mirror of https://codeberg.org/cage/tinmop/
676 lines
27 KiB
Common Lisp
676 lines
27 KiB
Common Lisp
;; tinmop: an humble gemini and pleroma client
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;; Copyright (C) 2020 cage
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;; This program is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;; derived from
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;; niccolo': a chemicals inventory
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;; Copyright (C) 2016 Universita' degli Studi di Palermo
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;; This program is free software: you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License as
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;; published by the Free Software Foundation, version 3 of the
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;; License, or (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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(in-package :text-utils)
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(alexandria:define-constant +float-regexp+ "-?[0-9]+(\\.[0-9]+([eE]-?[0-9]+)?)?" :test 'string=)
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(alexandria:define-constant +integer-regexp+ "0|[1-9][0-9]+|[1-9]" :test 'string=)
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(defun uchar-length (leading-byte)
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(let ((ones (do* ((ct 7 (1- ct))
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(bit (ldb (byte 1 ct) leading-byte)
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(ldb (byte 1 ct) leading-byte))
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(ones-ct 0))
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((= bit 0) ones-ct)
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(incf ones-ct))))
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(cond
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((= ones 0)
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1)
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((= ones 1)
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0)
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(t
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ones))))
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(defun utf8-encoded-p (file)
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(with-open-file (stream file :direction :input
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:if-does-not-exist :error
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::element-type '(unsigned-byte 8))
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(let* ((leading-byte (read-byte stream))
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(leading-byte-length (uchar-length leading-byte)))
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(cond
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((= leading-byte-length 0)
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nil)
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((> leading-byte-length 6)
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nil)
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(t
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(loop for i from 0 below (1- leading-byte-length) do
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(let* ((ch (read-byte stream))
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(ll (uchar-length ch)))
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(when (> ll 0)
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(return-from utf8-encoded-p nil))))
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t)))))
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(defgeneric to-s (object))
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(defmethod to-s ((object string))
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object)
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(defmethod to-s ((object vector))
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(coerce object 'string))
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(defmethod to-s ((object character))
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(string object))
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(defmethod to-s (object)
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(format nil "~a" object))
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(defun clean-unprintable-chars (string)
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(cl-ppcre:scan-to-strings "[\\p{Letter}\\p{Number}\\p{Punctuation}]+" string))
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(defun strcat (&rest chunks)
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(declare (optimize (debug 0) (safety 0) (speed 3)))
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(strcat* chunks))
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(defun strcat* (chunks)
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(declare (optimize (debug 0) (safety 0) (speed 3)))
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(reduce (lambda (a b) (concatenate 'string a b)) chunks))
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(defun strip-prefix (string prefix)
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(let ((re (strcat "^" prefix)))
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(cl-ppcre:regex-replace re string "")))
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(defun strip-withespaces (string)
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(let ((re "\\s"))
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(cl-ppcre:regex-replace re string "")))
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(defun common-prefix (&rest strings)
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(when strings
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(let* ((prefix-count 0)
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(sorted-strings (num:shellsort strings #'(lambda (a b) (> (length a)
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(length b)))))
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(pivot-string (alexandria:first-elt sorted-strings))
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(actual-strings (rest sorted-strings))
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(res (string (alexandria:first-elt pivot-string))))
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(labels ((advance-res ()
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(incf prefix-count)
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(setf res (strcat res (string (elt pivot-string prefix-count)))))
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(%advance ()
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(loop for i in actual-strings do
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(when (not (cl-ppcre:scan (strcat "^" res) i))
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(setf res (subseq res 0 (1- (length res))))
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(return-from %advance nil)))
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(when (< (1+ prefix-count)
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(length pivot-string))
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(advance-res)
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(%advance))))
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(%advance)
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res))))
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(defgeneric join-with-strings (object junction))
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(defmethod join-with-strings ((object sequence) (junction string))
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(reduce #'(lambda (a b) (text-utils:strcat a junction b)) object))
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(defmethod join-with-strings ((object sequence) (junction character))
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(join-with-strings object (string junction)))
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(defmethod join-with-strings ((object string) junction)
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(declare (ignore junction))
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object)
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(defun join-with-strings* (junction &rest strings)
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(apply #'join-with-strings strings (list junction)))
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(defun split-words (text)
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(cl-ppcre:split "\\p{White_Space}" text))
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(defun split-lines (text)
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(cl-ppcre:split "[\\n\\r]" text))
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(defun min-length-word (text)
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(loop for i in (split-words text)
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minimizing (length i) into min
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finally (return min)))
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(defun max-length-word (text)
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(loop for i in (split-words text)
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maximizing (length i) into max
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finally (return max)))
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(defun basename (file)
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(let ((pos (cl-ppcre:scan "\\." file)))
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(if pos
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(subseq file 0 pos)
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file)))
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(defun wrap-with (s wrapper)
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(strcat wrapper s wrapper))
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(defun build-string (length &optional (initial-element #\Space))
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(make-string length :initial-element initial-element))
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(defun right-padding (str total-size &key (padding-char #\Space))
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(strcat str
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(make-string (max 0 (- total-size (length str)))
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:initial-element padding-char)))
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(defun right-padding-suffix (str total-size &key (padding-char #\Space))
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(make-string (max 0 (- total-size (length str)))
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:initial-element padding-char))
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(defun left-padding (str total-size &key (padding-char #\Space))
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(strcat (make-string (max 0 (- total-size (length str)))
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:initial-element padding-char)
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str))
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(defun left-padding-prefix (str total-size &key (padding-char #\Space))
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(make-string (max 0 (- total-size (length str)))
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:initial-element padding-char))
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(defun ellipsize (string len &key (truncate-string "..."))
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"If 'string''s length is bigger than 'len', cut the last characters
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out. Also replaces the last n characters (where n is the length of
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'truncate-string') of the shortened string with
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'truncate-string'. It defaults to \"...\", but can be nil or the
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empty string."
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(let ((string-len (length string)))
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(cond
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((<= string-len len)
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string)
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((< len
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(length truncate-string))
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(subseq string 0 len))
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(t
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(strcat (subseq string 0 (- len (length truncate-string)))
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truncate-string)))))
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(defgeneric string-empty-p (s))
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(defmethod string-empty-p (s)
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(error 'type-error
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:datum s
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:expected-type 'string))
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(defmethod string-empty-p ((s null))
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(declare (ignore s))
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t)
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(defmethod string-empty-p ((s string))
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(string= s ""))
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(defun string-not-empty-p (s)
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(not (string-empty-p s)))
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(defun string-starts-with-p (start s &key (test #'string=))
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"Returns non nil if `s' starts with the substring `start'.
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Uses `test' to match strings (default #'string=)"
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(when (>= (length s)
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(length start))
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(funcall test s start :start1 0 :end1 (length start))))
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(defun string-ends-with-p (end s &key (test #'string=))
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"Returns t if s ends with the substring 'end', nil otherwise.
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Uses `test' to match strings (default #'string=)"
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(when (>= (length s)
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(length end))
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(funcall test s end :start1 (- (length s) (length end)))))
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(defvar *blanks* '(#\Space #\Newline #\Backspace #\Tab
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#\Linefeed #\Page #\Return #\Rubout))
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(defun trim-blanks (s)
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(string-trim *blanks* s))
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(defun justify-monospaced-text (text &optional (chars-per-line 30))
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(if (null (split-words text))
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(list " ")
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(let ((text (split-words text))
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(chars-per-line (round chars-per-line)))
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(labels ((spaces-pos-per-line (line) (floor (/ (length line) 2)))
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(wline<= (l) (<= l chars-per-line))
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(line-length (line)
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(reduce #'+ (mapcar #'length line) :initial-value 0))
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(line-fit-p (line word)
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(wline<= (+ (line-length line) (length word))))
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(add-until-fit (text &optional (res '()))
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(if (not (line-fit-p res (first text)))
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(subseq res 0 (1- (length res)))
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(add-until-fit (rest text) (append res (list (first text) " ")))))
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(get-spacepos (line how-much)
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(do ((pos '()))
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((>= (length pos) how-much) pos)
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(let ((ranpos (random (length line))))
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(when (and (oddp ranpos)
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(not (find ranpos pos :test #'=)))
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(push ranpos pos)))))
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(increment-each-space (line)
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(loop for i in line collect (if (cl-ppcre:scan "\\p{White_Space}+" i)
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(concatenate 'string i (string " "))
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i)))
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(justify-line (line &optional
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(spaces-left (- chars-per-line (line-length line))))
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(cond
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((= (spaces-pos-per-line line) 0)
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(copy-list line))
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((= spaces-left 0)
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(copy-list line))
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((= spaces-left (spaces-pos-per-line line))
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(increment-each-space line))
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((< spaces-left (spaces-pos-per-line line))
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(loop for i in (get-spacepos line spaces-left) do
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(setf (nth i line) (concatenate 'string (nth i line) (string " "))))
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(copy-list line))
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((> spaces-left (spaces-pos-per-line line))
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(justify-line
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(increment-each-space line)
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(- spaces-left (spaces-pos-per-line line)))))))
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(mapcar #'(lambda (l) (reduce #'(lambda (a b) (concatenate 'string a b)) l))
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(do ((results '()))
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((null text) (reverse results))
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(progn
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(let* ((line (add-until-fit text))
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(rest-text (if (> (1+ (floor (/ (length line) 2)))
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(length text))
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nil
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(subseq text (1+ (floor (/ (length line) 2)))))))
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(setf text rest-text)
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(push (justify-line line) results)))))))))
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(defun flush-left-mono-text (text-words box-width &optional (lines '()))
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"Given a list of words (see: split-words) return a list of text
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lines that fits in 'box-width'"
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(flet ((join (words)
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(if words
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(join-with-strings words " ")
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"")))
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(if (null text-words)
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(reverse lines)
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(multiple-value-bind (line rest-of-words)
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(do ((words text-words (rest words))
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(line '() (misc:lcat line (list (first words))))
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(line+1 '() (if (> (length words) 1)
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(misc:lcat line (subseq words 0 2))
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line)))
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((or (null words)
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(> (length (join line+1)) box-width))
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(values (join line) words)))
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(flush-left-mono-text rest-of-words box-width (misc:lcat (list line) lines))))))
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(defun box-fit-as-much-lines (lines box-height)
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"Fit as much as possible lines in box.
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Example:
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Input: '(line1 line2 line3 line4 line5 line6 line7 line8 line9)
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+---------------+ -
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|line1 | |
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|line2 | | box-height
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|line3 | |
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|line4 | |
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|line5 | |
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+---------------+ -
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If there are more lines than the number that can be fitted the other
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lines are discarded.
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Return two values: a column
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'(line1 line2 line3 line4 line5)
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and the index of the first line was not possible to fit or nil if the
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lines fitted in the box (6 in this case).
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"
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(let ((split-at (min (length lines) box-height)))
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(values (subseq lines 0 split-at)
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split-at)))
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(defun find-max-line-length (lines)
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(reduce #'max (mapcar #'length lines)))
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(defun box-fit-single-column (lines box-height box-width)
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"Fit as lines in box.
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Example:
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Input: '(line1 line2 line3 line4 line5 line6 line7 line8 line9)
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+---------------+ - +---------------+ -
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|line1 | | |line6 | |
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|line2 | | box-height |line7 | | box-height
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|line3 | | |line8 | |
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|line4 | | |line9 | |
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|line5 | | | | |
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+---------------+ - +---------------+ -
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A B
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Return the columns; each of them can be fitted in the box (see figure
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A and B).
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Each line is padded with spaces to reach longest string in lines.
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If the padded lines will not fit in the box width they will be
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truncated.
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"
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(labels ((fit (lines box-height)
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(multiple-value-bind (column rest-index)
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(box-fit-as-much-lines lines box-height)
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(if (< rest-index (length lines))
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(append (list column)
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(fit (subseq lines rest-index)
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box-height))
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(list column)))))
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(let* ((max-width (find-max-line-length lines))
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(columns (fit lines box-height))
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(fitted (loop for lines in columns collect
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(let ((padded (mapcar (lambda (a) (right-padding a max-width))
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lines)))
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(if (> (length (first padded))
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box-width)
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(loop for line in lines collect
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(subseq line 0 box-width))
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padded)))))
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fitted)))
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(defun box-fit-as-much-lines-columns (lines box-width box-height
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&key
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(spaces-between 1)
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(pad-right-fn (lambda (a max-width)
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(right-padding a max-width)))
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(pad-left-fn
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(lambda (a) (strcat (build-string spaces-between)
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a)))
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(column-width-fn (lambda (column)
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(length (first column))))
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(build-pad-line-fn (lambda (column-width)
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(build-string column-width)))
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(truncate-restart-fn
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(lambda (batch)
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(mapcar (lambda (a)
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(subseq a
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0
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(- box-width spaces-between)))
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batch)))
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(find-max-line-length-fn #'find-max-line-length))
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"Fit as much as possible lines in box using, if necessary multiple columns.
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Example:
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Input: '(line1 line2 line3 line4 line5 line6 line7 line8 line9)
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spaces-between
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|---|
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+---------------+ -
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|line1 line6| |
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|line2 line7| | box-height
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|line3 line8| |
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|line4 line9| |
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|line5 | |
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+---------------+ -
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|-----------|
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box-width
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If there are more lines than the number that can be fitted the other
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lines are discarded.
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Return two values: a batch of columns
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(list '(line1 line2 line3 line4 line5)
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'(line6 line7 line8 line9 ' '))
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and the index of the first line was not possible to fit or nil if the
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lines fitted in the box (nil in this case).
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"
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(let ((columns ())
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(rest-lines-index 0)
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(lines-length (length lines)))
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(labels ((pad-height (column)
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(let ((column-width (funcall column-width-fn column)))
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(if (< (length column)
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box-height)
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(let ((pad-line (funcall build-pad-line-fn column-width)))
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(append column
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(make-list (- box-height
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(length column))
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:initial-element pad-line)))
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column)))
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(pad (batch add-space-left)
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(let* ((max-width (funcall find-max-line-length-fn batch))
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(padded (mapcar (lambda (a) (funcall pad-right-fn a max-width))
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batch))
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(column (if add-space-left
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(mapcar pad-left-fn padded)
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padded)))
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(if (> (+ max-width spaces-between)
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box-width)
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(restart-case
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(error 'conditions:out-of-bounds
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:text
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(format nil
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(_ "Can not fit column of width of ~a in a box of width ~a")
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(+ max-width spaces-between)
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box-width))
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(use-value (value)
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(pad value add-space-left))
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(truncate ()
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(pad (funcall truncate-restart-fn batch)
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add-space-left)))
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(let ((column-width (funcall column-width-fn column)))
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(values (pad-height column) column-width)))))
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(fit (line-index-from line-index-to &optional (width-so-far 0))
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(if (>= line-index-from lines-length) ; perfectly fitted
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(setf rest-lines-index nil)
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(let* ((column-height (min line-index-to lines-length))
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(batch (subseq lines
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line-index-from
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column-height)))
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(multiple-value-bind (column column-width)
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(pad batch (/= line-index-from 0))
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(when (<= (+ width-so-far column-width)
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box-width)
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(incf rest-lines-index (length column))
|
|
(push column columns)
|
|
(fit column-height
|
|
(+ column-height
|
|
box-height)
|
|
(+ width-so-far
|
|
column-width))))))))
|
|
(fit 0 box-height)
|
|
(values (reverse columns)
|
|
(and rest-lines-index
|
|
(<= rest-lines-index
|
|
lines-length)
|
|
rest-lines-index)))))
|
|
|
|
(defun box-fit-multiple-column (lines box-width box-height &key (spaces-between 1))
|
|
"Given 'lines' as list of strings this procedure will fits them in a
|
|
box of width and height passed as parameters ('box-width' and 'box-height').
|
|
|
|
Example:
|
|
|
|
Input: '(line1 line2 line3 line4 line5 line6 line7 line8 line9 line10 line11 line12)
|
|
|
|
spaces-between spaces-between
|
|
|---| |---|
|
|
+----------------+ - +----------------+ -
|
|
|line1 line6 | | |line11 | |
|
|
|line2 line7 | | box-height |line12 | | box-height
|
|
|line3 line8 | | | | |
|
|
|line4 line9 | | | | |
|
|
|line5 line10| | | | |
|
|
+----------------+ - +----------------+ -
|
|
|
|
|-----------| |-----------|
|
|
box-width box-width
|
|
|
|
Returns a list of fitted columns each element of this list can be
|
|
printed in the box column by column; in the example above the results are:
|
|
|
|
(((\"line1\" \"line2\" \"line3\" \"line4\" \"line5\")
|
|
(\" line6 \" \" line7 \" \" line8 \" \" line9 \" \" line10\"))
|
|
((\"line11\" \"line12\" \" \" \" \" \" \")))
|
|
|
|
"
|
|
(labels ((fit ()
|
|
(multiple-value-bind (columns rest-index)
|
|
(box-fit-as-much-lines-columns lines box-width
|
|
box-height
|
|
:spaces-between spaces-between)
|
|
(if rest-index
|
|
(append (list columns)
|
|
(box-fit-multiple-column (subseq lines rest-index)
|
|
box-width
|
|
box-height))
|
|
(list columns)))))
|
|
(fit)))
|
|
|
|
(defun annotated-text-symbol (a)
|
|
(car a))
|
|
|
|
(defun annotated-text-value (a)
|
|
(cdr a))
|
|
|
|
(defun annotated-value-max-line-length (a)
|
|
(find-max-line-length (mapcar #'annotated-text-value a)))
|
|
|
|
(defun cat-annotated-values (line)
|
|
(strcat* (mapcar #'annotated-text-value line)))
|
|
|
|
(defun pad-annotated-batch-clsr (box-width spaces-between)
|
|
"return (lambda (batch) ...)
|
|
where batch is:
|
|
'(((:a . string) (:a . string)) ; line1
|
|
((:a . string) (:a . string) ; line2
|
|
...
|
|
Note: this function needs to be improved.
|
|
"
|
|
(let ((width (- box-width spaces-between)))
|
|
(lambda (batch)
|
|
(labels ((length-fitted (line)
|
|
(length (cat-annotated-values line)))
|
|
(cut-last (line)
|
|
(let ((shrinked (coerce (misc:safe-all-but-last-elt (cdr (alexandria:last-elt line)))
|
|
'string)))
|
|
(setf (cdr (alexandria:last-elt line))
|
|
shrinked)
|
|
(remove-if (lambda (a)
|
|
(let((string (cdr a)))
|
|
(string-empty-p string)))
|
|
line)))
|
|
(fit-line (line)
|
|
(cond
|
|
((null line)
|
|
(restart-case
|
|
(error (_ "Unrecoverable error: ~a can not be fitted in a box of width ~a")
|
|
batch width)
|
|
(use-value (value) value)))
|
|
((<= (length-fitted line)
|
|
width)
|
|
line)
|
|
(t
|
|
(fit-line (cut-last line))))))
|
|
(loop for line in batch collect
|
|
(fit-line line))))))
|
|
|
|
(defun box-fit-multiple-column-annotated (lines box-width box-height &key (spaces-between 1))
|
|
"Same as box-fit-multiple-column but each element of 'lines' is a
|
|
list of cons cell:
|
|
|
|
'(((:a . string) (:a . string)) ; line1
|
|
((:a . string) (:a . string)) ; line2
|
|
...
|
|
"
|
|
(labels ((pad-right (line max-width)
|
|
(let* ((raw-string (cat-annotated-values line))
|
|
(diff (- max-width
|
|
(length raw-string)))
|
|
(last-string (cdr (alexandria:last-elt line))))
|
|
(when (> diff 0)
|
|
(setf (cdr (alexandria:last-elt line))
|
|
(strcat last-string
|
|
(build-string diff))))
|
|
line))
|
|
(pad-left (line)
|
|
(let ((first-string (cdr (first line))))
|
|
(setf (cdr (first line))
|
|
(strcat (build-string spaces-between)
|
|
first-string))
|
|
line))
|
|
(find-max-line-length (lines)
|
|
(let ((all-strings (mapcar #'cat-annotated-values
|
|
lines)))
|
|
(reduce #'max
|
|
(mapcar #'length all-strings))))
|
|
(build-pad-line (column-width)
|
|
(list (cons :padding
|
|
(build-string column-width))))
|
|
(column-width (column)
|
|
(length (cat-annotated-values (first column))))
|
|
(fit ()
|
|
(multiple-value-bind (columns rest-index)
|
|
(box-fit-as-much-lines-columns lines box-width
|
|
box-height
|
|
:pad-right-fn #'pad-right
|
|
:pad-left-fn #'pad-left
|
|
:find-max-line-length-fn #'find-max-line-length
|
|
:build-pad-line-fn #'build-pad-line
|
|
:column-width-fn #'column-width
|
|
:truncate-restart-fn
|
|
(pad-annotated-batch-clsr box-width spaces-between)
|
|
:spaces-between spaces-between)
|
|
(if rest-index
|
|
(append (list columns)
|
|
(box-fit-multiple-column-annotated (subseq lines rest-index)
|
|
box-width
|
|
box-height))
|
|
(list columns)))))
|
|
(fit)))
|
|
|
|
(defun collect-links (text &optional (schemes '("http" "https" "ftp" "gemini")))
|
|
"Collect all hyperlinks in a text marked from a list of valid `schemes'"
|
|
(flet ((build-re-scheme ()
|
|
(let ((res ""))
|
|
(loop for (scheme . rest) on schemes do
|
|
(if rest
|
|
(setf res (strcat res "(" scheme ")|"))
|
|
(setf res (strcat res "(" scheme ")://"))))
|
|
(strcat "(" res ")"))))
|
|
(let* ((results ())
|
|
(re (strcat (build-re-scheme) "\\P{White_Space}+"))
|
|
(words (split-words text))
|
|
(scanner (cl-ppcre:create-scanner re)))
|
|
(loop for word in words when (cl-ppcre:scan scanner word) do
|
|
(pushnew (cl-ppcre:scan-to-strings scanner word)
|
|
results
|
|
:test #'string=))
|
|
results)))
|
|
|
|
(defun percent-encode (string)
|
|
(percent-encoding:encode string :encoding :utf-8))
|