27 lines
768 B
Rust
27 lines
768 B
Rust
use std::{
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env,
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fs::File,
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io::{Read, Write},
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};
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fn main() {
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// Tell Cargo that if the given environment variable changes, to rerun this build script.
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println!("cargo:rerun-if-env-changed=RHAI_AHASH_SEED");
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let mut contents = String::new();
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File::open("build.template")
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.expect("cannot open `build.template`")
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.read_to_string(&mut contents)
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.expect("cannot read from `build.template`");
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let seed = env::var("RHAI_AHASH_SEED").map_or_else(|_| "None".into(), |s| format!("Some({s})"));
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contents = contents.replace("{{AHASH_SEED}}", &seed);
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File::create("src/config.rs")
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.expect("cannot create `config.rs`")
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.write(contents.as_bytes())
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.expect("cannot write to `config.rs`");
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}
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