path: root/coreutils/env.c
diff options
authorGravatar Eric Andersen <andersen@codepoet.org>2003-06-20 09:01:58 +0000
committerGravatar Eric Andersen <andersen@codepoet.org>2003-06-20 09:01:58 +0000
commit8876fb2f59a0b515b3121d5894933eef88ce566a (patch)
treef67de9320202043aca8ded20fb80d668c3b0c2d8 /coreutils/env.c
parentdfce3536ace2bcd38bdd3731841998ce344d786e (diff)
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
Diffstat (limited to 'coreutils/env.c')
1 files changed, 5 insertions, 12 deletions
diff --git a/coreutils/env.c b/coreutils/env.c
index db13b3aed..eb761e9e9 100644
--- a/coreutils/env.c
+++ b/coreutils/env.c
@@ -44,20 +44,13 @@ extern int env_main(int argc, char** argv)
char **ep, *p;
char *cleanenv[1] = { NULL };
- int ch;
+ unsigned long opt;
- while ((ch = getopt(argc, argv, "iu:")) > 0) {
- switch(ch) {
- case 'i':
+ opt = bb_getopt_ulflags(argc, argv, "iu:", &p);
+ if(opt & 1)
environ = cleanenv;
- break;
- case 'u':
- unsetenv(optarg);
- break;
- default:
- bb_show_usage();
- }
- }
+ if(opt & 2)
+ unsetenv(p);
argv += optind;