46 lines
1.7 KiB
EmacsLisp
46 lines
1.7 KiB
EmacsLisp
;; Copyright (c) 2014 Microsoft Corporation. All rights reserved.
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;; Released under Apache 2.0 license as described in the file LICENSE.
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;;
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;; Author: Soonho Kong
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;;
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(require 'cl-lib)
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(defun lean-concat-paths (&rest seq)
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"Concatenate paths"
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(cl-reduce (lambda (p1 p2) (concat (file-name-as-directory p1) p2))
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seq))
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(defun lean-find-file-upward (file-name &optional dir-name)
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"Try to find a file in a (current) directory or its parent directories."
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(let* ((dir-name (or dir-name (file-name-directory (buffer-file-name))))
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(parent-dir-name (file-name-directory (directory-file-name dir-name)))
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(full-name (lean-concat-paths dir-name file-name)))
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(cond ((file-exists-p full-name) full-name)
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((string= dir-name parent-dir-name) nil)
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(t (lean-find-file-upward file-name parent-dir-name)))))
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(defun lean-grab-line (n)
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"Return the contents of n-th line at the current buffer"
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(let* ((cur-line-number (line-number-at-pos))
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(rel-line-number (1+ (- n cur-line-number)))
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(p1 (line-beginning-position rel-line-number))
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(p2 (line-end-position rel-line-number)))
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(buffer-substring-no-properties p1 p2)))
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(defun lean-get-rootdir ()
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(or
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lean-rootdir
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(error
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(concat "'lean-rootdir' is not defined."
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"Please have (customize-set-variable 'lean-rootdir \"~/work/lean\") "
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"in your emacs configuration. "
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"Also make sure that your (custom-set-variable ...) "
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" comes before (require 'lean-mode)"))))
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(defun lean-get-executable (exe-name)
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"Return fullpath of lean executable"
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(let ((lean-bin-dir-name "bin"))
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(lean-concat-paths (lean-get-rootdir) lean-bin-dir-name exe-name)))
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(provide 'lean-util)
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