tvl-depot/configs/shared/emacs/.emacs.d/wpc/functions.el

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;; functions.el --- Helper functions for my Emacs development -*- lexical-binding: t -*-
;; Author: William Carroll <wpcarro@gmail.com>
;;; Commentary:
;; This file hopefully contains friendly APIs that making ELisp development more enjoyable.
;;; Code:
;; TODO: clean up this file so this isn't necessary
(setq evil-want-integration nil)
(require 'evil)
(require 'projectile)
(require 'paredit)
(require 'term)
(require 'f)
(require 'yasnippet)
(require 'ido)
(defun wpc/evil-window-vsplit-right ()
(interactive)
(evil-window-vsplit)
(windmove-right))
(defun wpc/evil-window-split-down ()
(interactive)
(evil-window-split)
(windmove-down))
(defun wpc/reindent-defun-and-align-clojure-map ()
(interactive)
(call-interactively #'paredit-reindent-defun)
(call-interactively #'clojure-align))
(defun wpc/find-file ()
"Prefer project-based file-finding if inside of project; otherwise gracefully fallback."
(interactive)
(with-current-buffer (current-buffer)
(if (projectile-project-p)
(call-interactively #'projectile-find-file)
(call-interactively #'find-file))))
(defun wpc/find-or-create-js-test ()
(->> buffer-file-name
(s-chop-suffix ".js")
(s-append ".test.js")
(find-file)))
(defun wpc/find-or-create-js-module ()
(->> buffer-file-name
(s-chop-suffix ".test.js")
(s-append ".js")
(find-file)))
(defun wpc/find-or-create-js-store ()
(->> buffer-file-name
(s-replace "index.js" "store.js")
(find-file)))
(defun wpc/find-or-create-js-component ()
(->> buffer-file-name
(s-replace "store.js" "index.js")
(find-file)))
(defun wpc/bind-ido-keys ()
"Adds custom KBDs for ido. This function is recommended in the ido source code."
(define-key ido-completion-map (kbd "<tab>") #'ido-next-match)
(define-key ido-completion-map (kbd "<backtab>") #'ido-prev-match))
(defun wpc/toggle-between-js-test-and-module ()
"Toggle between a Javascript test or module."
(interactive)
(if (s-ends-with? ".test.js" buffer-file-name)
(wpc/find-or-create-js-module)
(if (s-ends-with? ".js" buffer-file-name)
(wpc/find-or-create-js-test)
(message "Not in a Javascript file. Exiting..."))))
(defun wpc/toggle-between-js-component-and-store ()
"Toggle between a React component and its Redux store."
(interactive)
(if (s-ends-with? "index.js" buffer-file-name)
(wpc/find-or-create-js-store)
(if (or (s-ends-with? "store.js" buffer-file-name)
(s-ends-with? "store.test.js" buffer-file-name))
(wpc/find-or-create-js-component)
(message "Not in a React/Redux file. Exiting..."))))
(defun wpc/read-file-as-string (filename)
(with-temp-buffer
(insert-file-contents filename)
(s-trim (buffer-string))))
(defun wpc/create-snippet ()
"Creates a window split and then opens the Yasnippet editor."
(interactive)
(evil-window-vsplit)
(call-interactively #'yas-new-snippet))
(defun wpc/edit-init-el ()
"Creates a window split and then edits the init.el file."
(interactive)
(evil-window-vsplit)
(find-file "~/.emacs.d/init.el"))
(defun wpc/jump-to-parent-file ()
"Jumps to a React store or component's parent file. Useful for store or index file."
(interactive)
(-> buffer-file-name
f-dirname
(f-join "..")
(f-join (f-filename buffer-file-name))
find-file))
(defun wpc/tmux-emacs-windmove (dir)
"Move windows in a Tmux-friendly way."
(let* ((dir->opts '((left . ("-L" . windmove-left))
(right . ("-R" . windmove-right))
(above . ("-U" . windmove-up))
(below . ("-D" . windmove-down))))
(opts (alist-get dir dir->opts))
(tmux-opt (car opts))
(emacs-fn (cdr opts)))
(if (window-in-direction dir)
(funcall emacs-fn)
(shell-command (format "tmux select-pane %s" tmux-opt)))))
(defun wpc/tmux-emacs-windmove-left ()
(interactive)
(wpc/tmux-emacs-windmove 'left))
(defun wpc/tmux-emacs-windmove-right ()
(interactive)
(wpc/tmux-emacs-windmove 'right))
(defun wpc/tmux-emacs-windmove-up ()
(interactive)
(wpc/tmux-emacs-windmove 'above))
(defun wpc/tmux-emacs-windmove-down ()
(interactive)
(wpc/tmux-emacs-windmove 'below))
(defun wpc/get-window-by-buffername (buffername)
"Finds a window by the name of the buffer it's hosting."
(let ((buffer (get-buffer buffername)))
(when buffer
(get-buffer-window buffer))))
(defun wpc/add-earmuffs (x)
"Returns X surrounded by asterisks."
(format "*%s*" x))
(defun wpc/get-default-shell ()
(or explicit-shell-file-name
(getenv "SHELL")
(getenv "ESHELL")))
(defun wpc/find-terminal-buffer ()
(get-buffer (wpc/add-earmuffs wpc/terminal-name)))
(defun wpc/find-terminal-window ()
(wpc/get-window-by-buffername (wpc/add-earmuffs wpc/terminal-name)))
(defun wpc/create-terminal-session ()
(wpc/evil-window-vsplit-right)
(ansi-term (wpc/get-default-shell) wpc/terminal-name))
(defun wpc/toggle-terminal ()
"Toggles a custom terminal session in Emacs."
(interactive)
(let ((window (wpc/find-terminal-window)))
(if window
(delete-window window)
(wpc/find-or-create-terminal))))
(defun wpc/find-or-create-terminal ()
(let ((buffer (wpc/find-terminal-buffer)))
(if buffer
(display-buffer buffer)
(wpc/create-terminal-session))))
(defun wpc/put-file-name-on-clipboard ()
"Put the current file name on the clipboard"
(interactive)
(let ((filename (if (equal major-mode 'dired-mode)
default-directory
(buffer-file-name))))
(when filename
(with-temp-buffer
(insert filename)
(clipboard-kill-region (point-min) (point-max)))
(message filename))))
(defun wpc/evil-replace-under-point ()
"Faster than typing %s//thing/g"
(interactive)
(save-excursion
(evil-ex (concat "%s/\\b" (symbol-name (symbol-at-point)) "\\b/"))))
(defun wpc/disable-linum-mode ()
"Convenience function defined to make adding hooks easier without a lambda."
(linum-mode -1))
(defun wpc/disable-company-mode ()
"Convenience function defined to make adding hooks easier without a lambda."
(company-mode -1))
(defun wpc/toggle-term-mode ()
"Toggle between term-line-mode and temr-char-mode."
(if (term-in-line-mode)
(term-char-mode)
(term-line-mode)))
(defun buffer-dirname ()
"Return the directory name of the current buffer as a string."
(->> buffer-file-name
f-dirname
f-filename))
(provide 'functions)
;;; functions.el ends here