240 lines
6.2 KiB
Scheme
240 lines
6.2 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 format)
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(chicken sort)
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(chicken time)
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(chicken time posix)
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(chicken process-context)
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dictionary
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month
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period
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member-file
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command-line)
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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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;; 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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(let ()
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(display "-")
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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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(let ()
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(display "*")
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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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;; Adds the 'info key to all expanded index entries by loading
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;; appropriate 'file key file from the members directory.
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(define (load-members-from-expanded-index ei)
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(let loop ((ei ei)
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(mdb '()))
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(if (null? ei)
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mdb
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(let ((mi (car ei)))
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(let ((mid (load-member-file
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(make-pathname
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(*members-directory*)
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(dict-ref mi 'file)))))
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(loop (cdr ei)
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(cons (dict-set mi
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'info
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mid)
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mdb)))))))
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;; Loads all member information from given members database.
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(define (load-members)
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(load-members-from-expanded-index
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(expand-members-raw-index
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(load-members-raw-index))))
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;; Gets member based by generic predicate
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(define (find-member-by-predicate mdb pred)
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(let loop ((mdb mdb))
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(if (null? mdb)
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#f
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(let ((mr (car mdb)))
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(if (pred mr)
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mr
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(loop (cdr mdb)))))))
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;; Gets member record by member key
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(define (find-member-by-key mdb key val)
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(find-member-by-predicate
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mdb
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(lambda (mr)
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(equal? (dict-ref mr key) val))))
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;; Gets member record by member id (from file/symlink)
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(define (find-member-by-id mdb id)
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(find-member-by-key mdb 'id id))
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;; Gets member record by member name (from file/symlink)
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(define (find-member-by-name mdb name)
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(find-member-by-key mdb 'name name))
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;; Gets member record by member nick in member file the key 'nick
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(define (find-member-by-nick mdb nick)
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(find-member-by-predicate
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mdb
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(lambda (mr)
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(equal? (dict-ref (dict-ref mr 'info) 'nick) nick))))
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;; Returns the list of all members ids
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(define (list-members-ids mdb)
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(map (lambda (mr) (dict-ref mr 'id)) mdb))
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;; Returns the list of all file names in members database
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(define (list-members-names mdb)
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(map (lambda (mr) (dict-ref mr 'name)) mdb))
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;; Returns the list of all members nicks
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(define (list-members-nicks mdb)
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(map (lambda (mr) (dict-ref (dict-ref mr 'info) 'nick)) mdb))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Member predicates
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(define (member-suspended? mr)
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#f)
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(define (member-student? mr)
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#f)
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(define (member-destroyed? mr)
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#f)
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;; Returns true if the member is neither suspended nor destroyed
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(define (member-active? mr)
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(not (or (member-suspended? mr)
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(member-destroyed? mr))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Run everything
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(define action (make-parameter #f))
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(define member-parm (make-parameter #f))
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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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;; Handle options
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(command-line
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print-help
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(-h () "Help"
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(print-help)
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(exit 0))
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(-M (dn) "Members dir" (*members-directory* dn))
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(-mi (id) "Id"
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(action 'member-by-id)
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(member-parm (string->number id)))
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(-mn (nick) "Nick"
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(action 'member-by-nick)
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(member-parm nick))
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)
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;; Run tests
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(print "Running self-tests:")
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(dictionary-tests!)
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(month-tests!)
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(period-tests!)
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(print "All self-tests ok!")
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(newline)
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;; Load the members database
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(display "Loading members ")
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(define MDB (load-members))
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(print " ok.")
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(print "Members in database: " (length MDB))
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(newline)
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;; Perform requested action
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(case (action)
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((member-by-id member-by-nick)
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(let ((mr (if (eq? (action) 'member-by-id)
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(find-member-by-id MDB (member-parm))
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(find-member-by-nick MDB (member-parm)))))
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(if mr
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(let* ((id (dict-ref mr 'id))
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(name (dict-ref mr 'name))
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(info (dict-ref mr 'info))
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(sinfo (sort info
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(lambda (a b)
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(string<?
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(symbol->string (car a))
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(symbol->string (car b)))))))
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(print "User " id " alias " name)
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(let loop ((sinfo sinfo))
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(when (not (null? sinfo))
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(let* ((kv (car sinfo))
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(k (car kv))
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(v (cdr kv)))
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(print " " k ":\t"
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(if (member k '(student suspend))
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(periods->string v)
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v))
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(loop (cdr sinfo))))))
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(let ()
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(print "No such member " (member-parm) ".")))))
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((#f) (print "No action specified.")))
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