| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.jena.n3; |
| |
| import java.io.* ; |
| |
| import org.apache.jena.JenaRuntime ; |
| import org.apache.jena.shared.JenaException ; |
| |
| /** Simple class that provides output with moving left margin. |
| * Does not cope with tabs or newlines in output strings. |
| */ |
| |
| // Not robust/complete enough for public use |
| public class N3IndentedWriter |
| { |
| String lineSeparator = JenaRuntime.getLineSeparator() ; |
| |
| Writer writer ; |
| int column ; |
| int row ; |
| int currentIndent ; |
| |
| public N3IndentedWriter(Writer w) |
| { |
| writer = w ; |
| column = 0 ; |
| row = 0 ; |
| currentIndent = 0 ; |
| } |
| |
| public Writer getWriter() { return writer ; } |
| |
| public int getRow() { return row ; } |
| public int getCol() { return column ; } |
| public int getIndent() { return currentIndent ; } |
| |
| public void incIndent(int x) { currentIndent += x ; } |
| public void decIndent(int x) { currentIndent -= x ; } |
| public void setIndent(int x) { currentIndent = x ; } |
| |
| public void print(String s) |
| { |
| try { writer.write(s); column += s.length() ; } |
| catch (java.io.IOException ex) { throw new JenaException(ex) ; } |
| } |
| |
| public void println(String s) |
| { |
| try { writer.write(s); println() ; } |
| catch (java.io.IOException ex) { throw new JenaException(ex) ; } |
| } |
| |
| public void println() |
| { |
| try { |
| writer.write(lineSeparator); |
| writer.flush() ; |
| column = 0 ; |
| row++ ; |
| padTo() ; |
| } |
| catch (java.io.IOException ex) { throw new JenaException(ex) ; } |
| } |
| |
| public void padTo() throws IOException |
| { |
| for ( int i = 0 ; i < currentIndent ; i++ ) |
| writer.write(' ') ; |
| column = column + currentIndent ; |
| } |
| |
| public void flush() { try { writer.flush() ; } catch (IOException ioEx) { throw new JenaException(ioEx) ; } } |
| public void close() { try { writer.close() ; } catch (IOException ioEx) { throw new JenaException(ioEx) ; } } |
| |
| } |