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shell.c
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shell.c
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/*
* Shell mode for QEmacs.
*
* Copyright (c) 2001, 2002 Fabrice Bellard.
* Copyright (c) 2002-2008 Charlie Gordon.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <signal.h>
#include <time.h>
#include <sys/wait.h>
#include <sys/ioctl.h>
#include <termios.h>
#include "qe.h"
/* XXX: status line */
/* XXX: better tab handling */
/* XXX: bold & italic ? */
/* XXX: send real cursor position (CSI n) */
static ModeDef shell_mode;
#define MAX_ESC_PARAMS 3
enum TTYState {
TTY_STATE_NORM,
TTY_STATE_ESC,
TTY_STATE_ESC2,
TTY_STATE_CSI,
TTY_STATE_STRING,
};
typedef struct ShellState {
/* buffer state */
int pty_fd;
int pid; /* -1 if not launched */
int color, attr, def_color;
int cur_offset; /* current offset at position x, y */
int esc_params[MAX_ESC_PARAMS];
int has_params[MAX_ESC_PARAMS];
int nb_esc_params;
int state;
int esc1, esc2;
int shifted;
int cset, charset[2];
int grab_keys;
EditBuffer *b;
EditBuffer *b_color; /* color buffer, one byte per char */
int is_shell; /* only used to display final message */
struct QEmacsState *qe_state;
const char *ka1, *ka3, *kb2, *kc1, *kc3, *kcbt, *kspd;
const char *kbeg, *kbs, *kent, *kdch1, *kich1;
const char *kcub1, *kcud1, *kcuf1, *kcuu1;
const char *kf1, *kf2, *kf3, *kf4, *kf5;
const char *kf6, *kf7, *kf8, *kf9, *kf10;
const char *kf11, *kf12, *kf13, *kf14, *kf15;
const char *kf16, *kf17, *kf18, *kf19, *kf20;
const char *khome, *kend, *kmous, *knp, *kpp;
} ShellState;
/* move to mode */
static int shell_launched = 0;
#define PTYCHAR1 "pqrstuvwxyzabcde"
#define PTYCHAR2 "0123456789abcdef"
/* allocate one pty/tty pair */
static int get_pty(char *tty_str, int size)
{
int fd;
char ptydev[] = "/dev/pty??";
char ttydev[] = "/dev/tty??";
int len = strlen(ttydev);
const char *c1, *c2;
#ifdef CONFIG_PTSNAME
/* First try Unix98 pseudo tty master */
if ((fd = open("/dev/ptmx", O_RDWR)) >= 0) {
#if 0
/* ptsname_r is a sensible renentrant version of ptsname, but
* it lacks portability, notably on OpenBSD and cygwin. So we
* have to use ill conceived ptsname.
*/
if (!ptsname_r(fd, tty_str, size) && !grantpt(fd) && !unlockpt(fd))
return fd;
#else
const char *name = ptsname(fd);
if (name) {
pstrcpy(tty_str, size, name);
if (!grantpt(fd) && !unlockpt(fd))
return fd;
}
#endif
close(fd);
}
#endif
/* then try BSD pseudo tty pre-created pairs */
for (c1 = PTYCHAR1; *c1; c1++) {
ptydev[len-2] = ttydev[len-2] = *c1;
for (c2 = PTYCHAR2; *c2; c2++) {
ptydev[len-1] = ttydev[len-1] = *c2;
if ((fd = open(ptydev, O_RDWR)) >= 0) {
if (access(ttydev, R_OK|W_OK) == 0) {
pstrcpy(tty_str, size, ttydev);
return fd;
}
close(fd);
}
}
}
return -1;
}
#define TTY_XSIZE 80
#define TTY_YSIZE 25
#define TTY_YSIZE_INFINITE 10000
static int run_process(const char *path, const char **argv,
int *fd_ptr, int *pid_ptr,
int cols, int rows, int is_shell)
{
int pty_fd, pid, i, nb_fds;
char tty_name[32];
struct winsize ws;
pty_fd = get_pty(tty_name, sizeof(tty_name));
if (pty_fd < 0) {
put_status(NULL, "run_process: cannot get tty: %s",
strerror(errno));
return -1;
}
fcntl(pty_fd, F_SETFL, O_NONBLOCK);
/* set dummy screen size */
ws.ws_col = cols;
ws.ws_row = rows;
ws.ws_xpixel = ws.ws_col;
ws.ws_ypixel = ws.ws_row;
ioctl(pty_fd, TIOCSWINSZ, &ws);
pid = fork();
if (pid < 0) {
put_status(NULL, "run_process: cannot fork");
return -1;
}
if (pid == 0) {
/* child process */
nb_fds = getdtablesize();
for (i = 0; i < nb_fds; i++)
close(i);
/* open pseudo tty for standard i/o */
if (is_shell == 2) {
/* non interactive colored output: input from /dev/null */
open("/dev/null", O_RDONLY);
open(tty_name, O_RDWR);
dup(0);
} else {
open(tty_name, O_RDWR);
dup(0);
dup(0);
}
setsid();
setenv("TERM", "xterm", 1);
unsetenv("PAGER");
//setenv("QELEVEL", "1", 1);
execv(path, (char *const*)argv);
exit(1);
}
/* return file info */
*fd_ptr = pty_fd;
*pid_ptr = pid;
return 0;
}
/* VT100 emulation */
static void tty_init(ShellState *s)
{
char *term;
s->state = TTY_STATE_NORM;
s->cur_offset = 0;
/* Should compute def_color from shell default style at display
* time and force full redisplay upon style change.
*/
s->color = s->def_color = TTY_MAKE_COLOR(TTY_DEFFG, TTY_DEFBG);
s->attr = 0;
term = getenv("TERM");
/* vt100 terminfo definitions */
s->kbs = "\010";
s->ka1 = "\033Oq";
s->ka3 = "\033Os";
s->kb2 = "\033Or";
s->kc1 = "\033Op";
s->kc3 = "\033On";
s->kcub1 = "\033OD";
s->kcud1 = "\033OB";
s->kcuf1 = "\033OC";
s->kcuu1 = "\033OA";
s->kent = "\033OM";
s->kf1 = "\033OP";
s->kf2 = "\033OQ";
s->kf3 = "\033OR";
s->kf4 = "\033OS";
s->kf5 = "\033Ot";
s->kf6 = "\033Ou";
s->kf7 = "\033Ov";
s->kf8 = "\033Ol";
s->kf9 = "\033Ow";
s->kf10 = "\033Ox";
/* ansi terminfo definitions */
if (strstart(term, "ansi", NULL)) {
s->kbs = "\010";
s->kcbt = "\033[Z";
s->kcub1 = "\033[D";
s->kcud1 = "\033[B";
s->kcuf1 = "\033[C";
s->kcuu1 = "\033[A";
s->khome = "\033[H";
s->kich1 = "\033[L";
}
if (strstart(term, "vt220", NULL)) {
s->kcub1 = "\033[D";
s->kcud1 = "\033[B";
s->kcuf1 = "\033[C";
s->kcuu1 = "\033[A";
s->kdch1 = "\033[3~";
s->kend = "\033[4~";
s->khome = "\033[1~";
s->kich1 = "\033[2~";
s->knp = "\033[6~";
s->kpp = "\033[5~";
s->kf1 = "\033OP";
s->kf2 = "\033OQ";
s->kf3 = "\033OR";
s->kf4 = "\033OS";
s->kf5 = "\033[17~";
s->kf6 = "\033[18~";
s->kf7 = "\033[19~";
s->kf8 = "\033[20~";
s->kf9 = "\033[21~";
s->kf10 = "\033[29~";
}
if (strstart(term, "cygwin", NULL)) {
s->kbs = "\10";
goto linux_cygwin;
}
if (strstart(term, "linux", NULL)) {
s->kbs = "\177";
s->kb2 = "\033[G";
s->kcbt = "\033[Z";
s->kspd = "\032"; // ^Z
linux_cygwin:
s->kcub1 = "\033[D";
s->kcud1 = "\033[B";
s->kcuf1 = "\033[C";
s->kcuu1 = "\033[A";
s->kdch1 = "\033[3~";
s->kend = "\033[4~";
s->khome = "\033[1~";
s->kich1 = "\033[2~";
s->knp = "\033[6~";
s->kpp = "\033[5~";
s->kf1 = "\033[[A";
s->kf2 = "\033[[B";
s->kf3 = "\033[[C";
s->kf4 = "\033[[D";
s->kf5 = "\033[[E";
s->kf6 = "\033[17~";
s->kf7 = "\033[18~";
s->kf8 = "\033[19~";
s->kf9 = "\033[20~";
s->kf10 = "\033[21~";
s->kf11 = "\033[23~";
s->kf12 = "\033[24~";
s->kf13 = "\033[25~";
s->kf14 = "\033[26~";
s->kf15 = "\033[28~";
s->kf16 = "\033[29~";
s->kf17 = "\033[31~";
s->kf18 = "\033[32~";
s->kf19 = "\033[33~";
s->kf20 = "\033[34~";
}
if (strstart(term, "xterm", NULL)) {
s->ka1 = "\033Ow";
s->ka3 = "\033Ou";
s->kb2 = "\033Oy";
s->kbeg = "\033OE";
s->kbs = "\03377";
s->kc1 = "\033Oq";
s->kc3 = "\033Os";
s->kcub1 = "\033OD";
s->kcud1 = "\033OB";
s->kcuf1 = "\033OC";
s->kcuu1 = "\033OA";
s->kdch1 = "\033[3~";
s->kend = "\033[4~";
s->kent = "\033OM";
s->khome = "\033[1~";
s->kich1 = "\033[2~";
s->kmous = "\033[M";
s->knp = "\033[6~";
s->kpp = "\033[5~";
s->kf1 = "\033OP";
s->kf2 = "\033OQ";
s->kf3 = "\033OR";
s->kf4 = "\033OS";
s->kf5 = "\033[15~";
s->kf6 = "\033[17~";
s->kf7 = "\033[18~";
s->kf8 = "\033[19~";
s->kf9 = "\033[20~";
s->kf10 = "\033[21~";
s->kf11 = "\033[23~";
s->kf12 = "\033[24~";
s->kf13 = "\033[25~";
s->kf14 = "\033[26~";
s->kf15 = "\033[28~";
s->kf16 = "\033[29~";
s->kf17 = "\033[31~";
s->kf18 = "\033[32~";
s->kf19 = "\033[33~";
s->kf20 = "\033[34~";
}
}
static void tty_write(ShellState *s, const char *buf, int len)
{
int ret;
if (len < 0)
len = strlen(buf);
if (s->qe_state->trace_buffer)
eb_trace_bytes(buf, len, EB_TRACE_PTY);
while (len > 0) {
ret = write(s->pty_fd, buf, len);
if (ret == -1 && (errno == EAGAIN || errno == EINTR))
continue;
if (ret <= 0)
break;
buf += ret;
len -= ret;
}
}
/* Compute offset the of the char at column x and row y (0 based).
* Can insert spaces or rows if needed.
* x and y may each be relative to the current position.
*/
/* XXX: optimize !!!!! */
static void tty_goto_xy(ShellState *s, int x, int y, int relative)
{
int total_lines, cur_line, line_num, col_num, offset, offset1, c;
unsigned char buf1[10];
/* compute offset */
eb_get_pos(s->b, &total_lines, &col_num, s->b->total_size);
if (s->cur_offset == s->b->total_size
|| eb_prevc(s->b, s->b->total_size, &offset1) != '\n')
total_lines++;
line_num = total_lines - TTY_YSIZE;
if (line_num < 0)
line_num = 0;
if (relative) {
eb_get_pos(s->b, &cur_line, &col_num, s->cur_offset);
cur_line -= line_num;
if (cur_line < 0)
cur_line = 0;
if (relative & 1)
x += col_num;
if (relative & 2)
y += cur_line;
}
if (y < 0 || y >= TTY_YSIZE_INFINITE - 1)
y = 0;
else
if (y >= TTY_YSIZE)
y = TTY_YSIZE - 1;
if (x < 0)
x = 0;
line_num += y;
/* add lines if necessary */
while (line_num >= total_lines) {
buf1[0] = '\n';
eb_insert(s->b, s->b->total_size, buf1, 1);
total_lines++;
}
offset = eb_goto_pos(s->b, line_num, 0);
for (; x > 0; x--) {
c = eb_nextc(s->b, offset, &offset1);
if (c == '\n') {
buf1[0] = ' ';
for (; x > 0; x--) {
eb_insert(s->b, offset, buf1, 1);
offset++;
}
break;
} else {
offset = offset1;
}
}
s->cur_offset = offset;
}
static int tty_put_char(ShellState *s, int c)
{
char buf[1];
int c1, cur_len, offset;
buf[0] = c;
c1 = eb_nextc(s->b, s->cur_offset, &offset);
if (c1 == '\n') {
/* insert */
eb_insert(s->b, s->cur_offset, buf, 1);
} else {
/* check for (c1 != c) is not advisable optimisation because
* re-writing the same character may cause color changes.
*/
cur_len = offset - s->cur_offset;
if (cur_len == 1) {
eb_write(s->b, s->cur_offset, buf, 1);
} else {
eb_delete(s->b, s->cur_offset, cur_len);
eb_insert(s->b, s->cur_offset, buf, 1);
}
}
return s->cur_offset + 1;
}
static void tty_csi_m(ShellState *s, int c, int has_param)
{
/* Comment from putty/terminal.c:
*
* A VT100 without the AVO only had one
* attribute, either underline or
* reverse video depending on the
* cursor type, this was selected by
* CSI 7m.
*
* case 2:
* This is sometimes DIM, eg on the
* GIGI and Linux
* case 8:
* This is sometimes INVIS various ANSI.
* case 21:
* This like 22 disables BOLD, DIM and INVIS
*
* The ANSI colours appear on any
* terminal that has colour (obviously)
* but the interaction between sgr0 and
* the colours varies but is usually
* related to the background colour
* erase item. The interaction between
* colour attributes and the mono ones
* is also very implementation
* dependent.
*
* The 39 and 49 attributes are likely
* to be unimplemented.
*/
switch (has_param ? c : 0) {
case 0: /* exit_attribute_mode */
s->color = s->def_color;
s->attr = 0;
break;
case 1: /* enter_bold_mode */
s->attr |= TTY_BOLD;
break;
case 22: /* exit_bold_mode */
s->attr &= ~TTY_BOLD;
break;
case 4: /* enter_underline_mode */
s->attr |= TTY_UNDERLINE;
break;
case 24: /* exit_underline_mode */
s->attr &= ~TTY_UNDERLINE;
break;
case 5: /* enter_blink_mode */
s->attr |= TTY_BLINK;
break;
case 25: /* exit_blink_mode */
s->attr &= ~TTY_BLINK;
break;
case 7: /* enter_reverse_mode, enter_standout_mode */
case 27: /* exit_reverse_mode, exit_standout_mode */
/* TODO */
break;
case 6: /* SCO light background */
case 8: /* enter_secure_mode */
case 9: /* cygwin dim mode */
case 10: /* SCO acs off */
case 11: /* SCO acs on (CP437) */
case 12: /* SCO acs on, |0x80 */
case 28: /* exit_secure_mode */
break;
case 39: /* orig_pair(1) default-foreground */
TTY_SET_FG_COLOR(s->color, TTY_DEFFG);
break;
case 49: /* orig_pair(2) default-background */
TTY_SET_BG_COLOR(s->color, TTY_DEFBG);
break;
case 38: /* set extended foreground color */
/* complete syntax is \033[38;5;Nm where N is in range 1..255 */
if (s->esc_params[1] == 5) {
/* set foreground color to third esc_param */
int color = s->esc_params[2];
/* simulate 256 colors */
color = get_tty_color(tty_fg_colors[color & 255],
tty_fg_colors, 16);
TTY_SET_FG_COLOR(s->color, color);
s->nb_esc_params = 1;
}
break;
case 48: /* set extended background color */
/* complete syntax is \033[48;5;Nm where N is in range 1..255 */
if (s->esc_params[1] == 5) {
/* set background color to third esc_param */
int color = s->esc_params[2];
/* simulate 256 colors */
color = get_tty_color(tty_fg_colors[color & 255],
tty_fg_colors, 16);
TTY_SET_BG_COLOR(s->color, color);
s->nb_esc_params = 1;
}
break;
default:
/* 0:black 1:red 2:green 3:yellow 4:blue 5:magenta 6:cyan 7:white */
if (c >= 30 && c <= 37) {
/* set foreground color */
TTY_SET_FG_COLOR(s->color, c - 30);
} else
if (c >= 40 && c <= 47) {
/* set background color */
TTY_SET_BG_COLOR(s->color, c - 40);
} else
if (c >= 90 && c <= 97) {
/* set bright foreground color */
TTY_SET_FG_COLOR(s->color, c - 90 + 8);
} else
if (c >= 100 && c <= 107) {
/* set bright background color */
TTY_SET_BG_COLOR(s->color, c - 100 + 8);
}
break;
}
}
/* Well, almost a hack to update cursor */
static void tty_update_cursor(__unused__ ShellState *s)
{
#if 0
QEmacsState *qs = s->qe_state;
EditState *e;
if (s->cur_offset == -1)
return;
for (e = qs->first_window; e != NULL; e = e->next_window) {
if (s->b == e->b && e->interactive) {
e->offset = s->cur_offset;
}
}
#endif
}
/* CG: much cleaner way! */
/* would need a kill hook as well ? */
static void shell_display_hook(EditState *e)
{
ShellState *s = e->b->priv_data;
if (e->interactive)
e->offset = s->cur_offset;
}
static void shell_key(void *opaque, int key)
{
ShellState *s = opaque;
char buf[10];
const char *p;
int len;
if (key == KEY_CTRL('o')) {
qe_ungrab_keys();
unget_key(key);
return;
}
p = buf;
len = -1;
switch (key) {
case KEY_UP: p = s->kcuu1; break;
case KEY_DOWN: p = s->kcud1; break;
case KEY_RIGHT: p = s->kcuf1; break;
case KEY_LEFT: p = s->kcub1; break;
//case KEY_CTRL_UP:
//case KEY_CTRL_DOWN:
//case KEY_CTRL_RIGHT:
//case KEY_CTRL_LEFT:
//case KEY_CTRL_END:
//case KEY_CTRL_HOME:
//case KEY_CTRL_PAGEUP:
//case KEY_CTRL_PAGEDOWN:
case KEY_SHIFT_TAB: p = s->kcbt; break;
case KEY_HOME: p = s->khome; break;
case KEY_INSERT: p = s->kich1; break;
case KEY_DELETE: p = s->kdch1; break;
case KEY_END: p = s->kend; break;
case KEY_PAGEUP: p = s->kpp; break;
case KEY_PAGEDOWN: p = s->knp; break;
case KEY_F1: p = s->kf1; break;
case KEY_F2: p = s->kf2; break;
case KEY_F3: p = s->kf3; break;
case KEY_F4: p = s->kf4; break;
case KEY_F5: p = s->kf5; break;
case KEY_F6: p = s->kf6; break;
case KEY_F7: p = s->kf7; break;
case KEY_F8: p = s->kf8; break;
case KEY_F9: p = s->kf9; break;
case KEY_F10: p = s->kf10; break;
case KEY_F11: p = s->kf11; break;
case KEY_F12: p = s->kf12; break;
case KEY_F13: p = s->kf13; break;
case KEY_F14: p = s->kf14; break;
case KEY_F15: p = s->kf15; break;
case KEY_F16: p = s->kf16; break;
case KEY_F17: p = s->kf17; break;
case KEY_F18: p = s->kf18; break;
case KEY_F19: p = s->kf19; break;
case KEY_F20: p = s->kf20; break;
default:
if (key < 256) {
buf[0] = key;
len = 1;
} else
if (key >= KEY_META(0) && key <= KEY_META(255)) {
buf[0] = '\033';
buf[1] = key;
len = 2;
} else {
p = NULL;
}
break;
}
if (p) {
tty_write(s, p, len);
}
}
static unsigned char const sco_color[16] = {
0, 4, 2, 6, 1, 5, 3, 7, 8, 12, 10, 14, 9, 13, 11, 15,
};
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 */
/* 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;
/* back_color_erase */
//tty_put_char(s, ' ');
}
}
break;
case 9: /* ^I HT = horizontal tab */
{
int col_num, cur_line;
eb_get_pos(s->b, &cur_line, &col_num, s->cur_offset);
tty_goto_xy(s, (col_num + 8) & ~7, 0, 2);
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 */
s->cur_offset = eb_goto_bol(s->b, s->cur_offset);
break;
case 14: /* ^N SO = shift out */
s->shifted = s->charset[s->cset = 1];
break;
case 15: /* ^O SI = shift in */
s->shifted = s->charset[s->cset = 0];
break;
default:
if (c >= 32) {
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) {
#if 0
/* Should actually use these tables: */
static const wchar_t unitab_xterm_std[32] = {
0x2666, 0x2592, 0x2409, 0x240c,
0x240d, 0x240a, 0x00b0, 0x00b1,
0x2424, 0x240b, 0x2518, 0x2510,
0x250c, 0x2514, 0x253c, 0x23ba,
0x23bb, 0x2500, 0x23bc, 0x23bd,
0x251c, 0x2524, 0x2534, 0x252c,
0x2502, 0x2264, 0x2265, 0x03c0,
0x2260, 0x00a3, 0x00b7, 0x0020
};
static const wchar_t unitab_xterm_poorman[32] =
"*#****o~**+++++-----++++|****L. ";
#endif
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);
/* Should simplify with tty_put_char */
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] = 1;
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=,
* set-window-title=\E]0;title text\007,
*/
switch (c) {
case '%':
case '(':
case ')':
case '*':
case '+':
case ']':
s->esc1 = c;
s->state = TTY_STATE_ESC2;
break;
case '7': // sc (save_cursor)
case '8': // rc (restore_cursor)
case '=': // smkx (DECKPAM: Keypad application mode)
case '>': // rmkx, is2, rs2 (DECKPNM: Keypad numeric mode)
case 'D': // IND: exactly equivalent to LF
case 'E': // NEL: exactly equivalent to CR-LF
case 'M': // ri (scroll_reverse, RI: reverse index - backwards LF)
case 'Z': /* DECID: terminal type query */
case 'c': // rs1 (reset_1string)
/* RIS: restore power-on settings */
case 'H': // hts (set_tab)
// XXX: do these
default:
s->state = TTY_STATE_NORM;
break;
}
}
break;
case TTY_STATE_ESC2:
s->state = TTY_STATE_NORM;
s->esc2 = c;
switch (ESC2(s->esc1, c)) {
case ESC2('%','G'): /* set utf mode */
case ESC2('%','8'): /* set utf mode */
case ESC2('%','@'): /* reset utf mode */
break;
case ESC2('(','A'): /* set charset0 CSET_GBCHR */
case ESC2('(','U'): /* set charset0 CSET_SCOACS */
case ESC2('(','B'): /* set charset0 CSET_ASCII */
s->charset[0] = 0;
break;
case ESC2('(','0'): /* set charset0 CSET_LINEDRW */
s->charset[0] = 1;
break;
case ESC2(')','A'): /* set charset1 CSET_GBCHR */
case ESC2(')','U'): /* set charset1 CSET_SCOACS */
case ESC2(')','B'): /* set charset1 CSET_ASCII */
s->charset[1] = 0;
break;
case ESC2(')','0'): /* set charset1 CSET_LINEDRW */
s->charset[1] = 1;
break;
case ESC2('*','B'):
case ESC2('+','B'):
/* XXX: Todo */
break;
case ESC2(']','0'): /* xterm's set-window-title and icon */
case ESC2(']','1'): /* xterm's set-window-title */
case ESC2(']','2'): /* xterm's set-window-title */
case ESC2(']','4'): /* xterm's define-extended color */
case ESC2(']','W'): /* word-set (define char wordness) */
s->state = TTY_STATE_STRING;
break;
case ESC2(']','P'): /* linux set palette */
case ESC2(']','R'): /* linux reset palette */
/* XXX: Todo */
break;
}
s->shifted = s->charset[s->cset];
break;
case TTY_STATE_STRING:
/* CG: should store the string */
/* Stop string on CR or LF, for protection */
if (c == '\012' || c == '\015') {
s->state = TTY_STATE_NORM;
break;
}
/* Stop string on \a (^G) or M-\ -- need better test for ESC \ */
if (c == '\007' || c == 0234 || c == '\\') {
/* CG: ESC2(']','0') should set shell caption */
/* CG: ESC2(']','4') should parse color definition string */
/* (example: "\033]4;16;rgb:00/00/00\033\134" ) */
s->state = TTY_STATE_NORM;
}
break;
case TTY_STATE_CSI:
if (c == '?' || c == '=') {
s->esc1 = c;
break;
}
if (qe_isdigit(c)) {
if (s->nb_esc_params < MAX_ESC_PARAMS) {
if (!s->has_params[s->nb_esc_params]) {
s->esc_params[s->nb_esc_params] = 0;
s->has_params[s->nb_esc_params] = 1;
}
s->esc_params[s->nb_esc_params] =
s->esc_params[s->nb_esc_params] * 10 + c - '0';
}
break;
} else {
s->nb_esc_params++;
if (c == ';')
break;
s->state = TTY_STATE_NORM;
switch (ESC2(s->esc1,c)) {
case 'h': /* SM: toggle modes to high */
case ESC2('?','h'): /* set terminal mode */
/* 1047: alternate screen
* 1048: save / restore cursor
* 1049: save / restore cursor and alternate screen
* should grab all keys while active!
*/
if (s->esc_params[0] == 1047 ||
s->esc_params[0] == 1048 ||
s->esc_params[0] == 1049) {
if (s->is_shell == 1) {
/* only grab keys in interactive tty buffers */
s->grab_keys = 1;
qe_grab_keys(shell_key, s);
/* Should also clear screen */
}
}
break;
case 'i': /* MC: Media copy */
case ESC2('?','i'):
break;
case ESC2('?','l'): /* reset terminal mode */
if (s->esc_params[0] == 1047 ||
s->esc_params[0] == 1048 ||
s->esc_params[0] == 1049) {
if (s->is_shell == 1) {
qe_ungrab_keys();
s->grab_keys = 0;
}
}
break;
case 'A': /* CUU: move up N lines */
tty_goto_xy(s, 0, -s->esc_params[0], 3);
break;
case 'e': /* VPR: move down N lines */
case 'B': /* CUD: Cursor down */
tty_goto_xy(s, 0, s->esc_params[0], 3);
break;
case 'a': /* HPR: move right N cols */
case 'C': /* CUF: Cursor right */
tty_goto_xy(s, s->esc_params[0], 0, 3);
break;
case 'D': /* CUB: move left N cols */
tty_goto_xy(s, -s->esc_params[0], 0, 3);
break;
case 'F': /* CPL: move up N lines and CR */
tty_goto_xy(s, 0, -s->esc_params[0], 2);
break;
case 'G': /* CHA: goto column_address */
case '`': /* HPA: set horizontal posn */
tty_goto_xy(s, s->esc_params[0] - 1, 0, 2);
break;
case 'H': /* CUP: goto xy */
case 'f': /* HVP: set horz and vert posns at once */
tty_goto_xy(s, s->esc_params[1] - 1, s->esc_params[0] - 1, 0);
break;
case 'd':
/* goto y */
tty_goto_xy(s, 0, s->esc_params[0] - 1, 1);
break;
case 'J': /* ED: erase screen or parts of it */
/* 0: to end, 1: from begin, 2: all */
//put_status(NULL, "erase screen %d", s->esc_params[0]);