src/Pure/Admin/build_log.scala
author wenzelm
Tue Oct 18 13:56:49 2016 +0200 (2016-10-18)
changeset 64299 4f11063c6e55
parent 64298 0f000101652a
child 64300 3073688abbe9
permissions -rw-r--r--
clarified properties;
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/*  Title:      Pure/Admin/build_log.scala
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    Author:     Makarius
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Build log parsing for current and historic formats.
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*/
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package isabelle
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import java.io.{File => JFile}
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import java.time.ZoneId
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import java.time.format.{DateTimeFormatter, DateTimeParseException}
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import java.util.Locale
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import scala.collection.mutable
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import scala.util.matching.Regex
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object Build_Log
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{
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  /** content **/
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  /* properties */
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  object Prop
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  {
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    def lines(name: String, lines: List[String]): Properties.T =
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      if (lines.isEmpty) Nil else List(name -> cat_lines(lines))
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    val build_tags = "build_tags"  // lines
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    val build_args = "build_args"  // lines
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    val build_group_id = "build_group_id"
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    val build_id = "build_id"
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    val build_engine = "build_engine"
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    val build_host = "build_host"
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    val build_start = "build_start"
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    val build_end = "build_end"
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    val isabelle_version = "isabelle_version"
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    val afp_version = "afp_version"
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  }
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  /* settings */
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  object Settings
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  {
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    val build_settings = List("ISABELLE_BUILD_OPTIONS")
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    val ml_settings = List("ML_PLATFORM", "ML_HOME", "ML_SYSTEM", "ML_OPTIONS")
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    val all_settings = build_settings ::: ml_settings
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    type Entry = (String, String)
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    type T = List[Entry]
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    object Entry
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    {
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      def unapply(s: String): Option[Entry] =
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        s.indexOf('=') match {
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          case -1 => None
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          case i =>
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            val a = s.substring(0, i)
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            val b = Library.perhaps_unquote(s.substring(i + 1))
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            Some((a, b))
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        }
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      def apply(a: String, b: String): String = a + "=" + quote(b)
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      def getenv(a: String): String = apply(a, Isabelle_System.getenv(a))
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    }
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    def show(): String =
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      cat_lines(
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        build_settings.map(Entry.getenv(_)) ::: List("") ::: ml_settings.map(Entry.getenv(_)))
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  }
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  /* file names */
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  def log_date(date: Date): String =
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    String.format(Locale.ROOT, "%s.%05d",
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      DateTimeFormatter.ofPattern("yyyy-MM-dd").format(date.rep),
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      new java.lang.Long((date.time - date.midnight.time).ms / 1000))
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  def log_subdir(date: Date): Path =
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    Path.explode("log") + Path.explode(date.rep.getYear.toString)
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  def log_filename(engine: String, date: Date, more: List[String] = Nil): Path =
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    Path.explode((engine :: log_date(date) :: more).mkString("", "_", ".log"))
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  /* log file collections */
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  def is_log(file: JFile): Boolean =
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    List(".log", ".log.gz", ".log.xz").exists(ext => file.getName.endsWith(ext))
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  def isatest_files(dir: Path): List[JFile] =
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    File.find_files(dir.file, file => is_log(file) && file.getName.startsWith("isatest-makeall-"))
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  def afp_test_files(dir: Path): List[JFile] =
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    File.find_files(dir.file, file => is_log(file) && file.getName.startsWith("afp-test-devel-"))
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  /** log file **/
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  def print_date(date: Date): String = Log_File.Date_Format(date)
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  object Log_File
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  {
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    def apply(name: String, lines: List[String]): Log_File =
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      new Log_File(name, lines)
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    def apply(name: String, text: String): Log_File =
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      Log_File(name, Library.trim_split_lines(text))
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    def apply(file: JFile): Log_File =
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    {
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      val name = file.getName
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      val (base_name, text) =
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        Library.try_unsuffix(".gz", name) match {
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          case Some(base_name) => (base_name, File.read_gzip(file))
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          case None =>
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            Library.try_unsuffix(".xz", name) match {
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              case Some(base_name) => (base_name, File.read_xz(file))
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              case None => (name, File.read(file))
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            }
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          }
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      apply(base_name, text)
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    }
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    def apply(path: Path): Log_File = apply(path.file)
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    /* date format */
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    val Date_Format =
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    {
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      val fmts =
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        Date.Formatter.variants(
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          List("EEE MMM d HH:mm:ss O yyyy", "EEE MMM d HH:mm:ss VV yyyy"),
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          List(Locale.ENGLISH, Locale.GERMAN)) :::
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        List(
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          DateTimeFormatter.RFC_1123_DATE_TIME,
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          Date.Formatter.pattern("EEE MMM d HH:mm:ss yyyy").withZone(ZoneId.of("Europe/Berlin")))
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      def tune_timezone(s: String): String =
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        s match {
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          case "CET" | "MET" => "GMT+1"
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          case "CEST" | "MEST" => "GMT+2"
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          case "EST" => "Europe/Berlin"
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          case _ => s
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        }
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      def tune_weekday(s: String): String =
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        s match {
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          case "Die" => "Di"
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          case "Mit" => "Mi"
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          case "Don" => "Do"
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          case "Fre" => "Fr"
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          case "Sam" => "Sa"
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          case "Son" => "So"
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          case _ => s
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        }
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      def tune(s: String): String =
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        Word.implode(
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          Word.explode(s) match {
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            case a :: "M\uFFFDr" :: bs => tune_weekday(a) :: "Mär" :: bs.map(tune_timezone(_))
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            case a :: bs => tune_weekday(a) :: bs.map(tune_timezone(_))
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            case Nil => Nil
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          }
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        )
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      Date.Format.make(fmts, tune)
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    }
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    /* inlined content */
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    def print_props(marker: String, props: Properties.T): String =
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      marker + YXML.string_of_body(XML.Encode.properties(props))
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  }
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  class Log_File private(val name: String, val lines: List[String])
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  {
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    log_file =>
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    override def toString: String = name
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    def text: String = cat_lines(lines)
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    def err(msg: String): Nothing =
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      error("Error in log file " + quote(name) + ": " + msg)
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    /* date format */
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    object Strict_Date
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    {
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      def unapply(s: String): Some[Date] =
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        try { Some(Log_File.Date_Format.parse(s)) }
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        catch { case exn: DateTimeParseException => log_file.err(exn.getMessage) }
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    }
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    /* inlined content */
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    def find[A](f: String => Option[A]): Option[A] =
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      lines.iterator.map(f).find(_.isDefined).map(_.get)
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    def find_line(marker: String): Option[String] =
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      find(Library.try_unprefix(marker, _))
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    def find_match(regex: Regex): Option[String] =
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      lines.iterator.map(regex.unapplySeq(_)).find(res => res.isDefined && res.get.length == 1).
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        map(res => res.get.head)
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    /* settings */
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    def get_setting(a: String): Option[Settings.Entry] =
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      lines.find(_.startsWith(a + "=")) match {
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        case Some(line) => Settings.Entry.unapply(line)
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        case None => None
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      }
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    def get_settings(as: List[String]): Settings.T =
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      for { a <- as; entry <- get_setting(a) } yield entry
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    /* properties (YXML) */
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    val xml_cache = new XML.Cache()
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    def parse_props(text: String): Properties.T =
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      xml_cache.props(XML.Decode.properties(YXML.parse_body(text)))
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    def filter_props(marker: String): List[Properties.T] =
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      for {
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        line <- lines
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        s <- Library.try_unprefix(marker, line)
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        if YXML.detect(s)
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      } yield parse_props(s)
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    def find_props(marker: String): Option[Properties.T] =
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      find_line(marker) match {
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        case Some(text) if YXML.detect(text) => Some(parse_props(text))
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        case _ => None
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      }
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    /* parse various formats */
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    def parse_meta_info(): Meta_Info = Build_Log.parse_meta_info(log_file)
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    def parse_build_info(): Build_Info = Build_Log.parse_build_info(log_file)
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    def parse_session_info(
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        default_name: String = "",
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        command_timings: Boolean = false,
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        ml_statistics: Boolean = false,
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        task_statistics: Boolean = false): Session_Info =
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      Build_Log.parse_session_info(
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        log_file, default_name, command_timings, ml_statistics, task_statistics)
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  }
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  /** meta info **/
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  object Meta_Info
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  {
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    val empty: Meta_Info = Meta_Info(Nil, Nil)
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  }
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  sealed case class Meta_Info(props: Properties.T, settings: List[(String, String)])
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  {
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    def is_empty: Boolean = props.isEmpty && settings.isEmpty
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  }
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  object Isatest
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  {
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    val engine = "isatest"
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    val Start = new Regex("""^------------------- starting test --- (.+) --- (.+)$""")
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    val End = new Regex("""^------------------- test (?:successful|FAILED) --- (.+) --- .*$""")
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    val Isabelle_Version = new Regex("""^Isabelle version: (\S+)$""")
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    val No_AFP_Version = new Regex("""$.""")
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  }
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  object AFP_Test
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  {
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    val engine = "afp-test"
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    val Start = new Regex("""^Start test(?: for .+)? at ([^,]+), (.*)$""")
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    val Start_Old = new Regex("""^Start test(?: for .+)? at ([^,]+)$""")
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    val End = new Regex("""^End test on (.+), .+, elapsed time:.*$""")
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    val Isabelle_Version = new Regex("""^Isabelle version: .* -- hg id (\S+)$""")
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    val AFP_Version = new Regex("""^AFP version: .* -- hg id (\S+)$""")
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    val Bad_Init = new Regex("""^cp:.*: Disc quota exceeded$""")
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  }
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  object Jenkins
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  {
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    val engine = "jenkins"
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    val Start = new Regex("""^Started .*$""")
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    val Start_Date = new Regex("""^Build started at (.+)$""")
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    val No_End = new Regex("""$.""")
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    val Isabelle_Version = new Regex("""^Isabelle id (\S+)$""")
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    val AFP_Version = new Regex("""^AFP id (\S+)$""")
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    val CONFIGURATION = "=== CONFIGURATION ==="
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    val BUILD = "=== BUILD ==="
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    val FINISHED = "Finished: "
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  }
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  private def parse_meta_info(log_file: Log_File): Meta_Info =
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  {
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    def parse(engine: String, host: String, start: Date,
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      End: Regex, Isabelle_Version: Regex, AFP_Version: Regex): Meta_Info =
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    {
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      val build_id =
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      {
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        val prefix = if (host != "") host else if (engine != "") engine else ""
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        (if (prefix == "") "build" else prefix) + ":" + start.time.ms
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      }
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      val build_engine = if (engine == "") Nil else List(Prop.build_engine -> engine)
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      val build_host = if (host == "") Nil else List(Prop.build_host -> host)
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      val start_date = List(Prop.build_start -> start.toString)
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      val end_date =
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        log_file.lines.last match {
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          case End(log_file.Strict_Date(end_date)) =>
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            List(Prop.build_end -> end_date.toString)
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          case _ => Nil
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        }
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      val isabelle_version =
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        log_file.find_match(Isabelle_Version).map(Prop.isabelle_version -> _)
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      val afp_version =
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        log_file.find_match(AFP_Version).map(Prop.afp_version -> _)
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      Meta_Info((Prop.build_id -> build_id) :: build_engine ::: build_host :::
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          start_date ::: end_date ::: isabelle_version.toList ::: afp_version.toList,
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        log_file.get_settings(Settings.all_settings))
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    }
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    log_file.lines match {
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      case line :: _ if line.startsWith(Build_History.META_INFO_MARKER) =>
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        Meta_Info(log_file.find_props(Build_History.META_INFO_MARKER).get,
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          log_file.get_settings(Settings.all_settings))
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      case Isatest.Start(log_file.Strict_Date(start), host) :: _ =>
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        parse(Isatest.engine, host, start, Isatest.End,
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          Isatest.Isabelle_Version, Isatest.No_AFP_Version)
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      case AFP_Test.Start(log_file.Strict_Date(start), host) :: _ =>
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        parse(AFP_Test.engine, host, start, AFP_Test.End,
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          AFP_Test.Isabelle_Version, AFP_Test.AFP_Version)
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      case AFP_Test.Start_Old(log_file.Strict_Date(start)) :: _ =>
wenzelm@64109
   355
        parse(AFP_Test.engine, "", start, AFP_Test.End,
wenzelm@64109
   356
          AFP_Test.Isabelle_Version, AFP_Test.AFP_Version)
wenzelm@64099
   357
wenzelm@64110
   358
      case Jenkins.Start() :: _
wenzelm@64110
   359
      if log_file.lines.contains(Jenkins.CONFIGURATION) ||
wenzelm@64110
   360
         log_file.lines.last.startsWith(Jenkins.FINISHED) =>
wenzelm@64110
   361
        log_file.lines.dropWhile(_ != Jenkins.BUILD) match {
wenzelm@64110
   362
          case Jenkins.BUILD :: _ :: Jenkins.Start_Date(log_file.Strict_Date(start)) :: _ =>
wenzelm@64111
   363
            parse(Jenkins.engine, "", start.to(ZoneId.of("Europe/Berlin")), Jenkins.No_End,
wenzelm@64110
   364
              Jenkins.Isabelle_Version, Jenkins.AFP_Version)
wenzelm@64110
   365
          case _ => Meta_Info.empty
wenzelm@64110
   366
        }
wenzelm@64110
   367
wenzelm@64105
   368
      case line :: _ if line.startsWith("\0") => Meta_Info.empty
wenzelm@64109
   369
      case List(Isatest.End(_)) => Meta_Info.empty
wenzelm@64109
   370
      case _ :: AFP_Test.Bad_Init() :: _ => Meta_Info.empty
wenzelm@64105
   371
      case Nil => Meta_Info.empty
wenzelm@64104
   372
wenzelm@64110
   373
      case _ => log_file.err("cannot detect log file format")
wenzelm@64061
   374
    }
wenzelm@64061
   375
  }
wenzelm@64061
   376
wenzelm@64085
   377
wenzelm@64098
   378
wenzelm@64119
   379
  /** build info: produced by isabelle build or build_history **/
wenzelm@64119
   380
wenzelm@64119
   381
  val ML_STATISTICS_MARKER = "\fML_statistics = "
wenzelm@64119
   382
  val SESSION_NAME = "session_name"
wenzelm@64085
   383
wenzelm@64061
   384
  object Session_Status extends Enumeration
wenzelm@64061
   385
  {
wenzelm@64085
   386
    val EXISTING = Value("existing")
wenzelm@64061
   387
    val FINISHED = Value("finished")
wenzelm@64061
   388
    val FAILED = Value("failed")
wenzelm@64061
   389
    val CANCELLED = Value("cancelled")
wenzelm@64061
   390
  }
wenzelm@64061
   391
wenzelm@64085
   392
  sealed case class Session_Entry(
wenzelm@64085
   393
    chapter: String,
wenzelm@64085
   394
    groups: List[String],
wenzelm@64085
   395
    threads: Option[Int],
wenzelm@64089
   396
    timing: Timing,
wenzelm@64089
   397
    ml_timing: Timing,
wenzelm@64119
   398
    ml_statistics: List[Properties.T],
wenzelm@64120
   399
    heap_size: Option[Long],
wenzelm@64085
   400
    status: Session_Status.Value)
wenzelm@64085
   401
  {
wenzelm@64085
   402
    def finished: Boolean = status == Session_Status.FINISHED
wenzelm@64085
   403
  }
wenzelm@64054
   404
wenzelm@64085
   405
  sealed case class Build_Info(sessions: Map[String, Session_Entry])
wenzelm@64054
   406
  {
wenzelm@64085
   407
    def session(name: String): Session_Entry = sessions(name)
wenzelm@64085
   408
    def get_session(name: String): Option[Session_Entry] = sessions.get(name)
wenzelm@64054
   409
wenzelm@64089
   410
    def get_default[A](name: String, f: Session_Entry => A, x: A): A =
wenzelm@64085
   411
      get_session(name) match {
wenzelm@64089
   412
        case Some(entry) => f(entry)
wenzelm@64089
   413
        case None => x
wenzelm@64085
   414
      }
wenzelm@64085
   415
wenzelm@64119
   416
    def finished_sessions: List[String] = sessions.keySet.iterator.filter(finished(_)).toList
wenzelm@64089
   417
    def finished(name: String): Boolean = get_default(name, _.finished, false)
wenzelm@64089
   418
    def timing(name: String): Timing = get_default(name, _.timing, Timing.zero)
wenzelm@64089
   419
    def ml_timing(name: String): Timing = get_default(name, _.ml_timing, Timing.zero)
wenzelm@64054
   420
  }
wenzelm@64054
   421
wenzelm@64085
   422
  private def parse_build_info(log_file: Log_File): Build_Info =
wenzelm@64085
   423
  {
wenzelm@64085
   424
    object Chapter_Name
wenzelm@64085
   425
    {
wenzelm@64085
   426
      def unapply(s: String): Some[(String, String)] =
wenzelm@64085
   427
        space_explode('/', s) match {
wenzelm@64085
   428
          case List(chapter, name) => Some((chapter, name))
wenzelm@64085
   429
          case _ => Some(("", s))
wenzelm@64085
   430
        }
wenzelm@64085
   431
    }
wenzelm@64054
   432
wenzelm@64085
   433
    val Session_No_Groups = new Regex("""^Session (\S+)$""")
wenzelm@64085
   434
    val Session_Groups = new Regex("""^Session (\S+) \((.*)\)$""")
wenzelm@64085
   435
    val Session_Finished1 =
wenzelm@64085
   436
      new Regex("""^Finished (\S+) \((\d+):(\d+):(\d+) elapsed time, (\d+):(\d+):(\d+) cpu time.*$""")
wenzelm@64085
   437
    val Session_Finished2 =
wenzelm@64085
   438
      new Regex("""^Finished (\S+) \((\d+):(\d+):(\d+) elapsed time.*$""")
wenzelm@64085
   439
    val Session_Timing =
wenzelm@64085
   440
      new Regex("""^Timing (\S+) \((\d) threads, (\d+\.\d+)s elapsed time, (\d+\.\d+)s cpu time, (\d+\.\d+)s GC time.*$""")
wenzelm@64086
   441
    val Session_Started = new Regex("""^(?:Running|Building) (\S+) \.\.\.$""")
wenzelm@64085
   442
    val Session_Failed = new Regex("""^(\S+) FAILED""")
wenzelm@64085
   443
    val Session_Cancelled = new Regex("""^(\S+) CANCELLED""")
wenzelm@64120
   444
    val Heap = new Regex("""^Heap (\S+) \((\d+) bytes\)$""")
wenzelm@64085
   445
wenzelm@64085
   446
    var chapter = Map.empty[String, String]
wenzelm@64085
   447
    var groups = Map.empty[String, List[String]]
wenzelm@64085
   448
    var threads = Map.empty[String, Int]
wenzelm@64054
   449
    var timing = Map.empty[String, Timing]
wenzelm@64085
   450
    var ml_timing = Map.empty[String, Timing]
wenzelm@64086
   451
    var started = Set.empty[String]
wenzelm@64085
   452
    var failed = Set.empty[String]
wenzelm@64085
   453
    var cancelled = Set.empty[String]
wenzelm@64119
   454
    var ml_statistics = Map.empty[String, List[Properties.T]]
wenzelm@64120
   455
    var heap_sizes = Map.empty[String, Long]
wenzelm@64119
   456
wenzelm@64085
   457
    def all_sessions: Set[String] =
wenzelm@64120
   458
      chapter.keySet ++ groups.keySet ++ threads.keySet ++ timing.keySet ++ ml_timing.keySet ++
wenzelm@64120
   459
      failed ++ cancelled ++ started ++ ml_statistics.keySet ++ heap_sizes.keySet
wenzelm@64085
   460
wenzelm@64054
   461
wenzelm@64062
   462
    for (line <- log_file.lines) {
wenzelm@64054
   463
      line match {
wenzelm@64085
   464
        case Session_No_Groups(Chapter_Name(chapt, name)) =>
wenzelm@64085
   465
          chapter += (name -> chapt)
wenzelm@64085
   466
          groups += (name -> Nil)
wenzelm@64119
   467
wenzelm@64085
   468
        case Session_Groups(Chapter_Name(chapt, name), grps) =>
wenzelm@64085
   469
          chapter += (name -> chapt)
wenzelm@64085
   470
          groups += (name -> Word.explode(grps))
wenzelm@64119
   471
wenzelm@64086
   472
        case Session_Started(name) =>
wenzelm@64086
   473
          started += name
wenzelm@64119
   474
wenzelm@64054
   475
        case Session_Finished1(name,
wenzelm@64054
   476
            Value.Int(e1), Value.Int(e2), Value.Int(e3),
wenzelm@64054
   477
            Value.Int(c1), Value.Int(c2), Value.Int(c3)) =>
wenzelm@64054
   478
          val elapsed = Time.hms(e1, e2, e3)
wenzelm@64054
   479
          val cpu = Time.hms(c1, c2, c3)
wenzelm@64085
   480
          timing += (name -> Timing(elapsed, cpu, Time.zero))
wenzelm@64119
   481
wenzelm@64054
   482
        case Session_Finished2(name,
wenzelm@64054
   483
            Value.Int(e1), Value.Int(e2), Value.Int(e3)) =>
wenzelm@64054
   484
          val elapsed = Time.hms(e1, e2, e3)
wenzelm@64085
   485
          timing += (name -> Timing(elapsed, Time.zero, Time.zero))
wenzelm@64119
   486
wenzelm@64054
   487
        case Session_Timing(name,
wenzelm@64054
   488
            Value.Int(t), Value.Double(e), Value.Double(c), Value.Double(g)) =>
wenzelm@64054
   489
          val elapsed = Time.seconds(e)
wenzelm@64054
   490
          val cpu = Time.seconds(c)
wenzelm@64054
   491
          val gc = Time.seconds(g)
wenzelm@64085
   492
          ml_timing += (name -> Timing(elapsed, cpu, gc))
wenzelm@64054
   493
          threads += (name -> t)
wenzelm@64119
   494
wenzelm@64120
   495
        case Heap(name, Value.Long(size)) =>
wenzelm@64120
   496
          heap_sizes += (name -> size)
wenzelm@64120
   497
wenzelm@64119
   498
        case _ if line.startsWith(ML_STATISTICS_MARKER) =>
wenzelm@64119
   499
          val (name, props) =
wenzelm@64119
   500
            Library.try_unprefix(ML_STATISTICS_MARKER, line).map(log_file.parse_props(_)) match {
wenzelm@64119
   501
              case Some((SESSION_NAME, session_name) :: props) => (session_name, props)
wenzelm@64119
   502
              case _ => log_file.err("malformed ML_statistics " + quote(line))
wenzelm@64119
   503
            }
wenzelm@64120
   504
          ml_statistics += (name -> (props :: ml_statistics.getOrElse(name, Nil)))
wenzelm@64119
   505
wenzelm@64054
   506
        case _ =>
wenzelm@64054
   507
      }
wenzelm@64054
   508
    }
wenzelm@64054
   509
wenzelm@64085
   510
    val sessions =
wenzelm@64085
   511
      Map(
wenzelm@64085
   512
        (for (name <- all_sessions.toList) yield {
wenzelm@64085
   513
          val status =
wenzelm@64085
   514
            if (failed(name)) Session_Status.FAILED
wenzelm@64085
   515
            else if (cancelled(name)) Session_Status.CANCELLED
wenzelm@64086
   516
            else if (timing.isDefinedAt(name) || ml_timing.isDefinedAt(name))
wenzelm@64086
   517
              Session_Status.FINISHED
wenzelm@64086
   518
            else if (started(name)) Session_Status.FAILED
wenzelm@64085
   519
            else Session_Status.EXISTING
wenzelm@64085
   520
          val entry =
wenzelm@64085
   521
            Session_Entry(
wenzelm@64085
   522
              chapter.getOrElse(name, ""),
wenzelm@64085
   523
              groups.getOrElse(name, Nil),
wenzelm@64085
   524
              threads.get(name),
wenzelm@64089
   525
              timing.getOrElse(name, Timing.zero),
wenzelm@64089
   526
              ml_timing.getOrElse(name, Timing.zero),
wenzelm@64119
   527
              ml_statistics.getOrElse(name, Nil).reverse,
wenzelm@64120
   528
              heap_sizes.get(name),
wenzelm@64085
   529
              status)
wenzelm@64085
   530
          (name -> entry)
wenzelm@64085
   531
        }):_*)
wenzelm@64085
   532
    Build_Info(sessions)
wenzelm@64054
   533
  }
wenzelm@64099
   534
wenzelm@64099
   535
wenzelm@64099
   536
wenzelm@64099
   537
  /** session info: produced by "isabelle build" **/
wenzelm@64099
   538
wenzelm@64099
   539
  sealed case class Session_Info(
wenzelm@64099
   540
    session_name: String,
wenzelm@64099
   541
    session_timing: Properties.T,
wenzelm@64099
   542
    command_timings: List[Properties.T],
wenzelm@64099
   543
    ml_statistics: List[Properties.T],
wenzelm@64099
   544
    task_statistics: List[Properties.T])
wenzelm@64099
   545
wenzelm@64099
   546
  private def parse_session_info(
wenzelm@64099
   547
    log_file: Log_File,
wenzelm@64099
   548
    default_name: String,
wenzelm@64099
   549
    command_timings: Boolean,
wenzelm@64099
   550
    ml_statistics: Boolean,
wenzelm@64099
   551
    task_statistics: Boolean): Session_Info =
wenzelm@64099
   552
  {
wenzelm@64099
   553
    val xml_cache = new XML.Cache()
wenzelm@64099
   554
wenzelm@64099
   555
    val session_name =
wenzelm@64099
   556
      log_file.find_line("\fSession.name = ") match {
wenzelm@64099
   557
        case None => default_name
wenzelm@64099
   558
        case Some(name) if default_name == "" || default_name == name => name
wenzelm@64099
   559
        case Some(name) => log_file.err("log from different session " + quote(name))
wenzelm@64099
   560
      }
wenzelm@64099
   561
    val session_timing = log_file.find_props("\fTiming = ") getOrElse Nil
wenzelm@64099
   562
    val command_timings_ =
wenzelm@64099
   563
      if (command_timings) log_file.filter_props("\fcommand_timing = ") else Nil
wenzelm@64099
   564
    val ml_statistics_ =
wenzelm@64119
   565
      if (ml_statistics) log_file.filter_props(ML_STATISTICS_MARKER) else Nil
wenzelm@64099
   566
    val task_statistics_ =
wenzelm@64099
   567
      if (task_statistics) log_file.filter_props("\ftask_statistics = ") else Nil
wenzelm@64099
   568
wenzelm@64099
   569
    Session_Info(session_name, session_timing, command_timings_, ml_statistics_, task_statistics_)
wenzelm@64099
   570
  }
wenzelm@64045
   571
}