1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/Pure/Thy/html.scala Fri Dec 04 22:51:59 2009 +0100
1.3 @@ -0,0 +1,41 @@
1.4 +/* Title: Pure/Thy/html.scala
1.5 + Author: Makarius
1.6 +
1.7 +Basic HTML output.
1.8 +*/
1.9 +
1.10 +package isabelle
1.11 +
1.12 +object HTML
1.13 +{
1.14 + // common elements and attributes
1.15 +
1.16 + val BODY = "body"
1.17 + val DIV = "div"
1.18 + val SPAN = "span"
1.19 + val BR = "br"
1.20 + val CLASS = "class"
1.21 +
1.22 +
1.23 + // document markup
1.24 +
1.25 + def body(trees: List[XML.Tree]): XML.Tree =
1.26 + XML.Elem(BODY, Nil, trees)
1.27 +
1.28 + def div(trees: List[XML.Tree]): XML.Tree =
1.29 + XML.Elem(DIV, Nil, trees)
1.30 +
1.31 + val br: XML.Tree = XML.Elem(BR, Nil, Nil)
1.32 +
1.33 + def spans(tree: XML.Tree): List[XML.Tree] =
1.34 + tree match {
1.35 + case XML.Elem(name, _, ts) =>
1.36 + List(XML.Elem(SPAN, List((CLASS, name)), ts.flatMap(spans)))
1.37 + case text @ XML.Text(txt) =>
1.38 + txt.split("\n").toList match {
1.39 + case line :: lines if !lines.isEmpty =>
1.40 + XML.Text(line) :: lines.flatMap(l => List(br, XML.Text(l)))
1.41 + case _ => List(text)
1.42 + }
1.43 + }
1.44 +}