From 18c05b6d88d6700465d4308257dfe8968c7522cc Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sat, 6 Oct 2007 21:18:58 +0800
Subject: [VAR] Remove setvarsafe

The only user of setvarsafe is getopts.  However, we can achieve the same
result by pre-setting the value of shellparam.optind.
---
 src/options.c | 48 +++++++++++++++++++++++-------------------------
 src/var.c     | 25 -------------------------
 src/var.h     |  1 -
 3 files changed, 23 insertions(+), 51 deletions(-)

(limited to 'src')

diff --git a/src/options.c b/src/options.c
index 045345a..568148a 100644
--- a/src/options.c
+++ b/src/options.c
@@ -109,7 +109,7 @@ char optlist[NOPTS];
 STATIC void options(int);
 STATIC void minus_o(char *, int);
 STATIC void setoption(int, int);
-STATIC int getopts(char *, char *, char **, int *, int *); 
+STATIC int getopts(char *, char *, char **);
 
 
 /*
@@ -397,39 +397,40 @@ getoptscmd(int argc, char **argv)
 		sh_error("Usage: getopts optstring var [arg]");
 	else if (argc == 3) {
 		optbase = shellparam.p;
-		if (shellparam.optind > shellparam.nparam + 1) {
+		if ((unsigned)shellparam.optind > shellparam.nparam + 1) {
 			shellparam.optind = 1;
 			shellparam.optoff = -1;
 		}
 	}
 	else {
 		optbase = &argv[3];
-		if (shellparam.optind > argc - 2) {
+		if ((unsigned)shellparam.optind > argc - 2) {
 			shellparam.optind = 1;
 			shellparam.optoff = -1;
 		}
 	}
 
-	return getopts(argv[1], argv[2], optbase, &shellparam.optind,
-		       &shellparam.optoff);
+	return getopts(argv[1], argv[2], optbase);
 }
 
 STATIC int
-getopts(char *optstr, char *optvar, char **optfirst, int *optind, int *optoff)
+getopts(char *optstr, char *optvar, char **optfirst)
 {
 	char *p, *q;
 	char c = '?';
 	int done = 0;
-	int err = 0;
 	char s[12];
 	char **optnext;
+	int ind = shellparam.optind;
+	int off = shellparam.optoff;
 
-	optnext = optfirst + *optind - 1;
+	shellparam.optind = -1;
+	optnext = optfirst + ind - 1;
 
-	if (*optind <= 1 || *optoff < 0 || strlen(optnext[-1]) < *optoff)
+	if (ind <= 1 || off < 0 || strlen(optnext[-1]) < off)
 		p = NULL;
 	else
-		p = optnext[-1] + *optoff;
+		p = optnext[-1] + off;
 	if (p == NULL || *p == '\0') {
 		/* Current word is done, advance */
 		p = *optnext;
@@ -450,7 +451,7 @@ atend:
 			if (optstr[0] == ':') {
 				s[0] = c;
 				s[1] = '\0';
-				err |= setvarsafe("OPTARG", s, 0);
+				setvar("OPTARG", s, 0);
 			} else {
 				outfmt(&errout, "Illegal option -%c\n", c);
 				(void) unsetvar("OPTARG");
@@ -467,7 +468,7 @@ atend:
 			if (optstr[0] == ':') {
 				s[0] = c;
 				s[1] = '\0';
-				err |= setvarsafe("OPTARG", s, 0);
+				setvar("OPTARG", s, 0);
 				c = ':';
 			} else {
 				outfmt(&errout, "No arg for -%c option\n", c);
@@ -479,25 +480,22 @@ atend:
 
 		if (p == *optnext)
 			optnext++;
-		err |= setvarsafe("OPTARG", p, 0);
+		setvar("OPTARG", p, 0);
 		p = NULL;
 	} else
-		err |= setvarsafe("OPTARG", nullstr, 0);
+		setvar("OPTARG", nullstr, 0);
 
 out:
-	*optoff = p ? p - *(optnext - 1) : -1;
-	*optind = optnext - optfirst + 1;
-	fmtstr(s, sizeof(s), "%d", *optind);
-	err |= setvarsafe("OPTIND", s, VNOFUNC);
+	ind = optnext - optfirst + 1;
+	fmtstr(s, sizeof(s), "%d", ind);
+	setvar("OPTIND", s, VNOFUNC);
 	s[0] = c;
 	s[1] = '\0';
-	err |= setvarsafe(optvar, s, 0);
-	if (err) {
-		*optind = 1;
-		*optoff = -1;
-		flushall();
-		exraise(EXERROR);
-	}
+	setvar(optvar, s, 0);
+
+	shellparam.optoff = p ? p - *(optnext - 1) : -1;
+	shellparam.optind = ind;
+
 	return done;
 }
 
diff --git a/src/var.c b/src/var.c
index 3263dc5..501a279 100644
--- a/src/var.c
+++ b/src/var.c
@@ -167,31 +167,6 @@ initvar(void)
 		vps1.text = "PS1=# ";
 }
 
-/*
- * Safe version of setvar, returns 1 on success 0 on failure.
- */
-
-int
-setvarsafe(const char *name, const char *val, int flags)
-{
-	int err;
-	volatile int saveint;
-	struct jmploc *volatile savehandler = handler;
-	struct jmploc jmploc;
-
-	SAVEINT(saveint);
-	if (setjmp(jmploc.loc))
-		err = 1;
-	else {
-		handler = &jmploc;
-		setvar(name, val, flags);
-		err = 0;
-	}
-	handler = savehandler;
-	RESTOREINT(saveint);
-	return err;
-}
-
 /*
  * Set the value of a variable.  The flags argument is ored with the
  * flags of the variable.  If val is NULL, the variable is unset.
diff --git a/src/var.h b/src/var.h
index c3c2ca7..ae58c6c 100644
--- a/src/var.h
+++ b/src/var.h
@@ -138,7 +138,6 @@ int localcmd(int, char **);
 void poplocalvars(void);
 int unsetcmd(int, char **);
 int unsetvar(const char *);
-int setvarsafe(const char *, const char *, int);
 int varcmp(const char *, const char *);
 
 static inline int varequal(const char *a, const char *b) {
-- 
cgit 1.4.1