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use std::{
collections::BTreeMap,
path::{Path, PathBuf},
sync::Mutex,
};
pub use bstr;
use bstr::{BStr, ByteSlice};
use nom::error::VerboseError;
use once_cell::sync::Lazy;
pub use tempfile;
static SCRIPT_IDENTITY: Lazy<Mutex<BTreeMap<PathBuf, u32>>> = Lazy::new(|| Mutex::new(BTreeMap::new()));
pub fn hex_to_id(hex: &str) -> git_hash::ObjectId {
git_hash::ObjectId::from_hex(hex.as_bytes()).expect("40 bytes hex")
}
pub fn fixture_path(path: impl AsRef<str>) -> PathBuf {
PathBuf::from("tests").join("fixtures").join(path.as_ref())
}
pub fn scripted_fixture_repo_read_only(script_name: &str) -> std::result::Result<PathBuf, Box<dyn std::error::Error>> {
scripted_fixture_repo_read_only_with_args(script_name, None)
}
pub fn scripted_fixture_repo_writable(
script_name: &str,
) -> std::result::Result<tempfile::TempDir, Box<dyn std::error::Error>> {
scripted_fixture_repo_writable_with_args(script_name, None)
}
pub fn scripted_fixture_repo_writable_with_args(
script_name: &str,
args: impl IntoIterator<Item = &'static str>,
) -> std::result::Result<tempfile::TempDir, Box<dyn std::error::Error>> {
let ro_dir = scripted_fixture_repo_read_only_with_args(script_name, args)?;
let dst = tempfile::TempDir::new()?;
fs_extra::copy_items(
&std::fs::read_dir(ro_dir)?
.map(|e| e.map(|e| e.path()))
.collect::<Result<Vec<_>, _>>()?,
dst.path(),
&fs_extra::dir::CopyOptions {
overwrite: false,
skip_exist: false,
copy_inside: false,
content_only: false,
..Default::default()
},
)
.map_err(|err| std::io::Error::new(std::io::ErrorKind::Other, err))?;
Ok(dst)
}
pub fn scripted_fixture_repo_read_only_with_args(
script_name: &str,
args: impl IntoIterator<Item = &'static str>,
) -> std::result::Result<PathBuf, Box<dyn std::error::Error>> {
let script_path = fixture_path(script_name);
let args: Vec<String> = args.into_iter().map(Into::into).collect();
let mut map = SCRIPT_IDENTITY.lock().unwrap();
let script_identity = map
.entry(args.iter().fold(script_path.clone(), |p, a| p.join(a)))
.or_insert_with(|| {
let crc_value = crc::Crc::<u32>::new(&crc::CRC_32_CKSUM);
let mut crc_digest = crc_value.digest();
crc_digest.update(&std::fs::read(&script_path).expect("file can be read entirely"));
for arg in args.iter() {
crc_digest.update(arg.as_bytes());
}
crc_digest.finalize()
})
.to_owned();
let script_result_directory = fixture_path(
Path::new("generated")
.join(format!("{}", script_identity))
.to_string_lossy(),
);
if !script_result_directory.is_dir() {
std::fs::create_dir_all(&script_result_directory)?;
let script_absolute_path = std::env::current_dir()?.join(script_path);
let output = std::process::Command::new("bash")
.arg(script_absolute_path)
.args(args)
.stdout(std::process::Stdio::piped())
.stderr(std::process::Stdio::piped())
.current_dir(&script_result_directory)
.env_remove("GIT_DIR")
.env("GIT_AUTHOR_DATE", "2000-01-01 00:00:00 +0000")
.env("GIT_AUTHOR_EMAIL", "author@example.com")
.env("GIT_AUTHOR_NAME", "author")
.env("GIT_COMMITTER_DATE", "2000-01-02 00:00:00 +0000")
.env("GIT_COMMITTER_EMAIL", "committer@example.com")
.env("GIT_COMMITTER_NAME", "committer")
.output()?;
assert!(
output.status.success(),
"repo script failed: stdout: {}\nstderr: {}",
output.stdout.as_bstr(),
output.stderr.as_bstr()
);
}
Ok(script_result_directory)
}
pub fn to_bstr_err(err: nom::Err<VerboseError<&[u8]>>) -> VerboseError<&BStr> {
let err = match err {
nom::Err::Error(err) | nom::Err::Failure(err) => err,
nom::Err::Incomplete(_) => unreachable!("not a streaming parser"),
};
VerboseError {
errors: err.errors.into_iter().map(|(i, v)| (i.as_bstr(), v)).collect(),
}
}