40 lines
1.4 KiB
Rust
40 lines
1.4 KiB
Rust
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#[macro_use] extern crate quote;
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extern crate diesel;
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extern crate walkdir;
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use diesel::Connection;
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use diesel::prelude::*;
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use std::env;
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use std::fs::File;
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use std::io::prelude::*;
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use std::path::Path;
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use walkdir::WalkDir;
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fn main() {
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let out_dir = env::var("OUT_DIR").expect("cargo must set OUT_DIR");
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let db_path = Path::new(&out_dir).join("build.db");
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let db_path = db_path.to_str().expect("Will only work for Unicode-representable paths");
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let _ignore_failure = std::fs::remove_file(db_path);
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let connection = diesel::sqlite::SqliteConnection::establish(db_path)
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.expect(&format!("Error esablishing a database connection to {}", db_path));
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// Integer is a dummy placeholder. Compiling fails when passing ().
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diesel::expression::sql_literal::sql::<(diesel::types::Integer)>("PRAGMA foreign_keys = ON")
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.execute(&connection)
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.expect("Should be able to enable foreign keys");
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diesel::migrations::run_pending_migrations(&connection).unwrap();
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let infer_schema_path = Path::new(&out_dir).join("infer_schema.rs");
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let mut file = File::create(infer_schema_path).expect("Unable to open file for writing");
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file.write_all(quote! {
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infer_schema!(#db_path);
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}.as_str().as_bytes()).expect("Unable to write to file");
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for entry in WalkDir::new("migrations").into_iter().filter_map(|e| e.ok()) {
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println!("cargo:rerun-if-changed={}", entry.path().display());
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}
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}
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