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-rw-r--r--bin/csh/dol.c991
1 files changed, 0 insertions, 991 deletions
diff --git a/bin/csh/dol.c b/bin/csh/dol.c
deleted file mode 100644
index fdab107..0000000
--- a/bin/csh/dol.c
+++ /dev/null
@@ -1,991 +0,0 @@
-/*-
- * Copyright (c) 1980, 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)dol.c 8.1 (Berkeley) 5/31/93";
-#else
-static const char rcsid[] =
- "$FreeBSD$";
-#endif
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#if __STDC__
-# include <stdarg.h>
-#else
-# include <varargs.h>
-#endif
-
-#include "csh.h"
-#include "extern.h"
-
-/*
- * These routines perform variable substitution and quoting via ' and ".
- * To this point these constructs have been preserved in the divided
- * input words. Here we expand variables and turn quoting via ' and " into
- * QUOTE bits on characters (which prevent further interpretation).
- * If the `:q' modifier was applied during history expansion, then
- * some QUOTEing may have occurred already, so we dont "trim()" here.
- */
-
-static int Dpeekc, Dpeekrd; /* Peeks for DgetC and Dreadc */
-static Char *Dcp, **Dvp; /* Input vector for Dreadc */
-
-#define DEOF -1
-
-#define unDgetC(c) Dpeekc = c
-
-#define QUOTES (_QF|_QB|_ESC) /* \ ' " ` */
-
-/*
- * The following variables give the information about the current
- * $ expansion, recording the current word position, the remaining
- * words within this expansion, the count of remaining words, and the
- * information about any : modifier which is being applied.
- */
-#define MAXWLEN (BUFSIZ - 4)
-#define MAXMOD MAXWLEN /* This cannot overflow */
-static Char *dolp; /* Remaining chars from this word */
-static Char **dolnxt; /* Further words */
-static int dolcnt; /* Count of further words */
-static Char dolmod[MAXMOD]; /* : modifier character */
-static int dolnmod; /* Number of modifiers */
-static int dolmcnt; /* :gx -> 10000, else 1 */
-static int dolwcnt; /* :wx -> 10000, else 1 */
-
-static void Dfix2 __P((Char **));
-static Char *Dpack __P((Char *, Char *));
-static int Dword __P((void));
-static void dolerror __P((Char *));
-static int DgetC __P((int));
-static void Dgetdol __P((void));
-static void fixDolMod __P((void));
-static void setDolp __P((Char *));
-static void unDredc __P((int));
-static int Dredc __P((void));
-static void Dtestq __P((int));
-
-
-/*
- * Fix up the $ expansions and quotations in the
- * argument list to command t.
- */
-void
-Dfix(t)
- struct command *t;
-{
- Char **pp;
- Char *p;
-
- if (noexec)
- return;
- /* Note that t_dcom isn't trimmed thus !...:q's aren't lost */
- for (pp = t->t_dcom; (p = *pp++) != NULL;)
- for (; *p; p++) {
- if (cmap(*p, _DOL | QUOTES)) { /* $, \, ', ", ` */
- Dfix2(t->t_dcom); /* found one */
- blkfree(t->t_dcom);
- t->t_dcom = gargv;
- gargv = 0;
- return;
- }
- }
-}
-
-/*
- * $ substitute one word, for i/o redirection
- */
-Char *
-Dfix1(cp)
- Char *cp;
-{
- Char *Dv[2];
-
- if (noexec)
- return (0);
- Dv[0] = cp;
- Dv[1] = NULL;
- Dfix2(Dv);
- if (gargc != 1) {
- setname(vis_str(cp));
- stderror(ERR_NAME | ERR_AMBIG);
- }
- cp = Strsave(gargv[0]);
- blkfree(gargv), gargv = 0;
- return (cp);
-}
-
-/*
- * Subroutine to do actual fixing after state initialization.
- */
-static void
-Dfix2(v)
- Char **v;
-{
- ginit(); /* Initialize glob's area pointers */
- Dvp = v;
- Dcp = STRNULL; /* Setup input vector for Dreadc */
- unDgetC(0);
- unDredc(0); /* Clear out any old peeks (at error) */
- dolp = 0;
- dolcnt = 0; /* Clear out residual $ expands (...) */
- while (Dword())
- continue;
-}
-
-/*
- * Pack up more characters in this word
- */
-static Char *
-Dpack(wbuf, wp)
- Char *wbuf, *wp;
-{
- int c;
- int i = MAXWLEN - (wp - wbuf);
-
- for (;;) {
- c = DgetC(DODOL);
- if (c == '\\') {
- c = DgetC(0);
- if (c == DEOF) {
- unDredc(c);
- *wp = 0;
- Gcat(STRNULL, wbuf);
- return (NULL);
- }
- if (c == '\n')
- c = ' ';
- else
- c |= QUOTE;
- }
- if (c == DEOF) {
- unDredc(c);
- *wp = 0;
- Gcat(STRNULL, wbuf);
- return (NULL);
- }
- if (cmap(c, _SP | _NL | _QF | _QB)) { /* sp \t\n'"` */
- unDgetC(c);
- if (cmap(c, QUOTES))
- return (wp);
- *wp++ = 0;
- Gcat(STRNULL, wbuf);
- return (NULL);
- }
- if (--i <= 0)
- stderror(ERR_WTOOLONG);
- *wp++ = c;
- }
-}
-
-/*
- * Get a word. This routine is analogous to the routine
- * word() in sh.lex.c for the main lexical input. One difference
- * here is that we don't get a newline to terminate our expansion.
- * Rather, DgetC will return a DEOF when we hit the end-of-input.
- */
-static int
-Dword()
-{
- int c, c1;
- Char wbuf[BUFSIZ];
- Char *wp = wbuf;
- int i = MAXWLEN;
- bool dolflg;
- bool sofar = 0, done = 0;
-
- while (!done) {
- done = 1;
- c = DgetC(DODOL);
- switch (c) {
-
- case DEOF:
- if (sofar == 0)
- return (0);
- /* finish this word and catch the code above the next time */
- unDredc(c);
- /* fall into ... */
-
- case '\n':
- *wp = 0;
- Gcat(STRNULL, wbuf);
- return (1);
-
- case ' ':
- case '\t':
- done = 0;
- break;
-
- case '`':
- /* We preserve ` quotations which are done yet later */
- *wp++ = c, --i;
- case '\'':
- case '"':
- /*
- * Note that DgetC never returns a QUOTES character from an
- * expansion, so only true input quotes will get us here or out.
- */
- c1 = c;
- dolflg = c1 == '"' ? DODOL : 0;
- for (;;) {
- c = DgetC(dolflg);
- if (c == c1)
- break;
- if (c == '\n' || c == DEOF)
- stderror(ERR_UNMATCHED, c1);
- if ((c & (QUOTE | TRIM)) == ('\n' | QUOTE))
- --wp, ++i;
- if (--i <= 0)
- stderror(ERR_WTOOLONG);
- switch (c1) {
-
- case '"':
- /*
- * Leave any `s alone for later. Other chars are all
- * quoted, thus `...` can tell it was within "...".
- */
- *wp++ = c == '`' ? '`' : c | QUOTE;
- break;
-
- case '\'':
- /* Prevent all further interpretation */
- *wp++ = c | QUOTE;
- break;
-
- case '`':
- /* Leave all text alone for later */
- *wp++ = c;
- break;
-
- default:
- break;
- }
- }
- if (c1 == '`')
- *wp++ = '`' /* i--; eliminated */;
- sofar = 1;
- if ((wp = Dpack(wbuf, wp)) == NULL)
- return (1);
- else {
- i = MAXWLEN - (wp - wbuf);
- done = 0;
- }
- break;
-
- case '\\':
- c = DgetC(0); /* No $ subst! */
- if (c == '\n' || c == DEOF) {
- done = 0;
- break;
- }
- c |= QUOTE;
- break;
-
- default:
- break;
- }
- if (done) {
- unDgetC(c);
- sofar = 1;
- if ((wp = Dpack(wbuf, wp)) == NULL)
- return (1);
- else {
- i = MAXWLEN - (wp - wbuf);
- done = 0;
- }
- }
- }
- /* Really NOTREACHED */
- return (0);
-}
-
-
-/*
- * Get a character, performing $ substitution unless flag is 0.
- * Any QUOTES character which is returned from a $ expansion is
- * QUOTEd so that it will not be recognized above.
- */
-static int
-DgetC(flag)
- int flag;
-{
- int c;
-
-top:
- if ((c = Dpeekc) != '\0') {
- Dpeekc = 0;
- return (c);
- }
- if (lap) {
- c = *lap++ & (QUOTE | TRIM);
- if (c == 0) {
- lap = 0;
- goto top;
- }
-quotspec:
- if (cmap(c, QUOTES))
- return (c | QUOTE);
- return (c);
- }
- if (dolp) {
- if ((c = *dolp++ & (QUOTE | TRIM)) != '\0')
- goto quotspec;
- if (dolcnt > 0) {
- setDolp(*dolnxt++);
- --dolcnt;
- return (' ');
- }
- dolp = 0;
- }
- if (dolcnt > 0) {
- setDolp(*dolnxt++);
- --dolcnt;
- goto top;
- }
- c = Dredc();
- if (c == '$' && flag) {
- Dgetdol();
- goto top;
- }
- return (c);
-}
-
-static Char *nulvec[] = {0};
-static struct varent nulargv = {nulvec, STRargv, { NULL, NULL, NULL }, 0};
-
-static void
-dolerror(s)
- Char *s;
-{
- setname(vis_str(s));
- stderror(ERR_NAME | ERR_RANGE);
-}
-
-/*
- * Handle the multitudinous $ expansion forms.
- * Ugh.
- */
-static void
-Dgetdol()
-{
- Char *np;
- struct varent *vp = NULL;
- Char name[4 * MAXVARLEN + 1];
- int c, sc;
- int subscr = 0, lwb = 1, upb = 0;
- bool dimen = 0, bitset = 0;
- char tnp;
- Char wbuf[BUFSIZ];
- static Char *dolbang = NULL;
-
- dolnmod = dolmcnt = dolwcnt = 0;
- c = sc = DgetC(0);
- if (c == '{')
- c = DgetC(0); /* sc is { to take } later */
- if ((c & TRIM) == '#')
- dimen++, c = DgetC(0); /* $# takes dimension */
- else if (c == '?')
- bitset++, c = DgetC(0); /* $? tests existence */
- switch (c) {
-
- case '!':
- if (dimen || bitset)
- stderror(ERR_SYNTAX);
- if (backpid != 0) {
- if (dolbang)
- xfree((ptr_t) dolbang);
- setDolp(dolbang = putn(backpid));
- }
- goto eatbrac;
-
- case '$':
- if (dimen || bitset)
- stderror(ERR_SYNTAX);
- setDolp(doldol);
- goto eatbrac;
-
- case '<' | QUOTE:
- if (bitset)
- stderror(ERR_NOTALLOWED, "$?<");
- if (dimen)
- stderror(ERR_NOTALLOWED, "$?#");
- for (np = wbuf; read(OLDSTD, &tnp, 1) == 1; np++) {
- *np = (unsigned char) tnp;
- if (np >= &wbuf[BUFSIZ - 1])
- stderror(ERR_LTOOLONG);
- if (tnp == '\n')
- break;
- }
- *np = 0;
- /*
- * KLUDGE: dolmod is set here because it will cause setDolp to call
- * domod and thus to copy wbuf. Otherwise setDolp would use it
- * directly. If we saved it ourselves, no one would know when to free
- * it. The actual function of the 'q' causes filename expansion not to
- * be done on the interpolated value.
- */
- dolmod[dolnmod++] = 'q';
- dolmcnt = 10000;
- setDolp(wbuf);
- goto eatbrac;
-
- case DEOF:
- case '\n':
- stderror(ERR_SYNTAX);
- /* NOTREACHED */
- break;
-
- case '*':
- (void) Strcpy(name, STRargv);
- vp = adrof(STRargv);
- subscr = -1; /* Prevent eating [...] */
- break;
-
- default:
- np = name;
- if (Isdigit(c)) {
- if (dimen)
- stderror(ERR_NOTALLOWED, "$#<num>");
- subscr = 0;
- do {
- subscr = subscr * 10 + c - '0';
- c = DgetC(0);
- } while (Isdigit(c));
- unDredc(c);
- if (subscr < 0) {
- dolerror(vp->v_name);
- return;
- }
- if (subscr == 0) {
- if (bitset) {
- dolp = ffile ? STR1 : STR0;
- goto eatbrac;
- }
- if (ffile == 0)
- stderror(ERR_DOLZERO);
- fixDolMod();
- setDolp(ffile);
- goto eatbrac;
- }
- if (bitset)
- stderror(ERR_DOLQUEST);
- vp = adrof(STRargv);
- if (vp == 0) {
- vp = &nulargv;
- goto eatmod;
- }
- break;
- }
- if (!alnum(c))
- stderror(ERR_VARALNUM);
- for (;;) {
- *np++ = c;
- c = DgetC(0);
- if (!alnum(c))
- break;
- if (np >= &name[MAXVARLEN])
- stderror(ERR_VARTOOLONG);
- }
- *np++ = 0;
- unDredc(c);
- vp = adrof(name);
- }
- if (bitset) {
- dolp = (vp || getenv(short2str(name))) ? STR1 : STR0;
- goto eatbrac;
- }
- if (vp == 0) {
- np = str2short(getenv(short2str(name)));
- if (np) {
- fixDolMod();
- setDolp(np);
- goto eatbrac;
- }
- udvar(name);
- /* NOTREACHED */
- }
- c = DgetC(0);
- upb = blklen(vp->vec);
- if (dimen == 0 && subscr == 0 && c == '[') {
- np = name;
- for (;;) {
- c = DgetC(DODOL); /* Allow $ expand within [ ] */
- if (c == ']')
- break;
- if (c == '\n' || c == DEOF)
- stderror(ERR_INCBR);
- if (np >= &name[sizeof(name) / sizeof(Char) - 2])
- stderror(ERR_VARTOOLONG);
- *np++ = c;
- }
- *np = 0, np = name;
- if (dolp || dolcnt) /* $ exp must end before ] */
- stderror(ERR_EXPORD);
- if (!*np)
- stderror(ERR_SYNTAX);
- if (Isdigit(*np)) {
- int i;
-
- for (i = 0; Isdigit(*np); i = i * 10 + *np++ - '0')
- continue;
- if ((i < 0 || i > upb) && !any("-*", *np)) {
- dolerror(vp->v_name);
- return;
- }
- lwb = i;
- if (!*np)
- upb = lwb, np = STRstar;
- }
- if (*np == '*')
- np++;
- else if (*np != '-')
- stderror(ERR_MISSING, '-');
- else {
- int i = upb;
-
- np++;
- if (Isdigit(*np)) {
- i = 0;
- while (Isdigit(*np))
- i = i * 10 + *np++ - '0';
- if (i < 0 || i > upb) {
- dolerror(vp->v_name);
- return;
- }
- }
- if (i < lwb)
- upb = lwb - 1;
- else
- upb = i;
- }
- if (lwb == 0) {
- if (upb != 0) {
- dolerror(vp->v_name);
- return;
- }
- upb = -1;
- }
- if (*np)
- stderror(ERR_SYNTAX);
- }
- else {
- if (subscr > 0) {
- if (subscr > upb)
- lwb = 1, upb = 0;
- else
- lwb = upb = subscr;
- }
- unDredc(c);
- }
- if (dimen) {
- Char *cp = putn(upb - lwb + 1);
-
- addla(cp);
- xfree((ptr_t) cp);
- }
- else {
-eatmod:
- fixDolMod();
- dolnxt = &vp->vec[lwb - 1];
- dolcnt = upb - lwb + 1;
- }
-eatbrac:
- if (sc == '{') {
- c = Dredc();
- if (c != '}')
- stderror(ERR_MISSING, '}');
- }
-}
-
-static void
-fixDolMod()
-{
- int c;
-
- c = DgetC(0);
- if (c == ':') {
- do {
- c = DgetC(0), dolmcnt = 1, dolwcnt = 1;
- if (c == 'g' || c == 'a') {
- if (c == 'g')
- dolmcnt = 10000;
- else
- dolwcnt = 10000;
- c = DgetC(0);
- }
- if ((c == 'g' && dolmcnt != 10000) ||
- (c == 'a' && dolwcnt != 10000)) {
- if (c == 'g')
- dolmcnt = 10000;
- else
- dolwcnt = 10000;
- c = DgetC(0);
- }
-
- if (c == 's') { /* [eichin:19910926.0755EST] */
- int delimcnt = 2;
- int delim = DgetC(0);
- dolmod[dolnmod++] = c;
- dolmod[dolnmod++] = delim;
-
- if (!delim || letter(delim)
- || Isdigit(delim) || any(" \t\n", delim)) {
- seterror(ERR_BADSUBST);
- break;
- }
- while ((c = DgetC(0)) != (-1)) {
- dolmod[dolnmod++] = c;
- if(c == delim) delimcnt--;
- if(!delimcnt) break;
- }
- if(delimcnt) {
- seterror(ERR_BADSUBST);
- break;
- }
- continue;
- }
- if (!any("htrqxes", c))
- stderror(ERR_BADMOD, c);
- dolmod[dolnmod++] = c;
- if (c == 'q')
- dolmcnt = 10000;
- }
- while ((c = DgetC(0)) == ':');
- unDredc(c);
- }
- else
- unDredc(c);
-}
-
-static void
-setDolp(cp)
- Char *cp;
-{
- Char *dp;
- int i;
-
- if (dolnmod == 0 || dolmcnt == 0) {
- dolp = cp;
- return;
- }
- dp = cp = Strsave(cp);
- for (i = 0; i < dolnmod; i++) {
- /* handle s// [eichin:19910926.0510EST] */
- if(dolmod[i] == 's') {
- int delim;
- Char *lhsub, *rhsub, *np;
- size_t lhlen = 0, rhlen = 0;
- int didmod = 0;
-
- delim = dolmod[++i];
- if (!delim || letter(delim)
- || Isdigit(delim) || any(" \t\n", delim)) {
- seterror(ERR_BADSUBST);
- break;
- }
- lhsub = &dolmod[++i];
- while(dolmod[i] != delim && dolmod[++i]) {
- lhlen++;
- }
- dolmod[i] = 0;
- rhsub = &dolmod[++i];
- while(dolmod[i] != delim && dolmod[++i]) {
- rhlen++;
- }
- dolmod[i] = 0;
-
- do {
- dp = Strstr(cp, lhsub);
- if (dp) {
- np = (Char *) xmalloc((size_t)
- ((Strlen(cp) + 1 - lhlen + rhlen) *
- sizeof(Char)));
- (void) Strncpy(np, cp, dp - cp);
- (void) Strcpy(np + (dp - cp), rhsub);
- (void) Strcpy(np + (dp - cp) + rhlen, dp + lhlen);
-
- xfree((ptr_t) cp);
- dp = cp = np;
- didmod = 1;
- } else {
- /* should this do a seterror? */
- break;
- }
- }
- while (dolwcnt == 10000);
- /*
- * restore dolmod for additional words
- */
- dolmod[i] = rhsub[-1] = delim;
- if (didmod)
- dolmcnt--;
- else
- break;
- } else {
- int didmod = 0;
-
- do {
- if ((dp = domod(cp, dolmod[i]))) {
- didmod = 1;
- if (Strcmp(cp, dp) == 0) {
- xfree((ptr_t) cp);
- cp = dp;
- break;
- }
- else {
- xfree((ptr_t) cp);
- cp = dp;
- }
- }
- else
- break;
- }
- while (dolwcnt == 10000);
- dp = cp;
- if (didmod)
- dolmcnt--;
- else
- break;
- }
- }
-
- if (dp) {
- addla(dp);
- xfree((ptr_t) dp);
- }
- else
- addla(cp);
-
- dolp = STRNULL;
- if (seterr)
- stderror(ERR_OLD);
-}
-
-static void
-unDredc(c)
- int c;
-{
-
- Dpeekrd = c;
-}
-
-static int
-Dredc()
-{
- int c;
-
- if ((c = Dpeekrd) != '\0') {
- Dpeekrd = 0;
- return (c);
- }
- if (Dcp && (c = *Dcp++))
- return (c & (QUOTE | TRIM));
- if (*Dvp == 0) {
- Dcp = 0;
- return (DEOF);
- }
- Dcp = *Dvp++;
- return (' ');
-}
-
-static void
-Dtestq(c)
- int c;
-{
-
- if (cmap(c, QUOTES))
- gflag = 1;
-}
-
-/*
- * Form a shell temporary file (in unit 0) from the words
- * of the shell input up to EOF or a line the same as "term".
- * Unit 0 should have been closed before this call.
- */
-void
-/*ARGSUSED*/
-heredoc(term)
- Char *term;
-{
- int c;
- Char *Dv[2];
- Char obuf[BUFSIZ], lbuf[BUFSIZ], mbuf[BUFSIZ];
- int ocnt, lcnt, mcnt;
- Char *lbp, *obp, *mbp;
- Char **vp;
- bool quoted;
- char *tmp;
-
- if (creat(tmp = short2str(shtemp), 0600) < 0)
- stderror(ERR_SYSTEM, tmp, strerror(errno));
- (void) close(0);
- if (open(tmp, O_RDWR) < 0) {
- int oerrno = errno;
-
- (void) unlink(tmp);
- errno = oerrno;
- stderror(ERR_SYSTEM, tmp, strerror(errno));
- }
- (void) unlink(tmp); /* 0 0 inode! */
- Dv[0] = term;
- Dv[1] = NULL;
- gflag = 0;
- trim(Dv);
- rscan(Dv, Dtestq);
- quoted = gflag;
- ocnt = BUFSIZ;
- obp = obuf;
- for (;;) {
- /*
- * Read up a line
- */
- lbp = lbuf;
- lcnt = BUFSIZ - 4;
- for (;;) {
- c = readc(1); /* 1 -> Want EOF returns */
- if (c < 0 || c == '\n')
- break;
- if ((c &= TRIM) != '\0') {
- *lbp++ = c;
- if (--lcnt < 0) {
- setname("<<");
- stderror(ERR_NAME | ERR_OVERFLOW);
- }
- }
- }
- *lbp = 0;
-
- /*
- * Check for EOF or compare to terminator -- before expansion
- */
- if (c < 0 || eq(lbuf, term)) {
- (void) write(0, short2str(obuf), (size_t) (BUFSIZ - ocnt));
- (void) lseek(0, 0l, L_SET);
- return;
- }
-
- /*
- * If term was quoted or -n just pass it on
- */
- if (quoted || noexec) {
- *lbp++ = '\n';
- *lbp = 0;
- for (lbp = lbuf; (c = *lbp++) != '\0';) {
- *obp++ = c;
- if (--ocnt == 0) {
- (void) write(0, short2str(obuf), BUFSIZ);
- obp = obuf;
- ocnt = BUFSIZ;
- }
- }
- continue;
- }
-
- /*
- * Term wasn't quoted so variable and then command expand the input
- * line
- */
- Dcp = lbuf;
- Dvp = Dv + 1;
- mbp = mbuf;
- mcnt = BUFSIZ - 4;
- for (;;) {
- c = DgetC(DODOL);
- if (c == DEOF)
- break;
- if ((c &= TRIM) == 0)
- continue;
- /* \ quotes \ $ ` here */
- if (c == '\\') {
- c = DgetC(0);
- if (!any("$\\`", c))
- unDgetC(c | QUOTE), c = '\\';
- else
- c |= QUOTE;
- }
- *mbp++ = c;
- if (--mcnt == 0) {
- setname("<<");
- stderror(ERR_NAME | ERR_OVERFLOW);
- }
- }
- *mbp++ = 0;
-
- /*
- * If any ` in line do command substitution
- */
- mbp = mbuf;
- if (any(short2str(mbp), '`')) {
- /*
- * 1 arg to dobackp causes substitution to be literal. Words are
- * broken only at newlines so that all blanks and tabs are
- * preserved. Blank lines (null words) are not discarded.
- */
- vp = dobackp(mbuf, 1);
- }
- else
- /* Setup trivial vector similar to return of dobackp */
- Dv[0] = mbp, Dv[1] = NULL, vp = Dv;
-
- /*
- * Resurrect the words from the command substitution each separated by
- * a newline. Note that the last newline of a command substitution
- * will have been discarded, but we put a newline after the last word
- * because this represents the newline after the last input line!
- */
- for (; *vp; vp++) {
- for (mbp = *vp; *mbp; mbp++) {
- *obp++ = *mbp & TRIM;
- if (--ocnt == 0) {
- (void) write(0, short2str(obuf), BUFSIZ);
- obp = obuf;
- ocnt = BUFSIZ;
- }
- }
- *obp++ = '\n';
- if (--ocnt == 0) {
- (void) write(0, short2str(obuf), BUFSIZ);
- obp = obuf;
- ocnt = BUFSIZ;
- }
- }
- if (pargv)
- blkfree(pargv), pargv = 0;
- }
-}
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