folder renaming configuration

concerns #27

melib/src/mailbox/backends/maildir.rs

@@ -490,6 +490,9 @@ impl BackendFolder for MaildirFolder {
     fn name(&self) -> &str {
         &self.name
     }
+    fn change_name(&mut self, s: &str) {
+        self.name = s.to_string();
+    }
     fn children(&self) -> &Vec<usize> {
         &self.children
     }

melib/src/mailbox/backends/mod.rs

@@ -177,6 +177,7 @@ impl fmt::Debug for BackendOpGenerator {
 pub trait BackendFolder: Debug {
     fn hash(&self) -> u64;
     fn name(&self) -> &str;
+    fn change_name(&mut self, &str);
     fn clone(&self) -> Folder;
     fn children(&self) -> &Vec<usize>;
 }
@@ -193,6 +194,7 @@ impl BackendFolder for DummyFolder {
     fn name(&self) -> &str {
         ""
     }
+    fn change_name(&mut self, _s: &str) {}
     fn clone(&self) -> Folder {
         folder_default()
     }

melib/src/mailbox/mod.rs

@@ -30,7 +30,7 @@ pub use self::email::*;
 /* Mail backends. Currently only maildir is supported */
 pub mod backends;
 use error::Result;
-use mailbox::backends::{folder_default, Folder, MailBackend};
+use mailbox::backends::{folder_default, Folder};
 pub mod thread;
 pub use mailbox::thread::{build_threads, Container, Threads, SortOrder, SortField};
 

ui/src/conf/mod.rs

@@ -39,6 +39,9 @@ pub struct FileAccount {
 }
 
 impl FileAccount {
+    pub fn folders(&self) -> Option<&HashMap<String, String>> {
+        self.folders.as_ref()
+    }
     pub fn folder(&self) -> &str {
         &self.root_folder
     }

ui/src/types/accounts.rs

@@ -92,7 +92,18 @@ impl Account {
         self.folders.len()
     }
     pub fn list_folders(&self) -> Vec<Folder> {
-        self.backend.folders()
+        let mut folders = self.backend.folders();
+        if let Some(folder_renames) = self.settings.conf().folders() {
+            eprintln!("folder renames: {:?}", folder_renames);
+            for f in &mut folders {
+                eprintln!("f.name() is {}", f.name());
+                if let Some(name) = folder_renames.get(&f.name().to_ascii_lowercase()) {
+                    eprintln!("name is {}", name);
+                    f.change_name(name);
+                }
+            }
+        }
+        folders
     }
     pub fn name(&self) -> &str {
         &self.name