1 /* $Header: /src/pub/tcsh/sh.lex.c,v 3.56 2002/07/08 20:57:32 christos Exp $ */
3 * sh.lex.c: Lexical analysis into tokens
6 * Copyright (c) 1980, 1991 The Regents of the University of California.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 RCSID("$Id: sh.lex.c,v 3.56 2002/07/08 20:57:32 christos Exp $")
38 /* #define DEBUG_INP */
39 /* #define DEBUG_SEEK */
46 * These lexical routines read input and form lists of words.
47 * There is some involved processing here, because of the complications
48 * of input buffering, and especially because of history substitution.
50 static Char *word __P((void));
51 static int getC1 __P((int));
52 static void getdol __P((void));
53 static void getexcl __P((int));
54 static struct Hist *findev __P((Char *, bool));
55 static void setexclp __P((Char *));
56 static int bgetc __P((void));
57 static void balloc __P((int));
58 static void bfree __P((void));
59 static struct wordent *gethent __P((int));
60 static int matchs __P((Char *, Char *));
61 static int getsel __P((int *, int *, int));
62 static struct wordent *getsub __P((struct wordent *));
63 static Char *subword __P((Char *, int, bool *));
64 static struct wordent *dosub __P((int, struct wordent *, bool));
67 * Peekc is a peek character for getC, peekread for readc.
68 * There is a subtlety here in many places... history routines
69 * will read ahead and then insert stuff into the input stream.
70 * If they push back a character then they must push it behind
71 * the text substituted by the history substitution. On the other
72 * hand in several places we need 2 peek characters. To make this
73 * all work, the history routines read with getC, and make use both
74 * of ungetC and unreadc. The key observation is that the state
75 * of getC at the call of a history reference is such that calls
76 * to getC from the history routines will always yield calls of
77 * readc, unless this peeking is involved. That is to say that during
78 * getexcl the variables lap, exclp, and exclnxt are all zero.
80 * Getdol invokes history substitution, hence the extra peek, peekd,
81 * which it can ungetD to be before history substitutions.
83 static Char peekc = 0, peekd = 0;
84 static Char peekread = 0;
86 /* (Tail of) current word from ! subst */
87 static Char *exclp = NULL;
89 /* The rest of the ! subst words */
90 static struct wordent *exclnxt = NULL;
92 /* Count of remaining words in ! subst */
95 /* "Globp" for alias resubstitution */
96 int aret = TCSH_F_SEEK;
99 * Labuf implements a general buffer for lookahead during lexical operations.
100 * Text which is to be placed in the input stream can be stuck here.
101 * We stick parsed ahead $ constructs during initial input,
102 * process id's from `$$', and modified variable values (from qualifiers
103 * during expansion in sh.dol.c) here.
105 static Char labuf[BUFSIZE];
108 * Lex returns to its caller not only a wordlist (as a "var" parameter)
109 * but also whether a history substitution occurred. This is used in
110 * the main (process) routine to determine whether to echo, and also
111 * when called by the alias routine to determine whether to keep the
114 static bool hadhist = 0;
117 * Avoid alias expansion recursion via \!#
121 Char histline[BUFSIZE + 2]; /* last line input */
123 /* The +2 is to fool hp's optimizer */
124 bool histvalid = 0; /* is histline valid */
125 static Char *histlinep = NULL; /* current pointer into histline */
129 #define getC(f) (((getCtmp = peekc) != '\0') ? (peekc = 0, getCtmp) : getC1(f))
130 #define ungetC(c) peekc = (Char) c
131 #define ungetD(c) peekd = (Char) c
133 /* Use Htime to store timestamps picked up from history file for enthist()
134 * if reading saved history (sg)
136 time_t Htime = (time_t)0;
137 static time_t a2time_t __P((Char *));
140 * for history event processing
141 * in the command 'echo !?foo?:1 !$' we want the !$ to expand from the line
142 * 'foo' was found instead of the last command
144 static int uselastevent = 1;
156 histlinep = histline;
160 hp->next = hp->prev = hp;
165 while (c == ' ' || c == '\t');
166 if (c == HISTSUB && intty)
167 /* ^lef^rit from tty is short !:s^lef^rit */
173 * The following loop is written so that the links needed by freelex will
174 * be ready and rarin to go even if it is interrupted.
179 new = (struct wordent *) xmalloc((size_t) sizeof(*wdp));
187 } while (wdp->word[0] != '\n');
188 if (histlinep < histline + BUFSIZE) {
190 if (histlinep > histline && histlinep[-1] == '\n')
191 histlinep[-1] = '\0';
195 histline[BUFSIZE - 1] = '\0';
205 /* Attempt to distinguish timestamps from other possible entries.
206 * Format: "+NNNNNNNNNN" (10 digits, left padded with ascii '0') */
212 if (!word || *(s = word) != '+')
215 for (++s, ret = 0, ct = 0; *s; ++s, ++ct)
217 if (!isdigit((unsigned char)*s))
219 ret = ret * 10 + (time_t)((unsigned char)*s - '0');
232 struct wordent *sp = sp0->next;
235 xprintf("%S", sp->word);
239 if (sp->word[0] != '\n')
256 new = (struct wordent *) xmalloc((size_t) sizeof(*wdp));
263 wdp->word = Strsave(fp->word);
265 } while (wdp->word[0] != '\n');
274 while (vp->next != vp) {
277 if (fp->word != STRNULL)
278 xfree((ptr_t) fp->word);
294 #if defined(DSPMBYTE)
296 #endif /* DSPMBYTE */
301 while ((c = getC(DOALL)) == ' ' || c == '\t')
303 if (cmap(c, _META | _ESC))
329 Htime = a2time_t(hbuf);
357 #if defined(DSPMBYTE)
360 else if (mbytepos == 1 && Ismbyte1(c) && 2 <= i)
363 #endif /* DSPMBYTE */
369 else if (c == '\\') {
372 * PWP: this is dumb, but how all of the other shells work. If \ quotes
373 * a character OUTSIDE of a set of ''s, why shouldn't it quote EVERY
374 * following character INSIDE a set of ''s.
376 * Actually, all I really want to be able to say is 'foo\'bar' --> foo'bar
382 ((c == '\'') || (c == '"') ||
389 * if (c1 == '`') c = ' '; else
397 else if (c == '\n') {
398 seterror(ERR_UNMATCHED, c1);
403 else if (cmap(c, _META | _QF | _QB | _ESC)) {
415 else if (cmap(c, _QF | _QB)) { /* '"` */
417 dolflg = c == '"' ? DOALL : DOEXCL;
419 else if (c != '#' || !intty) {
429 seterror(ERR_WTOOLONG);
436 return (Strsave(wbuf));
446 if ((c = peekc) != 0) {
451 if ((c = *lap++) == 0)
454 if (cmap(c, _META | _QF | _QB))
459 if ((c = peekd) != 0) {
464 if ((c = *exclp++) != 0)
466 if (exclnxt && --exclc >= 0) {
467 exclnxt = exclnxt->next;
468 setexclp(exclnxt->word);
473 /* this will throw away the dummy history entries */
478 exclnxt = exclnxt->next;
482 setexclp(exclnxt->word);
486 if (c == '$' && (flag & DODOL)) {
490 if (c == HIST && (flag & DOEXCL)) {
503 Char name[4 * MAXVARLEN + 1];
506 bool special = 0, toolong;
508 np = name, *np++ = '$';
509 c = sc = getC(DOEXCL);
510 if (any("\t \n", c)) {
516 *np++ = (Char) c, c = getC(DOEXCL);
517 if (c == '#' || c == '?' || c == '%')
518 special++, *np++ = (Char) c, c = getC(DOEXCL);
526 seterror(ERR_SPDOLLT);
535 seterror(ERR_NEWLINE);
542 seterror(ERR_SPSTAR);
551 /* let $?0 pass for now */
559 /* we know that np < &name[4] */
561 while ((c = getC(DOEXCL)) != 0) {
570 else if (letter(c)) {
571 /* we know that np < &name[4] */
574 while ((c = getC(DOEXCL)) != 0) {
575 /* Bugfix for ${v123x} from Chris Torek, DAS DEC-90. */
576 if (!letter(c) && !Isdigit(c))
586 seterror(ERR_VARILL);
596 seterror(ERR_VARTOOLONG);
606 * Name up to here is a max of MAXVARLEN + 8.
608 ep = &np[2 * MAXVARLEN + 8];
611 * Michael Greim: Allow $ expansion to take place in selector
612 * expressions. (limits the number of characters returned)
614 c = getC(DOEXCL | DODOL);
618 seterror(ERR_NLINDEX);
628 seterror(ERR_SELOVFL);
635 * Name up to here is a max of 2 * MAXVARLEN + 8.
639 * if the :g modifier is followed by a newline, then error right away!
643 int gmodflag = 0, amodflag = 0;
648 *np++ = (Char) c, c = getC(DOEXCL);
649 if (c == 'g' || c == 'a') {
654 *np++ = (Char) c; c = getC(DOEXCL);
656 if ((c == 'g' && !gmodflag) || (c == 'a' && !amodflag)) {
661 *np++ = (Char) c; c = getC(DOEXCL);
664 /* scan s// [eichin:19910926.0512EST] */
668 *np++ = (Char) delim;
670 if (!delim || letter(delim)
671 || Isdigit(delim) || any(" \t\n", delim)) {
672 seterror(ERR_BADSUBST);
675 while ((c = getC(0)) != (-1)) {
677 if(c == delim) delimcnt--;
681 seterror(ERR_BADSUBST);
686 if (!any("htrqxesul", c)) {
687 if ((amodflag || gmodflag) && c == '\n')
688 stderror(ERR_VARSYN); /* strike */
689 seterror(ERR_BADMOD, c);
696 while ((c = getC(DOEXCL)) == ':');
706 seterror(ERR_MISSING, '}');
724 if (Strlen(cp) + (lap ? Strlen(lap) : 0) >=
725 (sizeof(labuf) - 4) / sizeof(Char)) {
726 seterror(ERR_EXPOVFL);
730 (void) Strcpy(buf, lap);
731 (void) Strcpy(labuf, cp);
733 (void) Strcat(labuf, buf);
737 static Char lhsb[32];
738 static Char slhs[32];
739 static Char rhsb[64];
746 struct wordent *hp, *ip;
747 int left, right, dol;
771 for (ip = hp->next->next; ip != alhistt; ip = ip->next)
774 for (ip = hp->next->next; ip != hp->prev; ip = ip->next)
776 left = 0, right = dol;
778 ungetC('s'), unreadc(HISTSUB), c = ':';
782 if (!any(":^$*-%", c))
788 if (letter(c) || c == '&') {
790 left = 0, right = dol;
796 if (!getsel(&left, &right, dol))
802 if (!getsel(&left, &right, dol))
807 exclc = right - left + 1;
810 if (sc == HISTSUB || c == ':') {
820 seterror(ERR_BADBANG);
825 static struct wordent *
834 Char orhsb[sizeof(rhsb) / sizeof(Char)];
842 if (c == 'g' || c == 'a') {
843 global |= (c == 'g') ? 1 : 2;
846 if (((c =='g') && !(global & 1)) || ((c == 'a') && !(global & 2))) {
847 global |= (c == 'g') ? 1 : 2;
871 seterror(ERR_NOSUBST);
874 (void) Strcpy(lhsb, slhs);
886 if (letter(delim) || Isdigit(delim) || any(" \t\n", delim)) {
889 seterror(ERR_BADSUBST);
901 if (cp > &lhsb[sizeof(lhsb) / sizeof(Char) - 2]) {
903 seterror(ERR_BADSUBST);
908 if (c != delim && c != '\\')
915 else if (lhsb[0] == 0) {
920 (void) Strcpy(orhsb, cp);
931 if (&cp[Strlen(orhsb)] > &rhsb[sizeof(rhsb) /
934 (void) Strcpy(cp, orhsb);
939 if (cp > &rhsb[sizeof(rhsb) / sizeof(Char) - 2]) {
940 seterror(ERR_RHSLONG);
945 if (c != delim /* && c != '~' */ )
956 seterror(ERR_BADBANGMOD, c);
959 (void) Strcpy(slhs, lhsb);
961 en = dosub(sc, en, global);
964 while ((c = getC(0)) == ':');
972 * From Beto Appleton (beto@aixwiz.austin.ibm.com)
974 * when using history substitution, and the variable
975 * 'history' is set to a value higher than 1000,
976 * the shell might either freeze (hang) or core-dump.
977 * We raise the limit to 50000000
980 #define HIST_PURGE -50000000
981 static struct wordent *
982 dosub(sc, en, global)
988 bool didsub = 0, didone = 0;
989 struct wordent *hp = &lexi;
996 struct wordent *new =
997 (struct wordent *) xcalloc(1, sizeof *wdp);
1006 Char *tword, *otword;
1008 if ((global & 1) || didsub == 0) {
1009 tword = subword(en->word, sc, &didone);
1013 while (didone && tword != STRNULL) {
1015 tword = subword(otword, sc, &didone);
1016 if (Strcmp(tword, otword) == 0) {
1017 xfree((ptr_t) otword);
1021 xfree((ptr_t) otword);
1026 tword = Strsave(en->word);
1031 seterror(ERR_MODFAIL);
1034 * ANSI mode HP/UX compiler chokes on
1035 * return &enthist(HIST_PURGE, &lexi, 0)->Hlex;
1037 hst = enthist(HIST_PURGE, &lexi, 0, 0);
1038 return &(hst->Hlex);
1042 subword(cp, type, adid)
1062 wp = domod(cp, type);
1064 return (Strsave(cp));
1071 for (mp = cp; *mp; mp++)
1072 if (matchs(mp, lhsb)) {
1073 for (np = cp; np < mp;)
1075 for (np = rhsb; *np; np++)
1085 seterror(ERR_SUBOVFL);
1094 seterror(ERR_SUBOVFL);
1098 (void) Strcat(wp, lhsb);
1105 seterror(ERR_SUBOVFL);
1109 (void) Strcat(wp, mp);
1111 return (Strsave(wbuf));
1113 return (Strsave(cp));
1130 for (xp = wp; (c = *xp) != 0; xp++)
1131 if ((c != ' ' && c != '\t') || type == 'q')
1137 for (cp = wp; *cp; cp++)
1146 for (cp = wp; *cp; cp++)
1155 if (!any(short2str(cp), '/'))
1156 return (type == 't' ? Strsave(cp) : 0);
1158 while (*--wp != '/')
1161 xp = Strsave(cp), xp[wp - cp] = 0;
1163 xp = Strsave(wp + 1);
1169 for (wp--; wp >= cp && *wp != '/'; wp--)
1172 xp = Strsave(wp + 1);
1174 xp = Strsave(cp), xp[wp - cp] = 0;
1177 return (Strsave(type == 'e' ? STRNULL : cp));
1188 while (*str && *pat && *str == *pat)
1200 bool first = *al < 0;
1205 if (quesarg == -1) {
1206 seterror(ERR_BADBANGARG);
1248 while (Isdigit(c)) {
1249 i = i * 10 + c - '0';
1271 if (*al > *ar || *ar > dol) {
1272 seterror(ERR_BADBANGARG);
1279 static struct wordent *
1289 c = sc == HISTSUB ? HIST : getC(0);
1304 if (lastev == eventno && alhistp)
1309 case '#': /* !# is command being typed in (mrh) */
1311 seterror(ERR_HISTLOOP);
1324 if (any("(=~", c)) {
1331 while (!cmap(c, _ESC | _META | _QF | _QB) && !any("^*-%${}:#", c)) {
1332 if (event != -1 && Isdigit(c))
1333 event = event * 10 + c - '0';
1336 if (np < &lhsb[sizeof(lhsb) / sizeof(Char) - 2])
1348 * History had only digits
1351 event = eventno + (alhistp == 0) - (event ? event : 0);
1355 event = sizeof(lhsb) / sizeof(lhsb[0]);
1356 np = &lhsb[--event];
1358 for (event--; np > lhsb; *np-- = lhsb[--event])
1362 hp = findev(lhsb, 0);
1377 if (np < &lhsb[sizeof(lhsb) / sizeof(Char) - 2])
1382 seterror(ERR_NOSEARCH);
1388 hp = findev(lhsb, 1);
1394 for (hp = Histlist.Hnext; hp; hp = hp->Hnext)
1395 if (hp->Hnum == event) {
1401 seterror(ERR_NOEVENT, short2str(np));
1405 static struct Hist *
1412 for (hp = Histlist.Hnext; hp; hp = hp->Hnext) {
1415 struct wordent *lp = hp->Hlex.next;
1419 * The entries added by alias substitution don't have a newline but do
1420 * have a negative event number. Savehist() trims off these entries,
1421 * but it happens before alias expansion, too early to delete those
1422 * from the previous command.
1426 if (lp->word[0] == '\n')
1434 while (*p++ == *q++);
1438 for (dp = lp->word; *dp; dp++) {
1446 while (*p++ == *q++);
1450 } while (lp->word[0] != '\n');
1452 seterror(ERR_NOEVENT, short2str(cp));
1461 if (cp && cp[0] == '\n')
1470 peekread = (Char) c;
1478 static int sincereal; /* Number of real EOFs we've seen */
1479 Char *ptr; /* For STRignoreeof */
1480 int numeof = 0; /* Value of STRignoreeof */
1485 if ((c = peekread) != 0) {
1490 /* Compute the value of EOFs */
1491 if ((ptr = varval(STRignoreeof)) != STRNULL) {
1493 if (!Isdigit(*ptr)) {
1497 numeof = numeof * 10 + *ptr++ - '0';
1502 if (numeof < 0) numeof = 26; /* Sanity check */
1509 xprintf("alvecp %c\n", *alvecp & 0xff);
1512 if ((c = *alvecp++) != 0)
1514 if (alvec && *alvec) {
1526 if ((alvecp = *alvec) != 0) {
1530 /* Infinite source! */
1536 if ((c = *evalp++) != 0)
1538 if (evalvec && *evalvec) {
1546 if (evalvec == INVPPTR) {
1550 if ((evalp = *evalvec) != 0) {
1558 if (arginp == INVPTR || onelflg == 1) {
1564 if ((c = *arginp++) == 0) {
1572 #endif /* BSDJOBS */
1575 #ifndef WINNT_NATIVE
1581 # endif /* TERMIO */
1585 #endif /* !WINNT_NATIVE */
1588 /* was isatty but raw with ignoreeof yields problems */
1589 #ifndef WINNT_NATIVE
1592 if (ioctl(SHIN, TCGETA, (ioctl_t) & tty) == 0 &&
1593 (tty.c_lflag & ICANON))
1595 if (ioctl(SHIN, TIOCGETP, (ioctl_t) & tty) == 0 &&
1596 (tty.sg_flags & RAW) == 0)
1597 # endif /* TERMIO */
1599 if (tcgetattr(SHIN, &tty) == 0 &&
1600 (tty.c_lflag & ICANON))
1602 #else /* WINNT_NATIVE */
1604 #endif /* !WINNT_NATIVE */
1608 #endif /* BSDJOBS */
1610 if (numeof != 0 && ++sincereal >= numeof) /* Too many EOFs? Bye! */
1614 (ctpgrp = tcgetpgrp(FSHTTY)) != -1 &&
1616 (void) tcsetpgrp(FSHTTY, tpgrp);
1619 # endif /* _SEQUENT */
1620 (void) killpg((pid_t) ctpgrp, SIGHUP);
1623 * With the walking process group fix, this message
1624 * is now obsolete. As the foreground process group
1625 * changes, the shell needs to adjust. Well too bad.
1627 xprintf(CGETS(16, 1, "Reset tty pgrp from %d to %d\n"),
1629 # endif /* notdef */
1632 #endif /* BSDJOBS */
1633 /* What follows is complicated EOF handling -- sterling@netcom.com */
1634 /* First, we check to see if we have ignoreeof set */
1635 if (adrof(STRignoreeof)) {
1636 /* If so, we check for any stopped jobs only on the first EOF */
1637 if ((sincereal == 1) && (chkstop == 0)) {
1641 /* If we don't have ignoreeof set, always check for stopped jobs */
1646 /* At this point, if there were stopped jobs, we would have already
1647 * called reset(). If we got this far, assume we can print an
1648 * exit/logout message if we ignoreeof, or just exit.
1650 if (adrof(STRignoreeof)) {
1651 /* If so, tell the user to use exit or logout */
1653 xprintf(CGETS(16, 2,
1654 "\nUse \"logout\" to logout.\n"));
1656 xprintf(CGETS(16, 3,
1657 "\nUse \"exit\" to leave %s.\n"),
1662 /* If we don't have ignoreeof set, just fall through */
1671 if (c == '\n' && onelflg)
1674 if (histlinep < histline + BUFSIZE)
1675 *histlinep++ = (Char) c;
1685 while (buf >= fblocks) {
1686 nfbuf = (Char **) xcalloc((size_t) (fblocks + 2),
1689 (void) blkcpy(nfbuf, fbuf);
1690 xfree((ptr_t) fbuf);
1693 fbuf[fblocks] = (Char *) xcalloc(BUFSIZE, sizeof(Char));
1702 int numleft = 0, roomleft;
1703 char tbuf[BUFSIZE + 1];
1706 if (fseekp < fbobp || fseekp > feobp) {
1707 fbobp = feobp = fseekp;
1708 (void) lseek(SHIN, fseekp, L_SET);
1710 if (fseekp == feobp) {
1715 c = read(SHIN, tbuf, BUFSIZE);
1716 while (c < 0 && errno == EINTR);
1719 stderror(ERR_SYSTEM, progname, strerror(errno));
1723 for (i = 0; i < c; i++)
1724 fbuf[0][i] = (unsigned char) tbuf[i];
1727 #ifndef WINNT_NATIVE
1728 c = fbuf[0][fseekp - fbobp];
1732 c = fbuf[0][fseekp - fbobp];
1735 #endif /* !WINNT_NATIVE */
1739 while (fseekp >= feobp) {
1741 #if defined(FILEC) && defined(TIOCSTI)
1743 #endif /* FILEC && TIOCSTI */
1744 ) && intty) { /* then use twenex routine */
1745 fseekp = feobp; /* where else? */
1746 #if defined(FILEC) && defined(TIOCSTI)
1748 c = numleft = tenex(InputBuf, BUFSIZE);
1750 #endif /* FILEC && TIOCSTI */
1751 c = numleft = Inputl(); /* PWP: get a line */
1752 while (numleft > 0) {
1753 off = (int) feobp % BUFSIZE;
1754 buf = (int) feobp / BUFSIZE;
1756 roomleft = BUFSIZE - off;
1757 if (roomleft > numleft)
1759 (void) memmove((ptr_t) (fbuf[buf] + off),
1760 (ptr_t) (InputBuf + c - numleft),
1761 (size_t) (roomleft * sizeof(Char)));
1762 numleft -= roomleft;
1766 off = (int) feobp % BUFSIZE;
1767 buf = (int) feobp / BUFSIZE;
1769 roomleft = BUFSIZE - off;
1770 c = read(SHIN, tbuf, (size_t) roomleft);
1773 Char *ptr = fbuf[buf] + off;
1775 for (i = 0; i < c; i++)
1776 ptr[i] = (unsigned char) tbuf[i];
1780 if (c == 0 || (c < 0 && fixio(SHIN, errno) == -1))
1783 #ifndef WINNT_NATIVE
1784 c = fbuf[(int) fseekp / BUFSIZE][(int) fseekp % BUFSIZE];
1788 c = fbuf[(int) fseekp / BUFSIZE][(int) fseekp % BUFSIZE];
1791 #endif /* !WINNT_NATIVE */
1804 sb = (int) (fseekp - 1) / BUFSIZE;
1806 for (i = 0; i < sb; i++)
1807 xfree((ptr_t) fbuf[i]);
1808 (void) blkcpy(fbuf, &fbuf[sb]);
1809 fseekp -= BUFSIZE * sb;
1810 feobp -= BUFSIZE * sb;
1819 switch (aret = l->type) {
1821 evalvec = l->a_seek;
1824 xprintf(CGETS(16, 4, "seek to eval %x %x\n"), evalvec, evalp);
1831 xprintf(CGETS(16, 5, "seek to alias %x %x\n"), alvec, alvecp);
1836 xprintf(CGETS(16, 6, "seek to file %x\n"), fseekp);
1841 xprintf(CGETS(16, 7, "Bad seek type %d\n"), aret);
1846 /* any similarity to bell telephone is purely accidental */
1851 switch (l->type = aret) {
1853 l->a_seek = evalvec;
1856 xprintf(CGETS(16, 8, "tell eval %x %x\n"), evalvec, evalp);
1863 xprintf(CGETS(16, 9, "tell alias %x %x\n"), alvec, alvecp);
1871 xprintf(CGETS(16, 10, "tell file %x\n"), fseekp);
1875 xprintf(CGETS(16, 7, "Bad seek type %d\n"), aret);
1883 (void) lseek(SHIN, (off_t) 0, L_XTND);
1899 if (arginp || onelflg || intty)
1901 if ((x = lseek(SHIN, (off_t) 0, L_INCR)) == -1)
1903 fbuf = (Char **) xcalloc(2, sizeof(Char **));
1905 fbuf[0] = (Char *) xcalloc(BUFSIZE, sizeof(Char));
1906 fseekp = fbobp = feobp = x;