void tty_erase_screen (void)
{
#ifdef _WIN32
CONSOLE_SCREEN_BUFFER_INFO info;
if (!GetConsoleScreenBufferInfo (tty_stdout, &info)) {
printf ("tty_erase_screen: can't get Console buffer info!\r\n");
return;
}
if (info.srWindow.Top + 25 > info.dwSize.Y)
tty_start_y = info.dwSize.Y - 25;
else
tty_start_y = info.srWindow.Top;
tty_start_x = 0;
tty_max_x = 79;
tty_max_y = info.srWindow.Bottom;
#if 0
printf ("Cursor: X=%u, Y=%u\r\n", info.dwCursorPosition.X, info.dwCursorPosition.Y);
printf ("Max. window size: Width=%u, Height=%u\r\n", info.dwMaximumWindowSize.X, info.dwMaximumWindowSize.Y);
printf ("Size: Width=%u, Height=%u\r\n", info.dwSize.X, info.dwSize.Y);
printf ("Window: Bottom=%u, Left=%u, Right=%u, Top=%u\r\n", info.srWindow.Bottom, info.srWindow.Left, info.srWindow.Right, info.srWindow.Top);
printf ("Attributes: 0x%04x\r\n", info.wAttributes);
#endif
setregion (tty_start_x, tty_start_y,
' ', tty_attribs,
tty_max_x - tty_start_x + 1, tty_max_y - tty_start_y + 1);
setxy (tty_start_x, tty_start_y);
#else
printf ("\x1b[2J");
tty_gotoxy (1, 1);
fflush (stdout);
#endif
}
void screensaver()
{
c[1] = 0;
while(1)
{
for (j=0;j<10;j++)
{
for (i=1;i<25;i++)
{
disp[j][i] = disp[j][i-1];
}
}
for (j=0;j<10;j++)
{
i = uniform(3)+1;
switch (i)
{
case 1:
disp[j][0] = uniform(2)+48;
break;
case 2:
disp[j][0] = ' ';
break;
case 3:
disp[j][0] = ' ';
break;
}
}
for (i=0;i<25;i++)
{
for (j=0;j<10;j++)
{
tty_gotoxy(scr_handle,(j+1)*(6+uniform(4)),i);
c[0] = disp[j][i] + uniform(1);
tty_print(scr_handle,c);
}
//delay(2);
}
delay(3);
}
delay(1);
}
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);
}
/*
* start an editing session: process the EDIT/VIEW message
* if view == 1, text will be viewed, else edited
*/
void message_edit __P4 (char *,text, int,msglen, char,view, char,builtin)
{
char tmpname[BUFSIZE], command_str[BUFSIZE], buf[BUFSIZE];
char *errdesc = "#warning: protocol error (message_edit, no %s)\n";
int tmpfd, i, childpid;
unsigned int key;
editsess *s;
char *editor, *descr;
char *args[4];
int waitforeditor;
status(1);
args[0] = "/bin/sh"; args[1] = "-c";
args[2] = command_str; args[3] = 0;
if (view) {
key = (unsigned int)-1;
i = 0;
} else {
if (text[0] != 'M') {
tty_printf(errdesc, "M");
free(text);
return;
}
for (i = 1; i < msglen && isdigit(text[i]); i++)
;
if (text[i++] != '\n' || i >= msglen) {
tty_printf(errdesc, "\\n");
free(text);
return;
}
key = strtoul(text + 1, NULL, 10);
}
descr = text + i;
while (i < msglen && text[i] != '\n') i++;
if (i >= msglen) {
tty_printf(errdesc, "desc");
free(text);
return;
}
text[i++] = '\0';
sprintf(tmpname, "/tmp/powwow.%u.%d%d", key, getpid(), abs(rand()) >> 8);
if ((tmpfd = open(tmpname, O_WRONLY | O_CREAT, 0600)) < 0) {
errmsg("create temp edit file");
free(text);
return;
}
if (write(tmpfd, text + i, msglen - i) < msglen - i) {
errmsg("write to temp edit file");
free(text);
close(tmpfd);
return;
}
close(tmpfd);
s = (editsess*)malloc(sizeof(editsess));
if (!s) {
errmsg("malloc");
return;
}
s->ctime = time((time_t*)NULL);
s->oldsize = msglen - i;
s->key = key;
s->fd = (view || builtin) ? -1 : tcp_fd; /* MUME doesn't expect a reply. */
s->cancel = 0;
s->descr = my_strdup(descr);
s->file = my_strdup(tmpname);
free(text);
/* send a edit_start message (if wanted) */
if ((!edit_sess) && (*edit_start)) {
error = 0;
parse_instruction(edit_start, 0, 0, 1);
history_done = 0;
}
if (view) {
if (!(editor = getenv("POWWOWPAGER")) && !(editor = getenv("PAGER")))
editor = "more";
} else {
if (!(editor = getenv("POWWOWEDITOR")) && !(editor = getenv("EDITOR")))
editor = "emacs";
}
if (editor[0] == '&') {
waitforeditor = 0;
editor++;
} else
waitforeditor = 1;
if (waitforeditor) {
tty_quit();
/* ignore SIGINT since interrupting the child would interrupt us too,
if we are in the same tty group */
sig_permanent(SIGINT, SIG_IGN);
sig_permanent(SIGCHLD, SIG_DFL);
}
switch(childpid = fork()) { /* let's get schizophrenic */
case 0:
sprintf(command_str, "%s %s", editor, s->file);
sprintf(buf, "TITLE=%s", s->descr);
putenv(buf);
/* setenv("TITLE", s->descr, 1);*/
execvp((char *)args[0], (char **)args);
syserr("execve");
break;
case -1:
errmsg("fork");
free(s->descr);
free(s->file);
free(s);
return;
}
s->pid = childpid;
if (waitforeditor) {
while ((i = waitpid(childpid, (int*)NULL, 0)) == -1 && errno == EINTR)
;
signal_start(); /* reset SIGINT and SIGCHLD handlers */
tty_start();
if (s->fd != -1) {
tty_gotoxy(0, lines - 1);
tty_putc('\n');
}
if (i == -1)
errmsg("waitpid");
else
finish_edit(s);
free(s->descr);
free(s->file);
if (i != -1 && !edit_sess && *edit_end) {
error = 0;
parse_instruction(edit_end, 0, 0, 1);
history_done = 0;
}
free(s);
} else {
s->next = edit_sess;
edit_sess = 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);
}