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// This is not a normal Rust module! It's included directly into v2.rs,
// possibly after build-time preprocessing. See v2.rs for an explanation
// of how this works.
/// Either a local directory path, or a Git-format "URL" (not necessarily a
/// real URL, alas).
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum Context {
/// A regular local directory.
Dir(PathBuf),
/// A Git repository, specified using any of the usual git repository
/// syntaxes.
GitUrl(String),
}
impl Context {
/// Construct a new Context from a string, identifying it as either a
/// local path or a remote git repository.
///
/// ```
/// use docker_compose::v2 as dc;
/// dc::Context::new("https://github.com/docker/docker.git");
/// dc::Context::new("src/myapp");
/// ```
pub fn new<S: AsRef<str>>(s: S) -> Context {
// Compile our regex just once. There's a nice macro for this if
// we're using nightly Rust, but lazy_static works on stable.
lazy_static! {
// See http://stackoverflow.com/a/34120821/12089
static ref GIT_PREFIX: Regex =
Regex::new("^(https?://|git://|github.com/|git@)").unwrap();
}
let s_ref = s.as_ref();
if GIT_PREFIX.is_match(&s_ref) {
Context::GitUrl(s_ref.to_owned())
} else {
Context::Dir(Path::new(&s_ref).to_owned())
}
}
}
impl_interpolatable_value!(Context);
impl FromStr for Context {
type Err = Void;
fn from_str(s: &str) -> Result<Self, Self::Err> {
Ok(Context::new(s))
}
}
impl fmt::Display for Context {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
match self {
&Context::Dir(ref path) => write!(f, "{}", path.display()),
&Context::GitUrl(ref url) => write!(f, "{}", url),
}
}
}
#[test]
fn context_may_contain_git_urls() {
// See http://stackoverflow.com/a/34120821/12089
let urls =
vec!("git://github.com/docker/docker",
"git@github.com:docker/docker.git",
"git@bitbucket.org:atlassianlabs/atlassian-docker.git",
"https://github.com/docker/docker.git",
"http://github.com/docker/docker.git",
"github.com/docker/docker.git");
for url in urls {
let context: Context = FromStr::from_str(url).unwrap();
assert_eq!(context, Context::GitUrl(url.to_string()));
assert_eq!(context.to_string(), url);
}
}
#[test]
fn context_may_contain_dir_paths() {
let paths = vec!(".", "./foo", "./foo/bar/");
for path in paths {
let context: Context = FromStr::from_str(path).unwrap();
assert_eq!(context, Context::Dir(Path::new(path).to_owned()));
assert_eq!(context.to_string(), path);
}
}