last_patch89 from vodz:
Manuel,
I rewrite bb_getopt_ulflags() function for more universal usage.
My version support now:
- options with arguments (optional arg as GNU extension also)
- complementaly and/or incomplementaly and/or incongruously and/or list
options
- long_opt (all applets may have long option, add supporting is trivial)
This realisation full compatibile from your version.
Code size grow 480 bytes, but only coreutils/* over compensate this size
after using new function. Last patch reduced over 800 bytes and not full
applied to all. "mkdir" and "mv" applets have long_opt now for demonstrate
trivial addition support long_opt with usage new bb_getopt_ulflags().
Complementaly and/or incomplementaly and/or incongruously and/or list options
logic is not trivial, but new "cut" and "grep" applets using this logic
for examples with full demostrating. New "grep" applet reduced over 300
bytes.
Mark,
Also. I removed bug from "grep" applet.
$ echo a b | busybox grep -e a b
a b
a b
But right is printing one only.
--w
vodz
diff --git a/coreutils/df.c b/coreutils/df.c
index 708e12c..9673633 100644
--- a/coreutils/df.c
+++ b/coreutils/df.c
@@ -55,41 +55,27 @@
unsigned long df_disp_hr = KILOBYTE;
#endif
int status = EXIT_SUCCESS;
- int opt;
+ unsigned long opt;
FILE *mount_table;
struct mntent *mount_entry;
struct statfs s;
static const char hdr_1k[] = "1k-blocks"; /* default display is kilobytes */
const char *disp_units_hdr = hdr_1k;
- while ((opt = getopt(argc, argv, "k"
#ifdef CONFIG_FEATURE_HUMAN_READABLE
- "hm"
-#endif
-)) > 0)
- {
- switch (opt) {
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
- case 'h':
+ bb_opt_complementaly = "h-km:k-hm:m-hk";
+ opt = bb_getopt_ulflags(argc, argv, "hmk");
+ if(opt & 1) {
df_disp_hr = 0;
disp_units_hdr = " Size";
- break;
- case 'm':
+ }
+ if(opt & 2) {
df_disp_hr = MEGABYTE;
disp_units_hdr = "1M-blocks";
- break;
-#endif
- case 'k':
- /* default display is kilobytes */
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
- df_disp_hr = KILOBYTE;
- disp_units_hdr = hdr_1k;
-#endif
- break;
- default:
- bb_show_usage();
- }
}
+#else
+ opt = bb_getopt_ulflags(argc, argv, "k");
+#endif
bb_printf("Filesystem%11s%-15sUsed Available Use%% Mounted on\n",
"", disp_units_hdr);