Renamed from skkdic-utl.el.

Provide ja-dic-utl instead of skkdic-utl.
(skkdic-lookup-key): Load ja-dic/ja-dic, not skkdic/skkdic.

1 files changed, 216 insertions, 0 deletions

diff --git a/lisp/international/ja-dic-utl.el b/lisp/international/ja-dic-utl.el
new file mode 100644
index 00000000000..8c5cd8dde44
--- /dev/null
+++ b/lisp/international/ja-dic-utl.el
@@ -0,0 +1,216 @@
+;;; ja-dic-utl.el --- Utilities for handling Japanese dictionary (SKK-JISYO.L)
+
+;; Copyright (C) 1995, 2000 Electrotechnical Laboratory, JAPAN.
+;; Licensed to the Free Software Foundation.
+
+;; Keywords: mule, multilingual, Japanese
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+;; This file provides a generic function to look up a Japanese
+;; dictionary of SKK format.
+;;
+;; SKK is a free Japanese input method running on Mule created by
+;; Masahiko Sato <masahiko@sato.riec.tohoku.ac.jp>.  The Emacs Lisp
+;; library kkc.el provides a facility to convert a Japanese kana
+;; string to a kanji-kana-mixed string by using SKK's dictionary.
+;;
+;; The original SKK dictionary SKK-JISYO.L is converted to ja-dic.el
+;; by ja-dic-cnv.el.  We get entries of the dictionary in four
+;; variables (listed below) by loading that file (or byte-compiled
+;; version ja-dic.elc).
+
+;;; Code:
+
+;; The following four variables are set by loading ja-dic.el[c].
+(defvar skkdic-okuri-ari nil
+  "Nested alist for OKURI-ARI entries of SKK dictionary.")
+
+(defvar skkdic-postfix nil
+  "Nested alist for SETSUBIJI (postfix) entries of SKK dictionary.")
+
+(defvar skkdic-prefix nil
+  "Nested alist SETTOUJI (prefix) entries of SKK dictionary.")
+
+(defvar skkdic-okuri-nasi nil
+  "Nested alist for OKURI-NASI entries of SKK dictionary.")
+
+(defconst skkdic-okurigana-table
+  '((?$B$!(B . ?a) (?$B$"(B . ?a) (?$B$#(B . ?i) (?$B$$(B . ?i) (?$B$%(B . ?u)
+    (?$B$&(B . ?u) (?$B$'(B . ?e) (?$B$((B . ?e) (?$B$)(B . ?o) (?$B$*(B . ?o)
+    (?$B$+(B . ?k) (?$B$,(B . ?g) (?$B$-(B . ?k) (?$B$.(B . ?g) (?$B$/(B . ?k)
+    (?$B$0(B . ?g) (?$B$1(B . ?k) (?$B$2(B . ?g) (?$B$3(B . ?k) (?$B$4(B . ?g)
+    (?$B$5(B . ?s) (?$B$6(B . ?z) (?$B$7(B . ?s) (?$B$8(B . ?j) (?$B$9(B . ?s)
+    (?$B$:(B . ?z) (?$B$;(B . ?s) (?$B$<(B . ?z) (?$B$=(B . ?s) (?$B$>(B . ?z)
+    (?$B$?(B . ?t) (?$B$@(B . ?d) (?$B$A(B . ?t) (?$B$B(B . ?d) (?$B$C(B . ?t)
+    (?$B$D(B . ?t) (?$B$E(B . ?d) (?$B$F(B . ?t) (?$B$G(B . ?d) (?$B$H(B . ?t) (?$B$I(B . ?d)
+    (?$B$J(B . ?n) (?$B$K(B . ?n) (?$B$L(B . ?n) (?$B$M(B . ?n) (?$B$N(B . ?n)
+    (?$B$O(B . ?h) (?$B$P(B . ?b) (?$B$Q(B . ?p) (?$B$R(B . ?h) (?$B$S(B . ?b)
+    (?$B$T(B . ?p) (?$B$U(B . ?h) (?$B$V(B . ?b) (?$B$W(B . ?p) (?$B$X(B . ?h)
+    (?$B$Y(B . ?b) (?$B$Z(B . ?p) (?$B$[(B . ?h) (?$B$\(B . ?b) (?$B$](B . ?p)
+    (?$B$^(B . ?m) (?$B$_(B . ?m) (?$B$`(B . ?m) (?$B$a(B . ?m) (?$B$b(B . ?m)
+    (?$B$c(B . ?y) (?$B$d(B . ?y) (?$B$e(B . ?y) (?$B$f(B . ?y) (?$B$g(B . ?y) (?$B$h(B . ?y)
+    (?$B$i(B . ?r) (?$B$j(B . ?r) (?$B$k(B . ?r) (?$B$l(B . ?r) (?$B$m(B . ?r)
+    (?$B$o(B . ?w) (?$B$p(B . ?w) (?$B$q(B . ?w) (?$B$r(B . ?w)
+    (?$B$s(B . ?n)
+    )
+  "Alist of Okuriganas vs trailing ASCII letters in OKURI-ARI entry.")
+
+(defun skkdic-merge-head-and-tail (heads tails postfix)
+  (let ((min-len 2)
+        l)
+    (while heads
+      (if (or (not postfix)
+              (>= (length (car heads)) min-len))
+          (let ((tail tails))
+            (while tail
+              (if (or postfix
+                      (>= (length (car tail)) min-len))
+                  (setq l (cons (concat (car heads) (car tail)) l)))
+              (setq tail (cdr tail)))))
+      (setq heads (cdr heads)))
+    l))
+
+(defconst skkdic-jisx0208-hiragana-block (nth 1 (split-char ?$B$"(B)))
+
+(defun skkdic-lookup-key (seq len &optional postfix prefer-noun)
+  "Return a list of conversion string for sequence SEQ of length LEN.
+
+SEQ is a vector of Kana characters to be converted by SKK dictionary.
+If LEN is shorter than the length of KEYSEQ, the first LEN keys in SEQ
+are took into account.
+
+Optional 3rd arg POSTFIX non-nil means SETSUBIJI (postfix) are also
+considered to find conversion strings.
+
+Optional 4th arg PREFER-NOUN non-nil means that the conversions
+without okurigana are placed at the head of the returned list."
+  (or skkdic-okuri-nasi
+      (condition-case err
+          (load-library "ja-dic/ja-dic")
+        (error (ding)
+               (with-output-to-temp-buffer "*Help*"
+                 (princ "The library `ja-dic' can't be loaded.
+
+The most common case is that you have not yet installed the library
+included in LEIM (Libraries of Emacs Input Method) which is
+distributed separately from Emacs.
+
+LEIM is available from the same ftp directory as Emacs."))
+               (signal (car err) (cdr err)))))
+
+  (let ((vec (make-vector len 0))
+        (i 0)
+        entry)
+    ;; At first, generate vector VEC from SEQ for looking up SKK
+    ;; alists.  Nth element in VEC corresponds to Nth element in SEQ.
+    ;; The values are decided as follows.
+    ;;   If SEQ[N] is `$B!<(B', VEC[N] is 0,
+    ;;   else if SEQ[N] is a Hiragana character, VEC[N] is:
+    ;;     ((The 2nd position code of SEQ[N]) - 32),
+    ;;   else VEC[N] is 128.
+    (while (< i len)
+      (let ((ch (aref seq i))
+            elts)
+        (if (= ch ?$B!<(B)
+            (aset vec i 0)
+          (setq elts (split-char ch))
+          (if (and (eq (car elts) 'japanese-jisx0208)
+                   (= (nth 1 elts) skkdic-jisx0208-hiragana-block))
+              (aset vec i (- (nth 2 elts) 32))
+            (aset vec i 128))))
+      (setq i (1+ i)))
+
+    ;; Search OKURI-NASI entries.
+    (setq entry (lookup-nested-alist vec skkdic-okuri-nasi len 0 t))
+    (if (consp (car entry))
+        (setq entry (copy-sequence (car entry)))
+      (setq entry nil))
+
+    (if postfix
+        ;; Search OKURI-NASI entries with postfixes.
+        (let ((break (max (- len (car skkdic-postfix)) 1))
+              entry-head entry-postfix entry2)
+          (while (< break len)
+            (if (and (setq entry-head
+                           (lookup-nested-alist vec skkdic-okuri-nasi
+                                                break 0 t))
+                     (consp (car entry-head))
+                     (setq entry-postfix
+                           (lookup-nested-alist vec skkdic-postfix
+                                                len break t))
+                     (consp (car entry-postfix))
+                     (setq entry2 (skkdic-merge-head-and-tail
+                                   (car entry-head) (car entry-postfix) t)))
+                (if entry
+                    (nconc entry entry2)
+                  (setq entry entry2)))
+            (setq break (1+ break)))))
+
+    ;; Search OKURI-NASI entries with prefixes.
+    (let ((break (min (car skkdic-prefix) (- len 2)))
+          entry-prefix entry-tail entry2)
+      (while (> break 0)
+        (if (and (setq entry-prefix
+                       (lookup-nested-alist vec skkdic-prefix break 0 t))
+                 (consp (car entry-prefix))
+                 (setq entry-tail
+                       (lookup-nested-alist vec skkdic-okuri-nasi len break t))
+                 (consp (car entry-tail))
+                 (setq entry2 (skkdic-merge-head-and-tail
+                               (car entry-prefix) (car entry-tail) nil)))
+            (progn
+              (if entry
+                  (nconc entry entry2)
+                (setq entry entry2))))
+        (setq break (1- break))))
+
+    ;; Search OKURI-ARI entries.
+    (let ((okurigana (assq (aref seq (1- len)) skkdic-okurigana-table))
+          orig-element entry2)
+      (if okurigana
+          (progn
+            (setq orig-element (aref vec (1- len)))
+            (aset vec (1- len) (- (cdr okurigana)))
+            (if (and (setq entry2 (lookup-nested-alist vec skkdic-okuri-ari
+                                                       len 0 t))
+                     (consp (car entry2)))
+                (progn
+                  (setq entry2 (copy-sequence (car entry2)))
+                  (let ((l entry2)
+                        (okuri (char-to-string (aref seq (1- len)))))
+                    (while l
+                      (setcar l (concat (car l) okuri))
+                      (setq l (cdr l)))
+                    (if entry
+                        (if prefer-noun
+                            (nconc entry entry2)
+                          (setq entry2 (nreverse entry2))
+                          (nconc entry2 entry)
+                          (setq entry entry2))
+                      (setq entry (nreverse entry2))))))
+            (aset vec (1- len) orig-element))))
+
+    entry))
+
+;;
+(provide 'ja-dic-utl)
+
+;; ja-dic-utl.el ends here