From 58c6c1be60d96df4b7cb8d77625948b0da297144 Mon Sep 17 00:00:00 2001
From: Rob Landley <rob@landley.net>
Date: Sat, 25 Nov 2006 13:34:51 -0500
Subject: More work on option parsing.  "df -t tmpfs" actually seems to work
 now.

---
 lib/args.c     | 20 +++++++++++---------
 toys/df.c      |  9 +++++----
 toys/toylist.h |  2 +-
 3 files changed, 17 insertions(+), 14 deletions(-)

diff --git a/lib/args.c b/lib/args.c
index 6a8162ac..a6a3b229 100644
--- a/lib/args.c
+++ b/lib/args.c
@@ -56,7 +56,7 @@ struct opts {
 	char c;
 	int type;
 	int shift;
-	void *arg;
+	long *arg;
 };
 
 struct getoptflagstate
@@ -79,21 +79,21 @@ static void gotflag(void)
 
 	// Does this option take an argument?
 	gof.arg++;
-	if (gof.this->type & 255) {
-		// Make "tar xCjfv blah1 blah2 thingy" work like
+	type = gof.this->type & 255;
+	if (type) {
+
+		// Handle "-xblah" and "-x blah", but also a third case: "abxc blah"
+		// to make "tar xCjfv blah1 blah2 thingy" work like
 		// "tar -x -C blah1 -j -f blah2 -v thingy"
 		if (!gof.nodash_now && !*gof.arg) {
 			gof.arg = toys.argv[++gof.argc];
 			if (!gof.arg) error_exit("Missing argument");
 		}
-	} else gof.this = NULL;
 
-	// If the last option had an argument, grab it.
-	if (gof.this) {
-		type = gof.this->type & 255;
+		// Grab argument.
 		if (!gof.arg && !(gof.arg = toys.argv[++gof.argc]))
 			error_exit("Missing argument");
-		if (type == ':') gof.this->arg = gof.arg;
+		if (type == ':') *(gof.this->arg) = (long)gof.arg;
 		else if (type == '*') {
 			struct arg_list *temp, **list;
 			list = (struct arg_list **)gof.this->arg;
@@ -107,6 +107,8 @@ static void gotflag(void)
 
 		gof.arg = "";
 	}
+
+	gof.this = NULL;
 }
 
 // Fill out toys.optflags and toys.optargs.  This isn't reentrant because
@@ -180,8 +182,8 @@ void get_optflags(void)
 			} else if (index(":*?@", *options)) {
 				gof.this->type |= *options;
 				// Pointer and long guaranteed to be the same size by LP64.
-				*(++nextarg) = 0;
 				gof.this->arg = (void *)nextarg;
+				*(nextarg++) = 0;
 			} else if (*options == '|') {
 			} else if (*options == '+') {
 			} else if (*options == '~') {
diff --git a/toys/df.c b/toys/df.c
index 375aa0ab..3e8a9725 100644
--- a/toys/df.c
+++ b/toys/df.c
@@ -21,11 +21,12 @@ static void show_mt(struct mtab_list *mt)
 
 	// If we have -t, skip other filesystem types
 	if (toy.df.fstype) {
-		struct string_list *sl;
+		struct arg_list *al;
 
-		for (sl = toy.df.fstype; sl; sl = sl->next)
-			if (!strcmp(mt->type, sl->str)) break;
-		if (!sl) return;
+		for (al = toy.df.fstype; al; al = al->next) {
+			if (!strcmp(mt->type, al->arg)) break;
+		}
+		if (!al) return;
 	}
 
 	// If we don't have -a, skip synthetic filesystems
diff --git a/toys/toylist.h b/toys/toylist.h
index a0eef1c1..ad749cd2 100644
--- a/toys/toylist.h
+++ b/toys/toylist.h
@@ -54,7 +54,7 @@ NEWTOY(toybox, NULL, 0)
 // The rest of these are alphabetical, for binary search.
 
 USE_TOYSH(NEWTOY(cd, NULL, TOYFLAG_NOFORK))
-USE_DF(NEWTOY(df, "Pkt:a", TOYFLAG_USR|TOYFLAG_SBIN))
+USE_DF(NEWTOY(df, "Pkt*a", TOYFLAG_USR|TOYFLAG_SBIN))
 USE_TOYSH(NEWTOY(exit, NULL, TOYFLAG_NOFORK))
 USE_HELLO(NEWTOY(hello, NULL, TOYFLAG_NOFORK|TOYFLAG_USR))
 USE_PWD(NEWTOY(pwd, NULL, TOYFLAG_BIN))
-- 
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