X-Git-Url: http://git.kpe.io/?p=kmrcl.git;a=blobdiff_plain;f=datetime.lisp;h=51167a92444fae02ef97aab81809da28f4e6337c;hp=4a4dbe2e321feae2789864b0d657c82759a9a1c6;hb=e96b017d2a09ffd9c9279cb4c2341c53f0581022;hpb=98d7b650aa611a0de537ace581cde47c66071af3

diff --git a/datetime.lisp b/datetime.lisp
index 4a4dbe2..51167a9 100644
--- a/datetime.lisp
+++ b/datetime.lisp
@@ -68,6 +68,40 @@
     (t
      (format t "~,2F ~A" val unit))))
 
+(defconstant +posix-epoch+
+  (encode-universal-time 0 0 0 1 1 1970 0))
+
+(defun posix-time-to-utime (time)
+  (+ time +posix-epoch+))
+
+(defun utime-to-posix-time (utime)
+  (- utime +posix-epoch+))
+
+;; Monthnames taken from net-telent-date to support lml2
+
+(defvar *monthnames*
+  '((1 . "January")
+    (2 . "February")
+    (3 . "March")
+    (4 . "April")
+    (5 . "May")
+    (6 . "June")
+    (7 . "July")
+    (8 . "August")
+    (9 . "September")
+    (10 . "October")
+    (11 . "November")
+    (12 . "December")))
+
+(defun monthname (stream arg colon-p at-p &optional width (mincol 0) (colinc 1) (minpad 0) (padchar #\Space))
+  "Print the name of the month (1=January) corresponding to ARG on STREAM.  This is intended for embedding in a FORMAT directive: WIDTH governs the number of characters of text printed, MINCOL, COLINC, MINPAD, PADCHAR work as for ~A"
+  (let ((monthstring (cdr (assoc arg *monthnames*))))
+    (if (not monthstring) (return-from monthname nil))
+    (let ((truncate (if width (min width (length monthstring)) nil)))
+      (format stream
+              (if at-p "~V,V,V,V@A" "~V,V,V,VA")
+              mincol colinc minpad padchar
+              (subseq monthstring 0 truncate)))))
 
 ;;;; Daylight Saving Time calculations 
 
@@ -101,3 +135,4 @@
 ;; 2007  April 1   October 28    March 25       October 28
 ;; 2008  April 6   October 26    March 30       October 26
 
+