688 lines
25 KiB
Common Lisp
688 lines
25 KiB
Common Lisp
(defpackage clash
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(:documentation "Command line interface to the XDG trashcan.")
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(:import-from #:cl-xdg-trash/trashinfo
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#:trashinfo-original-path
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#:trashinfo-trash-directory
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#:trashinfo-info-file
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#:trashinfo-name
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#:trashinfo-trashed-file
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#:trashinfo-deletion-date)
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(:import-from #:cl-xdg-trash/mountpoints
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#:file-or-dir-namestring
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#:ensure-nonwild-pathname)
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(:import-from #:cl-xdg-trash/directorysizes
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#:trashed-file-size)
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(:use #:cl)
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(:export #:toplevel))
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(in-package :clash)
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;; remove extra newline at the end of the usage message
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(defmethod clingon:print-usage :around (command stream &key)
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(let ((msg (with-output-to-string (str-stream)
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(call-next-method command str-stream))))
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(format stream "~A" (subseq msg 0 (1- (length msg))))))
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;; Datetime stuff
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(define-condition date-parse-error (error)
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((source :accessor date-parse-error-source
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:type string
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:initarg :source
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:documentation "The string that failed to parse.")
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(pos :accessor date-parse-error-position
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:type (or null integer)
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:initarg :position
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:initform nil
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:documentation "The position of the error, or nil.")
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(message :accessor date-parse-error-message
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:type string
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:initarg :message
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:documentation "A message describing the error."))
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(:report (lambda (condition stream)
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(with-slots (source pos message) condition
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(format
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stream "Failed to parse date ~S~@[ at position ~A~]: ~A"
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source pos message))))
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(:documentation "A condition representing a failure in parsing a date range."))
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(defparameter *month-conversion-table*
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'((1 "january" "jan")
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(2 "february" "feb")
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(3 "march" "mar")
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(4 "april" "apr")
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(5 "may")
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(6 "june" "jun")
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(7 "july" "jly" "jul")
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(8 "august" "aug")
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(9 "september" "sep")
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(10 "october" "oct")
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(11 "november" "nov")
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(12 "december" "dec")))
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(defun parse-month-string (str)
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(loop for (num . text) in *month-conversion-table*
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when (member str text :test 'equalp)
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do (return num)))
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(defun add-time-registers (source stamp registers)
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(destructuring-bind (hour minute second am-pm) (last registers 4)
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(local-time:adjust-timestamp stamp
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(offset :sec (parse-integer (or second "0")))
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(offset :minute (parse-integer (or minute "0")))
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(offset :hour
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(if (not hour)
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0
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(cond
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((or (not am-pm) (equalp am-pm "am")) (parse-integer hour))
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((equalp am-pm "pm") (+ (parse-integer hour) 12))
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(t (error 'date-parse-error
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:source source
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:message
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(format nil "excpected \"AM\"/\"PM\", got: ~A"
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am-pm)))))))))
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(defun current-year ()
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"Return the current year."
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(local-time:timestamp-year (local-time:now)))
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(defun local-today ()
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"Return a timestamp representing the midnight today in local-time."
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(local-time:adjust-timestamp! (local-time:now)
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(set :hour 0)
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(set :minute 0)
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(set :sec 0)
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(set :nsec 0)))
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(defparameter *date-parse-formats*
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(let ((time-regexp
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(format nil "(?:\\s|$)(?:\\s*([0-9]{1,2}):([0-9]{1,2})~
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(?::([0-9]{1,2}))?(?:\\s*(AM|PM))?)?"))
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out)
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(flet ((def (regexp func)
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(push (cons (cl-ppcre:create-scanner
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(format nil "~A~A" regexp time-regexp)
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:extended-mode t :case-insensitive-mode t
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:multi-line-mode t)
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func)
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out))
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(def-no-time (regexp func)
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(push (cons (cl-ppcre:create-scanner regexp
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:extended-mode t :case-insensitive-mode t
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:multi-line-mode t)
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func)
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out)))
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(def-no-time "^$"
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(lambda (source registers)
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(declare (ignore source registers))
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(local-time:now)))
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(def-no-time "[0-9]+"
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(lambda (source registers)
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(declare (ignore registers))
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(local-time:unix-to-timestamp (parse-integer source))))
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(def-no-time "now"
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(lambda (source registers)
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(declare (ignore source registers))
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(local-time:now)))
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(def "today"
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(lambda (source registers)
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(add-time-registers source
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(local-today)
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registers)))
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(def "yesterday"
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(lambda (source registers)
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(add-time-registers source
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(local-time:adjust-timestamp! (local-today)
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(offset :day -1))
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registers)))
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;; 2025/10/23 3:00 pm
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(def "([0-9]+)(?:\\s+|/)([0-9]{1,2})(?:\\s+|/)([0-9]{1,2})"
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(lambda (source registers)
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(destructuring-bind (year month day &rest ignore) registers
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(declare (ignore ignore))
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(add-time-registers source
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(local-time:encode-timestamp
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0 0 0 0
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(parse-integer day)
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(parse-integer month)
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(parse-integer year))
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registers))))
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;; Oct 10/23 3:00 PM
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(def "([A-Za-z]+)(?:\\s+|/)([0-9]{1,2})(?:(?:\\s+|/)([0-9]+))?"
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(lambda (source registers)
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(destructuring-bind (month-str day year &rest ignore)
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registers
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(declare (ignore ignore))
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(let ((month (parse-month-string month-str)))
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(unless month
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(error 'date-parse-error
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:source source
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:message (format nil "unknown month: ~S" month-str)))
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(add-time-registers source
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(local-time:encode-timestamp
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0 0 0 0
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(parse-integer day)
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month
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(if year
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(parse-integer year)
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(current-year)))
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registers))))))))
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(defun parse-date-time (string)
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"Parse date and time from STRING."
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(dolist (entry *date-parse-formats*)
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(destructuring-bind (scanner . func) entry
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(multiple-value-bind (start end reg-starts reg-ends)
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(cl-ppcre:scan scanner string)
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(when (and (eql start 0)
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(eql end (length string)))
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(return-from parse-date-time
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(funcall func
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string
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(loop for s across reg-starts
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for e across reg-ends
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when (and s e)
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collect (subseq string s e)
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else
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collect nil))))))))
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(defun parse-date-range (string)
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"Parse a date range from STRING."
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(let ((sep (search ".." string)))
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(when (not sep)
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(error 'date-parse-error
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:source string
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:message "expected \"..\" to separate start and end date"))
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(let ((second-sep (search ".." string :start2 (1+ sep))))
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(when second-sep
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(error 'date-parse-error :source string
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:position second-sep
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:message "multiple \"..\" found")))
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(macrolet ((trim (str)
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`(string-trim '(#\Tab #\Space #\Newline) ,str)))
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(cons (parse-date-time (trim (subseq string 0 sep)))
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(parse-date-time (trim (subseq string (+ sep 2))))))))
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(defun timestamp-in-ranges (stamp ranges)
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"Return non-nil if STAMP is in one of RANGES."
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(some (lambda (range)
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(destructuring-bind (start . end) range
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(when (local-time:timestamp> start end)
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(rotatef start end))
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(and (local-time:timestamp>= stamp start)
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(local-time:timestamp<= stamp end))))
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ranges))
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(defclass option-date-range (clingon:option)
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((ranges :accessor option-date-range-ranges
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:initarg ranges
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:initform nil
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:type list
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:documentation "List of conses of local-time:timestamps representing
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date ranges.."))
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(:default-initargs :parameter "RANGE"))
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(defmethod clingon:derive-option-value ((option option-date-range) arg &key)
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(push (parse-date-range arg) (option-date-range-ranges option))
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(option-date-range-ranges option))
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(defmethod clingon:make-option ((kind (eql :date-range)) &rest args)
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(apply #'make-instance 'option-date-range args))
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;; Filtering
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(defun clingon-filtering-options ()
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"Return some options that can be used by many commands for filtering."
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(list
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(clingon:make-option
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:flag
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:key :print-format-info
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:description "print information about format strings, then exit"
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:long-name "format-info")
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(clingon:make-option
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:flag
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:key :strings
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:description "don't use regexp to match file names"
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:short-name #\s
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:long-name "strings")
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(clingon:make-option
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:flag
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:key :exact
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:description "force exact match"
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:short-name #\e
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:long-name "exact")
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(clingon:make-option
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:flag
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:key :full-path
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:description "match against full file paths"
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:short-name #\p
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:long-name "full-paths")
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(clingon:make-option
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:flag
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:key :case-insensitive
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:description "match case-insensitively"
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:short-name #\i
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:long-name "case-insensitive")
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(clingon:make-option
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:flag
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:key :invert
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:description "invert result"
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:short-name #\v
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:long-name "invert")
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(clingon:make-option
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:string
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:key :format
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:description "format to print results in"
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:short-name #\f
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:long-name "format")
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(clingon:make-option
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:date-range
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:key :date-ranges
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:description "range of dates to consider in search"
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:short-name #\R
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:long-name "date-range")))
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(declaim (inline compare-trashinfo-to-string))
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(defun compare-trashinfo-to-string (trashinfo filter full-path exact
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case-insensitive)
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"Compare TRASHINFO's name or path to FILTER using the provided matching
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options."
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(let* ((orig-path (trashinfo-original-path trashinfo))
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(target (if full-path orig-path (file-or-dir-namestring orig-path))))
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(cond
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((and exact case-insensitive) (equalp target filter))
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(exact (equal target filter))
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(t (search filter target :test (if case-insensitive #'equalp #'eql))))))
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(declaim (inline compare-trashinfo-to-scanner))
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(defun compare-trashinfo-to-scanner (trashinfo filter full-path exact)
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"Compare TRASHINFO's name or path to FILTER, which is a cl-ppcre scanner."
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(let* ((orig-path (trashinfo-original-path trashinfo))
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(target (if full-path orig-path (file-or-dir-namestring orig-path))))
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(multiple-value-bind (start end) (cl-ppcre:scan filter target)
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(and start
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(or (not exact)
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(and (= start 0) (= end (length target))))))))
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(defun filter-trashinfos-by (trashinfos filter &key regexp full-path
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exact case-insensitive
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invert)
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"Filter the list of trashinfo objects TRASHINFOS by FILTER, which is a
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string."
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(if regexp
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(let ((scanner (cl-ppcre:create-scanner
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filter :case-insensitive-mode case-insensitive)))
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(remove-if
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(lambda (info)
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(let ((res (compare-trashinfo-to-scanner info scanner
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full-path exact)))
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(or (and (not invert) (not res))
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(and invert res))))
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trashinfos))
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(remove-if
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(lambda (info)
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(let ((res (compare-trashinfo-to-string
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info filter full-path exact case-insensitive)))
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(or (and (not invert) (not res))
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(and invert res))))
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trashinfos)))
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(defun list-nonexcluded-trash-dirs (cmd)
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"Return a list of all trash directories, except those excluded by CMD."
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(append (set-difference (cl-xdg-trash:list-trash-directories)
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(clingon:getopt cmd :ignored-trashes)
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:test #'uiop:pathname-equal)
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(mapcar #'ensure-nonwild-pathname
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(clingon:getopt cmd :extra-trashes))))
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(defun limit-trashinfo-dates-for-cmd (cmd trashinfos)
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(let ((ranges (clingon:getopt cmd :date-ranges)))
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(if (not ranges)
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trashinfos
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(delete-if (lambda (info)
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(not (timestamp-in-ranges (trashinfo-deletion-date info)
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ranges)))
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trashinfos))))
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(defun list-trashinfos-for-cmd (cmd)
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"List trashinfos for the command CMD."
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(let ((args (clingon:command-arguments cmd)))
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(when (cdr args)
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(clingon:print-usage-and-exit cmd t))
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(limit-trashinfo-dates-for-cmd
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cmd
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(if (not (car args))
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(cl-xdg-trash:list-trashed-files (list-nonexcluded-trash-dirs cmd))
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(let ((filter (car args))
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(strings (clingon:getopt cmd :strings))
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(exact (clingon:getopt cmd :exact))
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(full-path (clingon:getopt cmd :full-path))
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(case-insensitive (clingon:getopt cmd :case-insensitive))
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(invert (clingon:getopt cmd :invert)))
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(filter-trashinfos-by
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(cl-xdg-trash:list-trashed-files
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(list-nonexcluded-trash-dirs cmd))
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filter
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:regexp (not strings)
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:exact exact
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:full-path full-path
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:case-insensitive case-insensitive
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:invert invert))))))
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;; Formatting
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(defparameter *trashinfo-formatters*
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`((#\# :index
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"the index of the current file (used when prompting for files)")
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(#\o ,(lambda (stream info)
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(format stream "~A" (trashinfo-original-path info)))
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"the (o)riginal path")
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(#\n ,(lambda (stream info)
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(format stream "~A" (file-or-dir-namestring
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(trashinfo-original-path info))))
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"the original (n)ame")
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(#\d ,(lambda (stream info)
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(format stream "~A" (trashinfo-trash-directory info)))
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"the trash (d)irectory")
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(#\i ,(lambda (stream info)
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(format stream "~A" (trashinfo-info-file info)))
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"the trash(i)nfo file path")
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(#\c ,(lambda (stream info)
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(format stream "~A" (trashinfo-trashed-file info)))
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"the (c)urrent (trashed) path")
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(#\u ,(lambda (stream info)
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(format stream "~A" (local-time:timestamp-to-unix
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(trashinfo-deletion-date info))))
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"the time the file was trashed (in (u)TC seconds)")
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(#\t ,(lambda (stream info)
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(local-time:format-timestring
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stream (trashinfo-deletion-date info)
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:format local-time:+asctime-format+))
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"the (t)ime the file was trashed (pretty-printed local time)")
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(#\t ,(lambda (stream info)
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(format stream "~A" (trashed-file-size
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(trashinfo-trash-directory info)
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(trashinfo-name info))))
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"the file's (s)size")
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(#\% ,(lambda (stream info)
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(declare (ignore info))
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(format stream "%"))
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"a liternal %")))
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(defun process-format-string (format-string)
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"Process FORMAT-STRING into a list of string and functions."
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(let ((start 0)
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out end)
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(labels ((ensure-next-char (i thing)
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(unless (< i (1- (length format-string)))
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(error "Unterminated ~A at char ~A: ~S" thing i format-string)))
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(unknown (i thing)
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(error "Unknown ~A at char ~A: ~S" thing i format-string))
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(push-thing (thing)
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(if (null out)
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(setq out (list thing)
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end out)
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(setf (cdr end) (list thing)
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end (cdr end))))
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(push-string (str)
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(unless (zerop (length str))
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(if (stringp (car end))
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(setf (car end) (format nil "~A~A" (car end) str))
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(push-thing str)))))
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(do ((i 0 (1+ i)))
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((>= i (length format-string)))
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(case (aref format-string i)
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(#\%
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(ensure-next-char i "substitution")
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(push-string (subseq format-string start i))
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(let ((fun (second (assoc (aref format-string (1+ i))
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*trashinfo-formatters*))))
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(unless fun
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(unknown i "substitution"))
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(push-thing fun))
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(setq start (+ i 2)
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i (1+ i)))
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(#\\
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(ensure-next-char i "escape sequence")
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(push-string (subseq format-string start i))
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(push-string
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(case (aref format-string (1+ i))
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(#\\ "\\")
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(#\n (string #\Newline))
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(#\t (string #\Tab))
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(#\0 (string #\Nul))
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(t (unknown i "escape sequence"))))
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(setq start (+ i 2)
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i (1+ i)))))
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(push-string (subseq format-string start))
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out)))
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(defun format-trashinfo (stream format-object info &key (index 1))
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"Format the trashinfo INFO to STREAM accoring to FORMAT-OBJECT (which is from
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process-format-string)."
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(dolist (part format-object)
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(cond
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((eq :index part)
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(format stream "~A" index))
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((stringp part)
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(format stream "~A" part))
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(t (funcall part stream info)))))
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(defun print-format-info (&optional (stream t))
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(format stream "~
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Format strings use C-style and printf-style escape sequences. Each character
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other than one of those with a special meaning noted below is copied to the
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output verbatim. The recognized C-style escapes sequences are:
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\"\\0\" - null byte
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\"\\n\" - newline
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\"\\t\" - tab character
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\"\\\\\" - literal backslash
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The recognizes printf-style sequences are (parenthesis denote the mnemonic):~%")
|
||
(dolist (entry *trashinfo-formatters*)
|
||
(let ((char (first entry))
|
||
(doc (third entry)))
|
||
(format stream " \"%~A\" - ~A~%" char doc))))
|
||
|
||
|
||
;; Sorting
|
||
(defun clingon-sort-options ()
|
||
"Return a list of sorting options that can be used by many commands."
|
||
(list
|
||
(clingon:make-option
|
||
:flag
|
||
:key :reverse-sort
|
||
:description "reverse sort order"
|
||
:short-name #\r
|
||
:long-name "reverse-sort")
|
||
(clingon:make-option
|
||
:enum
|
||
:key :sort-field
|
||
:description "sort field"
|
||
:short-name #\l
|
||
:long-name "sort-field"
|
||
:items '(("name" . :name)
|
||
("path" . :path)
|
||
("deletion-date" . :deletion-date))
|
||
:initial-value "deletion-date")))
|
||
|
||
(defun sort-trashinfos-for-cmd (trashinfos cmd)
|
||
"Sort the TRASHINFOS according to options passed to CMD."
|
||
(multiple-value-bind (pred-fun key-fun)
|
||
(case (clingon:getopt cmd :sort-field)
|
||
(:name (values #'string-lessp
|
||
(lambda (info) (file-or-dir-namestring
|
||
(trashinfo-original-path info)))))
|
||
(:path (values #'string-lessp #'trashinfo-original-path))
|
||
(:deletion-date (values
|
||
#'< (lambda (info) (local-time:timestamp-to-unix
|
||
(trashinfo-deletion-date info))))))
|
||
(sort trashinfos
|
||
(if (clingon:getopt cmd :reverse-sort)
|
||
(complement pred-fun)
|
||
pred-fun)
|
||
:key key-fun)))
|
||
|
||
|
||
;; List command
|
||
(defun list/handler (cmd)
|
||
"Handler for the \"list\" subcommand."
|
||
(if (clingon:getopt cmd :print-format-info)
|
||
(print-format-info t)
|
||
(let ((format (process-format-string (or (clingon:getopt cmd :format)
|
||
"%t %o\\n"))))
|
||
(loop for info in (sort-trashinfos-for-cmd
|
||
(list-trashinfos-for-cmd cmd) cmd)
|
||
for i upfrom 1
|
||
do (format-trashinfo t format info :index i)))))
|
||
|
||
(defun list/options ()
|
||
"Return options for the \"list\" subcommand."
|
||
(append
|
||
(clingon-filtering-options)
|
||
(clingon-sort-options)
|
||
(list
|
||
(clingon:make-option
|
||
:list/filepath
|
||
:key :extra-trashes
|
||
:description "include additional trashes"
|
||
:short-name #\c
|
||
:long-name "include-trash"))))
|
||
|
||
(defun list/command ()
|
||
"Return the Clingon command for the \"list\" subcommand."
|
||
(clingon:make-command
|
||
:name "list"
|
||
:description "list files in trash directories"
|
||
:usage "[options] [pattern]"
|
||
:options (list/options)
|
||
:handler #'list/handler))
|
||
|
||
|
||
;; Put command
|
||
(defun put/handler (cmd)
|
||
"Handler for the \"put\" subcommand."
|
||
(let ((no-cross-device (clingon:getopt cmd :no-cross-device))
|
||
(ignored-dirs (clingon:getopt cmd :ignored-trashes))
|
||
(trash-directory (clingon:getopt cmd :trash-directory)))
|
||
(dolist (file (clingon:command-arguments cmd))
|
||
(handler-case
|
||
(cl-xdg-trash:trash-file file :no-cross-device no-cross-device
|
||
:ignored-trash-dirs ignored-dirs
|
||
:trash-directory trash-directory)
|
||
;; in case of an error, just notify the user and continue
|
||
(error (e)
|
||
(format *error-output* "~&~A~&" e))))))
|
||
|
||
(defun put/options ()
|
||
"Return options for the \"put\" subcommand."
|
||
(list
|
||
(clingon:make-option
|
||
:filepath
|
||
:key :trash-directory
|
||
:description "force trashing to a specific directory"
|
||
:long-name "trash-directory")
|
||
(clingon:make-option
|
||
:flag
|
||
:key :no-cross-device
|
||
:description "don't trash files to directories on different devices"
|
||
:short-name #\n
|
||
:long-name "no-cross-device")))
|
||
|
||
(defun put/command ()
|
||
"Return the Clingon command for the \"put\" subcommand"
|
||
(clingon:make-command
|
||
:name "put"
|
||
:aliases '("trash")
|
||
:description "move files to the trash"
|
||
:usage "[-n|--no-cross-device] [--trash-directory=DIR] [files...]"
|
||
:options (put/options)
|
||
:handler #'put/handler))
|
||
|
||
|
||
;; Restore command
|
||
|
||
(defun restore/handler (cmd)
|
||
"Handler for the \"restore\" subcommand."
|
||
(le))
|
||
|
||
(defun restore/options ()
|
||
"Return options for the \"restore\" subcommand."
|
||
(append
|
||
(clingon-filtering-options)
|
||
(clingon-sort-options)
|
||
(list
|
||
(clingon:make-option
|
||
:flag
|
||
:key :all
|
||
:description "restore all files that match the pattern"
|
||
:short-name #\a
|
||
:long-name "all")
|
||
(clingon:make-option
|
||
:list/integer
|
||
:key :indices
|
||
:description
|
||
"restore the Nth file that matched the pattern (after sorting)"
|
||
:short-name #\n
|
||
:long-name "nth")
|
||
(clingon:make-option
|
||
:flag
|
||
:key :dont-prompt-only-one
|
||
:descrition "don't prompt if the pattern matches only one file"
|
||
:short-name #\O
|
||
:long-name "dont-prompt-only-one"))))
|
||
|
||
(defun restore/command ()
|
||
"Rethrn the Clingon command for the \"restore\" subcommand."
|
||
(clingon:make-command
|
||
:name "restore"
|
||
:descrition "move files out of the trash"
|
||
:usage "[options] [pattern]"
|
||
:options (restore/options)
|
||
:handler #'restore/handler))
|
||
|
||
|
||
;; Toplevel command
|
||
(defun toplevel/options ()
|
||
"Return the toplevel options list."
|
||
(list
|
||
(clingon:make-option
|
||
:list
|
||
:key :ignored-trashes
|
||
:description "ignore the given trash directory"
|
||
:long-name "ignore-trash"
|
||
:persistent t)))
|
||
|
||
(defun toplevel/command ()
|
||
"Return the toplevel command."
|
||
(clingon:make-command
|
||
:name "clash"
|
||
:description "command line interface to the XDG trashcan"
|
||
:version "0.1.0"
|
||
:license "GPL3"
|
||
:authors '("Alexander Rosenberg <zanderpkg@pm.me>")
|
||
:options (toplevel/options)
|
||
:sub-commands (list (list/command)
|
||
(put/command))
|
||
:handler #'(lambda (cmd)
|
||
(clingon:print-usage-and-exit cmd t))))
|
||
|
||
(defparameter *toplevel/help-option*
|
||
(clingon:make-option
|
||
:flag
|
||
:key :clingon.help.flag
|
||
:description "display usage information, then exit"
|
||
:short-name #\h
|
||
:long-name "help"
|
||
:persistent t)
|
||
"Help option to replace the default Clingon one.")
|
||
|
||
(defun toplevel (&optional (args () argsp))
|
||
"Program entry point.
|
||
Args can be supplied to facilitate testing in SLIME."
|
||
(let ((clingon:*default-options* (list clingon:*default-version-flag*
|
||
clingon:*default-bash-completions-flag*
|
||
*toplevel/help-option*)))
|
||
(if argsp
|
||
(clingon:run (toplevel/command) args)
|
||
(clingon:run (toplevel/command)))))
|