src/Pure/Admin/build_easychair.scala

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Pure/Admin/build_easychair.scala	Mon Oct 31 17:10:13 2022 +0100
@@ -0,0 +1,108 @@
+/*  Title:      Pure/Admin/build_easychair.scala
+    Author:     Makarius
+
+Build Isabelle component for Easychair style.
+
+See also: https://easychair.org/publications/for_authors
+*/
+
+package isabelle
+
+
+object Build_Easychair {
+  /* build easychair component */
+
+  val default_url = "https://easychair.org/publications/easychair.zip"
+
+  def build_easychair(
+    download_url: String = default_url,
+    target_dir: Path = Path.current,
+    progress: Progress = new Progress
+  ): Unit = {
+    Isabelle_System.require_command("unzip", test = "-h")
+
+    Isabelle_System.with_tmp_file("download", ext = "zip") { download_file =>
+      Isabelle_System.with_tmp_dir("download") { download_dir =>
+
+        /* download */
+
+        Isabelle_System.download_file(download_url, download_file, progress = progress)
+        Isabelle_System.bash("unzip -x " + File.bash_path(download_file),
+          cwd = download_dir.file).check
+
+        val easychair_dir =
+          File.read_dir(download_dir) match {
+            case List(name) => download_dir + Path.explode(name)
+            case bad =>
+              error("Expected exactly one directory entry in " + download_file +
+                bad.mkString("\n", "\n  ", ""))
+          }
+
+
+        /* component */
+
+        val version =
+          Library.try_unprefix("EasyChair", easychair_dir.file_name)
+            .getOrElse("Failed to detect version from " + quote(easychair_dir.file_name))
+
+        val component = "easychair-" + version
+        val component_dir = Isabelle_System.new_directory(target_dir + Path.basic(component))
+        progress.echo("Component " + component_dir)
+
+        component_dir.file.delete
+        Isabelle_System.copy_dir(easychair_dir, component_dir)
+
+
+        /* settings */
+
+        val etc_dir = Isabelle_System.make_directory(component_dir + Path.basic("etc"))
+        File.write(etc_dir + Path.basic("settings"),
+          """# -*- shell-script -*- :mode=shellscript:
+
+ISABELLE_EASYCHAIR_HOME="$COMPONENT"
+""")
+
+
+        /* README */
+
+        File.write(component_dir + Path.basic("README"),
+          """This is the Easychair style for authors from
+""" + download_url + """
+
+
+    Makarius
+    """ + Date.Format.date(Date.now()) + "\n")
+      }
+    }
+  }
+
+
+  /* Isabelle tool wrapper */
+
+  val isabelle_tool =
+    Isabelle_Tool("build_easychair", "build component for Easychair style",
+      Scala_Project.here,
+      { args =>
+        var target_dir = Path.current
+        var download_url = default_url
+
+        val getopts = Getopts("""
+Usage: isabelle build_easychair [OPTIONS]
+
+  Options are:
+    -D DIR       target directory (default ".")
+    -U URL       download URL (default: """" + default_url + """")
+
+  Build component for Easychair style.
+""",
+          "D:" -> (arg => target_dir = Path.explode(arg)),
+          "U:" -> (arg => download_url = arg))
+
+        val more_args = getopts(args)
+        if (more_args.nonEmpty) getopts.usage()
+
+        val progress = new Console_Progress()
+
+        build_easychair(download_url = download_url, target_dir = target_dir, progress = progress)
+      })
+}