Revert "Fix get_namespace tag problems (#141)"

This reverts commit d8802aa.
PR #141 didn't actually fix the problem it said it did.

src/lib/compiler/mod.rs

@@ -108,7 +108,7 @@ impl Compiler {
         if target_filename.starts_with('!') {
             let ret = self.compile(
                 tokens,
-                Some(&files::get_namespace(&functions_dir).unwrap()),
+                Some(files::get_namespace(&functions_dir).unwrap()),
                 &files::get_subfolder_prefix(&functions_dir),
                 &global_macros,
                 true,
@@ -118,7 +118,7 @@ impl Compiler {
         } else {
             self.compile(
                 tokens,
-                Some(&files::get_namespace(&functions_dir).unwrap()),
+                Some(files::get_namespace(&functions_dir).unwrap()),
                 &files::get_subfolder_prefix(&functions_dir),
                 &global_macros,
                 false,

src/lib/files.rs

@@ -58,30 +58,24 @@ pub fn get_subfolder_prefix<P: AsRef<Path>>(functions_path: &P) -> String {
 }
 
 /// Get namespace (name of folder containing the main /functions)
-pub fn get_namespace<P: AsRef<Path>>(functions_path: &P) -> Result<String, &str> {
-    let namespace_str = {
-        let mut namespace_buf = functions_path.as_ref().to_path_buf();
-        while namespace_buf.is_file()
-            && namespace_buf.file_name().unwrap().to_str().unwrap() != "functions"
-        {
-            namespace_buf.pop();
-        }
-        namespace_buf.pop();
-
-        namespace_buf.to_str().unwrap().to_string()
-    };
+pub fn get_namespace<P: AsRef<Path>>(functions_path: &P) -> Result<&str, &str> {
+    let namespace_folder = functions_path
+        .as_ref()
+        .to_str()
+        .unwrap()
+        .split("functions")
+        .next()
+        .unwrap();
 
     let namespace_folder =
-        if let Some(new) = namespace_str.strip_suffix(|x: char| ['\\', '/'].contains(&x)) {
-            new.to_string()
+        if let Some(new) = namespace_folder.strip_suffix(|x: char| ['\\', '/'].contains(&x)) {
+            new
         } else {
-            namespace_str
+            namespace_folder
         };
 
     let folders = namespace_folder.split(|x: char| ['\\', '/'].contains(&x));
-    let last = folders.last().unwrap().to_string();
-
-    Ok(last)
+    Ok(folders.last().unwrap())
 }
 
 /// Convert multiple globs into a `Vec<PathBuf>`