| /* |
| * 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.jackrabbit.oak.exporter; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.Set; |
| |
| import com.google.common.base.Strings; |
| import com.google.common.collect.ImmutableSet; |
| import org.apache.jackrabbit.oak.commons.json.JsopBuilder; |
| import org.apache.jackrabbit.oak.commons.json.JsopWriter; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static com.google.common.base.Preconditions.checkState; |
| |
| /** |
| * Writes nodes in CND format |
| * |
| * <pre> |
| * + projects |
| * - jcr:primaryType = "sling:OrderedFolder" |
| * - jcr:mixinTypes = ["rep:AccessControllable"] |
| * - jcr:createdBy = "admin" |
| * - jcr:created = "2017-01-26T08:02:08.602+05:30" |
| * - sling:resourceType = "sling/projects" |
| * + rep:policy |
| * - jcr:primaryType = "rep:ACL" |
| * </pre> |
| */ |
| class CNDStreamWriter implements JsopWriter, Closeable { |
| private static final Set<String> COMMON_TYPE_CODES = ImmutableSet.of("nam:", "dat:"); |
| private enum State {NONE, STARTED, BEGIN, END} |
| private final PrintWriter w; |
| private State arrayState = State.NONE; |
| private int depth = 0; |
| private String deferredName; |
| private String indent = " "; |
| |
| public CNDStreamWriter(PrintWriter w) { |
| this.w = w; |
| } |
| |
| @Override |
| public JsopWriter object() { |
| if (deferredName != null) { |
| w.println(); |
| space(); |
| w.print('+'); |
| w.print(' '); |
| w.print(deferredName); |
| deferredName = null; |
| } |
| depth++; |
| return this; |
| } |
| |
| @Override |
| public JsopWriter endObject() { |
| optionalResetArrayState(); |
| depth--; |
| return this; |
| } |
| |
| @Override |
| public JsopWriter array() { |
| checkState(arrayState == State.NONE); |
| optionalKey(); |
| arrayState = State.BEGIN; |
| w.append('['); |
| return this; |
| } |
| |
| @Override |
| public JsopWriter endArray() { |
| checkState(arrayState == State.BEGIN || arrayState == State.STARTED); |
| arrayState = State.END; |
| w.append(']'); |
| return this; |
| } |
| |
| |
| @Override |
| public JsopWriter key(String key) { |
| optionalResetArrayState(); |
| deferredName = key; |
| return this; |
| } |
| |
| @Override |
| public JsopWriter encodedValue(String raw) { |
| optionalKey(); |
| optionalComma(); |
| w.print(raw); |
| optionalChangeArrayState(); |
| return this; |
| } |
| |
| @Override |
| public JsopWriter value(String value) { |
| return encodedValue(JsopBuilder.encode(stripTypeCode(value))); |
| } |
| |
| @Override |
| public JsopWriter value(long x) { |
| return encodedValue(String.valueOf(x)); |
| } |
| |
| @Override |
| public JsopWriter value(boolean b) { |
| return encodedValue(String.valueOf(b)); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| checkState(depth == 0); |
| } |
| |
| private void optionalComma() { |
| if (arrayState == State.STARTED) { |
| w.print(','); |
| } |
| } |
| |
| private void optionalChangeArrayState() { |
| if (arrayState == State.BEGIN) { |
| arrayState = State.STARTED; |
| } |
| } |
| |
| private void optionalKey() { |
| if (arrayState == State.BEGIN || arrayState == State.STARTED) { |
| return; |
| } |
| checkNotNull(deferredName); |
| w.println(); |
| space(); |
| w.print('-'); |
| w.print(' '); |
| w.print(deferredName); |
| w.print(" = "); |
| deferredName = null; |
| } |
| |
| private void space() { |
| w.print(Strings.repeat(indent, depth)); |
| } |
| |
| private void optionalResetArrayState() { |
| //Check that not within array |
| checkState(arrayState == State.END || arrayState == State.NONE); |
| if (arrayState == State.END) { |
| arrayState = State.NONE; |
| } |
| } |
| |
| private static String stripTypeCode(String value) { |
| if (value != null) { |
| for (String code : COMMON_TYPE_CODES){ |
| if (value.startsWith(code)){ |
| return value.substring(code.length()); |
| } |
| } |
| } |
| return value; |
| } |
| |
| //Unsupported operation. These are also not used by JsonSerializer |
| |
| @Override |
| public JsopWriter tag(char tag) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public JsopWriter append(JsopWriter diff) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public JsopWriter newline() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void resetWriter() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void setLineLength(int length) { |
| throw new UnsupportedOperationException(); |
| } |
| } |