Thy.present.scala Maven / Gradle / Ivy
/* Title: Pure/Thy/present.scala
Author: Makarius
Theory presentation: HTML.
*/
package isabelle
import scala.collection.immutable.SortedMap
object Present
{
/* session graph */
def session_graph(
parent_session: String,
parent_loaded: String => Boolean,
deps: List[Thy_Info.Dep]): Graph_Display.Graph =
{
val parent_session_node =
Graph_Display.Node("[" + parent_session + "]", "session." + parent_session)
def node(name: Document.Node.Name): Graph_Display.Node =
if (parent_loaded(name.theory)) parent_session_node
else Graph_Display.Node(name.theory, "theory." + name.theory)
(Graph_Display.empty_graph /: deps) {
case (g, dep) =>
if (parent_loaded(dep.name.theory)) g
else {
val a = node(dep.name)
val bs = dep.header.imports.map({ case (name, _) => node(name) })
((g /: (a :: bs))(_.default_node(_, Nil)) /: bs)(_.add_edge(_, a))
}
}
}
/* maintain chapter index -- NOT thread-safe */
private val index_path = Path.basic("index.html")
private val sessions_path = Path.basic(".sessions")
private def read_sessions(dir: Path): List[(String, String)] =
{
val path = dir + sessions_path
if (path.is_file) {
import XML.Decode._
list(pair(string, string))(YXML.parse_body(File.read(path)))
}
else Nil
}
private def write_sessions(dir: Path, sessions: List[(String, String)])
{
import XML.Encode._
File.write(dir + sessions_path, YXML.string_of_body(list(pair(string, string))(sessions)))
}
def update_chapter_index(info_path: Path, chapter: String, new_sessions: List[(String, String)])
{
val dir = info_path + Path.basic(chapter)
Isabelle_System.mkdirs(dir)
val sessions0 =
try { read_sessions(dir) }
catch { case _: XML.Error => Nil }
val sessions = (SortedMap.empty[String, String] ++ sessions0 ++ new_sessions).toList
write_sessions(dir, sessions)
File.write(dir + index_path, HTML.chapter_index(chapter, sessions))
}
}