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-rw-r--r--contrib/tcsh/sh.exp.c1005
1 files changed, 0 insertions, 1005 deletions
diff --git a/contrib/tcsh/sh.exp.c b/contrib/tcsh/sh.exp.c
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index e242676..0000000
--- a/contrib/tcsh/sh.exp.c
+++ /dev/null
@@ -1,1005 +0,0 @@
-/* $Header: /p/tcsh/cvsroot/tcsh/sh.exp.c,v 3.51 2006/05/13 21:25:20 christos Exp $ */
-/*
- * sh.exp.c: Expression evaluations
- */
-/*-
- * Copyright (c) 1980, 1991 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. 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.
- */
-#include "sh.h"
-
-RCSID("$tcsh: sh.exp.c,v 3.51 2006/05/13 21:25:20 christos Exp $")
-
-#include "tw.h"
-
-/*
- * C shell
- */
-
-#define TEXP_IGNORE 1 /* in ignore, it means to ignore value, just parse */
-#define TEXP_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 sh_access (const Char *, int);
-static int exp1 (Char ***, int);
-static int exp2x (Char ***, int);
-static int exp2a (Char ***, int);
-static int exp2b (Char ***, int);
-static int exp2c (Char ***, int);
-static Char *exp3 (Char ***, int);
-static Char *exp3a (Char ***, int);
-static Char *exp4 (Char ***, int);
-static Char *exp5 (Char ***, int);
-static Char *exp6 (Char ***, int);
-static void evalav (Char **);
-static int isa (Char *, int);
-static int egetn (Char *);
-
-
-#ifdef EDEBUG
-static void etracc (char *, Char *, Char ***);
-static void etraci (char *, int, Char ***);
-#else /* !EDEBUG */
-#define etracc(A, B, C) ((void)0)
-#define etraci(A, B, C) ((void)0)
-#endif /* !EDEBUG */
-
-
-/*
- * shell access function according to POSIX and non POSIX
- * From Beto Appleton (beto@aixwiz.aix.ibm.com)
- */
-static int
-sh_access(const Char *fname, int mode)
-{
-#if defined(POSIX) && !defined(USE_ACCESS)
- struct stat statb;
-#endif /* POSIX */
- char *name = short2str(fname);
-
- if (*name == '\0')
- return 1;
-
-#if !defined(POSIX) || defined(USE_ACCESS)
- return access(name, mode);
-#else /* POSIX */
-
- /*
- * POSIX 1003.2-d11.2
- * -r file True if file exists and is readable.
- * -w file True if file exists and is writable.
- * True shall indicate only that the write flag is on.
- * The file shall not be writable on a read-only file
- * system even if this test indicates true.
- * -x file True if file exists and is executable.
- * True shall indicate only that the execute flag is on.
- * If file is a directory, true indicates that the file
- * can be searched.
- */
- if (mode != W_OK && mode != X_OK)
- return access(name, mode);
-
- if (stat(name, &statb) == -1)
- return 1;
-
- if (access(name, mode) == 0) {
-#ifdef S_ISDIR
- if (S_ISDIR(statb.st_mode) && mode == X_OK)
- return 0;
-#endif /* S_ISDIR */
-
- /* root needs permission for someone */
- switch (mode) {
- case W_OK:
- mode = S_IWUSR | S_IWGRP | S_IWOTH;
- break;
- case X_OK:
- mode = S_IXUSR | S_IXGRP | S_IXOTH;
- break;
- default:
- abort();
- break;
- }
-
- }
-
- else if (euid == statb.st_uid)
- mode <<= 6;
-
- else if (egid == statb.st_gid)
- mode <<= 3;
-
-# ifdef NGROUPS_MAX
- else {
- /* you can be in several groups */
- long n;
- GETGROUPS_T *groups;
-
- /*
- * Try these things to find a positive maximum groups value:
- * 1) sysconf(_SC_NGROUPS_MAX)
- * 2) NGROUPS_MAX
- * 3) getgroups(0, unused)
- * Then allocate and scan the groups array if one of these worked.
- */
-# if defined (HAVE_SYSCONF) && defined (_SC_NGROUPS_MAX)
- if ((n = sysconf(_SC_NGROUPS_MAX)) == -1)
-# endif /* _SC_NGROUPS_MAX */
- n = NGROUPS_MAX;
- if (n <= 0)
- n = getgroups(0, (GETGROUPS_T *) NULL);
-
- if (n > 0) {
- groups = xmalloc(n * sizeof(*groups));
- n = getgroups((int) n, groups);
- while (--n >= 0)
- if (groups[n] == statb.st_gid) {
- mode <<= 3;
- break;
- }
- }
- }
-# endif /* NGROUPS_MAX */
-
- if (statb.st_mode & mode)
- return 0;
- else
- return 1;
-#endif /* !POSIX */
-}
-
-int
-expr(Char ***vp)
-{
- return (exp0(vp, 0));
-}
-
-int
-exp0(Char ***vp, int ignore)
-{
- int p1 = exp1(vp, ignore);
-
- etraci("exp0 p1", p1, vp);
- if (**vp && eq(**vp, STRor2)) {
- int p2;
-
- (*vp)++;
- p2 = exp0(vp, (ignore & TEXP_IGNORE) || p1);
- etraci("exp0 p2", p2, vp);
- return (p1 || p2);
- }
- return (p1);
-}
-
-static int
-exp1(Char ***vp, int ignore)
-{
- int p1 = exp2x(vp, ignore);
-
- etraci("exp1 p1", p1, vp);
- if (**vp && eq(**vp, STRand2)) {
- int p2;
-
- (*vp)++;
- p2 = exp1(vp, (ignore & TEXP_IGNORE) || !p1);
- etraci("exp1 p2", p2, vp);
- return (p1 && p2);
- }
- return (p1);
-}
-
-static int
-exp2x(Char ***vp, int ignore)
-{
- int p1 = exp2a(vp, ignore);
-
- etraci("exp3 p1", p1, vp);
- if (**vp && eq(**vp, STRor)) {
- int p2;
-
- (*vp)++;
- p2 = exp2x(vp, ignore);
- etraci("exp3 p2", p2, vp);
- return (p1 | p2);
- }
- return (p1);
-}
-
-static int
-exp2a(Char ***vp, int ignore)
-{
- int p1 = exp2b(vp, ignore);
-
- etraci("exp2a p1", p1, vp);
- if (**vp && eq(**vp, STRcaret)) {
- int p2;
-
- (*vp)++;
- p2 = exp2a(vp, ignore);
- etraci("exp2a p2", p2, vp);
- return (p1 ^ p2);
- }
- return (p1);
-}
-
-static int
-exp2b(Char ***vp, int ignore)
-{
- int p1 = exp2c(vp, ignore);
-
- etraci("exp2b p1", p1, vp);
- if (**vp && eq(**vp, STRand)) {
- int p2;
-
- (*vp)++;
- p2 = exp2b(vp, ignore);
- etraci("exp2b p2", p2, vp);
- return (p1 & p2);
- }
- return (p1);
-}
-
-static int
-exp2c(Char ***vp, int ignore)
-{
- Char *p1 = exp3(vp, ignore);
- Char *p2;
- int i;
-
- cleanup_push(p1, xfree);
- etracc("exp2c p1", p1, vp);
- if ((i = isa(**vp, EQOP)) != 0) {
- (*vp)++;
- if (i == EQMATCH || i == NOTEQMATCH)
- ignore |= TEXP_NOGLOB;
- p2 = exp3(vp, ignore);
- cleanup_push(p2, xfree);
- etracc("exp2c p2", p2, vp);
- if (!(ignore & TEXP_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;
- }
- cleanup_until(p1);
- return (i);
- }
- i = egetn(p1);
- cleanup_until(p1);
- return (i);
-}
-
-static Char *
-exp3(Char ***vp, int ignore)
-{
- Char *p1, *p2;
- int i;
-
- p1 = exp3a(vp, ignore);
- etracc("exp3 p1", p1, vp);
- if ((i = isa(**vp, RELOP)) != 0) {
- (*vp)++;
- if (**vp && eq(**vp, STRequal))
- i |= 1, (*vp)++;
- cleanup_push(p1, xfree);
- p2 = exp3(vp, ignore);
- cleanup_push(p2, xfree);
- etracc("exp3 p2", p2, vp);
- if (!(ignore & TEXP_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;
- }
- cleanup_until(p1);
- return (putn(i));
- }
- return (p1);
-}
-
-static Char *
-exp3a(Char ***vp, int ignore)
-{
- Char *p1, *p2;
- const Char *op;
- int i;
-
- p1 = exp4(vp, ignore);
- etracc("exp3a p1", p1, vp);
- op = **vp;
- if (op && any("<>", op[0]) && op[0] == op[1]) {
- (*vp)++;
- cleanup_push(p1, xfree);
- p2 = exp3a(vp, ignore);
- cleanup_push(p2, xfree);
- etracc("exp3a p2", p2, vp);
- if (op[0] == '<')
- i = egetn(p1) << egetn(p2);
- else
- i = egetn(p1) >> egetn(p2);
- cleanup_until(p1);
- return (putn(i));
- }
- return (p1);
-}
-
-static Char *
-exp4(Char ***vp, int ignore)
-{
- Char *p1, *p2;
- int i = 0;
-
- p1 = exp5(vp, ignore);
- etracc("exp4 p1", p1, vp);
- if (isa(**vp, ADDOP)) {
- const Char *op = *(*vp)++;
-
- cleanup_push(p1, xfree);
- p2 = exp4(vp, ignore);
- cleanup_push(p2, xfree);
- etracc("exp4 p2", p2, vp);
- if (!(ignore & TEXP_IGNORE))
- switch (op[0]) {
-
- case '+':
- i = egetn(p1) + egetn(p2);
- break;
-
- case '-':
- i = egetn(p1) - egetn(p2);
- break;
- }
- cleanup_until(p1);
- return (putn(i));
- }
- return (p1);
-}
-
-static Char *
-exp5(Char ***vp, int ignore)
-{
- Char *p1, *p2;
- int i = 0;
-
- p1 = exp6(vp, ignore);
- etracc("exp5 p1", p1, vp);
-
- if (isa(**vp, MULOP)) {
- const Char *op = *(*vp)++;
- if ((ignore & TEXP_NOGLOB) != 0) {
- /*
- * We are just trying to get the right side of
- * a =~ or !~ operator
- */
- xfree(p1);
- return Strsave(op);
- }
-
- cleanup_push(p1, xfree);
- p2 = exp5(vp, ignore);
- cleanup_push(p2, xfree);
- etracc("exp5 p2", p2, vp);
- if (!(ignore & TEXP_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;
- }
- cleanup_until(p1);
- return (putn(i));
- }
- return (p1);
-}
-
-static Char *
-exp6(Char ***vp, int ignore)
-{
- int ccode, i = 0;
- Char *cp;
-
- if (**vp == 0)
- stderror(ERR_NAME | ERR_EXPRESSION);
- if (eq(**vp, STRbang)) {
- (*vp)++;
- cp = exp6(vp, ignore);
- cleanup_push(cp, xfree);
- etracc("exp6 ! cp", cp, vp);
- i = egetn(cp);
- cleanup_until(cp);
- return (putn(!i));
- }
- if (eq(**vp, STRtilde)) {
- (*vp)++;
- cp = exp6(vp, ignore);
- cleanup_push(cp, xfree);
- etracc("exp6 ~ cp", cp, vp);
- i = egetn(cp);
- cleanup_until(cp);
- return (putn(~i));
- }
- if (eq(**vp, STRLparen)) {
- (*vp)++;
- ccode = exp0(vp, ignore);
- etraci("exp6 () ccode", ccode, vp);
- if (**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 = F_BACKQ;
- 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 & TEXP_IGNORE)
- return (Strsave(STRNULL));
- psavejob();
- cleanup_push(&faket, psavejob_cleanup); /* faket is only a marker */
- if (pfork(&faket, -1) == 0) {
- *--(*vp) = 0;
- evalav(v);
- exitstat();
- }
- pwait();
- cleanup_until(&faket);
- etraci("exp6 {} status", egetn(varval(STRstatus)), vp);
- return (putn(egetn(varval(STRstatus)) == 0));
- }
- if (isa(**vp, ANYOP))
- return (Strsave(STRNULL));
- cp = *(*vp)++;
-#ifdef convex
-# define FILETESTS "erwxfdzoplstSXLbcugkmKR"
-#else
-# define FILETESTS "erwxfdzoplstSXLbcugkmK"
-#endif /* convex */
-#define FILEVALS "ZAMCDIUGNFPL"
- if (*cp == '-' && (any(FILETESTS, cp[1]) || any(FILEVALS, cp[1])))
- return(filetest(cp, vp, ignore));
- etracc("exp6 default", cp, vp);
- return (ignore & TEXP_NOGLOB ? Strsave(cp) : globone(cp, G_APPEND));
-}
-
-
-/*
- * Extended file tests
- * From: John Rowe <rowe@excc.exeter.ac.uk>
- */
-Char *
-filetest(Char *cp, Char ***vp, int ignore)
-{
-#ifdef convex
- struct cvxstat stb, *st = NULL;
-# define TCSH_STAT stat64
-#else
-# define TCSH_STAT stat
- struct stat stb, *st = NULL;
-#endif /* convex */
-
-#ifdef S_IFLNK
-# ifdef convex
- struct cvxstat lstb, *lst = NULL;
-# define TCSH_LSTAT lstat64
-# else
-# define TCSH_LSTAT lstat
- struct stat lstb, *lst = NULL;
-# endif /* convex */
- char *filnam;
-#endif /* S_IFLNK */
-
- int i = 0;
- unsigned pmask = 0xffff;
- int altout = 0;
- Char *ft = cp, *dp, *ep, *strdev, *strino, *strF, *str, valtest = '\0',
- *errval = STR0;
- char *string, string0[8];
- time_t footime;
- struct passwd *pw;
- struct group *gr;
-
- while(any(FILETESTS, *++ft))
- continue;
-
- if (!*ft && *(ft - 1) == 'L')
- --ft;
-
- if (any(FILEVALS, *ft)) {
- valtest = *ft++;
- /*
- * Value tests return '-1' on failure as 0 is
- * a legitimate value for many of them.
- * 'F' returns ':' for compatibility.
- */
- errval = valtest == 'F' ? STRcolon : STRminus1;
-
- if (valtest == 'P' && *ft >= '0' && *ft <= '7') {
- pmask = (char) *ft - '0';
- while ( *++ft >= '0' && *ft <= '7' )
- pmask = 8 * pmask + ((char) *ft - '0');
- }
- if (Strcmp(ft, STRcolon) == 0 && any("AMCUGP", valtest)) {
- altout = 1;
- ++ft;
- }
- }
-
- if (*ft || ft == cp + 1)
- 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) && TCSH_STAT(short2str(**vp), &stb))
- stderror(ERR_NAME | ERR_FILENAME);
-
- dp = *(*vp)++;
- if (ignore & TEXP_IGNORE)
- return (Strsave(STRNULL));
- ep = globone(dp, G_APPEND);
- cleanup_push(ep, xfree);
- ft = &cp[1];
- do
- switch (*ft) {
-
- case 'r':
- i = !sh_access(ep, R_OK);
- break;
-
- case 'w':
- i = !sh_access(ep, W_OK);
- break;
-
- case 'x':
- i = !sh_access(ep, X_OK);
- break;
-
- case 'X': /* tcsh extension, name is an executable in the path
- * or a tcsh builtin command
- */
- i = find_cmd(ep, 0);
- break;
-
- case 't': /* SGI extension, true when file is a tty */
- i = isatty(atoi(short2str(ep)));
- break;
-
- default:
-
-#ifdef S_IFLNK
- if (tolower(*ft) == 'l') {
- /*
- * avoid convex compiler bug.
- */
- if (!lst) {
- lst = &lstb;
- if (TCSH_LSTAT(short2str(ep), lst) == -1) {
- cleanup_until(ep);
- return (Strsave(errval));
- }
- }
- if (*ft == 'L')
- st = lst;
- }
- else
-#endif /* S_IFLNK */
- /*
- * avoid convex compiler bug.
- */
- if (!st) {
- st = &stb;
- if (TCSH_STAT(short2str(ep), st) == -1) {
- cleanup_until(ep);
- return (Strsave(errval));
- }
- }
-
- switch (*ft) {
-
- case 'f':
-#ifdef S_ISREG
- i = S_ISREG(st->st_mode);
-#else /* !S_ISREG */
- i = 0;
-#endif /* S_ISREG */
- break;
-
- case 'd':
-#ifdef S_ISDIR
- i = S_ISDIR(st->st_mode);
-#else /* !S_ISDIR */
- i = 0;
-#endif /* S_ISDIR */
- break;
-
- case 'p':
-#ifdef S_ISFIFO
- i = S_ISFIFO(st->st_mode);
-#else /* !S_ISFIFO */
- i = 0;
-#endif /* S_ISFIFO */
- break;
-
- case 'm' :
-#ifdef S_ISOFL
- i = S_ISOFL(st->st_dm_mode);
-#else /* !S_ISOFL */
- i = 0;
-#endif /* S_ISOFL */
- break ;
-
- case 'K' :
-#ifdef S_ISOFL
- i = stb.st_dm_key;
-#else /* !S_ISOFL */
- i = 0;
-#endif /* S_ISOFL */
- break ;
-
-
- case 'l':
-#ifdef S_ISLNK
- i = S_ISLNK(lst->st_mode);
-#else /* !S_ISLNK */
- i = 0;
-#endif /* S_ISLNK */
- break;
-
- case 'S':
-# ifdef S_ISSOCK
- i = S_ISSOCK(st->st_mode);
-# else /* !S_ISSOCK */
- i = 0;
-# endif /* S_ISSOCK */
- break;
-
- case 'b':
-#ifdef S_ISBLK
- i = S_ISBLK(st->st_mode);
-#else /* !S_ISBLK */
- i = 0;
-#endif /* S_ISBLK */
- break;
-
- case 'c':
-#ifdef S_ISCHR
- i = S_ISCHR(st->st_mode);
-#else /* !S_ISCHR */
- i = 0;
-#endif /* S_ISCHR */
- break;
-
- case 'u':
- i = (S_ISUID & st->st_mode) != 0;
- break;
-
- case 'g':
- i = (S_ISGID & st->st_mode) != 0;
- break;
-
- case 'k':
- i = (S_ISVTX & st->st_mode) != 0;
- break;
-
- case 'z':
- i = st->st_size == 0;
- break;
-
-#ifdef convex
- case 'R':
- i = (stb.st_dmonflags & IMIGRATED) == IMIGRATED;
- break;
-#endif /* convex */
-
- case 's':
- i = stb.st_size != 0;
- break;
-
- case 'e':
- i = 1;
- break;
-
- case 'o':
- i = st->st_uid == uid;
- break;
-
- /*
- * Value operators are a tcsh extension.
- */
-
- case 'D':
- i = (int) st->st_dev;
- break;
-
- case 'I':
- i = (int) st->st_ino;
- break;
-
- case 'F':
- strdev = putn( (int) st->st_dev);
- strino = putn( (int) st->st_ino);
- strF = xmalloc((2 + Strlen(strdev) + Strlen(strino))
- * sizeof(Char));
- (void) Strcat(Strcat(Strcpy(strF, strdev), STRcolon), strino);
- xfree(strdev);
- xfree(strino);
- cleanup_until(ep);
- return(strF);
-
- case 'L':
- if ( *(ft + 1) ) {
- i = 1;
- break;
- }
-#ifdef S_ISLNK
- filnam = short2str(ep);
- string = areadlink(filnam);
- strF = string == NULL ? errval : str2short(string);
- xfree(string);
- cleanup_until(ep);
- return(Strsave(strF));
-
-#else /* !S_ISLNK */
- i = 0;
- break;
-#endif /* S_ISLNK */
-
-
- case 'N':
- i = (int) st->st_nlink;
- break;
-
- case 'P':
- string = string0 + 1;
- (void) xsnprintf(string, sizeof(string0) - 1, "%o",
- pmask & (unsigned int)
- ((S_IRWXU|S_IRWXG|S_IRWXO|S_ISUID|S_ISGID) & st->st_mode));
- if (altout && *string != '0')
- *--string = '0';
- cleanup_until(ep);
- return(Strsave(str2short(string)));
-
- case 'U':
- if (altout && (pw = xgetpwuid(st->st_uid))) {
- cleanup_until(ep);
- return(Strsave(str2short(pw->pw_name)));
- }
- i = (int) st->st_uid;
- break;
-
- case 'G':
- if (altout && (gr = xgetgrgid(st->st_gid))) {
- cleanup_until(ep);
- return(Strsave(str2short(gr->gr_name)));
- }
- i = (int) st->st_gid;
- break;
-
- case 'Z':
- i = (int) st->st_size;
- break;
-
- case 'A': case 'M': case 'C':
- footime = *ft == 'A' ? st->st_atime :
- *ft == 'M' ? st->st_mtime : st->st_ctime;
- if (altout) {
- strF = str2short(ctime(&footime));
- if ((str = Strchr(strF, '\n')) != NULL)
- *str = (Char) '\0';
- cleanup_until(ep);
- return(Strsave(strF));
- }
- i = (int) footime;
- break;
-
- }
- }
- while (*++ft && i);
- etraci("exp6 -? i", i, vp);
- cleanup_until(ep);
- return (putn(i));
-}
-
-
-static void
-evalav(Char **v)
-{
- struct wordent paraml1;
- struct wordent *hp = &paraml1;
- struct command *t;
- struct wordent *wdp = hp;
-
- setcopy(STRstatus, STR0, VAR_READWRITE);
- hp->prev = hp->next = hp;
- hp->word = STRNULL;
- while (*v) {
- struct wordent *new = xcalloc(1, sizeof *wdp);
-
- new->prev = wdp;
- new->next = hp;
- wdp->next = new;
- wdp = new;
- wdp->word = Strsave(*v++);
- }
- hp->prev = wdp;
- cleanup_push(&paraml1, lex_cleanup);
- alias(&paraml1);
- t = syntax(paraml1.next, &paraml1, 0);
- cleanup_push(t, syntax_cleanup);
- if (seterr)
- stderror(ERR_OLD);
- execute(t, -1, NULL, NULL, TRUE);
- cleanup_until(&paraml1);
-}
-
-static int
-isa(Char *cp, int what)
-{
- if (cp == 0)
- return ((what & RESTOP) != 0);
- if (*cp == '\0')
- return 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(Char *cp)
-{
- if (*cp && *cp != '-' && !Isdigit(*cp))
- stderror(ERR_NAME | ERR_EXPRESSION);
- return (getn(cp));
-}
-
-/* Phew! */
-
-#ifdef EDEBUG
-static void
-etraci(char *str, int i, Char ***vp)
-{
- xprintf("%s=%d\t", str, i);
- blkpr(*vp);
- xputchar('\n');
-}
-static void
-etracc(char *str, Char *cp, Char ***vp)
-{
- xprintf("%s=%s\t", str, cp);
- blkpr(*vp);
- xputchar('\n');
-}
-#endif /* EDEBUG */
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