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-rw-r--r--util-linux/getopt.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/util-linux/getopt.c b/util-linux/getopt.c
index b74dd65a1..95ecba6e6 100644
--- a/util-linux/getopt.c
+++ b/util-linux/getopt.c
@@ -243,20 +243,23 @@ void add_longopt(const char *name,int has_arg)
*/
void add_long_options(char *options)
{
- int arg_opt;
+ int arg_opt, tlen;
char *tokptr=strtok(options,", \t\n");
while (tokptr) {
arg_opt=no_argument;
- if (strlen(tokptr) > 0) {
- if (tokptr[strlen(tokptr)-1] == ':') {
- if (tokptr[strlen(tokptr)-2] == ':') {
- tokptr[strlen(tokptr)-2]='\0';
+ tlen=strlen(tokptr);
+ if (tlen > 0) {
+ if (tokptr[tlen-1] == ':') {
+ if (tlen > 1 && tokptr[tlen-2] == ':') {
+ tokptr[tlen-2]='\0';
+ tlen -= 2;
arg_opt=optional_argument;
} else {
- tokptr[strlen(tokptr)-1]='\0';
+ tokptr[tlen-1]='\0';
+ tlen -= 1;
arg_opt=required_argument;
}
- if (strlen(tokptr) == 0)
+ if (tlen == 0)
error_msg("empty long option after -l or --long argument");
}
add_longopt(tokptr,arg_opt);