3 * wmh.c -- window front-end to nmh
10 * Pass signals to client during execution
12 * Figure out a way for the user to say how big the Scan/Display
13 * windows should be, and where all the windows should be.
17 #include <h/signals.h>
28 #define ALARM ((unsigned int) 10)
29 #define PAUSE ((unsigned int) 2)
31 #define SZ(a) (sizeof a / sizeof a[0])
33 static struct swit switches[] = {
35 { "prompt string", 6 },
37 { "vmhproc program", 7 },
47 static int PEERpid = NOTOK;
49 static jmp_buf PEERctx;
53 static int dfd = NOTOK;
54 static int twd = NOTOK;
55 static char *myprompt = "(%s) ";
84 struct line *w_bottom;
86 char w_buffer[BUFSIZ];
92 static WINDOW *Status;
93 static WINDOW *Display;
94 static WINDOW *Command;
98 WINDOW *windows[NWIN + 1];
103 #ifdef HAVE_TERMIOS_H
104 static struct termios tio;
105 # define ERASE tio.c_cc[VERASE]
106 # define KILL tio.c_cc[VKILL]
107 # define INTR tio.c_cc[VINTR]
109 # ifdef HAVE_TERMIO_H
110 static struct termio tio;
111 # define ERASE tio.c_cc[VERASE]
112 # define KILL tio.c_cc[VKILL]
113 # define INTR tio.c_cc[VINTR]
115 static struct sgttyb tio;
116 static struct tchars tc;
117 # define ERASE tio.sg_erase
118 # define KILL tio.sg_kill
119 # define INTR tc.t_intrc
120 # define EOFC tc.t_eofc
124 #define WERASC ltc.t_werasc
125 static struct ltchars ltc;
129 int ALRMser (), PIPEser (), SIGser ();
130 int ADJser (), REFser ();
135 static void adorn(char *, char *, ...);
139 main (int argc, char **argv)
141 int vecp = 1, nprog = 0;
142 char *cp, buffer[BUFSIZ], **argp;
143 char **arguments, *vec[MAXARGS];
146 setlocale(LC_ALL, "");
148 invo_name = r1bindex (argv[0], '/');
150 /* read user profile/context */
153 arguments = getarguments (invo_name, argc,argv, 1);
156 while ((cp = *argp++))
158 switch (smatch (++cp, switches)) {
160 ambigsw (cp, switches);
167 snprintf (buffer, sizeof(buffer), "%s [switches for vmhproc]",
169 print_help (buffer, switches, 1);
172 print_version(invo_name);
176 if (!(myprompt = *argp++) || *myprompt == '-')
177 adios (NULL, "missing argument to %s", argp[-2]);
181 if (!(vmhproc = *argp++) || *vmhproc == '-')
182 adios (NULL, "missing argument to %s", argp[-2]);
192 if (WINinit (nprog) == NOTOK) {
195 vec[0] = r1bindex (vmhproc, '/');
196 execvp (vmhproc, vec);
197 adios (vmhproc, "unable to exec");
199 PEERinit (vecp, vec);
210 char buffer[BUFSIZ], prompt[BUFSIZ];
213 pLOOP (RC_QRY, NULL);
215 snprintf (prompt, sizeof(prompt), myprompt, invo_name);
217 switch (WINgetstr (Command, prompt, buffer)) {
222 done (0); /* NOTREACHED */
226 pLOOP (RC_CMD, buffer);
235 PEERinit (int vecp, char *vec[])
237 int pfd0[2], pfd1[2];
238 char buf1[BUFSIZ], buf2[BUFSIZ];
241 SIGNAL (SIGPIPE, PIPEser);
243 if (pipe (pfd0) == NOTOK || pipe (pfd1) == NOTOK)
244 adios ("pipe", "unable to");
245 switch (PEERpid = vfork ()) {
247 adios ("vfork", "unable to");/* NOTREACHED */
250 for (w = windows; *w; w++)
251 if ((*w)->w_fd != NOTOK)
256 vec[vecp++] = "-vmhread";
257 snprintf (buf1, sizeof(buf1), "%d", pfd1[0]);
259 vec[vecp++] = "-vmhwrite";
260 snprintf (buf2, sizeof(buf2), "%d", pfd0[1]);
264 SIGNAL (SIGINT, SIG_DFL);
265 SIGNAL (SIGQUIT, SIG_DFL);
266 SIGNAL (SIGTERM, SIG_DFL);
268 vec[0] = r1bindex (vmhproc, '/');
269 execvp (vmhproc, vec);
271 _exit (-1); /* NOTREACHED */
277 rcinit (pfd0[0], pfd1[1]);
287 char *bp, buffer[BUFSIZ];
288 struct record rcs, *rc;
294 /* Get buffer ready to go */
296 buflen = sizeof(buffer);
298 snprintf (bp, buflen, "%d %d", RC_VRSN, numwins);
303 for (w = windows; *w; w++) {
304 snprintf (bp, buflen, " %d", (*w)->w_height);
310 switch (str2rc (RC_INI, buffer, rc)) {
316 adios (NULL, "%s", rc->rc_data);
318 adios (NULL, "pINI peer error");
321 adios (NULL, "%s", rc->rc_data);
324 adios (NULL, "pINI protocol screw-up");
331 pLOOP (char code, char *str)
334 struct record rcs, *rc;
340 str2peer (code, str);
342 switch (peer2rc (rc)) {
344 if (pTTY () == NOTOK)
349 if (sscanf (rc->rc_data, "%d", &i) != 1
352 fmt2peer (RC_ERR, "no such window \"%s\"", rc->rc_data);
355 if ((w = windows[i - 1])->w_flags & W_CMND) {
356 fmt2peer (RC_ERR, "not a display window \"%s\"", rc->rc_data);
359 if (pWIN (w) == NOTOK)
368 adorn (NULL, "%s", rc->rc_data);
370 adorn (NULL, "pLOOP(%s) peer error",
371 code == RC_QRY ? "QRY" : "CMD");
376 adorn (NULL, "%s", rc->rc_data);
378 i = pidwait (PEERpid, OK);
383 adios (NULL, "%s", rc->rc_data);
386 adios (NULL, "pLOOP(%s) protocol screw-up",
387 code == RC_QRY ? "QRY" : "CMD");
395 SIGNAL_HANDLER hstat, istat, qstat, tstat;
396 struct record rcs, *rc;
401 if (ChangeWindowDepth (dfd, twd, 0) == NOTOK)
402 adios ("failed", "ChangeWindowDepth");
404 /* should block here instead of ignore */
405 hstat = SIGNAL (SIGHUP, SIG_IGN);
406 istat = SIGNAL (SIGINT, SIG_IGN);
407 qstat = SIGNAL (SIGQUIT, SIG_IGN);
408 tstat = SIGNAL (SIGTERM, SIG_IGN);
410 rc2rc (RC_ACK, 0, NULL, rc);
412 SIGNAL (SIGHUP, hstat);
413 SIGNAL (SIGINT, istat);
414 SIGNAL (SIGQUIT, qstat);
415 SIGNAL (SIGTERM, tstat);
417 switch (rc->rc_type) {
419 rc2peer (RC_ACK, 0, NULL);
424 adorn (NULL, "%s", rc->rc_data);
426 adorn (NULL, "pTTY peer error");
430 adios (NULL, "%s", rc->rc_data);
433 adios (NULL, "pTTY protocol screw-up");
444 if ((i = pWINaux (w)) == OK)
456 register struct line *lp, *mp;
457 struct record rcs, *rc;
462 for (lp = w->w_head; lp; lp = mp) {
467 w->w_head = w->w_top = w->w_bottom = w->w_tail = NULL;
471 switch (rc2rc (RC_ACK, 0, NULL, rc)) {
473 for (bp = rc->rc_data, n = rc->rc_len; n-- > 0; )
478 rc2peer (RC_ACK, 0, NULL);
485 adorn (NULL, "%s", rc->rc_data);
487 adorn (NULL, "pWIN peer error");
491 adios (NULL, "%s", rc->rc_data);
494 adios (NULL, "pWIN protocol screw-up");
508 rc2peer (RC_FIN, 0, NULL);
511 switch (setjmp (PEERctx)) {
513 SIGNAL (SIGALRM, ALRMser);
516 status = pidwait (PEERpid, OK);
522 kill (PEERpid, SIGKILL);
533 /* should dynamically determine all this stuff from gconfig... */
535 #define MyX 20 /* anchored hpos */
536 #define MyY 40 /* .. vpos */
537 #define MyW 800 /* .. width */
538 #define MyH 500 /* .. height */
539 #define MyS 30 /* .. height for Status, about one line */
542 #define MySlop 45 /* slop */
544 #define EWIDTH 25 /* Width of vertical EBAR */
545 #define ESLOP 5 /* .. slop */
548 static intWINinit (nprog) {
549 short wx, wy, wh, sy;
552 if (GetGraphicsConfig (fileno (stderr), &gc) == NOTOK)
556 adios (NULL, "not a window");
558 if ((dfd = open ("/dev/ttyw0", O_RDWR)) == NOTOK)
559 adios ("/dev/ttyw0", "unable to open");
561 if ((twd = GetTopWindow (dfd)) == NOTOK)
562 adios ("failed", "GetTopWindow");
564 BlockRefreshAdjust (1);
568 wx = gc.w - (MyX + MyW + EWIDTH + ESLOP);
569 Scan = WINnew (wx, wy = MyY, MyW, wh = MyH * 2 / 3, "Scan", W_EBAR);
572 Status = WINnew (wx, sy = wy, MyW, wh = MyS, "Status", W_FAKE);
575 Display = WINnew (wx, wy, MyW, MyH, "Display", W_EBAR);
577 Command = WINnew (wx, sy, MyW, MyS, invo_name, W_CMND);
579 windows[numwins] = NULL;
586 WINnew (short wx, short wy, short ww, short wh, char *name, int flags)
590 if ((w = (WINDOW *) calloc (1, sizeof *w)) == NULL)
591 adios (NULL, "unable to allocate window");
593 if ((w->w_flags = flags) & W_FAKE) {
600 if (w->w_flags & W_EBAR)
601 ww += EWIDTH + ESLOP;
603 wx += EWIDTH + ESLOP;
605 if ((w->w_fd = OpenWindow (wx, wy, ww, wh, name)) == NOTOK)
606 adios ("failed", "OpenWindow");
607 if ((w->w_wd = GetTopWindow (dfd)) == NOTOK)
608 adios ("failed", "GetTopWindow");
609 if (GetWindowState (w->w_fd, &w->w_ws) == NOTOK)
610 adios ("failed", "GetWindowState");
611 if (SetLineDisc (w->w_fd, TWSDISC) == NOTOK)
612 adios ("failed", "SetLineDisc");
614 SetBuf (w->w_fd, 1024);
615 SetAdjust (w->w_fd, numwins, ADJser);
616 SetRefresh (w->w_fd, numwins, REFser);
618 SetAddressing (w->w_fd, VT_ABSOLUTE);
620 if (w->w_flags & W_EBAR) {
621 w->w_eb = CreateElevatorBar (w->w_fd, 0, 0, EWIDTH,
622 w->w_ws.height, VT_Gray50, 1, EB_VERTICAL,
623 EB_ARROWS, w->w_ebloc = 0, w->w_ebsize = EB_MAX,
626 adios (NULL, "CreateElevatorBar failed");
627 RefreshElevatorBar (w->w_eb);
630 if ((w->w_cbase = CharacterBaseline (w->w_ws.font)) <= 0)
633 if ((w->w_cheight = CharacterHeight (w->w_ws.font)) <= 0)
635 w->w_height = w->w_ws.height / w->w_cheight;
640 if ((w->w_cwidth = CharacterWidth (w->w_ws.font, 'm')) <= 0)
642 w->w_width = (w->w_ws.width - (w->w_eb ? (EWIDTH + ESLOP) : 0))
648 windows[numwins++] = w;
655 WINgetstr (WINDOW *w, char *prompt, char *buffer)
658 register char *bp, *ip;
661 register struct vtseq *vt = &vts;
664 adios (NULL, "internal error--elevator bar found");
666 if (w->w_head == NULL
667 && (w->w_head = (struct line *) calloc (1, sizeof *w->w_head))
669 adios (NULL, "unable to allocate line storage");
670 w->w_head->l_buf = image;
671 w->w_top = w->w_bottom = w->w_tail = w->w_head;
673 if (ChangeWindowDepth (dfd, w->w_wd, 0) == NOTOK)
674 adios ("failed", "ChangeWindowDepth");
676 strncpy (image, prompt, sizeof(image));
677 bp = ip = image + strlen (image);
682 switch (getvtseq (w->w_fd, vt)) {
684 DisplayStatus (w->w_fd, "no hardkeys, please");
688 switch (c = toascii (vt->u.ascii)) {
689 case '\f': /* refresh? */
699 adorn (NULL, "Interrupt");
728 } while (isspace (*bp) && bp > ip);
732 } while (!isspace (*bp) && bp > buffer);
739 if (c < ' ' || c >= '\177')
749 switch (vt->u.mouse.buttons
750 & (VT_MOUSE_LEFT | VT_MOUSE_MIDDLE | VT_MOUSE_RIGHT)) {
752 DisplayStatus (w->w_fd, "use middle or right button");
755 #define WPOP "WMH\0Advance\0Burst\0Exit\0EOF\0"
756 case VT_MOUSE_MIDDLE:
757 SetPosition (w->w_fd, vt->u.mouse.x,
759 switch (DisplayPopUp (w->w_fd, WPOP)) {
760 case 1: /* Advance */
762 strcpy (buffer, "advance");
766 strcpy (buffer, "burst");
770 strcpy (buffer, "exit");
776 default: /* failed or none taken */
788 adios (NULL, "end-of-file on window");/* NOTREACHED */
791 DisplayStatus (w->w_fd, "unknown VT sequence");
798 WINputc (WINDOW *w, char c)
802 register struct line *lp;
807 if (WINputc (w, 'M') == NOTOK || WINputc (w, '-') == NOTOK)
812 if (c < ' ' || c == '\177') {
813 if (WINputc (w, '^') == NOTOK)
820 for (i = 8 - (w->w_bufpos & 0x07); i > 0; i--)
821 if (WINputc (w, ' ') == NOTOK)
835 w->w_buffer[w->w_bufpos++] = c;
839 w->w_buffer[w->w_bufpos] = NULL;
842 if ((lp = (struct line *) calloc (1, sizeof *lp)) == NULL)
843 adios (NULL, "unable to allocate line storage");
845 lp->l_no = (w->w_tail ? w->w_tail->l_no : 0) + 1;
846 lp->l_buf = getcpy (w->w_buffer);
847 for (cp = lp->l_buf + strlen (lp->l_buf) - 1; cp >= lp->l_buf; cp--)
853 if (w->w_head == NULL)
855 if (w->w_top == NULL)
857 if (w->w_bottom == NULL)
860 w->w_tail->l_next = lp;
861 lp->l_prev = w->w_tail;
870 static char mylineno[5];
872 static bool cancel[] = { 1 };
873 static struct choice mychoices[] = { LABEL, "cancel", VT_White };
875 static struct question myquestions[] = {
876 STRING, "Line", SZ (mylineno), (struct choice *) 0,
878 TOGGLE, "", SZ (mychoices), mychoices
881 static struct menu mymenu = { "Goto", SZ (myquestions), myquestions };
883 static int *myanswers[] = { (int *) mylineno, (int *) cancel };
889 int clear, pos, forw, refresh;
891 register struct vtseq *vt = &vts;
893 if (w->w_fd == NOTOK) {
895 DisplayStatus (dfd, w->w_top->l_buf);
902 if (ChangeWindowDepth (dfd, w->w_wd, 0) == NOTOK)
903 adios ("failed", "ChangeWindowDepth");
907 if (w->w_bottom == w->w_tail)
911 adios (NULL, "internal error--no elevator bar");
913 for (clear = refresh = 0, forw = 1;;) {
915 RemoveStatus (w->w_fd);
923 switch (getvtseq (w->w_fd, vt)) {
926 DisplayStatus (w->w_fd, "use the mouse");
931 switch (vt->u.mouse.buttons
932 & (VT_MOUSE_LEFT | VT_MOUSE_MIDDLE | VT_MOUSE_RIGHT)) {
934 if ((pos = vt->u.mouse.x) < EWIDTH) {
935 pos = w->w_ebloc = DoElevatorBar (w->w_eb, pos,
937 refresh = WINgoto (w, ((pos * (w->w_tail->l_no
939 / EB_MAX) + w->w_head->l_no);
943 #define WPOP "Paging\0Next\0Prev\0Left\0Right\0First\0Last\0Goto ...\0Exit\0"
944 case VT_MOUSE_MIDDLE:
945 SetPosition (w->w_fd, vt->u.mouse.x,
947 switch (DisplayPopUp (w->w_fd, WPOP)) {
950 if (w->w_bottom == w->w_tail)
952 refresh = WINgoto (w, w->w_bottom->l_no + 1 - PSLOP);
957 if (w->w_top == w->w_head)
959 refresh = WINgoto (w, w->w_top->l_no
960 - w->w_height + PSLOP);
965 DisplayStatus (w->w_fd, "not yet");
971 refresh = WINgoto (w, w->w_head->l_no);
976 refresh = WINgoto (w, w->w_tail->l_no
980 case 7: /* Goto ... */
981 snprintf (mylineno, sizeof(mylineno),
982 "%d", w->w_top->l_no);
984 if (PresentMenu (&mymenu, myanswers)
987 if (sscanf (mylineno, "%d", &pos) != 1) {
988 DisplayStatus (w->w_fd, "bad format");
992 if (pos < w->w_head->l_no
993 || pos > w->w_tail->l_no) {
994 DisplayStatus (w->w_fd, "no such line");
998 refresh = WINgoto (w, pos);
1004 default: /* failed or none taken */
1010 case VT_MOUSE_RIGHT:
1012 if (w->w_bottom == w->w_tail)
1023 adios (NULL, "end-of-file on window");/* NOTREACHED */
1026 DisplayStatus (w->w_fd, "unknown VT sequence");
1035 WINgoto (WINDOW *w, int n)
1038 register struct line *lp;
1040 if (n > (i = w->w_tail->l_no - w->w_height + 1))
1042 if (n < w->w_head->l_no)
1043 n = w->w_head->l_no;
1045 if ((i = n - (lp = w->w_head)->l_no)
1046 > (j = abs (n - w->w_top->l_no)))
1047 i = j, lp = w->w_top;
1049 if (i > (j = abs (w->w_tail->l_no - n)))
1050 i = j, lp = w->w_tail;
1052 if (n >= lp->l_no) {
1053 for (; lp; lp = lp->l_next)
1058 for (; lp; lp = lp->l_prev)
1075 ADJser (int id, short ww, short wh)
1079 if (id < 0 || id >= numwins)
1080 adios (NULL, "ADJser on bogus window (%d)", id);
1082 if (w->w_fd == NOTOK)
1083 adios (NULL, "ADJser on closed window (%d)", id);
1085 w->w_ws.width = w->w_ws.tw = ww;
1086 w->w_ws.height = w->w_ws.th = wh;
1089 DeleteElevatorBar (w->w_eb);
1090 w->w_eb = CreateElevatorBar (w->w_fd, 0, 0, EWIDTH,
1091 w->w_ws.height, VT_Gray50, 1, EB_VERTICAL,
1092 EB_ARROWS, w->w_ebloc = 0, w->w_ebsize = EB_MAX,
1094 if (w->w_eb == NULL)
1095 adios (NULL, "CreateElevatorBar failed");
1103 REFser (int id, short wx, short wy, short ww, short wh)
1105 short cx, cy, cw, ch;
1108 if (id < 0 || id >= numwins)
1109 adios (NULL, "REFser on bogus window (%d)", id);
1111 if (w->w_fd == NOTOK)
1112 adios (NULL, "REFser on closed window (%d)", id);
1115 if (GetWindowState (w->w_fd, &w->w_ws) == NOTOK)
1116 adios ("failed", "GetWindowState");
1118 GetPermanentClipping (w->w_fd, &cx, &cy, &cw, &ch);
1119 SetPermanentClipping (w->w_fd, wx, wy, ww, wh);
1121 SetPermanentClipping (w->w_fd, cx, cy, cw, ch);
1126 Redisplay (WINDOW *w, int doeb)
1130 register struct line *lp;
1132 if (w->w_fd == NOTOK)
1135 sx = w->w_eb ? (EWIDTH + ESLOP) : 0;
1136 w->w_height = w->w_ws.height / w->w_cheight;
1137 if (w->w_height < 1)
1140 w->w_width = (w->w_ws.width - (w->w_eb ? (EWIDTH + ESLOP) : 0))
1145 SetPosition (w->w_fd, sx, 0);
1146 SetColor (w->w_fd, VT_White);
1147 PaintRectangleInterior (w->w_fd, w->w_ws.width, w->w_ws.height);
1150 SetColor (w->w_fd, VT_Black);
1151 for (lp = w->w_top, y = 0;
1152 lp && y < w->w_height;
1153 w->w_bottom = lp, lp = lp->l_next, y++) {
1154 SetPosition (w->w_fd, sx, y * w->w_cheight + w->w_cbase);
1155 PaintString (w->w_fd, VT_STREND, lp->l_buf);
1160 if ((y = EB_LOC (w)) != w->w_ebloc)
1161 MoveElevator (w->w_eb, w->w_ebloc = y);
1162 if ((y = EB_SIZE (w)) != w->w_ebsize)
1163 SizeElevator (w->w_eb, w->w_ebsize = y);
1165 RefreshElevatorBar (w->w_eb);
1177 if (w->w_head == NULL)
1180 if ((i = w->w_tail->l_no - w->w_head->l_no) <= 0)
1183 return (((w->w_bottom->l_no - w->w_top->l_no) * EB_MAX) / i);
1192 if (w->w_head == NULL)
1195 if ((i = w->w_tail->l_no - w->w_head->l_no) <= 0)
1198 return (((w->w_top->l_no - w->w_head->l_no) * EB_MAX) / i);
1207 if (ioctl (fileno (stdin), TIOCGETP, (char *) &tio) == NOTOK)
1208 adios ("failed", "ioctl TIOCGETP");
1209 if (ioctl (fileno (stdin), TIOCGETC, (char *) &tc) == NOTOK)
1210 adios ("failed", "ioctl TIOCGETC");
1211 if (ioctl (fileno (stdin), TIOCGLTC, (char *) <c) == NOTOK)
1212 adios ("failed", "ioctl TIOCGLTC");
1215 SIGNAL (SIGHUP, SIGser);
1216 SIGNAL (SIGINT, SIGser);
1217 SIGNAL (SIGQUIT, SIGser);
1226 SIGNAL_HANDLER tstat;
1228 if ((pgrp = getpgrp (0)) == NOTOK)
1229 adios ("process group", "unable to determine");
1231 if (ioctl (fileno (stdin), TIOCGPGRP, (char *) &tpgrp) == NOTOK)
1232 adios ("tty's process group", "unable to determine");
1236 tstat = SIGNAL (SIGTTIN, SIG_DFL);
1238 SIGNAL (SIGTTIN, tstat);
1241 SIGNAL (SIGTTIN, SIG_IGN);
1242 SIGNAL (SIGTTOU, SIG_IGN);
1243 SIGNAL (SIGTSTP, SIG_IGN);
1252 SIGNAL (SIGTTIN, SIG_DFL);
1253 SIGNAL (SIGTTOU, SIG_DFL);
1254 SIGNAL (SIGTSTP, SIG_DFL);
1262 longjmp (PEERctx, DONE);
1269 #ifndef RELIABLE_SIGNALS
1270 SIGNAL (sig, SIG_IGN);
1273 adios (NULL, "lost peer");
1280 #ifndef RELIABLE_SIGNALS
1281 SIGNAL (sig, SIG_IGN);
1301 adorn (char *what, char *fmt, ...)
1310 advertise (what, NULL, fmt, ap);
1318 advertise (char *what, char *tail, va_list ap)
1321 char buffer[BUFSIZ], err[BUFSIZ];
1322 struct iovec iob[20];
1323 register struct iovec *iov = iob;
1329 iov->iov_len = strlen (iov->iov_base = invo_name);
1331 iov->iov_len = strlen (iov->iov_base = ": ");
1335 vsnprintf (buffer, sizeof(buffer), fmt, ap);
1336 iov->iov_len = strlen (iov->iov_base = buffer);
1340 iov->iov_len = strlen (iov->iov_base = " ");
1342 iov->iov_len = strlen (iov->iov_base = what);
1344 iov->iov_len = strlen (iov->iov_base = ": ");
1347 if (!(iov->iov_base = strerror (eindex))) {
1348 snprintf (err, sizeof(err), "unknown error %d", eindex);
1349 iov->iov_base = err;
1351 iov->iov_len = strlen (iov->iov_base);
1354 if (tail && *tail) {
1355 iov->iov_len = strlen (iov->iov_base = ", ");
1357 iov->iov_len = strlen (iov->iov_base = tail);
1360 iov->iov_len = strlen (iov->iov_base = "\n");
1364 DisplayVector (iob, iov - iob);
1366 writev (fileno (stderr), iob, iov - iob);
1371 DisplayVector (struct iovec *iov, int n)
1375 char buffer[BUFSIZ];
1377 for (i = 0, cp = NULL; i < n; i++, iov++) {
1378 snprintf (buffer, sizeof(buffer), "%*.*s", iov->iov_len,
1379 iov->iov_len, iov->iov_base);
1380 cp = add (buffer, cp);
1383 DisplayStatus (dfd, cp);