initial commit

Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "jsfuck"
+version = "0.1.0"

Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "jsfuck"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

src/foobar

@@ -0,0 +1 @@
+(+!![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![])[(!![] + [])[+[]] + ([][([][[]] + [])[+!![] + !![] + !![] + !![]] + (![] + [])[+!![] + !![]] + (![] + [])[+!![]] + (!![] + [])[+[]]] + [])[+!![] + !![] + !![] + !![] + !![] + !![]] + (([] + [])[([][([][[]] + [])[+!![] + !![] + !![] + !![]] + (![] + [])[+!![] + !![]] + (![] + [])[+!![]] + (!![] + [])[+[]]] + [])[+!![] + !![] + !![]] + ([][([][[]] + [])[+!![] + !![] + !![] + !![]] + (![] + [])[+!![] + !![]] + (![] + [])[+!![]] + (!![] + [])[+[]]] + [])[+!![] + !![] + !![] + !![] + !![] + !![]] + ([][[]] + [])[+!![]] + (![] + [])[+!![] + !![] + !![]] + (!![] + [])[+[]] + (!![] + [])[+!![]] + ([][[]] + [])[+[]] + ([][([][[]] + [])[+!![] + !![] + !![] + !![]] + (![] + [])[+!![] + !![]] + (![] + [])[+!![]] + (!![] + [])[+[]]] + [])[+!![] + !![] + !![]] + (!![] + [])[+[]] + ([][([][[]] + [])[+!![] + !![] + !![] + !![]] + (![] + [])[+!![] + !![]] + (![] + [])[+!![]] + (!![] + [])[+[]]] + [])[+!![] + !![] + !![] + !![] + !![] + !![]] + (!![] + [])[+!![]]] + [])]

src/main.rs

@@ -0,0 +1,136 @@
+#![warn(clippy::pedantic)]
+
+use std::io::{stdin, Read};
+
+fn main() {
+    let mut input = String::new();
+    stdin().read_to_string(&mut input).unwrap();
+
+    println!(
+        "{}({})()",
+        function_constructor(),
+        string_with_fromcodepoint(input.trim())
+    );
+}
+
+fn string_with_fromcodepoint(s: &str) -> String {
+    let mut out = String::new();
+    out.push_str(&function_constructor());
+    out.push('(');
+    out.push_str(&string("return String.fromCodePoint("));
+    for c in s.chars() {
+        out.push('+');
+        out.push_str(&string(&(c as u32).to_string()));
+        out.push('+');
+        out.push_str(&char(','));
+    }
+    out.push('+');
+    out.push_str(&char(')'));
+    out.push_str(")()");
+    out
+}
+
+fn regexp_constructor() -> String {
+    format!("{}({})()", function_constructor(), string("return RegExp"))
+}
+
+fn function_constructor() -> String {
+    format!("[][{}][{}]", string("flat"), string("constructor"))
+}
+
+fn string(s: &str) -> String {
+    s.chars().map(char).collect::<Vec<_>>().join("+")
+}
+
+fn char(c: char) -> String {
+    if c == ',' {
+        format!("([[]][{}]([[]])+[])", string("concat"))
+    } else if c.is_ascii() && c.is_numeric() {
+        format!("(({})+[])", number(c as usize - b'0' as usize))
+    } else if let Some(index) = "undefined".find(c) {
+        format!("([][[]]+[])[{}]", number(index))
+    } else if let Some(index) = "true".find(c) {
+        format!("(!![]+[])[{}]", number(index))
+    } else if let Some(index) = "false".find(c) {
+        format!("(![]+[])[{}]", number(index))
+    } else if let Some(index) = "function flat() {".find(c) {
+        format!("([][{}]+[])[{}]", string("flat"), number(index))
+    } else if let Some(index) = "[object Array Iterator]".find(c) {
+        format!("([][{}]()+[])[{}]", string("entries"), number(index))
+    } else if let Some(index) = "Number".find(c) {
+        format!(
+            "((+[])[{}]+[])[{}]",
+            string("constructor"),
+            number(index + 9)
+        )
+    } else if let Some(index) = "String".find(c) {
+        format!(
+            "(([]+[])[{}]+[])[{}]",
+            string("constructor"),
+            number(index + 9)
+        )
+    } else if let Some(index) = "Function".find(c) {
+        format!("({}+[])[{}]", function_constructor(), number(index + 9))
+    } else if c == '}' {
+        format!(
+            "([][{}]+[])[{}](-({}))",
+            string("flat"),
+            string("at"),
+            number(1)
+        )
+    } else if c == '.' {
+        format!("(+({})+[])[{}]", string("11e100"), number(1))
+    } else if c.is_ascii_lowercase() {
+        format!(
+            "({})[{}+(([]+[])[{}][{}])]({})",
+            number(c as usize - b'a' as usize + 10),
+            string("to"),
+            string("constructor"),
+            string("name"),
+            number(36)
+        )
+    } else if let Some(index) = "RangeError:".find(c) {
+        format!(
+            "({}({})()+[])[{}]",
+            function_constructor(),
+            string("try{String().normalize(false)}catch(f){return f}"),
+            number(index)
+        )
+    } else if let Some(index) = "/(?:)/".find(c) {
+        format!("({}()+[])[{}]", regexp_constructor(), number(index))
+    } else if c == '\\' {
+        format!(
+            "({}({})+[])[{}]",
+            regexp_constructor(),
+            string("/"),
+            number(1)
+        )
+    } else if c == '\'' {
+        format!(
+            "({}({})()+[])[{}]",
+            function_constructor(),
+            string("try{Function([[]].concat([[]]).toString())}catch(f){return f}"),
+            number(30)
+        )
+    } else {
+        let mut buf = [0; 2];
+        let buf = c.encode_utf16(&mut buf);
+        let s = buf
+            .iter()
+            .map(|v| format!("\\u{:04x}", v))
+            .collect::<String>();
+        format!(
+            "{}({})()",
+            function_constructor(),
+            string(&format!("return '{}'", s))
+        )
+    }
+}
+
+fn number(n: usize) -> String {
+    if n == 0 {
+        "+[]".to_owned()
+    } else {
+        "+!![]".repeat(n)
+    }
+}