static void tty_emulate(ShellState *s, int c)
{
int i, offset, offset1, offset2, n;
char buf1[10];
#define ESC2(c1,c2) (((c1)<<8)|((unsigned char)c2))
/* some bytes are state independent */
switch (c) {
case 0x18:
case 0x1A:
s->state = TTY_STATE_NORM;
return;
case 0x1B:
s->state = TTY_STATE_ESC;
return;
#if 0
case 0x9B:
goto csi_entry;
#endif
}
switch (s->state) {
case TTY_STATE_NORM:
switch (c) {
/* BEL Bell (Ctrl-G) */
/* FF Form Feed or New Page (NP) (Ctrl-L) same as LF */
/* TAB Horizontal Tab (HT) (Ctrl-I) */
/* VT Vertical Tab (Ctrl-K) same as LF */
case 8: /* ^H BS = backspace */
{
int c1;
c1 = eb_prevc(s->b, s->cur_offset, &offset);
if (c1 != '\n')
s->cur_offset = offset;
}
break;
case 10: /* ^J NL = line feed */
/* go to next line */
/* CG: should check if column should be kept */
offset = s->cur_offset;
for (;;) {
if (offset == s->b->total_size) {
/* add a new line */
buf1[0] = '\n';
eb_insert(s->b, offset, buf1, 1);
offset = s->b->total_size;
break;
}
c = eb_nextc(s->b, offset, &offset);
if (c == '\n')
break;
}
s->cur_offset = offset;
break;
case 13: /* ^M CR = carriage return */
/* move to bol */
for (;;) {
c = eb_prevc(s->b, s->cur_offset, &offset1);
if (c == '\n')
break;
s->cur_offset = offset1;
}
break;
case 14: /* ^N SO = shift out */
s->shifted = 1;
break;
case 15: /* ^O SI = shift in */
s->shifted = 0;
break;
default:
if (c >= 32 || c == 9) {
int c1, cur_len, len;
/* CG: assuming ISO-8859-1 characters */
/* CG: horrible kludge for alternate charset support */
if (s->shifted && c >= 96 && c < 128)
c += 32;
/* write char (should factorize with do_char() code */
len = unicode_to_charset(buf1, c, s->b->charset);
c1 = eb_nextc(s->b, s->cur_offset, &offset);
/* XXX: handle tab case */
if (c1 == '\n') {
/* insert */
eb_insert(s->b, s->cur_offset, buf1, len);
} else {
cur_len = offset - s->cur_offset;
if (cur_len == len) {
eb_write(s->b, s->cur_offset, buf1, len);
} else {
eb_delete(s->b, s->cur_offset, cur_len);
eb_insert(s->b, s->cur_offset, buf1, len);
}
}
s->cur_offset += len;
}
break;
}
break;
case TTY_STATE_ESC:
if (c == '[') {
for (i = 0; i < MAX_ESC_PARAMS; i++) {
s->esc_params[i] = 0;
s->has_params[i] = 0;
}
s->nb_esc_params = 0;
s->esc1 = 0;
s->state = TTY_STATE_CSI;
} else {
/* CG: should deal with other sequences:
* ansi: hts=\EH, s0ds=\E(B, s1ds=\E)B, s2ds=\E*B, s3ds=\E+B,
* linux: hts=\EH, rc=\E8, ri=\EM, rs1=\Ec\E]R, sc=\E7,
* vt100: enacs=\E(B\E)0, hts=\EH, rc=\E8, ri=\EM$<5>,
* rmkx=\E[?1l\E>,
* rs2=\E>\E[?3l\E[?4l\E[?5l\E[?7h\E[?8h, sc=\E7,
* smkx=\E[?1h\E=,
* xterm: enacs=\E(B\E)0, hts=\EH, is2=\E[!p\E[?3;4l\E[4l\E>,
* rc=\E8, ri=\EM, rmkx=\E[?1l\E>, rs1=\Ec,
* rs2=\E[!p\E[?3;4l\E[4l\E>, sc=\E7, smkx=\E[?1h\E=,
*/
switch (c) {
case '(':
case ')':
case '*':
case '+':
case ']':
s->esc1 = c;
s->state = TTY_STATE_ESC2;
break;
case 'H': // hts
case '7': // sc
case '8': // rc
case 'M': // ri
case 'c': // rs1
case '>': // rmkx, is2, rs2
case '=': // smkx
// XXX: do these
default:
s->state = TTY_STATE_NORM;
break;
}
}
break;
case TTY_STATE_ESC2:
s->state = TTY_STATE_NORM;
switch (ESC2(s->esc1, c)) {
case ESC2('(','B'):
case ESC2(')','B'):
case ESC2('(','0'):
case ESC2(')','0'):
case ESC2('*','B'):
case ESC2('+','B'):
case ESC2(']','R'):
/* XXX: ??? */
break;
}
break;
case TTY_STATE_CSI:
if (c == '?') {
s->esc1 = c;
break;
}
if (c >= '0' && c <= '9') {
if (s->nb_esc_params < MAX_ESC_PARAMS) {
s->esc_params[s->nb_esc_params] =
s->esc_params[s->nb_esc_params] * 10 + c - '0';
s->has_params[s->nb_esc_params] = 1;
}
} else {
s->nb_esc_params++;
if (c == ';')
break;
s->state = TTY_STATE_NORM;
switch (ESC2(s->esc1,c)) {
case ESC2('?','h'): /* set terminal mode */
/* 1047, 1048 -> cup mode:
* xterm 1049 private mode,
* should grab all keys while active!
*/
if (s->esc_params[0] == 1047 ||
s->esc_params[0] == 1048 ||
s->esc_params[0] == 1049) {
s->grab_keys = 1;
qe_grab_keys(shell_key, s);
/* Should also clear screen */
}
break;
case ESC2('?','l'): /* reset terminal mode */
if (s->esc_params[0] == 1047 ||
s->esc_params[0] == 1048 ||
s->esc_params[0] == 1049) {
qe_ungrab_keys();
s->grab_keys = 0;
}
break;
case 'A':
/* move relative up */
tty_gotoxy(s, 0, -(s->esc_params[0] + 1 - s->has_params[0]), 1);
break;
case 'B':
/* move relative down */
tty_gotoxy(s, 0, (s->esc_params[0] + 1 - s->has_params[0]), 1);
break;
case 'C':
/* move relative forward */
tty_gotoxy(s, (s->esc_params[0] + 1 - s->has_params[0]), 0, 1);
break;
case 'D':
/* move relative backward */
tty_gotoxy(s, -(s->esc_params[0] + 1 - s->has_params[0]), 0, 1);
break;
case 'H':
/* goto xy */
tty_gotoxy(s, s->esc_params[1] - s->has_params[1],
s->esc_params[0] - s->has_params[0], 0);
break;
case 'J': /* clear to end of screen */
case 'L': /* insert lines */
case 'M': /* delete lines */
case 'S': /* scroll forward P lines */
case 'T': /* scroll back P lines */
case 'X': /* erase P characters */
break;
case 'K': /* clear eol (parm=1 -> bol) */
offset1 = s->cur_offset;
for (;;) {
c = eb_nextc(s->b, offset1, &offset2);
if (c == '\n')
break;
offset1 = offset2;
}
eb_delete(s->b, s->cur_offset, offset1 - s->cur_offset);
break;
case 'P':
/* delete chars */
n = s->esc_params[0];
if (n <= 0)
n = 1;
offset1 = s->cur_offset;
for (; n > 0; n--) {
c = eb_nextc(s->b, offset1, &offset2);
if (c == '\n')
break;
offset1 = offset2;
}
eb_delete(s->b, s->cur_offset, offset1 - s->cur_offset);
break;
case '@':
/* insert chars */
n = s->esc_params[0];
if (n <= 0)
n = 1;
buf1[0] = ' ';
for (; n > 0; n--) {
eb_insert(s->b, s->cur_offset, buf1, 1);
}
break;
case 'm':
/* colors */
n = s->nb_esc_params;
if (n == 0)
n = 1;
for (i = 0; i < n; i++)
tty_csi_m(s, s->esc_params[i]);
break;
case 'n':
if (s->esc_params[0] == 6) {
/* XXX: send cursor position, just to be able to
launch qemacs in qemacs (in 8859-1) ! */
char buf2[20];
snprintf(buf2, sizeof(buf2), "\033[%d;%dR", 1, 1);
tty_write(s, buf2, -1);
}
break;
default:
break;
}
}
break;
}
#undef ESC2
tty_update_cursor(s);
}
static void tty_emulate(ShellState *s, int c)
{
int i, offset, offset1, offset2, n;
unsigned char buf1[10];
switch(s->state) {
case TTY_STATE_NORM:
switch(c) {
case 8:
{
int c1;
c1 = eb_prevc(s->b, s->cur_offset, &offset);
if (c1 != '\n')
s->cur_offset = offset;
}
break;
case 10:
/* go to next line */
offset = s->cur_offset;
for(;;) {
if (offset == s->b->total_size) {
/* add a new line */
buf1[0] = '\n';
eb_insert(s->b, offset, buf1, 1);
offset = s->b->total_size;
break;
}
c = eb_nextc(s->b, offset, &offset);
if (c == '\n')
break;
}
s->cur_offset = offset;
break;
case 13:
/* move to bol */
for(;;) {
c = eb_prevc(s->b, s->cur_offset, &offset1);
if (c == '\n')
break;
s->cur_offset = offset1;
}
break;
case 27:
s->state = TTY_STATE_ESC;
break;
default:
if (c >= 32 || c == 9) {
int c1, cur_len, len;
/* write char (should factorize with do_char() code */
len = unicode_to_charset(buf1, c, s->b->charset);
c1 = eb_nextc(s->b, s->cur_offset, &offset);
/* XXX: handle tab case */
if (c1 == '\n') {
/* insert */
eb_insert(s->b, s->cur_offset, buf1, len);
} else {
cur_len = offset - s->cur_offset;
if (cur_len == len) {
eb_write(s->b, s->cur_offset, buf1, len);
} else {
eb_delete(s->b, s->cur_offset, cur_len);
eb_insert(s->b, s->cur_offset, buf1, len);
}
}
s->cur_offset += len;
}
break;
}
break;
case TTY_STATE_ESC:
if (c == '[') {
for(i=0;i<MAX_ESC_PARAMS;i++)
s->esc_params[i] = 0;
s->nb_esc_params = 0;
s->state = TTY_STATE_CSI;
} else {
s->state = TTY_STATE_NORM;
}
break;
case TTY_STATE_CSI:
if (c >= '0' && c <= '9') {
if (s->nb_esc_params < MAX_ESC_PARAMS) {
s->esc_params[s->nb_esc_params] =
s->esc_params[s->nb_esc_params] * 10 + c - '0';
}
} else {
s->nb_esc_params++;
if (c == ';')
break;
s->state = TTY_STATE_NORM;
switch(c) {
case 'H':
/* goto xy */
{
int x, y;
y = s->esc_params[0] - 1;
x = s->esc_params[1] - 1;
if (y < 0)
y = 0;
else if (y >= TTY_YSIZE)
y = TTY_YSIZE - 1;
if (x < 0)
x = 0;
tty_gotoxy(s, x, y);
}
break;
case 'K':
/* clear to eol */
offset1 = s->cur_offset;
for(;;) {
c = eb_nextc(s->b, offset1, &offset2);
if (c == '\n')
break;
offset1 = offset2;
}
eb_delete(s->b, s->cur_offset, offset1 - s->cur_offset);
break;
case 'P':
/* delete chars */
n = s->esc_params[0];
if (n <= 0)
n = 1;
offset1 = s->cur_offset;
for(;n > 0;n--) {
c = eb_nextc(s->b, offset1, &offset2);
if (c == '\n')
break;
offset1 = offset2;
}
eb_delete(s->b, s->cur_offset, offset1 - s->cur_offset);
break;
case '@':
/* insert chars */
n = s->esc_params[0];
if (n <= 0)
n = 1;
buf1[0] = ' ';
for(;n > 0;n--) {
eb_insert(s->b, s->cur_offset, buf1, 1);
}
break;
case 'm':
/* colors */
n = s->nb_esc_params;
if (n == 0)
n = 1;
for(i=0;i<n;i++)
tty_csi_m(s, s->esc_params[i]);
break;
case 'n':
if (s->esc_params[0] == 6) {
/* XXX: send cursor position, just to be able to
launch qemacs in qemacs ! */
char buf2[20];
snprintf(buf2, sizeof(buf2), "\033[%d;%dR", 1, 1);
tty_write(s, buf2, -1);
}
break;
default:
break;
}
}
break;
}
tty_update_cursor(s);
}
