273 lines
7.8 KiB
Scheme
273 lines
7.8 KiB
Scheme
;;
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;; brmsaptool.scm
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;;
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;; ISC License
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;;
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;; Copyright 2023 Brmlab, z.s.
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;; Dominik Pantůček <dominik.pantucek@trustica.cz>
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;;
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;; Permission to use, copy, modify, and/or distribute this software
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;; for any purpose with or without fee is hereby granted, provided
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;; that the above copyright notice and this permission notice appear
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;; in all copies.
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;;
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;; THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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;; WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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;; WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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;; AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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;; CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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;; OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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;; NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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;; CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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;;
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(import (chicken condition)
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(chicken file)
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(chicken pathname)
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(chicken file posix)
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(chicken io)
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(chicken string)
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(chicken process-context))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Static default configuration
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(define *members-directory* (make-parameter "members"))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Testing
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(define-syntax with-handler
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(syntax-rules ()
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((_ handler body ...)
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(call-with-current-continuation
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(lambda (k)
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(with-exception-handler
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(lambda (x) (k (handler x)))
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(lambda () body ...)))))))
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(define-syntax unit-test
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(syntax-rules ()
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((_ name condition)
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(if (with-handler (lambda (x) #f)
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(lambda () condition))
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(display ".")
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(error 'unit-test name)))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Dictionary
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(define (make-dict)
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'())
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(define (dict-has-key? d k)
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(if (assq k d) #t #f))
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(define (dict-ref d k . r)
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(let ((p (assq k d)))
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(if p
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(cdr p)
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(if (null? r)
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(error 'dict-ref "Key does not exist" k)
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(car r)))))
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(define (dict-remove d k)
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(let loop ((s d)
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(r '())
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(e #t))
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(if (null? s)
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(if e
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(error 'dict-remove "Key does not exist" k)
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r)
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(if (eq? (caar s) k)
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(loop (cdr s) r #f)
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(loop (cdr s) (cons (car s) r) e)))))
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(define (dict-set d k v)
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(let ((dr (let loop ((s d)
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(r '()))
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(if (null? s)
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r
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(if (eq? (caar s) k)
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(loop (cdr s) r)
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(loop (cdr s) (cons (car s) r)))))))
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(cons (cons k v)
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dr)))
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(define (dict-keys d)
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(map car d))
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(define (dict-tests!)
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(display "[test] dict ")
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(unit-test 'make-dict (null? (make-dict)))
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(unit-test 'dict-ref-nonexistent (with-handler (lambda (x) #t) (dict-ref (make-dict) 'nonexistent) #f))
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(unit-test 'dict-ref-default (dict-ref (make-dict) 'nonexistent #t))
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(unit-test 'dict-set-nonexistent (equal? (dict-set (make-dict) 'nonexistent 1) '((nonexistent . 1))))
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(unit-test 'dict-set-existent (equal? (dict-set (dict-set (make-dict) 'existent 1) 'existent 2) '((existent . 2))))
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(unit-test 'dict-remove-nonexistent (with-handler (lambda (x) #t) (dict-remove (make-dict) 'nonexistent) #f))
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(unit-test 'dict-remove-existing (null? (dict-remove (dict-set (make-dict) 'existing 1) 'existing)))
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(unit-test 'dict-keys (equal? (dict-keys (dict-set (make-dict) 'existing 1)) '(existing)))
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(print " ok."))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Months support
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;; Returns true if this is a valid month representation - a list with
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;; two integer elements within the allowed range.
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(define (month-valid? m)
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(and (list? m)
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(car m)
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(cdr m)
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(cadr m)
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(nil? (cddr m))
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(integer? (car m))
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(integer? (cadr m))
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(>= (car m 1000))
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(<= (car m 9999))
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(>= (cadr m 1))
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(<= (cadr m 12))))
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(define (string->month s)
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(list 2023 1))
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;; Formats (valid) month as YYYY-MM string
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(define (month->string M)
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(if (month-valid? M)
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(let ((y (car s))
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(m (cadr s)))
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(sprintf "~A-~A~A"
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y
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(if (< m 10) " " "")
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m))
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(error 'string->month "Invalid month" M)))
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;; Returns true if both arguments are a valid month and are equal
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(define (month=? m n)
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(and (valid-month? m)
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(valid-month? n)
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(equal? m n)))
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;; Returns true if the first argument is a month in the past of the
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;; second argument month
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(define (month<? m n)
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(and (month-valid? m)
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(month-valid? n)
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(or (< (car m) (car n))
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(and (= (car m) (car n))
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(< (cadr m) (cadr n))))))
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(define (month-diff m n)
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; Exclusive
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1)
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(define (month-tests!)
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(display "[test] month ")
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(unit-test 'month-valid? (month-valid? '(2023 5)))
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(unit-test 'month-valid?-bad-year (not (month-valid? '(999 8))))
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(unit-test 'month-valid?-bad-month (not (month-valid? '(2023 -5))))
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;; Parsing
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(unit-test 'month->string (equal? (month->string '(2023 1)) "2023-01"))
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(unit-test 'month->string-bad-year (with-handler (lambda (x) #t) (month->string '(999 12)) #f))
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(unit-test 'month->string-bad-month (with-handler (lambda (x) #t) (month->string '(2023 13)) #f))
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(unit-test 'month<? (month<? '(2023 5) '(2023 6)))
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(unit-test 'month<?-cross-year (month<? '(2022 12) '(2023 1)))
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(unit-test 'month<?-equal (not (month<? '(2023 1) '(2023 1))))
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(unit-test 'month<?-greater (not (month<? '(2023 1) '(2023 2))))
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(unit-test 'month-equal? (month-equal? '(2023 4) '(2023 4)))
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(unit-test 'month-equal? (not (month-equal? '(2023 4) '(2023 5))))
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;; Difference - exclusive end
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(print " ok."))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Members database
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;; Loads all symlinks from (*members-directory*) returning a list of
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;; pairs (name . destination)
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(define (load-members-raw-index)
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(let loop ((fns (directory (*members-directory*)))
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(rs '()))
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(if (null? fns)
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rs
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(let* ((fn (car fns))
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(ffn (make-pathname (*members-directory*) fn))
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(sl (if (symbolic-link? ffn) (read-symbolic-link ffn) #f)))
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(loop (cdr fns)
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(if sl
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(cons (cons fn sl) rs)
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rs))))))
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;; Converts the raw members index to a list of dictionaries with keys
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;; 'id, 'name and 'file. File names are without directory element.
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(define (expand-members-raw-index ri)
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(let loop ((ri ri)
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(ds '()))
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(if (null? ri)
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ds
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(let* ((mp (car ri))
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(lnk (car mp))
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(dfn (cdr mp))
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(lnkn (string->number lnk))
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(dfnn (string->number dfn))
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(id (or dfnn lnkn))
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(name (if lnkn dfn lnk)))
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(loop (cdr ri)
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(cons (list (cons 'id id)
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(cons 'name name)
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(cons 'file dfn))
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ds))))))
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;; Parses given key-value line. Key is up to first space, value is the
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;; rest of the line. If the line doesn't contain anything, returns #f.
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(define (parse-member-line l)
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;;(print 'pm)
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;;(print l)
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(let ((sp (string-split l " ")))
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(and sp
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(not (null? sp))
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(list (string->symbol (car sp))
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(string-intersperse (cdr sp))))))
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;; TODO: student and suspend special handling - should create list of
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;; (start date) (stop date) which will be later sorted by date and
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;; computation performed
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(define (parse-member-lines ls)
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(let loop ((ls ls)
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(r (make-dict)))
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;;(print '---)
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;;(print r)
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(if (null? ls)
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r
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(let ((p (parse-member-line (car ls))))
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;;(print p)
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(loop (cdr ls)
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(if p
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(apply dict-set r p)
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r))))))
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;; Loads lines from given file in (*members-directory*) and parses
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;; them.
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(define (load-member-file fn)
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(let* ((ffn (make-pathname (*members-directory*) fn))
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(f (open-input-file ffn))
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(ls (read-lines f)))
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(parse-member-lines ls)))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Run everything
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;; Print banner
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(print "brmsaptool 0.1 (c) 2023 Brmlab, z.s.")
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(newline)
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;; Run tests
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(print "Running self-tests:")
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(dict-tests!)
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(month-tests!)
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(print "All self-tests ok!")
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(newline)
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;; Perform requested action
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;(print (expand-members-raw-index (load-members-raw-index)))
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(print (load-member-file "joe"))
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