The Rust side of cleanpath_conservative

src/cleanpath_conservative.rs

@@ -0,0 +1,110 @@
+use prepend_prefix::prepend_prefix;
+use basename::basename;
+use dirname::dirname;
+use chop_basename::chop_basename;
+extern crate array_tool;
+use self::array_tool::vec::Shift;
+use std::path::MAIN_SEPARATOR;
+
+pub fn cleanpath_conservative(path: &str) -> String {
+  let sep = MAIN_SEPARATOR.to_string();
+  let mut names: Vec<String> = vec![];
+  let mut pre = path.to_string();
+  loop {
+    match chop_basename(&pre) {
+      Some((ref p, ref base)) => {
+        pre = p.to_string();
+        match base.as_ref() {
+          "." => {},
+          _ => names.unshift(base.to_string()),
+        }
+      },
+      None => break,
+    }
+  }
+  // // Windows Feature
+  //
+  // ```ruby
+  // pre.tr!(File::ALT_SEPARATOR, File::SEPARATOR) if File::ALT_SEPARATOR
+  // ```
+  //
+  if basename(&pre, "").contains(&sep) {
+    loop {
+      if names.first() == Some(&"..".to_string()) {
+        let _ = names.shift();
+      } else {
+        break
+      }
+    }
+  }
+
+  if names.is_empty() {
+    return dirname(&pre).to_string();
+  }
+
+  if names.last() != Some(&"..".to_string()) && basename(&path, "") == &".".to_string() {
+    names.push(".".to_string());
+  }
+
+  let result = prepend_prefix(&pre, &names.join(&sep)[..]);
+  let last = names.last();
+
+  if !(last == Some(&".".to_string()) || last == Some(&"..".to_string())) &&
+    chop_basename(path).map(|(a, b)| a.len() + b.len()).unwrap() < path.len() {
+    format!("{}{}", last.unwrap(), MAIN_SEPARATOR)
+  } else {
+    result
+  }
+}
+
+#[test]
+fn it_conservatively_cleans_the_path() {
+  assert_eq!(cleanpath_conservative("/"),      "/");
+  assert_eq!(cleanpath_conservative(""),      ".");
+  assert_eq!(cleanpath_conservative("."),      ".");
+  assert_eq!(cleanpath_conservative(".."),     "..");
+  assert_eq!(cleanpath_conservative("a"),      "a");
+  assert_eq!(cleanpath_conservative("/."),      "/");
+  assert_eq!(cleanpath_conservative("/.."),      "/");
+  assert_eq!(cleanpath_conservative("/a"),     "/a");
+  assert_eq!(cleanpath_conservative("./"),      ".");
+  assert_eq!(cleanpath_conservative("../"),     "..");
+  assert_eq!(cleanpath_conservative("a/"),     "a/");
+  assert_eq!(cleanpath_conservative("a//b"),    "a/b");
+  assert_eq!(cleanpath_conservative("a/."),    "a/.");
+  assert_eq!(cleanpath_conservative("a/./"),    "a/.");
+  assert_eq!(cleanpath_conservative("a/../"),   "a/..");
+  assert_eq!(cleanpath_conservative("/a/."),   "/a/.");
+  assert_eq!(cleanpath_conservative("./.."),     "..");
+  assert_eq!(cleanpath_conservative("../."),     "..");
+  assert_eq!(cleanpath_conservative("./../"),     "..");
+  assert_eq!(cleanpath_conservative(".././"),     "..");
+  assert_eq!(cleanpath_conservative("/./.."),      "/");
+  assert_eq!(cleanpath_conservative("/../."),      "/");
+  assert_eq!(cleanpath_conservative("/./../"),      "/");
+  assert_eq!(cleanpath_conservative("/.././"),      "/");
+  assert_eq!(cleanpath_conservative("a/b/c"),  "a/b/c");
+  assert_eq!(cleanpath_conservative("./b/c"),    "b/c");
+  assert_eq!(cleanpath_conservative("a/./c"),    "a/c");
+  assert_eq!(cleanpath_conservative("a/b/."),  "a/b/.");
+  assert_eq!(cleanpath_conservative("a/../."),   "a/..");
+  assert_eq!(cleanpath_conservative("/../.././../a"),     "/a");
+  assert_eq!(cleanpath_conservative("a/b/../../../../c/../d"), "a/b/../../../../c/../d");
+;
+// Future Windows Support
+//
+// DOSISH = File::ALT_SEPARATOR != nil
+// DOSISH_DRIVE_LETTER = File.dirname("A:") == "A:."
+// DOSISH_UNC = File.dirname("//") == "//"
+//
+// 
+//   if DOSISH
+//     assert_eq!(cleanpath_conservative, 'c:/foo/bar', 'c:\\foo\\bar')
+//   end
+// 
+//   if DOSISH_UNC
+//     assert_eq!(cleanpath_conservative, '//',     '//')
+//   else
+//     assert_eq!(cleanpath_conservative, '/',      '//')
+//   end
+}

src/lib.rs

@@ -17,6 +17,7 @@ mod pathname;
 mod basename;
 mod chop_basename;
 mod cleanpath_aggressive;
+mod cleanpath_conservative;
 mod dirname;
 mod extname;
 mod pathname_sys;
@@ -66,7 +67,9 @@ methods!(
     pathname::pn_cleanpath_aggressive(pth)
   }
 
-  // fn r_cleanpath_conservative(pth: RString){}
+  fn pub_cleanpath_conservative(pth: RString) -> RString {
+    pathname::pn_cleanpath_conservative(pth)
+  }
 
   // fn r_del_trailing_separator(pth: RString){}
 

src/pathname.rs

@@ -2,6 +2,7 @@ use helpers::*;
 use basename;
 use chop_basename;
 use cleanpath_aggressive;
+use cleanpath_conservative;
 use dirname;
 use extname;
 use plus;
@@ -129,7 +130,13 @@ pub fn pn_cleanpath_aggressive(pth: MaybeString) -> RString {
   RString::new(&path)
 }
 
-// pub fn pn_cleanpath_conservative(pth: MaybeString){}
+pub fn pn_cleanpath_conservative(pth: MaybeString) -> RString {
+  let path = cleanpath_conservative::cleanpath_conservative(
+    pth.ok().unwrap_or(RString::new("")).to_str()
+  );
+
+  RString::new(&path)
+}
 
 // pub fn pn_del_trailing_separator(pth: MaybeString){}