refactor(utils): remove unused functions

Author: xen0n

src/utils/shells.rs

@@ -9,80 +9,3 @@ pub fn is_autojump_sourced() -> bool {
         Err(_) => false,
     }
 }
-
-
-pub fn surround_quotes(s: String) -> String {
-    if in_bash() {
-        let mut result = String::with_capacity(s.len() + 2);
-        result.push('"');
-        result.push_str(&s);
-        result.push('"');
-        result
-    } else {
-        s
-    }
-}
-
-
-fn in_bash() -> bool {
-    in_bash_internal(env::var("SHELL"))
-}
-
-
-fn in_bash_internal(r: Result<String, env::VarError>) -> bool {
-    match r {
-        Ok(v) => v.contains("bash"),
-        Err(e) => {
-            match e {
-                env::VarError::NotPresent => false,
-                env::VarError::NotUnicode(s) => {
-                    let s = s.to_string_lossy();
-                    s.contains("bash")
-                }
-            }
-        }
-    }
-}
-
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-
-    #[test]
-    fn test_in_bash_internal_ok() {
-        assert_eq!(in_bash_internal(Ok(String::from("/bin/bash"))), true);
-        assert_eq!(in_bash_internal(Ok(String::from("/bin/zsh"))), false);
-    }
-
-
-    #[test]
-    fn test_in_bash_internal_err_absent() {
-        assert_eq!(in_bash_internal(Err(env::VarError::NotPresent)), false);
-    }
-
-
-    #[cfg(unix)]
-    #[test]
-    fn test_in_bash_internal_err_invalid_unicode() {
-        use std::ffi;
-        use std::os::unix::ffi::OsStrExt;
-
-        let invalid_unicode_factory = |s| {
-            let mut tmp = ffi::OsString::new();
-            tmp.push("/some/");
-            // "测试" (test) is "\xe6\xb5\x8b\xe8\xaf\x95"
-            // here \xaf is mutated to \xfa to simulate invalid OS strings
-            tmp.push(ffi::OsStr::from_bytes(&[0xe6, 0xb5, 0x8b, 0xe8, 0xfa, 0x95]));
-            tmp.push("/prefix/bin/");
-            tmp.push(s);
-            Err(env::VarError::NotUnicode(tmp))
-        };
-
-        let invalid_unicode_bash = invalid_unicode_factory("bash");
-        assert_eq!(in_bash_internal(invalid_unicode_bash), true);
-        let invalid_unicode_zsh = invalid_unicode_factory("zsh");
-        assert_eq!(in_bash_internal(invalid_unicode_zsh), false);
-    }
-}