feat(gui): search in resource files (#347) (#1032) (PR #1108)

Co-authored-by: tobias <tobias.hotmail.com>

jadx-core/src/main/java/jadx/core/utils/StringUtils.java

@@ -256,6 +256,56 @@ public class StringUtils {
 		return count;
 	}
 
+	/**
+	 * returns how many lines does it have between start to pos in content.
+	 */
+	public static int countLinesByPos(String content, int pos, int start) {
+		if (start >= pos) {
+			return 0;
+		}
+		int count = 0;
+		int tempPos = start;
+		do {
+			tempPos = content.indexOf("\n", tempPos);
+			if (tempPos == -1) {
+				break;
+			}
+			if (tempPos >= pos) {
+				break;
+			}
+			count += 1;
+			tempPos += 1;
+		} while (tempPos < content.length());
+		return count;
+	}
+
+	/**
+	 * returns lines that contain pos to end if end is not -1.
+	 */
+	public static String getLine(String content, int pos, int end) {
+		if (pos >= content.length()) {
+			return "";
+		}
+		if (end != -1) {
+			if (end > content.length()) {
+				end = content.length() - 1;
+			}
+		} else {
+			end = pos + 1;
+		}
+		// get to line head
+		int headPos = content.lastIndexOf("\n", pos);
+		if (headPos == -1) {
+			headPos = 0;
+		}
+		// get to line end
+		int endPos = content.indexOf("\n", end);
+		if (endPos == -1) {
+			endPos = content.length();
+		}
+		return content.substring(headPos, endPos);
+	}
+
 	public static boolean isWhite(char chr) {
 		return WHITES.indexOf(chr) != -1;
 	}

jadx-gui/src/main/java/jadx/gui/jobs/IndexJob.java

@@ -12,7 +12,6 @@ import jadx.gui.JadxWrapper;
 import jadx.gui.utils.CacheObject;
 import jadx.gui.utils.CodeLinesInfo;
 import jadx.gui.utils.CodeUsageInfo;
-import jadx.gui.utils.JNodeCache;
 import jadx.gui.utils.NLS;
 import jadx.gui.utils.UiUtils;
 import jadx.gui.utils.search.StringRef;
@@ -30,12 +29,12 @@ public class IndexJob extends BackgroundJob {
 
 	@Override
 	protected void runJob() {
-		JNodeCache nodeCache = cache.getNodeCache();
-		TextSearchIndex index = new TextSearchIndex(nodeCache);
-		CodeUsageInfo usageInfo = new CodeUsageInfo(nodeCache);
+		TextSearchIndex index = new TextSearchIndex(cache);
+		CodeUsageInfo usageInfo = new CodeUsageInfo(cache.getNodeCache());
+
 		cache.setTextIndex(index);
 		cache.setUsageInfo(usageInfo);
-
+		addTask(index::indexResource);
 		for (final JavaClass cls : wrapper.getIncludedClasses()) {
 			addTask(() -> indexCls(cache, cls));
 		}

jadx-gui/src/main/java/jadx/gui/settings/JadxSettings.java

@@ -63,6 +63,10 @@ public class JadxSettings extends JadxCLIArgs {
 	private Map<String, WindowLocation> windowPos = new HashMap<>();
 	private int mainWindowExtendedState = JFrame.NORMAL;
 	private boolean codeAreaLineWrap = false;
+	private int srhResourceSkipSize = 1000;
+	private String srhResourceFileExt = ".xml|.html|.js|.json|.txt";
+	private boolean keepCommonDialogOpen = false;
+
 	/**
 	 * UI setting: the width of the tree showing the classes, resources, ...
 	 */
@@ -400,6 +404,30 @@ public class JadxSettings extends JadxCLIArgs {
 		return this.codeAreaLineWrap;
 	}
 
+	public int getSrhResourceSkipSize() {
+		return srhResourceSkipSize;
+	}
+
+	public void setSrhResourceSkipSize(int size) {
+		srhResourceSkipSize = size;
+	}
+
+	public String getSrhResourceFileExt() {
+		return srhResourceFileExt;
+	}
+
+	public void setSrhResourceFileExt(String all) {
+		srhResourceFileExt = all.trim();
+	}
+
+	public void setKeepCommonDialogOpen(boolean yes) {
+		keepCommonDialogOpen = yes;
+	}
+
+	public boolean getKeepCommonDialogOpen() {
+		return keepCommonDialogOpen;
+	}
+
 	private void upgradeSettings(int fromVersion) {
 		LOG.debug("upgrade settings from version: {} to {}", fromVersion, CURRENT_SETTINGS_VERSION);
 		if (fromVersion == 0) {
@@ -454,6 +482,10 @@ public class JadxSettings extends JadxCLIArgs {
 			showHeapUsageBar = false;
 			fromVersion++;
 		}
+		if (fromVersion == 10) {
+			srhResourceSkipSize = 3;
+			srhResourceFileExt = ".xml|.html|.js|.json|.txt";
+		}
 		settingsVersion = CURRENT_SETTINGS_VERSION;
 		sync();
 	}

jadx-gui/src/main/java/jadx/gui/settings/JadxSettingsWindow.java

@@ -11,6 +11,10 @@ import java.util.Arrays;
 import java.util.Collection;
 
 import javax.swing.*;
+import javax.swing.event.ChangeEvent;
+import javax.swing.event.ChangeListener;
+import javax.swing.event.DocumentEvent;
+import javax.swing.event.DocumentListener;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -74,6 +78,7 @@ public class JadxSettingsWindow extends JDialog {
 		leftPanel.add(makeProjectGroup());
 		leftPanel.add(makeEditorGroup());
 		leftPanel.add(makeOtherGroup());
+		leftPanel.add(makeSearchResGroup());
 
 		rightPanel.add(makeDecompilationGroup());
 
@@ -474,6 +479,51 @@ public class JadxSettingsWindow extends JDialog {
 		return group;
 	}
 
+	private SettingsGroup makeSearchResGroup() {
+		SettingsGroup group = new SettingsGroup(NLS.str("preferences.search_res_title"));
+		int prevSize = settings.getSrhResourceSkipSize();
+		String prevExts = settings.getSrhResourceFileExt();
+		SpinnerNumberModel sizeLimitModel = new SpinnerNumberModel(prevSize,
+				0, Integer.MAX_VALUE, 1);
+		JSpinner spinner = new JSpinner(sizeLimitModel);
+		JTextField fileExtField = new JTextField();
+		group.addRow(NLS.str("preferences.res_skip_file"), spinner);
+		group.addRow(NLS.str("preferences.res_file_ext"), fileExtField);
+
+		spinner.addChangeListener(new ChangeListener() {
+			@Override
+			public void stateChanged(ChangeEvent e) {
+				int size = (Integer) spinner.getValue();
+				settings.setSrhResourceSkipSize(size);
+			}
+		});
+
+		fileExtField.getDocument().addDocumentListener(new DocumentListener() {
+			private void update() {
+				String ext = fileExtField.getText();
+				settings.setSrhResourceFileExt(ext);
+			}
+
+			@Override
+			public void insertUpdate(DocumentEvent e) {
+				update();
+			}
+
+			@Override
+			public void removeUpdate(DocumentEvent e) {
+				update();
+			}
+
+			@Override
+			public void changedUpdate(DocumentEvent e) {
+				update();
+			}
+		});
+		fileExtField.setText(prevExts);
+
+		return group;
+	}
+
 	private void needReload() {
 		needReload = true;
 	}

jadx-gui/src/main/java/jadx/gui/treemodel/JResSearchNode.java

+package jadx.gui.treemodel;
+
+import javax.swing.*;
+
+import jadx.core.utils.StringUtils;
+
+public class JResSearchNode extends JNode {
+	private static final long serialVersionUID = -2222084945157778639L;
+	private final transient JResource resNode;
+	private final transient String text;
+	private final transient int line;
+	private final transient int pos;
+
+	public JResSearchNode(JResource resNode, String text, int line, int pos) {
+		this.pos = pos;
+		this.text = text;
+		this.line = line;
+		this.resNode = resNode;
+	}
+
+	public JResource getResNode() {
+		return resNode;
+	}
+
+	public int getPos() {
+		return pos;
+	}
+
+	@Override
+	public String makeDescString() {
+		return text;
+	}
+
+	@Override
+	public JClass getJParent() {
+		return resNode.getJParent();
+	}
+
+	@Override
+	public int getLine() {
+		return line;
+	}
+
+	@Override
+	public String makeLongStringHtml() {
+		return getName();
+	}
+
+	@Override
+	public Icon getIcon() {
+		return resNode.getIcon();
+	}
+
+	@Override
+	public String getName() {
+		return resNode.getName();
+	}
+
+	@Override
+	public String makeString() {
+		return resNode.makeString();
+	}
+
+	@Override
+	public boolean hasDescString() {
+		return !StringUtils.isEmpty(text);
+	}
+}

jadx-gui/src/main/java/jadx/gui/ui/CommonSearchDialog.java

@@ -111,7 +111,10 @@ public abstract class CommonSearchDialog extends JDialog {
 		}
 		JumpPosition jmpPos;
 		JNode node = (JNode) resultsModel.getValueAt(selectedId, 0);
-		if (node instanceof CodeNode) {
+		if (node instanceof JResSearchNode) {
+			jmpPos = new JumpPosition(((JResSearchNode) node).getResNode(), node.getLine())
+					.setPrecise(((JResSearchNode) node).getPos());
+		} else if (node instanceof CodeNode) {
 			CodeNode codeNode = (CodeNode) node;
 			jmpPos = new JumpPosition(node.getRootClass(), node.getLine(), codeNode.getPos());
 			if (codeNode.isPrecisePos()) {
@@ -121,8 +124,9 @@ public abstract class CommonSearchDialog extends JDialog {
 			jmpPos = new JumpPosition(node.getRootClass(), node.getLine());
 		}
 		tabbedPane.codeJump(jmpPos);
-
-		dispose();
+		if (!mainWindow.getSettings().getKeepCommonDialogOpen()) {
+			dispose();
+		}
 	}
 
 	@Override
@@ -148,6 +152,15 @@ public abstract class CommonSearchDialog extends JDialog {
 		JPanel buttonPane = new JPanel();
 		buttonPane.setLayout(new BoxLayout(buttonPane, BoxLayout.LINE_AXIS));
 		buttonPane.setBorder(BorderFactory.createEmptyBorder(0, 10, 10, 10));
+
+		JCheckBox cbKeepOpen = new JCheckBox(NLS.str("search_dialog.keep_open"));
+		cbKeepOpen.setSelected(mainWindow.getSettings().getKeepCommonDialogOpen());
+		cbKeepOpen.addActionListener(e -> {
+			mainWindow.getSettings().setKeepCommonDialogOpen(cbKeepOpen.isSelected());
+			mainWindow.getSettings().sync();
+		});
+		buttonPane.add(cbKeepOpen);
+		buttonPane.add(Box.createRigidArea(new Dimension(15, 0)));
 		buttonPane.add(progressPane);
 		buttonPane.add(Box.createRigidArea(new Dimension(5, 0)));
 		buttonPane.add(Box.createHorizontalGlue());
@@ -251,6 +264,10 @@ public abstract class CommonSearchDialog extends JDialog {
 		resultsInfoLabel.setText(statusText);
 	}
 
+	protected void showSearchState() {
+		resultsInfoLabel.setText(NLS.str("search_dialog.tip_searching"));
+	}
+
 	protected static class ResultsTable extends JTable {
 		private static final long serialVersionUID = 3901184054736618969L;
 		private final transient ResultsTableCellRenderer renderer;

jadx-gui/src/main/java/jadx/gui/ui/MainWindow.java

@@ -445,6 +445,8 @@ public class MainWindow extends JFrame {
 	protected void resetCache() {
 		cacheObject.reset();
 		// TODO: decompilation freezes sometime with several threads
+		this.cacheObject.setJRoot(treeRoot);
+		this.cacheObject.setJadxSettings(settings);
 		int threadsCount = settings.getThreadsCount();
 		cacheObject.setDecompileJob(new DecompileJob(wrapper, threadsCount));
 		cacheObject.setIndexJob(new IndexJob(wrapper, cacheObject, threadsCount));
@@ -563,6 +565,8 @@ public class MainWindow extends JFrame {
 		treeModel.setRoot(treeRoot);
 		treeRoot.update();
 		reloadTree();
+		cacheObject.setJRoot(treeRoot);
+		cacheObject.setJadxSettings(settings);
 	}
 
 	private void clearTree() {

jadx-gui/src/main/java/jadx/gui/ui/SearchDialog.java

@@ -39,7 +39,8 @@ public class SearchDialog extends CommonSearchDialog {
 		FIELD,
 		CODE,
 		IGNORE_CASE,
-		USE_REGEX
+		USE_REGEX,
+		Resource
 	}
 
 	private transient Set<SearchOptions> options;
@@ -76,7 +77,6 @@ public class SearchDialog extends CommonSearchDialog {
 		if (lastSearch != null) {
 			searchField.setText(lastSearch);
 			searchField.selectAll();
-			searchEmitter.emitSearch();
 		}
 		searchField.requestFocus();
 	}
@@ -91,6 +91,7 @@ public class SearchDialog extends CommonSearchDialog {
 		JCheckBox caseChBox = makeOptionsCheckBox(NLS.str("search_dialog.ignorecase"), SearchOptions.IGNORE_CASE);
 		JCheckBox regexChBox = makeOptionsCheckBox(NLS.str("search_dialog.regex"), SearchOptions.USE_REGEX);
 
+		JCheckBox resChBox = makeOptionsCheckBox(NLS.str("search_dialog.resource"), SearchOptions.Resource);
 		JCheckBox clsChBox = makeOptionsCheckBox(NLS.str("search_dialog.class"), SearchOptions.CLASS);
 		JCheckBox mthChBox = makeOptionsCheckBox(NLS.str("search_dialog.method"), SearchOptions.METHOD);
 		JCheckBox fldChBox = makeOptionsCheckBox(NLS.str("search_dialog.field"), SearchOptions.FIELD);
@@ -98,6 +99,7 @@ public class SearchDialog extends CommonSearchDialog {
 
 		JPanel searchInPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
 		searchInPanel.setBorder(BorderFactory.createTitledBorder(NLS.str("search_dialog.search_in")));
+		searchInPanel.add(resChBox);
 		searchInPanel.add(clsChBox);
 		searchInPanel.add(mthChBox);
 		searchInPanel.add(fldChBox);
@@ -200,6 +202,7 @@ public class SearchDialog extends CommonSearchDialog {
 		if (index == null) {
 			return Flowable.empty();
 		}
+		showSearchState();
 		return index.buildSearch(text, options);
 	}
 

jadx-gui/src/main/java/jadx/gui/ui/codearea/CodePanel.java

@@ -149,10 +149,10 @@ public class CodePanel extends JPanel {
 	}
 
 	public void refresh() {
-		int line;
-		int lineCount;
+		int line = 0;
 		int tokenIndex;
 		int pos = codeArea.getCaretPosition();
+		int lineCount = codeArea.getLineCount();
 		try {
 			// after rename the change of document is undetectable, so
 			// use Token offset to calculate the new caret position.
@@ -161,10 +161,12 @@ public class CodePanel extends JPanel {
 			tokenIndex = getTokenIndexByOffset(token, pos);
 		} catch (BadLocationException e) {
 			e.printStackTrace();
-			tokenIndex = 0;
-			line = codeArea.getLineCount() - 1;
+			tokenIndex = -1;
+		}
+		if (tokenIndex == -1) {
+			refreshToViewport();
+			return;
 		}
-		lineCount = codeArea.getLineCount();
 		codeArea.refresh();
 		initLineNumbers();
 		int lineDiff = codeArea.getLineCount() - lineCount;
@@ -184,14 +186,23 @@ public class CodePanel extends JPanel {
 		});
 	}
 
+	private void refreshToViewport() {
+		JViewport viewport = getCodeScrollPane().getViewport();
+		Point viewPosition = viewport.getViewPosition();
+		codeArea.refresh();
+		initLineNumbers();
+		SwingUtilities.invokeLater(() -> {
+			viewport.setViewPosition(viewPosition);
+		});
+	}
+
 	private int getTokenIndexByOffset(Token token, int offset) {
 		if (token != null) {
 			int index = 1;
 			while (token.getEndOffset() < offset) {
 				token = token.getNextToken();
 				if (token == null) {
-					index = 0;
-					break;
+					return -1;
 				}
 				index++;
 			}
@@ -201,7 +212,7 @@ public class CodePanel extends JPanel {
 	}
 
 	private int getOffsetOfTokenByIndex(int index, Token token) {
-		if (token != null) {
+		if (token != null && index != -1) {
 			for (int i = 0; i < index; i++) {
 				token = token.getNextToken();
 				if (token == null) {

jadx-gui/src/main/java/jadx/gui/utils/CacheObject.java

@@ -7,6 +7,8 @@ import org.jetbrains.annotations.Nullable;
 
 import jadx.gui.jobs.DecompileJob;
 import jadx.gui.jobs.IndexJob;
+import jadx.gui.settings.JadxSettings;
+import jadx.gui.treemodel.JRoot;
 import jadx.gui.ui.SearchDialog;
 import jadx.gui.utils.search.TextSearchIndex;
 
@@ -20,12 +22,16 @@ public class CacheObject {
 	private String lastSearch;
 	private JNodeCache jNodeCache;
 	private Set<SearchDialog.SearchOptions> lastSearchOptions;
+	private JRoot jRoot;
+	private JadxSettings settings;
 
 	public CacheObject() {
 		reset();
 	}
 
 	public void reset() {
+		jRoot = null;
+		settings = null;
 		decompileJob = null;
 		indexJob = null;
 		textIndex = null;
@@ -89,4 +95,20 @@ public class CacheObject {
 	public Set<SearchDialog.SearchOptions> getLastSearchOptions() {
 		return lastSearchOptions;
 	}
+
+	public void setJadxSettings(JadxSettings settings) {
+		this.settings = settings;
+	}
+
+	public JadxSettings getJadxSettings() {
+		return this.settings;
+	}
+
+	public JRoot getJRoot() {
+		return jRoot;
+	}
+
+	public void setJRoot(JRoot jRoot) {
+		this.jRoot = jRoot;
+	}
 }

jadx-gui/src/main/java/jadx/gui/utils/search/CodeIndex.java

@@ -47,7 +47,7 @@ public class CodeIndex {
 			}
 			LOG.debug("Code search complete: {}, memory usage: {}", searchSettings.getSearchString(), UiUtils.memoryInfo());
 			emitter.onComplete();
-		}, BackpressureStrategy.LATEST);
+		}, BackpressureStrategy.BUFFER);
 	}
 
 	public int size() {

jadx-gui/src/main/java/jadx/gui/utils/search/ResourceIndex.java

+package jadx.gui.utils.search;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.*;
+import java.util.concurrent.*;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipFile;
+
+import javax.swing.tree.TreeNode;
+
+import io.reactivex.BackpressureStrategy;
+import io.reactivex.Flowable;
+import io.reactivex.FlowableEmitter;
+
+import jadx.api.ResourceFile;
+import jadx.api.ResourceType;
+import jadx.core.utils.files.FileUtils;
+import jadx.gui.treemodel.JResSearchNode;
+import jadx.gui.treemodel.JResource;
+import jadx.gui.utils.CacheObject;
+
+import static jadx.core.utils.StringUtils.*;
+
+public class ResourceIndex {
+	private final List<JResource> resNodes = new ArrayList<>();
+	private final Set<String> extSet = new HashSet<>();
+	private CacheObject cache;
+	private String fileExts;
+	private boolean anyExt;
+	private int sizeLimit;
+
+	public ResourceIndex(CacheObject cache) {
+		this.cache = cache;
+	}
+
+	private void search(final JResource resNode,
+			FlowableEmitter<JResSearchNode> emitter,
+			SearchSettings searchSettings) {
+		int pos = 0;
+		int line = 0;
+		int lastPos = 0;
+		int lastLineOccurred = -1;
+		JResSearchNode lastNode = null;
+		int searchStrLen = searchSettings.getSearchString().length();
+		String content;
+		try {
+			content = resNode.getContent();
+		} catch (Exception e) {
+			e.printStackTrace();
+			return;
+		}
+		do {
+			searchSettings.setStartPos(lastPos);
+			pos = searchSettings.find(content);
+			if (pos > -1) {
+				line += countLinesByPos(content, pos, lastPos);
+				lastPos = pos + searchStrLen;
+				String lineText = getLine(content, pos, lastPos);
+				if (lastLineOccurred != line) {
+					lastLineOccurred = line;
+					if (lastNode != null) {
+						emitter.onNext(lastNode);
+					}
+					lastNode = new JResSearchNode(resNode, lineText.trim(), line + 1, pos);
+				}
+			} else {
+				if (lastNode != null) { // commit the final result node.
+					emitter.onNext(lastNode);
+				}
+				break;
+			}
+		} while (!emitter.isCancelled() && lastPos < content.length());
+	}
+
+	public Flowable<JResSearchNode> search(SearchSettings settings) {
+		refreshSettings();
+		if (resNodes.size() == 0) {
+			return Flowable.empty();
+		}
+		return Flowable.create(emitter -> {
+			for (JResource resNode : resNodes) {
+				if (!emitter.isCancelled()) {
+					search(resNode, emitter, settings);
+				}
+			}
+			emitter.onComplete();
+		}, BackpressureStrategy.BUFFER);
+	}
+
+	public void index() {
+		refreshSettings();
+	}
+
+	private void clear() {
+		anyExt = false;
+		sizeLimit = -1;
+		fileExts = "";
+		extSet.clear();
+		resNodes.clear();
+	}
+
+	private void traverseTree(TreeNode root, ZipFile zip) {
+		for (int i = 0; i < root.getChildCount(); i++) {
+			TreeNode node = root.getChildAt(i);
+			if (node instanceof JResource) {
+				JResource resNode = (JResource) node;
+				try {
+					resNode.loadNode();
+				} catch (Exception e) {
+					e.printStackTrace();
+					return;
+				}
+				ResourceFile resFile = resNode.getResFile();
+				if (resFile == null) {
+					traverseTree(node, zip);
+				} else {
+					if (resFile.getType() == ResourceType.ARSC && shouldSearchXML()) {
+						resFile.loadContent();
+						resNode.getFiles().forEach(t -> traverseTree(t, null));
+					} else {
+						filter(resNode, zip);
+					}
+				}
+			}
+		}
+	}
+
+	private boolean shouldSearchXML() {
+		return anyExt || fileExts.contains(".xml");
+	}
+
+	private ZipFile getZipFile(TreeNode res) {
+		for (int i = 0; i < res.getChildCount(); i++) {
+			TreeNode node = res.getChildAt(i);
+			if (node instanceof JResource) {
+				JResource resNode = (JResource) node;
+				try {
+					resNode.loadNode();
+				} catch (Exception e) {
+					e.printStackTrace();
+					return null;
+				}
+				ResourceFile file = resNode.getResFile();
+				if (file == null) {
+					ZipFile zip = getZipFile(resNode);
+					if (zip != null) {
+						return zip;
+					}
+				} else {
+					File zfile = file.getZipRef().getZipFile();
+					if (FileUtils.isZipFile(zfile)) {
+						try {
+							return new ZipFile(zfile);
+						} catch (IOException ignore) {
+						}
+					}
+				}
+			}
+		}
+		return null;
+	}
+
+	private void filter(JResource resNode, ZipFile zip) {
+		ResourceFile resFile = resNode.getResFile();
+		if (JResource.isSupportedForView(resFile.getType())) {
+			long size = -1;
+			if (zip != null) {
+				ZipEntry entry = zip.getEntry(resFile.getOriginalName());
+				if (entry != null) {
+					size = entry.getSize();
+				}
+			}
+			if (size == -1) { // resource from ARSC is unknown size
+				try {
+					size = resNode.getContent().length();
+				} catch (Exception ignore) {
+					return;
+				}
+			}
+			if (size <= sizeLimit) {
+				if (!anyExt) {
+					for (String ext : extSet) {
+						if (resFile.getOriginalName().endsWith(ext)) {
+							resNodes.add(resNode);
+							break;
+						}
+					}
+				} else {
+					resNodes.add(resNode);
+				}
+			}
+
+		}
+	}
+
+	private void refreshSettings() {
+		int size = cache.getJadxSettings().getSrhResourceSkipSize() * 10240;
+		if (size != sizeLimit
+				|| !cache.getJadxSettings().getSrhResourceFileExt().equals(fileExts)) {
+			clear();
+			sizeLimit = size;
+			fileExts = cache.getJadxSettings().getSrhResourceFileExt();
+			String[] exts = fileExts.split("\\|");
+			for (String ext : exts) {
+				ext = ext.trim();
+				if (!ext.isEmpty()) {
+					anyExt = ext.equals("*");
+					if (anyExt) {
+						break;
+					}
+					extSet.add(ext);
+				}
+			}
+			ZipFile zipFile = getZipFile(cache.getJRoot());
+			traverseTree(cache.getJRoot(), zipFile); // reindex
+			try {
+				if (zipFile != null) {
+					zipFile.close();
+				}
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
+		}
+	}
+}

jadx-gui/src/main/java/jadx/gui/utils/search/SimpleIndex.java

@@ -35,7 +35,7 @@ public class SimpleIndex {
 				}
 			}
 			emitter.onComplete();
-		}, BackpressureStrategy.LATEST);
+		}, BackpressureStrategy.BUFFER);
 	}
 
 	public int size() {

jadx-gui/src/main/java/jadx/gui/utils/search/TextSearchIndex.java

@@ -19,6 +19,7 @@ import jadx.core.codegen.CodeWriter;
 import jadx.gui.treemodel.CodeNode;
 import jadx.gui.treemodel.JNode;
 import jadx.gui.ui.SearchDialog;
+import jadx.gui.utils.CacheObject;
 import jadx.gui.utils.CodeLinesInfo;
 import jadx.gui.utils.JNodeCache;
 import jadx.gui.utils.UiUtils;
@@ -28,6 +29,7 @@ import static jadx.gui.ui.SearchDialog.SearchOptions.CODE;
 import static jadx.gui.ui.SearchDialog.SearchOptions.FIELD;
 import static jadx.gui.ui.SearchDialog.SearchOptions.IGNORE_CASE;
 import static jadx.gui.ui.SearchDialog.SearchOptions.METHOD;
+import static jadx.gui.ui.SearchDialog.SearchOptions.Resource;
 import static jadx.gui.ui.SearchDialog.SearchOptions.USE_REGEX;
 
 public class TextSearchIndex {
@@ -40,11 +42,13 @@ public class TextSearchIndex {
 	private final SimpleIndex mthSignaturesIndex;
 	private final SimpleIndex fldSignaturesIndex;
 	private final CodeIndex codeIndex;
+	private final ResourceIndex resIndex;
 
 	private final List<JavaClass> skippedClasses = new ArrayList<>();
 
-	public TextSearchIndex(JNodeCache nodeCache) {
-		this.nodeCache = nodeCache;
+	public TextSearchIndex(CacheObject cache) {
+		this.nodeCache = cache.getNodeCache();
+		this.resIndex = new ResourceIndex(cache);
 		this.clsNamesIndex = new SimpleIndex();
 		this.mthSignaturesIndex = new SimpleIndex();
 		this.fldSignaturesIndex = new SimpleIndex();
@@ -85,6 +89,10 @@ public class TextSearchIndex {
 		}
 	}
 
+	public void indexResource() {
+		resIndex.index();
+	}
+
 	public void remove(JavaClass cls) {
 		this.clsNamesIndex.removeForCls(cls);
 		this.mthSignaturesIndex.removeForCls(cls);
@@ -121,6 +129,9 @@ public class TextSearchIndex {
 				result = Flowable.concat(result, searchInSkippedClasses(searchSettings));
 			}
 		}
+		if (options.contains(Resource)) {
+			result = Flowable.concat(result, resIndex.search(searchSettings));
+		}
 		return result;
 	}
 
@@ -146,7 +157,7 @@ public class TextSearchIndex {
 			}
 			LOG.debug("Skipped code search complete: {}, memory usage: {}", searchSettings.getSearchString(), UiUtils.memoryInfo());
 			emitter.onComplete();
-		}, BackpressureStrategy.LATEST);
+		}, BackpressureStrategy.BUFFER);
 	}
 
 	private int searchNext(FlowableEmitter<CodeNode> emitter, JavaNode javaClass, String code, final SearchSettings searchSettings) {

jadx-gui/src/main/resources/i18n/Messages_de_DE.properties

@@ -77,6 +77,9 @@ search_dialog.info_label=Zeige Ergebnisse %1$d bis %2$d von %3$d
 search_dialog.col_node=Knoten
 search_dialog.col_code=Code
 search_dialog.regex=Regex
+#search_dialog.resource=
+#search_dialog.keep_open=
+#search_dialog.tip_searching=
 
 usage_dialog.title=Verwendungssuche
 usage_dialog.label=Verwendung für:
@@ -132,6 +135,9 @@ preferences.rename=Umbenennen
 preferences.rename_case=System unterscheidet zwischen Groß/Kleinschreibung
 preferences.rename_valid=Ist eine gültige Kennung
 preferences.rename_printable=Ist druckbar
+#preferences.search_res_title=
+#preferences.res_file_ext=
+#preferences.res_skip_file=
 
 msg.open_file=Bitte Datei öffnen
 msg.saving_sources=Quellen speichern…

jadx-gui/src/main/resources/i18n/Messages_en_US.properties

@@ -77,6 +77,9 @@ search_dialog.info_label=Showing results %1$d to %2$d of %3$d
 search_dialog.col_node=Node
 search_dialog.col_code=Code
 search_dialog.regex=Regex
+search_dialog.resource=Resource
+search_dialog.keep_open=Keep open
+search_dialog.tip_searching=Searching ...
 
 usage_dialog.title=Usage search
 usage_dialog.label=Usage for:
@@ -132,6 +135,9 @@ preferences.rename=Rename
 preferences.rename_case=System case sensitivity
 preferences.rename_valid=To be valid identifier
 preferences.rename_printable=To be printable
+preferences.search_res_title=Search Resource
+preferences.res_file_ext=File Extensions (e.g. .xml|.html), * means all
+preferences.res_skip_file=Skip files exceed (MB)
 
 msg.open_file=Please open file
 msg.saving_sources=Saving sources...

jadx-gui/src/main/resources/i18n/Messages_es_ES.properties

@@ -77,6 +77,9 @@ search_dialog.info_label=Mostrando resultados %1$d a %2$d de %3$d
 search_dialog.col_node=Nodo
 search_dialog.col_code=Código
 search_dialog.regex=Regex
+#search_dialog.resource=
+#search_dialog.keep_open=
+#search_dialog.tip_searching=
 
 usage_dialog.title=Usage search
 usage_dialog.label=Usage for:
@@ -132,6 +135,9 @@ preferences.reset_title=Reestablecer preferencias
 #preferences.rename_case=
 #preferences.rename_valid=
 #preferences.rename_printable=
+#preferences.search_res_title=
+#preferences.res_file_ext=
+#preferences.res_skip_file=
 
 msg.open_file=Por favor, abra un archivo
 msg.saving_sources=Guardando fuente...

jadx-gui/src/main/resources/i18n/Messages_ko_KR.properties

@@ -77,6 +77,9 @@ search_dialog.info_label=%3$d 중 %1$d-%2$d 결과 표시
 search_dialog.col_node=노드
 search_dialog.col_code=코드
 search_dialog.regex=정규식
+#search_dialog.resource=
+#search_dialog.keep_open=
+#search_dialog.tip_searching=
 
 usage_dialog.title=사용 검색
 usage_dialog.label=다음의 사용 검색 결과:
@@ -132,6 +135,9 @@ preferences.rename=이름 바꾸기
 preferences.rename_case=시스템 대소문자 구분
 preferences.rename_valid=유효한 식별자로 바꾸기
 preferences.rename_printable=출력 가능하게 바꾸기
+#preferences.search_res_title=
+#preferences.res_file_ext=
+#preferences.res_skip_file=
 
 msg.open_file=파일을 여십시오
 msg.saving_sources=소스 저장 중 ...

jadx-gui/src/main/resources/i18n/Messages_zh_CN.properties

@@ -77,6 +77,9 @@ search_dialog.info_label=显示了 %3$d 个结果中的第 %1$d 至第 %2$d 个
 search_dialog.col_node=节点
 search_dialog.col_code=代码
 search_dialog.regex=正则表达式
+#search_dialog.resource=
+#search_dialog.keep_open=
+#search_dialog.tip_searching=
 
 usage_dialog.title=查找
 usage_dialog.label=查找用例：
@@ -132,6 +135,9 @@ preferences.rename=重命名
 preferences.rename_case=系统区分大小写
 preferences.rename_valid=是有效的标识符
 preferences.rename_printable=是可打印
+#preferences.search_res_title=
+#preferences.res_file_ext=
+#preferences.res_skip_file=
 
 msg.open_file=请打开文件
 msg.saving_sources=正在导出源代码...