Initial Contribution
This commit is contained in:
The Android Open Source Project
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/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.layoutlib.utils;
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import com.android.layoutlib.api.IResourceValue;
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public class ResourceValue implements IResourceValue {
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private final String mType;
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private final String mName;
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private String mValue = null;
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private final boolean mIsFramwork;
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public ResourceValue(String type, String name, boolean isFramwork) {
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mType = type;
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mName = name;
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mIsFramwork = isFramwork;
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}
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public ResourceValue(String type, String name, String value, boolean isFramework) {
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mType = type;
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mName = name;
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mValue = value;
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mIsFramwork = isFramework;
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}
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public String getType() {
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return mType;
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}
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public final String getName() {
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return mName;
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}
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public final String getValue() {
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return mValue;
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}
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public final void setValue(String value) {
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mValue = value;
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}
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public void replaceWith(ResourceValue value) {
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mValue = value.mValue;
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}
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public boolean isFramework() {
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return mIsFramwork;
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}
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}
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@@ -0,0 +1,60 @@
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/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.layoutlib.utils;
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import com.android.layoutlib.api.IResourceValue;
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import com.android.layoutlib.api.IStyleResourceValue;
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import java.util.HashMap;
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public final class StyleResourceValue extends ResourceValue implements IStyleResourceValue {
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private String mParentStyle = null;
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private HashMap<String, IResourceValue> mItems = new HashMap<String, IResourceValue>();
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public StyleResourceValue(String type, String name, boolean isFramework) {
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super(type, name, isFramework);
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}
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public StyleResourceValue(String type, String name, String parentStyle, boolean isFramework) {
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super(type, name, isFramework);
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mParentStyle = parentStyle;
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}
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public String getParentStyle() {
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return mParentStyle;
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}
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public IResourceValue findItem(String name) {
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return mItems.get(name);
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}
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public void addItem(IResourceValue value) {
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mItems.put(value.getName(), value);
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}
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@Override
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public void replaceWith(ResourceValue value) {
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super.replaceWith(value);
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if (value instanceof StyleResourceValue) {
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mItems.clear();
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mItems.putAll(((StyleResourceValue)value).mItems);
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}
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}
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}
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@@ -0,0 +1,225 @@
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/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.layoutlib.utils;
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import org.xml.sax.Attributes;
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import org.xml.sax.SAXException;
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import org.xml.sax.helpers.DefaultHandler;
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/**
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* SAX handler to parser value resource files.
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*/
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public final class ValueResourceParser extends DefaultHandler {
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// TODO: reuse definitions from somewhere else.
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private final static String NODE_RESOURCES = "resources";
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private final static String NODE_ITEM = "item";
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private final static String ATTR_NAME = "name";
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private final static String ATTR_TYPE = "type";
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private final static String ATTR_PARENT = "parent";
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// Resource type definition
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private final static String RES_STYLE = "style";
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private final static String RES_ATTR = "attr";
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private final static String DEFAULT_NS_PREFIX = "android:";
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private final static int DEFAULT_NS_PREFIX_LEN = DEFAULT_NS_PREFIX.length();
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public interface IValueResourceRepository {
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void addResourceValue(String resType, ResourceValue value);
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}
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private boolean inResources = false;
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private int mDepth = 0;
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private StyleResourceValue mCurrentStyle = null;
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private ResourceValue mCurrentValue = null;
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private IValueResourceRepository mRepository;
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private final boolean mIsFramework;
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public ValueResourceParser(IValueResourceRepository repository, boolean isFramework) {
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mRepository = repository;
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mIsFramework = isFramework;
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}
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@Override
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public void endElement(String uri, String localName, String qName) throws SAXException {
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if (mCurrentValue != null) {
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mCurrentValue.setValue(trimXmlWhitespaces(mCurrentValue.getValue()));
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}
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if (inResources && qName.equals(NODE_RESOURCES)) {
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inResources = false;
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} else if (mDepth == 2) {
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mCurrentValue = null;
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mCurrentStyle = null;
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} else if (mDepth == 3) {
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mCurrentValue = null;
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}
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mDepth--;
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super.endElement(uri, localName, qName);
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}
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@Override
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public void startElement(String uri, String localName, String qName, Attributes attributes)
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throws SAXException {
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try {
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mDepth++;
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if (inResources == false && mDepth == 1) {
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if (qName.equals(NODE_RESOURCES)) {
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inResources = true;
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}
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} else if (mDepth == 2 && inResources == true) {
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String type;
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// if the node is <item>, we get the type from the attribute "type"
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if (NODE_ITEM.equals(qName)) {
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type = attributes.getValue(ATTR_TYPE);
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} else {
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// the type is the name of the node.
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type = qName;
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}
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if (type != null) {
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if (RES_ATTR.equals(type) == false) {
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// get the resource name
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String name = attributes.getValue(ATTR_NAME);
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if (name != null) {
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if (RES_STYLE.equals(type)) {
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String parent = attributes.getValue(ATTR_PARENT);
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mCurrentStyle = new StyleResourceValue(type, name, parent, mIsFramework);
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mRepository.addResourceValue(type, mCurrentStyle);
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} else {
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mCurrentValue = new ResourceValue(type, name, mIsFramework);
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mRepository.addResourceValue(type, mCurrentValue);
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}
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}
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}
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}
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} else if (mDepth == 3 && mCurrentStyle != null) {
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// get the resource name
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String name = attributes.getValue(ATTR_NAME);
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if (name != null) {
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// the name can, in some cases, contain a prefix! we remove it.
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if (name.startsWith(DEFAULT_NS_PREFIX)) {
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name = name.substring(DEFAULT_NS_PREFIX_LEN);
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}
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mCurrentValue = new ResourceValue(null, name, mIsFramework);
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mCurrentStyle.addItem(mCurrentValue);
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}
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}
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} finally {
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super.startElement(uri, localName, qName, attributes);
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}
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}
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@Override
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public void characters(char[] ch, int start, int length) throws SAXException {
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if (mCurrentValue != null) {
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String value = mCurrentValue.getValue();
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if (value == null) {
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mCurrentValue.setValue(new String(ch, start, length));
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} else {
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mCurrentValue.setValue(value + new String(ch, start, length));
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}
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}
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}
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public static String trimXmlWhitespaces(String value) {
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if (value == null) {
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return null;
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}
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// look for carriage return and replace all whitespace around it by just 1 space.
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int index;
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while ((index = value.indexOf('\n')) != -1) {
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// look for whitespace on each side
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int left = index - 1;
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while (left >= 0) {
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if (Character.isWhitespace(value.charAt(left))) {
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left--;
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} else {
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break;
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}
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}
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int right = index + 1;
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int count = value.length();
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while (right < count) {
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if (Character.isWhitespace(value.charAt(right))) {
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right++;
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} else {
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break;
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}
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}
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// remove all between left and right (non inclusive) and replace by a single space.
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String leftString = null;
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if (left >= 0) {
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leftString = value.substring(0, left + 1);
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}
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String rightString = null;
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if (right < count) {
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rightString = value.substring(right);
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}
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if (leftString != null) {
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value = leftString;
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if (rightString != null) {
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value += " " + rightString;
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}
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} else {
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value = rightString != null ? rightString : "";
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}
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}
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// now we un-escape the string
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int length = value.length();
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char[] buffer = value.toCharArray();
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for (int i = 0 ; i < length ; i++) {
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if (buffer[i] == '\\') {
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if (buffer[i+1] == 'u') {
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// this is unicode char.
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int unicodeChar = Integer.parseInt(new String(buffer, i+2, 4), 16);
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// put the unicode char at the location of the \
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buffer[i] = (char)unicodeChar;
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// offset the rest of the buffer since we go from 6 to 1 char
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if (i + 6 < buffer.length) {
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System.arraycopy(buffer, i+6, buffer, i+1, length - i - 6);
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}
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length -= 5;
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} else {
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if (buffer[i+1] == 'n') {
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// replace the 'n' char with \n
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buffer[i+1] = '\n';
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}
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// offset the buffer to erase the \
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System.arraycopy(buffer, i+1, buffer, i, length - i - 1);
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length--;
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}
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}
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}
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return new String(buffer, 0, length);
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}
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}
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