Add simple formatting module.

src/Makefile

@@ -47,7 +47,7 @@ HACKERBASE-OBJS=hackerbase.o testing.o listing.o month.o period.o	\
 	 member-parser.o web-static.o environment.o mailman.o		\
 	 util-set-list.o util-time.o util-tag.o util-io.o		\
 	 util-string.o util-io.o util-list.o util-parser.o texts.o	\
-	 tests.o util-proc.o util-mail.o reminders.o
+	 tests.o util-proc.o util-mail.o reminders.o util-format.o
 
 .PHONY: imports
 imports: $(HACKERBASE-DEPS)
@@ -317,7 +317,12 @@ util-mail.import.scm: $(UTIL-MAIL-SOURCES)
 
 REMINDERS-SOURCES=reminders.scm member-record.import.scm	\
 	util-mail.import.scm util-dict-list.import.scm		\
-	members-payments.import.scm
+	members-payments.import.scm util-format.scm
 
 reminders.o: reminders.import.scm
 reminders.import.scm: $(REMINDERS-SOURCES)
+
+UTIL-FORMAT-SOURCES=util-format.scm
+
+util-format.o: util-format.import.scm
+util-format.import.scm: $(UTIL-FORMAT-SOURCES)

src/reminders.scm

@@ -37,14 +37,15 @@
 	 member-record
 	 util-mail
 	 util-dict-list
-	 members-payments)
+	 members-payments
+	 util-format)
 
  ;; Creates reminder email body
  (define (reminder-email-body mr)
    (list
     (member-format "Ahoj ~N," mr)
     "podle evidence členů a bankovního účtu to vypadá, že máš nedoplatek"
-    (format "ve výši ~A Kč." (member-total-balance mr))
+    (format "ve výši ~A Kč." (format-amount (member-total-balance mr)))
     "Zkontroluj, prosím, zda tvé platby členských příspěvků"
     (member-format "s variabilním symbolem ~I byly zaslány na" mr)
     "správný účet 1234/2010"

src/util-format.scm

@@ -0,0 +1,53 @@
+;;
+;; util-format.scm
+;;
+;; Less-common formatting functions.
+;;
+;; ISC License
+;;
+;; Copyright 2023 Brmlab, z.s.
+;; Dominik Pantůček <dominik.pantucek@trustica.cz>
+;;
+;; Permission to use, copy, modify, and/or distribute this software
+;; for any purpose with or without fee is hereby granted, provided
+;; that the above copyright notice and this permission notice appear
+;; in all copies.
+;; 
+;; THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+;; WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+;; WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+;; AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+;; CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+;; OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+;; NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+;; CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+;;
+
+(declare (unit util-format))
+
+(module
+ util-format
+ (
+  format-amount
+  )
+
+ (import scheme
+	 (chicken string)
+	 (chicken format))
+
+ ;; Formats amount in currency
+ (define (format-amount amt)
+   (if amt
+       (let* ((str (number->string amt))
+	      (flds (string-split str "."))
+	      (integer? (null? (cdr flds))))
+	 (if integer?
+	     (format "~A.--" (car flds))
+	     (format "~A.~A"
+		     (car flds)
+		     (substring
+		      (string-append (cadr flds) "0")
+		      0 2))))
+       "ERR.OR"))
+
+ )