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Avoid re-fetching Unicode data

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If the unicode-downloads folder already exists, we likely just fetched the data,
so don't make any further network requests. Unicode versions are released rarely
enough that this doesn't matter much in practice.
This commit is contained in:
Mark Rousskov 2020-03-19 10:55:58 -04:00
parent f4c675c476
commit 903f67d599
1 changed files with 8 additions and 3 deletions
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11
src/tools/unicode-table-generator/src/unicode_download.rs
View file

@ -11,10 +11,15 @@ static RESOURCES: &[&str] =
pub fn fetch_latest() {
let directory = Path::new(UNICODE_DIRECTORY);
if directory.exists() {
eprintln!(
"Not refetching unicode data, already exists, please delete {:?} to regenerate",
directory
);
return;
}
if let Err(e) = std::fs::create_dir_all(directory) {
if e.kind() != std::io::ErrorKind::AlreadyExists {
panic!("Failed to create {:?}: {}", UNICODE_DIRECTORY, e);
}
panic!("Failed to create {:?}: {}", UNICODE_DIRECTORY, e);
}
let output = Command::new("curl").arg(URL_PREFIX.to_owned() + README).output().unwrap();
if !output.status.success() {