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;;; ztree-util.el --- Auxiliary utilities for the ztree package -*- lexical-binding: t; -*-
;; Copyright (C) 2013-2016 Free Software Foundation, Inc.
;;
;; Author: Alexey Veretennikov <alexey.veretennikov@gmail.com>
;;
;; Created: 2013-11-11
;;
;; Keywords: files tools
;; URL: https://github.com/fourier/ztree
;; Compatibility: GNU Emacs 24.x
;;
;; 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
;;
;;; Commentary:
;;; Code:
(defun ztree-find (where which)
"Find element of the list WHERE matching predicate WHICH."
(catch 'found
(dolist (elt where)
(when (funcall which elt)
(throw 'found elt)))
nil))
(defun ztree-filter (condp lst)
"Filter out elements not satisfying predicate CONDP in the list LST.
Taken from http://www.emacswiki.org/emacs/ElispCookbook#toc39"
(delq nil
(mapcar (lambda (x) (and (funcall condp x) x)) lst)))
(defun ztree-printable-string (string)
"Strip newline character from file names, like `Icon\n'.
Argument STRING string to process.'."
(replace-regexp-in-string "\n" "" string))
(defun ztree-file-short-name (file)
"By given FILE name return base file/directory name.
Taken from http://lists.gnu.org/archive/html/emacs-devel/2011-01/msg01238.html"
(let* ((dir (directory-file-name file))
(simple-dir (file-name-nondirectory dir)))
;; check if the root directory
(if (string= "" simple-dir)
dir
(ztree-printable-string simple-dir))))
(defun ztree-car-atom (value)
"Return VALUE if value is an atom, otherwise (car value) or nil.
Used since `car-safe' returns nil for atoms"
(if (atom value) value (car value)))
(defun ztree-insert-with-face (text face)
"Insert TEXT with the FACE provided."
(let ((start (point)))
(insert text)
(put-text-property start (point) 'face face)))
(defun ztree-untrampify-filename (file)
"Return FILE as the local file name."
(or (file-remote-p file 'localname) file))
(defun ztree-quotify-string (str)
"Surround STR with quotes."
(concat "\"" str "\""))
(defun ztree-same-host-p (file1 file2)
"Return t if FILE1 and FILE2 are on the same host."
(let ((file1-remote (file-remote-p file1))
(file2-remote (file-remote-p file2)))
(string-equal file1-remote file2-remote)))
(defun ztree-scroll-to-line (line)
"Recommended way to set the cursor to specified LINE."
(goto-char (point-min))
(forward-line (1- line)))
(provide 'ztree-util)
;;; ztree-util.el ends here
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