ivy support chinese pinyin

ivy-support-chinese-pinyin

Dependency: pinyinlib

Add this elisp to your init.el and ivy-read can support pinyin match. The pinyin match will work if your input begin with ! . For example: 你好 can be match by type !nh .

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;;; let `ivy-read' support chinese pinyin
(require 'pinyinlib)

(defun re-builder-pinyin (str)
  (or (pinyin-to-utf8 str)
      (ivy--regex-plus str)
      (ivy--regex-ignore-order)
      ))

(setq ivy-re-builders-alist
      '(
        (t . re-builder-pinyin)
        ))

(defun my-pinyinlib-build-regexp-string (str)
  (progn
    (cond ((equal str ".*")
           ".*")
          (t
           (pinyinlib-build-regexp-string str t))))
  )
(defun my-pinyin-regexp-helper (str)
  (cond ((equal str " ")
         ".*")
        ((equal str "")
         nil)
        (t
         str)))

(defun pinyin-to-utf8 (str)
  (cond ((equal 0 (length str))
         nil)
        ((equal (substring str 0 1) "!")
         (mapconcat 'my-pinyinlib-build-regexp-string
                    (remove nil (mapcar 'my-pinyin-regexp-helper (split-string
                                                                  (replace-regexp-in-string "!" "" str) "")))
                    ""))
        nil))

;; ;; ;;; this function can remove `pinyin' match
;; (defun pinyin-to-utf8 (str)
;;   nil)
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