refactor: refactor

src/lib.rs

@@ -1,6 +1,4 @@
 use clap::Clap;
-use std::fs::OpenOptions;
-use std::io::prelude::*;
 use std::path;
 
 pub mod alphabets;
@@ -14,12 +12,12 @@ pub mod view;
 /// # Note
 ///
 /// Maybe the decision to move ownership is a bit bold.
-pub fn run(buffer: String, opt: Opt) {
+pub fn run(buffer: String, opt: &Opt) -> String {
     let lines: Vec<&str> = buffer.split('\n').collect();
 
     let mut state = state::State::new(&lines, &opt.alphabet, &opt.custom_regex);
 
-    let hint_style = match opt.hint_style {
+    let hint_style = match &opt.hint_style {
         None => None,
         Some(style) => match style {
             HintStyleCli::Underline => Some(view::HintStyle::Underline),
@@ -37,7 +35,7 @@ pub fn run(buffer: String, opt: Opt) {
             opt.multi_selection,
             opt.reverse,
             opt.unique,
-            opt.hint_alignment,
+            &opt.hint_alignment,
             &opt.colors,
             hint_style,
         );
@@ -64,19 +62,7 @@ pub fn run(buffer: String, opt: Opt) {
             .join("\n")
     };
 
-    match opt.target_path {
-        None => println!("{}", output),
-        Some(target) => {
-            let mut file = OpenOptions::new()
-                .create(true)
-                .truncate(true)
-                .write(true)
-                .open(target)
-                .expect("Unable to open the target file");
-
-            file.write(output.as_bytes()).unwrap();
-        }
-    }
+    output
 }
 
 /// Main configuration, parsed from command line.
@@ -108,7 +94,7 @@ pub struct Opt {
     unique: bool,
 
     /// Align hint with its match.
-    #[clap(short = "a", long, arg_enum, default_value = "Leading")]
+    #[clap(short = "a", long, arg_enum, default_value = "leading")]
     hint_alignment: view::HintAlignment,
 
     /// Additional regex patterns.
@@ -129,11 +115,11 @@ pub struct Opt {
 
     /// Target path where to store the selected matches.
     #[clap(short = "o", long = "output", parse(from_os_str))]
-    target_path: Option<path::PathBuf>,
+    pub target_path: Option<path::PathBuf>,
 
     /// Describes if the uppercased marker should be added to the output,
     /// indicating if hint key was uppercased. This is only used by
-    /// tmux-copyrat, so it is skipped from clap configuration.
+    /// tmux-copyrat, so it is hidden (skipped) from the CLI.
     #[clap(skip)]
     uppercased_marker: bool,
 }

src/main.rs

@@ -1,4 +1,6 @@
 use clap::Clap;
+use std::fs::OpenOptions;
+use std::io::prelude::*;
 use std::io::{self, Read};
 
 use copyrat::{run, Opt};
@@ -13,5 +15,22 @@ fn main() {
     let mut buffer = String::new();
     handle.read_to_string(&mut buffer).unwrap();
 
-    run(buffer, opt);
+    // Execute copyrat over the buffer (will take control over stdout).
+    // This returns the selected matches.
+    let output: String = run(buffer, &opt);
+
+    // Write output to a target_path if provided, else print to original stdout.
+    match opt.target_path {
+        None => println!("{}", output),
+        Some(target) => {
+            let mut file = OpenOptions::new()
+                .create(true)
+                .truncate(true)
+                .write(true)
+                .open(target)
+                .expect("Unable to open the target file");
+
+            file.write(output.as_bytes()).unwrap();
+        }
+    }
 }

src/view.rs

@@ -14,7 +14,7 @@ pub struct View<'a> {
     matches: Vec<state::Match<'a>>,
     focus_index: usize,
     multi: bool,
-    hint_alignment: HintAlignment,
+    hint_alignment: &'a HintAlignment,
     rendering_colors: &'a ViewColors,
     hint_style: Option<HintStyle>,
 }
@@ -91,7 +91,7 @@ impl<'a> View<'a> {
         multi: bool,
         reversed: bool,
         unique: bool,
-        hint_alignment: HintAlignment,
+        hint_alignment: &'a HintAlignment,
         rendering_colors: &'a ViewColors,
         hint_style: Option<HintStyle>,
     ) -> View<'a> {
@@ -703,7 +703,7 @@ Barcelona https://en.wikipedia.org/wiki/Barcelona -   ";
             matches: vec![], // no matches
             focus_index: 0,
             multi: false,
-            hint_alignment,
+            hint_alignment: &hint_alignment,
             rendering_colors: &rendering_colors,
             hint_style: None,
         };
@@ -764,7 +764,7 @@ Barcelona https://en.wikipedia.org/wiki/Barcelona -   ";
             multi,
             reversed,
             unique,
-            hint_alignment,
+            &hint_alignment,
             &rendering_colors,
             hint_style,
         );