PeterCxy/paprika
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build.rs: re-run after any file inside directories have changed

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this is needed to regenerate the build timestamp properly
This commit is contained in:
Peter Cai 2020-04-14 16:00:07 +08:00
parent e4421fc70e
commit f7d93bf799
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GPG key ID: 71F5FB4E4F3FD54F
1 changed files with 22 additions and 7 deletions
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29
build.rs
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@ -1,28 +1,43 @@
extern crate serde_json;
use std::fs;
use std::io::prelude::*;
use std::time::*;
fn main() {
println!("cargo:rerun-if-changed=config.json");
println!("cargo:rerun-if-changed=src");
println!("cargo:rerun-if-changed=theme");
println!("cargo:rerun-if-changed=Cargo.toml");
rerun_if_dir_changed("src");
rerun_if_dir_changed("theme");
// Load theme name from config.json and output code to load the theme via include_dir!
let config: serde_json::Value =
serde_json::from_str(&std::fs::read_to_string("./config.json").unwrap()).unwrap();
serde_json::from_str(&fs::read_to_string("./config.json").unwrap()).unwrap();
generate_build_timestamp();
generate_theme_loader(&config);
generate_hljs_loader(&config);
}
fn rerun_if_dir_changed(dir: &str) {
for f in fs::read_dir(dir).unwrap() {
let f = f.unwrap();
let t = f.file_type().unwrap();
let path = f.path();
let path = path.to_str().unwrap();
println!("cargo:rerun-if-changed={}", path);
if t.is_dir() {
rerun_if_dir_changed(path);
}
}
}
fn generate_build_timestamp() {
let build_time = format!(
"pub const BUILD_TIMESTAMP: u64 = {};",
SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs());
let out_path = std::path::PathBuf::from(std::env::var("OUT_DIR").unwrap());
let mut out_file = std::fs::File::create(out_path.join("build_timestamp.rs")).unwrap();
let mut out_file = fs::File::create(out_path.join("build_timestamp.rs")).unwrap();
out_file.write(build_time.as_bytes()).unwrap();
out_file.sync_data().unwrap();
}
@ -34,7 +49,7 @@ fn generate_theme_loader(config: &serde_json::Value) {
};
let theme_load_code = format!("const THEME_DIR: Dir = include_dir!(\"theme/{}\");", theme_name.as_str().unwrap());
let out_path = std::path::PathBuf::from(std::env::var("OUT_DIR").unwrap());
let mut out_file = std::fs::File::create(out_path.join("load_theme.rs")).unwrap();
let mut out_file = fs::File::create(out_path.join("load_theme.rs")).unwrap();
out_file.write_all(theme_load_code.as_bytes()).unwrap();
out_file.sync_data().unwrap();
}
@ -58,10 +73,10 @@ fn generate_hljs_loader(config: &serde_json::Value) {
let js_code = format!(
"const hljs = require(\\\"highlight.js/lib/highlight.js\\\");\n{}module.exports = hljs;",
highlight_lang);
let rs_code = std::fs::read_to_string("./src/hljs_tpl.rs").unwrap();
let rs_code = fs::read_to_string("./src/hljs_tpl.rs").unwrap();
let rs_code = format!("#[wasm_bindgen(inline_js = \"{}\")]\n{}", js_code, rs_code);
let out_path = std::path::PathBuf::from(std::env::var("OUT_DIR").unwrap());
let mut out_file = std::fs::File::create(out_path.join("load_hljs.rs")).unwrap();
let mut out_file = fs::File::create(out_path.join("load_hljs.rs")).unwrap();
out_file.write_all(rs_code.as_bytes()).unwrap();
out_file.sync_data().unwrap();
}