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kbd.c
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kbd.c
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/* kbd.c
* (c) 2002 Mikulas Patocka
* This file is a part of the Links program, released under GPL.
*/
#include "links.h"
#define OUT_BUF_SIZE 16384
#define IN_BUF_SIZE 16
#define USE_TWIN_MOUSE 1
#define TW_BUTT_LEFT 1
#define TW_BUTT_MIDDLE 2
#define TW_BUTT_RIGHT 4
struct itrm {
int std_in;
int std_out;
int sock_in;
int sock_out;
int ctl_in;
int blocked;
struct termios t;
int flags;
unsigned char kqueue[IN_BUF_SIZE];
int qlen;
int tm;
void (*queue_event)(struct itrm *, unsigned char *, int);
unsigned char *ev_queue;
int eqlen;
void *mouse_h;
unsigned char *orig_title;
void (*free_trm)(struct itrm *);
};
static void free_trm(struct itrm *);
static void in_kbd(struct itrm *);
static void in_sock(struct itrm *);
static struct itrm *ditrm = NULL;
int is_blocked(void)
{
return ditrm && ditrm->blocked;
}
void free_all_itrms(void)
{
if (ditrm) ditrm->free_trm(ditrm);
}
static void itrm_error(struct itrm *itrm)
{
itrm->free_trm(itrm);
terminate_loop = 1;
}
static void write_ev_queue(struct itrm *itrm)
{
int l;
if (!itrm->eqlen) internal("event queue empty");
EINTRLOOP(l, write(itrm->sock_out, itrm->ev_queue, itrm->eqlen > 128 ? 128 : itrm->eqlen));
if (l == -1) {
itrm_error(itrm);
return;
}
memmove(itrm->ev_queue, itrm->ev_queue + l, itrm->eqlen -= l);
if (!itrm->eqlen) set_handlers(itrm->sock_out, (void (*)(void *))get_handler(itrm->sock_out, H_READ), NULL, (void (*)(void *))get_handler(itrm->sock_out, H_ERROR), get_handler(itrm->sock_out, H_DATA));
}
static void queue_event(struct itrm *itrm, unsigned char *data, int len);
static void mouse_queue_event(struct itrm *itrm, unsigned char *data, int len)
{
if (itrm->blocked) return;
queue_event(itrm, data, len);
}
static void queue_event(struct itrm *itrm, unsigned char *data, int len)
{
int w = 0;
if (!len) return;
if (!itrm->eqlen && can_write(itrm->sock_out)) {
EINTRLOOP(w, write(itrm->sock_out, data, len));
if (w <= 0) {
register_bottom_half((void (*)(void *))itrm_error, itrm);
return;
}
}
if (w < len) {
if ((unsigned)itrm->eqlen + (unsigned)(len - w) > MAXINT) overalloc();
itrm->ev_queue = mem_realloc(itrm->ev_queue, itrm->eqlen + len - w);
memcpy(itrm->ev_queue + itrm->eqlen, data + w, len - w);
itrm->eqlen += len - w;
set_handlers(itrm->sock_out, (void (*)(void *))get_handler(itrm->sock_out, H_READ), (void (*)(void *))write_ev_queue, (void (*)(void *))itrm_error, itrm);
}
}
void kbd_ctrl_c(void)
{
struct event ev = { EV_KBD, KBD_CTRL_C, 0, 0 };
if (ditrm) ditrm->queue_event(ditrm, (unsigned char *)&ev, sizeof(struct event));
}
unsigned char init_seq[] = "\033)0\0337";
unsigned char init_seq_x_mouse[] = "\033[?1000h\033[?1002h\033[?1005h\033[?1006l\033[?1015l";
unsigned char init_seq_tw_mouse[] = "\033[?9h";
unsigned char term_seq[] = "\033[2J\0338\r \b";
unsigned char term_seq_x_mouse[] = "\033[?1000l\r \r\033[?1002l\r \r\033[?1005l\r \r";
unsigned char term_seq_tw_mouse[] = "\033[?9l";
static void send_init_sequence(int h, int flags)
{
want_draw();
hard_write(h, init_seq, strlen(cast_const_char init_seq));
if (flags & USE_TWIN_MOUSE) {
hard_write(h, init_seq_tw_mouse, strlen(cast_const_char init_seq_tw_mouse));
} else {
hard_write(h, init_seq_x_mouse, strlen(cast_const_char init_seq_x_mouse));
}
done_draw();
}
static void send_term_sequence(int h, int flags)
{
want_draw();
hard_write(h, term_seq, strlen(cast_const_char term_seq));
if (flags & USE_TWIN_MOUSE) {
hard_write(h, term_seq_tw_mouse, strlen(cast_const_char term_seq_tw_mouse));
} else {
hard_write(h, term_seq_x_mouse, strlen(cast_const_char term_seq_x_mouse));
}
done_draw();
}
void resize_terminal(void)
{
struct event ev = { EV_RESIZE, 0, 0, 0 };
int x, y;
if (get_terminal_size(ditrm->std_out, &x, &y)) return;
ev.x = x;
ev.y = y;
queue_event(ditrm, (unsigned char *)&ev, sizeof(struct event));
}
static int ttcgetattr(int fd, struct termios *t)
{
int r;
block_signals(
#ifdef SIGTTOU
SIGTTOU
#else
0
#endif
,
#ifdef SIGTTIN
SIGTTIN
#else
0
#endif
);
#ifdef SIGTTOU
interruptible_signal(SIGTTOU, 1);
#endif
#ifdef SIGTTIN
interruptible_signal(SIGTTIN, 1);
#endif
r = tcgetattr(fd, t);
#ifdef SIGTTOU
interruptible_signal(SIGTTOU, 0);
#endif
#ifdef SIGTTIN
interruptible_signal(SIGTTIN, 0);
#endif
unblock_signals();
return r;
}
static int ttcsetattr(int fd, int a, struct termios *t)
{
int r;
block_signals(
#ifdef SIGTTOU
SIGTTOU
#else
0
#endif
,
#ifdef SIGTTIN
SIGTTIN
#else
0
#endif
);
#ifdef SIGTTOU
interruptible_signal(SIGTTOU, 1);
#endif
#ifdef SIGTTIN
interruptible_signal(SIGTTIN, 1);
#endif
r = tcsetattr(fd, a, t);
#ifdef SIGTTOU
interruptible_signal(SIGTTOU, 0);
#endif
#ifdef SIGTTIN
interruptible_signal(SIGTTIN, 0);
#endif
unblock_signals();
return r;
}
static int setraw(int fd, struct termios *p)
{
struct termios t;
memset(&t, 0, sizeof(struct termios));
if (ttcgetattr(fd, &t)) {
/*fprintf(stderr, "getattr result %s\n", strerror(errno));*/
/* If the terminal was destroyed (the user logged off),
* we fake success here so that we can destroy the terminal
* later.
*
* Linux returns EIO
* FreeBSD returns ENXIO
*/
if (errno == EIO || errno == ENXIO) return 0;
return -1;
}
if (p) memcpy(p, &t, sizeof(struct termios));
os_cfmakeraw(&t);
t.c_lflag |= ISIG;
#ifdef TOSTOP
t.c_lflag |= TOSTOP;
#endif
t.c_oflag |= OPOST;
if (ttcsetattr(fd, TCSANOW, &t)) {
/*fprintf(stderr, "setattr result %s\n", strerror(errno));*/
return -1;
}
return 0;
}
void handle_trm(int std_in, int std_out, int sock_in, int sock_out, int ctl_in, void *init_string, int init_len)
{
int x, y;
struct itrm *itrm;
struct event ev = { EV_INIT, 80, 24, 0 };
unsigned char *ts;
int xwin;
if (get_terminal_size(ctl_in, &x, &y)) {
error("ERROR: could not get terminal size");
return;
}
itrm = mem_alloc(sizeof(struct itrm));
itrm->queue_event = queue_event;
itrm->free_trm = free_trm;
ditrm = itrm;
itrm->std_in = std_in;
itrm->std_out = std_out;
itrm->sock_in = sock_in;
itrm->sock_out = sock_out;
itrm->ctl_in = ctl_in;
itrm->blocked = 0;
itrm->qlen = 0;
itrm->tm = -1;
itrm->ev_queue = DUMMY;
itrm->eqlen = 0;
if (ctl_in >= 0) setraw(ctl_in, &itrm->t);
set_handlers(std_in, (void (*)(void *))in_kbd, NULL, (void (*)(void *))itrm_error, itrm);
if (sock_in != std_out) set_handlers(sock_in, (void (*)(void *))in_sock, NULL, (void (*)(void *))itrm_error, itrm);
ev.x = x;
ev.y = y;
handle_terminal_resize(ctl_in, resize_terminal);
queue_event(itrm, (unsigned char *)&ev, sizeof(struct event));
xwin = is_xterm() * ENV_XWIN + can_twterm() * ENV_TWIN + (!!getenv("STY")) * ENV_SCREEN + get_system_env();
itrm->flags = 0;
if (!(ts = cast_uchar getenv("TERM"))) ts = cast_uchar "";
if ((xwin & ENV_TWIN) && !strcmp(cast_const_char ts, "linux")) itrm->flags |= USE_TWIN_MOUSE;
if (strlen(cast_const_char ts) >= MAX_TERM_LEN) queue_event(itrm, ts, MAX_TERM_LEN);
else {
unsigned char *mm;
int ll = MAX_TERM_LEN - strlen(cast_const_char ts);
queue_event(itrm, ts, strlen(cast_const_char ts));
mm = mem_calloc(ll);
queue_event(itrm, mm, ll);
mem_free(mm);
}
if (!(ts = get_cwd())) ts = stracpy(cast_uchar "");
if (strlen(cast_const_char ts) >= MAX_CWD_LEN) queue_event(itrm, ts, MAX_CWD_LEN);
else {
unsigned char *mm;
int ll = MAX_CWD_LEN - strlen(cast_const_char ts);
queue_event(itrm, ts, strlen(cast_const_char ts));
mm = mem_calloc(ll);
queue_event(itrm, mm, ll);
mem_free(mm);
}
mem_free(ts);
queue_event(itrm, (unsigned char *)&xwin, sizeof(int));
queue_event(itrm, (unsigned char *)&init_len, sizeof(int));
queue_event(itrm, (unsigned char *)init_string, init_len);
itrm->mouse_h = handle_mouse(0, (void (*)(void *, unsigned char *, int))mouse_queue_event, itrm);
itrm->orig_title = get_window_title();
set_window_title(cast_uchar "Links");
send_init_sequence(std_out, itrm->flags);
}
static void unblock_itrm_x(void *h)
{
NO_GFX;
close_handle(h);
if (!ditrm) return;
unblock_itrm(0);
}
int unblock_itrm(int fd)
{
struct itrm *itrm = ditrm;
if (!itrm) return -1;
if (itrm->ctl_in >= 0 && setraw(itrm->ctl_in, NULL)) return -1;
if (itrm->blocked != fd + 1) return -2;
itrm->blocked = 0;
send_init_sequence(itrm->std_out, itrm->flags);
set_handlers(itrm->std_in, (void (*)(void *))in_kbd, NULL, (void (*)(void *))itrm_error, itrm);
handle_terminal_resize(itrm->ctl_in, resize_terminal);
unblock_stdin();
itrm->mouse_h = handle_mouse(0, (void (*)(void *, unsigned char *, int))mouse_queue_event, itrm);
resize_terminal();
return 0;
}
void block_itrm(int fd)
{
struct itrm *itrm = ditrm;
NO_GFX;
if (!itrm) return;
if (itrm->blocked) return;
itrm->blocked = fd + 1;
block_stdin();
unhandle_terminal_resize(itrm->ctl_in);
send_term_sequence(itrm->std_out, itrm->flags);
ttcsetattr(itrm->ctl_in, TCSANOW, &itrm->t);
if (itrm->mouse_h) unhandle_mouse(itrm->mouse_h), itrm->mouse_h = NULL;
set_handlers(itrm->std_in, NULL, NULL, (void (*)(void *))itrm_error, itrm);
}
static void free_trm(struct itrm *itrm)
{
if (!itrm) return;
set_window_title(itrm->orig_title);
if (itrm->orig_title) mem_free(itrm->orig_title), itrm->orig_title = NULL;
unhandle_terminal_resize(itrm->ctl_in);
send_term_sequence(itrm->std_out, itrm->flags);
ttcsetattr(itrm->ctl_in, TCSANOW, &itrm->t);
if (itrm->mouse_h) unhandle_mouse(itrm->mouse_h);
set_handlers(itrm->std_in, NULL, NULL, NULL, NULL);
set_handlers(itrm->sock_in, NULL, NULL, NULL, NULL);
set_handlers(itrm->std_out, NULL, NULL, NULL, NULL);
set_handlers(itrm->sock_out, NULL, NULL, NULL, NULL);
if (itrm->tm != -1) kill_timer(itrm->tm);
mem_free(itrm->ev_queue);
mem_free(itrm);
if (itrm == ditrm) ditrm = NULL;
}
void fatal_tty_exit(void)
{
if (ditrm) ttcsetattr(ditrm->ctl_in, TCSANOW, &ditrm->t);
}
static void resize_terminal_x(unsigned char *text)
{
int x, y;
unsigned char *p;
if (!(p = cast_uchar strchr(cast_const_char text, ','))) return;
*p++ = 0;
x = atoi(cast_const_char text);
y = atoi(cast_const_char p);
resize_window(x, y);
resize_terminal();
}
void dispatch_special(unsigned char *text)
{
switch (text[0]) {
case TERM_FN_TITLE:
set_window_title(text + 1);
break;
case TERM_FN_RESIZE:
resize_terminal_x(text + 1);
break;
}
}
static unsigned char buf[OUT_BUF_SIZE];
#define RD(xx) \
do { \
unsigned char cc; \
if (p < c) cc = buf[p++]; \
else if ((hard_read(itrm->sock_in, &cc, 1)) <= 0) { \
mem_free(path); \
mem_free(delete); \
goto fr; \
} \
xx = cc; \
} while (0)
static void in_sock(struct itrm *itrm)
{
unsigned char *path, *delete;
int pl, dl;
unsigned char ch;
int fg;
int c, i, p;
int rs;
EINTRLOOP(c, read(itrm->sock_in, buf, OUT_BUF_SIZE));
if (c <= 0) {
fr:
itrm_error(itrm);
return;
}
qwerty:
for (i = 0; i < c; i++) if (!buf[i]) goto ex;
if (!is_blocked()) {
want_draw();
hard_write(itrm->std_out, buf, c);
done_draw();
}
return;
ex:
if (!is_blocked()) {
want_draw();
hard_write(itrm->std_out, buf, i);
done_draw();
}
i++;
memmove(buf, buf + i, OUT_BUF_SIZE - i);
c -= i;
p = 0;
path = init_str();
delete = init_str();
pl = dl = 0;
RD(fg);
while (1) {
RD(ch);
if (!ch) break;
add_chr_to_str(&path, &pl, ch);
}
while (1) {
RD(ch);
if (!ch) break;
add_chr_to_str(&delete, &dl, ch);
}
if (!*path) {
dispatch_special(delete);
} else {
long blockh;
unsigned char *param;
if (is_blocked() && fg) {
if (*delete)
EINTRLOOP(rs, unlink(cast_const_char delete));
goto to_je_ale_hnus;
}
param = mem_alloc(strlen(cast_const_char path) + strlen(cast_const_char delete) + 3);
param[0] = fg;
strcpy(cast_char(param + 1), cast_const_char path);
strcpy(cast_char(param + 1 + strlen(cast_const_char path) + 1), cast_const_char delete);
if (fg == 1) block_itrm(0);
if ((blockh = start_thread((void (*)(void *, int))exec_thread, param, strlen(cast_const_char path) + strlen(cast_const_char delete) + 3)) == -1) {
if (fg == 1) unblock_itrm(0);
mem_free(param);
goto to_je_ale_hnus;
}
mem_free(param);
if (fg == 1) {
set_handlers(blockh, (void (*)(void *))unblock_itrm_x, NULL, (void (*)(void *))unblock_itrm_x, (void *)blockh);
} else {
set_handlers(blockh, close_handle, NULL, close_handle, (void *)blockh);
}
}
to_je_ale_hnus:
mem_free(path);
mem_free(delete);
memmove(buf, buf + p, OUT_BUF_SIZE - p);
c -= p;
goto qwerty;
}
static int process_queue(struct itrm *);
static int get_esc_code(unsigned char *, int, unsigned char *, int *, int *);
static void kbd_timeout(struct itrm *itrm)
{
struct event ev = { EV_KBD, KBD_ESC, 0, 0 };
unsigned char code;
int num;
int len = 0; /* against warning */
itrm->tm = -1;
if (can_read(itrm->std_in)) {
in_kbd(itrm);
return;
}
if (!itrm->qlen) {
internal("timeout on empty queue");
return;
}
itrm->queue_event(itrm, (unsigned char *)&ev, sizeof(struct event));
if (get_esc_code(itrm->kqueue, itrm->qlen, &code, &num, &len)) len = 1;
itrm->qlen -= len;
memmove(itrm->kqueue, itrm->kqueue + len, itrm->qlen);
while (process_queue(itrm))
;
}
static int get_esc_code(unsigned char *str, int len, unsigned char *code, int *num, int *el)
{
int pos;
*num = 0;
for (pos = 2; pos < len; pos++) {
if (str[pos] < '0' || str[pos] > '9' || pos > 7) {
*el = pos + 1;
*code = str[pos];
return 0;
}
*num = *num * 10 + str[pos] - '0';
}
return -1;
}
/*
struct os2_key {
int x, y;
};
*/
struct os2_key os2xtd[256] = {
/* 0 */
{0,0},
{0,0},
{' ',KBD_CTRL},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{KBD_BS,KBD_ALT},
{0,0},
/* 16 */
{'Q',KBD_ALT},
{'W',KBD_ALT},
{'E',KBD_ALT},
{'R',KBD_ALT},
{'T',KBD_ALT},
{'Y',KBD_ALT},
{'U',KBD_ALT},
{'I',KBD_ALT},
/* 24 */
{'O',KBD_ALT},
{'P',KBD_ALT},
{'[',KBD_ALT},
{']',KBD_ALT},
{KBD_ENTER,KBD_ALT},
{0,0},
{'A',KBD_ALT},
{'S',KBD_ALT},
/* 32 */
{'D',KBD_ALT},
{'F',KBD_ALT},
{'G',KBD_ALT},
{'H',KBD_ALT},
{'J',KBD_ALT},
{'K',KBD_ALT},
{'L',KBD_ALT},
{';',KBD_ALT},
/* 40 */
{'\'',KBD_ALT},
{'`',KBD_ALT},
{0,0},
{'\\',KBD_ALT},
{'Z',KBD_ALT},
{'X',KBD_ALT},
{'C',KBD_ALT},
{'V',KBD_ALT},
/* 48 */
{'B',KBD_ALT},
{'N',KBD_ALT},
{'M',KBD_ALT},
{',',KBD_ALT},
{'.',KBD_ALT},
{'/',KBD_ALT},
{0,0},
{'*',KBD_ALT},
/* 56 */
{0,0},
{' ',KBD_ALT},
{0,0},
{KBD_F1,0},
{KBD_F2,0},
{KBD_F3,0},
{KBD_F4,0},
{KBD_F5,0},
/* 64 */
{KBD_F6,0},
{KBD_F7,0},
{KBD_F8,0},
{KBD_F9,0},
{KBD_F10,0},
{0,0},
{0,0},
{KBD_HOME,0},
/* 72 */
{KBD_UP,0},
{KBD_PAGE_UP,0},
{'-',KBD_ALT},
{KBD_LEFT,0},
{'5',0},
{KBD_RIGHT,0},
{'+',KBD_ALT},
{KBD_END,0},
/* 80 */
{KBD_DOWN,0},
{KBD_PAGE_DOWN,0},
{KBD_INS,0},
{KBD_DEL,0},
{0,0},
{0,0},
{0,0},
{0,0},
/* 88 */
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{KBD_F1,KBD_CTRL},
{KBD_F2,KBD_CTRL},
/* 96 */
{KBD_F3,KBD_CTRL},
{KBD_F4,KBD_CTRL},
{KBD_F5,KBD_CTRL},
{KBD_F6,KBD_CTRL},
{KBD_F7,KBD_CTRL},
{KBD_F8,KBD_CTRL},
{KBD_F9,KBD_CTRL},
{KBD_F10,KBD_CTRL},
/* 104 */
{KBD_F1,KBD_ALT},
{KBD_F2,KBD_ALT},
{KBD_F3,KBD_ALT},
{KBD_F4,KBD_ALT},
{KBD_F5,KBD_ALT},
{KBD_F6,KBD_ALT},
{KBD_F7,KBD_ALT},
{KBD_F8,KBD_ALT},
/* 112 */
{KBD_F9,KBD_ALT},
{KBD_F10,KBD_ALT},
{0,0},
{KBD_LEFT,KBD_CTRL},
{KBD_RIGHT,KBD_CTRL},
{KBD_END,KBD_CTRL},
{KBD_PAGE_DOWN,KBD_CTRL},
{KBD_HOME,KBD_CTRL},
/* 120 */
{'1',KBD_ALT},
{'2',KBD_ALT},
{'3',KBD_ALT},
{'4',KBD_ALT},
{'5',KBD_ALT},
{'6',KBD_ALT},
{'7',KBD_ALT},
{'8',KBD_ALT},
/* 128 */
{'9',KBD_ALT},
{'0',KBD_ALT},
{'-',KBD_ALT},
{'=',KBD_ALT},
{KBD_PAGE_UP,KBD_CTRL},
{KBD_F11,0},
{KBD_F12,0},
{0,0},
/* 136 */
{0,0},
{KBD_F11,KBD_CTRL},
{KBD_F12,KBD_CTRL},
{KBD_F11,KBD_ALT},
{KBD_F12,KBD_ALT},
{KBD_UP,KBD_CTRL},
{'-',KBD_CTRL},
{'5',KBD_CTRL},
/* 144 */
{'+',KBD_CTRL},
{KBD_DOWN,KBD_CTRL},
{KBD_INS,KBD_CTRL},
{KBD_DEL,KBD_CTRL},
{KBD_TAB,KBD_CTRL},
{0,0},
{0,0},
{KBD_HOME,KBD_ALT},
/* 152 */
{KBD_UP,KBD_ALT},
{KBD_PAGE_UP,KBD_ALT},
{0,0},
{KBD_LEFT,KBD_ALT},
{0,0},
{KBD_RIGHT,KBD_ALT},
{0,0},
{KBD_END,KBD_ALT},
/* 160 */
{KBD_DOWN,KBD_ALT},
{KBD_PAGE_DOWN,KBD_ALT},
{KBD_INS,KBD_ALT},
{KBD_DEL,KBD_ALT},
{0,0},
{KBD_TAB,KBD_ALT},
{KBD_ENTER,KBD_ALT},
{0,0},
/* 168 */
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
/* 176 */
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
/* 192 */
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
/* 208 */
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
/* 224 */
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
/* 240 */
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
{0,0},
/* 256 */
};
static int xterm_button = -1;
static int is_interix(void)
{
#ifdef INTERIX
return 1;
#else
unsigned char *term = cast_uchar getenv("TERM");
return term && !strncmp(cast_const_char term, "interix", 7);
#endif
}
static int is_uwin(void)
{
#ifdef _UWIN
return 1;
#else
return 0;
#endif
}
static int is_ibm(void)
{
unsigned char *term = cast_uchar getenv("TERM");
return term && !strncmp(cast_const_char term, "ibm", 3);
}
static int process_queue(struct itrm *itrm)
{
struct event ev = { EV_KBD, -1, 0, 0 };
int el = 0;
if (!itrm->qlen) goto end;
/*{
int i;
fprintf(stderr, "queue:");
for (i = 0; i < itrm->qlen; i++) {
fprintf(stderr, " %d", itrm->kqueue[i]);
if (itrm->kqueue[i] >= 32) fprintf(stderr, "[%c]", itrm->kqueue[i]);
}
fprintf(stderr, ".\n");
}*/
if (itrm->kqueue[0] == '\033') {
if (itrm->qlen < 2) goto ret;
if (itrm->kqueue[1] == '[' || itrm->kqueue[1] == 'O') {
unsigned char c = 0;
int v;
if (itrm->qlen >= 4 && itrm->kqueue[2] == '[') {
if (itrm->kqueue[3] < 'A' || itrm->kqueue[3] > 'L') goto ret;
ev.x = KBD_F1 - (itrm->kqueue[3] - 'A');
el = 4;
} else if (get_esc_code(itrm->kqueue, itrm->qlen, &c, &v, &el)) goto ret;
else switch (c) {
case 'L':
case '@': ev.x = KBD_INS; break;
case 'A': ev.x = KBD_UP; break;
case 'B': ev.x = KBD_DOWN; break;
case 'C': ev.x = KBD_RIGHT; break;
case 'D': ev.x = KBD_LEFT; break;
case 'F':
case 'K':
case 'e': ev.x = KBD_END; break;
case 'H':
case 0: ev.x = KBD_HOME; break;
case 'V':
case 'I': ev.x = KBD_PAGE_UP; break;
case 'U':
if (is_interix()) {
ev.x = KBD_END;
break;
}
case 'G': ev.x = KBD_PAGE_DOWN; break;
case 'P':
if (is_ibm()) {
ev.x = KBD_DEL;
break;
}
ev.x = KBD_F1; break;
case 'Q': ev.x = KBD_F2; break;
case 'S':
if (is_interix()) {
ev.x = KBD_PAGE_UP;
break;
}
ev.x = KBD_F4; break;
case 'T':
if (is_interix()) {
ev.x = KBD_PAGE_DOWN;
break;
}
ev.x = KBD_F5; break;
case 'W': ev.x = KBD_F8; break;
case 'X': ev.x = KBD_F9; break;
case 'Y':
if (is_uwin())
ev.x = itrm->kqueue[1] == '[' ? KBD_END : KBD_F10;
else
ev.x = KBD_F11;
break;
case 'q': switch (v) {
case 139: ev.x = KBD_INS; break;
case 146: ev.x = KBD_END; break;
case 150: ev.x = KBD_PAGE_UP; break;
case 154: ev.x = KBD_PAGE_DOWN; break;
default: if (v >= 1 && v <= 48) {
int fn = (v - 1) % 12;
int mod = (v - 1) / 12;
ev.x = KBD_F1 - fn;
if (mod == 1)
ev.y |= KBD_SHIFT;
if (mod == 2)
ev.y |= KBD_CTRL;
if (mod == 3)
ev.y |= KBD_ALT;
} break;
} break;
case 'z': switch (v) {
case 247: ev.x = KBD_INS; break;
case 214: ev.x = KBD_HOME; break;
case 220: ev.x = KBD_END; break;
case 216: ev.x = KBD_PAGE_UP; break;
case 222: ev.x = KBD_PAGE_DOWN; break;
case 249: ev.x = KBD_DEL; break;
} break;
case '~': switch (v) {
case 1: ev.x = KBD_HOME; break;
case 2: ev.x = KBD_INS; break;
case 3: ev.x = KBD_DEL; break;
case 4: ev.x = KBD_END; break;
case 5: ev.x = KBD_PAGE_UP; break;
case 6: ev.x = KBD_PAGE_DOWN; break;
case 7: ev.x = KBD_HOME; break;
case 8: ev.x = KBD_END; break;
case 17: ev.x = KBD_F6; break;
case 18: ev.x = KBD_F7; break;
case 19: ev.x = KBD_F8; break;
case 20: ev.x = KBD_F9; break;
case 21: ev.x = KBD_F10; break;
case 23: ev.x = KBD_F11; break;
case 24: ev.x = KBD_F12; break;
} break;
case 'R':
resize_terminal();
break ;
case 'M':
if (v == 5) {
if (xterm_button == -1) xterm_button = 0; /* */
if (itrm->qlen - el < 5) goto ret;
ev.x = (unsigned char)(itrm->kqueue[el+1]) - ' ' - 1 + ((int)((unsigned char)(itrm->kqueue[el+2]) - ' ' - 1) << 7);
if ( ev.x & (1 << 13)) ev.x = 0; /* ev.x |= ~0 << 14; */
ev.y = (unsigned char)(itrm->kqueue[el+3]) - ' ' - 1 + ((int)((unsigned char)(itrm->kqueue[el+4]) - ' ' - 1) << 7);
if ( ev.y & (1 << 13)) ev.y = 0; /* ev.y |= ~0 << 14; */
switch ((itrm->kqueue[el] - ' ') ^ xterm_button) { /* Every event changhes only one bit */
case TW_BUTT_LEFT: ev.b = B_LEFT | ( (xterm_button & TW_BUTT_LEFT) ? B_UP : B_DOWN ); break;
case TW_BUTT_MIDDLE: ev.b = B_MIDDLE | ( (xterm_button & TW_BUTT_MIDDLE) ? B_UP : B_DOWN ); break;
case TW_BUTT_RIGHT: ev.b = B_RIGHT | ( (xterm_button & TW_BUTT_RIGHT) ? B_UP : B_DOWN ); break;
case 0: ev.b = B_DRAG;
/* default : Twin protocol error */
}
xterm_button = itrm->kqueue[el] - ' ';
el += 5;
} else {
int x, y, button;
if (itrm->qlen - el < 3) goto ret;
if ((itrm->kqueue[el] & ~0x1f) == 0x20) button = B_DOWN;
else if ((itrm->kqueue[el] & ~0x1f) == 0x40) button = B_DRAG;
else {
button = -1;
goto skip_button;
}
button |= itrm->kqueue[el] & 3;
if ((itrm->kqueue[el] & 3) == 3) {
if (xterm_button == -1)
xterm_button = B_LEFT;
button = B_UP;
button |= xterm_button;
}
xterm_button = button & BM_BUTT;