refactor: refactor config

src/bin/copyrat.rs

@@ -1,6 +1,4 @@
 use clap::Clap;
-use std::fs::OpenOptions;
-use std::io::prelude::*;
 use std::io::{self, Read};
 
 use copyrat::{config::basic, run, ui::Selection};
@@ -25,19 +23,5 @@ fn main() {
     }
 
     let Selection { text, .. } = selection.unwrap();
-
-    // Write output to a target_path if provided, else print to original stdout.
-    match opt.target_path {
-        None => println!("{}", text),
-        Some(target) => {
-            let mut file = OpenOptions::new()
-                .create(true)
-                .truncate(true)
-                .write(true)
-                .open(target)
-                .expect("Unable to open the target file");
-
-            file.write_all(text.as_bytes()).unwrap();
-        }
-    }
+    println!("{}", text);
 }

src/config/basic.rs

@@ -1,6 +1,4 @@
 use clap::Clap;
-use std::collections::HashMap;
-use std::path;
 use std::str::FromStr;
 
 use crate::{
@@ -46,6 +44,10 @@ pub struct Config {
     #[clap(short, long)]
     pub unique_hint: bool,
 
+    /// Move focus back to first/last match.
+    #[clap(short = 'w', long)]
+    pub focus_wrap_around: bool,
+
     #[clap(flatten)]
     pub colors: ui::colors::UiColors,
 
@@ -53,10 +55,6 @@ pub struct Config {
     #[clap(long, arg_enum, default_value = "leading")]
     pub hint_alignment: ui::HintAlignment,
 
-    /// Move focus back to first/last match.
-    #[clap(long)]
-    pub focus_wrap_around: bool,
-
     /// Optional hint styling.
     ///
     /// Underline or surround the hint for increased visibility.
@@ -68,10 +66,6 @@ pub struct Config {
     #[clap(long, default_value = "{}",
                 parse(try_from_str = parse_chars))]
     pub hint_surroundings: (char, char),
-
-    /// Optional target path where to store the selected matches.
-    #[clap(short = 'o', long = "output", parse(from_os_str))]
-    pub target_path: Option<path::PathBuf>,
 }
 
 /// Type introduced due to parsing limitation,
@@ -100,53 +94,10 @@ impl FromStr for HintStyleArg {
 
 /// Try to parse a `&str` into a tuple of `char`s.
 fn parse_chars(src: &str) -> Result<(char, char), error::ParseError> {
-    if src.len() != 2 {
+    if src.chars().count() != 2 {
         return Err(error::ParseError::ExpectedSurroundingPair);
     }
 
     let chars: Vec<char> = src.chars().collect();
     Ok((chars[0], chars[1]))
 }
-
-impl Config {
-    /// Try parsing provided options, and update self with the valid values.
-    pub fn merge_map(
-        &mut self,
-        options: &HashMap<String, String>,
-    ) -> Result<(), error::ParseError> {
-        for (name, value) in options {
-            match name.as_ref() {
-                "@copyrat-alphabet" => {
-                    self.alphabet = alphabet::parse_alphabet(value)?;
-                }
-                "@copyrat-pattern-name" => {
-                    self.named_patterns = vec![regexes::parse_pattern_name(value)?]
-                }
-                "@copyrat-custom-pattern" => self.custom_patterns = vec![String::from(value)],
-                "@copyrat-reverse" => {
-                    self.reverse = value.parse::<bool>()?;
-                }
-                "@copyrat-unique-hint" => {
-                    self.unique_hint = value.parse::<bool>()?;
-                }
-
-                "@copyrat-match-fg" => self.colors.match_fg = ui::colors::parse_color(value)?,
-                "@copyrat-match-bg" => self.colors.match_bg = ui::colors::parse_color(value)?,
-                "@copyrat-focused-fg" => self.colors.focused_fg = ui::colors::parse_color(value)?,
-                "@copyrat-focused-bg" => self.colors.focused_bg = ui::colors::parse_color(value)?,
-                "@copyrat-hint-fg" => self.colors.hint_fg = ui::colors::parse_color(value)?,
-                "@copyrat-hint-bg" => self.colors.hint_bg = ui::colors::parse_color(value)?,
-
-                "@copyrat-hint-alignment" => {
-                    self.hint_alignment = ui::HintAlignment::from_str(&value)?
-                }
-                "@copyrat-hint-style" => self.hint_style = Some(HintStyleArg::from_str(&value)?),
-
-                // Ignore unknown options.
-                _ => (),
-            }
-        }
-
-        Ok(())
-    }
-}

src/config/tmux_bridge.rs

@@ -3,8 +3,12 @@ use std::collections::HashMap;
 use std::str::FromStr;
 
 use super::basic;
-use crate::comm::tmux;
-use crate::error;
+use crate::{
+    comm::tmux,
+    error,
+    textbuf::{alphabet, regexes},
+    ui,
+};
 
 /// Main configuration, parsed from command line.
 #[derive(Clap, Debug)]
@@ -16,15 +20,15 @@ pub struct Config {
     /// However, you should consider reading them from the config file (the
     /// default option) as this saves both a command call (about 10ms) and a
     /// Regex compilation.
-    #[clap(long)]
-    pub ignore_options_from_tmux: bool,
+    #[clap(short = 'n', long)]
+    pub ignore_tmux_options: bool,
 
-    /// Name of the copyrat temporary window.
+    /// Name of the copyrat temporary Tmux window.
     ///
     /// Copyrat is launched in a temporary window of that name. The only pane
     /// in this temp window gets swapped with the current active one for
     /// in-place searching, then swapped back and killed after we exit.
-    #[clap(long, default_value = "[copyrat]")]
+    #[clap(short = 'W', long, default_value = "[copyrat]")]
     pub window_name: String,
 
     /// Capture visible area or entire pane history.
@@ -47,32 +51,61 @@ impl Config {
     pub fn initialize() -> Result<Config, error::ParseError> {
         let mut config = Config::parse();
 
-        if !config.ignore_options_from_tmux {
+        if !config.ignore_tmux_options {
             let tmux_options: HashMap<String, String> = tmux::get_options("@copyrat-")?;
 
             // Override default values with those coming from tmux.
-            config.merge_map(&tmux_options)?;
+            let wrapped = &mut config.basic_config;
+
+            for (name, value) in &tmux_options {
+                match name.as_ref() {
+                    "@copyrat-capture" => config.capture_region = CaptureRegion::from_str(&value)?,
+                    "@copyrat-alphabet" => {
+                        wrapped.alphabet = alphabet::parse_alphabet(value)?;
+                    }
+                    "@copyrat-pattern-name" => {
+                        wrapped.named_patterns = vec![regexes::parse_pattern_name(value)?]
+                    }
+                    "@copyrat-custom-pattern" => {
+                        wrapped.custom_patterns = vec![String::from(value)]
+                    }
+                    "@copyrat-reverse" => {
+                        wrapped.reverse = value.parse::<bool>()?;
+                    }
+                    "@copyrat-unique-hint" => {
+                        wrapped.unique_hint = value.parse::<bool>()?;
+                    }
+
+                    "@copyrat-match-fg" => {
+                        wrapped.colors.match_fg = ui::colors::parse_color(value)?
+                    }
+                    "@copyrat-match-bg" => {
+                        wrapped.colors.match_bg = ui::colors::parse_color(value)?
+                    }
+                    "@copyrat-focused-fg" => {
+                        wrapped.colors.focused_fg = ui::colors::parse_color(value)?
+                    }
+                    "@copyrat-focused-bg" => {
+                        wrapped.colors.focused_bg = ui::colors::parse_color(value)?
+                    }
+                    "@copyrat-hint-fg" => wrapped.colors.hint_fg = ui::colors::parse_color(value)?,
+                    "@copyrat-hint-bg" => wrapped.colors.hint_bg = ui::colors::parse_color(value)?,
+
+                    "@copyrat-hint-alignment" => {
+                        wrapped.hint_alignment = ui::HintAlignment::from_str(&value)?
+                    }
+                    "@copyrat-hint-style" => {
+                        wrapped.hint_style = Some(basic::HintStyleArg::from_str(&value)?)
+                    }
+
+                    // Ignore unknown options.
+                    _ => (),
+                }
+            }
         }
 
         Ok(config)
     }
-    /// Try parsing provided options, and update self with the valid values.
-    /// Unknown options are simply ignored.
-    pub fn merge_map(
-        &mut self,
-        options: &HashMap<String, String>,
-    ) -> Result<(), error::ParseError> {
-        for (name, value) in options {
-            if let "@copyrat-capture" = name.as_ref() {
-                self.capture_region = CaptureRegion::from_str(&value)?;
-            }
-        }
-
-        // Pass the call to cli_options.
-        self.basic_config.merge_map(options)?;
-
-        Ok(())
-    }
 }
 
 #[derive(Clap, Debug)]

src/ui/colors.rs

@@ -47,12 +47,13 @@ mod tests {
     }
 }
 
-/// Holds color-related data, for clarity.
+/// Holds color-related data.
 ///
 /// - `focus_*` colors are used to render the currently focused matched text.
 /// - `normal_*` colors are used to render other matched text.
 /// - `hint_*` colors are used to render the hints.
 #[derive(Clap, Debug)]
+#[clap(about)] // Needed to avoid this doc comment to be used as overall `about`.
 pub struct UiColors {
     /// Foreground color for base text.
     #[clap(long, default_value = "bright-cyan", parse(try_from_str = parse_color))]