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author | Ben Pfaff <blp@nicira.com> | 2009-07-08 13:19:16 -0700 |
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committer | Ben Pfaff <blp@nicira.com> | 2009-07-08 13:19:16 -0700 |
commit | 064af42167bf4fc9aaea2702d80ce08074b889c0 (patch) | |
tree | efd15a6dc2402eeec273bb34db3b2445687589e5 /lib/command-line.c | |
download | openvswitch-064af42167bf4fc9aaea2702d80ce08074b889c0.tar.gz |
Import from old repository commit 61ef2b42a9c4ba8e1600f15bb0236765edc2ad45.v0.90.0
Diffstat (limited to 'lib/command-line.c')
-rw-r--r-- | lib/command-line.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/command-line.c b/lib/command-line.c new file mode 100644 index 000000000..e0bd88110 --- /dev/null +++ b/lib/command-line.c @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2008 Nicira Networks. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <config.h> +#include "command-line.h" +#include <getopt.h> +#include <limits.h> +#include "util.h" +#include "vlog.h" + +/* Given the GNU-style long options in 'options', returns a string that may be + * passed to getopt() with the corresponding short options. The caller is + * responsible for freeing the string. */ +char * +long_options_to_short_options(const struct option options[]) +{ + char short_options[UCHAR_MAX * 3 + 1]; + char *p = short_options; + + for (; options->name; options++) { + const struct option *o = options; + if (o->flag == NULL && o->val > 0 && o->val <= UCHAR_MAX) { + *p++ = o->val; + if (o->has_arg == required_argument) { + *p++ = ':'; + } else if (o->has_arg == optional_argument) { + *p++ = ':'; + *p++ = ':'; + } + } + } + *p = '\0'; + + return xstrdup(short_options); +} + |