refactor: replace owo-colors with anstream/anstyle

The anstream and anstyle crates look more promising and additionally
allow to expose the on the API if needed, without restricting to a
specific terminal coloring crate.

Also, the owo-colors crate contained some unmaintained dependencies.

Cargo.toml

@@ -23,6 +23,8 @@ pedantic = "warn"
 clone_on_ref_ptr = "warn"
 
 [workspace.dependencies]
+anstream = "0.6.5"
+anstyle = "1.0.4"
 anyhow = "1.0.79"
 clap = { version = "4.4.12", features = ["derive", "wrap_help"] }
 color-eyre = { version = "0.6.2", default-features = false }
@@ -31,7 +33,6 @@ indoc = "2.0.4"
 insta = { version = "1.34.0", features = ["glob"] }
 miette = "5.10.0"
 mimalloc = "0.1.39"
-owo-colors = { version = "3.5.0", features = ["supports-colors"] }
 proc-macro2 = { version = "1.0.75", default-features = false }
 quote = { version = "1.0.35", default-features = false }
 serde = { version = "1.0.195", features = ["derive"] }

crates/mabo-compiler/Cargo.toml

@@ -10,8 +10,9 @@ repository.workspace = true
 license.workspace = true
 
 [dependencies]
+anstream.workspace = true
+anstyle.workspace = true
 miette.workspace = true
-owo-colors.workspace = true
 schemars = { version = "0.8.16", optional = true }
 serde = { workspace = true, optional = true }
 serde_json = { workspace = true, optional = true }

crates/mabo-compiler/src/highlight.rs

@@ -1,27 +1,36 @@
 use std::fmt::Display;
 
-use owo_colors::OwoColorize;
+use anstream::ColorChoice;
+use anstyle::{AnsiColor, Color, Style};
 
 pub fn sample(value: impl Display) -> String {
-    if cfg!(feature = "debug") {
-        format!("❬B❭{value}❬B❭")
-    } else {
-        value.bright_blue().to_string()
-    }
+    render(value, 'B', AnsiColor::BrightBlue)
 }
 
 pub fn value(value: impl Display) -> String {
-    if cfg!(feature = "debug") {
-        format!("❬Y❭{value}❬Y❭")
-    } else {
-        value.bright_yellow().to_string()
-    }
+    render(value, 'Y', AnsiColor::BrightYellow)
 }
 
 pub fn focus(value: impl Display) -> String {
+    render(value, 'W', AnsiColor::BrightWhite)
+}
+
+#[inline]
+fn render(value: impl Display, debug_char: char, color: AnsiColor) -> String {
     if cfg!(feature = "debug") {
-        format!("❬W❭{value}❬W❭")
+        format!("❬{debug_char}❭{value}❬{debug_char}❭")
+    } else if use_ansi() {
+        let style = Style::new().fg_color(Some(Color::Ansi(color)));
+        format!("{}{value}{}", style.render(), style.render_reset())
     } else {
-        value.bright_white().to_string()
+        value.to_string()
+    }
+}
+
+fn use_ansi() -> bool {
+    match anstream::stderr().current_choice() {
+        ColorChoice::Auto => anstream::stderr().is_terminal(),
+        ColorChoice::AlwaysAnsi | ColorChoice::Always => true,
+        ColorChoice::Never => false,
     }
 }

crates/mabo-parser/Cargo.toml

@@ -13,8 +13,9 @@ license.workspace = true
 rustc-args = ["--cfg", "docsrs"]
 
 [dependencies]
+anstream.workspace = true
+anstyle.workspace = true
 miette.workspace = true
-owo-colors.workspace = true
 mabo-derive = { path = "../mabo-derive" }
 winnow = "0.5.32"
 

crates/mabo-parser/src/highlight.rs

@@ -1,23 +1,32 @@
 use std::fmt::Display;
 
-use owo_colors::{OwoColorize, Stream};
+use anstream::ColorChoice;
+use anstyle::{AnsiColor, Color, Style};
 
 pub fn sample(value: impl Display) -> String {
-    if cfg!(feature = "debug") {
-        format!("❬B❭{value}❬B❭")
-    } else {
-        value
-            .if_supports_color(Stream::Stderr, OwoColorize::bright_blue)
-            .to_string()
-    }
+    render(value, 'B', AnsiColor::BrightBlue)
 }
 
 pub fn value(value: impl Display) -> String {
+    render(value, 'Y', AnsiColor::BrightYellow)
+}
+
+#[inline]
+fn render(value: impl Display, debug_char: char, color: AnsiColor) -> String {
     if cfg!(feature = "debug") {
-        format!("❬Y❭{value}❬Y❭")
+        format!("❬{debug_char}❭{value}❬{debug_char}❭")
+    } else if use_ansi() {
+        let style = Style::new().fg_color(Some(Color::Ansi(color)));
+        format!("{}{value}{}", style.render(), style.render_reset())
     } else {
-        value
-            .if_supports_color(Stream::Stderr, OwoColorize::bright_yellow)
-            .to_string()
+        value.to_string()
+    }
+}
+
+fn use_ansi() -> bool {
+    match anstream::stderr().current_choice() {
+        ColorChoice::Auto => anstream::stderr().is_terminal(),
+        ColorChoice::AlwaysAnsi | ColorChoice::Always => true,
+        ColorChoice::Never => false,
     }
 }

deny.toml

@@ -1,8 +1,5 @@
 all-features = true
 
-[advisories]
-ignore = ["RUSTSEC-2021-0145"]
-
 [licenses]
 allow-osi-fsf-free = "both"
 exceptions = [
@@ -13,8 +10,6 @@ exceptions = [
 [bans]
 skip = [
     { name = "bitflags", version = "1" },
-    { name = "hermit-abi", version = "0.1" },
-    { name = "supports-color", version = "1" },
     { name = "syn", version = "1" },
     { name = "terminal_size", version = "0.1" },
 ]