int execprg(int f, int n)
{
#ifndef WINNT
int s;
char line[NLINE];
#endif
/* don't allow this command if restricted */
if (restflag)
return resterr();
#if WINNT
mlwrite("(unsupported)");
return FALSE;
#endif
#if VMS
if ((s = mlreply("!", line, NLINE)) != TRUE)
return s;
TTflush();
s = sys(line); /* Run the command. */
mlputs("\r\n\n(End)"); /* Pause. */
TTflush();
tgetc();
sgarbf = TRUE;
return s;
#endif
#if MSDOS
if ((s = mlreply("$", line, NLINE)) != TRUE)
return s;
movecursor(term.t_nrow, 0);
TTkclose();
execprog(line);
TTkopen();
/* if we are interactive, pause here */
if (clexec == FALSE) {
mlputs("\r\n(End)");
tgetc();
}
sgarbf = TRUE;
return TRUE;
#endif
#if V7 | USG | BSD
if ((s = mlreply("!", line, NLINE)) != TRUE)
return s;
TTputc('\n'); /* Already have '\r' */
TTflush();
TTclose(); /* stty to old modes */
TTkclose();
system(line);
fflush(stdout); /* to be sure P.K. */
TTopen();
mlputs("(End)"); /* Pause. */
TTflush();
while ((s = tgetc()) != '\r' && s != ' ');
sgarbf = TRUE;
return TRUE;
#endif
}
execprg(f, n)
{
register int s;
char line[NLINE];
/* don't allow this command if restricted */
if (restflag)
return(resterr());
if ((s=mlreply("!", line, NLINE)) != TRUE)
return(s);
TTputc('\n'); /* Already have '\r' */
TTflush();
TTclose(); /* stty to old modes */
system(line);
TTopen();
mlputs(TEXT188); /* Pause. */
/* "[End]" */
TTflush();
while ((s = tgetc()) != '\r' && s != ' ')
;
sgarbf = TRUE;
return(TRUE);
}
/*
* Run a one-liner in a subjob. When the command returns, wait for a single
* character to be typed, then mark the screen as garbage so a full repaint is
* done. Bound to "C-X !".
*/
spawn(f, n)
{
register int s;
char line[NLINE];
/* don't allow this command if restricted */
if (restflag)
return(resterr());
if ((s=mlreply("!", line, NLINE)) != TRUE)
return(s);
TTputc('\n'); /* Already have '\r' */
TTflush();
TTclose(); /* stty to old modes */
system(line);
TTopen();
TTflush();
/* if we are interactive, pause here */
if (clexec == FALSE) {
mlputs(TEXT6);
/* "\r\n\n[End]" */
tgetc();
}
sgarbf = TRUE;
return(TRUE);
}
// Display a pop-up window and page it for the user. If altmodeline is true, display buffer name and filename (only) on bottom
// mode line. If endprompt is true, wait for user to press a key before returning (regardless of page size). Current bindings
// (if any) for backPage, forwPage, backLine, and forwLine commands are recognized as well as 'b' (backward page), 'f' or space
// (forward page), 'u' (backward half page), 'd' (forward half page), 'g' (goto first page), 'G' (goto last page), ESC or 'q'
// (exit), and '?' (help). Any non-navigation key gets pushed back into the input stream to be interpeted later as a command.
// Return status.
int bpop(Buffer *bufp,bool altmodeline,bool endprompt) {
Line *lnp1,*lnp,*lpmax;
int crow; // Current screen row number.
int disprows; // Total number of display rows.
int halfpage; // Rows in a half page.
int n; // Rows to move.
ushort ek; // Input extended key.
char *strp,*strpz; // Line text pointers.
char *hprompt = NULL; // Help prompt;
bool firstpass = true;
// Display special mode line if requested.
if(altmodeline) {
// Find last window on screen and rewrite its mode line.
wupd_modeline(wnextis(NULL),bufp);
}
// Set up and display a pop-up "window".
disprows = term.t_nrow - 2;
// Check if buffer will fit on one page and if not, set lpmax to first line of last page.
lpmax = NULL;
n = 0;
for(lnp = lforw(bufp->b_hdrlnp); lnp != bufp->b_hdrlnp; lnp = lforw(lnp)) {
if(++n > disprows) {
// Find beginning of last page.
lpmax = bufp->b_hdrlnp;
n = disprows;
do {
lpmax = lback(lpmax);
} while(--n > 0);
break;
}
}
// Begin at the beginning.
lnp1 = lforw(bufp->b_hdrlnp);
halfpage = disprows / 2;
n = 0;
// Display a page (beginning at line lnp1 + n) and prompt for a naviagtion command. Loop until exit key entered or
// endprompt is false and buffer fits on one page (lpmax is NULL).
for(;;) {
lnp = lnp1;
// Moving backward?
if(n < 0) {
do {
// At beginning of buffer?
if(lpmax == NULL || lnp1 == lforw(bufp->b_hdrlnp))
break;
// No, back up one line.
lnp1 = lback(lnp1);
} while(++n < 0);
}
// Moving forward?
else if(n > 0) {
do {
// At end of buffer or max line?
if(lpmax == NULL || lnp1 == bufp->b_hdrlnp || lnp1 == lpmax)
break;
// No, move forward one line.
lnp1 = lforw(lnp1);
} while(--n > 0);
}
// Illegal command?
if(n != 0 && lnp1 == lnp)
// Yes, ignore it.
n = 0;
else {
// Found first row ... display page.
lnp = lnp1;
crow = 0;
do {
// At end of buffer?
if(lnp == bufp->b_hdrlnp) {
// Yes, erase remaining lines on physical screen.
while(crow < disprows) {
vtmove(crow,0);
vteeol();
#if COLOR
vscreen[crow]->v_rfcolor = gfcolor;
vscreen[crow]->v_rbcolor = gbcolor;
#endif
vscreen[crow]->v_left = FARRIGHT;
vscreen[crow]->v_right = 0;
#if COLOR
vscreen[crow++]->v_flags |= VFCHGD | VFCOLOR;
#else
vscreen[crow++]->v_flags |= VFCHGD;
#endif
}
break;
}
// Update the virtual screen image for this line. Characters past right edge of screen won't be
// displayed, so ignore those.
vtmove(crow,0);
strpz = (strp = ltext(lnp)) + (lused(lnp) <= (int) term.t_ncol ? lused(lnp) : term.t_ncol);
while(strp < strpz)
vtputc(*strp++);
vteeol();
#if COLOR
vscreen[crow]->v_rfcolor = gfcolor;
vscreen[crow]->v_rbcolor = gbcolor;
#endif
vscreen[crow]->v_left = FARRIGHT;
vscreen[crow]->v_right = 0;
#if COLOR
vscreen[crow++]->v_flags |= VFCHGD | VFCOLOR;
#else
vscreen[crow++]->v_flags |= VFCHGD;
#endif
// On to the next line.
lnp = lforw(lnp);
} while(crow < disprows);
// Screen is full. Copy the virtual screen to the physical screen.
if(pupd_all(false) != SUCCESS)
return rc.status;
// Bail out if called from terminp() and one-page buffer.
if(firstpass && !endprompt && lpmax == NULL)
goto uexit;
firstpass = false;
}
// Display prompt.
mlputs(MLHOME | MLFORCE,hprompt != NULL ? hprompt : lpmax == NULL || lnp1 == lpmax ? text201 : ": ");
// "End: "
if(TTflush() != SUCCESS)
return rc.status;
// Get response.
for(;;) {
// Get a keystroke and decode it.
if(getkey(&ek) != SUCCESS)
return rc.status;
// Exit?
if(ek == (CTRL | '[') || ek == 'q')
goto uexit;
// Forward whole page?
if(ek == ' ' || ek == 'f' || iscmd(ek,forwPage)) {
n = disprows - overlap;
break;
}
// Forward half page?
if(ek == 'd') {
n = halfpage;
break;
}
// Backward whole page?
if(ek == 'b' || iscmd(ek,backPage)) {
n = overlap - disprows;
break;
}
// Backward half page?
if(ek == 'u') {
n = -halfpage;
break;
}
// Forward a line?
if(iscmd(ek,forwLine)) {
n = 1;
break;
}
// Backward a line?
if(iscmd(ek,backLine)) {
n = -1;
break;
}
// First page?
if(ek == 'g') {
if(lpmax == NULL || lnp1 == lforw(bufp->b_hdrlnp))
n = -1; // Force beep.
else {
lnp1 = lforw(bufp->b_hdrlnp);
n = 0;
}
break;
}
// Last page?
if(ek == 'G') {
if(lpmax == NULL || lnp1 == lpmax)
n = 1; // Force beep.
else {
lnp1 = lpmax;
n = 0;
}
break;
}
// Help?
if(ek == '?') {
StrList msg;
// Get string list...
if(vopen(&msg,NULL,false) != 0)
return vrcset();
// build prompt...
if(vputs(text202,&msg) != 0)
// "(<SPC>,f"
return vrcset();
if(hkey(&msg,forwPage,0) != SUCCESS)
return rc.status;
if(vputs(text203,&msg) != 0)
// ") +page (b"
return vrcset();
if(hkey(&msg,backPage,0) != SUCCESS)
return rc.status;
if(vputs(text204,&msg) != 0)
// ") -page (d) +half (u) -half"
return vrcset();
if(hkey(&msg,forwLine,'+') != SUCCESS || hkey(&msg,backLine,'-') != SUCCESS)
return rc.status;
if(vputs(text206,&msg) != 0)
// " (g) first (G) last (ESC,q) quit (?) help: "
return vrcset();
// and display it.
if(vclose(&msg) != 0)
return vrcset();
mlputs(MLHOME | MLFORCE,msg.sl_vp->v_strp);
}
else {
// Other key. "Unget" the key for reprocessing and return.
tungetc(ek);
goto uexit;
}
}
}
uexit:
uphard();
if(endprompt)
mlerase(MLFORCE);
return rc.status;
}
/*
* Create a subjob with a copy of the command intrepreter in it. When the
* command interpreter exits, mark the screen as garbage so that you do a full
* repaint. Bound to "^X C". The message at the start in VMS puts out a newline.
* Under some (unknown) condition, you don't get one free when DCL starts up.
*/
int spawncli(int f, int n)
{
#if V7 | USG | BSD
char *cp;
#endif
/* don't allow this command if restricted */
if (restflag)
return resterr();
#if WINNT
mlwrite("(unsupported)");
return FALSE;
#endif
#if VMS
movecursor(term.t_nrow, 0); /* In last line. */
mlputs("(Starting DCL)\r\n");
TTflush(); /* Ignore "ttcol". */
sgarbf = TRUE;
sys(NULL);
sleep(1);
mlputs("\r\n(Returning from DCL)\r\n");
TTflush();
sleep(1);
return TRUE;
#endif
#if MSDOS & (MSC | TURBO)
movecursor(term.t_nrow, 0); /* Seek to last line. */
TTflush();
TTkclose();
shellprog("");
TTkopen();
sgarbf = TRUE;
return TRUE;
#endif
#if V7 | USG | BSD
movecursor(term.t_nrow, 0); /* Seek to last line. */
TTflush();
TTclose(); /* stty to old settings */
TTkclose(); /* Close "keyboard" */
if ((cp = getenv("SHELL")) != NULL && *cp != '\0')
system(cp);
else
#if BSD
system("exec /bin/csh");
#else
system("exec /bin/sh");
#endif
sgarbf = TRUE;
sleep(2);
TTopen();
TTkopen();
#ifdef SIGWINCH
/*
* This fools the update routines to force a full
* redraw with complete window size checking.
* -lbt
*/
chg_width = term.t_ncol;
chg_height = term.t_nrow + 1;
term.t_nrow = term.t_ncol = 0;
#endif
return TRUE;
#endif
}
