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ruby.c: abbreviated option name

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* ruby.c (name_match_p): allow option argument names to be
  abbreviated for each words.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51951 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-09-27 05:47:24 +00:00
parent 7f13f878cf
commit 6b52b88d46
1 changed files with 19 additions and 1 deletions
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20
ruby.c
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@ -693,8 +693,26 @@ moreswitches(const char *s, struct cmdline_options *opt, int envopt)
rb_str_resize(argstr, 0);
}
static int
name_match_p(const char *name, const char *str, size_t len)
{
if (len == 0) return 0;
do {
while (TOLOWER(*str) == *name) {
if (!--len || !*++str) return 1;
++name;
}
if (*str != '-' && *str != '_') return 0;
while (ISALNUM(*name)) name++;
if (*name != '-' && *name != '_') return 0;
++name;
++str;
} while (len > 0);
return !*name;
}
#define NAME_MATCH_P(name, str, len) \
((len) < (int)sizeof(name) && strncmp((str), (name), (len)) == 0)
((len) < (int)sizeof(name) && name_match_p((name), (str), (len)))
#define UNSET_WHEN(name, bit, str, len) \
if (NAME_MATCH_P((name), (str), (len))) { \