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charproc.c
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charproc.c
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/*
* @Source: /orpheus/u1/X11/clients/xterm/RCS/charproc.c,v @
* @Header: charproc.c,v 1.36 87/09/09 16:40:30 swick Exp @
*/
#include <X11/copyright.h>
/*
* Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
*
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of Digital Equipment
* Corporation not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior permission.
*
*
* DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
* DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
* ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/* charproc.c */
#include <stdio.h>
#include <sgtty.h>
#include <ctype.h>
#include <errno.h>
#include <setjmp.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Intrinsic.h>
#include <X11/Xatom.h>
#include "ptyx.h"
#include "VTparse.h"
#include "data.h"
#include "error.h"
#ifdef MODEMENU
#include "menu.h"
#endif MODEMENU
extern void exit(), bcopy();
#define DEFAULT -1
#define TEXT_BUF_SIZE 256
#define TRACKTIMESEC 4L
#define TRACKTIMEUSEC 0L
#define doinput() (bcnt-- > 0 ? *bptr++ : in_put())
#ifndef lint
static char rcs_id[] = "@Header: charproc.c,v 1.36 87/09/09 16:40:30 swick Exp @";
#endif lint
static long arg;
static int nparam;
static ANSI reply;
static int param[NPARAM];
static unsigned long ctotal;
static unsigned long ntotal;
static jmp_buf vtjmpbuf;
extern XrmNameList nameList;
extern XrmClassList classList;
extern int groundtable[];
extern int csitable[];
extern int dectable[];
extern int eigtable[];
extern int esctable[];
extern int iestable[];
extern int igntable[];
extern int scrtable[];
extern int scstable[];
/* event handlers */
extern XtEventReturnCode HandleKeyPressed();
extern XtEventReturnCode EventDoNothing();
extern XtEventReturnCode HandleEnterWindow();
extern XtEventReturnCode HandleLeaveWindow();
extern XtEventReturnCode HandleFocusChange();
extern XtEventReturnCode VTButtonPressed();
extern XtEventReturnCode VTMouseMoved();
extern XtEventReturnCode VTButtonReleased();
VTparse()
{
register TScreen *screen = &term.screen;
register int *parsestate = groundtable;
register int c;
register char *cp;
register int row, col, top, bot, scstype;
extern int bitset(), bitclr(), finput(), TrackMouse();
if(setjmp(vtjmpbuf))
parsestate = groundtable;
for( ; ; )
switch(parsestate[c = doinput()]) {
case CASE_GROUND_STATE:
/* exit ignore mode */
parsestate = groundtable;
break;
case CASE_IGNORE_STATE:
/* Ies: ignore anything else */
parsestate = igntable;
break;
case CASE_IGNORE_ESC:
/* Ign: escape */
parsestate = iestable;
break;
case CASE_IGNORE:
/* Ignore character */
break;
case CASE_BELL:
/* bell */
Bell();
break;
case CASE_BS:
/* backspace */
CursorBack(screen, 1);
break;
case CASE_CR:
/* carriage return */
CarriageReturn(screen);
break;
case CASE_ESC:
/* escape */
parsestate = esctable;
break;
case CASE_VMOT:
/*
* form feed, line feed, vertical tab
*/
Index(screen, 1);
if (term.flags & LINEFEED)
CarriageReturn(screen);
if(screen->display->qlen > 0 ||
(ioctl(screen->display->fd, FIONREAD, (char *) &arg), arg) > 0)
xevents();
break;
case CASE_TAB:
/* tab */
screen->cur_col = TabNext(term.tabs, screen->cur_col);
if (screen->cur_col > screen->max_col)
screen->cur_col = screen->max_col;
break;
case CASE_SI:
screen->curgl = 0;
break;
case CASE_SO:
screen->curgl = 1;
break;
case CASE_SCR_STATE:
/* enter scr state */
parsestate = scrtable;
break;
case CASE_SCS0_STATE:
/* enter scs state 0 */
scstype = 0;
parsestate = scstable;
break;
case CASE_SCS1_STATE:
/* enter scs state 1 */
scstype = 1;
parsestate = scstable;
break;
case CASE_SCS2_STATE:
/* enter scs state 2 */
scstype = 2;
parsestate = scstable;
break;
case CASE_SCS3_STATE:
/* enter scs state 3 */
scstype = 3;
parsestate = scstable;
break;
case CASE_ESC_IGNORE:
/* unknown escape sequence */
parsestate = eigtable;
break;
case CASE_ESC_DIGIT:
/* digit in csi or dec mode */
if((row = param[nparam - 1]) == DEFAULT)
row = 0;
param[nparam - 1] = 10 * row + (c - '0');
break;
case CASE_ESC_SEMI:
/* semicolon in csi or dec mode */
param[nparam++] = DEFAULT;
break;
case CASE_DEC_STATE:
/* enter dec mode */
parsestate = dectable;
break;
case CASE_ICH:
/* ICH */
if((c = param[0]) < 1)
c = 1;
InsertChar(screen, c);
parsestate = groundtable;
break;
case CASE_CUU:
/* CUU */
if((c = param[0]) < 1)
c = 1;
CursorUp(screen, c);
parsestate = groundtable;
break;
case CASE_CUD:
/* CUD */
if((c = param[0]) < 1)
c = 1;
CursorDown(screen, c);
parsestate = groundtable;
break;
case CASE_CUF:
/* CUF */
if((c = param[0]) < 1)
c = 1;
CursorForward(screen, c);
parsestate = groundtable;
break;
case CASE_CUB:
/* CUB */
if((c = param[0]) < 1)
c = 1;
CursorBack(screen, c);
parsestate = groundtable;
break;
case CASE_CUP:
/* CUP | HVP */
if((row = param[0]) < 1)
row = 1;
if(nparam < 2 || (col = param[1]) < 1)
col = 1;
CursorSet(screen, row-1, col-1, term.flags);
parsestate = groundtable;
break;
case CASE_ED:
/* ED */
switch (param[0]) {
case DEFAULT:
case 0:
ClearBelow(screen);
break;
case 1:
ClearAbove(screen);
break;
case 2:
ClearScreen(screen);
break;
}
parsestate = groundtable;
break;
case CASE_EL:
/* EL */
switch (param[0]) {
case DEFAULT:
case 0:
ClearRight(screen);
break;
case 1:
ClearLeft(screen);
break;
case 2:
ClearLine(screen);
break;
}
parsestate = groundtable;
break;
case CASE_IL:
/* IL */
if((c = param[0]) < 1)
c = 1;
InsertLine(screen, c);
parsestate = groundtable;
break;
case CASE_DL:
/* DL */
if((c = param[0]) < 1)
c = 1;
DeleteLine(screen, c);
parsestate = groundtable;
break;
case CASE_DCH:
/* DCH */
if((c = param[0]) < 1)
c = 1;
DeleteChar(screen, c);
parsestate = groundtable;
break;
case CASE_TRACK_MOUSE:
/* Track mouse as long as in window and between
specified rows */
TrackMouse(param[0], param[2]-1, param[1]-1,
param[3]-1, param[4]-2);
break;
case CASE_DA1:
/* DA1 */
if (param[0] <= 0) { /* less than means DEFAULT */
reply.a_type = CSI;
reply.a_pintro = '?';
reply.a_nparam = 2;
reply.a_param[0] = 1; /* VT102 */
reply.a_param[1] = 2; /* VT102 */
reply.a_inters = 0;
reply.a_final = 'c';
unparseseq(&reply, screen->respond);
}
parsestate = groundtable;
break;
case CASE_TBC:
/* TBC */
if ((c = param[0]) <= 0) /* less than means default */
TabClear(term.tabs, screen->cur_col);
else if (c == 3)
TabZonk(term.tabs);
parsestate = groundtable;
break;
case CASE_SET:
/* SET */
modes(&term, bitset);
parsestate = groundtable;
break;
case CASE_RST:
/* RST */
modes(&term, bitclr);
parsestate = groundtable;
break;
case CASE_SGR:
/* SGR */
for (c=0; c<nparam; ++c) {
switch (param[c]) {
case DEFAULT:
case 0:
term.flags &= ~(INVERSE|BOLD|UNDERLINE);
break;
case 1:
case 5: /* Blink, really. */
term.flags |= BOLD;
break;
case 4: /* Underscore */
term.flags |= UNDERLINE;
break;
case 7:
term.flags |= INVERSE;
}
}
parsestate = groundtable;
break;
case CASE_CPR:
/* CPR */
if ((c = param[0]) == 5) {
reply.a_type = CSI;
reply.a_pintro = 0;
reply.a_nparam = 1;
reply.a_param[0] = 0;
reply.a_inters = 0;
reply.a_final = 'n';
unparseseq(&reply, screen->respond);
} else if (c == 6) {
reply.a_type = CSI;
reply.a_pintro = 0;
reply.a_nparam = 2;
reply.a_param[0] = screen->cur_row+1;
reply.a_param[1] = screen->cur_col+1;
reply.a_inters = 0;
reply.a_final = 'R';
unparseseq(&reply, screen->respond);
}
parsestate = groundtable;
break;
case CASE_DECSTBM:
/* DECSTBM */
if((top = param[0]) < 1)
top = 1;
if(nparam < 2 || (bot = param[1]) == DEFAULT
|| bot > screen->max_row + 1
|| bot == 0)
bot = screen->max_row+1;
if (bot > top) {
if(screen->scroll_amt)
FlushScroll(screen);
screen->top_marg = top-1;
screen->bot_marg = bot-1;
CursorSet(screen, 0, 0, term.flags);
}
parsestate = groundtable;
break;
case CASE_DECREQTPARM:
/* DECREQTPARM */
if ((c = param[0]) == DEFAULT)
c = 0;
if (c == 0 || c == 1) {
reply.a_type = CSI;
reply.a_pintro = 0;
reply.a_nparam = 7;
reply.a_param[0] = c + 2;
reply.a_param[1] = 1; /* no parity */
reply.a_param[2] = 1; /* eight bits */
reply.a_param[3] = 112; /* transmit 9600 baud */
reply.a_param[4] = 112; /* receive 9600 baud */
reply.a_param[5] = 1; /* clock multiplier ? */
reply.a_param[6] = 0; /* STP flags ? */
reply.a_inters = 0;
reply.a_final = 'x';
unparseseq(&reply, screen->respond);
}
parsestate = groundtable;
break;
case CASE_DECSET:
/* DECSET */
dpmodes(&term, bitset);
parsestate = groundtable;
if(screen->TekEmu)
return;
break;
case CASE_DECRST:
/* DECRST */
dpmodes(&term, bitclr);
parsestate = groundtable;
break;
case CASE_DECALN:
/* DECALN */
if(screen->cursor_state)
HideCursor();
for(row = screen->max_row ; row >= 0 ; row--) {
bzero(screen->buf[2 * row + 1],
col = screen->max_col + 1);
for(cp = screen->buf[2 * row] ; col > 0 ; col--)
*cp++ = 'E';
}
ScrnRefresh(screen, 0, 0, screen->max_row + 1,
screen->max_col + 1);
parsestate = groundtable;
break;
case CASE_GSETS:
screen->gsets[scstype] = c;
parsestate = groundtable;
break;
case CASE_DECSC:
/* DECSC */
CursorSave(&term, &screen->sc);
parsestate = groundtable;
break;
case CASE_DECRC:
/* DECRC */
CursorRestore(&term, &screen->sc);
parsestate = groundtable;
break;
case CASE_DECKPAM:
/* DECKPAM */
term.keyboard.flags |= KYPD_APL;
parsestate = groundtable;
break;
case CASE_DECKPNM:
/* DECKPNM */
term.keyboard.flags &= ~KYPD_APL;
parsestate = groundtable;
break;
case CASE_IND:
/* IND */
Index(screen, 1);
if(screen->display->qlen > 0 ||
(ioctl(screen->display->fd, FIONREAD, (char *)&arg), arg) > 0)
xevents();
parsestate = groundtable;
break;
case CASE_NEL:
/* NEL */
Index(screen, 1);
CarriageReturn(screen);
if(screen->display->qlen > 0 ||
(ioctl(screen->display->fd, FIONREAD, (char *)&arg), arg) > 0)
xevents();
parsestate = groundtable;
break;
case CASE_HTS:
/* HTS */
TabSet(term.tabs, screen->cur_col);
parsestate = groundtable;
break;
case CASE_RI:
/* RI */
RevIndex(screen, 1);
parsestate = groundtable;
break;
case CASE_SS2:
/* SS2 */
screen->curss = 2;
parsestate = groundtable;
break;
case CASE_SS3:
/* SS3 */
screen->curss = 3;
parsestate = groundtable;
break;
case CASE_CSI_STATE:
/* enter csi state */
nparam = 1;
param[0] = DEFAULT;
parsestate = csitable;
break;
case CASE_OSC:
/* do osc escapes */
do_osc(finput);
parsestate = groundtable;
break;
case CASE_RIS:
/* RIS */
VTReset(TRUE);
parsestate = groundtable;
break;
case CASE_LS2:
/* LS2 */
screen->curgl = 2;
parsestate = groundtable;
break;
case CASE_LS3:
/* LS3 */
screen->curgl = 3;
parsestate = groundtable;
break;
case CASE_LS3R:
/* LS3R */
screen->curgr = 3;
parsestate = groundtable;
break;
case CASE_LS2R:
/* LS2R */
screen->curgr = 2;
parsestate = groundtable;
break;
case CASE_LS1R:
/* LS1R */
screen->curgr = 1;
parsestate = groundtable;
break;
case CASE_XTERM_SAVE:
savemodes(&term);
parsestate = groundtable;
break;
case CASE_XTERM_RESTORE:
restoremodes(&term);
parsestate = groundtable;
break;
case CASE_PRINT:
/* printable characters */
top = bcnt > TEXT_BUF_SIZE ? TEXT_BUF_SIZE : bcnt;
cp = bptr;
*--bptr = c;
while(top > 0 && isprint(*cp)) {
top--;
bcnt--;
cp++;
}
if(screen->curss) {
dotext(screen, term.flags,
screen->gsets[screen->curss], bptr, bptr + 1);
screen->curss = 0;
bptr++;
}
if(bptr < cp)
dotext(screen, term.flags,
screen->gsets[screen->curgl], bptr, cp);
bptr = cp;
break;
}
}
finput()
{
return(doinput());
}
static int select_mask;
static int write_mask;
static char v_buffer[4096];
static char *v_bufstr;
static char *v_bufptr;
static char *v_bufend;
#define ptymask() (v_bufptr > v_bufstr ? pty_mask : 0)
v_write(f, d, l)
int f;
char *d;
int l;
{
int r;
int c = l;
if (!v_bufstr) {
v_bufstr = v_buffer;
v_bufptr = v_buffer;
v_bufend = &v_buffer[4096];
}
if ((1 << f) != pty_mask)
return(write(f, d, l));
if (v_bufptr > v_bufstr) {
if (l) {
if (v_bufend > v_bufptr + l) {
bcopy(d, v_bufptr, l);
v_bufptr += l;
} else {
if (v_bufstr != v_buffer) {
bcopy(v_bufstr, v_buffer,
v_bufptr - v_bufstr);
v_bufptr -= v_bufstr - v_buffer;
v_bufstr = v_buffer;
}
if (v_bufend > v_bufptr + l) {
bcopy(d, v_bufptr, l);
v_bufptr += l;
} else if (v_bufptr < v_bufend) {
fprintf(stderr, "Out of buffer space\n");
c = v_bufend - v_bufptr;
bcopy(d, v_bufptr, c);
v_bufptr = v_bufend;
} else {
fprintf(stderr, "Out of buffer space\n");
c = 0;
}
}
}
if (v_bufptr > v_bufstr) {
if ((r = write(f, v_bufstr, v_bufptr - v_bufstr)) <= 0)
return(r);
if ((v_bufstr += r) >= v_bufptr)
v_bufstr = v_bufptr = v_buffer;
}
} else if (l) {
if ((r = write(f, d, l)) < 0) {
if (errno == EWOULDBLOCK)
r = 0;
else if (errno == EINTR)
r = 0;
else
return(r);
}
if (l - r) {
if (l - r > v_bufend - v_buffer) {
fprintf(stderr, "Truncating to %d\n",
v_bufend - v_buffer);
l = (v_bufend - v_buffer) + r;
}
bcopy(d + r, v_buffer, l - r);
v_bufstr = v_buffer;
v_bufptr = v_buffer + (l - r);
}
}
return(c);
}
in_put()
{
register TScreen *screen = &term.screen;
register char *cp;
register int i;
static struct timeval trackTimeOut;
select_mask = pty_mask; /* force initial read */
for( ; ; ) {
if((select_mask & pty_mask) && (eventMode == NORMAL)) {
if(screen->logging)
FlushLog(screen);
if((bcnt = read(screen->respond, bptr = buffer,
BUF_SIZE)) < 0) {
if(errno == EIO && am_slave)
exit(0);
else if(errno != EWOULDBLOCK)
Panic(
"input: read returned unexpected error (%d)\n",
errno);
} else if(bcnt == 0)
Panic("input: read returned zero\n", 0);
else {
/* strip parity bit */
for(i = bcnt, cp = bptr ; i > 0 ; i--)
*cp++ &= CHAR;
if(screen->scrollWindow && screen->scrollinput &&
screen->topline < 0)
/* Scroll to bottom */
WindowScroll(screen, 0);
break;
}
}
if(screen->scroll_amt)
FlushScroll(screen);
if(screen->cursor_set && (screen->cursor_col != screen->cur_col
|| screen->cursor_row != screen->cur_row)) {
if(screen->cursor_state)
HideCursor();
ShowCursor();
} else if(screen->cursor_set != screen->cursor_state) {
if(screen->cursor_set)
ShowCursor();
else
HideCursor();
}
if (waitingForTrackInfo) {
trackTimeOut.tv_sec = TRACKTIMESEC;
trackTimeOut.tv_usec = TRACKTIMEUSEC;
select_mask = pty_mask;
if ((i = select(max_plus1, &select_mask, (int *)NULL, (int *)NULL,
&trackTimeOut)) < 0) {
if (errno != EINTR)
SysError(ERROR_SELECT);
continue;
} else if (i == 0) {
/* emacs just isn't replying, go on */
waitingForTrackInfo = 0;
Bell();
select_mask = Select_mask;
}
} else if (QLength(screen->display))
select_mask = X_mask;
else {
write_mask = ptymask();
XFlush(screen->display);
select_mask = Select_mask;
if (eventMode != NORMAL)
select_mask = X_mask;
if(select(max_plus1, &select_mask, &write_mask,
(int *)NULL, (struct timeval *) NULL) < 0){
if (errno != EINTR)
SysError(ERROR_SELECT);
continue;
}
}
if (write_mask & ptymask())
v_write(screen->respond, 0, 0); /* flush buffer */
if(select_mask & X_mask) {
if (bcnt <= 0) {
bcnt = 0;
bptr = buffer;
}
xevents();
if (bcnt > 0)
break;
}
}
bcnt--;
return(*bptr++);
}
/*
* process a string of characters according to the character set indicated
* by charset. worry about end of line conditions (wraparound if selected).
*/
dotext(screen, flags, charset, buf, ptr)
register TScreen *screen;
unsigned flags;
char charset;
char *buf;
char *ptr;
{
register char *s;
register int len;
register int n;
register int next_col;
switch (charset) {
case 'A': /* United Kingdom set */
for (s=buf; s<ptr; ++s)
if (*s == '#')
*s = '\036'; /* UK pound sign*/
break;
case 'B': /* ASCII set */
break;
case '0': /* special graphics (line drawing) */
for (s=buf; s<ptr; ++s)
if (*s>=0x5f && *s<=0x7e)
*s = *s == 0x5f ? 0x7f : *s - 0x5f;
break;
default: /* any character sets we don't recognize*/
return;
}
len = ptr - buf;
ptr = buf;
while (len > 0) {
n = screen->max_col-screen->cur_col+1;
if (n <= 1) {
if (screen->do_wrap && (flags&WRAPAROUND)) {
Index(screen, 1);
screen->cur_col = 0;
screen->do_wrap = 0;
n = screen->max_col+1;
} else
n = 1;
}
if (len < n)
n = len;
next_col = screen->cur_col + n;
WriteText(screen, ptr, n, flags);
/*
* the call to WriteText updates screen->cur_col.
* If screen->cur_col != next_col, we must have
* hit the right margin, so set the do_wrap flag.
*/
screen->do_wrap = (screen->cur_col < next_col);
len -= n;
ptr += n;
}
}
/*
* write a string str of length len onto the screen at
* the current cursor position. update cursor position.
*/
WriteText(screen, str, len, flags)
register TScreen *screen;
register char *str;
register int len;
unsigned flags;
{
register int cx, cy;
register unsigned fgs = flags;
GC currentGC;
if(screen->cur_row - screen->topline <= screen->max_row) {
/*
if(screen->cur_row == screen->cursor_row && screen->cur_col <=
screen->cursor_col && screen->cursor_col <= screen->cur_col + len - 1)
screen->cursor_state = OFF;
*/
if(screen->cursor_state)
HideCursor();
/*
* make sure that the correct GC is current
*/
if (fgs & BOLD)
if (fgs & INVERSE)
currentGC = screen->reverseboldGC;
else currentGC = screen->normalboldGC;
else /* not bold */
if (fgs & INVERSE)
currentGC = screen->reverseGC;
else currentGC = screen->normalGC;
if (fgs & INSERT)
InsertChar(screen, len);
if (!(AddToRefresh(screen))) {
if(screen->scroll_amt)
FlushScroll(screen);
cx = CursorX(screen, screen->cur_col);
cy = CursorY(screen, screen->cur_row)+screen->fnt_norm->max_bounds.ascent;
XDrawImageString(screen->display, TextWindow(screen), currentGC,
cx, cy, str, len);
if((fgs & BOLD) && screen->enbolden)
if (currentGC == screen->normalGC || screen->reverseGC)
XDrawString(screen->display, TextWindow(screen),
currentGC,cx + 1, cy, str, len);
if(fgs & UNDERLINE)
XDrawLine(screen->display, TextWindow(screen), currentGC,
cx, cy+1,
cx + len * FontWidth(screen), cy+1);
/*
* the following statements compile data to compute the average
* number of characters written on each call to XText. The data
* may be examined via the use of a "hidden" escape sequence.
*/
ctotal += len;
++ntotal;
}
}
ScreenWrite(screen, str, flags, len);
CursorForward(screen, len);
}
/*
* process ANSI modes set, reset
*/
modes(term, func)
Terminal *term;
int (*func)();
{
register int i;
for (i=0; i<nparam; ++i) {
switch (param[i]) {
case 4: /* IRM */
(*func)(&term->flags, INSERT);
break;
case 20: /* LNM */
(*func)(&term->flags, LINEFEED);
break;
}
}
}
/*
* process DEC private modes set, reset
*/
dpmodes(term, func)
Terminal *term;
int (*func)();
{
register TScreen *screen = &term->screen;
register int i, j;
extern int bitset();
for (i=0; i<nparam; ++i) {
switch (param[i]) {