diff options
| -rw-r--r-- | libbb/getopt_ulflags.c | 48 |
1 files changed, 20 insertions, 28 deletions
diff --git a/libbb/getopt_ulflags.c b/libbb/getopt_ulflags.c index 42e83c4..81d22c3 100644 --- a/libbb/getopt_ulflags.c +++ b/libbb/getopt_ulflags.c @@ -46,7 +46,7 @@ Warning! You can check returned flag, pointer to "d:" argument seted to own optarg always. Example two: cut applet must only one type of list may be specified, and -b, -c and -f incongruously option, overwited option is error also. -You must set bb_opt_complementaly = "b~bcf:c~bcf:f~bcf". +You must set bb_opt_complementaly = "b~cf:c~bf:f~bc". If called have more one specified, return value have error flag - high bite set (0x80000000UL). Example three: grep applet can have one or more "-e pattern" arguments. @@ -81,10 +81,10 @@ const struct option *bb_applet_long_options = bb_default_long_options; unsigned long bb_getopt_ulflags (int argc, char **argv, const char *applet_opts, ...) { - unsigned long flags = 0; - int c = 0; - const unsigned char *s; - t_complementaly *complementaly; + unsigned long flags = 0; + t_complementaly complementaly[sizeof(flags) * 8 + 1]; + int c; + const unsigned char *s; t_complementaly *on_off; va_list p; @@ -95,34 +95,27 @@ bb_getopt_ulflags (int argc, char **argv, const char *applet_opts, ...) if(*s == '+' || *s == '-') s++; - for (; *s; s++) { - c++; - while (s[1] == ':') { - /* check GNU extension "o::" - optional arg */ - s++; - } - } - complementaly = xcalloc (c + 1, sizeof (t_complementaly)); c = 0; - /* skip GNU extension */ - s = applet_opts; - if(*s == '+' || *s == '-') - s++; - + on_off = complementaly; for (; *s; s++) { - complementaly->opt = *s; - complementaly->switch_on |= (1 << c); - c++; + if(c >= (sizeof(flags)*8)) + break; + on_off->opt = *s; + on_off->switch_on |= (1 << c); + on_off->list_flg = 0; + on_off->switch_off = 0; + on_off->incongruously = 0; + on_off->optarg = NULL; if (s[1] == ':') { - complementaly->optarg = va_arg (p, void **); + on_off->optarg = va_arg (p, void **); do s++; while (s[1] == ':'); - } - complementaly++; } - complementaly->opt = 0; - complementaly -= c; + on_off++; + c++; + } + on_off->opt = 0; c = 0; for (s = bb_opt_complementaly; s && *s; s++) { t_complementaly *pair; @@ -174,6 +167,5 @@ bb_getopt_ulflags (int argc, char **argv, const char *applet_opts, ...) *(char **)(on_off->optarg) = optarg; } } - free(complementaly); - return flags; + return flags; } |