lisp/language/japan-util.el

   1 ;;; japan-util.el --- utilities for Japanese -*- coding: iso-2022-7bit; -*-
   2
   3 ;; Copyright (C) 2001-2014 Free Software Foundation, Inc.
   4 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
   5 ;;   2005, 2006, 2007, 2008, 2009, 2010, 2011
   6 ;;   National Institute of Advanced Industrial Science and Technology (AIST)
   7 ;;   Registration Number H14PRO021
   8
   9 ;; Keywords: mule, multilingual, Japanese
  10
  11 ;; This file is part of GNU Emacs.
  12
  13 ;; GNU Emacs is free software: you can redistribute it and/or modify
  14 ;; it under the terms of the GNU General Public License as published by
  15 ;; the Free Software Foundation, either version 3 of the License, or
  16 ;; (at your option) any later version.
  17
  18 ;; GNU Emacs is distributed in the hope that it will be useful,
  19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ;; GNU General Public License for more details.
  22
  23 ;; You should have received a copy of the GNU General Public License
  24 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  25
  26 ;;; Commentary:
  27
  28 ;;; Code:
  29
  30 ;;;###autoload
  31 (defun setup-japanese-environment-internal ()
  32   ;; By default, we use 'japanese-iso-8bit for file names.  But, the
  33   ;; following prefer-coding-system will override it.
  34   (if (memq system-type '(windows-nt ms-dos cygwin))
  35       (prefer-coding-system 'japanese-shift-jis)
  36     (prefer-coding-system 'japanese-iso-8bit))
  37   (use-cjk-char-width-table 'ja_JP))
  38
  39 (defconst japanese-kana-table
  40   '((?\e$B$"\e(B ?\e$B%"\e(B ?\e(I1\e(B) (?\e$B$$\e(B ?\e$B%$\e(B ?\e(I2\e(B) (?\e$B$&\e(B ?\e$B%&\e(B ?\e(I3\e(B) (?\e$B$(\e(B ?\e$B%(\e(B ?\e(I4\e(B) (?\e$B$*\e(B ?\e$B%*\e(B ?\e(I5\e(B)
  41     (?\e$B$+\e(B ?\e$B%+\e(B ?\e(I6\e(B) (?\e$B$-\e(B ?\e$B%-\e(B ?\e(I7\e(B) (?\e$B$/\e(B ?\e$B%/\e(B ?\e(I8\e(B) (?\e$B$1\e(B ?\e$B%1\e(B ?\e(I9\e(B) (?\e$B$3\e(B ?\e$B%3\e(B ?\e(I:\e(B)
  42     (?\e$B$5\e(B ?\e$B%5\e(B ?\e(I;\e(B) (?\e$B$7\e(B ?\e$B%7\e(B ?\e(I<\e(B) (?\e$B$9\e(B ?\e$B%9\e(B ?\e(I=\e(B) (?\e$B$;\e(B ?\e$B%;\e(B ?\e(I>\e(B) (?\e$B$=\e(B ?\e$B%=\e(B ?\e(I?\e(B)
  43     (?\e$B$?\e(B ?\e$B%?\e(B ?\e(I@\e(B) (?\e$B$A\e(B ?\e$B%A\e(B ?\e(IA\e(B) (?\e$B$D\e(B ?\e$B%D\e(B ?\e(IB\e(B) (?\e$B$F\e(B ?\e$B%F\e(B ?\e(IC\e(B) (?\e$B$H\e(B ?\e$B%H\e(B ?\e(ID\e(B)
  44     (?\e$B$J\e(B ?\e$B%J\e(B ?\e(IE\e(B) (?\e$B$K\e(B ?\e$B%K\e(B ?\e(IF\e(B) (?\e$B$L\e(B ?\e$B%L\e(B ?\e(IG\e(B) (?\e$B$M\e(B ?\e$B%M\e(B ?\e(IH\e(B) (?\e$B$N\e(B ?\e$B%N\e(B ?\e(II\e(B)
  45     (?\e$B$O\e(B ?\e$B%O\e(B ?\e(IJ\e(B) (?\e$B$R\e(B ?\e$B%R\e(B ?\e(IK\e(B) (?\e$B$U\e(B ?\e$B%U\e(B ?\e(IL\e(B) (?\e$B$X\e(B ?\e$B%X\e(B ?\e(IM\e(B) (?\e$B$[\e(B ?\e$B%[\e(B ?\e(IN\e(B)
  46     (?\e$B$^\e(B ?\e$B%^\e(B ?\e(IO\e(B) (?\e$B$_\e(B ?\e$B%_\e(B ?\e(IP\e(B) (?\e$B$`\e(B ?\e$B%`\e(B ?\e(IQ\e(B) (?\e$B$a\e(B ?\e$B%a\e(B ?\e(IR\e(B) (?\e$B$b\e(B ?\e$B%b\e(B ?\e(IS\e(B)
  47     (?\e$B$d\e(B ?\e$B%d\e(B ?\e(IT\e(B) (?\e$B$f\e(B ?\e$B%f\e(B ?\e(IU\e(B) (?\e$B$h\e(B ?\e$B%h\e(B ?\e(IV\e(B)
  48     (?\e$B$i\e(B ?\e$B%i\e(B ?\e(IW\e(B) (?\e$B$j\e(B ?\e$B%j\e(B ?\e(IX\e(B) (?\e$B$k\e(B ?\e$B%k\e(B ?\e(IY\e(B) (?\e$B$l\e(B ?\e$B%l\e(B ?\e(IZ\e(B) (?\e$B$m\e(B ?\e$B%m\e(B ?\e(I[\e(B)
  49     (?\e$B$o\e(B ?\e$B%o\e(B ?\e(I\\e(B) (?\e$B$p\e(B ?\e$B%p\e(B "\e(I2\e(B") (?\e$B$q\e(B ?\e$B%q\e(B "\e(I4\e(B") (?\e$B$r\e(B ?\e$B%r\e(B ?\e(I&\e(B)
  50     (?\e$B$s\e(B ?\e$B%s\e(B ?\e(I]\e(B)
  51     (?\e$B$,\e(B ?\e$B%,\e(B "\e(I6^\e(B") (?\e$B$.\e(B ?\e$B%.\e(B "\e(I7^\e(B") (?\e$B$0\e(B ?\e$B%0\e(B "\e(I8^\e(B") (?\e$B$2\e(B ?\e$B%2\e(B "\e(I9^\e(B") (?\e$B$4\e(B ?\e$B%4\e(B "\e(I:^\e(B")
  52     (?\e$B$6\e(B ?\e$B%6\e(B "\e(I;^\e(B") (?\e$B$8\e(B ?\e$B%8\e(B "\e(I<^\e(B") (?\e$B$:\e(B ?\e$B%:\e(B "\e(I=^\e(B") (?\e$B$<\e(B ?\e$B%<\e(B "\e(I>^\e(B") (?\e$B$>\e(B ?\e$B%>\e(B "\e(I?^\e(B")
  53     (?\e$B$@\e(B ?\e$B%@\e(B "\e(I@^\e(B") (?\e$B$B\e(B ?\e$B%B\e(B "\e(IA^\e(B") (?\e$B$E\e(B ?\e$B%E\e(B "\e(IB^\e(B") (?\e$B$G\e(B ?\e$B%G\e(B "\e(IC^\e(B") (?\e$B$I\e(B ?\e$B%I\e(B "\e(ID^\e(B")
  54     (?\e$B$P\e(B ?\e$B%P\e(B "\e(IJ^\e(B") (?\e$B$S\e(B ?\e$B%S\e(B "\e(IK^\e(B") (?\e$B$V\e(B ?\e$B%V\e(B "\e(IL^\e(B") (?\e$B$Y\e(B ?\e$B%Y\e(B "\e(IM^\e(B") (?\e$B$\\e(B ?\e$B%\\e(B "\e(IN^\e(B")
  55     (?\e$B$Q\e(B ?\e$B%Q\e(B "\e(IJ_\e(B") (?\e$B$T\e(B ?\e$B%T\e(B "\e(IK_\e(B") (?\e$B$W\e(B ?\e$B%W\e(B "\e(IL_\e(B") (?\e$B$Z\e(B ?\e$B%Z\e(B "\e(IM_\e(B") (?\e$B$]\e(B ?\e$B%]\e(B "\e(IN_\e(B")
  56     (?\e$B$!\e(B ?\e$B%!\e(B ?\e(I'\e(B) (?\e$B$#\e(B ?\e$B%#\e(B ?\e(I(\e(B) (?\e$B$%\e(B ?\e$B%%\e(B ?\e(I)\e(B) (?\e$B$'\e(B ?\e$B%'\e(B ?\e(I*\e(B) (?\e$B$)\e(B ?\e$B%)\e(B ?\e(I+\e(B)
  57     (?\e$B$C\e(B ?\e$B%C\e(B ?\e(I/\e(B)
  58     (?\e$B$c\e(B ?\e$B%c\e(B ?\e(I,\e(B) (?\e$B$e\e(B ?\e$B%e\e(B ?\e(I-\e(B) (?\e$B$g\e(B ?\e$B%g\e(B ?\e(I.\e(B)
  59     (?\e$B$n\e(B ?\e$B%n\e(B "\e(I\\e(B")
  60     ("\e$B$&!+\e(B" ?\e$B%t\e(B "\e(I3^\e(B") (nil ?\e$B%u\e(B "\e(I6\e(B") (nil ?\e$B%v\e(B "\e(I9\e(B"))
  61   "Japanese JISX0208 Kana character table.
  62 Each element is of the form (HIRAGANA KATAKANA HANKAKU-KATAKANA), where
  63 HIRAGANA and KATAKANA belong to `japanese-jisx0208',
  64 HANKAKU-KATAKANA belongs to `japanese-jisx0201-kana'.")
  65
  66 ;; Put properties 'katakana, 'hiragana, and 'jix0201 to each Japanese
  67 ;; kana characters for conversion among them.
  68 (let ((l japanese-kana-table)
  69       slot hiragana katakana jisx0201)
  70   (while l
  71     (setq slot (car l)
  72           hiragana (car slot) katakana (nth 1 slot) jisx0201 (nth 2 slot)
  73           l (cdr l))
  74     (if hiragana
  75         (if (stringp hiragana)
  76             (if (> (length hiragana) 1)
  77                 (let ((hira (aref hiragana 0)))
  78                   (put-char-code-property
  79                    hira 'kana-composition
  80                    (cons (cons (aref hiragana 1) katakana)
  81                          (get-char-code-property hira 'kana-composition)))))
  82           (put-char-code-property hiragana 'katakana katakana)
  83           (put-char-code-property hiragana 'jisx0201 jisx0201)))
  84     (when (integerp katakana)
  85       (put-char-code-property katakana 'hiragana hiragana)
  86       (put-char-code-property katakana 'jisx0201 jisx0201))
  87     (if jisx0201
  88         (if (stringp jisx0201)
  89             (if (> (length jisx0201) 1)
  90                 (let ((kana (aref jisx0201 0)))
  91                   (put-char-code-property
  92                    kana 'kana-composition
  93                    (cons (cons (aref jisx0201 1) katakana)
  94                          (get-char-code-property kana 'kana-composition)))))
  95           (put-char-code-property jisx0201 'hiragana hiragana)
  96           (put-char-code-property jisx0201 'katakana katakana)
  97           (put-char-code-property jisx0201 'jisx0208 katakana)))))
  98
  99 (defconst japanese-symbol-table
 100   '((?\\e$B!!\e(B ?\ ) (?\e$B!$\e(B ?, ?\e(I$\e(B) (?\e$B!%\e(B ?. ?\e(I!\e(B) (?\e$B!"\e(B ?, ?\e(I$\e(B) (?\e$B!#\e(B ?. ?\e(I!\e(B) (?\e$B!&\e(B nil ?\e(I%\e(B)
 101     (?\e$B!'\e(B ?:) (?\e$B!(\e(B ?\;) (?\e$B!)\e(B ??) (?\e$B!*\e(B ?!) (?\e$B!+\e(B nil ?\e(I^\e(B) (?\e$B!,\e(B nil ?\e(I_\e(B)
 102     (?\e$B!-\e(B ?') (?\e$B!.\e(B ?`) (?\e$B!0\e(B ?^) (?\e$B!2\e(B ?_) (?\e$B!<\e(B ?- ?\e(I0\e(B) (?\e$B!=\e(B ?-) (?\e$B!>\e(B ?-)
 103     (?\e$B!?\e(B ?/) (?\e$B!@\e(B ?\\) (?\e$B!A\e(B ?~)  (?\e$B!C\e(B ?|) (?\e$B!F\e(B ?`) (?\e$B!G\e(B ?') (?\e$B!H\e(B ?\") (?\e$B!I\e(B ?\")
 104     (?\\e$B!J\e(B ?\() (?\\e$B!K\e(B ?\)) (?\\e$B!N\e(B ?[) (?\\e$B!O\e(B ?]) (?\\e$B!P\e(B ?{) (?\\e$B!Q\e(B ?})
 105     (?\e$B!R\e(B ?<) (?\e$B!S\e(B ?>) (?\\e$B!V\e(B nil ?\\e(I"\e(B) (?\\e$B!W\e(B nil ?\\e(I#\e(B)
 106     (?\e$B!\\e(B ?+) (?\e$B!]\e(B ?-) (?\e$B!a\e(B ?=) (?\e$B!c\e(B ?<) (?\e$B!d\e(B ?>)
 107     (?\e$B!l\e(B ?') (?\e$B!m\e(B ?\") (?\e$B!o\e(B ?\\) (?\e$B!p\e(B ?$) (?\e$B!s\e(B ?%) (?\e$B!t\e(B ?#) (?\e$B!u\e(B ?&) (?\e$B!v\e(B ?*)
 108     (?\e$B!w\e(B ?@)
 109     ;; cp932-2-byte
 110     (#x2015 ?-) (#xFF5E ?~) (#xFF0D ?-))
 111   "Japanese JISX0208 and CP932 symbol character table.
 112   Each element is of the form (SYMBOL ASCII HANKAKU), where SYMBOL
 113 belongs to `japanese-jisx0208' or `cp932', ASCII belongs to `ascii',
 114 and HANKAKU belongs to `japanese-jisx0201-kana'.")
 115
 116 ;; Put properties 'jisx0208, 'jisx0201, and 'ascii to each Japanese
 117 ;; symbol and ASCII characters for conversion among them.
 118 (let ((l japanese-symbol-table)
 119       slot jisx0208 ascii jisx0201)
 120   (while l
 121     (setq slot (car l)
 122           jisx0208 (car slot) ascii (nth 1 slot) jisx0201 (nth 2 slot)
 123           l (cdr l))
 124     (if ascii
 125         (progn
 126           (put-char-code-property jisx0208 'ascii ascii)
 127           (if (encode-char jisx0208 'japanese-jisx0208)
 128               (put-char-code-property ascii 'jisx0208 jisx0208))))
 129     (if jisx0201
 130         (progn
 131           (put-char-code-property jisx0208 'jisx0201 jisx0201)
 132           (if (encode-char jisx0208 'japanese-jisx0208)
 133               (put-char-code-property jisx0201 'jisx0208 jisx0208))))))
 134
 135 (defconst japanese-alpha-numeric-table
 136   '((?\e$B#0\e(B . ?0) (?\e$B#1\e(B . ?1) (?\e$B#2\e(B . ?2) (?\e$B#3\e(B . ?3) (?\e$B#4\e(B . ?4)
 137     (?\e$B#5\e(B . ?5) (?\e$B#6\e(B . ?6) (?\e$B#7\e(B . ?7) (?\e$B#8\e(B . ?8) (?\e$B#9\e(B . ?9)
 138     (?\e$B#A\e(B . ?A) (?\e$B#B\e(B . ?B) (?\e$B#C\e(B . ?C) (?\e$B#D\e(B . ?D) (?\e$B#E\e(B . ?E)
 139     (?\e$B#F\e(B . ?F) (?\e$B#G\e(B . ?G) (?\e$B#H\e(B . ?H) (?\e$B#I\e(B . ?I) (?\e$B#J\e(B . ?J)
 140     (?\e$B#K\e(B . ?K) (?\e$B#L\e(B . ?L) (?\e$B#M\e(B . ?M) (?\e$B#N\e(B . ?N) (?\e$B#O\e(B . ?O)
 141     (?\e$B#P\e(B . ?P) (?\e$B#Q\e(B . ?Q) (?\e$B#R\e(B . ?R) (?\e$B#S\e(B . ?S) (?\e$B#T\e(B . ?T)
 142     (?\e$B#U\e(B . ?U) (?\e$B#V\e(B . ?V) (?\e$B#W\e(B . ?W) (?\e$B#X\e(B . ?X) (?\e$B#Y\e(B . ?Y) (?\e$B#Z\e(B . ?Z)
 143     (?\e$B#a\e(B . ?a) (?\e$B#b\e(B . ?b) (?\e$B#c\e(B . ?c) (?\e$B#d\e(B . ?d) (?\e$B#e\e(B . ?e)
 144     (?\e$B#f\e(B . ?f) (?\e$B#g\e(B . ?g) (?\e$B#h\e(B . ?h) (?\e$B#i\e(B . ?i) (?\e$B#j\e(B . ?j)
 145     (?\e$B#k\e(B . ?k) (?\e$B#l\e(B . ?l) (?\e$B#m\e(B . ?m) (?\e$B#n\e(B . ?n) (?\e$B#o\e(B . ?o)
 146     (?\e$B#p\e(B . ?p) (?\e$B#q\e(B . ?q) (?\e$B#r\e(B . ?r) (?\e$B#s\e(B . ?s) (?\e$B#t\e(B . ?t)
 147     (?\e$B#u\e(B . ?u) (?\e$B#v\e(B . ?v) (?\e$B#w\e(B . ?w) (?\e$B#x\e(B . ?x) (?\e$B#y\e(B . ?y) (?\e$B#z\e(B . ?z))
 148   "Japanese JISX0208 alpha numeric character table.
 149 Each element is of the form (ALPHA-NUMERIC ASCII), where ALPHA-NUMERIC
 150 belongs to `japanese-jisx0208', ASCII belongs to `ascii'.")
 151
 152 ;; Put properties 'jisx0208 and 'ascii to each Japanese alpha numeric
 153 ;; and ASCII characters for conversion between them.
 154 (let ((l japanese-alpha-numeric-table)
 155       slot jisx0208 ascii)
 156   (while l
 157     (setq slot (car l)
 158           jisx0208 (car slot) ascii (cdr slot)
 159           l (cdr l))
 160     (put-char-code-property jisx0208 'ascii ascii)
 161     (put-char-code-property ascii 'jisx0208 jisx0208)))
 162
 163 ;; Convert string STR by FUNC and return a resulting string.
 164 (defun japanese-string-conversion (str func &rest args)
 165   (let ((buf (get-buffer-create " *Japanese work*")))
 166     (with-current-buffer buf
 167       (erase-buffer)
 168       (insert str)
 169       (apply func 1 (point) args)
 170       (buffer-string))))
 171
 172 ;;;###autoload
 173 (defun japanese-katakana (obj &optional hankaku)
 174   "Convert argument to Katakana and return that.
 175 The argument may be a character or string.  The result has the same type.
 176 The argument object is not altered--the value is a copy.
 177 Optional argument HANKAKU t means to convert to `hankaku' Katakana
 178  \(`japanese-jisx0201-kana'), in which case return value
 179  may be a string even if OBJ is a character if two Katakanas are
 180  necessary to represent OBJ."
 181   (if (stringp obj)
 182       (japanese-string-conversion obj 'japanese-katakana-region hankaku)
 183     (or (get-char-code-property obj (if hankaku 'jisx0201 'katakana))
 184         obj)))
 185
 186 ;;;###autoload
 187 (defun japanese-hiragana (obj)
 188   "Convert argument to Hiragana and return that.
 189 The argument may be a character or string.  The result has the same type.
 190 The argument object is not altered--the value is a copy."
 191   (if (stringp obj)
 192       (japanese-string-conversion obj 'japanese-hiragana-region)
 193     (or (get-char-code-property obj 'hiragana)
 194         obj)))
 195
 196 ;;;###autoload
 197 (defun japanese-hankaku (obj &optional ascii-only)
 198   "Convert argument to `hankaku' and return that.
 199 The argument may be a character or string.  The result has the same type.
 200 The argument object is not altered--the value is a copy.
 201 Optional argument ASCII-ONLY non-nil means to return only ASCII character."
 202   (if (stringp obj)
 203       (japanese-string-conversion obj 'japanese-hankaku-region ascii-only)
 204     (or (and (not ascii-only)
 205              (get-char-code-property obj 'jisx0201))
 206         (get-char-code-property obj 'ascii)
 207         obj)))
 208
 209 ;;;###autoload
 210 (defun japanese-zenkaku (obj)
 211   "Convert argument to `zenkaku' and return that.
 212 The argument may be a character or string.  The result has the same type.
 213 The argument object is not altered--the value is a copy."
 214   (if (stringp obj)
 215       (japanese-string-conversion obj 'japanese-zenkaku-region)
 216     (or (get-char-code-property obj 'jisx0208)
 217         obj)))
 218
 219 (defun japanese-replace-region (from to string)
 220   "Replace the region specified by FROM and TO to STRING."
 221   (goto-char from)
 222   (insert string)
 223   (delete-char (- to from)))
 224
 225 ;;;###autoload
 226 (defun japanese-katakana-region (from to &optional hankaku)
 227   "Convert Japanese `hiragana' chars in the region to `katakana' chars.
 228 Optional argument HANKAKU t means to convert to `hankaku katakana' character
 229 of which charset is `japanese-jisx0201-kana'."
 230   (interactive "r\nP")
 231   (save-restriction
 232     (narrow-to-region from to)
 233     (save-excursion
 234       (goto-char (point-min))
 235       (while (re-search-forward "\\cH\\|\\cK" nil t)
 236         (let* ((kana (preceding-char))
 237                (composition
 238                 (and (not hankaku)
 239                      (get-char-code-property kana 'kana-composition)))
 240                next slot)
 241           (if (and composition (setq slot (assq (following-char) composition)))
 242               (japanese-replace-region (match-beginning 0) (1+ (point))
 243                                        (cdr slot))
 244             (let ((kata (get-char-code-property
 245                          kana (if hankaku 'jisx0201 'katakana))))
 246               (if kata
 247                   (japanese-replace-region (match-beginning 0) (point)
 248                                            kata)))))))))
 249
 250
 251 ;;;###autoload
 252 (defun japanese-hiragana-region (from to)
 253   "Convert Japanese `katakana' chars in the region to `hiragana' chars."
 254   (interactive "r")
 255   (save-restriction
 256     (narrow-to-region from to)
 257     (save-excursion
 258       (goto-char (point-min))
 259       (while (re-search-forward "\\cK\\|\\ck" nil t)
 260         (let* ((kata (preceding-char))
 261                (composition (get-char-code-property kata 'kana-composition))
 262                next slot)
 263           (if (and composition (setq slot (assq (following-char) composition)))
 264               (japanese-replace-region (match-beginning 0) (1+ (point))
 265                                        (get-char-code-property
 266                                         (cdr slot) 'hiragana))
 267             (let ((hira (get-char-code-property kata 'hiragana)))
 268               (if hira
 269                   (japanese-replace-region (match-beginning 0) (point)
 270                                            hira)))))))))
 271
 272 ;;;###autoload
 273 (defun japanese-hankaku-region (from to &optional ascii-only)
 274   "Convert Japanese `zenkaku' chars in the region to `hankaku' chars.
 275 `Zenkaku' chars belong to `japanese-jisx0208'
 276 `Hankaku' chars belong to `ascii' or `japanese-jisx0201-kana'.
 277 Optional argument ASCII-ONLY non-nil means to convert only to ASCII char."
 278   (interactive "r\nP")
 279   (save-restriction
 280     (narrow-to-region from to)
 281     (save-excursion
 282       (goto-char (point-min))
 283       (while (re-search-forward "\\cj" nil t)
 284         (let* ((zenkaku (preceding-char))
 285                (hankaku (or (and (not ascii-only)
 286                                  (get-char-code-property zenkaku 'jisx0201))
 287                             (get-char-code-property zenkaku 'ascii))))
 288           (if hankaku
 289               (japanese-replace-region (match-beginning 0) (match-end 0)
 290                                        hankaku)))))))
 291
 292 ;;;###autoload
 293 (defun japanese-zenkaku-region (from to &optional katakana-only)
 294   "Convert hankaku' chars in the region to Japanese `zenkaku' chars.
 295 `Zenkaku' chars belong to `japanese-jisx0208'
 296 `Hankaku' chars belong to `ascii' or `japanese-jisx0201-kana'.
 297 Optional argument KATAKANA-ONLY non-nil means to convert only KATAKANA char."
 298   (interactive "r\nP")
 299   (save-restriction
 300     (narrow-to-region from to)
 301     (save-excursion
 302       (goto-char (point-min))
 303       (while (or (and katakana-only
 304                       (re-search-forward "\\ck" nil t))
 305                  (and (not katakana-only)
 306                       (re-search-forward "\\ca\\|\\ck" nil t)))
 307         (let* ((hankaku (preceding-char))
 308                (composition (get-char-code-property hankaku 'kana-composition))
 309                next slot)
 310           (if (and composition (setq slot (assq (following-char) composition)))
 311               (japanese-replace-region (match-beginning 0) (1+ (point))
 312                                        (cdr slot))
 313             (let ((zenkaku (japanese-zenkaku hankaku)))
 314               (if zenkaku
 315                   (japanese-replace-region (match-beginning 0) (match-end 0)
 316                                            zenkaku)))))))))
 317
 318 ;;;###autoload
 319 (defun read-hiragana-string (prompt &optional initial-input)
 320   "Read a Hiragana string from the minibuffer, prompting with string PROMPT.
 321 If non-nil, second arg INITIAL-INPUT is a string to insert before reading."
 322   (read-multilingual-string prompt initial-input "japanese-hiragana"))
 323
 324 ;;
 325 (provide 'japan-util)
 326
 327 ;;; japan-util.el ends here