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fixed a bug if file does not exists

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This commit is contained in:
Debanjan Basu 2024-05-19 01:49:52 +10:00
parent d0128474ae
commit 22cb06ce6d
1 changed files with 10 additions and 4 deletions
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14
veilid-core/build.rs
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@ -77,7 +77,13 @@ fn calculate_hash(lines: std::io::Lines<std::io::BufReader<std::fs::File>>) -> V
fn get_build_hash_and_capnp_version_hash<Q: AsRef<Path>>( fn get_build_hash_and_capnp_version_hash<Q: AsRef<Path>>(
output_path: Q, output_path: Q,
) -> (Option<Vec<u8>>, Option<Vec<u8>>) { ) -> (Option<Vec<u8>>, Option<Vec<u8>>) {
let lines = std::io::BufReader::new(std::fs::File::open(output_path).ok().unwrap()).lines(); let output_file = match std::fs::File::open(output_path).ok() {
// Returns a file handle if the file exists
Some(f) => f,
// Returns None, None if the file does not exist
None => return (None, None),
};
let lines = std::io::BufReader::new(output_file).lines();
let mut build_hash = None; let mut build_hash = None;
let mut capnp_version_hash = None; let mut capnp_version_hash = None;
for l in lines { for l in lines {
@ -97,7 +103,7 @@ fn make_build_hash<P: AsRef<Path>>(input_path: P) -> Vec<u8> {
calculate_hash(lines) calculate_hash(lines)
} }
fn append_hash_and_detected_capnp_version_hash<P: AsRef<Path>, Q: AsRef<Path>>( fn append_hash_and_desired_capnp_version_hash<P: AsRef<Path>, Q: AsRef<Path>>(
input_path: P, input_path: P,
output_path: Q, output_path: Q,
) { ) {
@ -157,8 +163,8 @@ fn do_capnp_build() {
.expect("compiling schema"); .expect("compiling schema");
// If successful, append a hash of the input to the output file // If successful, append a hash of the input to the output file
// Also append a hash of the detected capnp version to the output file // Also append a hash of the desired capnp version to the output file
append_hash_and_detected_capnp_version_hash("proto/veilid.capnp", "proto/veilid_capnp.rs"); append_hash_and_desired_capnp_version_hash("proto/veilid.capnp", "proto/veilid_capnp.rs");
} }
fn main() { fn main() {