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Fix custom getopt_long for certain arguments.

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getopt_long() treats this as equivalent: {"-c", "foo"}, {"-cfoo"}.
This is fixed.
This commit is contained in:
Themaister 2012-01-21 16:27:51 +01:00
parent 8f0a47e6c3
commit 0a3dc05c27
1 changed files with 17 additions and 6 deletions
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23
getopt.c
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@ -71,18 +71,29 @@ static int parse_short(const char *optstring, char * const *argv)
if (!opt)
return '?';
bool multiple_opt = argv[0][2];
bool extra_opt = argv[0][2];
bool takes_arg = opt[1] == ':';
if (multiple_opt && takes_arg) // Makes little sense to allow.
return '?';
// If we take an argument, and we see additional characters,
// this is in fact the argument (i.e. -cfoo is same as -c foo).
bool embedded_arg = extra_opt && takes_arg;
if (takes_arg)
{
optarg = argv[1];
optind += 2;
if (embedded_arg)
{
optarg = argv[0] + 2;
optind++;
}
else
{
optarg = argv[1];
optind += 2;
}
return optarg ? opt[0] : '?';
}
else if (multiple_opt)
else if (embedded_arg) // If we see additional characters, and they don't take arguments, this means we have multiple flags in one.
{
memmove(&argv[0][1], &argv[0][2], strlen(&argv[0][2]) + 1);
return opt[0];