author | wenzelm |
Mon, 19 Sep 2011 23:34:22 +0200 | |
changeset 45007 | cc86edb97c2c |
parent 44963 | 4662dddc2fd8 |
child 46737 | 09ab89658a5d |
permissions | -rw-r--r-- |
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/* Title: Tools/jEdit/src/jedit_thy_load.scala |
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Author: Makarius |
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Primitives for loading theory files, based on jEdit buffer content. |
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*/ |
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package isabelle.jedit |
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import isabelle._ |
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import java.io.{File, IOException} |
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import javax.swing.text.Segment |
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import org.gjt.sp.jedit.io.{VFS, FileVFS, VFSFile, VFSManager} |
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import org.gjt.sp.jedit.MiscUtilities |
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import org.gjt.sp.jedit.View |
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class JEdit_Thy_Load extends Thy_Load |
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{ |
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override def append(dir: String, source_path: Path): String = |
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{ |
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val path = source_path.expand |
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if (path.is_absolute) Isabelle_System.platform_path(path) |
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else { |
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val vfs = VFSManager.getVFSForPath(dir) |
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if (vfs.isInstanceOf[FileVFS]) |
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MiscUtilities.resolveSymlinks( |
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vfs.constructPath(dir, Isabelle_System.platform_path(path))) |
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else vfs.constructPath(dir, Isabelle_System.standard_path(path)) |
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} |
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} |
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def check_file(view: View, path: String): Boolean = |
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{ |
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val vfs = VFSManager.getVFSForPath(path) |
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val session = vfs.createVFSSession(path, view) |
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try { |
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session != null && { |
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try { |
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val file = vfs._getFile(session, path, view) |
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file != null && file.isReadable && file.getType == VFSFile.FILE |
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} |
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catch { case _: IOException => false } |
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} |
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} |
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finally { |
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try { vfs._endVFSSession(session, view) } |
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catch { case _: IOException => } |
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} |
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} |
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override def check_thy(name: Document.Node.Name): Thy_Header = |
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{ |
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Swing_Thread.now { |
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Isabelle.jedit_buffer(name.node) match { |
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case Some(buffer) => |
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Isabelle.buffer_lock(buffer) { |
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val text = new Segment |
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buffer.getText(0, buffer.getLength, text) |
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Some(Thy_Header.read(text)) |
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} |
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case None => None |
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} |
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} getOrElse { |
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val file = new File(name.node) // FIXME load URL via jEdit VFS (!?) |
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if (!file.exists || !file.isFile) error("No such file: " + quote(file.toString)) |
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Thy_Header.read(file) |
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} |
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} |
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} |
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