+ option trim for template

This commit adds option to control if all secret contents inserting to
the template needs trim.

Will remove leading and trailing whitespace of the content to insert
while enable.

Default enabled.

module/template.nix

@@ -29,6 +29,10 @@ let
           Content of the template
         '';
       };
+      trim = (mkEnableOption { }) // {
+        default = true;
+        description = "remove trailing and leading whitespace of the secret content to insert";
+      };
       name = mkOption {
         type = types.str;
         default = submod.config._module.args.name;

src/cmd/deploy.rs

@@ -247,15 +247,26 @@ impl Profile {
                 let mut template = t.content.clone();
                 let hashstrs_of_it = t.parse_hash_str_list().expect("parse template");
 
+                let trim_the_insertial = t.trim;
+
                 hashstr_ctx_map
                     .iter()
                     .filter(|(k, _)| hashstrs_of_it.contains(k))
                     .for_each(|(k, v)| {
-                        // render
+                        // render and insert
                         trace!("template before process: {}", template);
+
+                        let raw_composed_insertial = String::from_utf8_lossy(v).to_string();
+
+                        let insertial = if trim_the_insertial {
+                            raw_composed_insertial.trim()
+                        } else {
+                            raw_composed_insertial.as_str()
+                        };
+
                         template = template.replace(
                             format!("{{{{ {} }}}}", hex::encode(k.as_slice())).as_str(),
-                            String::from_utf8_lossy(v).to_string().as_str(),
+                            insertial,
                         );
                     });
 

src/profile.rs

@@ -28,6 +28,7 @@ pub struct Secret {
 pub struct Template {
     pub name: String,
     pub content: String,
+    pub trim: bool,
     pub group: String,
     pub mode: String,
     pub owner: String,