65 lines
		
	
	
	
		
			2.3 KiB
		
	
	
	
		
			EmacsLisp
		
	
	
	
	
	
			
		
		
	
	
			65 lines
		
	
	
	
		
			2.3 KiB
		
	
	
	
		
			EmacsLisp
		
	
	
	
	
	
;;; ivy-helpers.el --- More interfaces to ivy -*- lexical-binding: t -*-
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;; Author: William Carroll <wpcarro@gmail.com>
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;;; Commentary:
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;; Hopefully to improve my workflows.
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;; Dependencies
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(require 'alist)
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(require 'tuple)
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(require 'string)
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;; Library
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(cl-defun ivy-helpers/kv (prompt kv f)
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  "PROMPT users with the keys in KV and return its corresponding value.  Calls F
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with the key and value from KV."
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  (ivy-read
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   prompt
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   kv
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   :require-match t
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   :action (lambda (entry)
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             (funcall f (car entry) (cdr entry)))))
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(defun ivy-helpers/do-run-external-command (cmd)
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  "Execute the specified CMD and notify the user when it finishes."
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  (message "Starting %s..." cmd)
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  (set-process-sentinel
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   (start-process-shell-command cmd nil cmd)
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   (lambda (process event)
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     (when (string= event "finished\n")
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       (message "%s process finished." process)))))
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(defun ivy-helpers/list-external-commands ()
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  "Creates a list of all external commands available on $PATH while filtering
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NixOS wrappers."
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  (cl-loop
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   for dir in (split-string (getenv "PATH") path-separator)
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   when (and (file-exists-p dir) (file-accessible-directory-p dir))
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   for lsdir = (cl-loop for i in (directory-files dir t)
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                        for bn = (file-name-nondirectory i)
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                        when (and (not (s-contains? "-wrapped" i))
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                                  (not (member bn completions))
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                                  (not (file-directory-p i))
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                                  (file-executable-p i))
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                        collect bn)
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   append lsdir into completions
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   finally return (sort completions 'string-lessp)))
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(defun ivy-helpers/run-external-command ()
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  "Prompts the user with a list of all installed applications and
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lets them select one to launch."
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  (interactive)
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  (let ((external-commands-list (ivy-helpers/list-external-commands)))
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    (ivy-read "Command:" external-commands-list
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              :require-match t
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              :action #'ivy-helpers/do-run-external-command)))
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;;; Code:
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(provide 'ivy-helpers)
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;;; ivy-helpers.el ends here
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