searchandreplace.java

开源的java 编辑器源代码

		}

		boolean _reverse = reverse && fileset instanceof CurrentBufferSet;
		if(_reverse && regexp)
		{
			GUIUtilities.error(comp,"regexp-reverse",null);
			return false;
		}

		try
		{
			view.showWaitCursor();

			SearchMatcher matcher = getSearchMatcher();
			if(matcher == null)
			{
				view.getToolkit().beep();
				return false;
			}

			record(view,"find(view)",false,true);

loop:			for(;;)
			{
				while(path != null)
				{
					Buffer buffer = jEdit.openTemporary(
						view,null,path,false);

					/* this is stupid and misleading.
					 * but 'path' is not used anywhere except
					 * the above line, and if this is done
					 * after the 'continue', then we will
					 * either hang, or be forced to duplicate
					 * it inside the buffer == null, or add
					 * a 'finally' clause. you decide which one's
					 * worse. */
					path = fileset.getNextFile(view,path);

					if(buffer == null)
						continue loop;

					// Wait for the buffer to load
					if(!buffer.isLoaded())
						VFSManager.waitForRequests();

					int start;

					if(view.getBuffer() == buffer && !repeat)
					{
						JEditTextArea textArea = view.getTextArea();
						Selection s = textArea.getSelectionAtOffset(
							textArea.getCaretPosition());
						if(s == null)
							start = textArea.getCaretPosition();
						else if(_reverse)
							start = s.getStart();
						else
							start = s.getEnd();
					}
					else if(_reverse)
						start = buffer.getLength();
					else
						start = 0;

					if(find(view,buffer,start,repeat,_reverse))
						return true;
				}

				if(repeat)
				{
					if(!BeanShell.isScriptRunning())
					{
						view.getStatus().setMessageAndClear(
							jEdit.getProperty("view.status.search-not-found"));

						view.getToolkit().beep();
					}
					return false;
				}

				boolean restart;

				// if auto wrap is on, always restart search.
				// if auto wrap is off, and we're called from
				// a macro, stop search. If we're called
				// interactively, ask the user what to do.
				if(wrap)
				{
					if(!BeanShell.isScriptRunning())
					{
						view.getStatus().setMessageAndClear(
							jEdit.getProperty("view.status.auto-wrap"));
						// beep if beep property set
						if(jEdit.getBooleanProperty("search.beepOnSearchAutoWrap"))
						{
							view.getToolkit().beep();
						}
					}
					restart = true;
				}
				else if(BeanShell.isScriptRunning())
				{
					restart = false;
				}
				else
				{
					Integer[] args = { new Integer(_reverse ? 1 : 0) };
					int result = GUIUtilities.confirm(comp,
						"keepsearching",args,
						JOptionPane.YES_NO_OPTION,
						JOptionPane.QUESTION_MESSAGE);
					restart = (result == JOptionPane.YES_OPTION);
				}

				if(restart)
				{
					// start search from beginning
					path = fileset.getFirstFile(view);
					repeat = true;
				}
				else
					break loop;
			}
		}
		catch(Exception e)
		{
			Log.log(Log.ERROR,SearchAndReplace.class,e);
			Object[] args = { e.toString() };
			GUIUtilities.error(comp,"searcherror",args);
		}
		finally
		{
			view.hideWaitCursor();
		}

		return false;
	} //}}}

	//{{{ find() method
	/**
	 * Finds the next instance of the search string in the specified
	 * buffer.
	 * @param view The view
	 * @param buffer The buffer
	 * @param start Location where to start the search
	 */
	public static boolean find(View view, Buffer buffer, int start)
		throws Exception
	{
		return find(view,buffer,start,false,false);
	} //}}}

	//{{{ find() method
	/**
	 * Finds the next instance of the search string in the specified
	 * buffer.
	 * @param view The view
	 * @param buffer The buffer
	 * @param start Location where to start the search
	 * @param firstTime See {@link SearchMatcher#nextMatch(CharIndexed,
	 * boolean,boolean,boolean,boolean)}.
	 * @since jEdit 4.1pre7
	 */
	public static boolean find(View view, Buffer buffer, int start,
		boolean firstTime, boolean reverse) throws Exception
	{
		SearchMatcher matcher = getSearchMatcher();
		if(matcher == null)
		{
			view.getToolkit().beep();
			return false;
		}

		Segment text = new Segment();
		if(reverse)
			buffer.getText(0,start,text);
		else
			buffer.getText(start,buffer.getLength() - start,text);

		// the start and end flags will be wrong with reverse search enabled,
		// but they are only used by the regexp matcher, which doesn't
		// support reverse search yet.
		//
		// REMIND: fix flags when adding reverse regexp search.
		SearchMatcher.Match match = matcher.nextMatch(new CharIndexedSegment(text,reverse),
			start == 0,true,firstTime,reverse);

		if(match != null)
		{
			jEdit.commitTemporary(buffer);
			view.setBuffer(buffer);
			JEditTextArea textArea = view.getTextArea();

			if(reverse)
			{
				textArea.setSelection(new Selection.Range(
					start - match.end,
					start - match.start));
				// make sure end of match is visible
				textArea.scrollTo(start - match.start,false);
				textArea.moveCaretPosition(start - match.end);
			}
			else
			{
				textArea.setSelection(new Selection.Range(
					start + match.start,
					start + match.end));
				textArea.moveCaretPosition(start + match.end);
				// make sure start of match is visible
				textArea.scrollTo(start + match.start,false);
			}

			return true;
		}
		else
			return false;
	} //}}}

	//{{{ replace() method
	/**
	 * Replaces the current selection with the replacement string.
	 * @param view The view
	 * @return True if the operation was successful, false otherwise
	 */
	public static boolean replace(View view)
	{
		// component that will parent any dialog boxes
		Component comp = SearchDialog.getSearchDialog(view);
		if(comp == null)
			comp = view;

		JEditTextArea textArea = view.getTextArea();

		Buffer buffer = view.getBuffer();
		if(!buffer.isEditable())
			return false;

		boolean smartCaseReplace = getSmartCaseReplace();

		Selection[] selection = textArea.getSelection();
		if(selection.length == 0)
		{
			view.getToolkit().beep();
			return false;
		}

		record(view,"replace(view)",true,false);

		// a little hack for reverse replace and find
		int caret = textArea.getCaretPosition();
		Selection s = textArea.getSelectionAtOffset(caret);
		if(s != null)
			caret = s.getStart();

		try
		{
			buffer.beginCompoundEdit();

			SearchMatcher matcher = getSearchMatcher();
			if(matcher == null)
				return false;

			initReplace();

			int retVal = 0;

			for(int i = 0; i < selection.length; i++)
			{
				s = selection[i];

				retVal += replaceInSelection(view,textArea,
					buffer,matcher,smartCaseReplace,s);
			}

			boolean _reverse = !regexp && reverse && fileset instanceof CurrentBufferSet;
			if(_reverse)
			{
				// so that Replace and Find continues from
				// the right location
				textArea.moveCaretPosition(caret);
			}
			else
			{
				s = textArea.getSelectionAtOffset(
					textArea.getCaretPosition());
				if(s != null)
					textArea.moveCaretPosition(s.getEnd());
			}

			if(retVal == 0)
			{
				view.getToolkit().beep();
				return false;
			}

			return true;
		}
		catch(Exception e)
		{
			Log.log(Log.ERROR,SearchAndReplace.class,e);
			Object[] args = { e.toString() };
			GUIUtilities.error(comp,
				beanshell ? "searcherror-bsh"
				: "searcherror",args);
		}
		finally
		{
			buffer.endCompoundEdit();
		}

		return false;
	} //}}}

	//{{{ replace() method
	/**
	 * Replaces text in the specified range with the replacement string.
	 * @param view The view
	 * @param buffer The buffer
	 * @param start The start offset
	 * @param end The end offset
	 * @return True if the operation was successful, false otherwise
	 */
	public static boolean replace(View view, Buffer buffer, int start, int end)
	{
		if(!buffer.isEditable())
			return false;

		// component that will parent any dialog boxes
		Component comp = SearchDialog.getSearchDialog(view);
		if(comp == null)
			comp = view;

		boolean smartCaseReplace = getSmartCaseReplace();

		try
		{
			buffer.beginCompoundEdit();

			SearchMatcher matcher = getSearchMatcher();
			if(matcher == null)
				return false;

			initReplace();

			int retVal = 0;

			retVal += _replace(view,buffer,matcher,start,end,
				smartCaseReplace);

			if(retVal != 0)
				return true;
		}
		catch(Exception e)
		{
			Log.log(Log.ERROR,SearchAndReplace.class,e);
			Object[] args = { e.toString() };
			GUIUtilities.error(comp,
				beanshell ? "searcherror-bsh"
				: "searcherror",args);
		}
		finally
		{
			buffer.endCompoundEdit();
		}

		return false;
	} //}}}

	//{{{ replaceAll() method
	/**
	 * Replaces all occurances of the search string with the replacement
	 * string.
	 * @param view The view
	 */
	public static boolean replaceAll(View view)
	{
		// component that will parent any dialog boxes
		Component comp = SearchDialog.getSearchDialog(view);
		if(comp == null)
			comp = view;

		int fileCount = 0;
		int occurCount = 0;

		if(fileset.getFileCount(view) == 0)
		{
			GUIUtilities.error(comp,"empty-fileset",null);
			return false;
		}

		record(view,"replaceAll(view)",true,true);

		view.showWaitCursor();

		boolean smartCaseReplace = (replace != null
			&& TextUtilities.getStringCase(replace)
			== TextUtilities.LOWER_CASE);

		try
		{
			SearchMatcher matcher = getSearchMatcher();
			if(matcher == null)
				return false;

			initReplace();

			String path = fileset.getFirstFile(view);
loop:			while(path != null)
			{
				Buffer buffer = jEdit.openTemporary(
					view,null,path,false);

				/* this is stupid and misleading.
				 * but 'path' is not used anywhere except
				 * the above line, and if this is done
				 * after the 'continue', then we will
				 * either hang, or be forced to duplicate
				 * it inside the buffer == null, or add
				 * a 'finally' clause. you decide which one's
				 * worse. */
				path = fileset.getNextFile(view,path);

				if(buffer == null)
					continue loop;

				// Wait for buffer to finish loading
				if(buffer.isPerformingIO())
					VFSManager.waitForRequests();

				if(!buffer.isEditable())
					continue loop;

				// Leave buffer in a consistent state if
				// an error occurs
				int retVal = 0;

				try