From 6546132ed7b3fdc556912eab7fbc709875cb0b73 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hugo=20H=C3=B6rnquist?= <hugo@lysator.liu.se>
Date: Tue, 24 Mar 2020 23:02:24 +0100
Subject: Move some datetime procedures to propper modules.

---
 module/datetime.scm            | 22 ++++++++++++++++++++++
 module/output/html.scm         | 29 +----------------------------
 module/vcomponent/datetime.scm | 10 ++++++++++
 3 files changed, 33 insertions(+), 28 deletions(-)

(limited to 'module')

diff --git a/module/datetime.scm b/module/datetime.scm
index 4a53ed95..aebc7433 100644
--- a/module/datetime.scm
+++ b/module/datetime.scm
@@ -648,6 +648,28 @@
 
 
 
+
+;; @example
+;; (time->decimal-hour #10:30:00) ; => 10.5
+;; @end example
+(define-public (time->decimal-hour time)
+  (exact->inexact (+ (hour time)
+                     (/ (minute time) 60)
+                     (/ (second time) 3600))))
+
+(define-public (datetime->decimal-hour dt)
+  (unless (and (zero? (month (get-date dt)))
+               (zero? (year (get-date dt))))
+    (error "Multi-month intervals not yet supported" dt))
+  ;; TODO
+  ;; (date-difference #2020-12-31 #2020-01-01) ; => 0000-11-30
+  ;; to get number of days in diff-time we need to count number of days
+  ;; in each month from start and forward
+  (+ (time->decimal-hour (get-time% dt))
+     (* (day (get-date dt)) 24)))
+
+
+
 ;;; Parsers for vcomponent usage
 
 ;; substring to number, local here
diff --git a/module/output/html.scm b/module/output/html.scm
index 70c9f17c..cf200ea3 100644
--- a/module/output/html.scm
+++ b/module/output/html.scm
@@ -31,25 +31,6 @@
    (datetime->string (as-datetime (attr ev 'DTSTART)) "~Y~m~d~H~M~S")
    (html-attr (attr ev 'UID))))
 
-;; This should only be used on time intervals, never on absolute times.
-;; For that see @var{date->decimal-hour}.
-;; NOTE Above comment probably deprecated
-(define (time->decimal-hour time)
-  (exact->inexact (+ (hour time)
-                     (/ (minute time) 60)
-                     (/ (second time) 3600))))
-
-(define (datetime->decimal-hour dt)
-  (unless (and (zero? (month (get-date dt)))
-               (zero? (year (get-date dt))))
-    (error "Multi-month intervals not yet supported" dt))
-  ;; TODO
-  ;; (date-difference #2020-12-31 #2020-01-01) ; => 0000-11-30
-  ;; to get number of days in diff-time we need to count number of days
-  ;; in each month from start and forward
-  (+ (time->decimal-hour ((@ (datetime) get-time%) dt))
-     (* (day (get-date dt)) 24)))
-
 ;; Retuns an HTML-safe version of @var{str}.
 (define (html-attr str)
   (define cs (char-set-adjoin char-set:letter+digit #\- #\_))
@@ -87,15 +68,7 @@
       (cons `(tr ,@row)
             (tablify rest width)))))
 
-;; An event is considered long if it's DTSTARt (and thereby DTEND) lacks a time component,
-;; or if the total length of the event is greater than 24h.
-;; For practical purposes, an event being long means that it shouldn't be rendered as a part
-;; of a regular day.
-(define (long-event? ev)
-  (or (date? (attr ev 'DTSTART))
-      (datetime<= (datetime date: (date day: 1))
-                  (datetime-difference (attr ev 'DTEND)
-                                       (attr ev 'DTSTART)))))
+
 
 
 (define (event-debug-html event)
diff --git a/module/vcomponent/datetime.scm b/module/vcomponent/datetime.scm
index 5df4dfab..b3940644 100644
--- a/module/vcomponent/datetime.scm
+++ b/module/vcomponent/datetime.scm
@@ -93,3 +93,13 @@ Event must have the DTSTART and DTEND attribute set."
 ;; 22:00 - 03:00
 ;; 2h för dag 1
 ;; 3h för dag 2
+
+;; An event is considered long if it's DTSTART (and thereby DTEND) lacks a time component,
+;; or if the total length of the event is greater than 24h.
+;; For practical purposes, an event being long means that it shouldn't be rendered as a part
+;; of a regular day.
+(define-public (long-event? ev)
+  (or (date? (attr ev 'DTSTART))
+      (datetime<= (datetime date: (date day: 1))
+                  (datetime-difference (attr ev 'DTEND)
+                                       (attr ev 'DTSTART)))))
-- 
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