1 files changed, 120 insertions, 0 deletions
diff --git a/src/plugins/preflighting.core/src/com/motorolamobility/preflighting/core/internal/utils/StringUsageIdentifier.java b/src/plugins/preflighting.core/src/com/motorolamobility/preflighting/core/internal/utils/StringUsageIdentifier.java
new file mode 100644
index 0000000..d610b39
--- /dev/null
+++ b/src/plugins/preflighting.core/src/com/motorolamobility/preflighting/core/internal/utils/StringUsageIdentifier.java
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2012 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.motorolamobility.preflighting.core.internal.utils;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+
+import com.motorolamobility.preflighting.core.applicationdata.XMLElement;
+
+/**
+ * Utility class to help identifying strings that are used inside XML files 
+ */
+public class StringUsageIdentifier
+{
+    private static final String STRING_USAGE_PATTERN = "@string/";
+
+    /**
+     * Identify strings used inside XML files
+     * @param xmlElements representation of the XML in the App validator
+     * @return set with strings used
+     */
+    public static Set<String> identifyStringsUsed(List<XMLElement> xmlElements)
+    {
+        Set<String> stringsUsed = new HashSet<String>();
+        if (xmlElements != null)
+        {
+            for (XMLElement xml : xmlElements)
+            {
+                Document document = xml.getDocument();
+                for (Node node = document.getFirstChild(); node != null; node =
+                        node.getNextSibling())
+                {
+                    visitNode(stringsUsed, node);
+                }
+            }
+        }
+        return stringsUsed;
+    }
+
+    /**
+     * Visit the node
+     * @param stringsUsed set to keep the strings used
+     * @param node xml element to visit
+     */
+    private static void visitNode(Set<String> stringsUsed, Node node)
+    {
+        checkStringsUsedInNode(stringsUsed, node);
+        if (node.hasChildNodes())
+        {
+            NodeList list = node.getChildNodes();
+            for (int i = 0; i < list.getLength(); i++)
+            {
+                Node subnode = list.item(i);
+                visitNode(stringsUsed, subnode);
+            }
+        }
+    }
+
+    /**
+     * Visits attributes from the node
+     * @param stringsUsed set to keep the strings used
+     * @param node xml element to visit
+     */
+    private static void checkStringsUsedInNode(Set<String> stringsUsed, Node node)
+    {
+        if (node.getNodeType() != Node.COMMENT_NODE)
+        {
+            NamedNodeMap map = node.getAttributes();
+            if (map != null)
+            {
+                for (int index = 0; index < map.getLength(); index++)
+                {
+                    Node atr = map.item(index);
+                    if ((atr != null) && (atr.getNodeValue() != null)
+                            && !atr.getNodeValue().trim().equals("")) //$NON-NLS-1$
+                    {
+                        String value = atr.getNodeValue();
+                        readStringId(stringsUsed, value);
+                    }
+                }
+            }
+        }
+
+    }
+
+    /**
+     * Check if attribute contains {@link StringUsageIdentifier#STRING_USAGE_PATTERN} and if so, get the string id  
+     * @param stringsUsed set to keep the strings used
+     * @param value attribute node value
+     */
+    private static void readStringId(Set<String> stringsUsed, String value)
+    {
+        int i = value.indexOf(STRING_USAGE_PATTERN);
+        if (i >= 0)
+        {
+            //cut text after "@string/
+            String stringId = value.substring(i + STRING_USAGE_PATTERN.length());
+            stringsUsed.add(stringId);
+        }
+    }
+}