getopt: make user getopt_long parsing to use function pointer

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

1 files changed, 7 insertions, 5 deletions

diff --git a/getopt/getopt.c b/getopt/getopt.c
index ceb9d3ded..b857aac83 100644
--- a/getopt/getopt.c
+++ b/getopt/getopt.c
@@ -76,7 +76,10 @@ static shell_t shell=BASH; /* The shell we generate output for. */
 static int quiet_errors=0; /* 0 is not quiet. */
 static int quiet_output=0; /* 0 is not quiet. */
 static int quote=1; /* 1 is do quote. */
-static int alternative=0; /* 0 is getopt_long, 1 is getopt_long_only */
+
+/* Allow changing which getopt is in use with function pointer */
+int (*getopt_long_fp) (int argc, char *const *argv, const char *optstr,
+		       const struct option * longopts, int *longindex);
 
 /* Function prototypes */
 static const char *normalize(const char *arg);
@@ -172,9 +175,7 @@ static int generate_output(char * argv[],int argc,const char *optstr,
 		opterr=0;
 	optind=0; /* Reset getopt(3) */
 
-	while ((opt = (alternative?
-	              getopt_long_only(argc,argv,optstr,longopts,&longindex):
-	              getopt_long(argc,argv,optstr,longopts,&longindex))) 
+	while ((opt = (getopt_long_fp(argc,argv,optstr,longopts,&longindex)))
                != EOF) 
 		if (opt == '?' || opt == ':' )
 			exit_code = GETOPT_EXIT_CODE;
@@ -352,6 +353,7 @@ int main(int argc, char *argv[])
 	textdomain(PACKAGE);
 
 	init_longopt();
+	getopt_long_fp = getopt_long;
 
 	if (getenv("GETOPT_COMPATIBLE")) 
 		compatible=1;
@@ -379,7 +381,7 @@ int main(int argc, char *argv[])
 	while ((opt=getopt_long(argc,argv,shortopts,longopts,NULL)) != EOF) 
 		switch (opt) {
 		case 'a':
-			alternative=1;
+			getopt_long_fp = getopt_long_only;
 			break;
 		case 'h':
 			print_help();