Implement neofetch_util functions

Co-authored-by: Chiew Yan Wei <chiewyanwei@gmail.com>

crates/hyfetch/Cargo.toml

@@ -16,6 +16,7 @@ bpaf = { workspace = true, features = [] }
 chrono = { workspace = true, features = ["clock", "std"] }
 # derive_more = { workspace = true, features = ["std"] }
 indexmap = { workspace = true, features = ["std"] }
+regex = { workspace = true, features = ["perf", "std", "unicode"] }
 rgb = { workspace = true, features = [] }
 shell-words = { workspace = true, features = ["std"] }
 strum = { workspace = true, features = ["derive", "std"] }

crates/hyfetch/build.rs

@@ -87,7 +87,7 @@ impl Distro {
             if stripped.contains(['*', '"']) {
                 if let Some((prefix, suffix)) = stripped.split_once(r#""*""#) {
                     conds.push(format!(
-                        r###"name.starts_with("{prefix}") && name.ends_with("{suffix}")"###
+                        r#"name.starts_with("{prefix}") && name.ends_with("{suffix}")"#
                     ));
                     continue;
                 }
@@ -96,27 +96,27 @@ impl Distro {
 
             // Exact matches
             if m.trim_matches('*') == m {
-                conds.push(format!(r###"name == "{stripped}""###));
+                conds.push(format!(r#"name == "{stripped}""#));
                 continue;
             }
 
             // Both sides are *
             if m.starts_with('*') && m.ends_with('*') {
                 conds.push(format!(
-                    r###"name.starts_with("{stripped}") || name.ends_with("{stripped}")"###
+                    r#"name.starts_with("{stripped}") || name.ends_with("{stripped}")"#
                 ));
                 continue;
             }
 
             // Ends with *
             if m.ends_with('*') {
-                conds.push(format!(r###"name.starts_with("{stripped}")"###));
+                conds.push(format!(r#"name.starts_with("{stripped}")"#));
                 continue;
             }
 
             // Starts with *
             if m.starts_with('*') {
-                conds.push(format!(r###"name.ends_with("{stripped}")"###));
+                conds.push(format!(r#"name.ends_with("{stripped}")"#));
                 continue;
             }
         }

crates/hyfetch/src/neofetch_util.rs

@@ -7,6 +7,7 @@ use std::process::Command;
 use std::{env, fmt};
 
 use anyhow::{anyhow, Context, Result};
+use regex::Regex;
 use tracing::debug;
 
 use crate::distros::Distro;
@@ -64,12 +65,54 @@ where
     debug!(%distro, "distro name");
 
     if let Some(distro) = Distro::detect(&distro) {
-        return Ok(distro.ascii_art().to_owned());
+        return Ok(normalize_ascii(distro.ascii_art()));
     }
 
     todo!()
 }
 
+/// Gets distro ascii width and height, ignoring color code.
+pub fn ascii_size<S>(asc: S, neofetch_color_re: &Regex) -> (u8, u8)
+where
+    S: AsRef<str>,
+{
+    let asc = asc.as_ref();
+
+    let Some(width) = neofetch_color_re
+        .replace_all(asc, "")
+        .split('\n')
+        .map(|line| line.len())
+        .max()
+    else {
+        unreachable!();
+    };
+    let height = asc.split('\n').count();
+
+    (width as u8, height as u8)
+}
+
+/// Makes sure every line are the same width.
+fn normalize_ascii<S>(asc: S) -> String
+where
+    S: AsRef<str>,
+{
+    let asc = asc.as_ref();
+
+    let neofetch_color_re =
+        Regex::new(r"\$\{c[0-9]\}").expect("neofetch color regex should not be invalid");
+
+    let (w, _) = ascii_size(asc, &neofetch_color_re);
+
+    let mut buf = "".to_owned();
+    for line in asc.split('\n') {
+        let (line_w, _) = ascii_size(line, &neofetch_color_re);
+        let pad = " ".repeat((w - line_w) as usize);
+        buf.push_str(&format!("{line}{pad}\n"))
+    }
+
+    buf
+}
+
 /// Runs neofetch command, returning the piped stdout output.
 #[tracing::instrument(level = "debug")]
 fn run_neofetch_command_piped<S>(args: &[S]) -> Result<String>