-static char *sccsid = "@(#)exp.c 4.1 %G%";
+/*-
+ * 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. 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.
+ */
-#include "sh.h"
+#ifndef lint
+static char sccsid[] = "@(#)exp.c 5.11 (Berkeley) 6/8/91";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <unistd.h>
+#if __STDC__
+# include <stdarg.h>
+#else
+# include <varargs.h>
+#endif
-/*
- * C shell
- */
+#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 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
exp(vp)
- register char ***vp;
+ register Char ***vp;
{
-
- return (exp0(vp, 0));
+ return (exp0(vp, 0));
}
+int
exp0(vp, ignore)
- register char ***vp;
- bool ignore;
+ register Char ***vp;
+ bool ignore;
{
- register int p1 = exp1(vp, ignore);
-
+ register int p1 = exp1(vp, ignore);
+
#ifdef EDEBUG
- etraci("exp0 p1", p1, vp);
+ etraci("exp0 p1", p1, vp);
#endif
- if (**vp && eq(**vp, "||")) {
- register int p2;
+ if (**vp && eq(**vp, STRor2)) {
+ register int p2;
- (*vp)++;
- p2 = exp0(vp, (ignore&IGNORE) || p1);
+ (*vp)++;
+ p2 = exp0(vp, (ignore & IGNORE) || p1);
#ifdef EDEBUG
- etraci("exp0 p2", p2, vp);
+ etraci("exp0 p2", p2, vp);
#endif
- return (p1 || p2);
- }
- return (p1);
+ return (p1 || p2);
+ }
+ return (p1);
}
+static int
exp1(vp, ignore)
- register char ***vp;
+ register Char ***vp;
+ bool ignore;
{
- register int p1 = exp2(vp, ignore);
+ register int p1 = exp2(vp, ignore);
#ifdef EDEBUG
- etraci("exp1 p1", p1, vp);
+ etraci("exp1 p1", p1, vp);
#endif
- if (**vp && eq(**vp, "&&")) {
- register int p2;
+ if (**vp && eq(**vp, STRand2)) {
+ register int p2;
- (*vp)++;
- p2 = exp1(vp, (ignore&IGNORE) || !p1);
+ (*vp)++;
+ p2 = exp1(vp, (ignore & IGNORE) || !p1);
#ifdef EDEBUG
- etraci("exp1 p2", p2, vp);
+ etraci("exp1 p2", p2, vp);
#endif
- return (p1 && p2);
- }
- return (p1);
+ return (p1 && p2);
+ }
+ return (p1);
}
+static int
exp2(vp, ignore)
- register char ***vp;
- bool ignore;
+ register Char ***vp;
+ bool ignore;
{
- register int p1 = exp2a(vp, ignore);
+ register int p1 = exp2a(vp, ignore);
#ifdef EDEBUG
- etraci("exp3 p1", p1, vp);
+ etraci("exp3 p1", p1, vp);
#endif
- if (**vp && eq(**vp, "|")) {
- register int p2;
+ if (**vp && eq(**vp, STRor)) {
+ register int p2;
- (*vp)++;
- p2 = exp2(vp, ignore);
+ (*vp)++;
+ p2 = exp2(vp, ignore);
#ifdef EDEBUG
- etraci("exp3 p2", p2, vp);
+ etraci("exp3 p2", p2, vp);
#endif
- return (p1 | p2);
- }
- return (p1);
+ return (p1 | p2);
+ }
+ return (p1);
}
+static int
exp2a(vp, ignore)
- register char ***vp;
- bool ignore;
+ register Char ***vp;
+ bool ignore;
{
- register int p1 = exp2b(vp, ignore);
+ register int p1 = exp2b(vp, ignore);
#ifdef EDEBUG
- etraci("exp2a p1", p1, vp);
+ etraci("exp2a p1", p1, vp);
#endif
- if (**vp && eq(**vp, "^")) {
- register int p2;
+ if (**vp && eq(**vp, STRcaret)) {
+ register int p2;
- (*vp)++;
- p2 = exp2a(vp, ignore);
+ (*vp)++;
+ p2 = exp2a(vp, ignore);
#ifdef EDEBUG
- etraci("exp2a p2", p2, vp);
+ etraci("exp2a p2", p2, vp);
#endif
- return (p1 ^ p2);
- }
- return (p1);
+ return (p1 ^ p2);
+ }
+ return (p1);
}
+static int
exp2b(vp, ignore)
- register char ***vp;
- bool ignore;
+ register Char ***vp;
+ bool ignore;
{
- register int p1 = exp2c(vp, ignore);
+ register int p1 = exp2c(vp, ignore);
#ifdef EDEBUG
- etraci("exp2b p1", p1, vp);
+ etraci("exp2b p1", p1, vp);
#endif
- if (**vp && eq(**vp, "&")) {
- register int p2;
+ if (**vp && eq(**vp, STRand)) {
+ register int p2;
- (*vp)++;
- p2 = exp2b(vp, ignore);
+ (*vp)++;
+ p2 = exp2b(vp, ignore);
#ifdef EDEBUG
- etraci("exp2b p2", p2, vp);
+ etraci("exp2b p2", p2, vp);
#endif
- return (p1 & p2);
- }
- return (p1);
+ return (p1 & p2);
+ }
+ return (p1);
}
+static int
exp2c(vp, ignore)
- register char ***vp;
- bool ignore;
+ register Char ***vp;
+ bool ignore;
{
- register char *p1 = exp3(vp, ignore);
- register char *p2;
- register int i;
+ register Char *p1 = exp3(vp, ignore);
+ register Char *p2;
+ register int i;
#ifdef EDEBUG
- etracc("exp2c p1", p1, vp);
+ etracc("exp2c p1", p1, vp);
#endif
- if (i = isa(**vp, EQOP)) {
- (*vp)++;
- if (i == EQMATCH || i == NOTEQMATCH)
- ignore |= NOGLOB;
- p2 = exp3(vp, ignore);
+ if (i = isa(**vp, EQOP)) {
+ (*vp)++;
+ if (i == EQMATCH || i == NOTEQMATCH)
+ ignore |= NOGLOB;
+ p2 = exp3(vp, ignore);
#ifdef EDEBUG
- etracc("exp2c p2", p2, vp);
+ 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(p1), xfree(p2);
- return (i);
- }
- i = egetn(p1);
- xfree(p1);
+ 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);
}
-char *
+static Char *
exp3(vp, ignore)
- register char ***vp;
- bool ignore;
+ register Char ***vp;
+ bool ignore;
{
- register char *p1, *p2;
- register int i;
+ register Char *p1, *p2;
+ register int i;
- p1 = exp3a(vp, ignore);
+ p1 = exp3a(vp, ignore);
#ifdef EDEBUG
- etracc("exp3 p1", p1, vp);
+ etracc("exp3 p1", p1, vp);
#endif
- if (i = isa(**vp, RELOP)) {
- (*vp)++;
- if (**vp && eq(**vp, "="))
- i |= 1, (*vp)++;
- p2 = exp3(vp, ignore);
+ if (i = isa(**vp, RELOP)) {
+ (*vp)++;
+ if (**vp && eq(**vp, STRequal))
+ i |= 1, (*vp)++;
+ p2 = exp3(vp, ignore);
#ifdef EDEBUG
- etracc("exp3 p2", p2, vp);
+ 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(p1), xfree(p2);
- return (putn(i));
- }
- return (p1);
+ 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);
}
-char *
+static Char *
exp3a(vp, ignore)
- register char ***vp;
- bool ignore;
+ register Char ***vp;
+ bool ignore;
{
- register char *p1, *p2, *op;
- register int i;
+ register Char *p1, *p2, *op;
+ register int i;
- p1 = exp4(vp, ignore);
+ p1 = exp4(vp, ignore);
#ifdef EDEBUG
- etracc("exp3a p1", p1, vp);
+ etracc("exp3a p1", p1, vp);
#endif
- op = **vp;
- if (op && any(op[0], "<>") && op[0] == op[1]) {
- (*vp)++;
- p2 = exp3a(vp, ignore);
+ 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(p1), xfree(p2);
- return (putn(i));
- }
- return (p1);
+ 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);
}
-char *
+static Char *
exp4(vp, ignore)
- register char ***vp;
- bool ignore;
+ register Char ***vp;
+ bool ignore;
{
- register char *p1, *p2;
- register int i = 0;
+ register Char *p1, *p2;
+ register int i = 0;
- p1 = exp5(vp, ignore);
+ p1 = exp5(vp, ignore);
#ifdef EDEBUG
- etracc("exp4 p1", p1, vp);
+ etracc("exp4 p1", p1, vp);
#endif
- if (isa(**vp, ADDOP)) {
- register char *op = *(*vp)++;
+ if (isa(**vp, ADDOP)) {
+ register Char *op = *(*vp)++;
- p2 = exp4(vp, ignore);
+ p2 = exp4(vp, ignore);
#ifdef EDEBUG
- etracc("exp4 p2", p2, vp);
+ 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(p1), xfree(p2);
- return (putn(i));
- }
- return (p1);
+ 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);
}
-char *
+static Char *
exp5(vp, ignore)
- register char ***vp;
- bool ignore;
+ register Char ***vp;
+ bool ignore;
{
- register char *p1, *p2;
- register int i = 0;
+ register Char *p1, *p2;
+ register int i = 0;
- p1 = exp6(vp, ignore);
+ p1 = exp6(vp, ignore);
#ifdef EDEBUG
- etracc("exp5 p1", p1, vp);
+ etracc("exp5 p1", p1, vp);
#endif
- if (isa(**vp, MULOP)) {
- register char *op = *(*vp)++;
+ if (isa(**vp, MULOP)) {
+ register Char *op = *(*vp)++;
- p2 = exp5(vp, ignore);
+ 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)
- error("Divide by 0");
- i = egetn(p1) / i;
- break;
-
- case '%':
- i = egetn(p2);
- if (i == 0)
- error("Mod by 0");
- i = egetn(p1) % i;
- break;
- }
- xfree(p1), xfree(p2);
- return (putn(i));
- }
- return (p1);
+ 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);
}
-char *
+static Char *
exp6(vp, ignore)
- register char ***vp;
+ register Char ***vp;
+ bool ignore;
{
- int ccode, i;
- register char *cp, *dp, *ep;
-
- if (eq(**vp, "!")) {
- (*vp)++;
- cp = exp6(vp, ignore);
+ int ccode, i = 0;
+ register 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);
+ etracc("exp6 ! cp", cp, vp);
#endif
- i = egetn(cp);
- xfree(cp);
- return (putn(!i));
- }
- if (eq(**vp, "~")) {
- (*vp)++;
- cp = exp6(vp, ignore);
+ 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);
+ etracc("exp6 ~ cp", cp, vp);
#endif
- i = egetn(cp);
- xfree(cp);
- return (putn(~i));
- }
- if (eq(**vp, "(")) {
- (*vp)++;
- ccode = exp0(vp, ignore);
+ 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);
+ etraci("exp6 () ccode", ccode, vp);
#endif
- if (*vp == 0 || **vp == 0 || ***vp != ')')
- bferr("Expression syntax");
- (*vp)++;
- return (putn(ccode));
+ if (*vp == 0 || **vp == 0 || ***vp != ')')
+ stderror(ERR_NAME | ERR_EXPRESSION);
+ (*vp)++;
+ return (putn(ccode));
+ }
+ if (eq(**vp, STRLbrace)) {
+ register 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();
}
- if (eq(**vp, "{")) {
- register char **v;
- struct command faket;
- char *fakecom[2];
-
- faket.t_dtyp = TCOM;
- faket.t_dflg = 0;
- faket.t_dcar = faket.t_dcdr = faket.t_dspr = (struct command *)0;
- faket.t_dcom = fakecom;
- fakecom[0] = "{ ... }";
- fakecom[1] = NOSTR;
- (*vp)++;
- v = *vp;
- for (;;) {
- if (!**vp)
- bferr("Missing }");
- if (eq(*(*vp)++, "}"))
- break;
- }
- if (ignore&IGNORE)
- return ("");
- psavejob();
- if (pfork(&faket, -1) == 0) {
- *--(*vp) = 0;
- evalav(v);
- exitstat();
- }
- pwait();
- prestjob();
+ pwait();
+ prestjob();
#ifdef EDEBUG
- etraci("exp6 {} status", egetn(value("status")), vp);
+ etraci("exp6 {} status", egetn(value(STRstatus)), vp);
#endif
- return (putn(egetn(value("status")) == 0));
+ 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;
+ }
}
- if (isa(**vp, ANYOP))
- return ("");
- cp = *(*vp)++;
- if (*cp == '-' && any(cp[1], "erwxfdzo")) {
- struct stat stb;
-
- if (isa(**vp, ANYOP))
- bferr("Missing file name");
- dp = *(*vp)++;
- if (ignore&IGNORE)
- return ("");
- ep = globone(dp);
- switch (cp[1]) {
-
- case 'r':
- i = !access(ep, 4);
- break;
-
- case 'w':
- i = !access(ep, 2);
- break;
-
- case 'x':
- i = !access(ep, 1);
- break;
-
- default:
- if (stat(ep, &stb)) {
- xfree(ep);
- return ("0");
- }
- switch (cp[1]) {
-
- case 'f':
- i = (stb.st_mode & S_IFMT) == S_IFREG;
- break;
-
- case 'd':
- i = (stb.st_mode & S_IFMT) == S_IFDIR;
- 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);
+ etraci("exp6 -? i", i, vp);
#endif
- xfree(ep);
- return (putn(i));
- }
+ xfree((ptr_t) ep);
+ return (putn(i));
+ }
#ifdef EDEBUG
- etracc("exp6 default", cp, vp);
+ etracc("exp6 default", cp, vp);
#endif
- return (ignore&NOGLOB ? cp : globone(cp));
+ return (ignore & NOGLOB ? Strsave(cp) : globone(cp, G_ERROR));
}
+static void
evalav(v)
- register char **v;
+ register Char **v;
{
- struct wordent paraml;
- register struct wordent *hp = ¶ml;
- struct command *t;
- register struct wordent *wdp = hp;
-
- set("status", "0");
- hp->prev = hp->next = hp;
- hp->word = "";
- while (*v) {
- register struct wordent *new = (struct wordent *) calloc(1, sizeof *wdp);
-
- new->prev = wdp;
- new->next = hp;
- wdp->next = new;
- wdp = new;
- wdp->word = savestr(*v++);
- }
- hp->prev = wdp;
- alias(¶ml);
- t = syntax(paraml.next, ¶ml, 0);
- if (err)
- error(err);
- execute(t, -1);
- freelex(¶ml), freesyn(t);
+ struct wordent paraml1;
+ register struct wordent *hp = ¶ml1;
+ struct command *t;
+ register struct wordent *wdp = hp;
+
+ set(STRstatus, Strsave(STR0));
+ hp->prev = hp->next = hp;
+ hp->word = STRNULL;
+ while (*v) {
+ register 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(¶ml1);
+ t = syntax(paraml1.next, ¶ml1, 0);
+ if (seterr)
+ stderror(ERR_OLD);
+ execute(t, -1, NULL, NULL);
+ freelex(¶ml1), freesyn(t);
}
+static int
isa(cp, what)
- register char *cp;
- register int what;
+ register Char *cp;
+ register int what;
{
-
- if (cp == 0)
- return ((what & RESTOP) != 0);
- if (cp[1] == 0) {
- if ((what & ADDOP) && any(cp[0], "+-"))
- return (1);
- if ((what & MULOP) && any(cp[0], "*/%"))
- return (1);
- if ((what & RESTOP) && any(cp[0], "()!~^"))
- return (1);
- }
- if ((what & RESTOP) && (any(cp[0], "|&") || eq(cp, "<<") || eq(cp, ">>")))
+ 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 (eq(cp, "=="))
- return (EQEQ);
- if (eq(cp, "!="))
- return (NOTEQ);
- if (eq(cp, "=~"))
- return (EQMATCH);
- if (eq(cp, "!~"))
- return (NOTEQMATCH);
+ 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))
- return (0);
+ }
+ if (what & RELOP) {
if (*cp == '<')
- return (LSS);
+ return (LSS);
if (*cp == '>')
- return (GTR);
- return (0);
+ return (GTR);
+ }
+ return (0);
}
+static int
egetn(cp)
- register char *cp;
+ register Char *cp;
{
-
- if (*cp && *cp != '-' && !digit(*cp))
- bferr("Expression syntax");
- return (getn(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;
+ char *str;
+ int i;
+ Char ***vp;
{
-
- printf("%s=%d\t", str, i);
- blkpr(*vp);
- printf("\n");
+ xprintf("%s=%d\t", str, i);
+ blkpr(*vp);
+ xprintf("\n");
}
-
+static void
etracc(str, cp, vp)
- char *str, *cp;
- char ***vp;
+ char *str;
+ Char *cp;
+ Char ***vp;
{
-
- printf("%s=%s\t", str, cp);
- blkpr(*vp);
- printf("\n");
+ xprintf("%s=%s\t", str, cp);
+ blkpr(*vp);
+ xprintf("\n");
}
#endif