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/*
* Buffer.java - jEdit buffer
* :tabSize=4:indentSize=4:noTabs=false:
* :folding=explicit:collapseFolds=1:
*
* Copyright (C) 1998, 2005 Slava Pestov
* Portions copyright (C) 1999, 2000 mike dillon
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package org.gjt.sp.jedit;
//{{{ Imports
import java.awt.Component;
import java.io.File;
import java.io.IOException;
import java.net.Socket;
import java.util.*;
import javax.swing.*;
import javax.swing.text.Segment;
import org.gjt.sp.jedit.browser.VFSBrowser;
import org.gjt.sp.jedit.buffer.BufferUndoListener;
import org.gjt.sp.jedit.buffer.FoldHandler;
import org.gjt.sp.jedit.buffer.JEditBuffer;
import org.gjt.sp.jedit.bufferio.BufferAutosaveRequest;
import org.gjt.sp.jedit.bufferio.BufferIORequest;
import org.gjt.sp.jedit.bufferio.MarkersSaveRequest;
import org.gjt.sp.jedit.bufferset.BufferSet;
import org.gjt.sp.jedit.gui.DockableWindowManager;
import org.gjt.sp.jedit.io.FileVFS;
import org.gjt.sp.jedit.io.VFS;
import org.gjt.sp.jedit.io.VFSFile;
import org.gjt.sp.jedit.io.VFSManager;
import org.gjt.sp.jedit.msg.BufferUpdate;
import org.gjt.sp.jedit.msg.PropertiesChanged;
import org.gjt.sp.jedit.syntax.ModeProvider;
import org.gjt.sp.jedit.syntax.ParserRuleSet;
import org.gjt.sp.jedit.syntax.TokenHandler;
import org.gjt.sp.jedit.syntax.TokenMarker;
import org.gjt.sp.jedit.visitors.JEditVisitorAdapter;
import org.gjt.sp.jedit.visitors.SaveCaretInfoVisitor;
import org.gjt.sp.util.AwtRunnableQueue;
import org.gjt.sp.util.IntegerArray;
import org.gjt.sp.util.Log;
import org.gjt.sp.util.StandardUtilities;
import org.gjt.sp.util.ThreadUtilities;
//}}}
/**
* A <code>Buffer</code> represents the contents of an open text
* file as it is maintained in the computer's memory (as opposed to
* how it may be stored on a disk).<p>
*
* In a BeanShell script, you can obtain the current buffer instance from the
* <code>buffer</code> variable.<p>
*
* This class does not have a public constructor.
* Buffers can be opened and closed using methods in the <code>jEdit</code>
* class.<p>
*
* This class is partially thread-safe, however you must pay attention to two
* very important guidelines:
* <ul>
* <li>Operations such as insert() and remove(),
* undo(), change Buffer data in a writeLock(), and must
* be called from the AWT thread.
* <li>When accessing the buffer from another thread, you must
* call readLock() before and readUnLock() after, if you plan on performing
* more than one read, to ensure that the buffer contents are not changed by
* the AWT thread for the duration of the lock. Only methods whose descriptions
* specify thread safety can be invoked from other threads.
* </ul>
*
* @author Slava Pestov
* @version $Id: Buffer.java 25241 2020-04-15 14:34:21Z kpouer $
*/
public class Buffer extends JEditBuffer
{
//{{{ Some constants
/**
* Backed up property.
* @since jEdit 3.2pre2
*/
public static final String BACKED_UP = "Buffer__backedUp";
/**
* Caret info properties.
* @since jEdit 3.2pre1
*/
public static final String CARET = "Buffer__caret";
public static final String CARET_POSITIONED = "Buffer__caretPositioned";
/**
* Stores a List of {@link org.gjt.sp.jedit.textarea.Selection} instances.
*/
public static final String SELECTION = "Buffer__selection";
/**
* This should be a physical line number, so that the scroll
* position is preserved correctly across reloads (which will
* affect virtual line numbers, due to fold being reset)
*/
public static final String SCROLL_VERT = "Buffer__scrollVert";
public static final String SCROLL_HORIZ = "Buffer__scrollHoriz";
/**
* Should jEdit try to set the encoding based on a UTF8, UTF16 or
* XML signature at the beginning of the file?
*/
public static final String ENCODING_AUTODETECT = "encodingAutodetect";
/**
* This property is set to 'true' if the file has a trailing newline.
* @since jEdit 4.0pre1
*/
public static final String TRAILING_EOL = "trailingEOL";
/**
* This property is set to 'true' if the file should be GZipped.
* @since jEdit 4.0pre4
*/
public static final String GZIPPED = "gzipped";
//}}}
//{{{ Input/output methods
//{{{ reload() method
/**
* Reloads the buffer from disk, asking for confirmation if the buffer
* has unsaved changes.
* @param view The view
* @since jEdit 2.7pre2
*/
public void reload(View view)
{
if (getFlag(UNTITLED))
return;
if(isDirty())
{
String[] args = { path };
int result = GUIUtilities.confirm(view,"changedreload",
args,JOptionPane.YES_NO_OPTION,
JOptionPane.WARNING_MESSAGE);
if(result != JOptionPane.YES_OPTION)
return;
}
view.visit(new SaveCaretInfoVisitor());
load(view,true);
} //}}}
//{{{ load() method
/**
* Loads the buffer from disk.
* @param view The view
* @param reload If true, user will not be asked to recover autosave
* file, if any
* @return true if loaded
* @since 2.5pre1
*/
public boolean load(final View view, final boolean reload)
{
if(isPerformingIO())
{
GUIUtilities.error(view,"buffer-multiple-io",null);
return false;
}
setBooleanProperty(BufferIORequest.ERROR_OCCURRED,false);
setLoading(true);
// view text areas temporarily blank out while a buffer is
// being loaded, to indicate to the user that there is no
// data available yet.
if(!getFlag(TEMPORARY))
EditBus.send(new BufferUpdate(this,view,BufferUpdate.LOAD_STARTED));
final boolean loadAutosave;
boolean autosaveUntitled = jEdit.getBooleanProperty("autosaveUntitled");
// for untitled: re-read autosave file if enabled
if(reload || !getFlag(NEW_FILE) || (isUntitled() && autosaveUntitled))
{
if(file != null)
modTime = file.lastModified();
// Only on initial load
if(!reload && autosaveFile != null && autosaveFile.exists())
loadAutosave = recoverAutosave(view);
else
{
if(autosaveFile != null)
autosaveFile.delete();
loadAutosave = false;
}
if(!loadAutosave)
{
VFS vfs = VFSManager.getVFSForPath(path);
if(!checkFileForLoad(view,vfs,path))
{
setLoading(false);
return false;
}
// have to check again since above might set
// NEW_FILE flag
if(reload || !getFlag(NEW_FILE))
{
if(!vfs.load(view,this,path, isUntitled()))
{
setLoading(false);
return false;
}
}
}
}
else
loadAutosave = false;
//{{{ Do some stuff once loading is finished
Runnable runnable = new Runnable()
{
@Override
public void run()
{
String newPath = getStringProperty(
BufferIORequest.NEW_PATH);
Segment seg = (Segment)getProperty(
BufferIORequest.LOAD_DATA);
IntegerArray endOffsets = (IntegerArray)
getProperty(BufferIORequest.END_OFFSETS);
loadText(seg,endOffsets);
unsetProperty(BufferIORequest.LOAD_DATA);
unsetProperty(BufferIORequest.END_OFFSETS);
unsetProperty(BufferIORequest.NEW_PATH);
undoMgr.clear();
undoMgr.setLimit(jEdit.getIntegerProperty(
"buffer.undoCount",100));
// If the buffer is temporary, we don't need to
// call finishLoading() because it sets the FoldHandler
// and reload markers.
if (!getFlag(TEMPORARY))
finishLoading();
setLoading(false);
// if reloading a file, clear dirty flag
if(reload)
setDirty(false);
if(!loadAutosave && newPath != null)
setPath(newPath);
// if loadAutosave is false, we loaded an
// autosave file, so we set 'dirty' to true
// note that we don't use setDirty(),
// because a) that would send an unnecessary
// message, b) it would also set the
// AUTOSAVE_DIRTY flag, which will make
// the autosave thread write out a
// redundant autosave file
if(loadAutosave)
Buffer.super.setDirty(true);
// send some EditBus messages
if(!getFlag(TEMPORARY))
{
fireBufferLoaded();
EditBus.send(new BufferUpdate(Buffer.this,
view,BufferUpdate.LOADED));
//EditBus.send(new BufferUpdate(Buffer.this,
// view,BufferUpdate.MARKERS_CHANGED));
}
}
}; //}}}
if(getFlag(TEMPORARY))
runnable.run();
else
AwtRunnableQueue.INSTANCE.runAfterIoTasks(runnable);
return true;
} //}}}
//{{{ insertFile() method
/**
* Loads a file from disk, and inserts it into this buffer.
* @param view The view
* @param path the path of the file to insert
* @return true if the file was inserted
* @since 4.0pre1
*/
public boolean insertFile(View view, String path)
{
if(isPerformingIO())
{
GUIUtilities.error(view,"buffer-multiple-io",null);
return false;
}
setBooleanProperty(BufferIORequest.ERROR_OCCURRED,false);
path = MiscUtilities.constructPath(this.path,path);
Optional<Buffer> bufferOptional = jEdit.getBufferManager().getBuffer(path);
if(bufferOptional.isPresent())
{
Buffer buffer = bufferOptional.get();
view.getTextArea().setSelectedText(
buffer.getText(0,buffer.getLength()));
return true;
}
VFS vfs = VFSManager.getVFSForPath(path);
// this returns false if initial sanity
// checks (if the file is a directory, etc)
// fail
return vfs.insert(view,this,path);
} //}}}
//{{{ autosave() method
/**
* Autosaves this buffer.
*/
public void autosave()
{
autosave(false);
} //}}}
//{{{ autosave() method
/**
* Autosaves this buffer.
*
* @param force save even if AUTOSAVE_DIRTY not set
* @since jEdit 5.5pre1
*/
public void autosave(boolean force)
{
if(autosaveFile == null || (!getFlag(AUTOSAVE_DIRTY) && !force)
|| !isDirty() || isPerformingIO() ||
!autosaveFile.getParentFile().exists())
return;
// re-set autosave file path, based on the path at the settings
File autosaveFileOriginal = autosaveFile;
setAutosaveFile();
// if autosave path settings changed, delete the old file
if(autosaveFile != null && !autosaveFileOriginal.toString().equals(autosaveFile.toString())) {
autosaveFileOriginal.delete();
}
setFlag(AUTOSAVE_DIRTY,false);
ThreadUtilities.runInBackground(new BufferAutosaveRequest(
null,this,null,VFSManager.getFileVFS(),
autosaveFile.getPath()));
} //}}}
//{{{ saveAs() method
/**
* Prompts the user for a file to save this buffer to.
* @param view The view
* @param rename True if the buffer's path should be changed, false
* if only a copy should be saved to the specified filename
* @return true if the buffer was successfully saved
* @since jEdit 2.6pre5
*/
public boolean saveAs(View view, boolean rename)
{
String fileSavePath = path;
if (jEdit.getBooleanProperty("saveAsUsesFSB"))
{
DockableWindowManager dwm = view.getDockableWindowManager();
Component comp = dwm.getDockable("vfs.browser");
VFSBrowser browser = (VFSBrowser) comp;
if (browser != null)
fileSavePath = browser.getDirectory() + "/";
}
String[] files = GUIUtilities.showVFSFileDialog(view, fileSavePath, VFSBrowser.SAVE_DIALOG,false);
// files[] should have length 1, since the dialog type is
// SAVE_DIALOG
if(files.length == 0)
return false;
boolean saved = save(view, files[0], rename);
if (saved)
setReadOnly(false);
return saved;
} //}}}
//{{{ save() method
/**
* Saves this buffer to the specified path name, or the current path
* name if it's null.
* @param view The view
* @param path The path name to save the buffer to, or null to use
* @return true if the buffer was successfully saved
* the existing path
*/
public boolean save(View view, String path)
{
return save(view,path,true,false);
} //}}}
//{{{ save() method
/**
* Saves this buffer to the specified path name, or the current path
* name if it's null.
* @param view The view
* @param path The path name to save the buffer to, or null to use
* the existing path
* @param rename True if the buffer's path should be changed, false
* if only a copy should be saved to the specified filename
* @return true if the buffer was successfully saved
* @since jEdit 2.6pre5
*/
public boolean save(View view, String path, boolean rename)
{
return save(view,path,rename,false);
} //}}}
//{{{ save() method
/**
* Saves this buffer to the specified path name, or the current path
* name if it's null.
* @param view The view
* @param path The path name to save the buffer to, or null to use
* the existing path
* @param rename True if the buffer's path should be changed, false
* if only a copy should be saved to the specified filename
* @param disableFileStatusCheck Disables file status checking
* regardless of the state of the checkFileStatus property
* @return true if the buffer was successfully saved
*/
public boolean save(final View view, String path, final boolean rename, boolean disableFileStatusCheck)
{
if(isPerformingIO())
{
GUIUtilities.error(view,"buffer-multiple-io",null);
return false;
}
setBooleanProperty(BufferIORequest.ERROR_OCCURRED,false);
if(path == null && getFlag(NEW_FILE))
return saveAs(view,rename);
if(path == null && file != null)
{
long newModTime = file.lastModified();
if((newModTime != modTime) && (getAutoReload() || getAutoReloadDialog()))
{
Object[] args = { this.path };
int result = GUIUtilities.confirm(view,
"filechanged-save",args,
JOptionPane.YES_NO_OPTION,
JOptionPane.WARNING_MESSAGE);
if(result != JOptionPane.YES_OPTION)
return false;
}
}
EditBus.send(new BufferUpdate(this,view,BufferUpdate.SAVING));
setPerformingIO(true);
final String oldPath = this.path;
final String oldSymlinkPath = symlinkPath;
final String newPath = path == null ? this.path : path;
VFS vfs = VFSManager.getVFSForPath(newPath);
if(!checkFileForSave(view,vfs,newPath))
{
setPerformingIO(false);
return false;
}
Object session = vfs.createVFSSession(newPath,view);
if (session == null)
{
setPerformingIO(false);
return false;
}
unsetProperty("overwriteReadonly");
unsetProperty("forbidTwoStageSave");
try
{
VFSFile file = vfs._getFile(session,newPath,view);
if (file != null)
{
boolean vfsRenameCap = (vfs.getCapabilities() & VFS.RENAME_CAP) != 0;
if (!file.isWriteable())
{
Log.log(Log.WARNING, this, "Buffer saving : File " + file + " is readOnly");
if (vfsRenameCap)
{
Log.log(Log.DEBUG, this, "Buffer saving : VFS can rename files");
String savePath = vfs._canonPath(session,newPath,view);
if(!MiscUtilities.isURL(savePath))
savePath = MiscUtilities.resolveSymlinks(savePath);
savePath = vfs.getTwoStageSaveName(savePath);
if (savePath == null)
{
Log.log(Log.DEBUG, this, "Buffer saving : two stage save impossible because path is null");
VFSManager.error(view,
newPath,
"ioerror.save-readonly-twostagefail",
null);
setPerformingIO(false);
return false;
}
else
{
int result = GUIUtilities.confirm(
view, "vfs.overwrite-readonly",
new Object[]{newPath},
JOptionPane.YES_NO_OPTION,
JOptionPane.WARNING_MESSAGE);
if (result == JOptionPane.YES_OPTION)
{
Log.log(Log.WARNING, this, "Buffer saving : two stage save will be used to save buffer");
setBooleanProperty("overwriteReadonly",true);
}
else
{
Log.log(Log.DEBUG,this, "Buffer not saved");
setPerformingIO(false);
return false;
}
}
}
else
{
Log.log(Log.WARNING, this, "Buffer saving : file is readonly and vfs cannot do two stage save");
VFSManager.error(view,
newPath,
"ioerror.write-error-readonly",
null);
setPerformingIO(false);
return false;
}
}
else
{
String savePath = vfs._canonPath(session,newPath,view);
if(!MiscUtilities.isURL(savePath))
savePath = MiscUtilities.resolveSymlinks(savePath);
savePath = vfs.getTwoStageSaveName(savePath);
if (jEdit.getBooleanProperty("twoStageSave") && (!vfsRenameCap || savePath == null))
{
// the file is writeable but the vfs cannot do two stage. We must overwrite
// readonly flag
int result = GUIUtilities.confirm(
view, "vfs.twostageimpossible",
new Object[]{newPath},
JOptionPane.YES_NO_OPTION,
JOptionPane.WARNING_MESSAGE);
if (result == JOptionPane.YES_OPTION)
{
Log.log(Log.WARNING, this, "Buffer saving : two stage save cannot be used");
setBooleanProperty("forbidTwoStageSave",true);
}
else
{
Log.log(Log.DEBUG,this, "Buffer not saved");
setPerformingIO(false);
return false;
}
}
}
}
}
catch(IOException io)
{
VFSManager.error(view,newPath,"ioerror",
new String[] { io.toString() });
setPerformingIO(false);
return false;
}
finally
{
try
{
vfs._endVFSSession(session,view);
}
catch(IOException io)
{
VFSManager.error(view,newPath,"ioerror",
new String[] { io.toString() });
setPerformingIO(false);
return false;
}
}
if(!vfs.save(view,this,newPath))
{
setPerformingIO(false);
return false;
}
// Once save is complete, do a few other things
AwtRunnableQueue.INSTANCE.runAfterIoTasks(() ->
{
setPerformingIO(false);
setProperty("overwriteReadonly",null);
finishSaving(view,oldPath,oldSymlinkPath,
newPath,rename,getBooleanProperty(
BufferIORequest.ERROR_OCCURRED));
updateMarkersFile(view);
});
return true;
} //}}}
//{{{ checkFileStatus() method
public static final int FILE_NOT_CHANGED = 0;
public static final int FILE_CHANGED = 1;
public static final int FILE_DELETED = 2;
/**
* Check if the buffer has changed on disk.
* @param view the View
* @return One of <code>FILE_NOT_CHANGED</code>, <code>FILE_CHANGED</code>, or
* <code>FILE_DELETED</code>.
*
* @since jEdit 4.2pre1
*/
public int checkFileStatus(View view)
{
// - don't do these checks while a save is in progress,
// because for a moment newModTime will be greater than
// oldModTime, due to the multithreading
// - only supported on local file system
// - for untitled, do not check
if(!isPerformingIO() && file != null && !getFlag(NEW_FILE) && !isUntitled())
{
boolean newReadOnly = file.exists() && !file.canWrite();
if(newReadOnly != isFileReadOnly())
{
setFileReadOnly(newReadOnly);
EditBus.send(new BufferUpdate(this,null,
BufferUpdate.DIRTY_CHANGED));
}
long oldModTime = modTime;
long newModTime = file.lastModified();
if(newModTime != oldModTime)
{
modTime = newModTime;
if(!file.exists())
{
setFlag(NEW_FILE,true);
setDirty(true);
return FILE_DELETED;
}
else
{
return FILE_CHANGED;
}
}
}
return FILE_NOT_CHANGED;
} //}}}
//}}}
//{{{ Getters/setter methods for various buffer meta-data
//{{{ getLastModified() method
/**
* @return the last time jEdit modified the file on disk.
* This method is thread-safe.
*/
public long getLastModified()
{
return modTime;
} //}}}
//{{{ setLastModified() method
/**
* Sets the last time jEdit modified the file on disk.
* @param modTime The new modification time
*/
public void setLastModified(long modTime)
{
this.modTime = modTime;
} //}}}
//{{{ getAutoReload() method
/**
* @return the status of the AUTORELOAD flag
* If true, reload changed files automatically
*/
public boolean getAutoReload()
{
return getFlag(AUTORELOAD);
} //}}}
//{{{ setAutoReload() method
/**
* Sets the status of the AUTORELOAD flag
* @param value # If true, reload changed files automatically
*/
public void setAutoReload(boolean value)
{
setFlag(AUTORELOAD, value);
autoreloadOverridden = isAutoreloadPropertyOverriden();
} //}}}
//
// //{{{ getIoTask() method
// public IoTask getIoTask()
// {
// return ioTask;
// } //}}}
//
// //{{{ setIoTask() method
// public void setIoTask(IoTask task)
// {
// assert(ioTask == null || ioTask != null && ioTask.getState() == StateValue.DONE);
// this.ioTask = task;
// } //}}}
//{{{ getAutoReloadDialog() method
/**
* @return the status of the AUTORELOAD_DIALOG flag
* If true, prompt for reloading or notify user
* when the file has changed on disk
*/
public boolean getAutoReloadDialog()
{
return getFlag(AUTORELOAD_DIALOG);
} //}}}
//{{{ setAutoReloadDialog() method
/**
* Sets the status of the AUTORELOAD_DIALOG flag
* @param value # If true, prompt for reloading or notify user
* when the file has changed on disk
*/
public void setAutoReloadDialog(boolean value)
{
setFlag(AUTORELOAD_DIALOG, value);
autoreloadOverridden = isAutoreloadPropertyOverriden();
} //}}}
//{{{ getVFS() method
/**
* Returns the virtual filesystem responsible for loading and
* saving this buffer. This method is thread-safe.
* @return the VFS
*/
public VFS getVFS()
{
return VFSManager.getVFSForPath(path);
} //}}}
//{{{ getAutosaveFile() method
/**
* @return the autosave file for this buffer. This may be null if
* the file is non-local.
*/
public File getAutosaveFile()
{
return autosaveFile;
} //}}}
//{{{ removeAutosaveFile() method
/**
* Remove the autosave file.
* @since jEdit 4.3pre12
*/
public void removeAutosaveFile()
{
if (autosaveFile != null)
{
autosaveFile.delete();
setFlag(AUTOSAVE_DIRTY,true);
}
} //}}}
//{{{ getName() method
/**
* @return the name of this buffer. This method is thread-safe.
*/
public String getName()
{
return name;
} //}}}
//{{{ getPath() method
/**
* @return the path name of this buffer. This method is thread-safe.
*/
public String getPath()
{
return path;
} //}}}
//{{{ getPath() method
/**
* @param shortVersion if true, replaces home path with ~/ on unix
* @return the path
*/
public String getPath(Boolean shortVersion)
{
return shortVersion ? MiscUtilities.abbreviateView(path) : getPath();
} //}}}
//{{{ getSymlinkPath() method
/**
* @return If this file is a symbolic link, returns the link destination.
* Otherwise returns the file's path. This method is thread-safe.
* @since jEdit 4.2pre1
*/
public String getSymlinkPath()
{
return symlinkPath;
} //}}}
//{{{ getDirectory() method
/**
* @return the directory containing this buffer.
* @since jEdit 4.1pre11
*/
public String getDirectory()
{
return directory;
} //}}}
//{{{ isClosed() method
/**
* @return true if this buffer has been closed with
* {@link org.gjt.sp.jedit.jEdit#closeBuffer(View,Buffer)}.
* This method is thread-safe.
*/
public boolean isClosed()
{
return getFlag(CLOSED);
} //}}}
//{{{ isLoaded() method
/**
* @return true if the buffer is loaded. This method is thread-safe.
*/
public boolean isLoaded()
{
return !isLoading();
} //}}}
//{{{ isNewFile() method
/**
* @return whether this buffer lacks a corresponding version on disk.
* This method is thread-safe.
*/
public boolean isNewFile()
{
return getFlag(NEW_FILE);
} //}}}
//{{{ setNewFile() method
/**
* Sets the new file flag.
* @param newFile The new file flag
*/
public void setNewFile(boolean newFile)
{
setFlag(NEW_FILE,newFile);
if(!newFile)
setFlag(UNTITLED,false);
} //}}}
//{{{ isUntitled() method
/**
* @return true if this file is 'untitled'. This method is thread-safe.
*/
public boolean isUntitled()
{
return getFlag(UNTITLED);
} //}}}
//{{{ isTitled() method
/**
* @return true if this file is not'untitled'. This method is thread-safe.
* @since jEdit 5.6pre1
*/
public boolean isTitled()
{
return !isUntitled();
} //}}}
//{{{ setUntitled() method
/**
*
* @param untitled untitled value to set
* @since jEdit 5.5pre1
*/
protected void setUntitled(boolean untitled)
{
setFlag(UNTITLED, untitled);
} //}}}
//{{{ setDirty() method
/**
* Sets the 'dirty' (changed since last save) flag of this buffer.
*/
@Override
public void setDirty(boolean d)
{
boolean old_d = isDirty();
if (d && getLength() == initialLength)
{
// for untitled, do not check if the content existed before
if (jEdit.getBooleanProperty("useMD5forDirtyCalculation") && !isUntitled())
d = !Arrays.equals(calculateHash(), md5hash);
}
super.setDirty(d);
boolean editable = isEditable();
if(d)
{
if(editable)
setFlag(AUTOSAVE_DIRTY,true);
}
else
{
setFlag(AUTOSAVE_DIRTY,false);
if(autosaveFile != null)
autosaveFile.delete();
}
if(d != old_d && editable)
{
EditBus.send(new BufferUpdate(this,null,
BufferUpdate.DIRTY_CHANGED));
}
} //}}}
//{{{ isTemporary() method
/**
* @return if this is a temporary buffer. This method is thread-safe.
* @see jEdit#openTemporary(View,String,String,boolean)
* @see jEdit#commitTemporary(Buffer)
* @since jEdit 2.2pre7
*/
public boolean isTemporary()
{
return getFlag(TEMPORARY);
} //}}}
//{{{ isBackup() method
/**
* @return if this buffer most probably contains backup file
*/
public boolean isBackup()
{
return MiscUtilities.isBackup(MiscUtilities.getFileName(getPath()));
} //}}}
@Override
public boolean isEditable()
{
return super.isEditable() && !isLocked(); // respects "locked" property
}
//{{{ isLocked() method
/**
* @return if this buffer is locked for editing
*/
public boolean isLocked()
{
return getBooleanProperty("locked", false);
}
//}}}
//{{{ setLocked() method
/**
* Changes locked state of the buffer.
* @param locked true to lock, false to unlock
*/
public void setLocked(boolean locked)
{
setBooleanProperty("locked", locked);
propertiesChanged();
}
//}}}
//{{{ toggleLocked() method
/**
* Toggles locked state of the buffer.
* @param view We show a message in the view's status bar
*/
public void toggleLocked(View view)
{
setLocked(!isLocked());
view.getStatus().setMessageAndClear(
jEdit.getProperty("view.status.locked-changed",
new Integer[] { isLocked() ? 1 : 0 }));
EditBus.send(new PropertiesChanged(Buffer.this));
}
//}}}
//{{{ getIcon() method
/**
* @return this buffer's icon.
* @since jEdit 2.6pre6
*/
public Icon getIcon()
{
if(isDirty())
return GUIUtilities.loadIcon("dirty.gif");
else if(isReadOnly() || isLocked())
return GUIUtilities.loadIcon("readonly.gif");
else if(getFlag(NEW_FILE))
return GUIUtilities.loadIcon("new.gif");
else
return GUIUtilities.loadIcon("normal.gif");
} //}}}
//}}}
//{{{ Property methods
//{{{ propertiesChanged() method
/**
* Reloads settings from the properties. This should be called
* after the <code>syntax</code> or <code>folding</code>
* buffer-local properties are changed.
*/
@Override
public void propertiesChanged()
{
super.propertiesChanged();
longLineLimit = jEdit.getIntegerProperty("longLineLimit", 4000);
String largefilemode = getStringProperty("largefilemode");
longBufferMode = "limited".equals(largefilemode) || "nohighlight".equals(largefilemode);
if (!autoreloadOverridden)
{
setAutoReloadDialog(jEdit.getBooleanProperty("autoReloadDialog"));
setAutoReload(jEdit.getBooleanProperty("autoReload"));
}
if (!isTemporary())
EditBus.send(new BufferUpdate(this,null,BufferUpdate.PROPERTIES_CHANGED));
} //}}}
//{{{ getDefaultProperty() method
@Override
public Object getDefaultProperty(String name)
{
Object retVal;
if(mode != null)
{
retVal = mode.getProperty(name);
if(retVal == null)
return null;
setDefaultProperty(name,retVal);
return retVal;
}
// Now try buffer.<property>
String value = jEdit.getProperty("buffer." + name);
if(value == null)
return null;
// Try returning it as an integer first
try
{
retVal = Integer.valueOf(value);
}
catch(NumberFormatException nf)
{
retVal = value;
}
return retVal;
} //}}}
//{{{ toggleWordWrap() method
/**
* Toggles word wrap between the three available modes. This is used
* by the status bar.
* @param view We show a message in the view's status bar
* @since jEdit 4.1pre3
*/
public void toggleWordWrap(View view)
{
String wrap = getStringProperty("wrap");
if(wrap.equals("none"))
{
String largeFileMode = getStringProperty("largefilemode");
if ("limited".equals(largeFileMode) || "nohighlight".equals(largeFileMode))
wrap = "hard";
else
wrap = "soft";
}
else if(wrap.equals("soft"))
wrap = "hard";
else if(wrap.equals("hard"))
wrap = "none";
view.getStatus().setMessageAndClear(jEdit.getProperty(
"view.status.wrap-changed",new String[] {
wrap }));
setProperty("wrap",wrap);
propertiesChanged();
} //}}}
//{{{ toggleAutoIndent() method
/**
* Toggles automatic indentation on and off.
* @param view This view's status bar will display the message
* @since jEdit 5.0
*/
public void toggleAutoIndent(View view)
{
String indent = getStringProperty("autoIndent");
if (indent.equals("none"))
indent = "simple";
else if (indent.equals("simple"))
indent = "full";
else if (indent.equals("full"))
indent = "none";
setProperty("autoIndent", indent);
view.getStatus().setMessageAndClear(
jEdit.getProperty("view.status.autoindent-changed",
new String[] {indent}));
}
//{{{ toggleLineSeparator() method
/**
* Toggles the line separator between the three available settings.
* This is used by the status bar.
* @param view We show a message in the view's status bar
* @since jEdit 4.1pre3
*/
public void toggleLineSeparator(View view)
{
String status = null;
String lineSep = getStringProperty(LINESEP);
if("\n".equals(lineSep))
{
status = "windows";
lineSep = "\r\n";
}
else if("\r\n".equals(lineSep))
{
status = "mac";
lineSep = "\r";
}
else if("\r".equals(lineSep))
{
status = "unix";
lineSep = "\n";
}
view.getStatus().setMessageAndClear(jEdit.getProperty(
"view.status.linesep-changed",new String[] {
jEdit.getProperty("lineSep." + status) }));
setProperty(LINESEP, lineSep);
setDirty(true);
propertiesChanged();
} //}}}
//{{{ getContextSensitiveProperty() method
/**
* Some settings, like comment start and end strings, can
* vary between different parts of a buffer (HTML text and inline
* JavaScript, for example).
* @param offset The offset
* @param name The property name
* @since jEdit 4.0pre3
*/
@Override
public String getContextSensitiveProperty(int offset, String name)
{
Object value = super.getContextSensitiveProperty(offset,name);
if(value == null)
{
ParserRuleSet rules = getRuleSetAtOffset(offset);
value = jEdit.getMode(rules.getModeName())
.getProperty(name);
if(value == null)
value = mode.getProperty(name);
}
if(value == null)
return null;
else
return String.valueOf(value);
} //}}}
//}}}
//}}}
//{{{ Edit modes, syntax highlighting
//{{{ setMode() method
/**
* Sets this buffer's edit mode by calling the accept() method
* of each registered edit mode.
*/
public void setMode()
{
Mode mode = null;
String userMode = getStringProperty("mode");
if(userMode != null)
{
unsetProperty("mode");
mode = ModeProvider.instance.getMode(userMode);
}
if (mode == null)
{
String firstLine = getLineText(0);
mode = ModeProvider.instance.getModeForFile(getVFS().getFilePath(path), null, firstLine);
}
if (mode != null)
{
int largeBufferSize = jEdit.getIntegerProperty("largeBufferSize", 4000000);
if (!getFlag(TEMPORARY) && getLength() > largeBufferSize && largeBufferSize > 0)
{
mode.loadIfNecessary();
boolean contextInsensitive = mode.getBooleanProperty("contextInsensitive");
String largeFileMode = jEdit.getProperty("largefilemode", "ask");
if ("ask".equals(largeFileMode))
{
if (!contextInsensitive)
{
// the context is not insensitive
JTextPane tp = new JTextPane();
tp.setEditable(false);
tp.setText(jEdit.getProperty("largeBufferDialog.message"));
int i = JOptionPane.showOptionDialog(jEdit.getActiveView(),
tp,
jEdit.getProperty("largeBufferDialog.title", new String[]{name}),
JOptionPane.DEFAULT_OPTION,
JOptionPane.WARNING_MESSAGE,
null,
new String[]{
jEdit.getProperty("largeBufferDialog.fullSyntax"),
jEdit.getProperty("largeBufferDialog.contextInsensitive"),
jEdit.getProperty("largeBufferDialog.defaultMode")},
jEdit.getProperty("largeBufferDialog.contextInsensitive"));
switch (i)
{
case 0:
setProperty("largefilemode", "full");
setMode(mode);
return;
case 1:
setProperty("largefilemode", "limited");
setMode(mode, true);
return;
case 2:
setProperty("largefilemode", "nohighlight");
mode = getDefaultMode();
setMode(mode);
return;
}
}
}
else if ("full".equals(largeFileMode))
{
setProperty("largefilemode", "full");
setMode(mode);
}
else if ("limited".equals(largeFileMode))
{
setProperty("largefilemode", "limited");
setMode(mode, true);
}
else if ("nohighlight".equals(largeFileMode))
{
setProperty("largefilemode", "nohighlight");
mode = getDefaultMode();
setMode(mode);
}
}
setMode(mode);
return;
}
Mode defaultMode = getDefaultMode();
if (defaultMode != null)
setMode(defaultMode);
} //}}}
private static Mode getDefaultMode()
{
Mode defaultMode = jEdit.getMode(jEdit.getProperty("buffer.defaultMode"));
if(defaultMode == null)
defaultMode = jEdit.getMode("text");
return defaultMode;
}
//}}}
//{{{ Deprecated methods
//{{{ getFile() method
/**
* @deprecated Do not call this method, use {@link #getPath()}
* instead.
* @return the file
*/
@Deprecated
public File getFile()
{
return file;
} //}}}
//}}}
//{{{ Marker methods
//{{{ getMarkers() method
/**
* @return a vector of markers.
* @since jEdit 3.2pre1
*/
public Vector<Marker> getMarkers()
{
return markers;
} //}}}
//{{{ getMarkerStatusPrompt() method
/**
* @param action some action
* @return the status prompt for the given marker action. Only
* intended to be called from <code>actions.xml</code>.
* @since jEdit 4.2pre2
*/
public String getMarkerStatusPrompt(String action)
{
return jEdit.getProperty("view.status." + action,
new String[] { getMarkerNameString() });
} //}}}
//{{{ getMarkerNameString() method
/**
* @return a string of all set markers, used by the status bar
* (eg, "a b $ % ^").
* @since jEdit 4.2pre2
*/
public String getMarkerNameString()
{
StringBuilder buf = new StringBuilder();
for (Marker marker : markers)
{
if (marker.getShortcut() != '\0')
{
if (buf.length() != 0)
buf.append(' ');
buf.append(marker.getShortcut());
}
}
if(buf.length() == 0)
return jEdit.getProperty("view.status.no-markers");
else
return buf.toString();
} //}}}
//{{{ addOrRemoveMarker() method
/**
* If a marker is set on the line of the position, it is removed. Otherwise
* a new marker with the specified shortcut is added.
* @param pos The position of the marker
* @param shortcut The shortcut ('\0' if none)
* @since jEdit 3.2pre5
*/
public void addOrRemoveMarker(char shortcut, int pos)
{
int line = getLineOfOffset(pos);
if(getMarkerAtLine(line) != null)
removeMarker(line);
else
addMarker(shortcut,pos);
} //}}}
//{{{ addMarker() method
/**
* Adds a marker to this buffer.
* @param pos The position of the marker
* @param shortcut The shortcut ('\0' if none)
* @since jEdit 3.2pre1
*/
public void addMarker(char shortcut, int pos)
{
Marker markerN = new Marker(this,shortcut,pos);
boolean added = false;
// don't sort markers while buffer is being loaded
if(isLoaded())
{
setFlag(MARKERS_CHANGED,true);
markerN.createPosition();
for(int i = 0; i < markers.size(); i++)
{
Marker marker = markers.get(i);
if(shortcut != '\0' && marker.getShortcut() == shortcut)
marker.setShortcut('\0');
if(marker.getPosition() == pos)
{
markers.removeElementAt(i);
i--;
}
}
for(int i = 0; i < markers.size(); i++)
{
Marker marker = markers.get(i);
if(marker.getPosition() > pos)
{
markers.insertElementAt(markerN,i);
added = true;
break;
}
}
}
if(!added)
markers.addElement(markerN);
if(isLoaded() && !getFlag(TEMPORARY))
{
EditBus.send(new BufferUpdate(this,null,
BufferUpdate.MARKERS_CHANGED));
}
} //}}}
//{{{ getMarkerInRange() method
/**
* @return the first marker within the specified range.
* @param start The start offset
* @param end The end offset
* @since jEdit 4.0pre4
*/
public Marker getMarkerInRange(int start, int end)
{
for (Marker marker : markers)
{
int pos = marker.getPosition();
if (pos >= start && pos < end)
return marker;
}
return null;
} //}}}
//{{{ getMarkerAtLine() method
/**
* @return the first marker at the specified line, or <code>null</code>
* if there is none.
* @param line The line number
* @since jEdit 3.2pre2
*/
public Marker getMarkerAtLine(int line)
{
for (Marker marker : markers)
{
if (getLineOfOffset(marker.getPosition()) == line)
return marker;
}
return null;
} //}}}
//{{{ removeMarker() method
/**
* Removes all markers at the specified line.
* @param line The line number
* @since jEdit 3.2pre2
*/
public void removeMarker(int line)
{
for(int i = 0; i < markers.size(); i++)
{
Marker marker = markers.get(i);
if(getLineOfOffset(marker.getPosition()) == line)
{
setFlag(MARKERS_CHANGED,true);
marker.removePosition();
markers.removeElementAt(i);
i--;
}
}
EditBus.send(new BufferUpdate(this,null,
BufferUpdate.MARKERS_CHANGED));
} //}}}
//{{{ removeAllMarkers() method
/**
* Removes all defined markers.
* @since jEdit 2.6pre1
*/
public void removeAllMarkers()
{
setFlag(MARKERS_CHANGED,true);
for (Marker marker : markers)
marker.removePosition();
markers.removeAllElements();
if(isLoaded())
{
EditBus.send(new BufferUpdate(this,null,
BufferUpdate.MARKERS_CHANGED));
}
} //}}}
//{{{ getMarker() method
/**
* @return the marker with the specified shortcut.
* @param shortcut The shortcut
* @since jEdit 3.2pre2
*/
public Marker getMarker(char shortcut)
{
for (Marker marker : markers)
{
if(marker.getShortcut() == shortcut)
return marker;
}
return null;
} //}}}
//{{{ getMarkersPath() method
/**
* Returns the path for this buffer's markers file
* @param vfs The appropriate VFS
* @param path the path of the buffer, it can be different from the field
* when using save-as
* @return the marker path
* @since jEdit 4.3pre10
*/
public static String getMarkersPath(VFS vfs, String path)
{
return vfs.getParentOfPath(path)
+ '.' + vfs.getFileName(path)
+ ".marks";
} //}}}
//{{{ updateMarkersFile() method
/**
* Save the markers file, or delete it when there are mo markers left
* Handling markers is now independent from saving the buffer.
* Changing markers will not set the buffer dirty any longer.
* @param view The current view
* @return true if markers were updated
* @since jEdit 4.3pre7
*/
public boolean updateMarkersFile(View view)
{
if(!markersChanged())
return true;
// adapted from VFS.save
VFS vfs = VFSManager.getVFSForPath(getPath());
if (((vfs.getCapabilities() & VFS.WRITE_CAP) == 0) ||
!vfs.isMarkersFileSupported())
{
VFSManager.error(view, path, "vfs.not-supported.save",
new String[] { "markers file" });
return false;
}
Object session = vfs.createVFSSession(path, view);
if(session == null)
return false;
ThreadUtilities.runInBackground(
new MarkersSaveRequest(
view, this, session, vfs, path));
return true;
} //}}}
//{{{ markersChanged() method
/**
* @return true when markers have changed and the markers file needs
* to be updated
* @since jEdit 4.3pre7
*/
public boolean markersChanged()
{
return getFlag(MARKERS_CHANGED);
} //}}}
//{{{ setMarkersChanged() method
/**
* Sets/unsets the MARKERS_CHANGED flag
* @param changed changed
* @since jEdit 4.3pre7
*/
public void setMarkersChanged(boolean changed)
{
setFlag(MARKERS_CHANGED, changed);
} //}}}
//}}}
//{{{ Miscellaneous methods
//{{{ setWaitSocket() method
/**
* This socket is closed when the buffer is closed.
* @param waitSocket the socket
*/
public void setWaitSocket(Socket waitSocket)
{
this.waitSocket = waitSocket;
} //}}}
//{{{ getNext() method
/**
* @return the next buffer in the list.
*/
public Buffer getNext()
{
return next;
} //}}}
//{{{ getPrev() method
/**
* @return the previous buffer in the list.
*/
public Buffer getPrev()
{
return prev;
} //}}}
//{{{ setPrev() method
public void setPrev(Buffer prev)
{
this.prev = prev;
} //}}}
//{{{ setNext() method
public void setNext(Buffer next)
{
this.next = next;
} //}}}
//{{{ getIndex() method
/**
* @return the position of this buffer in the buffer list.
*/
public int getIndex()
{
int count = 0;
Buffer buffer = prev;
while (true)
{
if(buffer == null)
break;
count++;
buffer = buffer.prev;
}
return count;
} //}}}
//{{{ toString() method
/**
* Returns a string representation of this buffer.
* This simply returns the path name.
*/
@Override
public String toString()
{
return name + " (" + MiscUtilities.abbreviateView(directory) + ')';
} //}}}
//{{{ addBufferUndoListener() method
/**
* Adds a buffer undo listener.
* @param listener The listener
* @since jEdit 4.3pre18
*/
public void addBufferUndoListener(BufferUndoListener listener)
{
undoListeners.add(listener);
} //}}}
//{{{ removeBufferUndoListener() method
/**
* Removes a buffer undo listener.
* @param listener The listener
* @since jEdit 4.3pre18
*/
public void removeBufferUndoListener(BufferUndoListener listener)
{
undoListeners.remove(listener);
} //}}}
//}}}
//{{{ Package-private members
/** The previous buffer in the list. */
Buffer prev;
/** The next buffer in the list. */
Buffer next;
//{{{ Buffer constructor
Buffer(String path, boolean newFile, boolean temp, Map props)
{
this(path, newFile, temp, props, false);
}
//{{{ Buffer constructor
Buffer(String path, boolean newFile, boolean temp, Map props, boolean untitled)
{
super(props);
textTokenMarker = jEdit.getMode("text").getTokenMarker();
markers = new Vector<Marker>();
setFlag(TEMPORARY,temp);
setFlag(UNTITLED,untitled);
// this must be called before any EditBus messages are sent
setPath(path);
setFlag(NEW_FILE,newFile);
setFlag(AUTORELOAD,jEdit.getBooleanProperty("autoReload"));
setFlag(AUTORELOAD_DIALOG,jEdit.getBooleanProperty("autoReloadDialog"));
undoListeners = new Vector<>();
} //}}}
//{{{ commitTemporary() method
void commitTemporary()
{
setFlag(TEMPORARY,false);
finishLoading();
} //}}}
//{{{ close() method
public void close()
{
close(false);
}
//{{{ close() method
/**
* close the buffer
* @param doNotSave when true, we do not want to keep the autosave even for untitled
* e.g.: we closed the buffer by hand
*/
void close(boolean doNotSave)
{
setFlag(CLOSED,true);
boolean autosaveUntitled = jEdit.getBooleanProperty("autosaveUntitled");
if(autosaveFile != null && (doNotSave || !(isUntitled() && autosaveUntitled)))
autosaveFile.delete();
// close az untitled buffer, but need to autosavesave
// except we close it manually and do not want to save
if ( !doNotSave && isUntitled() && autosaveUntitled ) {
autosave();
}
// notify clients with -wait
if(waitSocket != null)
{
try
{
waitSocket.getOutputStream().write('\0');
waitSocket.getOutputStream().flush();
waitSocket.getInputStream().close();
waitSocket.getOutputStream().close();
waitSocket.close();
}
catch(IOException io)
{
//Log.log(Log.ERROR,this,io);
}
}
} //}}}
//}}}
//{{{ Protected members
@Override
protected TokenMarker.LineContext markTokens(Segment seg, TokenMarker.LineContext prevContext,
TokenHandler _tokenHandler)
{
TokenMarker.LineContext context;
if (longBufferMode && longLineLimit != 0 && longLineLimit < seg.length())
{
context = textTokenMarker.markTokens(prevContext, _tokenHandler, seg);
}
else
{
context = tokenMarker.markTokens(prevContext, _tokenHandler, seg);
}
return context;
}
//{{{ fireBeginUndo() method
@Override
protected void fireBeginUndo()
{
for (BufferUndoListener listener: undoListeners)
{
try
{
listener.beginUndo(this);
}
catch(Throwable t)
{
Log.log(Log.ERROR,this,"Exception while sending buffer undo event to "+ listener +" :");
Log.log(Log.ERROR,this,t);
}
}
} //}}}
//{{{ fireEndUndo() method
@Override
protected void fireEndUndo()
{
for (BufferUndoListener listener: undoListeners)
{
try
{
listener.endUndo(this);
}
catch(Throwable t)
{
Log.log(Log.ERROR,this,"Exception while sending buffer undo event to "+ listener +" :");
Log.log(Log.ERROR,this,t);
}
}
} //}}}
//{{{ fireBeginRedo() method
@Override
protected void fireBeginRedo()
{
for (BufferUndoListener listener: undoListeners)
{
try
{
listener.beginRedo(this);
}
catch(Throwable t)
{
Log.log(Log.ERROR,this,"Exception while sending buffer begin redo event to "+ listener +" :");
Log.log(Log.ERROR,this,t);
}
}
} //}}}
//{{{ fireEndRedo() method
@Override
protected void fireEndRedo()
{
for (BufferUndoListener listener: undoListeners)
{
try
{
listener.endRedo(this);
}
catch(Throwable t)
{
Log.log(Log.ERROR,this,"Exception while sending buffer end redo event to "+ listener +" :");
Log.log(Log.ERROR,this,t);
}
}
} //}}}
//}}}
//{{{ Private members
//{{{ Flags
//{{{ setFlag() method
private void setFlag(int flag, boolean value)
{
if(value)
flags |= 1 << flag;
else
flags &= ~(1 << flag);
} //}}}
//{{{ getFlag() method
private boolean getFlag(int flag)
{
int mask = 1 << flag;
return (flags & mask) == mask;
} //}}}
//{{{ getFlag() method
private boolean isAutoreloadPropertyOverriden()
{
return getFlag(AUTORELOAD) != jEdit.getBooleanProperty("autoReload") ||
getFlag(AUTORELOAD_DIALOG) != jEdit.getBooleanProperty("autoReloadDialog");
} //}}}
//{{{ Flag values
private static final int CLOSED = 0;
private static final int NEW_FILE = 3;
private static final int UNTITLED = 4;
private static final int AUTOSAVE_DIRTY = 5;
private static final int AUTORELOAD = 6;
private static final int AUTORELOAD_DIALOG = 7;
private static final int TEMPORARY = 10;
private static final int MARKERS_CHANGED = 12;
//}}}
private int flags;
//}}}
//{{{ Instance variables
/** Indicate if the autoreload property was overridden */
private int longLineLimit;
private final TokenMarker textTokenMarker;
private boolean autoreloadOverridden;
private String path;
private String symlinkPath;
private String name;
private String directory;
private File file;
private File autosaveFile;
private long modTime;
private byte[] md5hash;
private int initialLength;
private boolean longBufferMode;
private final Vector<Marker> markers;
private Socket waitSocket;
private final List<BufferUndoListener> undoListeners;
//
// /** the current ioTask of this buffer */
// private volatile IoTask ioTask;
//}}}
//{{{ setPath() method
private void setPath(final String path)
{
jEdit.visit(new JEditVisitorAdapter()
{
@Override
public void visit(EditPane editPane)
{
editPane.bufferRenamed(Buffer.this.path, path);
}
});
this.path = path;
VFS vfs = VFSManager.getVFSForPath(path);
if((vfs.getCapabilities() & VFS.WRITE_CAP) == 0)
setFileReadOnly(true);
name = vfs.getFileName(path);
directory = vfs.getParentOfPath(path);
if(vfs instanceof FileVFS)
{
file = new File(path);
symlinkPath = MiscUtilities.resolveSymlinks(path);
// if we don't do this, the autosave file won't be
// deleted after a save as
if(autosaveFile != null)
autosaveFile.delete();
setAutosaveFile();
}
else
{
// I wonder if the lack of this broke anything in the
// past?
file = null;
autosaveFile = null;
symlinkPath = path;
}
} //}}}
//{{{ setAutosaveFile() method
/**
* Set the autosave file, based on the autosettings dir.
* @since jEdit 5.5pre1
*/
private void setAutosaveFile()
{
File autosaveDir = MiscUtilities.prepareAutosaveDirectory(symlinkPath);
autosaveFile = new File(autosaveDir,'#' + name + '#');
} //}}}
//{{{ recoverAutosave() method
private boolean recoverAutosave(final View view)
{
if(!autosaveFile.canRead())
return false;
// this method might get called at startup
GUIUtilities.hideSplashScreen();
boolean autosaveUntitled = jEdit.getBooleanProperty("autosaveUntitled");
final Object[] args = { autosaveFile.getPath() };
int result;
// if it was an untitled autosave, recover without question
if (isUntitled() && autosaveUntitled) {
VFSManager.getFileVFS().load(view,this,autosaveFile.getPath(), isUntitled());
return true;
} else {
result = GUIUtilities.confirm(view,"autosave-found",args,
JOptionPane.YES_NO_OPTION,JOptionPane.WARNING_MESSAGE);
}
if(result == JOptionPane.YES_OPTION)
{
VFSManager.getFileVFS().load(view,this,autosaveFile.getPath(), isUntitled());
// show this message when all I/O requests are
// complete
AwtRunnableQueue.INSTANCE.runAfterIoTasks(() -> GUIUtilities.message(view,"autosave-loaded",args));
return true;
}
else
return false;
} //}}}
//{{{ checkFileForLoad() method
private boolean checkFileForLoad(View view, VFS vfs, String path)
{
if((vfs.getCapabilities() & VFS.LOW_LATENCY_CAP) != 0)
{
Object session = vfs.createVFSSession(path, view);
if(session == null)
return false;
try
{
VFSFile file = vfs._getFile(session,path,view);
if(file == null)
{
setNewFile(true);
return true;
}
if(!file.isReadable())
{
VFSManager.error(view,path,"ioerror.no-read",null);
setNewFile(false);
return false;
}
setFileReadOnly(!file.isWriteable());
if(file.getType() != VFSFile.FILE)
{
VFSManager.error(view,path,
"ioerror.open-directory",null);
setNewFile(false);
return false;
}
}
catch(IOException io)
{
VFSManager.error(view,path,"ioerror",
new String[] { io.toString() });
return false;
}
finally
{
try
{
vfs._endVFSSession(session,view);
}
catch(IOException io)
{
VFSManager.error(view,path,"ioerror",
new String[] { io.toString() });
return false;
}
}
}
return true;
} //}}}
//{{{ checkFileForSave() method
private static boolean checkFileForSave(View view, VFS vfs, String path)
{
if((vfs.getCapabilities() & VFS.LOW_LATENCY_CAP) != 0)
{
Object session = vfs.createVFSSession(path,view);
if(session == null)
return false;
try
{
VFSFile file = vfs._getFile(session,path,view);
if(file == null)
return true;
if(file.getType() != VFSFile.FILE)
{
VFSManager.error(view,path,
"ioerror.save-directory",null);
return false;
}
}
catch(IOException io)
{
VFSManager.error(view,path,"ioerror",
new String[] { io.toString() });
return false;
}
finally
{
try
{
vfs._endVFSSession(session,view);
}
catch(IOException io)
{
VFSManager.error(view,path,"ioerror",
new String[] { io.toString() });
return false;
}
}
}
return true;
} //}}}
/** @return an MD5 hash of the contents of the buffer */
private byte[] calculateHash()
{
final byte[] dummy = new byte[1];
if (!jEdit.getBooleanProperty("useMD5forDirtyCalculation"))
return dummy;
return StandardUtilities.md5(getSegment(0, getLength()));
}
/** Update the buffer's members with the current hash and length,
* for later comparison.
*/
private void updateHash()
{
initialLength = getLength();
md5hash = calculateHash();
}
//{{{ finishLoading() method
private void finishLoading()
{
updateHash();
parseBufferLocalProperties();
// AHA!
// this is probably the only way to fix this
FoldHandler oldFoldHandler = getFoldHandler();
setMode();
if(getFoldHandler() == oldFoldHandler)
{
// on a reload, the fold handler doesn't change, but
// we still need to re-collapse folds.
// don't do this on initial fold handler creation
invalidateFoldLevels();
fireFoldHandlerChanged();
}
// Create marker positions
for (Marker marker : markers)
{
marker.removePosition();
int pos = marker.getPosition();
if (pos > getLength())
marker.setPosition(getLength());
else if (pos < 0)
marker.setPosition(0);
marker.createPosition();
}
} //}}}
//{{{ finishSaving() method
private void finishSaving(View view, String oldPath,
String oldSymlinkPath, String path,
boolean rename, boolean error)
{
//{{{ Set the buffer's path
// Caveat: won't work if save() called with a relative path.
// But I don't think anyone calls it like that anyway.
if(!error && !path.equals(oldPath))
{
Optional<Buffer> optionalBuffer = jEdit.getBufferManager().getBuffer(path);
if(rename)
{
/* if we save a file with the same name as one
* that's already open, we presume that we can
* close the existing file, since the user
* would have confirmed the overwrite in the
* 'save as' dialog box anyway */
optionalBuffer
.filter(buffer -> !buffer.getPath().equals(oldPath))
.ifPresent(buffer ->
{
buffer.setDirty(false);
jEdit.closeBuffer(view,buffer);
});
setPath(path);
jEdit.getEditPaneManager().forEach(editPane ->
{
BufferSet bufferSet = editPane.getBufferSet();
if (bufferSet.indexOf(this) != -1)
{
bufferSet.sort();
}
});
}
else
{
/* if we saved over an already open file using
* 'save a copy as', then reload the existing
* buffer */
optionalBuffer
.filter(buffer -> !buffer.getPath().equals(oldPath))
.ifPresent(buffer -> buffer.load(view, true));
}
} //}}}
//{{{ Update this buffer for the new path
if(rename)
{
if(file != null)
modTime = file.lastModified();
if(!error)
{
// we do a write lock so that the
// autosave, which grabs a read lock,
// is not executed between the
// deletion of the autosave file
// and clearing of the dirty flag
try
{
writeLock();
if(autosaveFile != null)
autosaveFile.delete();
setFlag(AUTOSAVE_DIRTY,false);
setFileReadOnly(false);
setFlag(NEW_FILE,false);
setFlag(UNTITLED,false);
super.setDirty(false);
if(jEdit.getBooleanProperty("resetUndoOnSave"))
{
undoMgr.clear();
}
}
finally
{
writeUnlock();
}
parseBufferLocalProperties();
if(!getPath().equals(oldPath))
{
if (!isTemporary())
jEdit.updatePosition(oldSymlinkPath,this);
setMode();
}
else
{
// if user adds mode buffer-local property
String newMode = getStringProperty("mode");
if(newMode != null &&
!newMode.equals(getMode()
.getName()))
setMode();
}
updateHash();
if (!isTemporary())
{
EditBus.send(new BufferUpdate(this,
view,BufferUpdate.DIRTY_CHANGED));
// new message type introduced in 4.0pre4
EditBus.send(new BufferUpdate(this,
view,BufferUpdate.SAVED));
}
}
} //}}}
} //}}}
//}}}
}
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