void
on_reschange(size_t cols, size_t rows)
{
/* Clear window */
XSetForeground(X.dpy,
X.gc,
config.background);
XFillRectangle(X.dpy,
X.pixmap,
X.gc,
0,
0,
X.win_width,
X.win_height);
/* Report new size */
struct winsize w;
w.ws_row = rows;
w.ws_col = cols;
w.ws_xpixel = w.ws_ypixel = 0;
if (ioctl(shell_fd, TIOCSWINSZ, &w) < 0) {
debug("ioctl failed: %d", errno);
}
/* Order a full repaint */
term_invalidate();
}
/*
* Remove everything currently in `inbuf' and stick it up on the
* in-memory display. There's a big state machine in here to
* process escape sequences...
*/
void term_out(void) {
int c;
int must_update = FALSE;
while ( (c = inbuf_getc()) != -1) {
#ifdef LOG
{
static FILE *fp = NULL;
if (!fp) fp = fopen("putty.log", "wb");
if (fp) fputc (c, fp);
}
#endif
switch (termstate) {
case TOPLEVEL:
do_toplevel:
switch (c) {
case '\005': /* terminal type query */
ldisc->send ("\033[?1;2c", 7);
break;
case '\007':
beep();
disptop = scrtop;
must_update = TRUE;
break;
case '\b':
if (curs_x == 0 && curs_y > 0)
curs_x = cols-1, curs_y--;
else if (wrapnext)
wrapnext = FALSE;
else
curs_x--;
fix_cpos;
disptop = scrtop;
must_update = TRUE;
break;
case '\016':
cset = 1;
break;
case '\017':
cset = 0;
break;
case '\033':
termstate = SEEN_ESC;
break;
case 0233:
termstate = SEEN_CSI;
esc_nargs = 1;
esc_args[0] = ARG_DEFAULT;
esc_query = FALSE;
break;
case 0235:
termstate = SEEN_OSC;
esc_args[0] = 0;
break;
case '\r':
curs_x = 0;
wrapnext = FALSE;
fix_cpos;
disptop = scrtop;
must_update = TRUE;
break;
case '\013':
case '\014':
case '\n':
if (curs_y == marg_b)
scroll (marg_t, marg_b, 1, TRUE);
else if (curs_y < rows-1)
curs_y++;
if (cfg.lfhascr)
curs_x = 0;
fix_cpos;
wrapnext = FALSE;
disptop = scrtop;
nl_count++;
break;
case '\t':
do {
curs_x++;
} while (curs_x < cols-1 && !tabs[curs_x]);
if (curs_x >= cols)
curs_x = cols-1;
{
unsigned long *old_cpos = cpos;
fix_cpos;
check_selection (old_cpos, cpos);
}
disptop = scrtop;
must_update = TRUE;
break;
default:
if (c >= ' ' && c != 0234) {
if (wrapnext) {
cpos[1] = ATTR_WRAPPED;
if (curs_y == marg_b)
scroll (marg_t, marg_b, 1, TRUE);
else if (curs_y < rows-1)
curs_y++;
curs_x = 0;
fix_cpos;
wrapnext = FALSE;
nl_count++;
}
if (insert)
insch (1);
check_selection (cpos, cpos+1);
*cpos++ = xlat_tty2scr((unsigned char)c) | curr_attr |
(c <= 0x7F ? cset_attr[cset] : ATTR_ASCII);
curs_x++;
if (curs_x == cols) {
cpos--;
curs_x--;
wrapnext = wrap;
}
disptop = scrtop;
}
}
break;
case IGNORE_NEXT:
termstate = TOPLEVEL;
break;
case OSC_MAYBE_ST:
/*
* This state is virtually identical to SEEN_ESC, with the
* exception that we have an OSC sequence in the pipeline,
* and _if_ we see a backslash, we process it.
*/
if (c == '\\') {
do_osc();
termstate = TOPLEVEL;
break;
}
/* else fall through */
case SEEN_ESC:
termstate = TOPLEVEL;
switch (c) {
case '\005': case '\007': case '\b': case '\016': case '\017':
case '\033': case 0233: case 0234: case 0235: case '\r':
case '\013': case '\014': case '\n': case '\t':
termstate = TOPLEVEL;
goto do_toplevel; /* hack... */
case ' ': /* some weird sequence? */
termstate = IGNORE_NEXT;
break;
case '[': /* enter CSI mode */
termstate = SEEN_CSI;
esc_nargs = 1;
esc_args[0] = ARG_DEFAULT;
esc_query = FALSE;
break;
case ']': /* xterm escape sequences */
termstate = SEEN_OSC;
esc_args[0] = 0;
break;
case '(': /* should set GL */
termstate = SET_GL;
break;
case ')': /* should set GR */
termstate = SET_GR;
break;
case '7': /* save cursor */
save_cursor (TRUE);
break;
case '8': /* restore cursor */
save_cursor (FALSE);
disptop = scrtop;
must_update = TRUE;
break;
case '=':
app_keypad_keys = TRUE;
break;
case '>':
app_keypad_keys = FALSE;
break;
case 'D': /* exactly equivalent to LF */
if (curs_y == marg_b)
scroll (marg_t, marg_b, 1, TRUE);
else if (curs_y < rows-1)
curs_y++;
fix_cpos;
wrapnext = FALSE;
disptop = scrtop;
nl_count++;
break;
case 'E': /* exactly equivalent to CR-LF */
curs_x = 0;
wrapnext = FALSE;
if (curs_y == marg_b)
scroll (marg_t, marg_b, 1, TRUE);
else if (curs_y < rows-1)
curs_y++;
fix_cpos;
wrapnext = FALSE;
nl_count++;
disptop = scrtop;
break;
case 'M': /* reverse index - backwards LF */
if (curs_y == marg_t)
scroll (marg_t, marg_b, -1, TRUE);
else if (curs_y > 0)
curs_y--;
fix_cpos;
wrapnext = FALSE;
disptop = scrtop;
must_update = TRUE;
break;
case 'Z': /* terminal type query */
ldisc->send ("\033[?6c", 5);
break;
case 'c': /* restore power-on settings */
power_on();
fix_cpos;
disptop = scrtop;
must_update = TRUE;
break;
case '#': /* ESC # 8 fills screen with Es :-) */
termstate = SEEN_ESCHASH;
break;
case 'H': /* set a tab */
tabs[curs_x] = TRUE;
break;
}
break;
case SEEN_CSI:
termstate = TOPLEVEL; /* default */
switch (c) {
case '\005': case '\007': case '\b': case '\016': case '\017':
case '\033': case 0233: case 0234: case 0235: case '\r':
case '\013': case '\014': case '\n': case '\t':
termstate = TOPLEVEL;
goto do_toplevel; /* hack... */
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
if (esc_nargs <= ARGS_MAX) {
if (esc_args[esc_nargs-1] == ARG_DEFAULT)
esc_args[esc_nargs-1] = 0;
esc_args[esc_nargs-1] =
10 * esc_args[esc_nargs-1] + c - '0';
}
termstate = SEEN_CSI;
break;
case ';':
if (++esc_nargs <= ARGS_MAX)
esc_args[esc_nargs-1] = ARG_DEFAULT;
termstate = SEEN_CSI;
break;
case '?':
esc_query = TRUE;
termstate = SEEN_CSI;
break;
case 'A': /* move up N lines */
move (curs_x, curs_y - def(esc_args[0], 1), 1);
disptop = scrtop;
must_update = TRUE;
break;
case 'B': case 'e': /* move down N lines */
move (curs_x, curs_y + def(esc_args[0], 1), 1);
disptop = scrtop;
must_update = TRUE;
break;
case 'C': case 'a': /* move right N cols */
move (curs_x + def(esc_args[0], 1), curs_y, 1);
disptop = scrtop;
must_update = TRUE;
break;
case 'D': /* move left N cols */
move (curs_x - def(esc_args[0], 1), curs_y, 1);
disptop = scrtop;
must_update = TRUE;
break;
case 'E': /* move down N lines and CR */
move (0, curs_y + def(esc_args[0], 1), 1);
disptop = scrtop;
must_update = TRUE;
break;
case 'F': /* move up N lines and CR */
move (0, curs_y - def(esc_args[0], 1), 1);
disptop = scrtop;
must_update = TRUE;
break;
case 'G': case '`': /* set horizontal posn */
move (def(esc_args[0], 1) - 1, curs_y, 0);
disptop = scrtop;
must_update = TRUE;
break;
case 'd': /* set vertical posn */
move (curs_x, (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1,
(dec_om ? 2 : 0));
disptop = scrtop;
must_update = TRUE;
break;
case 'H': case 'f': /* set horz and vert posns at once */
if (esc_nargs < 2)
esc_args[1] = ARG_DEFAULT;
move (def(esc_args[1], 1) - 1,
(dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1,
(dec_om ? 2 : 0));
disptop = scrtop;
must_update = TRUE;
break;
case 'J': /* erase screen or parts of it */
{
unsigned int i = def(esc_args[0], 0) + 1;
if (i > 3)
i = 0;
erase_lots(FALSE, !!(i & 2), !!(i & 1));
}
disptop = scrtop;
must_update = TRUE;
break;
case 'K': /* erase line or parts of it */
{
unsigned int i = def(esc_args[0], 0) + 1;
if (i > 3)
i = 0;
erase_lots(TRUE, !!(i & 2), !!(i & 1));
}
disptop = scrtop;
must_update = TRUE;
break;
case 'L': /* insert lines */
if (curs_y <= marg_b)
scroll (curs_y, marg_b, -def(esc_args[0], 1), FALSE);
disptop = scrtop;
must_update = TRUE;
break;
case 'M': /* delete lines */
if (curs_y <= marg_b)
scroll (curs_y, marg_b, def(esc_args[0], 1), FALSE);
disptop = scrtop;
must_update = TRUE;
break;
case '@': /* insert chars */
insch (def(esc_args[0], 1));
disptop = scrtop;
must_update = TRUE;
break;
case 'P': /* delete chars */
insch (-def(esc_args[0], 1));
disptop = scrtop;
must_update = TRUE;
break;
case 'c': /* terminal type query */
ldisc->send ("\033[?6c", 5);
break;
case 'n': /* cursor position query */
if (esc_args[0] == 6) {
char buf[32];
sprintf (buf, "\033[%d;%dR", curs_y + 1, curs_x + 1);
ldisc->send (buf, strlen(buf));
}
break;
case 'h': /* toggle a mode to high */
toggle_mode (esc_args[0], esc_query, TRUE);
break;
case 'l': /* toggle a mode to low */
toggle_mode (esc_args[0], esc_query, FALSE);
break;
case 'g': /* clear tabs */
if (esc_nargs == 1) {
if (esc_args[0] == 0) {
tabs[curs_x] = FALSE;
} else if (esc_args[0] == 3) {
int i;
for (i = 0; i < cols; i++)
tabs[i] = FALSE;
}
}
break;
case 'r': /* set scroll margins */
if (!esc_query && esc_nargs <= 2) {
int top, bot;
top = def(esc_args[0], 1) - 1;
if (top < 0)
top = 0;
bot = (esc_nargs <= 1 || esc_args[1] == 0 ? rows :
def(esc_args[1], rows)) - 1;
if (bot >= rows)
bot = rows-1;
if (top <= bot) {
marg_t = top;
marg_b = bot;
curs_x = 0;
/*
* I used to think the cursor should be
* placed at the top of the newly marginned
* area. Apparently not: VMS TPU falls over
* if so.
*/
curs_y = 0;
fix_cpos;
disptop = scrtop;
must_update = TRUE;
}
}
break;
case 'm': /* set graphics rendition */
{
int i;
for (i=0; i<esc_nargs; i++) {
switch (def(esc_args[i], 0)) {
case 0: /* restore defaults */
curr_attr = ATTR_DEFAULT; break;
case 1: /* enable bold */
curr_attr |= ATTR_BOLD; break;
case 4: /* enable underline */
case 21: /* (enable double underline) */
curr_attr |= ATTR_UNDER; break;
case 7: /* enable reverse video */
curr_attr |= ATTR_REVERSE; break;
case 22: /* disable bold */
curr_attr &= ~ATTR_BOLD; break;
case 24: /* disable underline */
curr_attr &= ~ATTR_UNDER; break;
case 27: /* disable reverse video */
curr_attr &= ~ATTR_REVERSE; break;
case 30: case 31: case 32: case 33:
case 34: case 35: case 36: case 37:
/* foreground */
curr_attr &= ~ATTR_FGMASK;
curr_attr |= (esc_args[i] - 30) << ATTR_FGSHIFT;
break;
case 39: /* default-foreground */
curr_attr &= ~ATTR_FGMASK;
curr_attr |= ATTR_DEFFG;
break;
case 40: case 41: case 42: case 43:
case 44: case 45: case 46: case 47:
/* background */
curr_attr &= ~ATTR_BGMASK;
curr_attr |= (esc_args[i] - 40) << ATTR_BGSHIFT;
break;
case 49: /* default-background */
curr_attr &= ~ATTR_BGMASK;
curr_attr |= ATTR_DEFBG;
break;
}
}
}
break;
case 's': /* save cursor */
save_cursor (TRUE);
break;
case 'u': /* restore cursor */
save_cursor (FALSE);
disptop = scrtop;
must_update = TRUE;
break;
case 't': /* set page size - ie window height */
request_resize (cols, def(esc_args[0], 24));
deselect();
break;
case 'X': /* write N spaces w/o moving cursor */
{
int n = def(esc_args[0], 1);
unsigned long *p = cpos;
if (n > cols - curs_x)
n = cols - curs_x;
check_selection (cpos, cpos+n);
while (n--)
*p++ = ERASE_CHAR;
disptop = scrtop;
must_update = TRUE;
}
break;
case 'x': /* report terminal characteristics */
{
char buf[32];
int i = def(esc_args[0], 0);
if (i == 0 || i == 1) {
strcpy (buf, "\033[2;1;1;112;112;1;0x");
buf[2] += i;
ldisc->send (buf, 20);
}
}
break;
}
break;
case SET_GL:
case SET_GR:
switch (c) {
case 'A':
cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_GBCHR;
break;
case '0':
cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_LINEDRW;
break;
default: /* specifically, 'B' */
cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_ASCII;
break;
}
termstate = TOPLEVEL;
break;
case SEEN_OSC:
osc_w = FALSE;
switch (c) {
case '\005': case '\007': case '\b': case '\016': case '\017':
case '\033': case 0233: case 0234: case 0235: case '\r':
case '\013': case '\014': case '\n': case '\t':
termstate = TOPLEVEL;
goto do_toplevel; /* hack... */
case 'P': /* Linux palette sequence */
termstate = SEEN_OSC_P;
osc_strlen = 0;
break;
case 'R': /* Linux palette reset */
palette_reset();
term_invalidate();
termstate = TOPLEVEL;
break;
case 'W': /* word-set */
termstate = SEEN_OSC_W;
osc_w = TRUE;
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
esc_args[0] = 10 * esc_args[0] + c - '0';
break;
case 'L':
/*
* Grotty hack to support xterm and DECterm title
* sequences concurrently.
*/
if (esc_args[0] == 2) {
esc_args[0] = 1;
break;
}
/* else fall through */
default:
termstate = OSC_STRING;
osc_strlen = 0;
}
break;
case OSC_STRING:
if (c == 0234 || c == '\007') {
/*
* These characters terminate the string; ST and BEL
* terminate the sequence and trigger instant
* processing of it, whereas ESC goes back to SEEN_ESC
* mode unless it is followed by \, in which case it is
* synonymous with ST in the first place.
*/
do_osc();
termstate = TOPLEVEL;
} else if (c == '\033')
termstate = OSC_MAYBE_ST;
else if (osc_strlen < OSC_STR_MAX)
osc_string[osc_strlen++] = c;
break;
case SEEN_OSC_P:
{
int max = (osc_strlen == 0 ? 21 : 16);
int val;
if (c >= '0' && c <= '9')
val = c - '0';
else if (c >= 'A' && c <= 'A'+max-10)
val = c - 'A' + 10;
else if (c >= 'a' && c <= 'a'+max-10)
val = c - 'a' + 10;
else
termstate = TOPLEVEL;
osc_string[osc_strlen++] = val;
if (osc_strlen >= 7) {
palette_set (osc_string[0],
osc_string[1] * 16 + osc_string[2],
osc_string[3] * 16 + osc_string[4],
osc_string[5] * 16 + osc_string[6]);
term_invalidate();
termstate = TOPLEVEL;
}
}
break;
case SEEN_OSC_W:
switch (c) {
case '\005': case '\007': case '\b': case '\016': case '\017':
case '\033': case 0233: case 0234: case 0235: case '\r':
case '\013': case '\014': case '\n': case '\t':
termstate = TOPLEVEL;
goto do_toplevel; /* hack... */
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
esc_args[0] = 10 * esc_args[0] + c - '0';
break;
default:
termstate = OSC_STRING;
osc_strlen = 0;
}
break;
case SEEN_ESCHASH:
if (c == '8') {
unsigned long *p = scrtop;
int n = rows * (cols+1);
while (n--)
*p++ = ATTR_DEFAULT | 'E';
disptop = scrtop;
must_update = TRUE;
check_selection (scrtop, scrtop + rows * (cols+1));
}
termstate = TOPLEVEL;
break;
}
check_selection (cpos, cpos+1);
}
if (must_update || nl_count > MAXNL)
term_update();
}
/*
* Refresh the window in response to a server-side request.
*/
void refresh_window(void *frontend)
{
struct gui_data *inst = (struct gui_data *)frontend;
term_invalidate(inst->term);
}
void
x_on_expose(unused XEvent *event)
{
term_invalidate();
x_draw();
}
