/* ARGSUSED */
int
apropos_command(int f, int n)
{
struct buffer *bp;
struct list *fnames, *el;
char string[32];
if (eread("apropos: ", string, sizeof(string), EFNUL | EFNEW) == NULL)
return (ABORT);
/* FALSE means we got a 0 character string, which is fine */
bp = bfind("*help*", TRUE);
if (bclear(bp) == FALSE)
return (FALSE);
fnames = complete_function_list("");
for (el = fnames; el != NULL; el = el->l_next) {
char buf[32];
if (strstr(el->l_name, string) == NULL)
continue;
buf[0] = '\0';
findbind(fundamental_map, name_function(el->l_name),
buf, sizeof(buf));
if (addlinef(bp, "%-32s%s", el->l_name, buf) == FALSE) {
free_file_list(fnames);
return (FALSE);
}
}
free_file_list(fnames);
return (popbuftop(bp, WNONE));
}
/*
* Multiplex read, write on socket fd passed. Put output in outbp
* Poll on the fd for both read and write readiness.
*/
int
iomux(int fd, char* const text, int len, struct buffer *outbp)
{
struct pollfd pfd[1];
int nfds;
char *textcopy;
textcopy = text;
fcntl(fd, F_SETFL, O_NONBLOCK);
pfd[0].fd = fd;
/* There is nothing to write if len is zero
* but the cmd's output should be read so shutdown
* the socket for writing only and don't wait for POLLOUT
*/
if (len == 0) {
shutdown(fd, SHUT_WR);
pfd[0].events = POLLIN;
} else
pfd[0].events = POLLIN | POLLOUT;
while ((nfds = poll(pfd, 1, TIMEOUT)) != -1 ||
(pfd[0].revents & (POLLERR | POLLHUP | POLLNVAL))) {
if (pfd[0].revents & POLLOUT && len > 0)
pwriteout(fd, &textcopy, &len);
else if (pfd[0].revents & POLLIN)
if (preadin(fd, outbp) == FALSE)
break;
if (len == 0 && pfd[0].events & POLLOUT)
pfd[0].events = POLLIN;
}
close(fd);
/* In case if last line doesn't have a '\n' add the leftover
* characters to buffer.
*/
if (leftover[0] != '\0') {
addline(outbp, leftover);
leftover[0] = '\0';
}
if (nfds == 0) {
dobeep();
ewprintf("poll timed out");
return (FALSE);
} else if (nfds == -1) {
dobeep();
ewprintf("poll error");
return (FALSE);
}
return (popbuftop(outbp, WNONE));
}
/* ARGSUSED */
int
wallchart(int f, int n)
{
int m;
struct buffer *bp;
bp = bfind("*help*", TRUE);
if (bclear(bp) != TRUE)
/* clear it out */
return (FALSE);
bp->b_flag |= BFREADONLY;
for (m = curbp->b_nmodes; m > 0; m--) {
if ((addlinef(bp, "Local keybindings for mode %s:",
curbp->b_modes[m]->p_name) == FALSE) ||
(showall(bp, curbp->b_modes[m]->p_map, "") == FALSE) ||
(addline(bp, "") == FALSE))
return (FALSE);
}
if ((addline(bp, "Global bindings:") == FALSE) ||
(showall(bp, fundamental_map, "") == FALSE))
return (FALSE);
return (popbuftop(bp, WNONE));
}
/*
* Do completion on a list of objects, listing instead of completing.
*/
static int
complt_list(int flags, char *buf, int cpos)
{
struct list *lh, *lh2, *lh3;
struct list *wholelist = NULL;
struct buffer *bp;
int i, maxwidth, width;
int preflen = 0;
int oldrow = ttrow;
int oldcol = ttcol;
int oldhue = tthue;
char *linebuf;
size_t linesize, len;
char *cp;
lh = NULL;
ttflush();
/* The results are put into a completion buffer. */
bp = bfind("*Completions*", TRUE);
if (bclear(bp) == FALSE)
return (FALSE);
/*
* First get the list of objects. This list may contain only
* the ones that complete what has been typed, or may be the
* whole list of all objects of this type. They are filtered
* later in any case. Set wholelist if the list has been
* cons'ed up just for us, so we can free it later. We have
* to copy the buffer list for this function even though we
* didn't for complt. The sorting code does destructive
* changes to the list, which we don't want to happen to the
* main buffer list!
*/
if ((flags & EFBUF) != 0)
wholelist = lh = copy_list(&(bheadp->b_list));
else if ((flags & EFFUNC) != 0) {
buf[cpos] = '\0';
wholelist = lh = complete_function_list(buf);
} else if ((flags & EFFILE) != 0) {
buf[cpos] = '\0';
wholelist = lh = make_file_list(buf);
/*
* We don't want to display stuff up to the / for file
* names preflen is the list of a prefix of what the
* user typed that should not be displayed.
*/
cp = strrchr(buf, '/');
if (cp)
preflen = cp - buf + 1;
} else
panic("broken complt call: flags");
/*
* Sort the list, since users expect to see it in alphabetic
* order.
*/
lh2 = lh;
while (lh2 != NULL) {
lh3 = lh2->l_next;
while (lh3 != NULL) {
if (strcmp(lh2->l_name, lh3->l_name) > 0) {
cp = lh2->l_name;
lh2->l_name = lh3->l_name;
lh3->l_name = cp;
}
lh3 = lh3->l_next;
}
lh2 = lh2->l_next;
}
/*
* First find max width of object to be displayed, so we can
* put several on a line.
*/
maxwidth = 0;
lh2 = lh;
while (lh2 != NULL) {
for (i = 0; i < cpos; ++i) {
if (buf[i] != lh2->l_name[i])
break;
}
if (i == cpos) {
width = strlen(lh2->l_name);
if (width > maxwidth)
maxwidth = width;
}
lh2 = lh2->l_next;
}
maxwidth += 1 - preflen;
/*
* Now do the display. Objects are written into linebuf until
* it fills, and then put into the help buffer.
*/
linesize = MAX(ncol, maxwidth) + 1;
if ((linebuf = malloc(linesize)) == NULL) {
free_file_list(wholelist);
return (FALSE);
}
width = 0;
/*
* We're going to strlcat() into the buffer, so it has to be
* NUL terminated.
*/
linebuf[0] = '\0';
for (lh2 = lh; lh2 != NULL; lh2 = lh2->l_next) {
for (i = 0; i < cpos; ++i) {
if (buf[i] != lh2->l_name[i])
break;
}
/* if we have a match */
if (i == cpos) {
/* if it wraps */
if ((width + maxwidth) > ncol) {
addline(bp, linebuf);
linebuf[0] = '\0';
width = 0;
}
len = strlcat(linebuf, lh2->l_name + preflen,
linesize);
width += maxwidth;
if (len < width && width < linesize) {
/* pad so the objects nicely line up */
memset(linebuf + len, ' ',
maxwidth - strlen(lh2->l_name + preflen));
linebuf[width] = '\0';
}
}
}
if (width > 0)
addline(bp, linebuf);
free(linebuf);
/*
* Note that we free lists only if they are put in wholelist lists
* that were built just for us should be freed. However when we use
* the buffer list, obviously we don't want it freed.
*/
free_file_list(wholelist);
popbuftop(bp, WEPHEM); /* split the screen and put up the help
* buffer */
update(CMODE); /* needed to make the new stuff actually
* appear */
ttmove(oldrow, oldcol); /* update leaves cursor in arbitrary place */
ttcolor(oldhue); /* with arbitrary color */
ttflush();
return (0);
}
