# # NKF - Ruby extension for Network Kanji Filter # # ## Description # # This is a Ruby Extension version of nkf (Network Kanji Filter). It converts # the first argument and returns converted result. Conversion details are # specified by flags as the first argument. # # **Nkf** is a yet another kanji code converter among networks, hosts and # terminals. It converts input kanji code to designated kanji code such as # ISO-2022-JP, Shift_JIS, EUC-JP, UTF-8 or UTF-16. # # One of the most unique faculty of **nkf** is the guess of the input kanji # encodings. It currently recognizes ISO-2022-JP, Shift_JIS, EUC-JP, UTF-8 and # UTF-16. So users needn't set the input kanji code explicitly. # # By default, X0201 kana is converted into X0208 kana. For X0201 kana, SO/SI, # SSO and ESC-(-I methods are supported. For automatic code detection, nkf # assumes no X0201 kana in Shift_JIS. To accept X0201 in Shift_JIS, use **-X**, # **-x** or **-S**. # # ## Flags # # ### -b -u # # Output is buffered (DEFAULT), Output is unbuffered. # # ### -j -s -e -w -w16 -w32 # # Output code is ISO-2022-JP (7bit JIS), Shift_JIS, EUC-JP, UTF-8N, UTF-16BE, # UTF-32BE. Without this option and compile option, ISO-2022-JP is assumed. # # ### -J -S -E -W -W16 -W32 # # Input assumption is JIS 7 bit, Shift_JIS, EUC-JP, UTF-8, UTF-16, UTF-32. # # #### -J # # Assume JIS input. It also accepts EUC-JP. This is the default. This flag does # not exclude Shift_JIS. # # #### -S # # Assume Shift_JIS and X0201 kana input. It also accepts JIS. EUC-JP is # recognized as X0201 kana. Without **-x** flag, X0201 kana (halfwidth kana) is # converted into X0208. # # #### -E # # Assume EUC-JP input. It also accepts JIS. Same as -J. # # ### -t # # No conversion. # # ### -i_ # # Output sequence to designate JIS-kanji. (DEFAULT B) # # ### -o_ # # Output sequence to designate ASCII. (DEFAULT B) # # ### -r # # {de/en}crypt ROT13/47 # # ### -[h](123) --hiragana --katakana --katakana-hiragana # # -h1 --hiragana # : Katakana to Hiragana conversion. # # -h2 --katakana # : Hiragana to Katakana conversion. # # -h3 --katakana-hiragana # : Katakana to Hiragana and Hiragana to Katakana conversion. # # # ### -T # # Text mode output (MS-DOS) # # ### -l # # ISO8859-1 (Latin-1) support # # ### -f[`m` [- `n`]] # # Folding on `m` length with `n` margin in a line. Without this option, fold # length is 60 and fold margin is 10. # # ### -F # # New line preserving line folding. # # ### -[Z](0-3) # # Convert X0208 alphabet (Fullwidth Alphabets) to ASCII. # # -Z -Z0 # : Convert X0208 alphabet to ASCII. # # -Z1 # : Converts X0208 kankaku to single ASCII space. # # -Z2 # : Converts X0208 kankaku to double ASCII spaces. # # -Z3 # : Replacing Fullwidth >, <, ", & into '>', '<', '"', '&' as # in HTML. # # # ### -X -x # # Assume X0201 kana in MS-Kanji. With **-X** or without this option, X0201 is # converted into X0208 Kana. With **-x**, try to preserve X0208 kana and do not # convert X0201 kana to X0208. In JIS output, ESC-(-I is used. In EUC output, # SSO is used. # # ### -[B](0-2) # # Assume broken JIS-Kanji input, which lost ESC. Useful when your site is using # old B-News Nihongo patch. # # -B1 # : allows any char after ESC-( or ESC-$. # # -B2 # : forces ASCII after NL. # # # ### -I # # Replacing non iso-2022-jp char into a geta character (substitute character in # Japanese). # # ### -d -c # # Delete r in line feed, Add r in line feed. # # ### -[m](BQN0) # # MIME ISO-2022-JP/ISO8859-1 decode. (DEFAULT) To see ISO8859-1 (Latin-1) -l is # necessary. # # -mB # : Decode MIME base64 encoded stream. Remove header or other part before # # conversion. # # -mQ # : Decode MIME quoted stream. '_' in quoted stream is converted to space. # # -mN # : Non-strict decoding. # # It allows line break in the middle of the base64 encoding. # # -m0 # : No MIME decode. # # # ### -M # # MIME encode. Header style. All ASCII code and control characters are intact. # Kanji conversion is performed before encoding, so this cannot be used as a # picture encoder. # # -MB # : MIME encode Base64 stream. # # -MQ # : Perform quoted encoding. # # # ### -l # # Input and output code is ISO8859-1 (Latin-1) and ISO-2022-JP. **-s**, **-e** # and **-x** are not compatible with this option. # # ### -[L](uwm) # # new line mode Without this option, nkf doesn't convert line breaks. # # -Lu # : unix (LF) # # -Lw # : windows (CRLF) # # -Lm # : mac (CR) # # # ### --fj --unix --mac --msdos --windows # # convert for these system # # ### --jis --euc --sjis --mime --base64 # # convert for named code # # ### --jis-input --euc-input --sjis-input --mime-input --base64-input # # assume input system # # ### --ic=`input codeset` --oc=`output codeset` # # Set the input or output codeset. NKF supports following codesets and those # codeset name are case insensitive. # # ISO-2022-JP # : a.k.a. RFC1468, 7bit JIS, JUNET # # EUC-JP (eucJP-nkf) # : a.k.a. AT&T JIS, Japanese EUC, UJIS # # eucJP-ascii # : a.k.a. x-eucjp-open-19970715-ascii # # eucJP-ms # : a.k.a. x-eucjp-open-19970715-ms # # CP51932 # : Microsoft Version of EUC-JP. # # Shift_JIS # : SJIS, MS-Kanji # # Windows-31J # : a.k.a. CP932 # # UTF-8 # : same as UTF-8N # # UTF-8N # : UTF-8 without BOM # # UTF-8-BOM # : UTF-8 with BOM # # UTF-16 # : same as UTF-16BE # # UTF-16BE # : UTF-16 Big Endian without BOM # # UTF-16BE-BOM # : UTF-16 Big Endian with BOM # # UTF-16LE # : UTF-16 Little Endian without BOM # # UTF-16LE-BOM # : UTF-16 Little Endian with BOM # # UTF-32 # : same as UTF-32BE # # UTF-32BE # : UTF-32 Big Endian without BOM # # UTF-32BE-BOM # : UTF-32 Big Endian with BOM # # UTF-32LE # : UTF-32 Little Endian without BOM # # UTF-32LE-BOM # : UTF-32 Little Endian with BOM # # UTF8-MAC # : NKDed UTF-8, a.k.a. UTF8-NFD (input only) # # # ### --fb-{skip, html, xml, perl, java, subchar} # # Specify the way that nkf handles unassigned characters. Without this option, # --fb-skip is assumed. # # ### --prefix= `escape character` `target character` .. # # When nkf converts to Shift_JIS, nkf adds a specified escape character to # specified 2nd byte of Shift_JIS characters. 1st byte of argument is the escape # character and following bytes are target characters. # # ### --no-cp932ext # # Handle the characters extended in CP932 as unassigned characters. # # ## --no-best-fit-chars # # When Unicode to Encoded byte conversion, don't convert characters which is not # round trip safe. When Unicode to Unicode conversion, with this and -x option, # nkf can be used as UTF converter. (In other words, without this and -x option, # nkf doesn't save some characters) # # When nkf convert string which related to path, you should use this option. # # ### --cap-input # # Decode hex encoded characters. # # ### --url-input # # Unescape percent escaped characters. # # ### -- # # Ignore rest of -option. # module NKF # # Returns guessed encoding of *str* by nkf routine. # def self.guess: (String str) -> Encoding # # Convert *str* and return converted result. Conversion details are specified by # *opt* as String. # # require 'nkf' # output = NKF.nkf("-s", input) # def self.nkf: (String opt, String str) -> String end NKF::ASCII: Encoding NKF::AUTO: nil NKF::BINARY: Encoding NKF::EUC: Encoding NKF::JIS: Encoding # # Release date of nkf # NKF::NKF_RELEASE_DATE: String # # Version of nkf # NKF::NKF_VERSION: String NKF::NOCONV: nil NKF::SJIS: Encoding NKF::UNKNOWN: nil NKF::UTF16: Encoding NKF::UTF32: Encoding NKF::UTF8: Encoding # # Full version string of nkf # NKF::VERSION: String