feat: initial commit

.gitignore

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+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### IntelliJ IDEA ###
+.idea/
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
+
+obf-sample-test/
+dist/

LICENSE

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+MIT License
+
+Copyright (c) 2024 Matouš Kučera
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

LICENSE-JASM

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+The MIT License (MIT)
+
+Copyright (c) 2023-2024 Justus Garbe
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# jasm
+
+A JavaScript port of the [Jasm dis/assembler](https://github.com/jumanji144/Jasm).
+
+## Example
+
+```js
+const fs = require("fs");
+const { disassemble } = require("./jasm.js"); // get it from the dist/ directory or jsDelivr
+
+const data = fs.readFileSync("./your/package/HelloWorld.class"); // read a class file
+console.log(disassemble(data, {
+    indent: "    ", // the string that should be used as the indent, defaults to 4 spaces
+}));
+```
+
+Or see the browser-based proof-of-concept in the [docs](./docs) directory.
+
+## Licensing
+
+The supporting code for this project and the Jasm dis/assembler are licensed under the MIT License
+([supporting code](./LICENSE), [Jasm](./LICENSE-JASM)).
+
+_This project is not affiliated with, maintained or endorsed by the Jasm project in any way. Do NOT report issues with this project to the Jasm issue tracker._

build.gradle.kts

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+plugins {
+    `java-library`
+    alias(libs.plugins.teavm) // order matters?
+}
+
+val thisVersion = "0.1.0"
+
+group = "run.slicer"
+version = "$thisVersion-${libs.versions.jasm.get()}"
+description = "A JavaScript port of the Jasm dis/assembler."
+
+repositories {
+    mavenCentral()
+    maven("https://jitpack.io")
+}
+
+dependencies {
+    api(libs.jasm.composition.jvm)
+    implementation("org.ow2.asm:asm:+") // override transitive dep scope
+    compileOnly(libs.teavm.core)
+}
+
+java.toolchain {
+    languageVersion = JavaLanguageVersion.of(21)
+}
+
+teavm.js {
+    mainClass = "run.slicer.jasm.Main"
+    moduleType = org.teavm.gradle.api.JSModuleType.ES2015
+    // obfuscated = false
+    // optimization = org.teavm.gradle.api.OptimizationLevel.NONE
+}
+
+tasks {
+    register<Copy>("copyDist") {
+        group = "build"
+
+        from("README.md", "LICENSE", "LICENSE-JASM", generateJavaScript, "jasm.d.ts")
+        into("dist")
+
+        doLast {
+            file("dist/package.json").writeText(
+                """
+                    {
+                      "name": "@run-slicer/jasm",
+                      "version": "${project.version}",
+                      "description": "A JavaScript port of the Jasm dis/assembler (https://github.com/jumanji144/Jasm).",
+                      "main": "jasm.js",
+                      "types": "jasm.d.ts",
+                      "keywords": [
+                        "assembler",
+                        "disassembler",
+                        "java",
+                        "bytecode"
+                      ],
+                      "author": "run-slicer",
+                      "license": "MIT"
+                    }
+                """.trimIndent()
+            )
+        }
+    }
+
+    build {
+        dependsOn("copyDist")
+    }
+}

docs/index.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta content="width=device-width, initial-scale=1.0" name="viewport">
+    <title>Jasm in TeaVM</title>
+    <style>
+        @import url("https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&display=swap");
+
+        body {
+            margin: 0;
+            padding: 0;
+            font-family: "JetBrains Mono", monospace;
+            display: flex;
+            flex-direction: column;
+            align-items: center;
+            justify-content: center;
+            height: 100vh;
+            background-color: var(--bg-color);
+            color: var(--text-color);
+            transition: background-color 0.3s, color 0.3s;
+        }
+
+        :root {
+            --bg-color: #ffffff;
+            --text-color: #000000;
+        }
+
+        @media (prefers-color-scheme: dark) {
+            :root {
+                --bg-color: #1e1e1e;
+                --text-color: #cfcfcf;
+            }
+        }
+
+        #file-input {
+            margin-bottom: 20px;
+        }
+
+        #file-content {
+            width: 80%;
+            max-width: 1024px;
+            height: 60vh;
+            padding: 10px;
+            overflow-y: auto;
+            border: 1px solid var(--text-color);
+            border-radius: 5px;
+            background-color: var(--bg-color);
+            color: var(--text-color);
+            white-space: pre-wrap;
+        }
+    </style>
+</head>
+<body>
+    <input accept=".class" id="file-input" type="file">
+    <div id="file-content"></div>
+
+    <script type="module">
+        import { disassemble } from "https://cdn.jsdelivr.net/npm/@run-slicer/jasm/jasm.js";
+
+        const input = document.getElementById("file-input");
+        input.value = null; // clear file input
+        input.addEventListener("change", (e) => {
+            const file = e.target.files[0];
+            if (file) {
+                const reader = new FileReader();
+                reader.onload = (evt) => {
+                    const start = Date.now();
+                    console.log(`Disassembling ${file.name}...`);
+
+                    document.getElementById("file-content").textContent = disassemble(new Uint8Array(evt.target.result));
+
+                    console.log(`Disassembled ${file.name} in ${Date.now() - start}ms.`);
+                };
+
+                reader.readAsArrayBuffer(file);
+            }
+        });
+    </script>
+</body>
+</html>

gradle/libs.versions.toml

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+[versions]
+jasm = "2.5.0"
+teavm = "0.10.0"
+
+[libraries]
+jasm-composition-jvm = { group = "com.github.jumanji144.Jasm", name = "jasm-composition-jvm", version.ref = "jasm" }
+teavm-core = { group = "org.teavm", name = "teavm-core", version.ref = "teavm" }
+
+[plugins]
+teavm = { id = "org.teavm", version.ref = "teavm" }

gradle/wrapper/gradle-wrapper.properties

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+#Wed Jun 12 22:45:56 CEST 2024
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists