1/* Title: Tools/jEdit/src/jedit_resources.scala 2 Author: Makarius 3 4Resources for theories and auxiliary files, based on jEdit buffer 5content and virtual file-systems. 6*/ 7 8package isabelle.jedit 9 10 11import isabelle._ 12 13import java.io.{File => JFile, ByteArrayOutputStream} 14import javax.swing.text.Segment 15 16import scala.util.parsing.input.Reader 17 18import org.gjt.sp.jedit.io.{VFS, FileVFS, VFSManager} 19import org.gjt.sp.jedit.MiscUtilities 20import org.gjt.sp.jedit.{jEdit, View, Buffer} 21import org.gjt.sp.jedit.bufferio.BufferIORequest 22 23 24object JEdit_Resources 25{ 26 def apply(options: Options): JEdit_Resources = 27 new JEdit_Resources(JEdit_Sessions.session_base_info(options)) 28} 29 30class JEdit_Resources private(val session_base_info: Sessions.Base_Info) 31 extends Resources(session_base_info.base.platform_path) 32{ 33 def session_name: String = session_base_info.session 34 def session_errors: List[String] = session_base_info.errors 35 36 37 /* document node name */ 38 39 def known_file(path: String): Option[Document.Node.Name] = 40 JEdit_Lib.check_file(path).flatMap(session_base.known.get_file(_, bootstrap = true)) 41 42 def node_name(path: String): Document.Node.Name = 43 known_file(path) getOrElse { 44 val vfs = VFSManager.getVFSForPath(path) 45 val node = if (vfs.isInstanceOf[FileVFS]) MiscUtilities.resolveSymlinks(path) else path 46 val theory = theory_name(Sessions.DRAFT, Thy_Header.theory_name(node)) 47 if (session_base.loaded_theory(theory)) Document.Node.Name.loaded_theory(theory) 48 else { 49 val master_dir = vfs.getParentOfPath(path) 50 Document.Node.Name(node, master_dir, theory) 51 } 52 } 53 54 def node_name(buffer: Buffer): Document.Node.Name = 55 node_name(JEdit_Lib.buffer_name(buffer)) 56 57 def theory_node_name(buffer: Buffer): Option[Document.Node.Name] = 58 { 59 val name = node_name(buffer) 60 if (name.is_theory) Some(name) else None 61 } 62 63 override def append(dir: String, source_path: Path): String = 64 { 65 val path = source_path.expand 66 if (dir == "" || path.is_absolute) 67 MiscUtilities.resolveSymlinks(File.platform_path(path)) 68 else if (path.is_current) dir 69 else { 70 val vfs = VFSManager.getVFSForPath(dir) 71 if (vfs.isInstanceOf[FileVFS]) 72 MiscUtilities.resolveSymlinks( 73 vfs.constructPath(dir, File.platform_path(path))) 74 else vfs.constructPath(dir, File.standard_path(path)) 75 } 76 } 77 78 79 /* file content */ 80 81 def read_file_content(node_name: Document.Node.Name): Option[String] = 82 { 83 Bibtex.make_theory_content(node_name.theory) orElse { 84 val name = node_name.node 85 try { 86 val text = 87 if (Url.is_wellformed(name)) Url.read(Url(name)) 88 else File.read(new JFile(name)) 89 Some(Symbol.decode(Line.normalize(text))) 90 } 91 catch { case ERROR(_) => None } 92 } 93 } 94 95 def get_file_content(node_name: Document.Node.Name): Option[String] = 96 Document_Model.get(node_name) match { 97 case Some(model: Buffer_Model) => Some(JEdit_Lib.buffer_text(model.buffer)) 98 case Some(model: File_Model) => Some(model.content.text) 99 case None => read_file_content(node_name) 100 } 101 102 override def with_thy_reader[A](name: Document.Node.Name, f: Reader[Char] => A): A = 103 { 104 GUI_Thread.now { 105 Document_Model.get(name) match { 106 case Some(model: Buffer_Model) => 107 JEdit_Lib.buffer_lock(model.buffer) { Some(f(JEdit_Lib.buffer_reader(model.buffer))) } 108 case Some(model: File_Model) => Some(f(Scan.char_reader(model.content.text))) 109 case None => None 110 } 111 } getOrElse { 112 if (Url.is_wellformed(name.node)) f(Scan.byte_reader(Url(name.node))) 113 else { 114 val file = new JFile(name.node) 115 if (file.isFile) f(Scan.byte_reader(file)) 116 else error("No such file: " + quote(file.toString)) 117 } 118 } 119 } 120 121 122 private class File_Content_Output(buffer: Buffer) extends 123 ByteArrayOutputStream(buffer.getLength + 1) 124 { 125 def content(): Bytes = Bytes(this.buf, 0, this.count) 126 } 127 128 private class File_Content(buffer: Buffer) extends 129 BufferIORequest(null, buffer, null, VFSManager.getVFSForPath(buffer.getPath), buffer.getPath) 130 { 131 def _run() { } 132 def content(): Bytes = 133 { 134 val out = new File_Content_Output(buffer) 135 write(buffer, out) 136 out.content() 137 } 138 } 139 140 def make_file_content(buffer: Buffer): Bytes = (new File_Content(buffer)).content() 141 142 143 /* theory text edits */ 144 145 override def commit(change: Session.Change) 146 { 147 if (change.syntax_changed.nonEmpty) 148 GUI_Thread.later { Document_Model.syntax_changed(change.syntax_changed) } 149 if (change.deps_changed || 150 PIDE.options.bool("jedit_auto_resolve") && undefined_blobs(change.version.nodes).nonEmpty) 151 PIDE.plugin.deps_changed() 152 } 153} 154