clarified modules;
authorwenzelm
Wed, 18 Nov 2020 15:52:12 +0100
changeset 72652 07edf1952ab1
parent 72651 52cb065aa916
child 72653 ea35afdb1366
clarified modules;
src/Pure/Admin/build_doc.scala
src/Pure/PIDE/resources.scala
src/Pure/System/isabelle_tool.scala
src/Pure/Thy/bibtex.scala
src/Pure/Thy/file_format.scala
src/Pure/Thy/present.scala
src/Pure/Thy/presentation.scala
src/Pure/Thy/sessions.scala
src/Pure/Tools/build.scala
src/Pure/build-jars
src/Tools/VSCode/src/preview_panel.scala
src/Tools/jEdit/src/document_model.scala
--- a/src/Pure/Admin/build_doc.scala	Wed Nov 18 15:47:53 2020 +0100
+++ b/src/Pure/Admin/build_doc.scala	Wed Nov 18 15:52:12 2020 +0100
@@ -50,7 +50,7 @@
     val errs =
       Par_List.map((doc_session: (String, String)) =>
         try {
-          Present.build_documents(doc_session._2, deps, store, progress = progress)
+          Presentation.build_documents(doc_session._2, deps, store, progress = progress)
           None
         }
         catch {
--- a/src/Pure/PIDE/resources.scala	Wed Nov 18 15:47:53 2020 +0100
+++ b/src/Pure/PIDE/resources.scala	Wed Nov 18 15:52:12 2020 +0100
@@ -56,7 +56,7 @@
   def make_theory_content(thy_name: Document.Node.Name): Option[String] =
     File_Format.registry.get_theory(thy_name).flatMap(_.make_theory_content(resources, thy_name))
 
-  def make_preview(snapshot: Document.Snapshot): Option[Present.Preview] =
+  def make_preview(snapshot: Document.Snapshot): Option[Presentation.Preview] =
     File_Format.registry.get(snapshot.node_name).flatMap(_.make_preview(snapshot))
 
   def is_hidden(name: Document.Node.Name): Boolean =
--- a/src/Pure/System/isabelle_tool.scala	Wed Nov 18 15:47:53 2020 +0100
+++ b/src/Pure/System/isabelle_tool.scala	Wed Nov 18 15:52:12 2020 +0100
@@ -155,7 +155,7 @@
   Phabricator.isabelle_tool2,
   Phabricator.isabelle_tool3,
   Phabricator.isabelle_tool4,
-  Present.isabelle_tool,
+  Presentation.isabelle_tool,
   Profiling_Report.isabelle_tool,
   Server.isabelle_tool,
   Sessions.isabelle_tool,
--- a/src/Pure/Thy/bibtex.scala	Wed Nov 18 15:47:53 2020 +0100
+++ b/src/Pure/Thy/bibtex.scala	Wed Nov 18 15:52:12 2020 +0100
@@ -29,7 +29,7 @@
     override def theory_content(name: String): String =
       """theory "bib" imports Pure begin bibtex_file """ + quote(name) + """ end"""
 
-    override def make_preview(snapshot: Document.Snapshot): Option[Present.Preview] =
+    override def make_preview(snapshot: Document.Snapshot): Option[Presentation.Preview] =
     {
       val name = snapshot.node_name
       if (detect(name.node)) {
@@ -39,7 +39,7 @@
             File.write(bib, snapshot.node.source)
             Bibtex.html_output(List(bib), style = "unsort", title = title)
           }
-        Some(Present.Preview(title, content))
+        Some(Presentation.Preview(title, content))
       }
       else None
     }
--- a/src/Pure/Thy/file_format.scala	Wed Nov 18 15:47:53 2020 +0100
+++ b/src/Pure/Thy/file_format.scala	Wed Nov 18 15:52:12 2020 +0100
@@ -88,7 +88,7 @@
     } yield s
   }
 
-  def make_preview(snapshot: Document.Snapshot): Option[Present.Preview] = None
+  def make_preview(snapshot: Document.Snapshot): Option[Presentation.Preview] = None
 
 
   /* PIDE session agent */
--- a/src/Pure/Thy/present.scala	Wed Nov 18 15:47:53 2020 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,488 +0,0 @@
-/*  Title:      Pure/Thy/present.scala
-    Author:     Makarius
-
-Theory presentation: HTML and LaTeX documents.
-*/
-
-package isabelle
-
-
-import scala.collection.immutable.SortedMap
-
-
-object Present
-{
-  /* document variants */
-
-  object Document_Variant
-  {
-    def parse(s: String): Document_Variant =
-      Library.space_explode('=', s) match {
-        case List(name) => Document_Variant(name)
-        case List(name, tags) => Document_Variant(name, Library.space_explode(',', tags))
-        case _ => error("Malformed document variant: " + quote(s))
-      }
-  }
-
-  sealed case class Document_Variant(name: String, tags: List[String] = Nil)
-  {
-    def print: String = if (tags.isEmpty) name else name + "=" + tags.mkString(",")
-    def path: Path = Path.basic(name)
-    def latex_sty: String =
-      Library.terminate_lines(
-        tags.map(tag =>
-          tag.toList match {
-            case '/' :: cs => "\\isafoldtag{" + cs.mkString + "}"
-            case '-' :: cs => "\\isadroptag{" + cs.mkString + "}"
-            case '+' :: cs => "\\isakeeptag{" + cs.mkString + "}"
-            case cs => "\\isakeeptag{" + cs.mkString + "}"
-          }))
-  }
-
-
-  /* presentation context */
-
-  object Context
-  {
-    val none: Context = new Context { def enabled: Boolean = false }
-    val standard: Context = new Context { def enabled: Boolean = true }
-
-    def dir(path: Path): Context =
-      new Context {
-        def enabled: Boolean = true
-        override def dir(store: Sessions.Store): Path = path
-      }
-
-    def make(s: String): Context =
-      if (s == ":") standard else dir(Path.explode(s))
-  }
-
-  abstract class Context private
-  {
-    def enabled: Boolean
-    def enabled(info: Sessions.Info): Boolean = enabled || info.browser_info
-    def dir(store: Sessions.Store): Path = store.presentation_dir
-    def dir(store: Sessions.Store, info: Sessions.Info): Path =
-      dir(store) + Path.basic(info.chapter) + Path.basic(info.name)
-  }
-
-
-  /* maintain chapter index -- NOT thread-safe */
-
-  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))(Symbol.decode_yxml(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(browser_info: Path, chapter: String, new_sessions: List[(String, String)])
-  {
-    val dir = Isabelle_System.make_directory(browser_info + Path.basic(chapter))
-
-    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)
-
-    val title = "Isabelle/" + chapter + " sessions"
-    HTML.write_document(dir, "index.html",
-      List(HTML.title(title + " (" + Distribution.version + ")")),
-      HTML.chapter(title) ::
-       (if (sessions.isEmpty) Nil
-        else
-          List(HTML.div("sessions",
-            List(HTML.description(
-              sessions.map({ case (name, description) =>
-                val descr = Symbol.trim_blank_lines(description)
-                (List(HTML.link(name + "/index.html", HTML.text(name))),
-                  if (descr == "") Nil
-                  else HTML.break ::: List(HTML.pre(HTML.text(descr)))) })))))))
-  }
-
-  def make_global_index(browser_info: Path)
-  {
-    if (!(browser_info + Path.explode("index.html")).is_file) {
-      Isabelle_System.make_directory(browser_info)
-      File.copy(Path.explode("~~/lib/logo/isabelle.gif"),
-        browser_info + Path.explode("isabelle.gif"))
-      File.write(browser_info + Path.explode("index.html"),
-        File.read(Path.explode("~~/lib/html/library_index_header.template")) +
-        File.read(Path.explode("~~/lib/html/library_index_content.template")) +
-        File.read(Path.explode("~~/lib/html/library_index_footer.template")))
-    }
-  }
-
-
-  /* present session */
-
-  val session_graph_path = Path.explode("session_graph.pdf")
-  val readme_path = Path.basic("README.html")
-
-  def html_name(name: Document.Node.Name): String = name.theory_base_name + ".html"
-  def document_html_name(name: Document.Node.Name): String = "document/" + html_name(name)
-
-  def theory_link(name: Document.Node.Name): XML.Tree =
-    HTML.link(html_name(name), HTML.text(name.theory_base_name))
-
-  def session_html(
-    session: String,
-    deps: Sessions.Deps,
-    store: Sessions.Store,
-    presentation: Context): Path =
-  {
-    val info = deps.sessions_structure(session)
-    val options = info.options
-    val base = deps(session)
-
-    val session_dir = presentation.dir(store, info)
-    val session_fonts = Isabelle_System.make_directory(session_dir + Path.explode("fonts"))
-    for (entry <- Isabelle_Fonts.fonts(hidden = true))
-      File.copy(entry.path, session_fonts)
-
-    Bytes.write(session_dir + session_graph_path,
-      graphview.Graph_File.make_pdf(options, base.session_graph_display))
-
-    val links =
-    {
-      val deps_link =
-        HTML.link(session_graph_path, HTML.text("theory dependencies"))
-
-      val readme_links =
-        if ((info.dir + readme_path).is_file) {
-          File.copy(info.dir + readme_path, session_dir + readme_path)
-          List(HTML.link(readme_path, HTML.text("README")))
-        }
-        else Nil
-
-      val document_links =
-        for (doc <- info.documents)
-          yield HTML.link(doc.path.pdf, HTML.text(doc.name))
-
-      Library.separate(HTML.break ::: HTML.nl,
-        (deps_link :: readme_links ::: document_links).
-          map(link => HTML.text("View ") ::: List(link))).flatten
-    }
-
-    val theories =
-      using(Export.open_database_context(deps.sessions_structure, store))(context =>
-        for {
-          name <- base.session_theories
-          entry <- context.try_entry(session, name.theory, document_html_name(name))
-        } yield name -> entry.uncompressed(cache = store.xz_cache))
-
-    val theories_body =
-      HTML.itemize(for ((name, _) <- theories) yield List(theory_link(name)))
-
-    val title = "Session " + session
-    HTML.write_document(session_dir, "index.html",
-      List(HTML.title(title + " (" + Distribution.version + ")")),
-      HTML.div("head", List(HTML.chapter(title), HTML.par(links))) ::
-       (if (theories.isEmpty) Nil
-        else List(HTML.div("theories", List(HTML.section("Theories"), theories_body)))))
-
-    for ((name, html) <- theories) Bytes.write(session_dir + Path.basic(html_name(name)), html)
-
-    session_dir
-  }
-
-
-  /** preview **/
-
-  sealed case class Preview(title: String, content: String)
-
-  def preview(
-    resources: Resources,
-    snapshot: Document.Snapshot,
-    plain_text: Boolean = false,
-    fonts_url: String => String = HTML.fonts_url()): Preview =
-  {
-    require(!snapshot.is_outdated)
-
-    def output_document(title: String, body: XML.Body): String =
-      HTML.output_document(
-        List(
-          HTML.style(HTML.fonts_css(fonts_url) + "\n\n" + File.read(HTML.isabelle_css)),
-          HTML.title(title)),
-        List(HTML.source(body)), css = "", structural = false)
-
-    val name = snapshot.node_name
-
-    if (plain_text) {
-      val title = "File " + quote(name.path.file_name)
-      val content = output_document(title, HTML.text(snapshot.node.source))
-      Preview(title, content)
-    }
-    else {
-      resources.make_preview(snapshot) match {
-        case Some(preview) => preview
-        case None =>
-          val title =
-            if (name.is_theory) "Theory " + quote(name.theory_base_name)
-            else "File " + quote(name.path.file_name)
-          val content = output_document(title, pide_document(snapshot))
-          Preview(title, content)
-      }
-    }
-  }
-
-
-  /* PIDE document */
-
-  private val document_elements =
-    Rendering.foreground_elements ++ Rendering.text_color_elements ++ Rendering.markdown_elements +
-    Markup.NUMERAL + Markup.COMMENT + Markup.LANGUAGE
-
-  private val div_elements =
-    Set(HTML.div.name, HTML.pre.name, HTML.par.name, HTML.list.name, HTML.enum.name,
-      HTML.descr.name)
-
-  private def html_div(html: XML.Body): Boolean =
-    html exists {
-      case XML.Elem(markup, body) => div_elements.contains(markup.name) || html_div(body)
-      case XML.Text(_) => false
-    }
-
-  private def html_class(c: String, html: XML.Body): XML.Tree =
-    if (html.forall(_ == HTML.no_text)) HTML.no_text
-    else if (html_div(html)) HTML.div(c, html)
-    else HTML.span(c, html)
-
-  private def make_html(xml: XML.Body): XML.Body =
-    xml map {
-      case XML.Elem(Markup(Markup.LANGUAGE, Markup.Name(Markup.Language.DOCUMENT)), body) =>
-        html_class(Markup.Language.DOCUMENT, make_html(body))
-      case XML.Elem(Markup(Markup.MARKDOWN_PARAGRAPH, _), body) => HTML.par(make_html(body))
-      case XML.Elem(Markup(Markup.MARKDOWN_ITEM, _), body) => HTML.item(make_html(body))
-      case XML.Elem(Markup(Markup.Markdown_Bullet.name, _), _) => HTML.no_text
-      case XML.Elem(Markup.Markdown_List(kind), body) =>
-        if (kind == Markup.ENUMERATE) HTML.enum(make_html(body)) else HTML.list(make_html(body))
-      case XML.Elem(markup, body) =>
-        val name = markup.name
-        val html =
-          markup.properties match {
-            case Markup.Kind(kind) if kind == Markup.COMMAND || kind == Markup.KEYWORD =>
-              List(html_class(kind, make_html(body)))
-            case _ =>
-              make_html(body)
-          }
-        Rendering.foreground.get(name) orElse Rendering.text_color.get(name) match {
-          case Some(c) => html_class(c.toString, html)
-          case None => html_class(name, html)
-        }
-      case XML.Text(text) =>
-        XML.Text(Symbol.decode(text))
-    }
-
-  def pide_document(snapshot: Document.Snapshot): XML.Body =
-    make_html(snapshot.markup_to_XML(Text.Range.full, document_elements))
-
-
-
-  /** build documents **/
-
-  val session_tex_path = Path.explode("session.tex")
-
-  def tex_name(name: Document.Node.Name): String = name.theory_base_name + ".tex"
-  def document_tex_name(name: Document.Node.Name): String = "document/" + tex_name(name)
-
-  def build_documents(
-    session: String,
-    deps: Sessions.Deps,
-    store: Sessions.Store,
-    progress: Progress = new Progress,
-    presentation: Context = Context.none,
-    verbose: Boolean = false,
-    verbose_latex: Boolean = false): List[(Document_Variant, Bytes)] =
-  {
-    /* session info */
-
-    val info = deps.sessions_structure(session)
-    val options = info.options
-    val base = deps(session)
-    val graph_pdf = graphview.Graph_File.make_pdf(options, base.session_graph_display)
-
-
-    /* prepare document directory */
-
-    lazy val tex_files =
-      using(Export.open_database_context(deps.sessions_structure, store))(context =>
-        for (name <- base.session_theories ::: base.document_theories)
-        yield {
-          val entry = context.entry(session, name.theory, document_tex_name(name))
-          Path.basic(tex_name(name)) -> entry.uncompressed(cache = store.xz_cache)
-        }
-      )
-
-    def prepare_dir(dir: Path, doc: Document_Variant): (Path, String) =
-    {
-      val doc_dir = dir + Path.basic(doc.name)
-      Isabelle_System.make_directory(doc_dir)
-
-      Isabelle_System.bash("isabelle latex -o sty", cwd = doc_dir.file).check
-      File.write(doc_dir + Path.explode("isabelletags.sty"), doc.latex_sty)
-      for ((base_dir, src) <- info.document_files) File.copy_base(info.dir + base_dir, src, doc_dir)
-      Bytes.write(doc_dir + session_graph_path, graph_pdf)
-
-      File.write(doc_dir + session_tex_path,
-        Library.terminate_lines(
-          base.session_theories.map(name => "\\input{" + tex_name(name) + "}")))
-
-      for ((path, tex) <- tex_files) Bytes.write(doc_dir + path, tex)
-
-      val root1 = "root_" + doc.name
-      val root = if ((doc_dir + Path.explode(root1).tex).is_file) root1 else "root"
-
-      (doc_dir, root)
-    }
-
-
-    /* produce documents */
-
-    val doc_output = info.document_output
-
-    val documents =
-      for (doc <- info.documents)
-      yield {
-        Isabelle_System.with_tmp_dir("document")(tmp_dir =>
-        {
-          val (doc_dir, root) = prepare_dir(tmp_dir, doc)
-          doc_output.foreach(prepare_dir(_, doc))
-
-
-          // bash scripts
-
-          def root_bash(ext: String): String = Bash.string(root + "." + ext)
-
-          def latex_bash(fmt: String = "pdf", ext: String = "tex"): String =
-            "isabelle latex -o " + Bash.string(fmt) + " " + Bash.string(root + "." + ext)
-
-          def bash(items: String*): Process_Result =
-            progress.bash(items.mkString(" && "), cwd = doc_dir.file,
-              echo = verbose_latex, watchdog = Time.seconds(0.5))
-
-
-          // prepare document
-
-          val result =
-            if ((doc_dir + Path.explode("build")).is_file) {
-              bash("./build pdf " + Bash.string(doc.name))
-            }
-            else {
-              bash(
-                latex_bash(),
-                "{ [ ! -f " + root_bash("bib") + " ] || " + latex_bash("bbl") + "; }",
-                "{ [ ! -f " + root_bash("idx") + " ] || " + latex_bash("idx") + "; }",
-                latex_bash(),
-                latex_bash())
-            }
-
-
-          // result
-
-          val root_pdf = Path.basic(root).pdf
-          val result_path = doc_dir + root_pdf
-
-          if (!result.ok) {
-            cat_error(
-              Library.trim_line(result.err),
-              cat_lines(Latex.latex_errors(doc_dir, root) ::: Bibtex.bibtex_errors(doc_dir, root)),
-              "Failed to build document " + quote(doc.name))
-          }
-          else if (!result_path.is_file) {
-            error("Bad document result: expected to find " + root_pdf)
-          }
-          else doc -> Bytes.read(result_path)
-        })
-      }
-
-    def output(dir: Path)
-    {
-      Isabelle_System.make_directory(dir)
-      for ((doc, pdf) <- documents) {
-        val path = dir + doc.path.pdf
-        Bytes.write(path, pdf)
-        progress.echo_document(path)
-      }
-    }
-
-    if (presentation.enabled(info) || doc_output.isEmpty) {
-      output(presentation.dir(store, info))
-    }
-
-    doc_output.foreach(output)
-
-    documents
-  }
-
-
-  /* Isabelle tool wrapper */
-
-  val isabelle_tool =
-    Isabelle_Tool("document", "prepare session theory document", args =>
-    {
-      var presentation = Present.Context.none
-      var verbose_latex = false
-      var dirs: List[Path] = Nil
-      var options = Options.init()
-      var verbose_build = false
-
-      val getopts = Getopts(
-        """
-Usage: isabelle document [OPTIONS] SESSION
-
-  Options are:
-    -P DIR       enable HTML/PDF presentation in directory (":" for default)
-    -O           set option "document_output", relative to current directory
-    -V           verbose latex
-    -d DIR       include session directory
-    -o OPTION    override Isabelle system OPTION (via NAME=VAL or NAME)
-    -v           verbose build
-
-  Prepare the theory document of a session.
-""",
-        "P:" -> (arg => presentation = Context.make(arg)),
-        "O:" -> (arg => options += ("document_output=" + Path.explode(arg).absolute.implode)),
-        "V" -> (_ => verbose_latex = true),
-        "d:" -> (arg => dirs = dirs ::: List(Path.explode(arg))),
-        "o:" -> (arg => options = options + arg),
-        "v" -> (_ => verbose_build = true))
-
-      val more_args = getopts(args)
-      val session =
-        more_args match {
-          case List(a) => a
-          case _ => getopts.usage()
-        }
-
-      val progress = new Console_Progress(verbose = verbose_build)
-      val store = Sessions.store(options)
-
-      progress.interrupt_handler {
-        val res =
-          Build.build(options, selection = Sessions.Selection.session(session),
-            dirs = dirs, progress = progress, verbose = verbose_build)
-        if (!res.ok) error("Failed to build session " + quote(session))
-
-        val deps =
-          Sessions.load_structure(options + "document=pdf", dirs = dirs).
-            selection_deps(Sessions.Selection.session(session))
-
-        build_documents(session, deps, store, progress = progress,
-          presentation = presentation, verbose = true, verbose_latex = verbose_latex)
-      }
-    })
-}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Pure/Thy/presentation.scala	Wed Nov 18 15:52:12 2020 +0100
@@ -0,0 +1,488 @@
+/*  Title:      Pure/Thy/present.scala
+    Author:     Makarius
+
+Theory presentation: HTML and LaTeX documents.
+*/
+
+package isabelle
+
+
+import scala.collection.immutable.SortedMap
+
+
+object Presentation
+{
+  /* document variants */
+
+  object Document_Variant
+  {
+    def parse(s: String): Document_Variant =
+      Library.space_explode('=', s) match {
+        case List(name) => Document_Variant(name)
+        case List(name, tags) => Document_Variant(name, Library.space_explode(',', tags))
+        case _ => error("Malformed document variant: " + quote(s))
+      }
+  }
+
+  sealed case class Document_Variant(name: String, tags: List[String] = Nil)
+  {
+    def print: String = if (tags.isEmpty) name else name + "=" + tags.mkString(",")
+    def path: Path = Path.basic(name)
+    def latex_sty: String =
+      Library.terminate_lines(
+        tags.map(tag =>
+          tag.toList match {
+            case '/' :: cs => "\\isafoldtag{" + cs.mkString + "}"
+            case '-' :: cs => "\\isadroptag{" + cs.mkString + "}"
+            case '+' :: cs => "\\isakeeptag{" + cs.mkString + "}"
+            case cs => "\\isakeeptag{" + cs.mkString + "}"
+          }))
+  }
+
+
+  /* presentation context */
+
+  object Context
+  {
+    val none: Context = new Context { def enabled: Boolean = false }
+    val standard: Context = new Context { def enabled: Boolean = true }
+
+    def dir(path: Path): Context =
+      new Context {
+        def enabled: Boolean = true
+        override def dir(store: Sessions.Store): Path = path
+      }
+
+    def make(s: String): Context =
+      if (s == ":") standard else dir(Path.explode(s))
+  }
+
+  abstract class Context private
+  {
+    def enabled: Boolean
+    def enabled(info: Sessions.Info): Boolean = enabled || info.browser_info
+    def dir(store: Sessions.Store): Path = store.presentation_dir
+    def dir(store: Sessions.Store, info: Sessions.Info): Path =
+      dir(store) + Path.basic(info.chapter) + Path.basic(info.name)
+  }
+
+
+  /* maintain chapter index -- NOT thread-safe */
+
+  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))(Symbol.decode_yxml(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(browser_info: Path, chapter: String, new_sessions: List[(String, String)])
+  {
+    val dir = Isabelle_System.make_directory(browser_info + Path.basic(chapter))
+
+    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)
+
+    val title = "Isabelle/" + chapter + " sessions"
+    HTML.write_document(dir, "index.html",
+      List(HTML.title(title + " (" + Distribution.version + ")")),
+      HTML.chapter(title) ::
+       (if (sessions.isEmpty) Nil
+        else
+          List(HTML.div("sessions",
+            List(HTML.description(
+              sessions.map({ case (name, description) =>
+                val descr = Symbol.trim_blank_lines(description)
+                (List(HTML.link(name + "/index.html", HTML.text(name))),
+                  if (descr == "") Nil
+                  else HTML.break ::: List(HTML.pre(HTML.text(descr)))) })))))))
+  }
+
+  def make_global_index(browser_info: Path)
+  {
+    if (!(browser_info + Path.explode("index.html")).is_file) {
+      Isabelle_System.make_directory(browser_info)
+      File.copy(Path.explode("~~/lib/logo/isabelle.gif"),
+        browser_info + Path.explode("isabelle.gif"))
+      File.write(browser_info + Path.explode("index.html"),
+        File.read(Path.explode("~~/lib/html/library_index_header.template")) +
+        File.read(Path.explode("~~/lib/html/library_index_content.template")) +
+        File.read(Path.explode("~~/lib/html/library_index_footer.template")))
+    }
+  }
+
+
+  /* present session */
+
+  val session_graph_path = Path.explode("session_graph.pdf")
+  val readme_path = Path.basic("README.html")
+
+  def html_name(name: Document.Node.Name): String = name.theory_base_name + ".html"
+  def document_html_name(name: Document.Node.Name): String = "document/" + html_name(name)
+
+  def theory_link(name: Document.Node.Name): XML.Tree =
+    HTML.link(html_name(name), HTML.text(name.theory_base_name))
+
+  def session_html(
+    session: String,
+    deps: Sessions.Deps,
+    store: Sessions.Store,
+    presentation: Context): Path =
+  {
+    val info = deps.sessions_structure(session)
+    val options = info.options
+    val base = deps(session)
+
+    val session_dir = presentation.dir(store, info)
+    val session_fonts = Isabelle_System.make_directory(session_dir + Path.explode("fonts"))
+    for (entry <- Isabelle_Fonts.fonts(hidden = true))
+      File.copy(entry.path, session_fonts)
+
+    Bytes.write(session_dir + session_graph_path,
+      graphview.Graph_File.make_pdf(options, base.session_graph_display))
+
+    val links =
+    {
+      val deps_link =
+        HTML.link(session_graph_path, HTML.text("theory dependencies"))
+
+      val readme_links =
+        if ((info.dir + readme_path).is_file) {
+          File.copy(info.dir + readme_path, session_dir + readme_path)
+          List(HTML.link(readme_path, HTML.text("README")))
+        }
+        else Nil
+
+      val document_links =
+        for (doc <- info.documents)
+          yield HTML.link(doc.path.pdf, HTML.text(doc.name))
+
+      Library.separate(HTML.break ::: HTML.nl,
+        (deps_link :: readme_links ::: document_links).
+          map(link => HTML.text("View ") ::: List(link))).flatten
+    }
+
+    val theories =
+      using(Export.open_database_context(deps.sessions_structure, store))(context =>
+        for {
+          name <- base.session_theories
+          entry <- context.try_entry(session, name.theory, document_html_name(name))
+        } yield name -> entry.uncompressed(cache = store.xz_cache))
+
+    val theories_body =
+      HTML.itemize(for ((name, _) <- theories) yield List(theory_link(name)))
+
+    val title = "Session " + session
+    HTML.write_document(session_dir, "index.html",
+      List(HTML.title(title + " (" + Distribution.version + ")")),
+      HTML.div("head", List(HTML.chapter(title), HTML.par(links))) ::
+       (if (theories.isEmpty) Nil
+        else List(HTML.div("theories", List(HTML.section("Theories"), theories_body)))))
+
+    for ((name, html) <- theories) Bytes.write(session_dir + Path.basic(html_name(name)), html)
+
+    session_dir
+  }
+
+
+  /** preview **/
+
+  sealed case class Preview(title: String, content: String)
+
+  def preview(
+    resources: Resources,
+    snapshot: Document.Snapshot,
+    plain_text: Boolean = false,
+    fonts_url: String => String = HTML.fonts_url()): Preview =
+  {
+    require(!snapshot.is_outdated)
+
+    def output_document(title: String, body: XML.Body): String =
+      HTML.output_document(
+        List(
+          HTML.style(HTML.fonts_css(fonts_url) + "\n\n" + File.read(HTML.isabelle_css)),
+          HTML.title(title)),
+        List(HTML.source(body)), css = "", structural = false)
+
+    val name = snapshot.node_name
+
+    if (plain_text) {
+      val title = "File " + quote(name.path.file_name)
+      val content = output_document(title, HTML.text(snapshot.node.source))
+      Preview(title, content)
+    }
+    else {
+      resources.make_preview(snapshot) match {
+        case Some(preview) => preview
+        case None =>
+          val title =
+            if (name.is_theory) "Theory " + quote(name.theory_base_name)
+            else "File " + quote(name.path.file_name)
+          val content = output_document(title, pide_document(snapshot))
+          Preview(title, content)
+      }
+    }
+  }
+
+
+  /* PIDE document */
+
+  private val document_elements =
+    Rendering.foreground_elements ++ Rendering.text_color_elements ++ Rendering.markdown_elements +
+    Markup.NUMERAL + Markup.COMMENT + Markup.LANGUAGE
+
+  private val div_elements =
+    Set(HTML.div.name, HTML.pre.name, HTML.par.name, HTML.list.name, HTML.enum.name,
+      HTML.descr.name)
+
+  private def html_div(html: XML.Body): Boolean =
+    html exists {
+      case XML.Elem(markup, body) => div_elements.contains(markup.name) || html_div(body)
+      case XML.Text(_) => false
+    }
+
+  private def html_class(c: String, html: XML.Body): XML.Tree =
+    if (html.forall(_ == HTML.no_text)) HTML.no_text
+    else if (html_div(html)) HTML.div(c, html)
+    else HTML.span(c, html)
+
+  private def make_html(xml: XML.Body): XML.Body =
+    xml map {
+      case XML.Elem(Markup(Markup.LANGUAGE, Markup.Name(Markup.Language.DOCUMENT)), body) =>
+        html_class(Markup.Language.DOCUMENT, make_html(body))
+      case XML.Elem(Markup(Markup.MARKDOWN_PARAGRAPH, _), body) => HTML.par(make_html(body))
+      case XML.Elem(Markup(Markup.MARKDOWN_ITEM, _), body) => HTML.item(make_html(body))
+      case XML.Elem(Markup(Markup.Markdown_Bullet.name, _), _) => HTML.no_text
+      case XML.Elem(Markup.Markdown_List(kind), body) =>
+        if (kind == Markup.ENUMERATE) HTML.enum(make_html(body)) else HTML.list(make_html(body))
+      case XML.Elem(markup, body) =>
+        val name = markup.name
+        val html =
+          markup.properties match {
+            case Markup.Kind(kind) if kind == Markup.COMMAND || kind == Markup.KEYWORD =>
+              List(html_class(kind, make_html(body)))
+            case _ =>
+              make_html(body)
+          }
+        Rendering.foreground.get(name) orElse Rendering.text_color.get(name) match {
+          case Some(c) => html_class(c.toString, html)
+          case None => html_class(name, html)
+        }
+      case XML.Text(text) =>
+        XML.Text(Symbol.decode(text))
+    }
+
+  def pide_document(snapshot: Document.Snapshot): XML.Body =
+    make_html(snapshot.markup_to_XML(Text.Range.full, document_elements))
+
+
+
+  /** build documents **/
+
+  val session_tex_path = Path.explode("session.tex")
+
+  def tex_name(name: Document.Node.Name): String = name.theory_base_name + ".tex"
+  def document_tex_name(name: Document.Node.Name): String = "document/" + tex_name(name)
+
+  def build_documents(
+    session: String,
+    deps: Sessions.Deps,
+    store: Sessions.Store,
+    progress: Progress = new Progress,
+    presentation: Context = Context.none,
+    verbose: Boolean = false,
+    verbose_latex: Boolean = false): List[(Document_Variant, Bytes)] =
+  {
+    /* session info */
+
+    val info = deps.sessions_structure(session)
+    val options = info.options
+    val base = deps(session)
+    val graph_pdf = graphview.Graph_File.make_pdf(options, base.session_graph_display)
+
+
+    /* prepare document directory */
+
+    lazy val tex_files =
+      using(Export.open_database_context(deps.sessions_structure, store))(context =>
+        for (name <- base.session_theories ::: base.document_theories)
+        yield {
+          val entry = context.entry(session, name.theory, document_tex_name(name))
+          Path.basic(tex_name(name)) -> entry.uncompressed(cache = store.xz_cache)
+        }
+      )
+
+    def prepare_dir(dir: Path, doc: Document_Variant): (Path, String) =
+    {
+      val doc_dir = dir + Path.basic(doc.name)
+      Isabelle_System.make_directory(doc_dir)
+
+      Isabelle_System.bash("isabelle latex -o sty", cwd = doc_dir.file).check
+      File.write(doc_dir + Path.explode("isabelletags.sty"), doc.latex_sty)
+      for ((base_dir, src) <- info.document_files) File.copy_base(info.dir + base_dir, src, doc_dir)
+      Bytes.write(doc_dir + session_graph_path, graph_pdf)
+
+      File.write(doc_dir + session_tex_path,
+        Library.terminate_lines(
+          base.session_theories.map(name => "\\input{" + tex_name(name) + "}")))
+
+      for ((path, tex) <- tex_files) Bytes.write(doc_dir + path, tex)
+
+      val root1 = "root_" + doc.name
+      val root = if ((doc_dir + Path.explode(root1).tex).is_file) root1 else "root"
+
+      (doc_dir, root)
+    }
+
+
+    /* produce documents */
+
+    val doc_output = info.document_output
+
+    val documents =
+      for (doc <- info.documents)
+      yield {
+        Isabelle_System.with_tmp_dir("document")(tmp_dir =>
+        {
+          val (doc_dir, root) = prepare_dir(tmp_dir, doc)
+          doc_output.foreach(prepare_dir(_, doc))
+
+
+          // bash scripts
+
+          def root_bash(ext: String): String = Bash.string(root + "." + ext)
+
+          def latex_bash(fmt: String = "pdf", ext: String = "tex"): String =
+            "isabelle latex -o " + Bash.string(fmt) + " " + Bash.string(root + "." + ext)
+
+          def bash(items: String*): Process_Result =
+            progress.bash(items.mkString(" && "), cwd = doc_dir.file,
+              echo = verbose_latex, watchdog = Time.seconds(0.5))
+
+
+          // prepare document
+
+          val result =
+            if ((doc_dir + Path.explode("build")).is_file) {
+              bash("./build pdf " + Bash.string(doc.name))
+            }
+            else {
+              bash(
+                latex_bash(),
+                "{ [ ! -f " + root_bash("bib") + " ] || " + latex_bash("bbl") + "; }",
+                "{ [ ! -f " + root_bash("idx") + " ] || " + latex_bash("idx") + "; }",
+                latex_bash(),
+                latex_bash())
+            }
+
+
+          // result
+
+          val root_pdf = Path.basic(root).pdf
+          val result_path = doc_dir + root_pdf
+
+          if (!result.ok) {
+            cat_error(
+              Library.trim_line(result.err),
+              cat_lines(Latex.latex_errors(doc_dir, root) ::: Bibtex.bibtex_errors(doc_dir, root)),
+              "Failed to build document " + quote(doc.name))
+          }
+          else if (!result_path.is_file) {
+            error("Bad document result: expected to find " + root_pdf)
+          }
+          else doc -> Bytes.read(result_path)
+        })
+      }
+
+    def output(dir: Path)
+    {
+      Isabelle_System.make_directory(dir)
+      for ((doc, pdf) <- documents) {
+        val path = dir + doc.path.pdf
+        Bytes.write(path, pdf)
+        progress.echo_document(path)
+      }
+    }
+
+    if (presentation.enabled(info) || doc_output.isEmpty) {
+      output(presentation.dir(store, info))
+    }
+
+    doc_output.foreach(output)
+
+    documents
+  }
+
+
+  /* Isabelle tool wrapper */
+
+  val isabelle_tool =
+    Isabelle_Tool("document", "prepare session theory document", args =>
+    {
+      var presentation = Presentation.Context.none
+      var verbose_latex = false
+      var dirs: List[Path] = Nil
+      var options = Options.init()
+      var verbose_build = false
+
+      val getopts = Getopts(
+        """
+Usage: isabelle document [OPTIONS] SESSION
+
+  Options are:
+    -P DIR       enable HTML/PDF presentation in directory (":" for default)
+    -O           set option "document_output", relative to current directory
+    -V           verbose latex
+    -d DIR       include session directory
+    -o OPTION    override Isabelle system OPTION (via NAME=VAL or NAME)
+    -v           verbose build
+
+  Prepare the theory document of a session.
+""",
+        "P:" -> (arg => presentation = Context.make(arg)),
+        "O:" -> (arg => options += ("document_output=" + Path.explode(arg).absolute.implode)),
+        "V" -> (_ => verbose_latex = true),
+        "d:" -> (arg => dirs = dirs ::: List(Path.explode(arg))),
+        "o:" -> (arg => options = options + arg),
+        "v" -> (_ => verbose_build = true))
+
+      val more_args = getopts(args)
+      val session =
+        more_args match {
+          case List(a) => a
+          case _ => getopts.usage()
+        }
+
+      val progress = new Console_Progress(verbose = verbose_build)
+      val store = Sessions.store(options)
+
+      progress.interrupt_handler {
+        val res =
+          Build.build(options, selection = Sessions.Selection.session(session),
+            dirs = dirs, progress = progress, verbose = verbose_build)
+        if (!res.ok) error("Failed to build session " + quote(session))
+
+        val deps =
+          Sessions.load_structure(options + "document=pdf", dirs = dirs).
+            selection_deps(Sessions.Selection.session(session))
+
+        build_documents(session, deps, store, progress = progress,
+          presentation = presentation, verbose = true, verbose_latex = verbose_latex)
+      }
+    })
+}
--- a/src/Pure/Thy/sessions.scala	Wed Nov 18 15:47:53 2020 +0100
+++ b/src/Pure/Thy/sessions.scala	Wed Nov 18 15:52:12 2020 +0100
@@ -492,11 +492,11 @@
         case doc => error("Bad document specification " + quote(doc))
       }
 
-    def documents_variants: List[Present.Document_Variant] =
+    def documents_variants: List[Presentation.Document_Variant] =
     {
       val variants =
         Library.space_explode(':', options.string("document_variants")).
-          map(Present.Document_Variant.parse)
+          map(Presentation.Document_Variant.parse)
 
       val dups = Library.duplicates(variants.map(_.name))
       if (dups.nonEmpty) error("Duplicate document variants: " + commas_quote(dups))
@@ -504,7 +504,7 @@
       variants
     }
 
-    def documents: List[Present.Document_Variant] =
+    def documents: List[Presentation.Document_Variant] =
     {
       val variants = documents_variants
       if (!document_enabled || document_files.isEmpty) Nil else variants
--- a/src/Pure/Tools/build.scala	Wed Nov 18 15:47:53 2020 +0100
+++ b/src/Pure/Tools/build.scala	Wed Nov 18 15:52:12 2020 +0100
@@ -158,7 +158,7 @@
     deps: Sessions.Deps,
     store: Sessions.Store,
     do_store: Boolean,
-    presentation: Present.Context,
+    presentation: Presentation.Context,
     verbose: Boolean,
     val numa_node: Option[Int],
     command_timings0: List[Properties.T])
@@ -368,11 +368,11 @@
                     override def echo_document(path: Path): Unit =
                       progress.echo_document(path)
                   }
-                Present.build_documents(session_name, deps, store, verbose = verbose,
+                Presentation.build_documents(session_name, deps, store, verbose = verbose,
                   verbose_latex = true, progress = document_progress)
               }
               if (presentation.enabled(info)) {
-                val dir = Present.session_html(session_name, deps, store, presentation)
+                val dir = Presentation.session_html(session_name, deps, store, presentation)
                 if (verbose) progress.echo("Browser info at " + dir.absolute)
               }
             }
@@ -482,7 +482,7 @@
   def build(
     options: Options,
     selection: Sessions.Selection = Sessions.Selection.empty,
-    presentation: Present.Context = Present.Context.none,
+    presentation: Presentation.Context = Presentation.Context.none,
     progress: Progress = new Progress,
     check_unknown_files: Boolean = false,
     build_heap: Boolean = false,
@@ -803,9 +803,9 @@
       val dir = presentation.dir(store)
 
       for ((chapter, entries) <- browser_chapters)
-        Present.update_chapter_index(dir, chapter, entries)
+        Presentation.update_chapter_index(dir, chapter, entries)
 
-      if (browser_chapters.nonEmpty) Present.make_global_index(dir)
+      if (browser_chapters.nonEmpty) Presentation.make_global_index(dir)
     }
 
     results
@@ -821,7 +821,7 @@
     var base_sessions: List[String] = Nil
     var select_dirs: List[Path] = Nil
     var numa_shuffling = false
-    var presentation = Present.Context.none
+    var presentation = Presentation.Context.none
     var requirements = false
     var soft_build = false
     var exclude_session_groups: List[String] = Nil
@@ -872,7 +872,7 @@
       "B:" -> (arg => base_sessions = base_sessions ::: List(arg)),
       "D:" -> (arg => select_dirs = select_dirs ::: List(Path.explode(arg))),
       "N" -> (_ => numa_shuffling = true),
-      "P:" -> (arg => presentation = Present.Context.make(arg)),
+      "P:" -> (arg => presentation = Presentation.Context.make(arg)),
       "R" -> (_ => requirements = true),
       "S" -> (_ => soft_build = true),
       "X:" -> (arg => exclude_session_groups = exclude_session_groups ::: List(arg)),
--- a/src/Pure/build-jars	Wed Nov 18 15:47:53 2020 +0100
+++ b/src/Pure/build-jars	Wed Nov 18 15:52:12 2020 +0100
@@ -153,7 +153,7 @@
   src/Pure/Thy/file_format.scala
   src/Pure/Thy/html.scala
   src/Pure/Thy/latex.scala
-  src/Pure/Thy/present.scala
+  src/Pure/Thy/presentation.scala
   src/Pure/Thy/sessions.scala
   src/Pure/Thy/thy_element.scala
   src/Pure/Thy/thy_header.scala
--- a/src/Tools/VSCode/src/preview_panel.scala	Wed Nov 18 15:47:53 2020 +0100
+++ b/src/Tools/VSCode/src/preview_panel.scala	Wed Nov 18 15:52:12 2020 +0100
@@ -30,7 +30,7 @@
               val snapshot = model.snapshot()
               if (snapshot.is_outdated) m
               else {
-                val preview = Present.preview(resources, snapshot)
+                val preview = Presentation.preview(resources, snapshot)
                 channel.write(
                   Protocol.Preview_Response(file, column, preview.title, preview.content))
                 m - file
--- a/src/Tools/jEdit/src/document_model.scala	Wed Nov 18 15:47:53 2020 +0100
+++ b/src/Tools/jEdit/src/document_model.scala	Wed Nov 18 15:52:12 2020 +0100
@@ -320,7 +320,7 @@
         yield {
           val snapshot = model.await_stable_snapshot()
           val preview =
-            Present.preview(PIDE.resources, snapshot, fonts_url = HTML.fonts_dir(fonts_root),
+            Presentation.preview(PIDE.resources, snapshot, fonts_url = HTML.fonts_dir(fonts_root),
               plain_text = query.startsWith(plain_text_prefix))
           HTTP.Response.html(preview.content)
         })