Make pinyin to Chinese character mapping available to elisp

* leim/Makefile.in: Build the file pinyin.el from pinyin.map.
* lisp/international/titdic-cnv.el (pinyin-convert): New function that
  writes the library pinyin.el, containing a new constant
  `pinyin-character-map'.
* .gitignore: Ignore the generated pinyin.el file.

3 files changed, 38 insertions, 1 deletions

diff --git a/.gitignore b/.gitignore
index 81d3adfb57e..355824f3903 100644
--- a/.gitignore
+++ b/.gitignore
@@ -199,6 +199,7 @@ lisp/international/charscript.el
 lisp/international/cp51932.el
 lisp/international/eucjp-ms.el
 lisp/international/uni-*.el
+lisp/language/pinyin.el
 
 # Documentation.
 *.aux
diff --git a/leim/Makefile.in b/leim/Makefile.in
index c2fc8c41f23..4307d500876 100644
--- a/leim/Makefile.in
+++ b/leim/Makefile.in
@@ -84,7 +84,8 @@ MISC= \
         ${leimdir}/quail/PY.el          \
         ${leimdir}/quail/ZIRANMA.el     \
         ${leimdir}/quail/CTLau.el       \
-        ${leimdir}/quail/CTLau-b5.el
+        ${leimdir}/quail/CTLau-b5.el    \
+        ${srcdir}/../lisp/language/pinyin.el
 
 ## All the generated .el files.
 TIT_MISC = ${TIT_GB} ${TIT_BIG5} ${MISC}
@@ -142,6 +143,9 @@ ${leimdir}/ja-dic/ja-dic.el: $(srcdir)/SKK-DIC/SKK-JISYO.L
         $(AM_V_GEN)$(RUN_EMACS) -batch -l ja-dic-cnv \
           -f batch-skkdic-convert -dir "$(leimdir)/ja-dic" "$<"
 
+${srcdir}/../lisp/language/pinyin.el: ${srcdir}/MISC-DIC/pinyin.map
+        $(AM_V_GEN)${RUN_EMACS} -l titdic-cnv -f pinyin-convert $< $@
+
 
 .PHONY: bootstrap-clean distclean maintainer-clean extraclean
 
diff --git a/lisp/international/titdic-cnv.el b/lisp/international/titdic-cnv.el
index 2ce2c527b95..e6065fb0f76 100644
--- a/lisp/international/titdic-cnv.el
+++ b/lisp/international/titdic-cnv.el
@@ -1203,6 +1203,38 @@ to store generated Quail packages."
         (miscdic-convert filename dir))))
   (kill-emacs 0))
 
+(defun pinyin-convert ()
+  "Convert text file pinyin.map into an elisp library.
+The library is named pinyin.el, and contains the constant
+`pinyin-character-map'."
+  (let ((src-file (car command-line-args-left))
+        (dst-file (cadr command-line-args-left))
+        (coding-system-for-write 'utf-8-unix))
+    (with-temp-file dst-file
+      (insert ";; This file is automatically generated from pinyin.map,\
+ by the\n;; function pinyin-convert.\n\n")
+      (insert "(defconst pinyin-character-map\n'(")
+      (let ((pos (point)))
+        (insert-file-contents src-file)
+        (goto-char pos)
+        (re-search-forward "^[a-z]")
+        (beginning-of-line)
+        (delete-region pos (point))
+        (while (not (eobp))
+          (insert "(\"")
+          (skip-chars-forward "a-z")
+          (insert "\" . \"")
+          (delete-char 1)
+          (end-of-line)
+          (while (= (preceding-char) ?\r)
+            (delete-char -1))
+          (insert "\")")
+          (forward-line 1)))
+      (insert ")\n\"An alist holding correspondences between pinyin syllables\
+ and\nChinese characters.\")\n\n")
+      (insert "(provide 'pinyin)\n"))
+    (kill-emacs 0)))
+
 ;; Prevent "Local Variables" above confusing Emacs.