Add support for Windows.

build.gradle

@@ -23,7 +23,8 @@ clean {
 	delete = ['build']
 }
 dependencies {
-	implementation 'org.smali:baksmali:2.2.5'      // runtime dependency
-	testImplementation 'org.hamcrest:hamcrest:2.1' // test dependency
-	testImplementation 'junit:junit:4.12'          // test dependency
+	implementation 'org.smali:baksmali:2.2.5'      			// runtime dependency
+	testImplementation 'org.hamcrest:hamcrest:2.1' 			// test dependency
+	testImplementation 'junit:junit:4.12'          			// test dependency
+	implementation 'org.apache.commons:commons-lang3:3.11'	// used to determine OS
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,6 @@
+#Sun Sep 06 11:58:44 CAT 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.2.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.2.1-all.zip

src/main/java/com/alex_zaitsev/adg/FilterProvider.java

@@ -3,6 +3,8 @@
 import com.alex_zaitsev.adg.io.*;
 import com.alex_zaitsev.adg.filter.*;
 
+import org.apache.commons.lang3.SystemUtils;
+
 import java.io.File;
 import java.util.regex.Matcher;
 
@@ -17,21 +19,17 @@ public FilterProvider(Filters inputFilters) {
     public Filter<String> makePathFilter() {
         String replacement = Matcher.quoteReplacement(File.separator);
 	    replacement = Matcher.quoteReplacement(replacement);
-        String packageNameAsPath = inputFilters.getPackageName().replaceAll("\\.", replacement);
+
+	    // see https://github.com/alexzaitsev/apk-dependency-graph/issues/60
+        String packageNameAsPath = inputFilters.getPackageName().replaceAll(SystemUtils.IS_OS_WINDOWS ? "/" : "\\.", replacement);
         String packageNameRegex = ".*" + packageNameAsPath + ".*";
-        RegexFilter filter = new RegexFilter(packageNameRegex);
-
-        return filter;
+
+        return new RegexFilter(packageNameRegex);
     }
 
     public Filter<String> makeClassFilter() {
         String[] ignoredClasses = inputFilters.getIgnoredClasses();
-        if (ignoredClasses == null) {
-            return null;
-        }
-
-        InverseRegexFilter ignoredClassesFilter = new InverseRegexFilter(ignoredClasses);
 
-        return ignoredClassesFilter;
+        return ignoredClasses == null ? null : new InverseRegexFilter(ignoredClasses);
     }
 }

src/test/java/FilterProviderTests.java

@@ -36,7 +36,7 @@ public void makePathFilterReturnsExpectedFilter() {
         assertThat(filter, notNullValue());
         String filterStringRepr = File.separatorChar == '/' ?
             "RegexFilter{.*com/example/package.*}" : // for Unix
-            "RegexFilter{.*com\\\\example\\\\package.*}"; // for Windows
+            "RegexFilter{.*com.example.package.*}"; // for Windows
         assertThat(filter.toString(), equalTo(filterStringRepr));
     }