initial commit

.gitattributes

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+*                text=auto
+*.java           text
+*.kt             text
+*.json           text
+*.asar           -text

.gitignore

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+
+# Created by https://www.toptal.com/developers/gitignore/api/gradle
+# Edit at https://www.toptal.com/developers/gitignore?templates=gradle
+
+### Gradle ###
+.gradle
+build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar
+
+# Cache of project
+.gradletasknamecache
+
+# # Work around https://youtrack.jetbrains.com/issue/IDEA-116898
+# gradle/wrapper/gradle-wrapper.properties
+
+### Gradle Patch ###
+**/build/
+
+# End of https://www.toptal.com/developers/gitignore/api/gradle
+
+.idea

build.gradle.kts

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+plugins {
+    // for subproject configurations
+    java
+    `maven-publish`
+    signing
+}
+
+group = "com.anatawa12.asar4j"
+version = "1.0-SNAPSHOT"
+
+subprojects {
+    apply(plugin = "java")
+    apply(plugin = "maven-publish")
+    apply(plugin = "signing")
+
+    group = project(":").group
+    version = project(":").version
+
+    java {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+        withJavadocJar()
+        withSourcesJar()
+    }
+
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        testImplementation("org.apache.commons:commons-compress:1.20")
+        testImplementation("com.google.guava:guava:30.1.1-jre")
+        testImplementation("org.junit.jupiter:junit-jupiter-api:5.6.0")
+        testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine")
+    }
+
+    tasks.test {
+        useJUnitPlatform()
+    }
+
+    tasks.compileJava {
+        options.compilerArgs.add("-Xlint")
+    }
+}

common/build.gradle.kts

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+plugins {
+    java
+}

common/src/main/java/com/anatawa12/asar4j/AsarDirectoryEntry.java

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+package com.anatawa12.asar4j;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+class AsarDirectoryEntry extends AsarEntry {
+    // if java.util.HashMap, this is mutable.
+    // if not, this must be immutable.
+    private Map<String, AsarEntry> entries;
+
+    AsarDirectoryEntry(String name, Map<String, AsarEntry> files) {
+        super(name);
+        entries = files;
+    }
+
+    @Override
+    public AsarEntryType getType() {
+        return AsarEntryType.DIRECTORY;
+    }
+
+    @Override
+    public Collection<AsarEntry> getChildren() throws IllegalStateException {
+        return Collections.unmodifiableCollection(entries.values());
+    }
+
+    @Override
+    public AsarEntry getChild(String name) throws IllegalStateException {
+        return entries.get(name);
+    }
+
+    @Override
+    public boolean isExecutable() {
+        throw new IllegalStateException("this is not FILE, but DIRECTORY");
+    }
+
+    @Override
+    public void setExecutable(boolean executable) {
+        throw new IllegalStateException("this is not FILE, but DIRECTORY");
+    }
+
+    void addChild(AsarEntry child) {
+        if (!child.getName().startsWith(getName())
+                || child.getName().length() == getName().length()
+                || child.getName().charAt(child.getName().length() - 1) != '/')
+            throw new IllegalArgumentException("the entry is not descendants of this");
+        String name = child.getName().substring(getName().length() + 1);
+        if (name.contains("/"))
+            throw new IllegalArgumentException("the entry is grandchildren");
+        entries.put(name, child);
+    }
+
+    @Override
+    protected AsarDirectoryEntry clone() {
+        AsarDirectoryEntry entry = (AsarDirectoryEntry) super.clone();
+        if (entries instanceof HashMap<?, ?>) {
+            entry.entries = new HashMap<>(entries);
+        }
+        return entry;
+    }
+}