[
https://issues.apache.org/jira/browse/MNG-7820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17760893#comment-17760893
]
ASF GitHub Bot commented on MNG-7820:
-------------------------------------
elharo commented on code in PR #1208:
URL: https://github.com/apache/maven/pull/1208#discussion_r1311520008
##########
maven-core/src/main/java/org/apache/maven/utils/dag/DAG.java:
##########
@@ -0,0 +1,240 @@
+/*
+ * 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.maven.utils.dag;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * DAG = Directed Acyclic Graph
+ *
+ * @author <a href="michal.mac...@dimatics.com">Michal Maczka</a>
+ *
+ * TODO this class should be renamed from DAG to Dag
Review Comment:
Now is the time to do this
##########
maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuilder.java:
##########
@@ -103,6 +102,10 @@ public class DefaultProjectBuilder implements
ProjectBuilder {
private final RootLocator rootLocator;
+ public static final String OS_NAME =
System.getProperty("os.name").toLowerCase(Locale.US);
Review Comment:
private
##########
maven-model-builder/src/main/java/org/apache/maven/utils/Os.java:
##########
@@ -0,0 +1,383 @@
+/*
Review Comment:
This can't be copied over as is. It needs to be cleaned up and rethought.
It's horribly out of date.
##########
maven-core/src/main/java/org/apache/maven/utils/dag/CycleDetectedException.java:
##########
@@ -0,0 +1,40 @@
+/*
+ * 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.maven.utils.dag;
Review Comment:
This DAG stuff should probably be a separate PR from random StringUtils and
IO fixes.
##########
maven-model/src/main/java/org/apache/maven/model/io/xpp3/MavenXpp3ReaderEx.java:
##########
@@ -112,13 +119,13 @@ public Model read(InputStream in, InputSource source)
throws IOException, XmlPul
*
* @param parser a parser object.
* @param strict a strict object.
- * @throws IOException IOException if any.
- * @throws XmlPullParserException XmlPullParserException if
- * any.
* @return Model
+ * @throws IOException IOException if any.
Review Comment:
no period, and in general "if any" is not sufficient description. Something
like "if an I/O error occurs while reading from the underlying source"
##########
maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuilder.java:
##########
@@ -103,6 +102,10 @@ public class DefaultProjectBuilder implements
ProjectBuilder {
private final RootLocator rootLocator;
+ public static final String OS_NAME =
System.getProperty("os.name").toLowerCase(Locale.US);
+
+ public static final String FAMILY_WINDOWS = "windows";
Review Comment:
private
In general, avoid introducing new public API
##########
maven-core/src/main/java/org/apache/maven/properties/internal/EnvironmentUtils.java:
##########
@@ -36,6 +34,10 @@ public class EnvironmentUtils {
private static Properties envVars;
+ public static final String OS_NAME =
System.getProperty("os.name").toLowerCase(Locale.US);
Review Comment:
private
##########
maven-core/src/main/java/org/apache/maven/utils/introspection/ReflectionValueExtractor.java:
##########
@@ -0,0 +1,325 @@
+/*
+ * 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.maven.utils.introspection;
+
+import java.lang.ref.WeakReference;
+import java.lang.reflect.Array;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.List;
+import java.util.Map;
+import java.util.WeakHashMap;
+
+/**
+ * <p>
+ * Using simple dotted expressions to extract the values from an Object
instance, For example we might want to extract a
+ * value like: <code>project.build.sourceDirectory</code>
+ * </p>
+ * <p>
+ * The implementation supports indexed, nested and mapped properties similar
to the JSP way.
+ * </p>
+ *
+ * @author <a href="mailto:ja...@maven.org";>Jason van Zyl </a>
+ * @author <a href="mailto:vincent.sive...@gmail.com";>Vincent Siveton</a>
+ *
+ * @see <a href=
+ *
"http://struts.apache.org/1.x/struts-taglib/indexedprops.html";>http://struts.apache.org/1.x/struts-taglib/indexedprops.html</a>
+ */
+public class ReflectionValueExtractor {
+ private static final Class<?>[] CLASS_ARGS = new Class[0];
+
+ private static final Object[] OBJECT_ARGS = new Object[0];
+
+ /**
+ * Use a WeakHashMap here, so the keys (Class objects) can be garbage
collected. This approach prevents permgen
+ * space overflows due to retention of discarded classloaders.
+ */
+ private static final Map<Class<?>, WeakReference<ClassMap>> CLASS_MAPS =
new WeakHashMap<>();
+
+ static final int EOF = -1;
+
+ static final char PROPERTY_START = '.';
+
+ static final char INDEXED_START = '[';
+
+ static final char INDEXED_END = ']';
+
+ static final char MAPPED_START = '(';
+
+ static final char MAPPED_END = ')';
+
+ static class Tokenizer {
+ final String expression;
+
+ int idx;
+
+ Tokenizer(String expression) {
+ this.expression = expression;
+ }
+
+ public int peekChar() {
+ return idx < expression.length() ? expression.charAt(idx) : EOF;
+ }
+
+ public int skipChar() {
+ return idx < expression.length() ? expression.charAt(idx++) : EOF;
+ }
+
+ public String nextToken(char delimiter) {
+ int start = idx;
+
+ while (idx < expression.length() && delimiter !=
expression.charAt(idx)) {
+ idx++;
+ }
+
+ // delimiter MUST be present
+ if (idx <= start || idx >= expression.length()) {
+ return null;
+ }
+
+ return expression.substring(start, idx++);
+ }
+
+ public String nextPropertyName() {
+ final int start = idx;
+
+ while (idx < expression.length() &&
Character.isJavaIdentifierPart(expression.charAt(idx))) {
+ idx++;
+ }
+
+ // property name does not require delimiter
+ if (idx <= start || idx > expression.length()) {
+ return null;
+ }
+
+ return expression.substring(start, idx);
+ }
+
+ public int getPosition() {
+ return idx < expression.length() ? idx : EOF;
+ }
+
+ // to make tokenizer look pretty in debugger
+ @Override
+ public String toString() {
+ return idx < expression.length() ? expression.substring(idx) :
"<EOF>";
+ }
+ }
+
+ private ReflectionValueExtractor() {}
+
+ /**
+ * <p>The implementation supports indexed, nested and mapped
properties.</p>
+ *
+ * <ul>
+ * <li>nested properties should be defined by a dot, i.e.
"user.address.street"</li>
+ * <li>indexed properties (java.util.List or array instance) should be
contains <code>(\\w+)\\[(\\d+)\\]</code>
+ * pattern, i.e. "user.addresses[1].street"</li>
+ * <li>mapped properties should be contains <code>(\\w+)\\((.+)\\)</code>
pattern, i.e.
+ * "user.addresses(myAddress).street"</li>
+ * </ul>
+ *
+ * @param expression not null expression
+ * @param root not null object
+ * @return the object defined by the expression
+ * @throws Exception if any
+ */
+ public static Object evaluate(String expression, Object root) throws
Exception {
+ return evaluate(expression, root, true);
+ }
+
+ /**
+ * <p>The implementation supports indexed, nested and mapped
properties.</p>
+ *
+ * <ul>
+ * <li>nested properties should be defined by a dot, i.e.
"user.address.street"</li>
+ * <li>indexed properties (java.util.List or array instance) should be
contains <code>(\\w+)\\[(\\d+)\\]</code>
+ * pattern, i.e. "user.addresses[1].street"</li>
+ * <li>mapped properties should be contains <code>(\\w+)\\((.+)\\)</code>
pattern, i.e.
+ * "user.addresses(myAddress).street"</li>
+ * </ul>
+ *
+ * @param expression not null expression
+ * @param root not null object
+ * @param trimRootToken root start
+ * @return the object defined by the expression
+ * @throws Exception if any
+ */
+ // TODO: don't throw Exception
+ public static Object evaluate(String expression, final Object root, final
boolean trimRootToken) throws Exception {
+ Object value = root;
+
+ //
----------------------------------------------------------------------
+ // Walk the dots and retrieve the ultimate value desired from the
+ // MavenProject instance.
+ //
----------------------------------------------------------------------
+
+ if (expression == null || expression.isEmpty() ||
!Character.isJavaIdentifierStart(expression.charAt(0))) {
+ return null;
+ }
+
+ boolean hasDots = expression.indexOf(PROPERTY_START) >= 0;
+
+ final Tokenizer tokenizer;
+ if (trimRootToken && hasDots) {
+ tokenizer = new Tokenizer(expression);
+ tokenizer.nextPropertyName();
+ if (tokenizer.getPosition() == EOF) {
+ return null;
+ }
+ } else {
+ tokenizer = new Tokenizer("." + expression);
+ }
+
+ int propertyPosition = tokenizer.getPosition();
+ while (value != null && tokenizer.peekChar() != EOF) {
+ switch (tokenizer.skipChar()) {
+ case INDEXED_START:
+ value = getIndexedValue(
+ expression,
+ propertyPosition,
+ tokenizer.getPosition(),
+ value,
+ tokenizer.nextToken(INDEXED_END));
+ break;
+ case MAPPED_START:
+ value = getMappedValue(
+ expression,
+ propertyPosition,
+ tokenizer.getPosition(),
+ value,
+ tokenizer.nextToken(MAPPED_END));
+ break;
+ case PROPERTY_START:
+ propertyPosition = tokenizer.getPosition();
+ value = getPropertyValue(value,
tokenizer.nextPropertyName());
+ break;
+ default:
+ // could not parse expression
+ return null;
+ }
+ }
+
+ return value;
+ }
+
+ private static Object getMappedValue(
+ final String expression, final int from, final int to, final
Object value, final String key)
+ throws Exception {
+ if (value == null || key == null) {
+ return null;
+ }
+
+ if (value instanceof Map) {
+ Object[] localParams = new Object[] {key};
+ ClassMap classMap = getClassMap(value.getClass());
+ Method method = classMap.findMethod("get", localParams);
+ return method.invoke(value, localParams);
+ }
+
+ final String message = String.format(
+ "The token '%s' at position '%d' refers to a java.util.Map,
but the value seems is an instance of '%s'",
+ expression.subSequence(from, to), from, value.getClass());
+
+ throw new Exception(message);
Review Comment:
This should be a more specific exception.
Note: I do not care if this was already done incorrectly somewhere else.
It's still wrong here.
##########
maven-model/src/main/java/org/apache/maven/model/io/xpp3/MavenXpp3ReaderEx.java:
##########
@@ -54,56 +55,62 @@ public boolean getAddDefaultEntities() {
/**
* @param reader a reader object.
* @param strict a strict object.
- * @throws IOException IOException if any.
- * @throws XmlPullParserException XmlPullParserException if
- * any.
* @return Model
+ * @throws IOException IOException if any.
+ * @throws XMLStreamException XMLStreamException if
+ * any.
*/
- public Model read(Reader reader, boolean strict, InputSource source)
throws IOException, XmlPullParserException {
- XmlPullParser parser =
- addDefaultEntities ? new
MXParser(EntityReplacementMap.defaultEntityReplacementMap) : new MXParser();
- parser.setInput(reader);
+ public Model read(Reader reader, boolean strict, InputSource source)
throws IOException, XMLStreamException {
+ XMLInputFactory factory = new com.ctc.wstx.stax.WstxInputFactory();
+ factory.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES,
false);
+ XMLStreamReader parser = null;
Review Comment:
try block needs to surround everything
##########
maven-core/src/main/java/org/apache/maven/utils/introspection/ReflectionValueExtractor.java:
##########
@@ -0,0 +1,325 @@
+/*
+ * 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.maven.utils.introspection;
+
+import java.lang.ref.WeakReference;
+import java.lang.reflect.Array;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.List;
+import java.util.Map;
+import java.util.WeakHashMap;
+
+/**
+ * <p>
+ * Using simple dotted expressions to extract the values from an Object
instance, For example we might want to extract a
+ * value like: <code>project.build.sourceDirectory</code>
+ * </p>
+ * <p>
+ * The implementation supports indexed, nested and mapped properties similar
to the JSP way.
+ * </p>
+ *
+ * @author <a href="mailto:ja...@maven.org";>Jason van Zyl </a>
+ * @author <a href="mailto:vincent.sive...@gmail.com";>Vincent Siveton</a>
+ *
+ * @see <a href=
+ *
"http://struts.apache.org/1.x/struts-taglib/indexedprops.html";>http://struts.apache.org/1.x/struts-taglib/indexedprops.html</a>
+ */
+public class ReflectionValueExtractor {
+ private static final Class<?>[] CLASS_ARGS = new Class[0];
+
+ private static final Object[] OBJECT_ARGS = new Object[0];
+
+ /**
+ * Use a WeakHashMap here, so the keys (Class objects) can be garbage
collected. This approach prevents permgen
+ * space overflows due to retention of discarded classloaders.
+ */
+ private static final Map<Class<?>, WeakReference<ClassMap>> CLASS_MAPS =
new WeakHashMap<>();
+
+ static final int EOF = -1;
+
+ static final char PROPERTY_START = '.';
+
+ static final char INDEXED_START = '[';
+
+ static final char INDEXED_END = ']';
+
+ static final char MAPPED_START = '(';
+
+ static final char MAPPED_END = ')';
+
+ static class Tokenizer {
+ final String expression;
+
+ int idx;
+
+ Tokenizer(String expression) {
+ this.expression = expression;
+ }
+
+ public int peekChar() {
+ return idx < expression.length() ? expression.charAt(idx) : EOF;
+ }
+
+ public int skipChar() {
+ return idx < expression.length() ? expression.charAt(idx++) : EOF;
+ }
+
+ public String nextToken(char delimiter) {
+ int start = idx;
+
+ while (idx < expression.length() && delimiter !=
expression.charAt(idx)) {
+ idx++;
+ }
+
+ // delimiter MUST be present
+ if (idx <= start || idx >= expression.length()) {
+ return null;
+ }
+
+ return expression.substring(start, idx++);
+ }
+
+ public String nextPropertyName() {
+ final int start = idx;
+
+ while (idx < expression.length() &&
Character.isJavaIdentifierPart(expression.charAt(idx))) {
+ idx++;
+ }
+
+ // property name does not require delimiter
+ if (idx <= start || idx > expression.length()) {
+ return null;
+ }
+
+ return expression.substring(start, idx);
+ }
+
+ public int getPosition() {
+ return idx < expression.length() ? idx : EOF;
+ }
+
+ // to make tokenizer look pretty in debugger
+ @Override
+ public String toString() {
+ return idx < expression.length() ? expression.substring(idx) :
"<EOF>";
+ }
+ }
+
+ private ReflectionValueExtractor() {}
+
+ /**
+ * <p>The implementation supports indexed, nested and mapped
properties.</p>
+ *
+ * <ul>
+ * <li>nested properties should be defined by a dot, i.e.
"user.address.street"</li>
+ * <li>indexed properties (java.util.List or array instance) should be
contains <code>(\\w+)\\[(\\d+)\\]</code>
+ * pattern, i.e. "user.addresses[1].street"</li>
+ * <li>mapped properties should be contains <code>(\\w+)\\((.+)\\)</code>
pattern, i.e.
+ * "user.addresses(myAddress).street"</li>
+ * </ul>
+ *
+ * @param expression not null expression
+ * @param root not null object
+ * @return the object defined by the expression
+ * @throws Exception if any
+ */
+ public static Object evaluate(String expression, Object root) throws
Exception {
+ return evaluate(expression, root, true);
+ }
+
+ /**
+ * <p>The implementation supports indexed, nested and mapped
properties.</p>
+ *
+ * <ul>
+ * <li>nested properties should be defined by a dot, i.e.
"user.address.street"</li>
+ * <li>indexed properties (java.util.List or array instance) should be
contains <code>(\\w+)\\[(\\d+)\\]</code>
+ * pattern, i.e. "user.addresses[1].street"</li>
+ * <li>mapped properties should be contains <code>(\\w+)\\((.+)\\)</code>
pattern, i.e.
+ * "user.addresses(myAddress).street"</li>
+ * </ul>
+ *
+ * @param expression not null expression
+ * @param root not null object
+ * @param trimRootToken root start
+ * @return the object defined by the expression
+ * @throws Exception if any
+ */
+ // TODO: don't throw Exception
+ public static Object evaluate(String expression, final Object root, final
boolean trimRootToken) throws Exception {
+ Object value = root;
+
+ //
----------------------------------------------------------------------
+ // Walk the dots and retrieve the ultimate value desired from the
+ // MavenProject instance.
+ //
----------------------------------------------------------------------
+
+ if (expression == null || expression.isEmpty() ||
!Character.isJavaIdentifierStart(expression.charAt(0))) {
+ return null;
+ }
+
+ boolean hasDots = expression.indexOf(PROPERTY_START) >= 0;
+
+ final Tokenizer tokenizer;
+ if (trimRootToken && hasDots) {
+ tokenizer = new Tokenizer(expression);
+ tokenizer.nextPropertyName();
+ if (tokenizer.getPosition() == EOF) {
+ return null;
+ }
+ } else {
+ tokenizer = new Tokenizer("." + expression);
+ }
+
+ int propertyPosition = tokenizer.getPosition();
+ while (value != null && tokenizer.peekChar() != EOF) {
+ switch (tokenizer.skipChar()) {
+ case INDEXED_START:
+ value = getIndexedValue(
+ expression,
+ propertyPosition,
+ tokenizer.getPosition(),
+ value,
+ tokenizer.nextToken(INDEXED_END));
+ break;
+ case MAPPED_START:
+ value = getMappedValue(
+ expression,
+ propertyPosition,
+ tokenizer.getPosition(),
+ value,
+ tokenizer.nextToken(MAPPED_END));
+ break;
+ case PROPERTY_START:
+ propertyPosition = tokenizer.getPosition();
+ value = getPropertyValue(value,
tokenizer.nextPropertyName());
+ break;
+ default:
+ // could not parse expression
+ return null;
+ }
+ }
+
+ return value;
+ }
+
+ private static Object getMappedValue(
+ final String expression, final int from, final int to, final
Object value, final String key)
+ throws Exception {
+ if (value == null || key == null) {
+ return null;
+ }
+
+ if (value instanceof Map) {
+ Object[] localParams = new Object[] {key};
+ ClassMap classMap = getClassMap(value.getClass());
+ Method method = classMap.findMethod("get", localParams);
+ return method.invoke(value, localParams);
+ }
+
+ final String message = String.format(
+ "The token '%s' at position '%d' refers to a java.util.Map,
but the value seems is an instance of '%s'",
+ expression.subSequence(from, to), from, value.getClass());
+
+ throw new Exception(message);
+ }
+
+ private static Object getIndexedValue(
+ final String expression, final int from, final int to, final
Object value, final String indexStr)
+ throws Exception {
+ try {
+ int index = Integer.parseInt(indexStr);
Review Comment:
indexStr should probably be an int
##########
maven-core/src/main/java/org/apache/maven/utils/introspection/ReflectionValueExtractor.java:
##########
@@ -0,0 +1,325 @@
+/*
+ * 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.maven.utils.introspection;
+
+import java.lang.ref.WeakReference;
+import java.lang.reflect.Array;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.List;
+import java.util.Map;
+import java.util.WeakHashMap;
+
+/**
+ * <p>
+ * Using simple dotted expressions to extract the values from an Object
instance, For example we might want to extract a
+ * value like: <code>project.build.sourceDirectory</code>
+ * </p>
+ * <p>
+ * The implementation supports indexed, nested and mapped properties similar
to the JSP way.
+ * </p>
+ *
+ * @author <a href="mailto:ja...@maven.org";>Jason van Zyl </a>
+ * @author <a href="mailto:vincent.sive...@gmail.com";>Vincent Siveton</a>
+ *
+ * @see <a href=
+ *
"http://struts.apache.org/1.x/struts-taglib/indexedprops.html";>http://struts.apache.org/1.x/struts-taglib/indexedprops.html</a>
+ */
+public class ReflectionValueExtractor {
+ private static final Class<?>[] CLASS_ARGS = new Class[0];
+
+ private static final Object[] OBJECT_ARGS = new Object[0];
+
+ /**
+ * Use a WeakHashMap here, so the keys (Class objects) can be garbage
collected. This approach prevents permgen
+ * space overflows due to retention of discarded classloaders.
+ */
+ private static final Map<Class<?>, WeakReference<ClassMap>> CLASS_MAPS =
new WeakHashMap<>();
+
+ static final int EOF = -1;
+
+ static final char PROPERTY_START = '.';
+
+ static final char INDEXED_START = '[';
+
+ static final char INDEXED_END = ']';
+
+ static final char MAPPED_START = '(';
+
+ static final char MAPPED_END = ')';
+
+ static class Tokenizer {
+ final String expression;
+
+ int idx;
+
+ Tokenizer(String expression) {
+ this.expression = expression;
+ }
+
+ public int peekChar() {
+ return idx < expression.length() ? expression.charAt(idx) : EOF;
+ }
+
+ public int skipChar() {
+ return idx < expression.length() ? expression.charAt(idx++) : EOF;
+ }
+
+ public String nextToken(char delimiter) {
+ int start = idx;
+
+ while (idx < expression.length() && delimiter !=
expression.charAt(idx)) {
+ idx++;
+ }
+
+ // delimiter MUST be present
+ if (idx <= start || idx >= expression.length()) {
+ return null;
+ }
+
+ return expression.substring(start, idx++);
+ }
+
+ public String nextPropertyName() {
+ final int start = idx;
+
+ while (idx < expression.length() &&
Character.isJavaIdentifierPart(expression.charAt(idx))) {
+ idx++;
+ }
+
+ // property name does not require delimiter
+ if (idx <= start || idx > expression.length()) {
+ return null;
+ }
+
+ return expression.substring(start, idx);
+ }
+
+ public int getPosition() {
+ return idx < expression.length() ? idx : EOF;
+ }
+
+ // to make tokenizer look pretty in debugger
+ @Override
+ public String toString() {
+ return idx < expression.length() ? expression.substring(idx) :
"<EOF>";
+ }
+ }
+
+ private ReflectionValueExtractor() {}
+
+ /**
+ * <p>The implementation supports indexed, nested and mapped
properties.</p>
+ *
+ * <ul>
+ * <li>nested properties should be defined by a dot, i.e.
"user.address.street"</li>
+ * <li>indexed properties (java.util.List or array instance) should be
contains <code>(\\w+)\\[(\\d+)\\]</code>
+ * pattern, i.e. "user.addresses[1].street"</li>
+ * <li>mapped properties should be contains <code>(\\w+)\\((.+)\\)</code>
pattern, i.e.
+ * "user.addresses(myAddress).street"</li>
+ * </ul>
+ *
+ * @param expression not null expression
+ * @param root not null object
+ * @return the object defined by the expression
+ * @throws Exception if any
+ */
+ public static Object evaluate(String expression, Object root) throws
Exception {
+ return evaluate(expression, root, true);
+ }
+
+ /**
+ * <p>The implementation supports indexed, nested and mapped
properties.</p>
+ *
+ * <ul>
+ * <li>nested properties should be defined by a dot, i.e.
"user.address.street"</li>
+ * <li>indexed properties (java.util.List or array instance) should be
contains <code>(\\w+)\\[(\\d+)\\]</code>
+ * pattern, i.e. "user.addresses[1].street"</li>
+ * <li>mapped properties should be contains <code>(\\w+)\\((.+)\\)</code>
pattern, i.e.
+ * "user.addresses(myAddress).street"</li>
+ * </ul>
+ *
+ * @param expression not null expression
+ * @param root not null object
+ * @param trimRootToken root start
+ * @return the object defined by the expression
+ * @throws Exception if any
+ */
+ // TODO: don't throw Exception
+ public static Object evaluate(String expression, final Object root, final
boolean trimRootToken) throws Exception {
+ Object value = root;
+
+ //
----------------------------------------------------------------------
+ // Walk the dots and retrieve the ultimate value desired from the
+ // MavenProject instance.
+ //
----------------------------------------------------------------------
+
+ if (expression == null || expression.isEmpty() ||
!Character.isJavaIdentifierStart(expression.charAt(0))) {
+ return null;
+ }
+
+ boolean hasDots = expression.indexOf(PROPERTY_START) >= 0;
+
+ final Tokenizer tokenizer;
+ if (trimRootToken && hasDots) {
+ tokenizer = new Tokenizer(expression);
+ tokenizer.nextPropertyName();
+ if (tokenizer.getPosition() == EOF) {
+ return null;
+ }
+ } else {
+ tokenizer = new Tokenizer("." + expression);
+ }
+
+ int propertyPosition = tokenizer.getPosition();
+ while (value != null && tokenizer.peekChar() != EOF) {
+ switch (tokenizer.skipChar()) {
+ case INDEXED_START:
+ value = getIndexedValue(
+ expression,
+ propertyPosition,
+ tokenizer.getPosition(),
+ value,
+ tokenizer.nextToken(INDEXED_END));
+ break;
+ case MAPPED_START:
+ value = getMappedValue(
+ expression,
+ propertyPosition,
+ tokenizer.getPosition(),
+ value,
+ tokenizer.nextToken(MAPPED_END));
+ break;
+ case PROPERTY_START:
+ propertyPosition = tokenizer.getPosition();
+ value = getPropertyValue(value,
tokenizer.nextPropertyName());
+ break;
+ default:
+ // could not parse expression
+ return null;
+ }
+ }
+
+ return value;
+ }
+
+ private static Object getMappedValue(
+ final String expression, final int from, final int to, final
Object value, final String key)
+ throws Exception {
+ if (value == null || key == null) {
+ return null;
+ }
+
+ if (value instanceof Map) {
+ Object[] localParams = new Object[] {key};
+ ClassMap classMap = getClassMap(value.getClass());
+ Method method = classMap.findMethod("get", localParams);
+ return method.invoke(value, localParams);
+ }
+
+ final String message = String.format(
+ "The token '%s' at position '%d' refers to a java.util.Map,
but the value seems is an instance of '%s'",
+ expression.subSequence(from, to), from, value.getClass());
+
+ throw new Exception(message);
+ }
+
+ private static Object getIndexedValue(
+ final String expression, final int from, final int to, final
Object value, final String indexStr)
+ throws Exception {
+ try {
+ int index = Integer.parseInt(indexStr);
+
+ if (value.getClass().isArray()) {
+ return Array.get(value, index);
+ }
+
+ if (value instanceof List) {
+ ClassMap classMap = getClassMap(value.getClass());
+ // use get method on List interface
+ Object[] localParams = new Object[] {index};
+ Method method = classMap.findMethod("get", localParams);
+ return method.invoke(value, localParams);
+ }
+ } catch (NumberFormatException e) {
+ return null;
Review Comment:
This seems very suspicious
##########
maven-model/src/main/java/org/apache/maven/model/io/xpp3/MavenXpp3ReaderEx.java:
##########
@@ -112,13 +119,13 @@ public Model read(InputStream in, InputSource source)
throws IOException, XmlPul
*
* @param parser a parser object.
* @param strict a strict object.
- * @throws IOException IOException if any.
- * @throws XmlPullParserException XmlPullParserException if
- * any.
* @return Model
+ * @throws IOException IOException if any.
+ * @throws XMLStreamException XMLStreamException if
Review Comment:
definitely needs to be expanded and distinguished from IOException
> Remove dependency on plexus-utils
> ---------------------------------
>
> Key: MNG-7820
> URL: https://issues.apache.org/jira/browse/MNG-7820
> Project: Maven
> Issue Type: Task
> Reporter: Guillaume Nodet
> Priority: Major
> Fix For: 4.0.0-alpha-8
>
>
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