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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,61 +1,14 @@ | ||
| use std::{ | ||
| fs::File, | ||
| io::{Cursor, Read}, | ||
| path::{Path, PathBuf}, | ||
| }; | ||
| use std::path::PathBuf; | ||
|
|
||
| const BARRETENBERG_ARCHIVE: &str = "BARRETENBERG_ARCHIVE"; | ||
| const BARRETENBERG_BIN_DIR: &str = "BARRETENBERG_BIN_DIR"; | ||
|
|
||
| const BARRETENBERG_ARCHIVE_FALLBACK: &str = "https://github.com/AztecProtocol/barretenberg/releases/download/barretenberg-v0.5.0/acvm_backend.wasm.tar.gz"; | ||
| // const ARCHIVE_SHA256: &str = "1xpycikqlvsjcryi3hkbc4mwmmdz7zshw6f76vyf1qssq53asyfx"; | ||
|
|
||
| fn unpack_wasm(archive_path: &Path, target_dir: &Path) -> Result<(), String> { | ||
| if archive_path.exists() && archive_path.is_file() { | ||
| let archive = File::open(archive_path).map_err(|_| "Could not read archive")?; | ||
| unpack_archive(archive, target_dir); | ||
|
|
||
| Ok(()) | ||
| } else { | ||
| Err(format!("Unable to locate {BARRETENBERG_ARCHIVE} - Please set the BARRETENBERG_BIN_DIR env var to the directory where it exists, or ensure it's located at {}", archive_path.display())) | ||
| } | ||
| } | ||
|
|
||
| fn unpack_archive<T: Read>(archive: T, target_dir: &Path) { | ||
| use flate2::read::GzDecoder; | ||
| use tar::Archive; | ||
|
|
||
| let gz_decoder = GzDecoder::new(archive); | ||
| let mut archive = Archive::new(gz_decoder); | ||
|
|
||
| archive.unpack(target_dir).unwrap(); | ||
| } | ||
|
|
||
| /// Try to download the specified URL into a buffer which is returned. | ||
| fn download_binary_from_url(url: &str) -> Result<Cursor<Vec<u8>>, String> { | ||
| let response = reqwest::blocking::get(url).map_err(|error| error.to_string())?; | ||
|
|
||
| let bytes = response.bytes().unwrap(); | ||
| Ok(Cursor::new(bytes.to_vec())) | ||
| } | ||
|
|
||
| fn main() -> Result<(), String> { | ||
| let out_dir = std::env::var("OUT_DIR").unwrap(); | ||
|
|
||
| match std::env::var(BARRETENBERG_ARCHIVE) { | ||
| Ok(archive_path) => { | ||
| unpack_wasm(&PathBuf::from(archive_path), &PathBuf::from(&out_dir))?; | ||
| println!("cargo:rustc-env={BARRETENBERG_BIN_DIR}={out_dir}"); | ||
| Ok(()) | ||
| } | ||
| Err(_) => { | ||
| let wasm_bytes = download_binary_from_url(BARRETENBERG_ARCHIVE_FALLBACK) | ||
| .expect("download should succeed"); | ||
| let dest_path = PathBuf::from(out_dir.clone()).join("acvm_backend.wasm"); | ||
|
|
||
| unpack_archive(wasm_bytes, &PathBuf::from(&out_dir)); | ||
| println!("cargo:rustc-env={BARRETENBERG_BIN_DIR}={out_dir}"); | ||
| println!("cargo:rustc-env={BARRETENBERG_BIN_DIR}={out_dir}"); | ||
| std::fs::copy("./src/acvm_backend.wasm", dest_path).unwrap(); | ||
|
|
||
| Ok(()) | ||
| } | ||
| } | ||
| Ok(()) | ||
| } |
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