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;;; Shell helper functions
(defvar org-fc-awk--find-name
"[a-Z0-9_]*.org"
"-name argument passed to `find' when searching for org files")
(defun org-fc-awk--find (paths)
"Generate shell code to search PATHS for org files."
(format
"find %s -name \"%s\""
(mapconcat 'identity paths " ")
org-fc-awk--find-name))
(defun org-fc-awk--indexer-variables ()
"Variables to pass to indexer scripts"
`(("fc_tag" . ,org-fc-flashcard-tag)
("suspended_tag" . ,org-fc-suspended-tag)
("type_property" . ,org-fc-type-property)
("created_property" . ,org-fc-created-property)
("review_data_drawer" . ,org-fc-review-data-drawer)))
(cl-defun org-fc-awk--command (file &optional &key variables utils input)
"Generate the shell command for calling awk on FILE with (key
. value) pairs VARIABLES. If UTILS is set to a non-nil value,
the shared util file is included, too. If INPUT is set to a
string, use that file (absolute path) as input."
(concat "awk "
;; TODO: quote strings
(mapconcat
(lambda (kv) (format "-v %s=%s" (car kv) (cdr kv)))
variables
" ")
" "
(if utils
(concat "-f "
(expand-file-name "awk/utils.awk" org-fc-source-path) " "))
(concat "-f " (expand-file-name file org-fc-source-path))
" " input))
(defun org-fc-awk--pipe (&rest commands)
"Combine COMMANDS with shell pipes."
(mapconcat 'identity commands " | "))
(defun org-fc-awk--xargs (command)
"Generate the shell command for calling COMMAND with xargs."
(concat "xargs -n 2500 -P 4 " command))
;;; Parsing Results
;;;; Key-Value
(defun org-fc-awk--key-value-parse (input)
"Parse a string of newline separated key-value entries,
each separated by a tab, into a keyword-number plist."
(mapcan
(lambda (kv)
(let ((kv (split-string kv "\t")))
(list
(intern (concat ":" (car kv)))
(string-to-number (cadr kv)))))
(split-string input "\n" t)))
;;;; TSV
(defun org-fc-tsv--parse-date (date)
"Parse an ISO8601 date to an Emacs time."
(parse-iso8601-time-string (concat date ":00")))
(defun org-fc-tsv--parse-element (header element)
"Parse an ELEMENT of a row given a single HEADER element."
(if (listp header)
(pcase (cdr header)
('string element)
('date (org-fc-tsv--parse-date element))
('number (string-to-number element))
('symbol (intern element))
('keyword (intern (concat ":" element)))
('bool (string= element "1")))
element))
(defun org-fc-tsv--parse-row (headers elements)
"Convert two lists of HEADERS and ELEMENTS into a plist,
parsing each element with its header specification."
(if (null headers)
'()
(let ((header (first headers)))
(assert (not (null elements)))
`(,(if (listp header) (car header) header)
,(org-fc-tsv--parse-element header (first elements))
.
,(org-fc-tsv--parse-row (rest headers) (rest elements))))))
(defun org-fc-tsv-parse (headers input)
"Parse a tsv INPUT into a plist, give a list of HEADERS."
(let* ((lines (split-string input "\n" t)))
(--map (org-fc-tsv--parse-row
headers
(split-string it "\t")) lines)))
;;;; TSV Headers
(defvar org-fc-awk-card-headers
'(:path :id (:type . symbol) (:suspended . bool) (:created . date))
"Headers of the card indexer")
(defvar org-fc-awk-position-headers
'(:path
:id
(:type . symbol)
(:suspended . bool)
:position
(:ease . number)
(:box . box)
(:interval . interval)
(:due . date))
"Headers of the position indexer")
(defvar org-fc-awk-review-stats-headers
'((:reviews . number) (:again . number) (:hard . number) (:good . number) (:easy . number))
"Headers of the review stat aggregator")
;;; AWK wrapper functions
(cl-defun org-fc-awk-cards (&optional (paths org-fc-directories))
"List all cards in PATHS."
(org-fc-tsv-parse
org-fc-awk-card-headers
(shell-command-to-string
(org-fc-awk--pipe
(org-fc-awk--find paths)
(org-fl-awk--xargs
(org-fc-awk--command
"awk/index_cards.awk"
:utils t
:variables (org-fc-awk--indexer-variables)))))))
(cl-defun org-fc-awk-stats-cards (&optional (paths org-fc-directories))
"Statistics for all cards in PATHS."
(org-fc-awk--key-value-parse
(shell-command-to-string
(org-fc-awk--pipe
(org-fc-awk--find paths)
(org-fc-awk--xargs
(org-fc-awk--command
"awk/index_cards.awk"
:utils t
:variables (org-fc-awk--indexer-variables)))
(org-fc-awk--command "awk/stats_cards.awk" :utils t)))))
;; TODO: Optimize card order for review
(defun org-fc-awk-due-positions-for-paths (paths)
"Generate a list of due positions cards in randomized order."
(org-fc-tsv-parse
org-fc-awk-position-headers
(shell-command-to-string
(org-fc-awk--pipe
(org-fc-awk--find paths)
(org-fc-awk--xargs
(org-fc-awk--command
"awk/index_positions.awk"
:utils t
:variables (org-fc-awk--indexer-variables)))
(org-fc-awk--command "awk/filter_due.awk")
"shuf"))))
(cl-defun org-fc-awk-stats-positions (&optional (paths org-fc-directories))
"Statistics for all positions in PATHS."
(org-fc-awk--key-value-parse
(shell-command-to-string
(org-fc-awk--pipe
(org-fc-awk--find paths)
(org-fc-awk--xargs
(org-fc-awk--command
"awk/index_positions.awk"
:utils t
:variables (org-fc-awk--indexer-variables)))
(org-fc-awk--command "awk/stats_positions.awk")))))
(defun org-fc-awk-stats-reviews ()
"Statistics for all card reviews."
(let ((res (org-fc-tsv-parse
org-fc-awk-review-stats-headers
(shell-command-to-string
(org-fc-awk--command
"awk/stats_reviews.awk"
:utils t
:input org-fc-review-history-file)))))
`(:all ,(first res) :month ,(second res) :week ,(third res) :day ,(fourth res))))
;;; Exports
(provide 'org-fc-awk)
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