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wry/build/vulkan/hash.rs

32 lines
859 B
Rust

use {std::fmt::Write, walkdir::WalkDir};
pub const ROOT: &str = "src/gfx_apis/vulkan/shaders";
pub const HASH: &str = "src/gfx_apis/vulkan/shaders_hash.txt";
fn calculate_hash() -> anyhow::Result<String> {
let dir = WalkDir::new(ROOT);
let mut files = vec![];
for file in dir {
let file = file?;
if file.file_type().is_file() {
files.push(file.path().to_path_buf());
}
}
files.sort();
let mut out = String::new();
for file in files {
let data = std::fs::read(&file)?;
writeln!(out, "{} {}", blake3::hash(&data).to_hex(), file.display())?;
}
Ok(out)
}
pub fn unchanged() -> bool {
let Ok(actual) = std::fs::read_to_string(HASH) else {
return false;
};
let Ok(expected) = calculate_hash() else {
return false;
};
actual == expected
}