Add BM::command_rm_tags()

etc/cli.yml

@@ -149,6 +149,37 @@ subcommands:
                         required: true
                         takes_value: true
 
+            - rm_tags:
+                about: Remove tags from bookmark(s)
+                version: 0.1
+                author: Matthias Beyer <mail@beyermatthias.de>
+                args:
+                    - with_id:
+                        long: with-id
+                        help: Remove tags from bookmark with ID
+                        required: false
+                        takes_value: true
+
+                    - with_match:
+                        short: m
+                        long: with-match
+                        help: Remove tags from bookmark(s) which match this regex
+                        required: false
+                        takes_value: true
+
+                    - with_tags:
+                        long: with-tags
+                        help: Remove tags from bookmark(s) which have these tag(s)
+                        required: false
+                        takes_value: true
+
+                    - tags:
+                        short: t
+                        long: tags
+                        help: Remove these tags
+                        required: true
+                        takes_value: true
+
     - todo:
         about: Todo module
         version: 0.1

src/module/bm/mod.rs

@@ -160,6 +160,15 @@ impl<'a> BM<'a> {
         })
     }
 
+    fn command_rm_tags(&self, matches: &ArgMatches) -> bool {
+        self.alter_tags_in_files(matches, |old_tags, cli_tags| {
+            old_tags.clone()
+                .into_iter()
+                .filter(|tag| !cli_tags.contains(tag))
+                .collect()
+        })
+    }
+
     fn alter_tags_in_files<F>(&self, matches: &ArgMatches, generate_new_tags: F) -> bool
         where F: Fn(Vec<String>, &Vec<String>) -> Vec<String>
     {
@@ -313,6 +322,10 @@ impl<'a> Module<'a> for BM<'a> {
                 self.command_add_tags(matches.subcommand_matches("add_tags").unwrap())
             },
 
+            Some("rm_tags") => {
+                self.command_rm_tags(matches.subcommand_matches("rm_tags").unwrap())
+            },
+
             Some(_) | None => {
                 info!("No command given, doing nothing");
                 false