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evil-qemacs/shell.c
Charlie Gordon 658149e9f8 moved global variables to QEmacsState structure: 
- first_mode, first_key, first_cmd,
 - first_completion, first_history
 - trace_buffer, trace_buffer_state,
 - backspace_is_control_h
2007-12-21 12:30:55 +00:00

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/*
* Shell mode for QEmacs.
*
* Copyright (c) 2001, 2002 Fabrice Bellard.
*
* 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
*/
#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, 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;
int shifted;
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;
static int shell_get_colorized_line(EditState *e,
unsigned int *buf, int buf_size,
int offset, int line_num);
/* move to mode */
static int shell_launched = 0;
static int shell_mode_init(EditState *s, __unused__ ModeSavedData *saved_data)
{
s->tab_size = 8;
s->wrap = WRAP_TRUNCATE;
s->interactive = 1;
set_colorize_func(s, NULL);
s->get_colorized_line_func = shell_get_colorized_line;
return 0;
}
#define PTYCHAR1 "pqrstuvwxyz"
#define PTYCHAR2 "0123456789abcdef"
/* allocate one pty/tty pair */
static int get_pty(char *tty_str)
{
int fd;
char ptydev[] = "/dev/pty??";
char ttydev[] = "/dev/tty??";
int len = strlen(ttydev);
const char *c1, *c2;
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) {
strcpy(tty_str, ttydev);
return fd;
}
close(fd);
}
}
}
return -1;
}
static int run_process(const char *path, const char **argv,
int *fd_ptr, int *pid_ptr)
{
int pty_fd, pid, i, nb_fds;
char tty_name[32];
struct winsize ws;
pty_fd = get_pty(tty_name);
if (pty_fd < 0) {
put_status(NULL, "run_process: cannot get tty");
return -1;
}
fcntl(pty_fd, F_SETFL, O_NONBLOCK);
/* set dummy screen size */
ws.ws_col = 80;
ws.ws_row = 25;
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 */
open(tty_name, O_RDWR);
dup(0);
dup(0);
setsid();
//setenv("TERM", "linux", 1);
//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 */
#define TTY_YSIZE 25
static void tty_init(ShellState *s)
{
char *term;
s->state = TTY_STATE_NORM;
s->cur_offset = 0;
s->def_color = TTY_GET_COLOR(7, 0);
s->color = s->def_color;
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, NULL) != '\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 = 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)
{
/* we handle only a few possible modes */
switch (has_param ? c : 0) {
case 0: /* exit_attribute_mode */
s->color = s->def_color;
break;
case 1: /* enter_bold_mode */
/* CG: should use high intensity colors */
break;
case 4: /* enter_underline_mode */
case 5: /* enter_blink_mode */
case 7: /* enter_reverse_mode, enter_standout_mode */
case 8: /* enter_secure_mode */
case 24: /* exit_underline_mode */
case 27: /* exit_standout_mode */
case 39: /* orig_pair(1) */
case 49: /* orig_pair(2) */
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 */
s->color = TTY_GET_COLOR(c - 30, TTY_GET_BG(s->color));
} else
if (c >= 40 && c <= 47) {
/* set background color */
s->color = TTY_GET_COLOR(TTY_GET_FG(s->color), c - 40);
}
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 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 */
// was in qemacs-0.3.1.g2.gw
//eb_set_charset(s->b, &charset_8859_1);
s->shifted = 1;
break;
case 15: /* ^O SI = shift in */
// was in qemacs-0.3.1.g2.gw
//eb_set_charset(s->b, &charset_cp1125);
s->shifted = 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)
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 ']':
s->esc1 = c;
s->state = TTY_STATE_ESC2;
break;
case 'H': // hts (set_tab)
case '7': // sc (save_cursor)
case '8': // rc (restore_cursor)
case 'M': // ri (scroll_reverse)
case 'c': // rs1 (reset_1string)
case '>': // rmkx, is2, rs2 (keypad_local ???)
case '=': // smkx (keypad_xmit ???)
// 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'): /* exit_alt_charset_mode */
s->shifted = 0;
break;
case ESC2('(','0'): /* enter_alt_charset_mode */
s->shifted = 1;
break;
case ESC2(')','B'):
case ESC2(')','0'):
case ESC2('*','B'):
case ESC2('+','B'):
case ESC2(']','R'):
/* XXX: ??? */
break;
case ESC2(']','0'):
/* xterm's set-window-title */
s->state = TTY_STATE_STRING;
break;
}
break;
case TTY_STATE_STRING:
/* ignore string parameter upto \a (^G) */
if (c == '\007') {
s->state = TTY_STATE_NORM;
}
break;
case TTY_STATE_CSI:
if (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 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_goto_xy(s, 0, -s->esc_params[0], 3);
break;
case 'B':
/* move relative down */
tty_goto_xy(s, 0, s->esc_params[0], 3);
break;
case 'C':
/* move relative forward */
tty_goto_xy(s, s->esc_params[0], 0, 3);
break;
case 'D':
/* move relative backward */
tty_goto_xy(s, -s->esc_params[0], 0, 3);
break;
case 'G':
/* goto column_address */
tty_goto_xy(s, s->esc_params[0] - 1, 0, 2);
break;
case 'H':
/* goto xy */
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': /* clear to end of screen */
case 'L': /* insert lines */
case 'M': /* delete lines */
case 'S': /* scroll forward n lines */
case 'T': /* scroll back n lines */
break;
case 'X': /* erase n characters */
for (n = s->esc_params[0]; n > 0; n--) {
s->cur_offset = tty_put_char(s, ' ');
}
break;
case 'K': /* clear eol (parm=1 -> bol) */
offset1 = eb_goto_eol(s->b, s->cur_offset);
eb_delete(s->b, s->cur_offset, offset1 - s->cur_offset);
break;
case 'P':
/* delete chars */
offset1 = s->cur_offset;
for (n = s->esc_params[0]; 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 */
buf1[0] = ' ';
for (n = s->esc_params[0]; 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], s->has_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];
int col_num, cur_line;
eb_get_pos(s->b, &cur_line, &col_num, s->cur_offset);
/* XXX: actually send position of point in window */
snprintf(buf2, sizeof(buf2), "\033[%d;%dR",
1, col_num + 1);
tty_write(s, buf2, -1);
}
break;
case 'r': /* change_scroll_region (2 args) */
break;
default:
break;
}
}
break;
}
#undef ESC2
tty_update_cursor(s);
}
/* modify the color according to the current one (may be incorrect if
we are editing because we should write default color) */
static void shell_color_callback(__unused__ EditBuffer *b,
void *opaque,
enum LogOperation op,
int offset,
int size)
{
ShellState *s = opaque;
unsigned char buf[32];
int len;
switch (op) {
case LOGOP_WRITE:
while (size > 0) {
len = size;
if (len > ssizeof(buf))
len = ssizeof(buf);
memset(buf, s->color, len);
eb_write(s->b_color, offset, buf, len);
size -= len;
offset += len;
}
break;
case LOGOP_INSERT:
while (size > 0) {
len = size;
if (len > ssizeof(buf))
len = ssizeof(buf);
memset(buf, s->color, len);
eb_insert(s->b_color, offset, buf, len);
size -= len;
}
break;
case LOGOP_DELETE:
eb_delete(s->b_color, offset, size);
break;
default:
break;
}
}
static int shell_get_colorized_line(EditState *e,
unsigned int *buf, int buf_size,
int offset, __unused__ int line_num)
{
EditBuffer *b = e->b;
ShellState *s = b->priv_data;
EditBuffer *b_color = s->b_color;
int color, offset1, c;
unsigned int *buf_ptr, *buf_end;
unsigned char buf1[1];
/* record line */
buf_ptr = buf;
buf_end = buf + buf_size;
for (;;) {
eb_read(b_color, offset, buf1, 1);
color = buf1[0];
c = eb_nextc(b, offset, &offset1);
if (c == '\n')
break;
if (buf_ptr < buf_end) {
/* XXX: test */
if (color != s->def_color) {
c |= (QE_STYLE_TTY | color) << STYLE_SHIFT;
}
*buf_ptr++ = c;
}
offset = offset1;
}
return buf_ptr - buf;
}
/* buffer related functions */
/* called when characters are available on the tty */
static void shell_read_cb(void *opaque)
{
ShellState *s = opaque;
QEmacsState *qs = s->qe_state;
unsigned char buf[1024];
int len, i;
len = read(s->pty_fd, buf, sizeof(buf));
if (len <= 0)
return;
if (qs->trace_buffer)
eb_trace_bytes(buf, len, EB_TRACE_SHELL);
for (i = 0; i < len; i++)
tty_emulate(s, buf[i]);
/* now we do some refresh */
edit_display(qs);
dpy_flush(qs->screen);
}
static void shell_pid_cb(void *opaque, int status)
{
ShellState *s = opaque;
EditBuffer *b = s->b;
QEmacsState *qs = s->qe_state;
EditState *e;
char buf[1024];
if (s->is_shell) {
snprintf(buf, sizeof(buf), "\nProcess shell finished\n");
} else {
time_t ti;
char *time_str;
ti = time(NULL);
time_str = ctime(&ti);
if (WIFEXITED(status))
status = WEXITSTATUS(status);
else
status = -1;
if (status == 0) {
snprintf(buf, sizeof(buf), "\nCompilation finished at %s",
time_str);
} else {
snprintf(buf, sizeof(buf), "\nCompilation exited abnormally with code %d at %s",
status, time_str);
}
}
eb_write(b, b->total_size, buf, strlen(buf));
set_pid_handler(s->pid, NULL, NULL);
s->pid = -1;
/* no need to leave the pty opened */
if (s->pty_fd >= 0) {
set_read_handler(s->pty_fd, NULL, NULL);
close(s->pty_fd);
s->pty_fd = -1;
}
/* remove shell input mode */
s->grab_keys = 0;
qe_ungrab_keys();
for (e = qs->first_window; e != NULL; e = e->next_window) {
if (e->b == b)
e->interactive = 0;
}
edit_display(qs);
dpy_flush(qs->screen);
}
static void shell_close(EditBuffer *b)
{
ShellState *s = b->priv_data;
int status;
eb_free_callback(b, eb_offset_callback, &s->cur_offset);
if (s->pid != -1) {
kill(s->pid, SIGINT);
/* wait first 100 ms */
usleep(100 * 1000);
if (waitpid(s->pid, &status, WNOHANG) != s->pid) {
/* if still not killed, then try harder (useful for
shells) */
kill(s->pid, SIGKILL);
/* CG: should add timeout facility and error message */
while (waitpid(s->pid, &status, 0) != s->pid);
}
s->pid = -1;
}
if (s->pty_fd >= 0) {
set_read_handler(s->pty_fd, NULL, NULL);
}
qe_free(&s);
}
EditBuffer *new_shell_buffer(EditBuffer *b0, const char *name,
const char *path, const char **argv,
int is_shell)
{
ShellState *s;
EditBuffer *b, *b_color;
b = b0;
if (!b)
b = eb_new("", BF_SAVELOG);
if (!b)
return NULL;
set_buffer_name(b, name); /* ensure that the name is unique */
eb_set_charset(b, &charset_vt100);
s = qe_mallocz(ShellState);
if (!s) {
if (!b0)
eb_free(b);
return NULL;
}
b->priv_data = s;
b->close = shell_close;
eb_add_callback(b, eb_offset_callback, &s->cur_offset);
s->b = b;
s->pty_fd = -1;
s->pid = -1;
s->is_shell = is_shell;
s->qe_state = &qe_state;
tty_init(s);
/* add color buffer */
if (is_shell) {
b_color = eb_new("*color*", BF_SYSTEM);
if (!b_color) {
if (!b0)
eb_free(b);
qe_free(&s);
return NULL;
}
/* no undo info in this color buffer */
b_color->save_log = 0;
eb_add_callback(b, shell_color_callback, s);
s->b_color = b_color;
}
/* launch shell */
if (run_process(path, argv, &s->pty_fd, &s->pid) < 0) {
if (!b0)
eb_free(b);
return NULL;
}
set_read_handler(s->pty_fd, shell_read_cb, s);
set_pid_handler(s->pid, shell_pid_cb, s);
return b;
}
static void do_shell(EditState *s, int force)
{
QEmacsState *qs = s->qe_state;
EditState *e;
EditBuffer *b;
const char *argv[3];
const char *shell_path;
/* CG: Should prompt for buffer name if arg:
* find a syntax for optional string argument w/ prompt
*/
/* find shell buffer if any */
if (!force || force == NO_ARG) {
b = eb_find("*shell*");
if (b) {
e = edit_find(b);
if (e)
qs->active_window = e;
else
switch_to_buffer(s, b);
return;
}
}
/* find shell name */
shell_path = getenv("SHELL");
if (!shell_path)
shell_path = "/bin/sh";
/* create new buffer */
argv[0] = shell_path;
argv[1] = NULL;
b = new_shell_buffer(NULL, "*shell*", shell_path, argv, 1);
if (!b)
return;
switch_to_buffer(s, b);
do_set_mode(s, &shell_mode, NULL);
put_status(s, "Press C-o to toggle between shell/edit mode");
shell_launched = 1;
}
static void shell_move_left_right(EditState *e, int dir)
{
if (e->interactive) {
ShellState *s = e->b->priv_data;
tty_write(s, dir > 0 ? s->kcuf1 : s->kcub1, -1);
} else {
text_move_left_right_visual(e, dir);
}
}
static void shell_move_word_left_right(EditState *e, int dir)
{
if (e->interactive) {
ShellState *s = e->b->priv_data;
tty_write(s, dir > 0 ? "\033f" : "\033b", -1);
} else {
text_move_word_left_right(e, dir);
}
}
static void shell_move_up_down(EditState *e, int dir)
{
if (e->interactive) {
ShellState *s = e->b->priv_data;
tty_write(s, dir > 0 ? s->kcud1 : s->kcuu1, -1);
} else {
text_move_up_down(e, dir);
}
}
static void shell_scroll_up_down(EditState *e, int dir)
{
ShellState *s = e->b->priv_data;
e->interactive = 0;
text_scroll_up_down(e, dir);
e->interactive = (e->offset == s->cur_offset);
}
static void shell_move_bol(EditState *e)
{
if (e->interactive) {
ShellState *s = e->b->priv_data;
tty_write(s, "\001", 1); /* Control-A */
} else {
text_move_bol(e);
}
}
static void shell_move_eol(EditState *e)
{
if (e->interactive) {
ShellState *s = e->b->priv_data;
tty_write(s, "\005", 1); /* Control-E */
} else {
text_move_eol(e);
}
}
static void shell_write_char(EditState *e, int c)
{
char ch;
if (e->interactive) {
ShellState *s = e->b->priv_data;
ch = c;
/* TODO: convert to tty escape sequences? */
tty_write(s, &ch, 1);
} else {
/* Should dispatch as in fundamental mode */
switch (c) {
case 4:
do_delete_char(e, NO_ARG);
break;
// Do not do this: it is useless and causes infinite recursion
//case 9:
// do_tab(e);
// break;
case 11:
do_kill_line(e, 1);
break;
case 127:
do_backspace(e, NO_ARG);
break;
case '\r':
do_return(e);
break;
default:
text_write_char(e, c);
break;
}
}
}
static void do_shell_toggle_input(EditState *e)
{
e->interactive = !e->interactive;
if (e->interactive) {
ShellState *s = e->b->priv_data;
if (s->grab_keys)
qe_grab_keys(shell_key, s);
}
#if 0
if (e->interactive) {
ShellState *s = e->b->priv_data;
tty_update_cursor(s);
}
#endif
}
/* CG: these variables should move to mode structure */
static int error_offset = -1;
static int last_line_num = -1;
static char last_filename[MAX_FILENAME_SIZE];
static void do_compile(EditState *e, const char *cmd)
{
const char *argv[4];
EditBuffer *b;
/* if the buffer already exists, kill it */
b = eb_find("*compilation*");
if (b) {
/* XXX: e should not become invalid */
b->modified = 0;
do_kill_buffer(e, "*compilation*");
}
error_offset = -1;
last_line_num = -1;
/* create new buffer */
argv[0] = "/bin/sh";
argv[1] = "-c";
argv[2] = (char *)cmd;
argv[3] = NULL;
b = new_shell_buffer(NULL, "*compilation*", "/bin/sh", argv, 0);
if (!b)
return;
/* XXX: try to split window if necessary */
switch_to_buffer(e, b);
}
static void do_compile_error(EditState *s, int dir)
{
QEmacsState *qs = s->qe_state;
EditState *e;
EditBuffer *b;
int offset, found_offset;
char filename[MAX_FILENAME_SIZE], *q;
int line_num, c;
/* CG: should have a buffer flag for error source.
* first check if current buffer is an error source.
* if not, then scan for appropriate error source
* in buffer least recently used order
*/
if ((b = eb_find("*compilation*")) == NULL
&& (b = eb_find("*shell*")) == NULL
&& (b = eb_find("*errors*")) == NULL) {
put_status(s, "No compilation buffer");
return;
}
/* find next/prev error */
offset = error_offset;
if (offset < 0) {
offset = 0;
goto find_error;
}
for (;;) {
if (dir > 0) {
if (offset >= b->total_size) {
put_status(s, "No more errors");
return;
}
offset = eb_next_line(b, offset);
} else {
if (offset <= 0) {
put_status(s, "No previous error");
return;
}
offset = eb_prev_line(b, offset);
}
find_error:
found_offset = offset;
/* extract filename */
q = filename;
for (;;) {
c = eb_nextc(b, offset, &offset);
if (c == '\n' || c == '\t' || c == ' ')
goto next_line;
if (c == ':')
break;
if ((q - filename) < ssizeof(filename) - 1)
*q++ = c;
}
*q = '\0';
/* extract line number */
line_num = 0;
for (;;) {
c = eb_nextc(b, offset, &offset);
if (c == ':')
break;
if (!qe_isdigit(c))
goto next_line;
line_num = line_num * 10 + c - '0';
}
if (line_num >= 1) {
if (line_num != last_line_num ||
strcmp(filename, last_filename) != 0) {
last_line_num = line_num;
pstrcpy(last_filename, sizeof(last_filename), filename);
break;
}
}
next_line:
offset = found_offset;
}
error_offset = found_offset;
/* update offsets */
for (e = qs->first_window; e != NULL; e = e->next_window) {
if (e->b == b) {
e->offset = error_offset;
}
}
/* CG: Should remove popups, sidepanes, helppanes... */
/* go to the error */
do_load(s, filename);
do_goto_line(s, line_num);
}
/* specific shell commands */
static CmdDef shell_commands[] = {
CMD0( KEY_CTRL('o'), KEY_NONE, "shell-toggle-input", do_shell_toggle_input)
CMD1( '\r', KEY_NONE, "shell-return", shell_write_char, '\r')
/* CG: should send s->kbs */
CMD1( 127, KEY_NONE, "shell-backward-delete-char", shell_write_char, 127)
CMD1( KEY_CTRL('c'), KEY_NONE, "shell-intr", shell_write_char, 3)
CMD1( KEY_CTRL('d'), KEY_DELETE, "shell-delete-char", shell_write_char, 4)
CMD1( KEY_CTRL('i'), KEY_NONE, "shell-tabulate", shell_write_char, 9)
CMD1( KEY_CTRL('k'), KEY_NONE, "shell-kill-line", shell_write_char, 11)
CMD1( KEY_CTRL('y'), KEY_NONE, "shell-yank", shell_write_char, 25)
CMD_DEF_END,
};
/* compilation commands */
static CmdDef compile_commands[] = {
CMD_( KEY_CTRLXRET('\r'), KEY_NONE, "shell", do_shell, "ui")
CMD_( KEY_CTRLX(KEY_CTRL('e')), KEY_NONE, "compile", do_compile,
"s{Compile command: }|compile|")
CMD1( KEY_CTRLX(KEY_CTRL('p')), KEY_NONE, "previous-error",
do_compile_error, -1) /* u */
CMD1( KEY_CTRLX(KEY_CTRL('n')), KEY_CTRLX('`'), "next-error",
do_compile_error, 1) /* u */
CMD_DEF_END,
};
static int shell_init(void)
{
/* first register mode */
memcpy(&shell_mode, &text_mode, sizeof(ModeDef));
shell_mode.name = "shell";
shell_mode.mode_probe = NULL;
shell_mode.mode_init = shell_mode_init;
shell_mode.display_hook = shell_display_hook;
shell_mode.move_left_right = shell_move_left_right;
shell_mode.move_word_left_right = shell_move_word_left_right;
shell_mode.move_up_down = shell_move_up_down;
shell_mode.scroll_up_down = shell_scroll_up_down;
shell_mode.move_bol = shell_move_bol;
shell_mode.move_eol = shell_move_eol;
shell_mode.write_char = shell_write_char;
shell_mode.mode_flags |= MODEF_NOCMD;
qe_register_mode(&shell_mode);
/* commands and default keys */
qe_register_cmd_table(shell_commands, "shell");
qe_register_cmd_table(compile_commands, NULL);
return 0;
}
qe_module_init(shell_init);
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