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-rw-r--r--bin/csh/exp.c712
1 files changed, 0 insertions, 712 deletions
diff --git a/bin/csh/exp.c b/bin/csh/exp.c
deleted file mode 100644
index b6ec280..0000000
--- a/bin/csh/exp.c
+++ /dev/null
@@ -1,712 +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[] = "@(#)exp.c 8.1 (Berkeley) 5/31/93";
-#else
-static const char rcsid[] =
- "$FreeBSD$";
-#endif
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#if __STDC__
-# include <stdarg.h>
-#else
-# include <varargs.h>
-#endif
-
-#include "csh.h"
-#include "extern.h"
-
-#define IGNORE 1 /* in ignore, it means to ignore value, just parse */
-#define NOGLOB 2 /* in ignore, it means not to globone */
-
-#define ADDOP 1
-#define MULOP 2
-#define EQOP 4
-#define RELOP 8
-#define RESTOP 16
-#define ANYOP 31
-
-#define EQEQ 1
-#define GTR 2
-#define LSS 4
-#define NOTEQ 6
-#define EQMATCH 7
-#define NOTEQMATCH 8
-
-static int exp1 __P((Char ***, bool));
-static int exp2 __P((Char ***, bool));
-static int exp2a __P((Char ***, bool));
-static int exp2b __P((Char ***, bool));
-static int exp2c __P((Char ***, bool));
-static Char * exp3 __P((Char ***, bool));
-static Char * exp3a __P((Char ***, bool));
-static Char * exp4 __P((Char ***, bool));
-static Char * exp5 __P((Char ***, bool));
-static Char * exp6 __P((Char ***, bool));
-static void evalav __P((Char **));
-static int isa __P((Char *, int));
-static int egetn __P((Char *));
-
-#ifdef EDEBUG
-static void etracc __P((char *, Char *, Char ***));
-static void etraci __P((char *, int, Char ***));
-#endif
-
-int
-expr(vp)
- Char ***vp;
-{
- return (exp0(vp, 0));
-}
-
-int
-exp0(vp, ignore)
- Char ***vp;
- bool ignore;
-{
- int p1 = exp1(vp, ignore);
-
-#ifdef EDEBUG
- etraci("exp0 p1", p1, vp);
-#endif
- if (**vp && eq(**vp, STRor2)) {
- int p2;
-
- (*vp)++;
- p2 = exp0(vp, (ignore & IGNORE) || p1);
-#ifdef EDEBUG
- etraci("exp0 p2", p2, vp);
-#endif
- return (p1 || p2);
- }
- return (p1);
-}
-
-static int
-exp1(vp, ignore)
- Char ***vp;
- bool ignore;
-{
- int p1 = exp2(vp, ignore);
-
-#ifdef EDEBUG
- etraci("exp1 p1", p1, vp);
-#endif
- if (**vp && eq(**vp, STRand2)) {
- int p2;
-
- (*vp)++;
- p2 = exp1(vp, (ignore & IGNORE) || !p1);
-#ifdef EDEBUG
- etraci("exp1 p2", p2, vp);
-#endif
- return (p1 && p2);
- }
- return (p1);
-}
-
-static int
-exp2(vp, ignore)
- Char ***vp;
- bool ignore;
-{
- int p1 = exp2a(vp, ignore);
-
-#ifdef EDEBUG
- etraci("exp3 p1", p1, vp);
-#endif
- if (**vp && eq(**vp, STRor)) {
- int p2;
-
- (*vp)++;
- p2 = exp2(vp, ignore);
-#ifdef EDEBUG
- etraci("exp3 p2", p2, vp);
-#endif
- return (p1 | p2);
- }
- return (p1);
-}
-
-static int
-exp2a(vp, ignore)
- Char ***vp;
- bool ignore;
-{
- int p1 = exp2b(vp, ignore);
-
-#ifdef EDEBUG
- etraci("exp2a p1", p1, vp);
-#endif
- if (**vp && eq(**vp, STRcaret)) {
- int p2;
-
- (*vp)++;
- p2 = exp2a(vp, ignore);
-#ifdef EDEBUG
- etraci("exp2a p2", p2, vp);
-#endif
- return (p1 ^ p2);
- }
- return (p1);
-}
-
-static int
-exp2b(vp, ignore)
- Char ***vp;
- bool ignore;
-{
- int p1 = exp2c(vp, ignore);
-
-#ifdef EDEBUG
- etraci("exp2b p1", p1, vp);
-#endif
- if (**vp && eq(**vp, STRand)) {
- int p2;
-
- (*vp)++;
- p2 = exp2b(vp, ignore);
-#ifdef EDEBUG
- etraci("exp2b p2", p2, vp);
-#endif
- return (p1 & p2);
- }
- return (p1);
-}
-
-static int
-exp2c(vp, ignore)
- Char ***vp;
- bool ignore;
-{
- Char *p1 = exp3(vp, ignore);
- Char *p2;
- int i;
-
-#ifdef EDEBUG
- etracc("exp2c p1", p1, vp);
-#endif
- if ((i = isa(**vp, EQOP)) != 0) {
- (*vp)++;
- if (i == EQMATCH || i == NOTEQMATCH)
- ignore |= NOGLOB;
- p2 = exp3(vp, ignore);
-#ifdef EDEBUG
- etracc("exp2c p2", p2, vp);
-#endif
- if (!(ignore & IGNORE))
- switch (i) {
-
- case EQEQ:
- i = eq(p1, p2);
- break;
-
- case NOTEQ:
- i = !eq(p1, p2);
- break;
-
- case EQMATCH:
- i = Gmatch(p1, p2);
- break;
-
- case NOTEQMATCH:
- i = !Gmatch(p1, p2);
- break;
- }
- xfree((ptr_t) p1);
- xfree((ptr_t) p2);
- return (i);
- }
- i = egetn(p1);
- xfree((ptr_t) p1);
- return (i);
-}
-
-static Char *
-exp3(vp, ignore)
- Char ***vp;
- bool ignore;
-{
- Char *p1, *p2;
- int i;
-
- p1 = exp3a(vp, ignore);
-#ifdef EDEBUG
- etracc("exp3 p1", p1, vp);
-#endif
- if ((i = isa(**vp, RELOP)) != 0) {
- (*vp)++;
- if (**vp && eq(**vp, STRequal))
- i |= 1, (*vp)++;
- p2 = exp3(vp, ignore);
-#ifdef EDEBUG
- etracc("exp3 p2", p2, vp);
-#endif
- if (!(ignore & IGNORE))
- switch (i) {
-
- case GTR:
- i = egetn(p1) > egetn(p2);
- break;
-
- case GTR | 1:
- i = egetn(p1) >= egetn(p2);
- break;
-
- case LSS:
- i = egetn(p1) < egetn(p2);
- break;
-
- case LSS | 1:
- i = egetn(p1) <= egetn(p2);
- break;
- }
- xfree((ptr_t) p1);
- xfree((ptr_t) p2);
- return (putn(i));
- }
- return (p1);
-}
-
-static Char *
-exp3a(vp, ignore)
- Char ***vp;
- bool ignore;
-{
- Char *p1, *p2, *op;
- int i;
-
- p1 = exp4(vp, ignore);
-#ifdef EDEBUG
- etracc("exp3a p1", p1, vp);
-#endif
- op = **vp;
- if (op && any("<>", op[0]) && op[0] == op[1]) {
- (*vp)++;
- p2 = exp3a(vp, ignore);
-#ifdef EDEBUG
- etracc("exp3a p2", p2, vp);
-#endif
- if (op[0] == '<')
- i = egetn(p1) << egetn(p2);
- else
- i = egetn(p1) >> egetn(p2);
- xfree((ptr_t) p1);
- xfree((ptr_t) p2);
- return (putn(i));
- }
- return (p1);
-}
-
-static Char *
-exp4(vp, ignore)
- Char ***vp;
- bool ignore;
-{
- Char *p1, *p2;
- int i = 0;
-
- p1 = exp5(vp, ignore);
-#ifdef EDEBUG
- etracc("exp4 p1", p1, vp);
-#endif
- if (isa(**vp, ADDOP)) {
- Char *op = *(*vp)++;
-
- p2 = exp4(vp, ignore);
-#ifdef EDEBUG
- etracc("exp4 p2", p2, vp);
-#endif
- if (!(ignore & IGNORE))
- switch (op[0]) {
-
- case '+':
- i = egetn(p1) + egetn(p2);
- break;
-
- case '-':
- i = egetn(p1) - egetn(p2);
- break;
- }
- xfree((ptr_t) p1);
- xfree((ptr_t) p2);
- return (putn(i));
- }
- return (p1);
-}
-
-static Char *
-exp5(vp, ignore)
- Char ***vp;
- bool ignore;
-{
- Char *p1, *p2;
- int i = 0;
-
- p1 = exp6(vp, ignore);
-#ifdef EDEBUG
- etracc("exp5 p1", p1, vp);
-#endif
- if (isa(**vp, MULOP)) {
- Char *op = *(*vp)++;
-
- p2 = exp5(vp, ignore);
-#ifdef EDEBUG
- etracc("exp5 p2", p2, vp);
-#endif
- if (!(ignore & IGNORE))
- switch (op[0]) {
-
- case '*':
- i = egetn(p1) * egetn(p2);
- break;
-
- case '/':
- i = egetn(p2);
- if (i == 0)
- stderror(ERR_DIV0);
- i = egetn(p1) / i;
- break;
-
- case '%':
- i = egetn(p2);
- if (i == 0)
- stderror(ERR_MOD0);
- i = egetn(p1) % i;
- break;
- }
- xfree((ptr_t) p1);
- xfree((ptr_t) p2);
- return (putn(i));
- }
- return (p1);
-}
-
-static Char *
-exp6(vp, ignore)
- Char ***vp;
- bool ignore;
-{
- int ccode, i = 0;
- Char *cp, *dp, *ep;
-
- if (**vp == 0)
- stderror(ERR_NAME | ERR_EXPRESSION);
- if (eq(**vp, STRbang)) {
- (*vp)++;
- cp = exp6(vp, ignore);
-#ifdef EDEBUG
- etracc("exp6 ! cp", cp, vp);
-#endif
- i = egetn(cp);
- xfree((ptr_t) cp);
- return (putn(!i));
- }
- if (eq(**vp, STRtilde)) {
- (*vp)++;
- cp = exp6(vp, ignore);
-#ifdef EDEBUG
- etracc("exp6 ~ cp", cp, vp);
-#endif
- i = egetn(cp);
- xfree((ptr_t) cp);
- return (putn(~i));
- }
- if (eq(**vp, STRLparen)) {
- (*vp)++;
- ccode = exp0(vp, ignore);
-#ifdef EDEBUG
- etraci("exp6 () ccode", ccode, vp);
-#endif
- if (*vp == 0 || **vp == 0 || ***vp != ')')
- stderror(ERR_NAME | ERR_EXPRESSION);
- (*vp)++;
- return (putn(ccode));
- }
- if (eq(**vp, STRLbrace)) {
- Char **v;
- struct command faket;
- Char *fakecom[2];
-
- faket.t_dtyp = NODE_COMMAND;
- faket.t_dflg = 0;
- faket.t_dcar = faket.t_dcdr = faket.t_dspr = NULL;
- faket.t_dcom = fakecom;
- fakecom[0] = STRfakecom;
- fakecom[1] = NULL;
- (*vp)++;
- v = *vp;
- for (;;) {
- if (!**vp)
- stderror(ERR_NAME | ERR_MISSING, '}');
- if (eq(*(*vp)++, STRRbrace))
- break;
- }
- if (ignore & IGNORE)
- return (Strsave(STRNULL));
- psavejob();
- if (pfork(&faket, -1) == 0) {
- *--(*vp) = 0;
- evalav(v);
- exitstat();
- }
- pwait();
- prestjob();
-#ifdef EDEBUG
- etraci("exp6 {} status", egetn(value(STRstatus)), vp);
-#endif
- return (putn(egetn(value(STRstatus)) == 0));
- }
- if (isa(**vp, ANYOP))
- return (Strsave(STRNULL));
- cp = *(*vp)++;
- if (*cp == '-' && any("erwxfdzopls", cp[1])) {
- struct stat stb;
-
- if (cp[2] != '\0')
- stderror(ERR_NAME | ERR_FILEINQ);
- /*
- * Detect missing file names by checking for operator in the file name
- * position. However, if an operator name appears there, we must make
- * sure that there's no file by that name (e.g., "/") before announcing
- * an error. Even this check isn't quite right, since it doesn't take
- * globbing into account.
- */
- if (isa(**vp, ANYOP) && stat(short2str(**vp), &stb))
- stderror(ERR_NAME | ERR_FILENAME);
-
- dp = *(*vp)++;
- if (ignore & IGNORE)
- return (Strsave(STRNULL));
- ep = globone(dp, G_ERROR);
- switch (cp[1]) {
-
- case 'r':
- i = !access(short2str(ep), R_OK);
- break;
-
- case 'w':
- i = !access(short2str(ep), W_OK);
- break;
-
- case 'x':
- i = !access(short2str(ep), X_OK);
- break;
-
- default:
- if (
-#ifdef S_IFLNK
- cp[1] == 'l' ? lstat(short2str(ep), &stb) :
-#endif
- stat(short2str(ep), &stb)) {
- xfree((ptr_t) ep);
- return (Strsave(STR0));
- }
- switch (cp[1]) {
-
- case 'f':
- i = S_ISREG(stb.st_mode);
- break;
-
- case 'd':
- i = S_ISDIR(stb.st_mode);
- break;
-
- case 'p':
-#ifdef S_ISFIFO
- i = S_ISFIFO(stb.st_mode);
-#else
- i = 0;
-#endif
- break;
-
- case 'l':
-#ifdef S_ISLNK
- i = S_ISLNK(stb.st_mode);
-#else
- i = 0;
-#endif
- break;
-
- case 's':
-#ifdef S_ISSOCK
- i = S_ISSOCK(stb.st_mode);
-#else
- i = 0;
-#endif
- break;
-
- case 'z':
- i = stb.st_size == 0;
- break;
-
- case 'e':
- i = 1;
- break;
-
- case 'o':
- i = stb.st_uid == uid;
- break;
- }
- }
-#ifdef EDEBUG
- etraci("exp6 -? i", i, vp);
-#endif
- xfree((ptr_t) ep);
- return (putn(i));
- }
-#ifdef EDEBUG
- etracc("exp6 default", cp, vp);
-#endif
- return (ignore & NOGLOB ? Strsave(cp) : globone(cp, G_ERROR));
-}
-
-static void
-evalav(v)
- Char **v;
-{
- struct wordent paraml1;
- struct wordent *hp = &paraml1;
- struct command *t;
- struct wordent *wdp = hp;
-
- set(STRstatus, Strsave(STR0));
- hp->prev = hp->next = hp;
- hp->word = STRNULL;
- while (*v) {
- struct wordent *new =
- (struct wordent *) xcalloc(1, sizeof *wdp);
-
- new->prev = wdp;
- new->next = hp;
- wdp->next = new;
- wdp = new;
- wdp->word = Strsave(*v++);
- }
- hp->prev = wdp;
- alias(&paraml1);
- t = syntax(paraml1.next, &paraml1, 0);
- if (seterr)
- stderror(ERR_OLD);
- execute(t, -1, NULL, NULL);
- freelex(&paraml1), freesyn(t);
-}
-
-static int
-isa(cp, what)
- Char *cp;
- int what;
-{
- if (cp == 0)
- return ((what & RESTOP) != 0);
- if (cp[1] == 0) {
- if (what & ADDOP && (*cp == '+' || *cp == '-'))
- return (1);
- if (what & MULOP && (*cp == '*' || *cp == '/' || *cp == '%'))
- return (1);
- if (what & RESTOP && (*cp == '(' || *cp == ')' || *cp == '!' ||
- *cp == '~' || *cp == '^' || *cp == '"'))
- return (1);
- }
- else if (cp[2] == 0) {
- if (what & RESTOP) {
- if (cp[0] == '|' && cp[1] == '&')
- return (1);
- if (cp[0] == '<' && cp[1] == '<')
- return (1);
- if (cp[0] == '>' && cp[1] == '>')
- return (1);
- }
- if (what & EQOP) {
- if (cp[0] == '=') {
- if (cp[1] == '=')
- return (EQEQ);
- if (cp[1] == '~')
- return (EQMATCH);
- }
- else if (cp[0] == '!') {
- if (cp[1] == '=')
- return (NOTEQ);
- if (cp[1] == '~')
- return (NOTEQMATCH);
- }
- }
- }
- if (what & RELOP) {
- if (*cp == '<')
- return (LSS);
- if (*cp == '>')
- return (GTR);
- }
- return (0);
-}
-
-static int
-egetn(cp)
- Char *cp;
-{
- if (*cp && *cp != '-' && !Isdigit(*cp))
- stderror(ERR_NAME | ERR_EXPRESSION);
- return (getn(cp));
-}
-
-/* Phew! */
-
-#ifdef EDEBUG
-static void
-etraci(str, i, vp)
- char *str;
- int i;
- Char ***vp;
-{
- (void) fprintf(csherr, "%s=%d\t", str, i);
- blkpr(csherr, *vp);
- (void) fprintf(csherr, "\n");
-}
-static void
-etracc(str, cp, vp)
- char *str;
- Char *cp;
- Char ***vp;
-{
- (void) fprintf(csherr, "%s=%s\t", str, vis_str(cp));
- blkpr(csherr, *vp);
- (void) fprintf(csherr, "\n");
-}
-#endif
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