3 * wmh.c -- window front-end to nmh
5 * This code is Copyright (c) 2002, by the authors of nmh. See the
6 * COPYRIGHT file in the root directory of the nmh distribution for
7 * complete copyright information.
12 * Pass signals to client during execution
14 * Figure out a way for the user to say how big the Scan/Display
15 * windows should be, and where all the windows should be.
19 #include <h/signals.h>
30 #define ALARM ((unsigned int) 10)
31 #define PAUSE ((unsigned int) 2)
33 #define SZ(a) (sizeof a / sizeof a[0])
35 static struct swit switches[] = {
37 { "prompt string", 6 },
39 { "vmhproc program", 7 },
49 static int PEERpid = NOTOK;
51 static jmp_buf PEERctx;
55 static int dfd = NOTOK;
56 static int twd = NOTOK;
57 static char *myprompt = "(%s) ";
86 struct line *w_bottom;
88 char w_buffer[BUFSIZ];
94 static WINDOW *Status;
95 static WINDOW *Display;
96 static WINDOW *Command;
100 WINDOW *windows[NWIN + 1];
105 #ifdef HAVE_TERMIOS_H
106 static struct termios tio;
107 # define ERASE tio.c_cc[VERASE]
108 # define KILL tio.c_cc[VKILL]
109 # define INTR tio.c_cc[VINTR]
111 # ifdef HAVE_TERMIO_H
112 static struct termio tio;
113 # define ERASE tio.c_cc[VERASE]
114 # define KILL tio.c_cc[VKILL]
115 # define INTR tio.c_cc[VINTR]
117 static struct sgttyb tio;
118 static struct tchars tc;
119 # define ERASE tio.sg_erase
120 # define KILL tio.sg_kill
121 # define INTR tc.t_intrc
122 # define EOFC tc.t_eofc
126 #define WERASC ltc.t_werasc
127 static struct ltchars ltc;
130 int ALRMser (), PIPEser (), SIGser ();
131 int ADJser (), REFser ();
136 static void adorn(char *, char *, ...);
140 main (int argc, char **argv)
142 int vecp = 1, nprog = 0;
143 char *cp, buffer[BUFSIZ], **argp;
144 char **arguments, *vec[MAXARGS];
147 setlocale(LC_ALL, "");
149 invo_name = r1bindex (argv[0], '/');
151 /* read user profile/context */
154 arguments = getarguments (invo_name, argc,argv, 1);
157 while ((cp = *argp++))
159 switch (smatch (++cp, switches)) {
161 ambigsw (cp, switches);
168 snprintf (buffer, sizeof(buffer), "%s [switches for vmhproc]",
170 print_help (buffer, switches, 1);
173 print_version(invo_name);
177 if (!(myprompt = *argp++) || *myprompt == '-')
178 adios (NULL, "missing argument to %s", argp[-2]);
182 if (!(vmhproc = *argp++) || *vmhproc == '-')
183 adios (NULL, "missing argument to %s", argp[-2]);
193 if (WINinit (nprog) == NOTOK) {
196 vec[0] = r1bindex (vmhproc, '/');
197 execvp (vmhproc, vec);
198 adios (vmhproc, "unable to exec");
200 PEERinit (vecp, vec);
211 char buffer[BUFSIZ], prompt[BUFSIZ];
214 pLOOP (RC_QRY, NULL);
216 snprintf (prompt, sizeof(prompt), myprompt, invo_name);
218 switch (WINgetstr (Command, prompt, buffer)) {
223 done (0); /* NOTREACHED */
227 pLOOP (RC_CMD, buffer);
236 PEERinit (int vecp, char *vec[])
238 int pfd0[2], pfd1[2];
239 char buf1[BUFSIZ], buf2[BUFSIZ];
242 SIGNAL (SIGPIPE, PIPEser);
244 if (pipe (pfd0) == NOTOK || pipe (pfd1) == NOTOK)
245 adios ("pipe", "unable to");
246 switch (PEERpid = vfork ()) {
248 adios ("vfork", "unable to");/* NOTREACHED */
251 for (w = windows; *w; w++)
252 if ((*w)->w_fd != NOTOK)
257 vec[vecp++] = "-vmhread";
258 snprintf (buf1, sizeof(buf1), "%d", pfd1[0]);
260 vec[vecp++] = "-vmhwrite";
261 snprintf (buf2, sizeof(buf2), "%d", pfd0[1]);
265 SIGNAL (SIGINT, SIG_DFL);
266 SIGNAL (SIGQUIT, SIG_DFL);
267 SIGNAL (SIGTERM, SIG_DFL);
269 vec[0] = r1bindex (vmhproc, '/');
270 execvp (vmhproc, vec);
272 _exit (-1); /* NOTREACHED */
278 rcinit (pfd0[0], pfd1[1]);
288 char *bp, buffer[BUFSIZ];
289 struct record rcs, *rc;
295 /* Get buffer ready to go */
297 buflen = sizeof(buffer);
299 snprintf (bp, buflen, "%d %d", RC_VRSN, numwins);
304 for (w = windows; *w; w++) {
305 snprintf (bp, buflen, " %d", (*w)->w_height);
311 switch (str2rc (RC_INI, buffer, rc)) {
317 adios (NULL, "%s", rc->rc_data);
319 adios (NULL, "pINI peer error");
322 adios (NULL, "%s", rc->rc_data);
325 adios (NULL, "pINI protocol screw-up");
332 pLOOP (char code, char *str)
335 struct record rcs, *rc;
341 str2peer (code, str);
343 switch (peer2rc (rc)) {
345 if (pTTY () == NOTOK)
350 if (sscanf (rc->rc_data, "%d", &i) != 1
353 fmt2peer (RC_ERR, "no such window \"%s\"", rc->rc_data);
356 if ((w = windows[i - 1])->w_flags & W_CMND) {
357 fmt2peer (RC_ERR, "not a display window \"%s\"", rc->rc_data);
360 if (pWIN (w) == NOTOK)
369 adorn (NULL, "%s", rc->rc_data);
371 adorn (NULL, "pLOOP(%s) peer error",
372 code == RC_QRY ? "QRY" : "CMD");
377 adorn (NULL, "%s", rc->rc_data);
379 i = pidwait (PEERpid, OK);
384 adios (NULL, "%s", rc->rc_data);
387 adios (NULL, "pLOOP(%s) protocol screw-up",
388 code == RC_QRY ? "QRY" : "CMD");
396 SIGNAL_HANDLER hstat, istat, qstat, tstat;
397 struct record rcs, *rc;
402 if (ChangeWindowDepth (dfd, twd, 0) == NOTOK)
403 adios ("failed", "ChangeWindowDepth");
405 /* should block here instead of ignore */
406 hstat = SIGNAL (SIGHUP, SIG_IGN);
407 istat = SIGNAL (SIGINT, SIG_IGN);
408 qstat = SIGNAL (SIGQUIT, SIG_IGN);
409 tstat = SIGNAL (SIGTERM, SIG_IGN);
411 rc2rc (RC_ACK, 0, NULL, rc);
413 SIGNAL (SIGHUP, hstat);
414 SIGNAL (SIGINT, istat);
415 SIGNAL (SIGQUIT, qstat);
416 SIGNAL (SIGTERM, tstat);
418 switch (rc->rc_type) {
420 rc2peer (RC_ACK, 0, NULL);
425 adorn (NULL, "%s", rc->rc_data);
427 adorn (NULL, "pTTY peer error");
431 adios (NULL, "%s", rc->rc_data);
434 adios (NULL, "pTTY protocol screw-up");
445 if ((i = pWINaux (w)) == OK)
457 register struct line *lp, *mp;
458 struct record rcs, *rc;
463 for (lp = w->w_head; lp; lp = mp) {
468 w->w_head = w->w_top = w->w_bottom = w->w_tail = NULL;
472 switch (rc2rc (RC_ACK, 0, NULL, rc)) {
474 for (bp = rc->rc_data, n = rc->rc_len; n-- > 0; )
479 rc2peer (RC_ACK, 0, NULL);
486 adorn (NULL, "%s", rc->rc_data);
488 adorn (NULL, "pWIN peer error");
492 adios (NULL, "%s", rc->rc_data);
495 adios (NULL, "pWIN protocol screw-up");
509 rc2peer (RC_FIN, 0, NULL);
512 switch (setjmp (PEERctx)) {
514 SIGNAL (SIGALRM, ALRMser);
517 status = pidwait (PEERpid, OK);
523 kill (PEERpid, SIGKILL);
534 /* should dynamically determine all this stuff from gconfig... */
536 #define MyX 20 /* anchored hpos */
537 #define MyY 40 /* .. vpos */
538 #define MyW 800 /* .. width */
539 #define MyH 500 /* .. height */
540 #define MyS 30 /* .. height for Status, about one line */
543 #define MySlop 45 /* slop */
545 #define EWIDTH 25 /* Width of vertical EBAR */
546 #define ESLOP 5 /* .. slop */
549 static intWINinit (nprog) {
550 short wx, wy, wh, sy;
553 if (GetGraphicsConfig (fileno (stderr), &gc) == NOTOK)
557 adios (NULL, "not a window");
559 if ((dfd = open ("/dev/ttyw0", O_RDWR)) == NOTOK)
560 adios ("/dev/ttyw0", "unable to open");
562 if ((twd = GetTopWindow (dfd)) == NOTOK)
563 adios ("failed", "GetTopWindow");
565 BlockRefreshAdjust (1);
569 wx = gc.w - (MyX + MyW + EWIDTH + ESLOP);
570 Scan = WINnew (wx, wy = MyY, MyW, wh = MyH * 2 / 3, "Scan", W_EBAR);
573 Status = WINnew (wx, sy = wy, MyW, wh = MyS, "Status", W_FAKE);
576 Display = WINnew (wx, wy, MyW, MyH, "Display", W_EBAR);
578 Command = WINnew (wx, sy, MyW, MyS, invo_name, W_CMND);
580 windows[numwins] = NULL;
587 WINnew (short wx, short wy, short ww, short wh, char *name, int flags)
591 if ((w = (WINDOW *) calloc (1, sizeof *w)) == NULL)
592 adios (NULL, "unable to allocate window");
594 if ((w->w_flags = flags) & W_FAKE) {
601 if (w->w_flags & W_EBAR)
602 ww += EWIDTH + ESLOP;
604 wx += EWIDTH + ESLOP;
606 if ((w->w_fd = OpenWindow (wx, wy, ww, wh, name)) == NOTOK)
607 adios ("failed", "OpenWindow");
608 if ((w->w_wd = GetTopWindow (dfd)) == NOTOK)
609 adios ("failed", "GetTopWindow");
610 if (GetWindowState (w->w_fd, &w->w_ws) == NOTOK)
611 adios ("failed", "GetWindowState");
612 if (SetLineDisc (w->w_fd, TWSDISC) == NOTOK)
613 adios ("failed", "SetLineDisc");
615 SetBuf (w->w_fd, 1024);
616 SetAdjust (w->w_fd, numwins, ADJser);
617 SetRefresh (w->w_fd, numwins, REFser);
619 SetAddressing (w->w_fd, VT_ABSOLUTE);
621 if (w->w_flags & W_EBAR) {
622 w->w_eb = CreateElevatorBar (w->w_fd, 0, 0, EWIDTH,
623 w->w_ws.height, VT_Gray50, 1, EB_VERTICAL,
624 EB_ARROWS, w->w_ebloc = 0, w->w_ebsize = EB_MAX,
627 adios (NULL, "CreateElevatorBar failed");
628 RefreshElevatorBar (w->w_eb);
631 if ((w->w_cbase = CharacterBaseline (w->w_ws.font)) <= 0)
634 if ((w->w_cheight = CharacterHeight (w->w_ws.font)) <= 0)
636 w->w_height = w->w_ws.height / w->w_cheight;
641 if ((w->w_cwidth = CharacterWidth (w->w_ws.font, 'm')) <= 0)
643 w->w_width = (w->w_ws.width - (w->w_eb ? (EWIDTH + ESLOP) : 0))
649 windows[numwins++] = w;
656 WINgetstr (WINDOW *w, char *prompt, char *buffer)
659 register char *bp, *ip;
662 register struct vtseq *vt = &vts;
665 adios (NULL, "internal error--elevator bar found");
667 if (w->w_head == NULL
668 && (w->w_head = (struct line *) calloc (1, sizeof *w->w_head))
670 adios (NULL, "unable to allocate line storage");
671 w->w_head->l_buf = image;
672 w->w_top = w->w_bottom = w->w_tail = w->w_head;
674 if (ChangeWindowDepth (dfd, w->w_wd, 0) == NOTOK)
675 adios ("failed", "ChangeWindowDepth");
677 strncpy (image, prompt, sizeof(image));
678 bp = ip = image + strlen (image);
683 switch (getvtseq (w->w_fd, vt)) {
685 DisplayStatus (w->w_fd, "no hardkeys, please");
689 switch (c = toascii (vt->u.ascii)) {
690 case '\f': /* refresh? */
700 adorn (NULL, "Interrupt");
729 } while (isspace (*bp) && bp > ip);
733 } while (!isspace (*bp) && bp > buffer);
740 if (c < ' ' || c >= '\177')
750 switch (vt->u.mouse.buttons
751 & (VT_MOUSE_LEFT | VT_MOUSE_MIDDLE | VT_MOUSE_RIGHT)) {
753 DisplayStatus (w->w_fd, "use middle or right button");
756 #define WPOP "WMH\0Advance\0Burst\0Exit\0EOF\0"
757 case VT_MOUSE_MIDDLE:
758 SetPosition (w->w_fd, vt->u.mouse.x,
760 switch (DisplayPopUp (w->w_fd, WPOP)) {
761 case 1: /* Advance */
763 strcpy (buffer, "advance");
767 strcpy (buffer, "burst");
771 strcpy (buffer, "exit");
777 default: /* failed or none taken */
789 adios (NULL, "end-of-file on window");/* NOTREACHED */
792 DisplayStatus (w->w_fd, "unknown VT sequence");
799 WINputc (WINDOW *w, char c)
803 register struct line *lp;
808 if (WINputc (w, 'M') == NOTOK || WINputc (w, '-') == NOTOK)
813 if (c < ' ' || c == '\177') {
814 if (WINputc (w, '^') == NOTOK)
821 for (i = 8 - (w->w_bufpos & 0x07); i > 0; i--)
822 if (WINputc (w, ' ') == NOTOK)
836 w->w_buffer[w->w_bufpos++] = c;
840 w->w_buffer[w->w_bufpos] = NULL;
843 if ((lp = (struct line *) calloc (1, sizeof *lp)) == NULL)
844 adios (NULL, "unable to allocate line storage");
846 lp->l_no = (w->w_tail ? w->w_tail->l_no : 0) + 1;
847 lp->l_buf = getcpy (w->w_buffer);
848 for (cp = lp->l_buf + strlen (lp->l_buf) - 1; cp >= lp->l_buf; cp--)
854 if (w->w_head == NULL)
856 if (w->w_top == NULL)
858 if (w->w_bottom == NULL)
861 w->w_tail->l_next = lp;
862 lp->l_prev = w->w_tail;
871 static char mylineno[5];
873 static bool cancel[] = { 1 };
874 static struct choice mychoices[] = { LABEL, "cancel", VT_White };
876 static struct question myquestions[] = {
877 STRING, "Line", SZ (mylineno), (struct choice *) 0,
879 TOGGLE, "", SZ (mychoices), mychoices
882 static struct menu mymenu = { "Goto", SZ (myquestions), myquestions };
884 static int *myanswers[] = { (int *) mylineno, (int *) cancel };
890 int clear, pos, forw, refresh;
892 register struct vtseq *vt = &vts;
894 if (w->w_fd == NOTOK) {
896 DisplayStatus (dfd, w->w_top->l_buf);
903 if (ChangeWindowDepth (dfd, w->w_wd, 0) == NOTOK)
904 adios ("failed", "ChangeWindowDepth");
908 if (w->w_bottom == w->w_tail)
912 adios (NULL, "internal error--no elevator bar");
914 for (clear = refresh = 0, forw = 1;;) {
916 RemoveStatus (w->w_fd);
924 switch (getvtseq (w->w_fd, vt)) {
927 DisplayStatus (w->w_fd, "use the mouse");
932 switch (vt->u.mouse.buttons
933 & (VT_MOUSE_LEFT | VT_MOUSE_MIDDLE | VT_MOUSE_RIGHT)) {
935 if ((pos = vt->u.mouse.x) < EWIDTH) {
936 pos = w->w_ebloc = DoElevatorBar (w->w_eb, pos,
938 refresh = WINgoto (w, ((pos * (w->w_tail->l_no
940 / EB_MAX) + w->w_head->l_no);
944 #define WPOP "Paging\0Next\0Prev\0Left\0Right\0First\0Last\0Goto ...\0Exit\0"
945 case VT_MOUSE_MIDDLE:
946 SetPosition (w->w_fd, vt->u.mouse.x,
948 switch (DisplayPopUp (w->w_fd, WPOP)) {
951 if (w->w_bottom == w->w_tail)
953 refresh = WINgoto (w, w->w_bottom->l_no + 1 - PSLOP);
958 if (w->w_top == w->w_head)
960 refresh = WINgoto (w, w->w_top->l_no
961 - w->w_height + PSLOP);
966 DisplayStatus (w->w_fd, "not yet");
972 refresh = WINgoto (w, w->w_head->l_no);
977 refresh = WINgoto (w, w->w_tail->l_no
981 case 7: /* Goto ... */
982 snprintf (mylineno, sizeof(mylineno),
983 "%d", w->w_top->l_no);
985 if (PresentMenu (&mymenu, myanswers)
988 if (sscanf (mylineno, "%d", &pos) != 1) {
989 DisplayStatus (w->w_fd, "bad format");
993 if (pos < w->w_head->l_no
994 || pos > w->w_tail->l_no) {
995 DisplayStatus (w->w_fd, "no such line");
999 refresh = WINgoto (w, pos);
1005 default: /* failed or none taken */
1011 case VT_MOUSE_RIGHT:
1013 if (w->w_bottom == w->w_tail)
1024 adios (NULL, "end-of-file on window");/* NOTREACHED */
1027 DisplayStatus (w->w_fd, "unknown VT sequence");
1036 WINgoto (WINDOW *w, int n)
1039 register struct line *lp;
1041 if (n > (i = w->w_tail->l_no - w->w_height + 1))
1043 if (n < w->w_head->l_no)
1044 n = w->w_head->l_no;
1046 if ((i = n - (lp = w->w_head)->l_no)
1047 > (j = abs (n - w->w_top->l_no)))
1048 i = j, lp = w->w_top;
1050 if (i > (j = abs (w->w_tail->l_no - n)))
1051 i = j, lp = w->w_tail;
1053 if (n >= lp->l_no) {
1054 for (; lp; lp = lp->l_next)
1059 for (; lp; lp = lp->l_prev)
1076 ADJser (int id, short ww, short wh)
1080 if (id < 0 || id >= numwins)
1081 adios (NULL, "ADJser on bogus window (%d)", id);
1083 if (w->w_fd == NOTOK)
1084 adios (NULL, "ADJser on closed window (%d)", id);
1086 w->w_ws.width = w->w_ws.tw = ww;
1087 w->w_ws.height = w->w_ws.th = wh;
1090 DeleteElevatorBar (w->w_eb);
1091 w->w_eb = CreateElevatorBar (w->w_fd, 0, 0, EWIDTH,
1092 w->w_ws.height, VT_Gray50, 1, EB_VERTICAL,
1093 EB_ARROWS, w->w_ebloc = 0, w->w_ebsize = EB_MAX,
1095 if (w->w_eb == NULL)
1096 adios (NULL, "CreateElevatorBar failed");
1104 REFser (int id, short wx, short wy, short ww, short wh)
1106 short cx, cy, cw, ch;
1109 if (id < 0 || id >= numwins)
1110 adios (NULL, "REFser on bogus window (%d)", id);
1112 if (w->w_fd == NOTOK)
1113 adios (NULL, "REFser on closed window (%d)", id);
1116 if (GetWindowState (w->w_fd, &w->w_ws) == NOTOK)
1117 adios ("failed", "GetWindowState");
1119 GetPermanentClipping (w->w_fd, &cx, &cy, &cw, &ch);
1120 SetPermanentClipping (w->w_fd, wx, wy, ww, wh);
1122 SetPermanentClipping (w->w_fd, cx, cy, cw, ch);
1127 Redisplay (WINDOW *w, int doeb)
1131 register struct line *lp;
1133 if (w->w_fd == NOTOK)
1136 sx = w->w_eb ? (EWIDTH + ESLOP) : 0;
1137 w->w_height = w->w_ws.height / w->w_cheight;
1138 if (w->w_height < 1)
1141 w->w_width = (w->w_ws.width - (w->w_eb ? (EWIDTH + ESLOP) : 0))
1146 SetPosition (w->w_fd, sx, 0);
1147 SetColor (w->w_fd, VT_White);
1148 PaintRectangleInterior (w->w_fd, w->w_ws.width, w->w_ws.height);
1151 SetColor (w->w_fd, VT_Black);
1152 for (lp = w->w_top, y = 0;
1153 lp && y < w->w_height;
1154 w->w_bottom = lp, lp = lp->l_next, y++) {
1155 SetPosition (w->w_fd, sx, y * w->w_cheight + w->w_cbase);
1156 PaintString (w->w_fd, VT_STREND, lp->l_buf);
1161 if ((y = EB_LOC (w)) != w->w_ebloc)
1162 MoveElevator (w->w_eb, w->w_ebloc = y);
1163 if ((y = EB_SIZE (w)) != w->w_ebsize)
1164 SizeElevator (w->w_eb, w->w_ebsize = y);
1166 RefreshElevatorBar (w->w_eb);
1178 if (w->w_head == NULL)
1181 if ((i = w->w_tail->l_no - w->w_head->l_no) <= 0)
1184 return (((w->w_bottom->l_no - w->w_top->l_no) * EB_MAX) / i);
1193 if (w->w_head == NULL)
1196 if ((i = w->w_tail->l_no - w->w_head->l_no) <= 0)
1199 return (((w->w_top->l_no - w->w_head->l_no) * EB_MAX) / i);
1208 if (ioctl (fileno (stdin), TIOCGETP, (char *) &tio) == NOTOK)
1209 adios ("failed", "ioctl TIOCGETP");
1210 if (ioctl (fileno (stdin), TIOCGETC, (char *) &tc) == NOTOK)
1211 adios ("failed", "ioctl TIOCGETC");
1212 if (ioctl (fileno (stdin), TIOCGLTC, (char *) <c) == NOTOK)
1213 adios ("failed", "ioctl TIOCGLTC");
1216 SIGNAL (SIGHUP, SIGser);
1217 SIGNAL (SIGINT, SIGser);
1218 SIGNAL (SIGQUIT, SIGser);
1227 SIGNAL_HANDLER tstat;
1229 if ((pgrp = getpgrp (0)) == NOTOK)
1230 adios ("process group", "unable to determine");
1232 if (ioctl (fileno (stdin), TIOCGPGRP, (char *) &tpgrp) == NOTOK)
1233 adios ("tty's process group", "unable to determine");
1237 tstat = SIGNAL (SIGTTIN, SIG_DFL);
1239 SIGNAL (SIGTTIN, tstat);
1242 SIGNAL (SIGTTIN, SIG_IGN);
1243 SIGNAL (SIGTTOU, SIG_IGN);
1244 SIGNAL (SIGTSTP, SIG_IGN);
1253 SIGNAL (SIGTTIN, SIG_DFL);
1254 SIGNAL (SIGTTOU, SIG_DFL);
1255 SIGNAL (SIGTSTP, SIG_DFL);
1263 longjmp (PEERctx, DONE);
1270 #ifndef RELIABLE_SIGNALS
1271 SIGNAL (sig, SIG_IGN);
1274 adios (NULL, "lost peer");
1281 #ifndef RELIABLE_SIGNALS
1282 SIGNAL (sig, SIG_IGN);
1298 return 1; /* dead code to satisfy the compiler */
1303 adorn (char *what, char *fmt, ...)
1312 advertise (what, NULL, fmt, ap);
1320 advertise (char *what, char *tail, va_list ap)
1323 char buffer[BUFSIZ], err[BUFSIZ];
1324 struct iovec iob[20];
1325 register struct iovec *iov = iob;
1331 iov->iov_len = strlen (iov->iov_base = invo_name);
1333 iov->iov_len = strlen (iov->iov_base = ": ");
1337 vsnprintf (buffer, sizeof(buffer), fmt, ap);
1338 iov->iov_len = strlen (iov->iov_base = buffer);
1342 iov->iov_len = strlen (iov->iov_base = " ");
1344 iov->iov_len = strlen (iov->iov_base = what);
1346 iov->iov_len = strlen (iov->iov_base = ": ");
1349 if (!(iov->iov_base = strerror (eindex))) {
1350 snprintf (err, sizeof(err), "unknown error %d", eindex);
1351 iov->iov_base = err;
1353 iov->iov_len = strlen (iov->iov_base);
1356 if (tail && *tail) {
1357 iov->iov_len = strlen (iov->iov_base = ", ");
1359 iov->iov_len = strlen (iov->iov_base = tail);
1362 iov->iov_len = strlen (iov->iov_base = "\n");
1366 DisplayVector (iob, iov - iob);
1368 writev (fileno (stderr), iob, iov - iob);
1373 DisplayVector (struct iovec *iov, int n)
1377 char buffer[BUFSIZ];
1379 for (i = 0, cp = NULL; i < n; i++, iov++) {
1380 snprintf (buffer, sizeof(buffer), "%*.*s", iov->iov_len,
1381 iov->iov_len, iov->iov_base);
1382 cp = add (buffer, cp);
1385 DisplayStatus (dfd, cp);