| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed 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 com.android.tools.idea.rendering; |
| |
| import com.android.annotations.Nullable; |
| import com.android.ide.common.rendering.legacy.ILegacyPullParser; |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| import java.io.InputStream; |
| import java.io.Reader; |
| |
| public abstract class LayoutPullParser implements ILegacyPullParser { |
| protected int myParsingState = START_DOCUMENT; |
| |
| @Override |
| public void setProperty(String name, Object value) throws XmlPullParserException { |
| throw new XmlPullParserException("setProperty() not supported"); |
| } |
| |
| @Nullable |
| @Override |
| public Object getProperty(String name) { |
| return null; |
| } |
| |
| @Override |
| public void setInput(Reader in) throws XmlPullParserException { |
| throw new XmlPullParserException("setInput() not supported"); |
| } |
| |
| @Override |
| public void setInput(InputStream inputStream, String inputEncoding) throws XmlPullParserException { |
| throw new XmlPullParserException("setInput() not supported"); |
| } |
| |
| @Override |
| public void defineEntityReplacementText(String entityName, String replacementText) throws XmlPullParserException { |
| throw new XmlPullParserException("defineEntityReplacementText() not supported"); |
| } |
| |
| @Override |
| public String getNamespacePrefix(int pos) throws XmlPullParserException { |
| throw new XmlPullParserException("getNamespacePrefix() not supported"); |
| } |
| |
| @Override |
| public String getInputEncoding() { |
| return "UTF-8"; |
| } |
| |
| @Override |
| public String getNamespace(String prefix) { |
| throw new RuntimeException("getNamespace() not supported"); |
| } |
| |
| @Override |
| public int getNamespaceCount(int depth) throws XmlPullParserException { |
| throw new XmlPullParserException("getNamespaceCount() not supported"); |
| } |
| |
| @Override |
| public String getNamespaceUri(int pos) throws XmlPullParserException { |
| throw new XmlPullParserException("getNamespaceUri() not supported"); |
| } |
| |
| @Override |
| public int getColumnNumber() { |
| return -1; |
| } |
| |
| @Override |
| public int getLineNumber() { |
| return -1; |
| } |
| |
| @Override |
| public String getAttributeType(int arg0) { |
| return "CDATA"; |
| } |
| |
| @Override |
| public String getText() { |
| return ""; |
| } |
| |
| @Nullable |
| @Override |
| public char[] getTextCharacters(int[] arg0) { |
| return null; |
| } |
| |
| @Override |
| public boolean isAttributeDefault(int arg0) { |
| return false; |
| } |
| |
| @Override |
| public boolean isWhitespace() { |
| return false; |
| } |
| |
| @Override |
| public boolean getFeature(String name) { |
| if (FEATURE_PROCESS_NAMESPACES.equals(name)) { |
| return true; |
| } |
| if (FEATURE_REPORT_NAMESPACE_ATTRIBUTES.equals(name)) { |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public void setFeature(String name, boolean state) throws XmlPullParserException { |
| if (FEATURE_PROCESS_NAMESPACES.equals(name) && state) { |
| return; |
| } |
| if (FEATURE_REPORT_NAMESPACE_ATTRIBUTES.equals(name) && state) { |
| return; |
| } |
| throw new XmlPullParserException("Unsupported feature: " + name); |
| } |
| |
| // --- basic implementation of IXmlPullParser --- |
| |
| @Override |
| public int getEventType() { |
| return myParsingState; |
| } |
| |
| @Override |
| public int next() throws XmlPullParserException { |
| switch (myParsingState) { |
| case END_DOCUMENT: |
| throw new XmlPullParserException("Nothing after the end"); |
| case START_DOCUMENT: |
| onNextFromStartDocument(); |
| break; |
| case START_TAG: |
| onNextFromStartTag(); |
| break; |
| case END_TAG: |
| onNextFromEndTag(); |
| break; |
| case TEXT: |
| // not used |
| break; |
| case CDSECT: |
| // not used |
| break; |
| case ENTITY_REF: |
| // not used |
| break; |
| case IGNORABLE_WHITESPACE: |
| // not used |
| break; |
| case PROCESSING_INSTRUCTION: |
| // not used |
| break; |
| case COMMENT: |
| // not used |
| break; |
| case DOCDECL: |
| // not used |
| break; |
| } |
| |
| return myParsingState; |
| } |
| |
| @Override |
| public int nextTag() throws XmlPullParserException { |
| int eventType = next(); |
| if (eventType != START_TAG && eventType != END_TAG && eventType != END_DOCUMENT) { |
| throw new XmlPullParserException("expected start or end tag: " + XmlPullParser.TYPES[eventType], this, null); |
| } |
| return eventType; |
| } |
| |
| @Override |
| public String nextText() throws XmlPullParserException { |
| if (getEventType() != START_TAG) { |
| throw new XmlPullParserException("parser must be on START_TAG to read next text", this, null); |
| } |
| int eventType = next(); |
| if (eventType == TEXT) { |
| String result = getText(); |
| eventType = next(); |
| if (eventType != END_TAG) { |
| throw new XmlPullParserException("event TEXT it must be immediately followed by END_TAG", this, null); |
| } |
| return result; |
| } |
| else if (eventType == END_TAG) { |
| return ""; |
| } |
| else { |
| throw new XmlPullParserException("parser must be on START_TAG or TEXT to read text", this, null); |
| } |
| } |
| |
| @Override |
| public int nextToken() throws XmlPullParserException { |
| return next(); |
| } |
| |
| @Override |
| public void require(int type, String namespace, String name) throws XmlPullParserException { |
| if (type != getEventType() || (namespace != null && |
| !namespace.equals(getNamespace())) || (name != null && !name.equals(getName()))) { |
| throw new XmlPullParserException("expected " + TYPES[type] + getPositionDescription()); |
| } |
| } |
| |
| protected abstract void onNextFromStartDocument(); |
| protected abstract void onNextFromStartTag(); |
| protected abstract void onNextFromEndTag(); |
| } |