) == 0);
else
me_all = 0;
if (GoodStr(T_me) && GoodStr(T_se))
me_all |= (strcmp(Str(T_me), Str(T_se)) == 0);
T_CanCEOL = GoodStr(T_ce);
T_CanDel = GoodStr(T_dc) || GoodStr(T_DC);
T_CanIns = GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC);
T_CanUP = GoodStr(T_up) || GoodStr(T_UP);
return;
}
/*
* Do the numeric ones second
*/
for (tv = tval; tv->name != NULL; tv++)
if (strcmp(tv->name, what) == 0)
break;
if (tv->name != NULL) {
if (tv == &tval[T_pt] || tv == &tval[T_km]) {
if (strcmp(how, "yes") == 0)
tv->val = 1;
else if (strcmp(how, "no") == 0)
tv->val = 0;
else {
stderror(ERR_SETTCUS, tv->name);
return;
}
T_Tabs = Val(T_pt);
T_HasMeta = Val(T_km);
return;
}
else {
tv->val = atoi(how);
T_Cols = Val(T_co);
T_Lines = Val(T_li);
if (tv == &tval[T_co])
ReBufferDisplay();
return;
}
}
stderror(ERR_NAME | ERR_TCCAP, what);
return;
}
/*
* Print the t_c_ string out with variable substitution
*/
void
EchoTC(v)
Char **v;
{
char *cap, *scap, cv[BUFSIZ];
int arg_need, arg_cols, arg_rows;
int verbose = 0, silent = 0;
char *area;
static char *fmts = "%s\n", *fmtd = "%d\n";
char buf[TC_BUFSIZ];
area = buf;
setname("echotc");
if (!*v || *v[0] == '\0')
return;
if (v[0][0] == '-') {
switch (v[0][1]) {
case 'v':
verbose = 1;
break;
case 's':
silent = 1;
break;
default:
stderror(ERR_NAME | ERR_TCUSAGE);
break;
}
v++;
}
(void) strcpy(cv, short2str(*v));
if (strcmp(cv, "tabs") == 0) {
xprintf(fmts, T_Tabs ? "yes" : "no");
flush();
return;
}
else if (strcmp(cv, "meta") == 0) {
xprintf(fmts, Val(T_km) ? "yes" : "no");
flush();
return;
}
else if (strcmp(cv, "baud") == 0) {
int i;
for (i = 0; baud_rate[i].b_name != NULL; i++)
if (T_Speed == baud_rate[i].b_rate) {
xprintf(fmts, baud_rate[i].b_name);
flush();
return;
}
xprintf(fmtd, 0);
flush();
return;
}
else if (strcmp(cv, "rows") == 0 || strcmp(cv, "lines") == 0) {
xprintf(fmtd, Val(T_li));
flush();
return;
}
else if (strcmp(cv, "cols") == 0) {
xprintf(fmtd, Val(T_co));
flush();
return;
}
/*
* Count home many values we need for this capability.
*/
scap = tgetstr(cv, &area);
if (!scap || scap[0] == '\0')
stderror(silent ? ERR_SILENT : (ERR_NAME | ERR_TCCAP), cv);
for (cap = scap, arg_need = 0; *cap; cap++)
if (*cap == '%')
switch (*++cap) {
case 'd':
case '2':
case '3':
case '.':
case '+':
arg_need++;
break;
case '%':
case '>':
case 'i':
case 'r':
case 'n':
case 'B':
case 'D':
break;
default:
/*
* hpux has lot's of them...
*/
if (verbose)
stderror(ERR_NAME | ERR_TCPARM, *cap);
/* This is bad, but I won't complain */
break;
}
switch (arg_need) {
case 0:
v++;
if (*v && *v[0])
stderror(silent ? ERR_SILENT : (ERR_NAME | ERR_TCARGS),
cv, arg_need);
(void) tputs(scap, 1, putraw);
break;
case 1:
v++;
if (!*v || *v[0] == '\0')
stderror(ERR_NAME | ERR_TCNARGS, cv, 1);
arg_rows = 0;
arg_cols = atoi(short2str(*v));
v++;
if (*v && *v[0])
stderror(silent ? ERR_SILENT : (ERR_NAME | ERR_TCARGS),
cv, arg_need);
(void) tputs(tgoto(scap, arg_cols, arg_rows), 1, putraw);
break;
default:
/* This is wrong, but I will ignore it... */
if (verbose)
stderror(ERR_NAME | ERR_TCARGS, cv, arg_need);
case 2:
v++;
if (!*v || *v[0] == '\0')
stderror(silent ? ERR_SILENT : (ERR_NAME | ERR_TCNARGS), cv, 2);
arg_cols = atoi(short2str(*v));
v++;
if (!*v || *v[0] == '\0')
stderror(silent ? ERR_SILENT : (ERR_NAME | ERR_TCNARGS), cv, 2);
arg_rows = atoi(short2str(*v));
v++;
if (*v && *v[0])
stderror(silent ? ERR_SILENT : (ERR_NAME | ERR_TCARGS),
cv, arg_need);
(void) tputs(tgoto(scap, arg_cols, arg_rows), arg_rows, putraw);
break;
}
flush();
}
bool GotTermCaps = 0;
void
BindArrowKeys()
{
KEYCMD *map;
int i;
char *p;
static struct {
int key, fun;
} ar[] =
{
{ T_kd, F_DOWN_HIST },
{ T_ku, F_UP_HIST },
{ T_kl, F_CHARBACK },
{ T_kr, F_CHARFWD }
};
if (!GotTermCaps)
return;
map = VImode ? CcAltMap : CcKeyMap;
for (i = 0; i < 4; i++) {
p = tstr[ar[i].key].str;
if (p && *p) {
if (p[1]) {
AddXKeyCmd(str2short(p), ar[i].fun);
map[(unsigned char) *p] = F_XKEY;
}
else if (map[(unsigned char) *p] == F_UNASSIGNED) {
ClearXkey(map, str2short(p));
map[(unsigned char) *p] = ar[i].fun;
}
}
}
}
static Char cur_atr = 0; /* current attributes */
void
SetAttributes(atr)
int atr;
{
atr &= ATTRIBUTES;
if (atr != cur_atr) {
if (me_all && GoodStr(T_me)) {
if ((cur_atr & BOLD) && !(atr & BOLD) ||
(cur_atr & UNDER) && !(atr & UNDER) ||
(cur_atr & STANDOUT) && !(atr & STANDOUT)) {
(void) tputs(Str(T_me), 1, putpure);
cur_atr = 0;
}
}
if ((atr & BOLD) != (cur_atr & BOLD)) {
if (atr & BOLD) {
if (GoodStr(T_md) && GoodStr(T_me)) {
(void) tputs(Str(T_md), 1, putpure);
cur_atr |= BOLD;
}
}
else {
if (GoodStr(T_md) && GoodStr(T_me)) {
(void) tputs(Str(T_me), 1, putpure);
if ((cur_atr & STANDOUT) && GoodStr(T_se)) {
(void) tputs(Str(T_se), 1, putpure);
cur_atr &= ~STANDOUT;
}
if ((cur_atr & UNDER) && GoodStr(T_ue)) {
(void) tputs(Str(T_ue), 1, putpure);
cur_atr &= ~UNDER;
}
cur_atr &= ~BOLD;
}
}
}
if ((atr & STANDOUT) != (cur_atr & STANDOUT)) {
if (atr & STANDOUT) {
if (GoodStr(T_so) && GoodStr(T_se)) {
(void) tputs(Str(T_so), 1, putpure);
cur_atr |= STANDOUT;
}
}
else {
if (GoodStr(T_se)) {
(void) tputs(Str(T_se), 1, putpure);
cur_atr &= ~STANDOUT;
}
}
}
if ((atr & UNDER) != (cur_atr & UNDER)) {
if (atr & UNDER) {
if (GoodStr(T_us) && GoodStr(T_ue)) {
(void) tputs(Str(T_us), 1, putpure);
cur_atr |= UNDER;
}
}
else {
if (GoodStr(T_ue)) {
(void) tputs(Str(T_ue), 1, putpure);
cur_atr &= ~UNDER;
}
}
}
}
}
/* PWP 6-27-88 -- if the tty driver thinks that we can tab, we ask t_c_ */
int
CanWeTab()
{
return (Val(T_pt));
}
void
MoveToLine(where) /* move to line <where> (first line == 0) */
int where; /* as efficiently as possible; */
{
int del, i;
if (where == CursorV)
return;
if (where > TermV) {
#ifdef DEBUG_SCREEN
xprintf("MoveToLine: where is ridiculous: %d\r\n", where);
flush();
#endif
return;
}
if ((del = where - CursorV) > 0) {
if ((del > 1) && GoodStr(T_DO))
(void) tputs(tgoto(Str(T_DO), del, del), del, putpure);
else {
for (i = 0; i < del; i++)
(void) putraw('\n');
CursorH = 0; /* because the \n will become \r\n */
}
}
else { /* del < 0 */
if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
(void) tputs(tgoto(Str(T_UP), -del, -del), -del, putpure);
else {
if (GoodStr(T_up))
for (i = 0; i < -del; i++)
(void) tputs(Str(T_up), 1, putpure);
}
}
CursorV = where; /* now where is here */
}
void
MoveToChar(where) /* move to character position (where) */
int where;
{ /* as efficiently as possible */
int del, i;
mc_again:
if (where == CursorH)
return;
if (where > (TermH + 1)) {
#ifdef DEBUG_SCREEN
xprintf("MoveToChar: where is riduculous: %d\r\n", where);
flush();
#endif
return;
}
if (!where) { /* if where is first column */
(void) putraw('\r'); /* do a CR */
CursorH = 0;
return;
}
del = where - CursorH;
if ((del < -4 || del > 4) && GoodStr(T_ch))
/* go there directly */
(void) tputs(tgoto(Str(T_ch), where, where), where, putpure);
else {
if (del > 0) { /* moving forward */
if ((del > 4) && GoodStr(T_RI))
(void) tputs(tgoto(Str(T_RI), del, del), del, putpure);
else {
if (T_Tabs) { /* if I can do tabs, use them */
if ((CursorH & 0370) != (where & 0370)) {
/* if not within tab stop */
for (i = (CursorH & 0370); i < (where & 0370); i += 8)
(void) putraw('\t'); /* then tab over */
CursorH = where & 0370;
}
}
/* it's usually cheaper to just write the chars, so we do. */
/* NOTE THAT so_write() WILL CHANGE CursorH!!! */
so_write(&Display[CursorV][CursorH], where - CursorH);
}
}
else { /* del < 0 := moving backward */
if ((-del > 4) && GoodStr(T_LE))
(void) tputs(tgoto(Str(T_LE), -del, -del), -del, putpure);
else { /* can't go directly there */
/* if the "cost" is greater than the "cost" from col 0 */
if (T_Tabs ? (-del > ((where >> 3) + (where & 07)))
: (-del > where)) {
(void) putraw('\r'); /* do a CR */
CursorH = 0;
goto mc_again; /* and try again */
}
for (i = 0; i < -del; i++)
(void) putraw('\b');
}
}
}
CursorH = where; /* now where is here */
}
void
so_write(cp, n)
register Char *cp;
register int n;
{
if (n <= 0)
return; /* catch bugs */
if (n > (TermH + 1)) {
#ifdef DEBUG_SCREEN
xprintf("so_write: n is riduculous: %d\r\n", n);
flush();
#endif
return;
}
do {
if (*cp & LITERAL) {
extern Char *litptr[];
Char *d;
#ifdef DEBUG_LITERAL
xprintf("so: litnum %d, litptr %x\r\n",
*cp & CHAR, litptr[*cp & CHAR]);
#endif
for (d = litptr[*cp++ & CHAR]; *d & LITERAL; d++)
(void) putraw(*d & CHAR);
(void) putraw(*d);
}
else
(void) putraw(*cp++);
CursorH++;
} while (--n);
}
void
DeleteChars(num) /* deletes <num> characters */
int num;
{
if (num <= 0)
return;
if (!T_CanDel) {
#ifdef DEBUG_EDIT
xprintf(" ERROR: cannot delete \n");
#endif
flush();
return;
}
if (num > TermH) {
#ifdef DEBUG_SCREEN
xprintf("DeleteChars: num is riduculous: %d\r\n", num);
flush();
#endif
return;
}
if (GoodStr(T_DC)) /* if I have multiple delete */
if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more expen. */
(void) tputs(tgoto(Str(T_DC), num, num), num, putpure);
return;
}
if (GoodStr(T_dm)) /* if I have delete mode */
(void) tputs(Str(T_dm), 1, putpure);
if (GoodStr(T_dc)) /* else do one at a time */
while (num--)
(void) tputs(Str(T_dc), 1, putpure);
if (GoodStr(T_ed)) /* if I have delete mode */
(void) tputs(Str(T_ed), 1, putpure);
}
void
Insert_write(cp, num) /* Puts terminal in insert character mode, */
register Char *cp;
register int num; /* or inserts num characters in the line */
{
if (num <= 0)
return;
if (!T_CanIns) {
#ifdef DEBUG_EDIT
xprintf(" ERROR: cannot insert \n");
#endif
flush();
return;
}
if (num > TermH) {
#ifdef DEBUG_SCREEN
xprintf("StartInsert: num is riduculous: %d\r\n", num);
flush();
#endif
return;
}
if (GoodStr(T_IC)) /* if I have multiple insert */
if ((num > 1) || !GoodStr(T_ic)) { /* if ic would be more expen. */
(void) tputs(tgoto(Str(T_IC), num, num), num, putpure);
so_write(cp, num); /* this updates CursorH */
return;
}
if (GoodStr(T_im)) /* if I have insert mode */
(void) tputs(Str(T_im), 1, putpure);
do {
if (GoodStr(T_ic)) /* have to make num chars insert */
(void) tputs(Str(T_ic), 1, putpure); /* insert a char */
(void) putraw(*cp++);
CursorH++;
if (GoodStr(T_ip)) /* have to make num chars insert */
(void) tputs(Str(T_ip), 1, putpure);/* pad the inserted char */
} while (--num);
if (GoodStr(T_ei))
(void) tputs(Str(T_ei), 1, putpure);
}
void
ClearEOL(num) /* clear to end of line. There are num */
int num; /* characters to clear */
{
register int i;
if (T_CanCEOL && GoodStr(T_ce))
(void) tputs(Str(T_ce), 1, putpure);
else {
for (i = 0; i < num; i++)
(void) putraw(' ');
CursorH += num; /* have written num spaces */
}
}
void
ClearScreen()
{ /* clear the whole screen and home */
if (GoodStr(T_cl))
/* send the clear screen code */
(void) tputs(Str(T_cl), Val(T_li), putpure);
else if (GoodStr(T_ho) && GoodStr(T_cd)) {
(void) tputs(Str(T_ho), Val(T_li), putpure); /* home */
/* clear to bottom of screen */
(void) tputs(Str(T_cd), Val(T_li), putpure);
}
else {
(void) putraw('\r');
(void) putraw('\n');
}
}
void
Beep()
{ /* produce a sound */
if (adrof(STRnobeep))
return;
if (GoodStr(T_vb) && adrof(STRvisiblebell))
(void) tputs(Str(T_vb), 1, putpure); /* visible bell */
else if (GoodStr(T_bl))
/* what t_c_ says we should use */
(void) tputs(Str(T_bl), 1, putpure);
else
(void) putraw('\007'); /* an ASCII bell; ^G */
}
void
ClearToBottom()
{ /* clear to the bottom of the screen */
if (GoodStr(T_cd))
(void) tputs(Str(T_cd), Val(T_li), putpure);
else if (GoodStr(T_ce))
(void) tputs(Str(T_ce), Val(T_li), putpure);
}
void
GetTermCaps()
{ /* read in the needed terminal capabilites */
register int i;
char *ptr;
char buf[TC_BUFSIZ];
static char bp[TC_BUFSIZ];
char *area;
extern char *getenv();
struct t_c_str *t;
#ifdef SIG_WINDOW
#ifdef BSDSIGS
sigmask_t omask;
#endif /* BSDSIGS */
int lins, cols;
/* don't want to confuse things here */
#ifdef BSDSIGS
omask = sigblock(sigmask(SIG_WINDOW)) & ~sigmask(SIG_WINDOW);
#else /* BSDSIGS */
(void) sighold(SIG_WINDOW);
#endif /* BSDSIGS */
#endif /* SIG_WINDOW */
area = buf;
GotTermCaps = 1;
setname("gett_c_s");
ptr = getenv("TERM");
#ifdef apollo
/*
* If we are on a pad, we pretend that we are dumb. Otherwise the t_c_
* library will put us in a weird screen mode, thinking that we are going
* to use curses
*/
if (isapad())
ptr = "dumb";
#endif
if (!ptr || !ptr[0])
ptr = "dumb";
setzero(bp, TC_BUFSIZ);
i = tgetent(bp, ptr);
if (i <= 0) {
if (i == -1) {
#if SVID == 0
xprintf("tcsh: Cannot open /etc/t_c_.\n");
}
else if (i == 0) {
#endif /* SVID */
xprintf("tcsh: No entry for terminal type \"%s\"\n",
getenv("TERM"));
}
xprintf("tcsh: using dumb terminal settings.\n");
Val(T_co) = 80; /* do a dumb terminal */
Val(T_pt) = Val(T_km) = Val(T_li) = 0;
for (t = tstr; t->name != NULL; t++)
TCalloc(t, NULL);
}
else {
/* Can we tab */
Val(T_pt) = tgetflag("pt") && !tgetflag("xt");
/* do we have a meta? */
Val(T_km) = (tgetflag("km") || tgetflag("MT"));
Val(T_co) = tgetnum("co");
Val(T_li) = tgetnum("li");
for (t = tstr; t->name != NULL; t++)
TCalloc(t, tgetstr(t->name, &area));
}
if (Val(T_co) < 2)
Val(T_co) = 80; /* just in case */
if (Val(T_li) < 1)
Val(T_li) = 24;
T_Cols = Val(T_co);
T_Lines = Val(T_li);
if (T_Tabs)
T_Tabs = Val(T_pt);
T_HasMeta = Val(T_km);
T_CanCEOL = GoodStr(T_ce);
T_CanDel = GoodStr(T_dc) || GoodStr(T_DC);
T_CanIns = GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC);
T_CanUP = GoodStr(T_up) || GoodStr(T_UP);
if (GoodStr(T_me) && GoodStr(T_ue))
me_all = (strcmp(Str(T_me), Str(T_ue)) == 0);
else
me_all = 0;
if (GoodStr(T_me) && GoodStr(T_se))
me_all |= (strcmp(Str(T_me), Str(T_se)) == 0);
#ifdef DEBUG_SCREEN
if (!T_CanUP) {
xprintf("tcsh: WARNING: Your terminal cannot move up.\n");
xprintf("Editing may be odd for long lines.\n");
}
if (!T_CanCEOL)
xprintf("no clear EOL capability.\n");
if (!T_CanDel)
xprintf("no delete char capability.\n");
if (!T_CanIns)
xprintf("no insert char capability.\n");
#endif /* DEBUG_SCREEN */
#ifdef SIG_WINDOW
(void) GetSize(&lins, &cols); /* get the correct window size */
ChangeSize(lins, cols);
# ifdef BSDSIGS
(void) sigsetmask(omask); /* can change it again */
# else /* BSDSIGS */
(void) sigrelse(SIG_WINDOW);
# endif /* BSDSIGS */
#else /* SIG_WINDOW */
ChangeSize(Val(T_li), Val(T_co));
#endif /* SIG_WINDOW */
BindArrowKeys();
}
#ifdef SIG_WINDOW
/* GetSize():
* Return the new window size in lines and cols, and
* true if the size was changed.
*/
int
GetSize(lins, cols)
int *lins, *cols;
{
*cols = Val(T_co);
*lins = Val(T_li);
#ifdef TIOCGWINSZ
# ifndef lint
{
struct winsize ws; /* from 4.3 */
if (ioctl(SHOUT, TIOCGWINSZ, (ioctl_t) & ws) < 0)
return (0);
if (ws.ws_col)
*cols = ws.ws_col;
if (ws.ws_row)
*lins = ws.ws_row;
}
# endif
#else /* TIOCGWINSZ */
# ifdef TIOCGSIZE
{
struct ttysize ts; /* from Sun */
if (ioctl(SHOUT, TIOCGSIZE, (ioctl_t) & ts) < 0)
return;
if (ts.ts_cols)
*cols = ts.ts_cols;
if (ts.ts_lines)
*lins = ts.ts_lines;
}
# endif /* TIOCGSIZE */
#endif /* TIOCGWINSZ */
if (*cols < 2)
*cols = 80; /* just in case */
if (*lins < 1)
*lins = 24;
return (Val(T_co) != *cols || Val(T_li) != *lins);
}
#endif /* SIGWINDOW */
void
ChangeSize(lins, cols)
int lins, cols;
{
Val(T_co) = cols;
Val(T_li) = lins;
#ifdef SIG_WINDOW
{
Char buf[10];
char *tptr;
if (getenv("COLUMNS")) {
Itoa(Val(T_co), buf);
Setenv(STRCOLUMNS, buf);
}
if (getenv("LINES")) {
Itoa(Val(T_li), buf);
Setenv(STRLINES, buf);
}
if (tptr = getenv("TERMCAP")) {
Char t_c_[1024], backup[1024], *ptr;
int i;
ptr = str2short(tptr);
(void) Strncpy(t_c_, ptr, 1024);
t_c_[1023] = '\0';
/* update t_c_ string; first do columns */
buf[0] = 'c';
buf[1] = 'o';
buf[2] = '#';
buf[3] = '\0';
if ((ptr = Strstr(t_c_, buf)) == NULL) {
(void) Strcpy(backup, t_c_);
}
else {
i = ptr - t_c_ + Strlen(buf);
(void) Strncpy(backup, t_c_, i);
backup[i] = '\0';
Itoa(Val(T_co), buf);
(void) Strcat(backup + i, buf);
ptr = Strchr(ptr, ':');
(void) Strcat(backup, ptr);
}
/* now do lines */
buf[0] = 'l';
buf[1] = 'i';
buf[2] = '#';
buf[3] = '\0';
if ((ptr = Strstr(backup, buf)) == NULL) {
(void) Strcpy(t_c_, backup);
}
else {
i = ptr - backup + Strlen(buf);
(void) Strncpy(t_c_, backup, i);
t_c_[i] = '\0';
Itoa(Val(T_li), buf);
(void) Strcat(t_c_, buf);
ptr = Strchr(ptr, ':');
(void) Strcat(t_c_, ptr);
}
Setenv(STRTRMCAP, t_c_);
}
}
#endif /* SIG_WINDOW */
ReBufferDisplay(); /* re-make display buffers */
ClearDisp();
}