Revert "Basic URL canonicalization. Fixes #84"

Author: brson

src/cargo/sources/git/source.rs

@@ -67,10 +67,7 @@ fn ident(location: &Location) -> String {
             let last = path.components().last().unwrap();
             str::from_utf8(last).unwrap().to_str()
         }
-        Remote(ref url) => {
-            let path = canonicalize_url(url.path.as_slice());
-            path.as_slice().split('/').last().unwrap().to_str()
-        }
+        Remote(ref url) => url.path.as_slice().split('/').last().unwrap().to_str()
     };
 
     let ident = if ident.as_slice() == "" {
@@ -79,47 +76,7 @@ fn ident(location: &Location) -> String {
         ident
     };
 
-    let location = canonicalize_url(location.to_str().as_slice());
-
-    format!("{}-{}", ident, to_hex(hasher.hash(&location.as_slice())))
-}
-
-fn strip_trailing_slash<'a>(path: &'a str) -> &'a str {
-    // Remove the trailing '/' so that 'split' doesn't give us
-    // an empty string, making '../foo/' and '../foo' both
-    // result in the name 'foo' (#84)
-    if path.as_bytes().last() != Some(&('/' as u8)) {
-        path.clone()
-    } else {
-        path.slice(0, path.len() - 1)
-    }
-}
-
-// Some hacks and heuristics for making equivalent URLs hash the same
-fn canonicalize_url(url: &str) -> String {
-    let url = strip_trailing_slash(url);
-
-    // HACKHACK: For github URL's specifically just lowercase
-    // everything.  GitHub traits both the same, but they hash
-    // differently, and we're gonna be hashing them. This wants a more
-    // general solution, and also we're almost certainly not using the
-    // same case conversion rules that GitHub does. (#84)
-
-    let lower_url = url.chars().map(|c|c.to_lowercase()).collect::<String>();
-    let url = if lower_url.as_slice().contains("github.com") {
-        lower_url
-    } else {
-        url.to_string()
-    };
-
-    // Repos generally can be accessed with or w/o '.git'
-    let url = if !url.as_slice().ends_with(".git") {
-        url
-    } else {
-        url.as_slice().slice(0, url.len() - 4).to_string()
-    };
-
-    return url;
+    format!("{}-{}", ident, to_hex(hasher.hash(&location.to_str())))
 }
 
 impl<'a, 'b> Show for GitSource<'a, 'b> {
@@ -193,26 +150,6 @@ mod test {
         assert_eq!(ident.as_slice(), "_empty-fc065c9b6b16fc00");
     }
 
-    #[test]
-    fn test_canonicalize_idents_by_stripping_trailing_url_slash() {
-        let ident1 = ident(&Remote(url("https://github.com/PistonDevelopers/piston/")));
-        let ident2 = ident(&Remote(url("https://github.com/PistonDevelopers/piston")));
-        assert_eq!(ident1, ident2);
-    }
-
-    #[test]
-    fn test_canonicalize_idents_by_lowercasing_github_urls() {
-        let ident1 = ident(&Remote(url("https://github.com/PistonDevelopers/piston")));
-        let ident2 = ident(&Remote(url("https://github.com/pistondevelopers/piston")));
-        assert_eq!(ident1, ident2);
-    }
-
-    #[test]
-    fn test_canonicalize_idents_by_stripping_dot_git() {
-        let ident1 = ident(&Remote(url("https://github.com/PistonDevelopers/piston")));
-        let ident2 = ident(&Remote(url("https://github.com/PistonDevelopers/piston.git")));
-        assert_eq!(ident1, ident2);
-    }
 
     fn url(s: &str) -> Url {
         url::from_str(s).unwrap()