diff options
Diffstat (limited to 'lib/jcode.rb')
| -rw-r--r-- | lib/jcode.rb | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/lib/jcode.rb b/lib/jcode.rb index 5b2289932f..40ab48ddac 100644 --- a/lib/jcode.rb +++ b/lib/jcode.rb @@ -1,15 +1,31 @@ # jcode.rb - ruby code to handle japanese (EUC/SJIS) string +$vsave, $VERBOSE = $VERBOSE, FALSE class String printf STDERR, "feel free for some warnings:\n" if $VERBOSE + def jlength + self.split(//).length + end + alias original_succ succ private :original_succ + def mbchar?(c) + if $KCODE =~ /^s/i + c =~ /[\x81-\x9f\xe0-\xef][\x40-\x7e\x80-\xfc]/n + elsif $KCODE =~ /^e/i + c =~ /[\xa1-\xfe][\xa1-\xfe]/n + else + FALSE + end + end + def succ if self[-2] && self[-2] & 0x80 != 0 s = self.dup s[-1] += 1 + s[-1] += 1 if !mbchar?(s) return s else original_succ @@ -23,8 +39,11 @@ class String tail = self[-2..-1] if tail.length == 2 and tail =~ /^.$/ then if self[0..-2] == to[0..-2] + first = self[-2].chr for c in self[-1] .. to[-1] - yield self[0..-2]+c.chr + if mbchar?(first+c.chr) + yield self[0..-2]+c.chr + end end end else @@ -171,4 +190,18 @@ class String self.dup.tr_s!(from,to) end + alias original_chop! chop! + private :original_chop! + + def chop! + if self =~ /(.)$/ and $1.size == 2 + original_chop! + end + original_chop! + end + + def chop + self.dup.chop! + end end +$VERBOSE = $vsave |