95 lines
2.8 KiB
EmacsLisp
95 lines
2.8 KiB
EmacsLisp
;;; +util.el --- utility whatevers -*- lexical-binding: t -*-
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;;; Commentary:
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;; This file is going to be my version of like, subr.el -- lots of
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;; random shit that all goes in here.
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;;; Code:
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(require 'cl-lib)
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(defgroup +util nil
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"Utility whatevers."
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:group 'convenience)
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;;; STRINGS
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(defcustom +string-default-alignment 'left
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"Default alignment."
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:type '(choice (const :tag "Left" 'left)
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(const :tag "Right" 'right)))
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;; stolen from s.el
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(defun +string-repeat (n s)
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"Make a string of S repeated N times."
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(declare (pure t)
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(side-effect-free t))
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(let (ss)
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(while (> n 0)
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(setq ss (cons s ss)
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n (1- n)))
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(apply 'concat ss)))
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(defun +string-truncate (s length &optional ellipsis alignment)
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"Return S, shortened to LENGTH including ELLIPSIS and aligned to ALIGNMENT.
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ELLIPSIS defaults to `truncate-string-ellipsis', or \"...\".
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ALIGNMENT defaults to `+string-default-alignment'."
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(declare (pure t)
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(side-effect-free t))
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(let ((ellipsis (or ellipsis truncate-string-ellipsis "..."))
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(alignment (or alignment +string-default-alignment)))
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(if (> (length s) length)
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(format "%s%s"
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(substring s 0 (- length (length ellipsis)))
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ellipsis)
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s)))
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(cl-defun +string-align (s len
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&key
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(before "") (after "") (fill " ")
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(ellipsis (or truncate-string-ellipsis "..."))
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(alignment +string-default-alignment))
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"Print S to fit in LEN characters.
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Optional arguments BEFORE and AFTER specify strings to go on
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either side of S.
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FILL is the string to fill extra space with (default \" \").
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ELLIPSIS is the string to show when S is too long to fit (default
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`truncate-string-ellipsis' or \"...\"). If nil, don't truncate
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the string.
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ALIGNMENT can be one of these:
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- nil: align to `+string-default-alignment'
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- `left': align left
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- `right': align right"
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(let* ((s-length (length s))
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(before-length (length before))
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(after-length (length after))
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(max-length (- len (+ before-length after-length)))
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(left-over (max 0 (- max-length s-length)))
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(filler (+string-repeat left-over fill)))
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(format "%s%s%s%s%s"
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before
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(if (eq alignment 'left) "" filler)
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(if ellipsis (+string-truncate s max-length ellipsis alignment) s)
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(if (eq alignment 'right) "" filler)
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after)))
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;;; COMMANDS
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(defun +dos2unix (buffer)
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"Replace \r\n with \n in BUFFER."
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(interactive "*b")
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(save-excursion
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(with-current-buffer buffer
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(goto-char (point-min))
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(while (search-forward (string ?\C-m ?\C-j) nil t)
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(replace-match (string ?\C-j) nil t)))))
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(provide '+util)
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;;; +util.el ends here
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