tuned signature: use thy_load to adapt to prover/editor specific view on sources;
/* Title: Tools/jEdit/src/jedit_thy_load.scala
Author: Makarius
Primitives for loading theory files, based on jEdit buffer content.
*/
package isabelle.jedit
import isabelle._
import java.io.{File => JFile, IOException}
import javax.swing.text.Segment
import org.gjt.sp.jedit.io.{VFS, FileVFS, VFSFile, VFSManager}
import org.gjt.sp.jedit.MiscUtilities
import org.gjt.sp.jedit.{View, Buffer}
class JEdit_Thy_Load(loaded_theories: Set[String] = Set.empty, base_syntax: Outer_Syntax)
extends Thy_Load(loaded_theories, base_syntax)
{
/* document node names */
def buffer_node_dummy(buffer: Buffer): Option[Document.Node.Name] =
Some(Document.Node.Name(JEdit_Lib.buffer_name(buffer), buffer.getDirectory, buffer.getName))
def buffer_node_name(buffer: Buffer): Option[Document.Node.Name] =
{
val name = JEdit_Lib.buffer_name(buffer)
Thy_Header.thy_name(name).map(theory => Document.Node.Name(name, buffer.getDirectory, theory))
}
/* file-system operations */
override def append(dir: String, source_path: Path): String =
{
val path = source_path.expand
if (path.is_absolute) Isabelle_System.platform_path(path)
else {
val vfs = VFSManager.getVFSForPath(dir)
if (vfs.isInstanceOf[FileVFS])
MiscUtilities.resolveSymlinks(
vfs.constructPath(dir, Isabelle_System.platform_path(path)))
else vfs.constructPath(dir, Isabelle_System.standard_path(path))
}
}
override def with_thy_text[A](name: Document.Node.Name, f: CharSequence => A): A =
{
Swing_Thread.now {
JEdit_Lib.jedit_buffer(name.node) match {
case Some(buffer) =>
JEdit_Lib.buffer_lock(buffer) {
Some(f(buffer.getSegment(0, buffer.getLength)))
}
case None => None
}
} getOrElse {
val file = new JFile(name.node) // FIXME load URL via jEdit VFS (!?)
if (!file.exists || !file.isFile) error("No such file: " + quote(file.toString))
f(File.read(file))
}
}
def check_file(view: View, path: String): Boolean =
{
val vfs = VFSManager.getVFSForPath(path)
val session = vfs.createVFSSession(path, view)
try {
session != null && {
try {
val file = vfs._getFile(session, path, view)
file != null && file.isReadable && file.getType == VFSFile.FILE
}
catch { case _: IOException => false }
}
}
finally {
try { vfs._endVFSSession(session, view) }
catch { case _: IOException => }
}
}
}