├── .gitignore ├── README.md ├── examples ├── wasm-rust-calling-from-js │ ├── Cargo.toml │ ├── Makefile │ ├── site │ │ ├── index.html │ │ ├── site.js │ │ └── site.wasm │ ├── src │ │ └── main.rs │ └── target │ │ ├── release │ │ └── .cargo-lock │ │ └── wasm32-unknown-emscripten │ │ └── release │ │ ├── .cargo-lock │ │ ├── .fingerprint │ │ └── wasm-rust-calling-from-js-85f8b9fee11f6047 │ │ │ ├── bin-wasm-rust-calling-from-js │ │ │ ├── bin-wasm-rust-calling-from-js.json │ │ │ └── dep-bin-wasm-rust-calling-from-js │ │ ├── deps │ │ ├── wasm-rust-calling-from-js.js │ │ └── wasm_rust_calling_from_js.wasm │ │ ├── wasm-rust-calling-from-js.d │ │ ├── wasm-rust-calling-from-js.js │ │ ├── wasm_rust_calling_from_js.d │ │ └── wasm_rust_calling_from_js.wasm └── wasm-rust │ ├── Cargo.lock │ ├── Cargo.toml │ ├── Makefile │ ├── site │ ├── index.html │ ├── site.js │ └── site.wasm │ ├── src │ └── main.rs │ └── target │ ├── debug │ ├── .cargo-lock │ ├── .fingerprint │ │ └── wasm-rust-34c6ef5f29bee9df │ │ │ ├── bin-wasm_rust-34c6ef5f29bee9df │ │ │ ├── bin-wasm_rust-34c6ef5f29bee9df.json │ │ │ └── dep-bin-wasm_rust-34c6ef5f29bee9df │ ├── deps │ │ ├── wasm_rust-34c6ef5f29bee9df │ │ └── wasm_rust-34c6ef5f29bee9df.dSYM │ │ │ └── Contents │ │ │ ├── Info.plist │ │ │ └── Resources │ │ │ └── DWARF │ │ │ └── wasm_rust-34c6ef5f29bee9df │ ├── wasm-rust │ ├── wasm-rust.d │ └── wasm-rust.dSYM │ ├── release │ └── .cargo-lock │ └── wasm32-unknown-emscripten │ └── release │ ├── .cargo-lock │ ├── .fingerprint │ └── wasm-rust-934a2362e0859596 │ │ ├── bin-wasm-rust │ │ ├── bin-wasm-rust.json │ │ └── dep-bin-wasm-rust │ ├── deps │ ├── wasm-rust.js │ └── wasm_rust.wasm │ ├── wasm-rust.d │ ├── wasm-rust.js │ ├── wasm_rust.d │ └── wasm_rust.wasm └── resources ├── love-gif.gif ├── rustacean.png ├── wasm-rust-called-from-js-chrome.png ├── wasm-rust-chrome.png └── wasm.png /.gitignore: -------------------------------------------------------------------------------- 1 | .DS_Store 2 | 3 | Cargo.lock 4 | 5 | # These are backup files generated by rustfmt 6 | **/*.rs.bk 7 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 |

WebAssembly and Rust

2 |

~ A Web Love Story ~

3 | 4 |

5 | 6 | love gif 7 | Rustacean 8 |

9 | 10 | 11 | ## Before Start 12 | 13 | - Basic knowledge of HTML and JavaScript 14 | - Enthusiasm for going fast on the web 15 | - Your favourite browser that supports Web Assembly 16 | 17 | You can check out `about:config` (Firefox) or `chrome://flags/` (Chrome) and make sure `wasm` related things are enabled. 18 | 19 | ## WebAssembly (WASM) 20 | 21 | WebAssembly or WASM is a low-level bytecode format for in-browser client-side scripting, evolved from JavaScript. Its initial aim is to support compilation from C and C++, though other source languages such as [Rust](https://www.rust-lang.org/en-US/) are also supported. 22 | 23 | Initial implementation of WebAssembly support in browsers will be based on the featureset of [asm.js](http://asmjs.org/). 24 | 25 | The asm.js is an intermediate programming language designed to allow computer software written in languages such as C to be run as web applications while maintaining performance characteristics considerably better than standard JavaScript, the typical language used for such applications. Consists of a strict subset of JavaScript, into which code written in statically-typed languages with manual memory management (such as C) is translated by a source-to-source compiler such as Emscripten (based on LLVM). 26 | 27 | Performance is improved by limiting language features to those amenable to ahead-of-time optimization and other performance improvements. 28 | 29 | #### Code generation based on asm.js 30 | 31 | Calculate the length of a string in C: 32 | 33 | ```c 34 | size_t strlen(char *ptr) { 35 | char *curr = ptr; 36 | while (*curr != 0) { 37 | curr++; 38 | } 39 | return (curr - ptr); 40 | } 41 | ``` 42 | 43 | Would output the following JS code: 44 | 45 | ```js 46 | function strlen(ptr) { 47 | ptr = ptr|0; 48 | var curr = 0; 49 | curr = ptr; 50 | while (MEM8[curr]|0 != 0) { 51 | curr = (curr + 1)|0; 52 | } 53 | return (curr - ptr)|0; 54 | } 55 | ``` 56 | 57 | **Note:** Much of performance gain over normal JavaScript is due to 100% type consistency and virtually no garbage collection (memory is manually managed in a large typed array). 58 | 59 | In March 2017, the WebAssembly Community Group reached consensus on the initial (MVP) binary format, JavaScript API, and reference interpreter. It defines a WebAssembly binary format. 60 | 61 | See the representation of 3 different views of the same source code: 62 | 63 | #### C (Input Source) 64 | 65 | ```c 66 | int factorial(int n) { 67 | if (n == 0) 68 | return 1; 69 | else 70 | return n * factorial(n-1); 71 | } 72 | ``` 73 | 74 | #### Linear Assembly Bytecode ([IR](https://en.wikipedia.org/wiki/Intermediate_representation)) 75 | 76 | Data structure used internally by wasm compiler to represent source code. 77 | 78 | ``` 79 | get_local 0 80 | i64.eqz 81 | if i64 82 | i64.const 1 83 | else 84 | get_local 0 85 | get_local 0 86 | i64.const 1 87 | i64.sub 88 | call 0 89 | i64.mul 90 | end 91 | ``` 92 | 93 | #### WASM binary encoding 94 | 95 | In hexadecimal: 96 | 97 | ``` 98 | 20 00 99 | 50 100 | 04 7E 101 | 42 01 102 | 05 103 | 20 00 104 | 20 00 105 | 42 01 106 | 7D 107 | 10 00 108 | 7E 109 | 0B 110 | ``` 111 | 112 | The WASM compiler system internally uses [s-expressions](https://en.wikipedia.org/wiki/S-expression) - notation for nested list (tree-structured) data, invented for and popularized by the programming language [Lisp](https://en.wikipedia.org/wiki/Lisp_(programming_language)), which uses them for source code as well as data - for parsing simplicity as well to handle intermediate code. 113 | 114 | An example is shown below: 115 | 116 | ```lisp 117 | (module 118 | (type $FUNCSIG$dd (func (param f64) (result f64))) 119 | (import "global.Math" "exp" (func $exp (param f64) (result f64))) 120 | (memory 256 256) 121 | (export "memory" (memory 0)) 122 | (func $doubleExp (param $0 f64) (result f64) 123 | (f64.mul 124 | (call $exp 125 | (get_local $0) 126 | ) 127 | (f64.const 2) 128 | ) 129 | ) 130 | (export "doubleExp" (func $doubleExp)) 131 | ) 132 | ``` 133 | 134 | #### Emscripten 135 | 136 | Emscripten is an LLVM-based project that compiles C and C++ into highly-optimizable JavaScript in asm.js format. This lets you run C and C++ on the web at near-native speed, without plugins. 137 | 138 | Thanks to LLVM, Emscripten and asm.js, code runs at near-native speed. 139 | 140 | ## Rust Language 141 | 142 | Rust is a systems programming language sponsored by Mozilla Research, which describes it as a "safe, concurrent, practical language," supporting functional and imperative-procedural paradigms. Rust is syntactically similar to C++, but its designers intend it to provide better memory safety while maintaining performance. 143 | 144 | Rust is an open source programming language. Its designers have refined the language through the experiences of writing the Servo web browser layout engine and the Rust compiler. 145 | 146 | Featuring: zero-cost abstractions, move semantics, guaranteed memory safety, threads without data races, trait-based generics, pattern matching, type inference, minimal runtime and efficient C bindings. 147 | 148 | Some code in Rust: 149 | 150 | ```rust 151 | fn main() { 152 | let greetings = ["Hello", "Hola", "Bonjour", 153 | "Ciao", "こんにちは", "안녕하세요", 154 | "Cześć", "Olá", "Здравствуйте", 155 | "Chào bạn", "您好", "Hallo", 156 | "Hej"]; 157 | 158 | for (num, greeting) in greetings.iter().enumerate() { 159 | print!("{} : ", greeting); 160 | match num { 161 | 0 => println!("This code is editable and runnable!"), 162 | 1 => println!("¡Este código es editable y ejecutable!"), 163 | 2 => println!("Ce code est modifiable et exécutable !"), 164 | 3 => println!("Questo codice è modificabile ed eseguibile!"), 165 | 4 => println!("このコードは編集して実行出来ます！"), 166 | 5 => println!("여기에서 코드를 수정하고 실행할 수 있습니다!"), 167 | 6 => println!("Ten kod można edytować oraz uruchomić!"), 168 | 7 => println!("Este código é editável e executável!"), 169 | 8 => println!("Этот код можно отредактировать и запустить!"), 170 | 9 => println!("Bạn có thể edit và run code trực tiếp!"), 171 | 10 => println!("这段代码是可以编辑并且能够运行的！"), 172 | 11 => println!("Dieser Code kann bearbeitet und ausgeführt werden!"), 173 | 12 => println!("Den här koden kan redigeras och köras!"), 174 | _ => {}, 175 | } 176 | } 177 | } 178 | ``` 179 | 180 | Other code written in Rust (example of [Array and Slices](https://doc.rust-lang.org/stable/rust-by-example/primitives/array.html)): 181 | 182 | ```rust 183 | use std::mem; 184 | 185 | // This function borrows a slice 186 | fn analyze_slice(slice: &[i32]) { 187 | println!("first element of the slice: {}", slice[0]); 188 | println!("the slice has {} elements", slice.len()); 189 | } 190 | 191 | fn main() { 192 | // Fixed-size array (type signature is superfluous) 193 | let xs: [i32; 5] = [1, 2, 3, 4, 5]; 194 | 195 | // All elements can be initialized to the same value 196 | let ys: [i32; 500] = [0; 500]; 197 | 198 | // Indexing starts at 0 199 | println!("first element of the array: {}", xs[0]); 200 | println!("second element of the array: {}", xs[1]); 201 | 202 | // `len` returns the size of the array 203 | println!("array size: {}", xs.len()); 204 | 205 | // Arrays are stack allocated 206 | println!("array occupies {} bytes", mem::size_of_val(&xs)); 207 | 208 | // Arrays can be automatically borrowed as slices 209 | println!("borrow the whole array as a slice"); 210 | analyze_slice(&xs); 211 | 212 | // Slices can point to a section of an array 213 | println!("borrow a section of the array as a slice"); 214 | analyze_slice(&ys[1 .. 4]); 215 | 216 | // Out of bound indexing yields a panic 217 | println!("{}", xs[5]); 218 | } 219 | ``` 220 | 221 | If're not familiar with almost none of this code. I extremally recommend you to stop few minutes on [Rust by Example](https://doc.rust-lang.org/stable/rust-by-example/hello.html). 222 | 223 | ## Why it Right Now? 224 | 225 | JavaScript was created in 1995. It wasn’t designed to be fast, and for the first decade, it wasn’t fast. Then the browsers started getting more competitive. 226 | 227 | In 2008, a period that people call the performance wars began. Multiple browsers added just-in-time compilers, also called JITs. As JavaScript was running, the JIT could see patterns and make the code run faster based on those patterns. 228 | 229 | The introduction of these JITs led to an inflection point in the performance of JavaScript. Execution of JS was 10x faster. 230 | 231 | With this improved performance, JavaScript started being used for things no one ever expected it to be used for, like server-side programming with Node.js. **The performance improvement made it feasible to use JavaScript on a whole new class of problems**. 232 | 233 | We may be at another one of those inflection points now, with WebAssembly. 234 | 235 | - Retired from "[A Cartoon Intro To Webassembly, Lin Clark](https://hacks.mozilla.org/2017/02/a-cartoon-intro-to-webassembly/)" 236 | 237 | ## Installing 238 | 239 | 1. Setup rustup 240 | 241 | Rustup is an official Rust project that allows us to install, manage, and update multiple Rust toolchains. 242 | 243 | ```shell 244 | curl https://sh.rustup.rs -sSf | sh 245 | ``` 246 | 247 | After we’ll be prompted to run the following command to update the current shell with the changes: 248 | 249 | ```shell 250 | source $HOME/.cargo/env 251 | ``` 252 | 253 | Add the wasm32-unknown-emscripten compile target via rustup as well: 254 | 255 | ```shell 256 | rustup target add wasm32-unknown-emscripten 257 | ``` 258 | 259 | Set up Emscripten via emsdk. We’ll use the incoming version of Emscripten in order to get the best output. 260 | 261 | ```shell 262 | # Make sure to have cmake installed before running this: 263 | # - Ubuntu/Debian: apt install cmake 264 | # - MacOS X : brew install cmake 265 | curl https://s3.amazonaws.com/mozilla-games/emscripten/releases/emsdk-portable.tar.gz | tar -zxv -C ~/ 266 | cd ~/emsdk-portable 267 | ./emsdk update 268 | ./emsdk install sdk-incoming-64bit 269 | ./emsdk activate sdk-incoming-64bit 270 | ``` 271 | 272 | Emscripten is installed. 273 | 274 | The last command will instruct us how to add the binaries to our path for permanent usage, or we can just source `./emsdk_env.sh` for temporary fun. 275 | 276 | ```shell 277 | $ emcc -v 278 | emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 1.37.22 279 | clang version 4.0.0 (https://github.com/kripken/emscripten-fastcomp-clang.git 3659f873b523e5fc89ffa16baab8901fbd084251) (https://github.com/kripken/emscripten-fastcomp.git de9659961c692174fc4651a6ea0720236e4c4739) (emscripten 1.37.22 : 1.37.22) 280 | Target: x86_64-apple-darwin17.2.0 281 | Thread model: posix 282 | InstalledDir: /Users/raphael.amorim/emsdk-portable/clang/fastcomp/build_incoming_64/bin 283 | INFO:root:(Emscripten: Running sanity checks) 284 | ``` 285 | 286 | Let’s create the project. 287 | 288 | ``` 289 | cargo init wasm-demo --bin && rustup override set nightly 290 | ``` 291 | 292 | Put our first code sample into `src/main.rs`: 293 | 294 | ```rust 295 | #[derive(Debug)] 296 | enum Direction { North, South, East, West } 297 | 298 | fn is_north(dir: Direction) -> bool { 299 | match dir { 300 | Direction::North => true, 301 | _ => false, 302 | } 303 | } 304 | 305 | fn main() { 306 | let points = Direction::South; 307 | println!("{:?}", points); 308 | let compass = is_north(points); 309 | println!("{}", compass); 310 | } 311 | ``` 312 | 313 | Run it to see what happens: 314 | 315 | ```shell 316 | $ cargo run 317 | Compiling wasm-rust v0.1.0 (file:///Users/raphael.amorim/Documents/gcom/webassembly-and-rust/examples/wasm-rust) 318 | Finished dev [unoptimized + debuginfo] target(s) in 0.66 secs 319 | Running `target/debug/wasm-rust` 320 | South 321 | false 322 | ``` 323 | 324 | Let's build for browsers: 325 | 326 | ```shell 327 | cargo build --target=wasm32-unknown-emscripten --release 328 | ``` 329 | 330 | Run `tree` on target folder: 331 | 332 | ```shell 333 | $ tree target 334 | target 335 | ├── debug 336 | │ ├── build 337 | │ ├── deps 338 | │ │ ├── wasm_rust-34c6ef5f29bee9df 339 | │ │ └── wasm_rust-34c6ef5f29bee9df.dSYM 340 | │ │ └── Contents 341 | │ │ ├── Info.plist 342 | │ │ └── Resources 343 | │ │ └── DWARF 344 | │ │ └── wasm_rust-34c6ef5f29bee9df 345 | │ ├── examples 346 | │ ├── incremental 347 | │ ├── native 348 | │ ├── wasm-rust 349 | │ ├── wasm-rust.d 350 | │ └── wasm-rust.dSYM -> /Users/raphael.amorim/Documents/gcom/webassembly-and-rust/examples/wasm-rust/target/debug/deps/wasm_rust-34c6ef5f29bee9df.dSYM 351 | ├── release 352 | │ ├── build 353 | │ ├── deps 354 | │ ├── examples 355 | │ ├── incremental 356 | │ └── native 357 | └── wasm32-unknown-emscripten 358 | └── release 359 | ├── build 360 | ├── deps 361 | │ ├── wasm-rust.js 362 | │ └── wasm_rust.wasm 363 | ├── examples 364 | ├── incremental 365 | ├── native 366 | ├── wasm-rust.d 367 | ├── wasm-rust.js 368 | ├── wasm_rust.d 369 | └── wasm_rust.wasm 370 | ``` 371 | 372 | cargo created several files in `target/wasm32-unknown-emscripten/release/deps/` for us. Of primary interest are the `.wasm` and `.js` files. 373 | 374 | Why do we get both a `wasm` and a `js`? Wasn’t the whole point of this to not use Javascript? Turns out we need some Javascript glue code to fetch, initialize, and configure it. 375 | 376 | Create a `site/index.html` with the following content: 377 | 378 | ```html 379 | 380 | 381 | 382 | 383 | Wasm/Rust 384 | 390 | 391 | 392 | 393 | 394 | ``` 395 | 396 | Let's automatize it with `Makefile`, set up some way to get the generated files from the `target/` folder into the `site/` folder (* use `tabs`): 397 | 398 | ```Makefile 399 | SHELL := /bin/bash 400 | 401 | all: 402 | cargo build --target=wasm32-unknown-emscripten --release 403 | mkdir -p site 404 | find target/wasm32-unknown-emscripten/release/deps -type f -name "*.wasm" | xargs -I {} cp {} site/wasm_demo.wasm 405 | find target/wasm32-unknown-emscripten/release/deps -type f ! -name "*.asm.js" -name "*.js" | xargs -I {} cp {} site/site.js 406 | ``` 407 | 408 | Run `make` and see the tree: 409 | 410 | ```shell 411 | $ tree site 412 | site 413 | ├── index.html 414 | ├── site.js 415 | └── wasm_demo.wasm 416 | ``` 417 | 418 | Let’s test our generated code by running `python -m SimpleHTTPServer`, browsing to `http://localhost:8000/site/`, and opening the browser console. 419 | 420 | ![Example Wasm](resources/wasm-rust-chrome.png) 421 | 422 | ## Wasm and Rust Called from Javascript 423 | 424 | [Link to example](examples/wasm-rust-calling-from-js) 425 | 426 | **src/main.rs** 427 | 428 | ```rust 429 | use std::os::raw::c_char; 430 | use std::ffi::CString; 431 | use std::collections::HashMap; 432 | 433 | #[no_mangle] 434 | pub fn get_data() -> *mut c_char { 435 | let mut data = HashMap::new(); 436 | data.insert("Alice", "send"); 437 | data.insert("Bob", "recieve"); 438 | data.insert("Carol", "intercept"); 439 | 440 | let descriptions = data.iter() 441 | .map(|(p,a)| format!("{} likes to {} messages", p, a)) 442 | .collect::>(); 443 | 444 | CString::new(descriptions.join(", ")) 445 | .unwrap() 446 | .into_raw() 447 | } 448 | 449 | fn main() { 450 | // Deliberately blank. 451 | } 452 | ``` 453 | 454 | In Client-side: 455 | 456 | ```javascript 457 | var Module = { 458 | wasmBinaryFile: "site.wasm", 459 | onRuntimeInitialized: main, 460 | }; 461 | function main() { 462 | var getData = Module.cwrap('get_data', 'string', []); 463 | console.log(getData()); 464 | }; 465 | ``` 466 | 467 | ![Example](resources/wasm-rust-called-from-js-chrome.png) 468 | 469 | ## Credits 470 | 471 | Thanks to [hoverbear](http://hoverbear.org) by examples and Rust/Wasm setup guide. 472 | 473 | ## References 474 | 475 | - https://en.wikipedia.org/wiki/WebAssembly 476 | - https://en.wikipedia.org/wiki/Rust_(programming_language) 477 | - https://hoverbear.org/2017/04/06/the-path-to-rust-on-the-web/ 478 | - http://cultureofdevelopment.com/blog/build-your-first-thing-with-web-assembly/ 479 | - https://github.com/mbasso/awesome-wasm 480 | - https://hacks.mozilla.org/2017/02/a-cartoon-intro-to-webassembly/ 481 | - https://codelabs.developers.google.com/codelabs/web-assembly-intro/index.html?index=..%2F..%2Findex#0 482 | - https://github.com/mrfr0g/rust-webassembly 483 | - https://internals.rust-lang.org/t/state-of-webassembly-and-rust/6077 484 | - https://www.rust-lang.org/en-US/ 485 | - https://hacks.mozilla.org/2017/02/a-crash-course-in-assembly/ 486 | - https://www.hellorust.com/emscripten/slides/rbr-talk/ 487 | - https://hoverbear.org/2017/03/03/setting-up-a-rust-devenv/#setting-up-rust-via-rustup 488 | S 489 | -------------------------------------------------------------------------------- /examples/wasm-rust-calling-from-js/Cargo.toml: -------------------------------------------------------------------------------- 1 | [package] 2 | name = "wasm-rust-calling-from-js" 3 | version = "0.1.0" 4 | authors = ["Raphael Amorim "] 5 | 6 | [dependencies] 7 | -------------------------------------------------------------------------------- /examples/wasm-rust-calling-from-js/Makefile: -------------------------------------------------------------------------------- 1 | SHELL := /bin/bash 2 | 3 | all: 4 | cargo build --target=wasm32-unknown-emscripten --release 5 | mkdir -p site 6 | find target/wasm32-unknown-emscripten/release/deps -type f -name "*.wasm" | xargs -I {} cp {} site/site.wasm 7 | find target/wasm32-unknown-emscripten/release/deps -type f ! -name "*.asm.js" -name "*.js" | xargs -I {} cp {} site/site.js 8 | python -m SimpleHTTPServer 9 | -------------------------------------------------------------------------------- /examples/wasm-rust-calling-from-js/site/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Wasm/Rust calling from JavaScript 6 | 17 | 18 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /examples/wasm-rust-calling-from-js/site/site.wasm: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/raphamorim/wasm-and-rust/0489b9a77f4add18cd86a4222338652097e84390/examples/wasm-rust-calling-from-js/site/site.wasm -------------------------------------------------------------------------------- /examples/wasm-rust-calling-from-js/src/main.rs: -------------------------------------------------------------------------------- 1 | use std::os::raw::c_char; 2 | use std::ffi::CString; 3 | use std::collections::HashMap; 4 | 5 | #[no_mangle] 6 | pub fn get_data() -> *mut c_char { 7 | let mut data = HashMap::new(); 8 | data.insert("Alice", "send"); 9 | data.insert("Bob", "recieve"); 10 | data.insert("Carol", "intercept"); 11 | 12 | let descriptions = data.iter() 13 | .map(|(p,a)| format!("{} likes to {} messages", p, a)) 14 | .collect::>(); 15 | 16 | CString::new(descriptions.join(", ")) 17 | .unwrap() 18 | .into_raw() 19 | } 20 | 21 | fn main() { 22 | // Deliberately blank. 23 | } 24 | 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src/main.rs 2 | 3 | /Users/raphael.amorim/Documents/gcom/webassembly-and-rust/examples/wasm-rust-calling-from-js/target/wasm32-unknown-emscripten/release/deps/wasm_rust_calling_from_js.d: src/main.rs 4 | 5 | src/main.rs: 6 | -------------------------------------------------------------------------------- /examples/wasm-rust-calling-from-js/target/wasm32-unknown-emscripten/release/deps/wasm_rust_calling_from_js.wasm: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/raphamorim/wasm-and-rust/0489b9a77f4add18cd86a4222338652097e84390/examples/wasm-rust-calling-from-js/target/wasm32-unknown-emscripten/release/deps/wasm_rust_calling_from_js.wasm -------------------------------------------------------------------------------- /examples/wasm-rust-calling-from-js/target/wasm32-unknown-emscripten/release/wasm-rust-calling-from-js.d: -------------------------------------------------------------------------------- 1 | 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/examples/wasm-rust-calling-from-js/target/wasm32-unknown-emscripten/release/wasm_rust_calling_from_js.wasm: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/raphamorim/wasm-and-rust/0489b9a77f4add18cd86a4222338652097e84390/examples/wasm-rust-calling-from-js/target/wasm32-unknown-emscripten/release/wasm_rust_calling_from_js.wasm -------------------------------------------------------------------------------- /examples/wasm-rust/Cargo.lock: -------------------------------------------------------------------------------- 1 | [[package]] 2 | name = "wasm-rust" 3 | version = "0.1.0" 4 | 5 | -------------------------------------------------------------------------------- /examples/wasm-rust/Cargo.toml: -------------------------------------------------------------------------------- 1 | [package] 2 | name = "wasm-rust" 3 | version = "0.1.0" 4 | authors = ["Raphael Amorim "] 5 | 6 | [dependencies] 7 | -------------------------------------------------------------------------------- /examples/wasm-rust/Makefile: -------------------------------------------------------------------------------- 1 | SHELL := /bin/bash 2 | 3 | all: 4 | cargo build --target=wasm32-unknown-emscripten --release 5 | mkdir -p site 6 | find target/wasm32-unknown-emscripten/release/deps -type f -name "*.wasm" | xargs -I {} cp {} site/site.wasm 7 | find target/wasm32-unknown-emscripten/release/deps -type f ! -name "*.asm.js" -name "*.js" | xargs -I {} cp {} site/site.js 8 | -------------------------------------------------------------------------------- /examples/wasm-rust/site/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Wasm/Rust 6 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /examples/wasm-rust/site/site.js: 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removeRunDependency(id){runDependencies--;if(Module["monitorRunDependencies"]){Module["monitorRunDependencies"](runDependencies)}if(runDependencies==0){if(runDependencyWatcher!==null){clearInterval(runDependencyWatcher);runDependencyWatcher=null}if(dependenciesFulfilled){var callback=dependenciesFulfilled;dependenciesFulfilled=null;callback()}}}Module["removeRunDependency"]=removeRunDependency;Module["preloadedImages"]={};Module["preloadedAudios"]={};var memoryInitializer=null;function integrateWasmJS(){var method=Module["wasmJSMethod"]||"native-wasm";Module["wasmJSMethod"]=method;var wasmTextFile=Module["wasmTextFile"]||"wasm_rust.wast";var wasmBinaryFile=Module["wasmBinaryFile"]||"wasm_rust.wasm";var asmjsCodeFile=Module["asmjsCodeFile"]||"wasm_rust.temp.asm.js";if(typeof Module["locateFile"]==="function"){wasmTextFile=Module["locateFile"](wasmTextFile);wasmBinaryFile=Module["locateFile"](wasmBinaryFile);asmjsCodeFile=Module["locateFile"](asmjsCodeFile)}var wasmPageSize=64*1024;var asm2wasmImports={"f64-rem":(function(x,y){return x%y}),"f64-to-int":(function(x){return x|0}),"i32s-div":(function(x,y){return(x|0)/(y|0)|0}),"i32u-div":(function(x,y){return(x>>>0)/(y>>>0)>>>0}),"i32s-rem":(function(x,y){return(x|0)%(y|0)|0}),"i32u-rem":(function(x,y){return(x>>>0)%(y>>>0)>>>0}),"debugger":(function(){debugger})};var info={"global":null,"env":null,"asm2wasm":asm2wasmImports,"parent":Module};var exports=null;function lookupImport(mod,base){var lookup=info;if(mod.indexOf(".")<0){lookup=(lookup||{})[mod]}else{var parts=mod.split(".");lookup=(lookup||{})[parts[0]];lookup=(lookup||{})[parts[1]]}if(base){lookup=(lookup||{})[base]}if(lookup===undefined){abort("bad lookupImport to ("+mod+")."+base)}return lookup}function mergeMemory(newBuffer){var oldBuffer=Module["buffer"];if(newBuffer.byteLength=0)stack_args=__emscripten_traverse_stack(stack_args[0])}var lines=callstack.split("\n");callstack="";var newFirefoxRe=new RegExp("\\s*(.*?)@(.*?):([0-9]+):([0-9]+)");var firefoxRe=new RegExp("\\s*(.*?)@(.*):(.*)(:(.*))?");var chromeRe=new RegExp("\\s*at (.*?) \$(.*):(.*):(.*)\$");for(var l in lines){var line=lines[l];var jsSymbolName="";var file="";var lineno=0;var column=0;var parts=chromeRe.exec(line);if(parts&&parts.length==5){jsSymbolName=parts[1];file=parts[2];lineno=parts[3];column=parts[4]}else{parts=newFirefoxRe.exec(line);if(!parts)parts=firefoxRe.exec(line);if(parts&&parts.length>=4){jsSymbolName=parts[1];file=parts[2];lineno=parts[3];column=parts[4]|0}else{callstack+=line+"\n";continue}}var cSymbolName=flags&32?demangle(jsSymbolName):jsSymbolName;if(!cSymbolName){cSymbolName=jsSymbolName}var haveSourceMap=false;if(flags&8){var orig=emscripten_source_map.originalPositionFor({line:lineno,column:column});haveSourceMap=orig&&orig.source;if(haveSourceMap){if(flags&64){orig.source=orig.source.substring(orig.source.replace(/\\/g,"/").lastIndexOf("/")+1)}callstack+=" at "+cSymbolName+" ("+orig.source+":"+orig.line+":"+orig.column+")\n"}}if(flags&16||!haveSourceMap){if(flags&64){file=file.substring(file.replace(/\\/g,"/").lastIndexOf("/")+1)}callstack+=(haveSourceMap?" = "+jsSymbolName:" at "+cSymbolName)+" ("+file+":"+lineno+":"+column+")\n"}if(flags&128&&stack_args[0]){if(stack_args[1]==jsSymbolName&&stack_args[2].length>0){callstack=callstack.replace(/\s+$/,"");callstack+=" with values: "+stack_args[1]+stack_args[2]+"\n"}stack_args=__emscripten_traverse_stack(stack_args[0])}}callstack=callstack.replace(/\s+$/,"");return callstack}function __Unwind_Backtrace(func,arg){var trace=_emscripten_get_callstack_js();var parts=trace.split("\n");for(var i=0;i0);info.refcount--;if(info.refcount===0&&!info.rethrown){if(info.destructor){Module["dynCall_vi"](info.destructor,ptr)}delete EXCEPTIONS.infos[ptr];___cxa_free_exception(ptr)}}),clearRef:(function(ptr){if(!ptr)return;var info=EXCEPTIONS.infos[ptr];info.refcount=0})};function ___resumeException(ptr){if(!EXCEPTIONS.last){EXCEPTIONS.last=ptr}throw ptr}function ___cxa_find_matching_catch(){var thrown=EXCEPTIONS.last;if(!thrown){return(Runtime.setTempRet0(0),0)|0}var info=EXCEPTIONS.infos[thrown];var throwntype=info.type;if(!throwntype){return(Runtime.setTempRet0(0),thrown)|0}var typeArray=Array.prototype.slice.call(arguments);var pointer=Module["___cxa_is_pointer_type"](throwntype);if(!___cxa_find_matching_catch.buffer)___cxa_find_matching_catch.buffer=_malloc(4);HEAP32[___cxa_find_matching_catch.buffer>>2]=thrown;thrown=___cxa_find_matching_catch.buffer;for(var i=0;i>2];info.adjusted=thrown;return(Runtime.setTempRet0(typeArray[i]),thrown)|0}}thrown=HEAP32[thrown>>2];return(Runtime.setTempRet0(throwntype),thrown)|0}function ___cxa_throw(ptr,type,destructor){EXCEPTIONS.infos[ptr]={ptr:ptr,adjusted:ptr,type:type,destructor:destructor,refcount:0,caught:false,rethrown:false};EXCEPTIONS.last=ptr;if(!("uncaught_exception"in __ZSt18uncaught_exceptionv)){__ZSt18uncaught_exceptionv.uncaught_exception=1}else{__ZSt18uncaught_exceptionv.uncaught_exception++}throw ptr}function ___gxx_personality_v0(){}function ___lock(){}var ERRNO_CODES={EPERM:1,ENOENT:2,ESRCH:3,EINTR:4,EIO:5,ENXIO:6,E2BIG:7,ENOEXEC:8,EBADF:9,ECHILD:10,EAGAIN:11,EWOULDBLOCK:11,ENOMEM:12,EACCES:13,EFAULT:14,ENOTBLK:15,EBUSY:16,EEXIST:17,EXDEV:18,ENODEV:19,ENOTDIR:20,EISDIR:21,EINVAL:22,ENFILE:23,EMFILE:24,ENOTTY:25,ETXTBSY:26,EFBIG:27,ENOSPC:28,ESPIPE:29,EROFS:30,EMLINK:31,EPIPE:32,EDOM:33,ERANGE:34,ENOMSG:42,EIDRM:43,ECHRNG:44,EL2NSYNC:45,EL3HLT:46,EL3RST:47,ELNRNG:48,EUNATCH:49,ENOCSI:50,EL2HLT:51,EDEADLK:35,ENOLCK:37,EBADE:52,EBADR:53,EXFULL:54,ENOANO:55,EBADRQC:56,EBADSLT:57,EDEADLOCK:35,EBFONT:59,ENOSTR:60,ENODATA:61,ETIME:62,ENOSR:63,ENONET:64,ENOPKG:65,EREMOTE:66,ENOLINK:67,EADV:68,ESRMNT:69,ECOMM:70,EPROTO:71,EMULTIHOP:72,EDOTDOT:73,EBADMSG:74,ENOTUNIQ:76,EBADFD:77,EREMCHG:78,ELIBACC:79,ELIBBAD:80,ELIBSCN:81,ELIBMAX:82,ELIBEXEC:83,ENOSYS:38,ENOTEMPTY:39,ENAMETOOLONG:36,ELOOP:40,EOPNOTSUPP:95,EPFNOSUPPORT:96,ECONNRESET:104,ENOBUFS:105,EAFNOSUPPORT:97,EPROTOTYPE:91,ENOTSOCK:88,ENOPROTOOPT:92,ESHUTDOWN:108,ECONNREFUSED:111,EADDRINUSE:98,ECONNABORTED:103,ENETUNREACH:101,ENETDOWN:100,ETIMEDOUT:110,EHOSTDOWN:112,EHOSTUNREACH:113,EINPROGRESS:115,EALREADY:114,EDESTADDRREQ:89,EMSGSIZE:90,EPROTONOSUPPORT:93,ESOCKTNOSUPPORT:94,EADDRNOTAVAIL:99,ENETRESET:102,EISCONN:106,ENOTCONN:107,ETOOMANYREFS:109,EUSERS:87,EDQUOT:122,ESTALE:116,ENOTSUP:95,ENOMEDIUM:123,EILSEQ:84,EOVERFLOW:75,ECANCELED:125,ENOTRECOVERABLE:131,EOWNERDEAD:130,ESTRPIPE:86};var ERRNO_MESSAGES={0:"Success",1:"Not super-user",2:"No such file or directory",3:"No such process",4:"Interrupted system call",5:"I/O error",6:"No such device or address",7:"Arg list too long",8:"Exec format error",9:"Bad file number",10:"No children",11:"No more processes",12:"Not enough core",13:"Permission denied",14:"Bad address",15:"Block device required",16:"Mount device busy",17:"File exists",18:"Cross-device link",19:"No such device",20:"Not a directory",21:"Is a directory",22:"Invalid argument",23:"Too many open files in system",24:"Too many open files",25:"Not a typewriter",26:"Text file busy",27:"File too large",28:"No space left on device",29:"Illegal seek",30:"Read only file system",31:"Too many links",32:"Broken pipe",33:"Math arg out of domain of func",34:"Math result not representable",35:"File locking deadlock error",36:"File or path name too long",37:"No record locks available",38:"Function not implemented",39:"Directory not empty",40:"Too many symbolic links",42:"No message of desired type",43:"Identifier removed",44:"Channel number out of range",45:"Level 2 not synchronized",46:"Level 3 halted",47:"Level 3 reset",48:"Link number out of range",49:"Protocol driver not attached",50:"No CSI structure available",51:"Level 2 halted",52:"Invalid exchange",53:"Invalid request descriptor",54:"Exchange full",55:"No anode",56:"Invalid request code",57:"Invalid slot",59:"Bad font file fmt",60:"Device not a stream",61:"No data (for no delay io)",62:"Timer expired",63:"Out of streams resources",64:"Machine is not on the network",65:"Package not installed",66:"The object is remote",67:"The link has been severed",68:"Advertise error",69:"Srmount error",70:"Communication error on send",71:"Protocol error",72:"Multihop attempted",73:"Cross mount point (not really error)",74:"Trying to read unreadable message",75:"Value too large for defined data type",76:"Given log. name not unique",77:"f.d. invalid for this operation",78:"Remote address changed",79:"Can access a needed shared lib",80:"Accessing a corrupted shared lib",81:".lib section in a.out corrupted",82:"Attempting to link in too many libs",83:"Attempting to exec a shared library",84:"Illegal byte sequence",86:"Streams pipe error",87:"Too many users",88:"Socket operation on non-socket",89:"Destination address required",90:"Message too long",91:"Protocol wrong type for socket",92:"Protocol not available",93:"Unknown protocol",94:"Socket type not supported",95:"Not supported",96:"Protocol family not supported",97:"Address family not supported by protocol family",98:"Address already in use",99:"Address not available",100:"Network interface is not configured",101:"Network is unreachable",102:"Connection reset by network",103:"Connection aborted",104:"Connection reset by peer",105:"No buffer space available",106:"Socket is already connected",107:"Socket is not connected",108:"Can't send after socket shutdown",109:"Too many references",110:"Connection timed out",111:"Connection refused",112:"Host is down",113:"Host is unreachable",114:"Socket already connected",115:"Connection already in progress",116:"Stale file handle",122:"Quota exceeded",123:"No medium (in tape drive)",125:"Operation canceled",130:"Previous owner died",131:"State not recoverable"};function ___setErrNo(value){if(Module["___errno_location"])HEAP32[Module["___errno_location"]()>>2]=value;return value}var PATH={splitPath:(function(filename){var splitPathRe=/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;return splitPathRe.exec(filename).slice(1)}),normalizeArray:(function(parts,allowAboveRoot){var up=0;for(var i=parts.length-1;i>=0;i--){var last=parts[i];if(last==="."){parts.splice(i,1)}else if(last===".."){parts.splice(i,1);up++}else if(up){parts.splice(i,1);up--}}if(allowAboveRoot){for(;up;up--){parts.unshift("..")}}return parts}),normalize:(function(path){var isAbsolute=path.charAt(0)==="/",trailingSlash=path.substr(-1)==="/";path=PATH.normalizeArray(path.split("/").filter((function(p){return!!p})),!isAbsolute).join("/");if(!path&&!isAbsolute){path="."}if(path&&trailingSlash){path+="/"}return(isAbsolute?"/":"")+path}),dirname:(function(path){var result=PATH.splitPath(path),root=result[0],dir=result[1];if(!root&&!dir){return"."}if(dir){dir=dir.substr(0,dir.length-1)}return root+dir}),basename:(function(path){if(path==="/")return"/";var lastSlash=path.lastIndexOf("/");if(lastSlash===-1)return path;return path.substr(lastSlash+1)}),extname:(function(path){return PATH.splitPath(path)[3]}),join:(function(){var paths=Array.prototype.slice.call(arguments,0);return PATH.normalize(paths.join("/"))}),join2:(function(l,r){return PATH.normalize(l+"/"+r)}),resolve:(function(){var resolvedPath="",resolvedAbsolute=false;for(var i=arguments.length-1;i>=-1&&!resolvedAbsolute;i--){var path=i>=0?arguments[i]:FS.cwd();if(typeof path!=="string"){throw new TypeError("Arguments to path.resolve must be strings")}else if(!path){return""}resolvedPath=path+"/"+resolvedPath;resolvedAbsolute=path.charAt(0)==="/"}resolvedPath=PATH.normalizeArray(resolvedPath.split("/").filter((function(p){return!!p})),!resolvedAbsolute).join("/");return(resolvedAbsolute?"/":"")+resolvedPath||"."}),relative:(function(from,to){from=PATH.resolve(from).substr(1);to=PATH.resolve(to).substr(1);function trim(arr){var start=0;for(;start=0;end--){if(arr[end]!=="")break}if(start>end)return[];return arr.slice(start,end-start+1)}var fromParts=trim(from.split("/"));var toParts=trim(to.split("/"));var length=Math.min(fromParts.length,toParts.length);var samePartsLength=length;for(var i=0;i0){result=buf.slice(0,bytesRead).toString("utf-8")}else{result=null}}else if(typeof window!="undefined"&&typeof window.prompt=="function"){result=window.prompt("Input: ");if(result!==null){result+="\n"}}else if(typeof readline=="function"){result=readline();if(result!==null){result+="\n"}}if(!result){return null}tty.input=intArrayFromString(result,true)}return tty.input.shift()}),put_char:(function(tty,val){if(val===null||val===10){Module["print"](UTF8ArrayToString(tty.output,0));tty.output=[]}else{if(val!=0)tty.output.push(val)}}),flush:(function(tty){if(tty.output&&tty.output.length>0){Module["print"](UTF8ArrayToString(tty.output,0));tty.output=[]}})},default_tty1_ops:{put_char:(function(tty,val){if(val===null||val===10){Module["printErr"](UTF8ArrayToString(tty.output,0));tty.output=[]}else{if(val!=0)tty.output.push(val)}}),flush:(function(tty){if(tty.output&&tty.output.length>0){Module["printErr"](UTF8ArrayToString(tty.output,0));tty.output=[]}})}};var MEMFS={ops_table:null,mount:(function(mount){return MEMFS.createNode(null,"/",16384|511,0)}),createNode:(function(parent,name,mode,dev){if(FS.isBlkdev(mode)||FS.isFIFO(mode)){throw new FS.ErrnoError(ERRNO_CODES.EPERM)}if(!MEMFS.ops_table){MEMFS.ops_table={dir:{node:{getattr:MEMFS.node_ops.getattr,setattr:MEMFS.node_ops.setattr,lookup:MEMFS.node_ops.lookup,mknod:MEMFS.node_ops.mknod,rename:MEMFS.node_ops.rename,unlink:MEMFS.node_ops.unlink,rmdir:MEMFS.node_ops.rmdir,readdir:MEMFS.node_ops.readdir,symlink:MEMFS.node_ops.symlink},stream:{llseek:MEMFS.stream_ops.llseek}},file:{node:{getattr:MEMFS.node_ops.getattr,setattr:MEMFS.node_ops.setattr},stream:{llseek:MEMFS.stream_ops.llseek,read:MEMFS.stream_ops.read,write:MEMFS.stream_ops.write,allocate:MEMFS.stream_ops.allocate,mmap:MEMFS.stream_ops.mmap,msync:MEMFS.stream_ops.msync}},link:{node:{getattr:MEMFS.node_ops.getattr,setattr:MEMFS.node_ops.setattr,readlink:MEMFS.node_ops.readlink},stream:{}},chrdev:{node:{getattr:MEMFS.node_ops.getattr,setattr:MEMFS.node_ops.setattr},stream:FS.chrdev_stream_ops}}}var node=FS.createNode(parent,name,mode,dev);if(FS.isDir(node.mode)){node.node_ops=MEMFS.ops_table.dir.node;node.stream_ops=MEMFS.ops_table.dir.stream;node.contents={}}else if(FS.isFile(node.mode)){node.node_ops=MEMFS.ops_table.file.node;node.stream_ops=MEMFS.ops_table.file.stream;node.usedBytes=0;node.contents=null}else if(FS.isLink(node.mode)){node.node_ops=MEMFS.ops_table.link.node;node.stream_ops=MEMFS.ops_table.link.stream}else if(FS.isChrdev(node.mode)){node.node_ops=MEMFS.ops_table.chrdev.node;node.stream_ops=MEMFS.ops_table.chrdev.stream}node.timestamp=Date.now();if(parent){parent.contents[name]=node}return node}),getFileDataAsRegularArray:(function(node){if(node.contents&&node.contents.subarray){var arr=[];for(var i=0;inode.contents.length){node.contents=MEMFS.getFileDataAsRegularArray(node);node.usedBytes=node.contents.length}if(!node.contents||node.contents.subarray){var prevCapacity=node.contents?node.contents.length:0;if(prevCapacity>=newCapacity)return;var CAPACITY_DOUBLING_MAX=1024*1024;newCapacity=Math.max(newCapacity,prevCapacity*(prevCapacity0)node.contents.set(oldContents.subarray(0,node.usedBytes),0);return}if(!node.contents&&newCapacity>0)node.contents=[];while(node.contents.lengthnewSize)node.contents.length=newSize;else while(node.contents.length=stream.node.usedBytes)return 0;var size=Math.min(stream.node.usedBytes-position,length);assert(size>=0);if(size>8&&contents.subarray){buffer.set(contents.subarray(position,position+size),offset)}else{for(var i=0;i0||position+lengthe2.timestamp){create.push(key);total++}}));var remove=[];Object.keys(dst.entries).forEach((function(key){var e=dst.entries[key];var e2=src.entries[key];if(!e2){remove.push(key);total++}}));if(!total){return callback(null)}var completed=0;var db=src.type==="remote"?src.db:dst.db;var transaction=db.transaction([IDBFS.DB_STORE_NAME],"readwrite");var store=transaction.objectStore(IDBFS.DB_STORE_NAME);function done(err){if(err){if(!done.errored){done.errored=true;return callback(err)}return}if(++completed>=total){return callback(null)}}transaction.onerror=(function(e){done(this.error);e.preventDefault()});create.sort().forEach((function(path){if(dst.type==="local"){IDBFS.loadRemoteEntry(store,path,(function(err,entry){if(err)return done(err);IDBFS.storeLocalEntry(path,entry,done)}))}else{IDBFS.loadLocalEntry(path,(function(err,entry){if(err)return done(err);IDBFS.storeRemoteEntry(store,path,entry,done)}))}}));remove.sort().reverse().forEach((function(path){if(dst.type==="local"){IDBFS.removeLocalEntry(path,done)}else{IDBFS.removeRemoteEntry(store,path,done)}}))})};var NODEFS={isWindows:false,staticInit:(function(){NODEFS.isWindows=!!process.platform.match(/^win/)}),mount:(function(mount){assert(ENVIRONMENT_IS_NODE);return NODEFS.createNode(null,"/",NODEFS.getMode(mount.opts.root),0)}),createNode:(function(parent,name,mode,dev){if(!FS.isDir(mode)&&!FS.isFile(mode)&&!FS.isLink(mode)){throw new FS.ErrnoError(ERRNO_CODES.EINVAL)}var node=FS.createNode(parent,name,mode);node.node_ops=NODEFS.node_ops;node.stream_ops=NODEFS.stream_ops;return node}),getMode:(function(path){var stat;try{stat=fs.lstatSync(path);if(NODEFS.isWindows){stat.mode=stat.mode|(stat.mode&146)>>1}}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}return stat.mode}),realPath:(function(node){var parts=[];while(node.parent!==node){parts.push(node.name);node=node.parent}parts.push(node.mount.opts.root);parts.reverse();return PATH.join.apply(null,parts)}),flagsToPermissionStringMap:{0:"r",1:"r+",2:"r+",64:"r",65:"r+",66:"r+",129:"rx+",193:"rx+",514:"w+",577:"w",578:"w+",705:"wx",706:"wx+",1024:"a",1025:"a",1026:"a+",1089:"a",1090:"a+",1153:"ax",1154:"ax+",1217:"ax",1218:"ax+",4096:"rs",4098:"rs+"},flagsToPermissionString:(function(flags){flags&=~2097152;flags&=~2048;flags&=~32768;flags&=~524288;if(flags in NODEFS.flagsToPermissionStringMap){return NODEFS.flagsToPermissionStringMap[flags]}else{throw new FS.ErrnoError(ERRNO_CODES.EINVAL)}}),node_ops:{getattr:(function(node){var path=NODEFS.realPath(node);var stat;try{stat=fs.lstatSync(path)}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}if(NODEFS.isWindows&&!stat.blksize){stat.blksize=4096}if(NODEFS.isWindows&&!stat.blocks){stat.blocks=(stat.size+stat.blksize-1)/stat.blksize|0}return{dev:stat.dev,ino:stat.ino,mode:stat.mode,nlink:stat.nlink,uid:stat.uid,gid:stat.gid,rdev:stat.rdev,size:stat.size,atime:stat.atime,mtime:stat.mtime,ctime:stat.ctime,blksize:stat.blksize,blocks:stat.blocks}}),setattr:(function(node,attr){var path=NODEFS.realPath(node);try{if(attr.mode!==undefined){fs.chmodSync(path,attr.mode);node.mode=attr.mode}if(attr.timestamp!==undefined){var date=new Date(attr.timestamp);fs.utimesSync(path,date,date)}if(attr.size!==undefined){fs.truncateSync(path,attr.size)}}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}}),lookup:(function(parent,name){var path=PATH.join2(NODEFS.realPath(parent),name);var mode=NODEFS.getMode(path);return NODEFS.createNode(parent,name,mode)}),mknod:(function(parent,name,mode,dev){var node=NODEFS.createNode(parent,name,mode,dev);var path=NODEFS.realPath(node);try{if(FS.isDir(node.mode)){fs.mkdirSync(path,node.mode)}else{fs.writeFileSync(path,"",{mode:node.mode})}}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}return node}),rename:(function(oldNode,newDir,newName){var oldPath=NODEFS.realPath(oldNode);var newPath=PATH.join2(NODEFS.realPath(newDir),newName);try{fs.renameSync(oldPath,newPath)}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}}),unlink:(function(parent,name){var path=PATH.join2(NODEFS.realPath(parent),name);try{fs.unlinkSync(path)}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}}),rmdir:(function(parent,name){var path=PATH.join2(NODEFS.realPath(parent),name);try{fs.rmdirSync(path)}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}}),readdir:(function(node){var path=NODEFS.realPath(node);try{return fs.readdirSync(path)}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}}),symlink:(function(parent,newName,oldPath){var newPath=PATH.join2(NODEFS.realPath(parent),newName);try{fs.symlinkSync(oldPath,newPath)}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}}),readlink:(function(node){var path=NODEFS.realPath(node);try{path=fs.readlinkSync(path);path=NODEJS_PATH.relative(NODEJS_PATH.resolve(node.mount.opts.root),path);return path}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}})},stream_ops:{open:(function(stream){var path=NODEFS.realPath(stream.node);try{if(FS.isFile(stream.node.mode)){stream.nfd=fs.openSync(path,NODEFS.flagsToPermissionString(stream.flags))}}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}}),close:(function(stream){try{if(FS.isFile(stream.node.mode)&&stream.nfd){fs.closeSync(stream.nfd)}}catch(e){if(!e.code)throw e;throw new FS.ErrnoError(ERRNO_CODES[e.code])}}),read:(function(stream,buffer,offset,length,position){if(length===0)return 0;var nbuffer=new Buffer(length);var res;try{res=fs.readSync(stream.nfd,nbuffer,0,length,position)}catch(e){throw new FS.ErrnoError(ERRNO_CODES[e.code])}if(res>0){for(var i=0;i=stream.node.size)return 0;var chunk=stream.node.contents.slice(position,position+length);var ab=WORKERFS.reader.readAsArrayBuffer(chunk);buffer.set(new Uint8Array(ab),offset);return chunk.size}),write:(function(stream,buffer,offset,length,position){throw new FS.ErrnoError(ERRNO_CODES.EIO)}),llseek:(function(stream,offset,whence){var position=offset;if(whence===1){position+=stream.position}else if(whence===2){if(FS.isFile(stream.node.mode)){position+=stream.node.size}}if(position<0){throw new FS.ErrnoError(ERRNO_CODES.EINVAL)}return position})}};STATICTOP+=16;STATICTOP+=16;STATICTOP+=16;var FS={root:null,mounts:[],devices:[null],streams:[],nextInode:1,nameTable:null,currentPath:"/",initialized:false,ignorePermissions:true,trackingDelegate:{},tracking:{openFlags:{READ:1,WRITE:2}},ErrnoError:null,genericErrors:{},filesystems:null,syncFSRequests:0,handleFSError:(function(e){if(!(e instanceof FS.ErrnoError))throw e+" : "+stackTrace();return ___setErrNo(e.errno)}),lookupPath:(function(path,opts){path=PATH.resolve(FS.cwd(),path);opts=opts||{};if(!path)return{path:"",node:null};var defaults={follow_mount:true,recurse_count:0};for(var key in defaults){if(opts[key]===undefined){opts[key]=defaults[key]}}if(opts.recurse_count>8){throw new FS.ErrnoError(ERRNO_CODES.ELOOP)}var parts=PATH.normalizeArray(path.split("/").filter((function(p){return!!p})),false);var current=FS.root;var current_path="/";for(var i=0;i40){throw new FS.ErrnoError(ERRNO_CODES.ELOOP)}}}}return{path:current_path,node:current}}),getPath:(function(node){var path;while(true){if(FS.isRoot(node)){var mount=node.mount.mountpoint;if(!path)return mount;return mount[mount.length-1]!=="/"?mount+"/"+path:mount+path}path=path?node.name+"/"+path:node.name;node=node.parent}}),hashName:(function(parentid,name){var hash=0;for(var i=0;i>>0)%FS.nameTable.length}),hashAddNode:(function(node){var hash=FS.hashName(node.parent.id,node.name);node.name_next=FS.nameTable[hash];FS.nameTable[hash]=node}),hashRemoveNode:(function(node){var hash=FS.hashName(node.parent.id,node.name);if(FS.nameTable[hash]===node){FS.nameTable[hash]=node.name_next}else{var current=FS.nameTable[hash];while(current){if(current.name_next===node){current.name_next=node.name_next;break}current=current.name_next}}}),lookupNode:(function(parent,name){var err=FS.mayLookup(parent);if(err){throw new FS.ErrnoError(err,parent)}var hash=FS.hashName(parent.id,name);for(var node=FS.nameTable[hash];node;node=node.name_next){var nodeName=node.name;if(node.parent.id===parent.id&&nodeName===name){return node}}return FS.lookup(parent,name)}),createNode:(function(parent,name,mode,rdev){if(!FS.FSNode){FS.FSNode=(function(parent,name,mode,rdev){if(!parent){parent=this}this.parent=parent;this.mount=parent.mount;this.mounted=null;this.id=FS.nextInode++;this.name=name;this.mode=mode;this.node_ops={};this.stream_ops={};this.rdev=rdev});FS.FSNode.prototype={};var readMode=292|73;var writeMode=146;Object.defineProperties(FS.FSNode.prototype,{read:{get:(function(){return(this.mode&readMode)===readMode}),set:(function(val){val?this.mode|=readMode:this.mode&=~readMode})},write:{get:(function(){return(this.mode&writeMode)===writeMode}),set:(function(val){val?this.mode|=writeMode:this.mode&=~writeMode})},isFolder:{get:(function(){return FS.isDir(this.mode)})},isDevice:{get:(function(){return FS.isChrdev(this.mode)})}})}var node=new FS.FSNode(parent,name,mode,rdev);FS.hashAddNode(node);return node}),destroyNode:(function(node){FS.hashRemoveNode(node)}),isRoot:(function(node){return node===node.parent}),isMountpoint:(function(node){return!!node.mounted}),isFile:(function(mode){return(mode&61440)===32768}),isDir:(function(mode){return(mode&61440)===16384}),isLink:(function(mode){return(mode&61440)===40960}),isChrdev:(function(mode){return(mode&61440)===8192}),isBlkdev:(function(mode){return(mode&61440)===24576}),isFIFO:(function(mode){return(mode&61440)===4096}),isSocket:(function(mode){return(mode&49152)===49152}),flagModes:{"r":0,"rs":1052672,"r+":2,"w":577,"wx":705,"xw":705,"w+":578,"wx+":706,"xw+":706,"a":1089,"ax":1217,"xa":1217,"a+":1090,"ax+":1218,"xa+":1218},modeStringToFlags:(function(str){var flags=FS.flagModes[str];if(typeof flags==="undefined"){throw new Error("Unknown file open mode: "+str)}return flags}),flagsToPermissionString:(function(flag){var perms=["r","w","rw"][flag&3];if(flag&512){perms+="w"}return perms}),nodePermissions:(function(node,perms){if(FS.ignorePermissions){return 0}if(perms.indexOf("r")!==-1&&!(node.mode&292)){return ERRNO_CODES.EACCES}else if(perms.indexOf("w")!==-1&&!(node.mode&146)){return ERRNO_CODES.EACCES}else if(perms.indexOf("x")!==-1&&!(node.mode&73)){return ERRNO_CODES.EACCES}return 0}),mayLookup:(function(dir){var err=FS.nodePermissions(dir,"x");if(err)return err;if(!dir.node_ops.lookup)return ERRNO_CODES.EACCES;return 0}),mayCreate:(function(dir,name){try{var node=FS.lookupNode(dir,name);return ERRNO_CODES.EEXIST}catch(e){}return FS.nodePermissions(dir,"wx")}),mayDelete:(function(dir,name,isdir){var node;try{node=FS.lookupNode(dir,name)}catch(e){return e.errno}var err=FS.nodePermissions(dir,"wx");if(err){return err}if(isdir){if(!FS.isDir(node.mode)){return ERRNO_CODES.ENOTDIR}if(FS.isRoot(node)||FS.getPath(node)===FS.cwd()){return ERRNO_CODES.EBUSY}}else{if(FS.isDir(node.mode)){return ERRNO_CODES.EISDIR}}return 0}),mayOpen:(function(node,flags){if(!node){return ERRNO_CODES.ENOENT}if(FS.isLink(node.mode)){return ERRNO_CODES.ELOOP}else if(FS.isDir(node.mode)){if(FS.flagsToPermissionString(flags)!=="r"||flags&512){return ERRNO_CODES.EISDIR}}return FS.nodePermissions(node,FS.flagsToPermissionString(flags))}),MAX_OPEN_FDS:4096,nextfd:(function(fd_start,fd_end){fd_start=fd_start||0;fd_end=fd_end||FS.MAX_OPEN_FDS;for(var fd=fd_start;fd<=fd_end;fd++){if(!FS.streams[fd]){return fd}}throw new FS.ErrnoError(ERRNO_CODES.EMFILE)}),getStream:(function(fd){return FS.streams[fd]}),createStream:(function(stream,fd_start,fd_end){if(!FS.FSStream){FS.FSStream=(function(){});FS.FSStream.prototype={};Object.defineProperties(FS.FSStream.prototype,{object:{get:(function(){return this.node}),set:(function(val){this.node=val})},isRead:{get:(function(){return(this.flags&2097155)!==1})},isWrite:{get:(function(){return(this.flags&2097155)!==0})},isAppend:{get:(function(){return this.flags&1024})}})}var newStream=new FS.FSStream;for(var p in stream){newStream[p]=stream[p]}stream=newStream;var fd=FS.nextfd(fd_start,fd_end);stream.fd=fd;FS.streams[fd]=stream;return stream}),closeStream:(function(fd){FS.streams[fd]=null}),chrdev_stream_ops:{open:(function(stream){var device=FS.getDevice(stream.node.rdev);stream.stream_ops=device.stream_ops;if(stream.stream_ops.open){stream.stream_ops.open(stream)}}),llseek:(function(){throw new FS.ErrnoError(ERRNO_CODES.ESPIPE)})},major:(function(dev){return dev>>8}),minor:(function(dev){return dev&255}),makedev:(function(ma,mi){return ma<<8|mi}),registerDevice:(function(dev,ops){FS.devices[dev]={stream_ops:ops}}),getDevice:(function(dev){return FS.devices[dev]}),getMounts:(function(mount){var mounts=[];var check=[mount];while(check.length){var m=check.pop();mounts.push(m);check.push.apply(check,m.mounts)}return mounts}),syncfs:(function(populate,callback){if(typeof populate==="function"){callback=populate;populate=false}FS.syncFSRequests++;if(FS.syncFSRequests>1){console.log("warning: "+FS.syncFSRequests+" FS.syncfs operations in flight at once, probably just doing extra work")}var mounts=FS.getMounts(FS.root.mount);var completed=0;function doCallback(err){assert(FS.syncFSRequests>0);FS.syncFSRequests--;return callback(err)}function done(err){if(err){if(!done.errored){done.errored=true;return doCallback(err)}return}if(++completed>=mounts.length){doCallback(null)}}mounts.forEach((function(mount){if(!mount.type.syncfs){return done(null)}mount.type.syncfs(mount,populate,done)}))}),mount:(function(type,opts,mountpoint){var root=mountpoint==="/";var pseudo=!mountpoint;var node;if(root&&FS.root){throw new FS.ErrnoError(ERRNO_CODES.EBUSY)}else if(!root&&!pseudo){var lookup=FS.lookupPath(mountpoint,{follow_mount:false});mountpoint=lookup.path;node=lookup.node;if(FS.isMountpoint(node)){throw new FS.ErrnoError(ERRNO_CODES.EBUSY)}if(!FS.isDir(node.mode)){throw new FS.ErrnoError(ERRNO_CODES.ENOTDIR)}}var mount={type:type,opts:opts,mountpoint:mountpoint,mounts:[]};var mountRoot=type.mount(mount);mountRoot.mount=mount;mount.root=mountRoot;if(root){FS.root=mountRoot}else if(node){node.mounted=mount;if(node.mount){node.mount.mounts.push(mount)}}return mountRoot}),unmount:(function(mountpoint){var lookup=FS.lookupPath(mountpoint,{follow_mount:false});if(!FS.isMountpoint(lookup.node)){throw new FS.ErrnoError(ERRNO_CODES.EINVAL)}var node=lookup.node;var mount=node.mounted;var mounts=FS.getMounts(mount);Object.keys(FS.nameTable).forEach((function(hash){var current=FS.nameTable[hash];while(current){var next=current.name_next;if(mounts.indexOf(current.mount)!==-1){FS.destroyNode(current)}current=next}}));node.mounted=null;var idx=node.mount.mounts.indexOf(mount);assert(idx!==-1);node.mount.mounts.splice(idx,1)}),lookup:(function(parent,name){return parent.node_ops.lookup(parent,name)}),mknod:(function(path,mode,dev){var lookup=FS.lookupPath(path,{parent:true});var parent=lookup.node;var name=PATH.basename(path);if(!name||name==="."||name===".."){throw new FS.ErrnoError(ERRNO_CODES.EINVAL)}var err=FS.mayCreate(parent,name);if(err){throw new FS.ErrnoError(err)}if(!parent.node_ops.mknod){throw new FS.ErrnoError(ERRNO_CODES.EPERM)}return parent.node_ops.mknod(parent,name,mode,dev)}),create:(function(path,mode){mode=mode!==undefined?mode:438;mode&=4095;mode|=32768;return FS.mknod(path,mode,0)}),mkdir:(function(path,mode){mode=mode!==undefined?mode:511;mode&=511|512;mode|=16384;return FS.mknod(path,mode,0)}),mkdirTree:(function(path,mode){var dirs=path.split("/");var d="";for(var i=0;ithis.length-1||idx<0){return undefined}var chunkOffset=idx%this.chunkSize;var chunkNum=idx/this.chunkSize|0;return this.getter(chunkNum)[chunkOffset]};LazyUint8Array.prototype.setDataGetter=function LazyUint8Array_setDataGetter(getter){this.getter=getter};LazyUint8Array.prototype.cacheLength=function LazyUint8Array_cacheLength(){var xhr=new XMLHttpRequest;xhr.open("HEAD",url,false);xhr.send(null);if(!(xhr.status>=200&&xhr.status<300||xhr.status===304))throw new Error("Couldn't load "+url+". Status: "+xhr.status);var datalength=Number(xhr.getResponseHeader("Content-length"));var header;var hasByteServing=(header=xhr.getResponseHeader("Accept-Ranges"))&&header==="bytes";var usesGzip=(header=xhr.getResponseHeader("Content-Encoding"))&&header==="gzip";var chunkSize=1024*1024;if(!hasByteServing)chunkSize=datalength;var doXHR=(function(from,to){if(from>to)throw new Error("invalid range ("+from+", "+to+") or no bytes requested!");if(to>datalength-1)throw new Error("only "+datalength+" bytes available! programmer error!");var xhr=new XMLHttpRequest;xhr.open("GET",url,false);if(datalength!==chunkSize)xhr.setRequestHeader("Range","bytes="+from+"-"+to);if(typeof Uint8Array!="undefined")xhr.responseType="arraybuffer";if(xhr.overrideMimeType){xhr.overrideMimeType("text/plain; charset=x-user-defined")}xhr.send(null);if(!(xhr.status>=200&&xhr.status<300||xhr.status===304))throw new Error("Couldn't load "+url+". Status: "+xhr.status);if(xhr.response!==undefined){return new Uint8Array(xhr.response||[])}else{return intArrayFromString(xhr.responseText||"",true)}});var lazyArray=this;lazyArray.setDataGetter((function(chunkNum){var start=chunkNum*chunkSize;var end=(chunkNum+1)*chunkSize-1;end=Math.min(end,datalength-1);if(typeof lazyArray.chunks[chunkNum]==="undefined"){lazyArray.chunks[chunkNum]=doXHR(start,end)}if(typeof lazyArray.chunks[chunkNum]==="undefined")throw new Error("doXHR failed!");return lazyArray.chunks[chunkNum]}));if(usesGzip||!datalength){chunkSize=datalength=1;datalength=this.getter(0).length;chunkSize=datalength;console.log("LazyFiles on gzip forces download of the whole file when length is accessed")}this._length=datalength;this._chunkSize=chunkSize;this.lengthKnown=true};if(typeof XMLHttpRequest!=="undefined"){if(!ENVIRONMENT_IS_WORKER)throw"Cannot do synchronous binary XHRs outside webworkers in modern browsers. Use --embed-file or --preload-file in emcc";var lazyArray=new LazyUint8Array;Object.defineProperties(lazyArray,{length:{get:(function(){if(!this.lengthKnown){this.cacheLength()}return this._length})},chunkSize:{get:(function(){if(!this.lengthKnown){this.cacheLength()}return this._chunkSize})}});var properties={isDevice:false,contents:lazyArray}}else{var properties={isDevice:false,url:url}}var node=FS.createFile(parent,name,properties,canRead,canWrite);if(properties.contents){node.contents=properties.contents}else if(properties.url){node.contents=null;node.url=properties.url}Object.defineProperties(node,{usedBytes:{get:(function(){return this.contents.length})}});var stream_ops={};var keys=Object.keys(node.stream_ops);keys.forEach((function(key){var fn=node.stream_ops[key];stream_ops[key]=function forceLoadLazyFile(){if(!FS.forceLoadFile(node)){throw new FS.ErrnoError(ERRNO_CODES.EIO)}return fn.apply(null,arguments)}}));stream_ops.read=function stream_ops_read(stream,buffer,offset,length,position){if(!FS.forceLoadFile(node)){throw new FS.ErrnoError(ERRNO_CODES.EIO)}var contents=stream.node.contents;if(position>=contents.length)return 0;var size=Math.min(contents.length-position,length);assert(size>=0);if(contents.slice){for(var i=0;i>2]=stat.dev;HEAP32[buf+4>>2]=0;HEAP32[buf+8>>2]=stat.ino;HEAP32[buf+12>>2]=stat.mode;HEAP32[buf+16>>2]=stat.nlink;HEAP32[buf+20>>2]=stat.uid;HEAP32[buf+24>>2]=stat.gid;HEAP32[buf+28>>2]=stat.rdev;HEAP32[buf+32>>2]=0;HEAP32[buf+36>>2]=stat.size;HEAP32[buf+40>>2]=4096;HEAP32[buf+44>>2]=stat.blocks;HEAP32[buf+48>>2]=stat.atime.getTime()/1e3|0;HEAP32[buf+52>>2]=0;HEAP32[buf+56>>2]=stat.mtime.getTime()/1e3|0;HEAP32[buf+60>>2]=0;HEAP32[buf+64>>2]=stat.ctime.getTime()/1e3|0;HEAP32[buf+68>>2]=0;HEAP32[buf+72>>2]=stat.ino;return 0}),doMsync:(function(addr,stream,len,flags){var buffer=new Uint8Array(HEAPU8.subarray(addr,addr+len));FS.msync(stream,buffer,0,len,flags)}),doMkdir:(function(path,mode){path=PATH.normalize(path);if(path[path.length-1]==="/")path=path.substr(0,path.length-1);FS.mkdir(path,mode,0);return 0}),doMknod:(function(path,mode,dev){switch(mode&61440){case 32768:case 8192:case 24576:case 4096:case 49152:break;default:return-ERRNO_CODES.EINVAL}FS.mknod(path,mode,dev);return 0}),doReadlink:(function(path,buf,bufsize){if(bufsize<=0)return-ERRNO_CODES.EINVAL;var ret=FS.readlink(path);var len=Math.min(bufsize,lengthBytesUTF8(ret));var endChar=HEAP8[buf+len];stringToUTF8(ret,buf,bufsize+1);HEAP8[buf+len]=endChar;return len}),doAccess:(function(path,amode){if(amode&~7){return-ERRNO_CODES.EINVAL}var node;var lookup=FS.lookupPath(path,{follow:true});node=lookup.node;var perms="";if(amode&4)perms+="r";if(amode&2)perms+="w";if(amode&1)perms+="x";if(perms&&FS.nodePermissions(node,perms)){return-ERRNO_CODES.EACCES}return 0}),doDup:(function(path,flags,suggestFD){var suggest=FS.getStream(suggestFD);if(suggest)FS.close(suggest);return FS.open(path,flags,0,suggestFD,suggestFD).fd}),doReadv:(function(stream,iov,iovcnt,offset){var ret=0;for(var i=0;i>2];var len=HEAP32[iov+(i*8+4)>>2];var curr=FS.read(stream,HEAP8,ptr,len,offset);if(curr<0)return-1;ret+=curr;if(curr>2];var len=HEAP32[iov+(i*8+4)>>2];var curr=FS.write(stream,HEAP8,ptr,len,offset);if(curr<0)return-1;ret+=curr}return ret}),varargs:0,get:(function(varargs){SYSCALLS.varargs+=4;var ret=HEAP32[SYSCALLS.varargs-4>>2];return ret}),getStr:(function(){var ret=Pointer_stringify(SYSCALLS.get());return ret}),getStreamFromFD:(function(){var stream=FS.getStream(SYSCALLS.get());if(!stream)throw new FS.ErrnoError(ERRNO_CODES.EBADF);return stream}),getSocketFromFD:(function(){var socket=SOCKFS.getSocket(SYSCALLS.get());if(!socket)throw new FS.ErrnoError(ERRNO_CODES.EBADF);return socket}),getSocketAddress:(function(allowNull){var addrp=SYSCALLS.get(),addrlen=SYSCALLS.get();if(allowNull&&addrp===0)return null;var info=__read_sockaddr(addrp,addrlen);if(info.errno)throw new FS.ErrnoError(info.errno);info.addr=DNS.lookup_addr(info.addr)||info.addr;return info}),get64:(function(){var low=SYSCALLS.get(),high=SYSCALLS.get();if(low>=0)assert(high===0);else assert(high===-1);return low}),getZero:(function(){assert(SYSCALLS.get()===0)})};function ___syscall140(which,varargs){SYSCALLS.varargs=varargs;try{var stream=SYSCALLS.getStreamFromFD(),offset_high=SYSCALLS.get(),offset_low=SYSCALLS.get(),result=SYSCALLS.get(),whence=SYSCALLS.get();var offset=offset_low;FS.llseek(stream,offset,whence);HEAP32[result>>2]=stream.position;if(stream.getdents&&offset===0&&whence===0)stream.getdents=null;return 0}catch(e){if(typeof FS==="undefined"||!(e instanceof FS.ErrnoError))abort(e);return-e.errno}}function ___syscall146(which,varargs){SYSCALLS.varargs=varargs;try{var stream=SYSCALLS.getStreamFromFD(),iov=SYSCALLS.get(),iovcnt=SYSCALLS.get();return SYSCALLS.doWritev(stream,iov,iovcnt)}catch(e){if(typeof FS==="undefined"||!(e instanceof FS.ErrnoError))abort(e);return-e.errno}}function ___syscall4(which,varargs){SYSCALLS.varargs=varargs;try{var stream=SYSCALLS.getStreamFromFD(),buf=SYSCALLS.get(),count=SYSCALLS.get();return FS.write(stream,HEAP8,buf,count)}catch(e){if(typeof FS==="undefined"||!(e instanceof FS.ErrnoError))abort(e);return-e.errno}}function ___syscall54(which,varargs){SYSCALLS.varargs=varargs;try{var stream=SYSCALLS.getStreamFromFD(),op=SYSCALLS.get();switch(op){case 21505:{if(!stream.tty)return-ERRNO_CODES.ENOTTY;return 0};case 21506:{if(!stream.tty)return-ERRNO_CODES.ENOTTY;return 0};case 21519:{if(!stream.tty)return-ERRNO_CODES.ENOTTY;var argp=SYSCALLS.get();HEAP32[argp>>2]=0;return 0};case 21520:{if(!stream.tty)return-ERRNO_CODES.ENOTTY;return-ERRNO_CODES.EINVAL};case 21531:{var argp=SYSCALLS.get();return FS.ioctl(stream,op,argp)};case 21523:{if(!stream.tty)return-ERRNO_CODES.ENOTTY;return 0};default:abort("bad ioctl syscall "+op)}}catch(e){if(typeof FS==="undefined"||!(e instanceof FS.ErrnoError))abort(e);return-e.errno}}function ___syscall6(which,varargs){SYSCALLS.varargs=varargs;try{var stream=SYSCALLS.getStreamFromFD();FS.close(stream);return 0}catch(e){if(typeof FS==="undefined"||!(e instanceof FS.ErrnoError))abort(e);return-e.errno}}function ___unlock(){}function _abort(){Module["abort"]()}function _dladdr(addr,info){var fname=allocate(intArrayFromString(Module["thisProgram"]||"./this.program"),"i8",ALLOC_NORMAL);HEAP32[addr>>2]=fname;HEAP32[addr+4>>2]=0;HEAP32[addr+8>>2]=0;HEAP32[addr+12>>2]=0;return 1}var _environ=STATICTOP;STATICTOP+=16;function ___buildEnvironment(env){var MAX_ENV_VALUES=64;var TOTAL_ENV_SIZE=1024;var poolPtr;var envPtr;if(!___buildEnvironment.called){___buildEnvironment.called=true;ENV["USER"]=ENV["LOGNAME"]="web_user";ENV["PATH"]="/";ENV["PWD"]="/";ENV["HOME"]="/home/web_user";ENV["LANG"]="C.UTF-8";ENV["_"]=Module["thisProgram"];poolPtr=allocate(TOTAL_ENV_SIZE,"i8",ALLOC_STATIC);envPtr=allocate(MAX_ENV_VALUES*4,"i8*",ALLOC_STATIC);HEAP32[envPtr>>2]=poolPtr;HEAP32[_environ>>2]=envPtr}else{envPtr=HEAP32[_environ>>2];poolPtr=HEAP32[envPtr>>2]}var strings=[];var totalSize=0;for(var key in env){if(typeof env[key]==="string"){var line=key+"="+env[key];strings.push(line);totalSize+=line.length}}if(totalSize>TOTAL_ENV_SIZE){throw new Error("Environment size exceeded TOTAL_ENV_SIZE!")}var ptrSize=4;for(var i=0;i>2]=poolPtr;poolPtr+=line.length+1}HEAP32[envPtr+strings.length*ptrSize>>2]=0}var ENV={};function _getenv(name){if(name===0)return 0;name=Pointer_stringify(name);if(!ENV.hasOwnProperty(name))return 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ASSERTIONS=false;function intArrayFromString(stringy,dontAddNull,length){var len=length>0?length:lengthBytesUTF8(stringy)+1;var u8array=new Array(len);var numBytesWritten=stringToUTF8Array(stringy,u8array,0,u8array.length);if(dontAddNull)u8array.length=numBytesWritten;return u8array}function intArrayToString(array){var ret=[];for(var i=0;i255){if(ASSERTIONS){assert(false,"Character code "+chr+" ("+String.fromCharCode(chr)+") at offset "+i+" not in 0x00-0xFF.")}chr&=255}ret.push(String.fromCharCode(chr))}return ret.join("")}Module["intArrayFromString"]=intArrayFromString;Module["intArrayToString"]=intArrayToString;Module["wasmTableSize"]=220;Module["wasmMaxTableSize"]=220;function invoke_i(index){try{return Module["dynCall_i"](index)}catch(e){if(typeof e!=="number"&&e!=="longjmp")throw e;Module["setThrew"](1,0)}}function invoke_ii(index,a1){try{return Module["dynCall_ii"](index,a1)}catch(e){if(typeof e!=="number"&&e!=="longjmp")throw e;Module["setThrew"](1,0)}}function 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