fix: filter invalid chars in app name for gradle export (PR #1813)

jadx-core/src/main/java/jadx/core/export/ExportGradleProject.java

@@ -6,6 +6,7 @@ import java.io.StringReader;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Set;
+import java.util.regex.Pattern;
 
 import javax.xml.parsers.DocumentBuilder;
 
@@ -29,6 +30,8 @@ public class ExportGradleProject {
 
 	private static final Logger LOG = LoggerFactory.getLogger(ExportGradleProject.class);
 
+	private static final Pattern ILLEGAL_GRADLE_CHARS = Pattern.compile("[/\\\\:>\"?*|]");
+
 	private static final Set<String> IGNORE_CLS_NAMES = new HashSet<>(Arrays.asList(
 			"R",
 			"BuildConfig"));
@@ -72,7 +75,7 @@ public class ExportGradleProject {
 	private void saveSettingsGradle() throws IOException {
 		TemplateFile tmpl = TemplateFile.fromResources("/export/settings.gradle.tmpl");
 
-		tmpl.add("applicationName", applicationParams.getApplicationName());
+		tmpl.add("applicationName", ILLEGAL_GRADLE_CHARS.matcher(applicationParams.getApplicationName()).replaceAll(""));
 		tmpl.save(new File(projectDir, "settings.gradle"));
 	}
 

jadx-core/src/test/java/jadx/tests/api/ExportGradleTest.java

@@ -67,4 +67,10 @@ public abstract class ExportGradleTest {
 		assertThat(appBuildGradle.exists());
 		return loadFileContent(appBuildGradle);
 	}
+
+	protected String getSettingsGradle() {
+		File settingsGradle = new File(exportDir, "settings.gradle");
+		assertThat(settingsGradle.exists());
+		return loadFileContent(settingsGradle);
+	}
 }

jadx-core/src/test/java/jadx/tests/export/IllegalCharsForGradleWrapper.java

@@ -0,0 +1,17 @@
+package jadx.tests.export;
+
+import org.junit.jupiter.api.Test;
+
+import jadx.tests.api.ExportGradleTest;
+
+import static jadx.tests.api.utils.assertj.JadxAssertions.assertThat;
+
+class IllegalCharsForGradleWrapper extends ExportGradleTest {
+
+	@Test
+	void test() {
+		exportGradle("IllegalCharsForGradleWrapper.xml", "strings.xml");
+
+		assertThat(getSettingsGradle()).contains("'JadxTestApp'");
+	}
+}

jadx-core/src/test/manifest/IllegalCharsForGradleWrapper.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" android:compileSdkVersion="33" android:compileSdkVersionCodename="13" package="jadx.test.app" platformBuildVersionCode="33" platformBuildVersionName="13">
+    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="32"/>
+    <application android:label="JadxTestApp/\:?*|">
+    </application>
+</manifest>