Add [X]HTML5 DTD to header

[hcoop/portal.git] / util.sml

diff --git a/util.sml b/util.sml
index c56a011..9c269c1 100644 (file)
--- a/util.sml
+++ b/util.sml
@@ -29,11 +29,16 @@ fun makeSet f items =
 
 fun neg (r : real) = ~r
 fun add (r1 : real, r2) = r1 + r2
+fun sub (r1 : real, r2) = r1 - r2
+fun mult (r1, r2) = real r1 * r2
 
-fun isIdent ch = Char.isLower ch orelse Char.isDigit ch
+fun lt (r1 : real, r2) = r1 < r2
+fun ge (r1 : real, r2) = r1 >= r2
+
+fun isIdent ch = Char.isLower ch orelse Char.isDigit ch orelse ch = #"-"
 
 fun validHost s =
-    size s > 0 andalso size s < 20 andalso List.all isIdent (String.explode s)
+    size s > 0 andalso size s < 40 andalso List.all isIdent (String.explode s)
                                                  
 fun validDomain s =
     size s > 0 andalso size s < 100 andalso List.all validHost (String.fields (fn ch => ch = #".") s)
@@ -62,4 +67,46 @@ fun init () = rnd := Random.rand (SysWord.toInt (Posix.Process.pidToWord (Posix.
 
 fun randomPassword () = Int.toString (Int.abs (Random.randInt (!rnd)))
 
-end
\ No newline at end of file
+fun domainDir dom =
+    String.concatWith "/" ("/afs/hcoop.net/common/etc/domtool/nodes/deleuze" :: List.rev (String.fields (fn ch => ch = #".") dom))
+
+fun readFile fname =
+    let
+       val inf = TextIO.openIn fname
+
+       fun readLines lines =
+           case TextIO.inputLine inf of
+               NONE => String.concat (List.rev lines)
+             | SOME line => readLines (line :: lines)
+    in
+       readLines []
+       before TextIO.closeIn inf
+    end
+
+fun mem (x, ls) = List.exists (fn y => y = x) ls
+
+val allLower = CharVector.map Char.toLower
+
+fun normEmail s = case String.tokens Char.isSpace (allLower s) of
+                     s :: _ => s
+                   | [] => ""
+
+val s_cutoff = LargeInt.fromInt 60
+val m_cutoff = LargeInt.fromInt (60 * 60)
+val h_cutoff = LargeInt.fromInt (60 * 60 * 24)
+
+fun diffFromNow t =
+    let
+       val secs = Time.toSeconds (Time.- (Time.now (), t))
+    in
+       if LargeInt.< (secs, s_cutoff) then
+           LargeInt.toString secs ^ " seconds"
+       else if LargeInt.< (secs, m_cutoff) then
+           LargeInt.toString (LargeInt.div (secs, s_cutoff)) ^ " minutes"
+       else if LargeInt.< (secs, h_cutoff) then
+           LargeInt.toString (LargeInt.div (secs, m_cutoff)) ^ " hours"
+       else
+           LargeInt.toString (LargeInt.div (secs, h_cutoff)) ^ " days"
+    end
+
+end