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-rw-r--r--jni/ruby/ext/nkf/lib/kconv.rb282
1 files changed, 282 insertions, 0 deletions
diff --git a/jni/ruby/ext/nkf/lib/kconv.rb b/jni/ruby/ext/nkf/lib/kconv.rb
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+#
+# kconv.rb - Kanji Converter.
+#
+# $Id: kconv.rb 30112 2010-12-07 11:47:39Z naruse $
+#
+# ----
+#
+# kconv.rb implements the Kconv class for Kanji Converter. Additionally,
+# some methods in String classes are added to allow easy conversion.
+#
+
+require 'nkf'
+
+#
+# Kanji Converter for Ruby.
+#
+module Kconv
+ #
+ # Public Constants
+ #
+
+ #Constant of Encoding
+
+ # Auto-Detect
+ AUTO = NKF::AUTO
+ # ISO-2022-JP
+ JIS = NKF::JIS
+ # EUC-JP
+ EUC = NKF::EUC
+ # Shift_JIS
+ SJIS = NKF::SJIS
+ # BINARY
+ BINARY = NKF::BINARY
+ # NOCONV
+ NOCONV = NKF::NOCONV
+ # ASCII
+ ASCII = NKF::ASCII
+ # UTF-8
+ UTF8 = NKF::UTF8
+ # UTF-16
+ UTF16 = NKF::UTF16
+ # UTF-32
+ UTF32 = NKF::UTF32
+ # UNKNOWN
+ UNKNOWN = NKF::UNKNOWN
+
+ #
+ # Public Methods
+ #
+
+ # call-seq:
+ # Kconv.kconv(str, to_enc, from_enc=nil)
+ #
+ # Convert <code>str</code> to <code>to_enc</code>.
+ # <code>to_enc</code> and <code>from_enc</code> are given as constants of Kconv or Encoding objects.
+ def kconv(str, to_enc, from_enc=nil)
+ opt = ''
+ opt += ' --ic=' + from_enc.to_s if from_enc
+ opt += ' --oc=' + to_enc.to_s if to_enc
+
+ ::NKF::nkf(opt, str)
+ end
+ module_function :kconv
+
+ #
+ # Encode to
+ #
+
+ # call-seq:
+ # Kconv.tojis(str) => string
+ #
+ # Convert <code>str</code> to ISO-2022-JP
+ def tojis(str)
+ kconv(str, JIS)
+ end
+ module_function :tojis
+
+ # call-seq:
+ # Kconv.toeuc(str) => string
+ #
+ # Convert <code>str</code> to EUC-JP
+ def toeuc(str)
+ kconv(str, EUC)
+ end
+ module_function :toeuc
+
+ # call-seq:
+ # Kconv.tosjis(str) => string
+ #
+ # Convert <code>str</code> to Shift_JIS
+ def tosjis(str)
+ kconv(str, SJIS)
+ end
+ module_function :tosjis
+
+ # call-seq:
+ # Kconv.toutf8(str) => string
+ #
+ # Convert <code>str</code> to UTF-8
+ def toutf8(str)
+ kconv(str, UTF8)
+ end
+ module_function :toutf8
+
+ # call-seq:
+ # Kconv.toutf16(str) => string
+ #
+ # Convert <code>str</code> to UTF-16
+ def toutf16(str)
+ kconv(str, UTF16)
+ end
+ module_function :toutf16
+
+ # call-seq:
+ # Kconv.toutf32(str) => string
+ #
+ # Convert <code>str</code> to UTF-32
+ def toutf32(str)
+ kconv(str, UTF32)
+ end
+ module_function :toutf32
+
+ # call-seq:
+ # Kconv.tolocale => string
+ #
+ # Convert <code>self</code> to locale encoding
+ def tolocale(str)
+ kconv(str, Encoding.locale_charmap)
+ end
+ module_function :tolocale
+
+ #
+ # guess
+ #
+
+ # call-seq:
+ # Kconv.guess(str) => encoding
+ #
+ # Guess input encoding by NKF.guess
+ def guess(str)
+ ::NKF::guess(str)
+ end
+ module_function :guess
+
+ #
+ # isEncoding
+ #
+
+ # call-seq:
+ # Kconv.iseuc(str) => true or false
+ #
+ # Returns whether input encoding is EUC-JP or not.
+ #
+ # *Note* don't expect this return value is MatchData.
+ def iseuc(str)
+ str.dup.force_encoding(EUC).valid_encoding?
+ end
+ module_function :iseuc
+
+ # call-seq:
+ # Kconv.issjis(str) => true or false
+ #
+ # Returns whether input encoding is Shift_JIS or not.
+ def issjis(str)
+ str.dup.force_encoding(SJIS).valid_encoding?
+ end
+ module_function :issjis
+
+ # call-seq:
+ # Kconv.isjis(str) => true or false
+ #
+ # Returns whether input encoding is ISO-2022-JP or not.
+ def isjis(str)
+ /\A [\t\n\r\x20-\x7E]*
+ (?:
+ (?:\x1b \x28 I [\x21-\x7E]*
+ |\x1b \x28 J [\x21-\x7E]*
+ |\x1b \x24 @ (?:[\x21-\x7E]{2})*
+ |\x1b \x24 B (?:[\x21-\x7E]{2})*
+ |\x1b \x24 \x28 D (?:[\x21-\x7E]{2})*
+ )*
+ \x1b \x28 B [\t\n\r\x20-\x7E]*
+ )*
+ \z/nox =~ str.dup.force_encoding('BINARY') ? true : false
+ end
+ module_function :isjis
+
+ # call-seq:
+ # Kconv.isutf8(str) => true or false
+ #
+ # Returns whether input encoding is UTF-8 or not.
+ def isutf8(str)
+ str.dup.force_encoding(UTF8).valid_encoding?
+ end
+ module_function :isutf8
+end
+
+class String
+ # call-seq:
+ # String#kconv(to_enc, from_enc)
+ #
+ # Convert <code>self</code> to <code>to_enc</code>.
+ # <code>to_enc</code> and <code>from_enc</code> are given as constants of Kconv or Encoding objects.
+ def kconv(to_enc, from_enc=nil)
+ from_enc = self.encoding if !from_enc && self.encoding != Encoding.list[0]
+ Kconv::kconv(self, to_enc, from_enc)
+ end
+
+ #
+ # to Encoding
+ #
+
+ # call-seq:
+ # String#tojis => string
+ #
+ # Convert <code>self</code> to ISO-2022-JP
+ def tojis; Kconv.tojis(self) end
+
+ # call-seq:
+ # String#toeuc => string
+ #
+ # Convert <code>self</code> to EUC-JP
+ def toeuc; Kconv.toeuc(self) end
+
+ # call-seq:
+ # String#tosjis => string
+ #
+ # Convert <code>self</code> to Shift_JIS
+ def tosjis; Kconv.tosjis(self) end
+
+ # call-seq:
+ # String#toutf8 => string
+ #
+ # Convert <code>self</code> to UTF-8
+ def toutf8; Kconv.toutf8(self) end
+
+ # call-seq:
+ # String#toutf16 => string
+ #
+ # Convert <code>self</code> to UTF-16
+ def toutf16; Kconv.toutf16(self) end
+
+ # call-seq:
+ # String#toutf32 => string
+ #
+ # Convert <code>self</code> to UTF-32
+ def toutf32; Kconv.toutf32(self) end
+
+ # call-seq:
+ # String#tolocale => string
+ #
+ # Convert <code>self</code> to locale encoding
+ def tolocale; Kconv.tolocale(self) end
+
+ #
+ # is Encoding
+ #
+
+ # call-seq:
+ # String#iseuc => true or false
+ #
+ # Returns whether <code>self</code>'s encoding is EUC-JP or not.
+ def iseuc; Kconv.iseuc(self) end
+
+ # call-seq:
+ # String#issjis => true or false
+ #
+ # Returns whether <code>self</code>'s encoding is Shift_JIS or not.
+ def issjis; Kconv.issjis(self) end
+
+ # call-seq:
+ # String#isjis => true or false
+ #
+ # Returns whether <code>self</code>'s encoding is ISO-2022-JP or not.
+ def isjis; Kconv.isjis(self) end
+
+ # call-seq:
+ # String#isutf8 => true or false
+ #
+ # Returns whether <code>self</code>'s encoding is UTF-8 or not.
+ def isutf8; Kconv.isutf8(self) end
+end