diff options
author | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-25 15:02:05 +0000 |
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committer | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-25 15:02:05 +0000 |
commit | 0dc342de848a642ecce8db697b8fecd83a63e117 (patch) | |
tree | 2b7ed4724aff1f86073e4740134bda9c4aac1a39 /trunk/ext/tk/lib/tk/encodedstr.rb | |
parent | ef70cf7138ab8034b5b806f466e4b484b24f0f88 (diff) |
added tag v1_9_0_4
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'trunk/ext/tk/lib/tk/encodedstr.rb')
-rw-r--r-- | trunk/ext/tk/lib/tk/encodedstr.rb | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/trunk/ext/tk/lib/tk/encodedstr.rb b/trunk/ext/tk/lib/tk/encodedstr.rb new file mode 100644 index 0000000000..02de0b0d85 --- /dev/null +++ b/trunk/ext/tk/lib/tk/encodedstr.rb @@ -0,0 +1,187 @@ +# +# tk/encodedstr.rb : Tk::EncodedString class +# +require 'tk' + +########################################### +# string with Tcl's encoding +########################################### +module Tk + class EncodedString < String + Encoding = nil + + def self.subst_utf_backslash(str) + # str.gsub(/\\u([0-9A-Fa-f]{1,4})/){[$1.hex].pack('U')} + TclTkLib._subst_UTF_backslash(str) + end + def self.utf_backslash(str) + self.subst_utf_backslash(str) + end + + def self.subst_tk_backslash(str) + TclTkLib._subst_Tcl_backslash(str) + end + + def self.utf_to_backslash_sequence(str) + str.unpack('U*').collect{|c| + if c <= 0xFF # ascii character + c.chr + else + format('\u%X', c) + end + }.join('') + end + def self.utf_to_backslash(str) + self.utf_to_backslash_sequence(str) + end + + def self.to_backslash_sequence(str) + str.unpack('U*').collect{|c| + if c <= 0x1F # control character + case c + when 0x07; '\a' + when 0x08; '\b' + when 0x09; '\t' + when 0x0a; '\n' + when 0x0b; '\v' + when 0x0c; '\f' + when 0x0d; '\r' + else + format('\x%02X', c) + end + elsif c <= 0xFF # ascii character + c.chr + else + format('\u%X', c) + end + }.join('') + end + + def self.new_with_utf_backslash(str, enc = nil) + self.new('', enc).replace(self.subst_utf_backslash(str)) + end + + def self.new_without_utf_backslash(str, enc = nil) + self.new('', enc).replace(str) + end + + def initialize(str, enc = nil) + super(str) + # @encoding = ( enc || + # ((self.class::Encoding)? + # self.class::Encoding : Tk.encoding_system) ) + enc ||= (self.class::Encoding)? + self.class::Encoding : + ((Tk.encoding)? Tk.encoding : Tk.encoding_system) + if TkCore::WITH_ENCODING + unless encobj = Tk::Encoding::ENCODING_TABLE.get_obj(enc) + fail ArgumentError, "unsupported Tk encoding '#{enc}'" + end + self.force_encoding(encobj) + else + @encoding = enc + end + end + + if TkCore::WITH_ENCODING + alias encoding_obj encoding + alias __encoding encoding + def encoding + Tk::Encoding::ENCODING_TABLE.get_name(super()) + end + else + def encoding + @encoding + end + alias encoding_obj encoding + end + + if TkCore::WITH_ENCODING + # wrapper methods for compatibility + alias __instance_variable_get instance_variable_get + alias __instance_variable_set instance_variable_set + alias __instance_eval instance_eval + alias __instance_variables instance_variables + + def instance_variable_get(key) + if (key.to_s == '@encoding') + self.encoding + else + super(key) + end + end + + def instance_variable_set(key, value) + if (key.to_s == '@encoding') + if value + self.force_encoding(value) + else + self.force_encoding(Tk::Encoding::UNKNOWN) + end + value + else + super(key, value) + end + end + + def instance_eval(*args, &b) + old_enc = @encoding = self.encoding + + ret = super(*args, &b) + + if @encoding + if @encoding != old_enc + # modified by user + self.force_encoding(@encoding) + end + remove_instance_variable(:@encoding) + else + begin + remove_instance_variable(:@encoding) + # user sets to nil -> use current default + self.force_encoding(Tk.encoding) + rescue NameError + # removed by user -> ignore, because user don't use @encoding + end + end + ret + end + end + + def instance_variables + ret = super() + ret << :@encoding # fake !! + ret + end + end + # def Tk.EncodedString(str, enc = nil) + # Tk::EncodedString.new(str, enc) + # end + + ################################## + + class BinaryString < EncodedString + Encoding = 'binary'.freeze + end + # def Tk.BinaryString(str) + # Tk::BinaryString.new(str) + # end + + ################################## + + class UTF8_String < EncodedString + Encoding = 'utf-8'.freeze + def self.new(str) + super(self.subst_utf_backslash(str)) + end + + def to_backslash_sequence + Tk::EncodedString.utf_to_backslash_sequence(self) + end + alias to_backslash to_backslash_sequence + end + # def Tk.UTF8_String(str) + # Tk::UTF8_String.new(str) + # end + +end |