Implement recoloring of ascii art that don't use fore-back

Cargo.lock

@@ -226,6 +226,7 @@ dependencies = [
  "tracing",
  "tracing-subscriber",
  "unicode-normalization",
+ "unicode-segmentation",
 ]
 
 [[package]]
@@ -711,6 +712,12 @@ dependencies = [
  "tinyvec",
 ]
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d4c87d22b6e3f4a18d4d40ef354e97c90fcb14dd91d7dc0aa9d8a1172ebf7202"
+
 [[package]]
 name = "valuable"
 version = "0.1.0"

Cargo.toml

@@ -34,3 +34,4 @@ thiserror = { version = "1.0.61", default-features = false }
 tracing = { version = "0.1.40", default-features = false }
 tracing-subscriber = { version = "0.3.18", default-features = false }
 unicode-normalization = { version = "0.1.23", default-features = false }
+unicode-segmentation = { version = "1.11.0", default-features = false }

crates/hyfetch/Cargo.toml

@@ -29,6 +29,7 @@ tempfile = { workspace = true, features = [] }
 thiserror = { workspace = true, features = [] }
 tracing = { workspace = true, features = ["attributes", "std"] }
 tracing-subscriber = { workspace = true, features = ["ansi", "fmt", "smallvec", "std", "tracing-log"] }
+unicode-segmentation = { workspace = true, features = [] }
 
 [build-dependencies]
 indexmap = { workspace = true, features = ["std"] }

crates/hyfetch/src/neofetch_util.rs

@@ -6,7 +6,7 @@ use std::os::unix::process::ExitStatusExt as _;
 use std::path::{Path, PathBuf};
 use std::process::{Command, ExitStatus};
 use std::sync::OnceLock;
-use std::{env, fmt, iter};
+use std::{env, fmt};
 
 use aho_corasick::AhoCorasick;
 use anyhow::{anyhow, Context, Result};
@@ -83,11 +83,14 @@ impl ColorAlignment {
                 // Add new colors
                 let asc = match self {
                     Self::Horizontal { .. } => {
-                        let length = lines.len();
-                        let length: u8 = length.try_into().expect("`length` should fit in `u8`");
-                        let ColorProfile { colors } = color_profile
-                            .with_length(length)
-                            .context("failed to spread color profile to length")?;
+                        let ColorProfile { colors } = {
+                            let length = lines.len();
+                            let length: u8 =
+                                length.try_into().expect("`length` should fit in `u8`");
+                            color_profile
+                                .with_length(length)
+                                .context("failed to spread color profile to length")?
+                        };
                         let mut asc = String::new();
                         for (i, line) in lines.into_iter().enumerate() {
                             let line = line.replace(
@@ -119,18 +122,68 @@ impl ColorAlignment {
                     let ac = NEOFETCH_COLORS_AC
                         .get_or_init(|| AhoCorasick::new(NEOFETCH_COLOR_PATTERNS).unwrap());
                     const N: usize = NEOFETCH_COLOR_PATTERNS.len();
-                    let replacements: [&str; N] = iter::repeat("")
-                        .take(N)
-                        .collect::<Vec<_>>()
-                        .try_into()
-                        .unwrap();
-                    ac.replace_all(&asc, &replacements)
+                    const REPLACEMENTS: [&str; N] = [""; N];
+                    ac.replace_all(&asc, &REPLACEMENTS)
                 };
 
                 asc
             },
             Self::Horizontal { fore_back: None } | Self::Vertical { fore_back: None } => {
-                todo!()
+                // Remove existing colors
+                let asc = {
+                    let ac = NEOFETCH_COLORS_AC
+                        .get_or_init(|| AhoCorasick::new(NEOFETCH_COLOR_PATTERNS).unwrap());
+                    const N: usize = NEOFETCH_COLOR_PATTERNS.len();
+                    const REPLACEMENTS: [&str; N] = [""; N];
+                    ac.replace_all(&asc, &REPLACEMENTS)
+                };
+
+                let lines: Vec<_> = asc.split('\n').collect();
+
+                // Add new colors
+                match self {
+                    Self::Horizontal { .. } => {
+                        let ColorProfile { colors } = {
+                            let length = lines.len();
+                            let length: u8 =
+                                length.try_into().expect("`length` should fit in `u8`");
+                            color_profile
+                                .with_length(length)
+                                .context("failed to spread color profile to length")?
+                        };
+                        let mut asc = String::new();
+                        for (i, line) in lines.into_iter().enumerate() {
+                            asc.push_str(
+                                &colors[i]
+                                    .to_ansi_string(color_mode, ForegroundBackground::Foreground),
+                            );
+                            asc.push_str(line);
+                            asc.push_str(&reset);
+                            asc.push('\n');
+                        }
+                        asc
+                    },
+                    Self::Vertical { .. } => {
+                        let mut asc = String::new();
+                        for line in lines {
+                            let line = color_profile
+                                .color_text(
+                                    line,
+                                    color_mode,
+                                    ForegroundBackground::Foreground,
+                                    false,
+                                )
+                                .context("failed to color text using color profile")?;
+                            asc.push_str(&line);
+                            asc.push_str(&reset);
+                            asc.push('\n');
+                        }
+                        asc
+                    },
+                    _ => {
+                        unreachable!();
+                    },
+                }
             },
             Self::Custom { colors } => {
                 todo!()
@@ -193,11 +246,22 @@ where
     };
     debug!(%distro, "distro name");
 
+    // Try new codegen-based detection method
     if let Some(distro) = Distro::detect(&distro) {
         return Ok(normalize_ascii(distro.ascii_art()));
     }
 
-    todo!()
+    debug!(%distro, "could not find a match for distro; falling back to neofetch");
+
+    // Old detection method that calls neofetch
+    let asc = run_neofetch_command_piped(&["print_ascii", "--ascii_distro", distro.as_ref()])
+        .context("failed to get ascii art from neofetch")?;
+
+    // Unescape backslashes here because backslashes are escaped in neofetch for
+    // printf
+    let asc = asc.replace(r"\\", r"\");
+
+    Ok(normalize_ascii(asc))
 }
 
 #[tracing::instrument(level = "debug")]
@@ -231,12 +295,8 @@ where
         let ac =
             NEOFETCH_COLORS_AC.get_or_init(|| AhoCorasick::new(NEOFETCH_COLOR_PATTERNS).unwrap());
         const N: usize = NEOFETCH_COLOR_PATTERNS.len();
-        let replacements: [&str; N] = iter::repeat("")
-            .take(N)
-            .collect::<Vec<_>>()
-            .try_into()
-            .unwrap();
-        ac.replace_all(asc, &replacements)
+        const REPLACEMENTS: [&str; N] = [""; N];
+        ac.replace_all(asc, &REPLACEMENTS)
     };
 
     let Some(width) = asc.split('\n').map(|line| line.len()).max() else {

crates/hyfetch/src/presets.rs

@@ -7,9 +7,10 @@ use palette::num::ClampAssign;
 use palette::{Hsl, IntoColorMut, LinSrgb, Srgb};
 use serde::{Deserialize, Serialize};
 use strum::{EnumString, VariantNames};
+use unicode_segmentation::UnicodeSegmentation;
 
-use crate::color_util::Lightness;
-use crate::types::LightDark;
+use crate::color_util::{ForegroundBackground, Lightness, ToAnsiString};
+use crate::types::{AnsiMode, LightDark};
 
 #[derive(Copy, Clone, Hash, Debug, Deserialize, EnumString, Serialize, VariantNames)]
 #[serde(rename_all = "kebab-case")]
@@ -290,10 +291,10 @@ impl Preset {
             },
 
             // sourced from https://www.flagcolorcodes.com/intergender
-            Self::Intergender => ColorProfile::from_hex_colors(
-                // todo: use weighted spacing
-                vec!["#900DC2", "#900DC2", "#FFE54F", "#900DC2", "#900DC2"],
-            ),
+            Self::Intergender => {
+                ColorProfile::from_hex_colors(vec!["#900DC2", "#FFE54F", "#900DC2"])
+                    .and_then(|c| c.with_weights(vec![2, 1, 2]))
+            },
 
             Self::Lesbian => ColorProfile::from_hex_colors(vec![
                 "#D62800", "#FF9B56", "#FFFFFF", "#D462A6", "#A40062",
@@ -440,7 +441,7 @@ impl ColorProfile {
         // How many copies of each color should be displayed at least?
         let repeats = (length as f32 / orig_len as f32).floor() as usize;
         let repeats: u8 = repeats.try_into().expect("`repeats` should fit in `u8`");
-        let mut weights: Vec<u8> = iter::repeat(repeats).take(orig_len as usize).collect();
+        let mut weights = vec![repeats; orig_len as usize];
 
         // How many extra spaces left?
         let mut extras = length % orig_len;
@@ -467,6 +468,50 @@ impl ColorProfile {
         self.with_weights(weights)
     }
 
+    /// Colors a text.
+    ///
+    /// # Arguments
+    ///
+    /// * `foreground_background` - Whether the color is shown on the foreground
+    ///   text or the background block
+    /// * `space_only` - Whether to only color spaces
+    pub fn color_text<S>(
+        &self,
+        txt: S,
+        color_mode: AnsiMode,
+        foreground_background: ForegroundBackground,
+        space_only: bool,
+    ) -> Result<String>
+    where
+        S: AsRef<str>,
+    {
+        let txt = txt.as_ref();
+
+        let ColorProfile { colors } = {
+            let length = txt.len();
+            let length: u8 = length.try_into().expect("`length` should fit in `u8`");
+            self.with_length(length)
+                .context("failed to spread color profile to length")?
+        };
+
+        let mut buf = String::new();
+        let txt: Vec<&str> = txt.graphemes(true).collect();
+        for (i, &gr) in txt.iter().enumerate() {
+            if space_only && gr != " " {
+                if i > 0 && txt[i - 1] == " " {
+                    buf.push_str("\x1b[39;49m");
+                }
+                buf.push_str(gr);
+            } else {
+                buf.push_str(&colors[i].to_ansi_string(color_mode, foreground_background));
+                buf.push_str(gr);
+            }
+        }
+
+        buf.push_str("\x1b[39;49m");
+        Ok(buf)
+    }
+
     /// Creates a new color profile, with the colors lightened by a multiplier.
     pub fn lighten(&self, multiplier: f32) -> Self {
         let mut rgb_f32_colors: Vec<LinSrgb> =