Add support for arbitrary ANSI color

.github/workflows/test.yml

@@ -52,6 +52,7 @@ jobs:
         run: cargo test
   check-semver:
     name: Check semver compatibility
+    if: github.base_ref == 'master'
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository

CHANGELOG.md

@@ -19,7 +19,7 @@
 - Changes to `Styles`:
   - Implemented bitwise operators `BitAnd`, `BitOr`, `BitXor`, and `Not` which all combine `Styles`\'s and output `Style`\'s. These can also take a `Style` as an operand.
 - Added additional testing for all of the above changes.
-- Added methods `with_style` and `with_color_and_style` to `Colorize`.
+- Added methods `with_style`, `with_color_and_style`, `ansi_color` and `on_ansi_color` to `Colorize`.
 - Replaced lazy_static with `std::sync::OnceLock`. Soft breaking change by removing the global `SHOULD_COLORIZE`.
 
 # 2.1.0

src/color.rs

@@ -21,6 +21,7 @@ pub enum Color {
     BrightCyan,
     BrightWhite,
     TrueColor { r: u8, g: u8, b: u8 },
+    AnsiColor(u8),
 }
 
 fn truecolor_support() -> bool {
@@ -56,6 +57,7 @@ impl Color {
                 self.closest_color_euclidean().to_fg_str()
             }
             Color::TrueColor { r, g, b } => format!("38;2;{};{};{}", r, g, b).into(),
+            Color::AnsiColor(code) => format!("38;5;{}", code).into(),
         }
     }
 
@@ -81,6 +83,7 @@ impl Color {
                 self.closest_color_euclidean().to_bg_str()
             }
             Color::TrueColor { r, g, b } => format!("48;2;{};{};{}", r, g, b).into(),
+            Color::AnsiColor(code) => format!("48;5;{}", code).into(),
         }
     }
 
@@ -195,6 +198,7 @@ impl Color {
                 b: 255,
             },
             TrueColor { r, g, b } => TrueColor { r, g, b },
+            AnsiColor(color) => AnsiColor(color),
         }
     }
 }

src/lib.rs

@@ -268,6 +268,14 @@ pub trait Colorize {
             b: color.b,
         })
     }
+
+    fn ansi_color<T>(self, color: T) -> ColoredString
+    where
+        Self: Sized,
+        T: Into<u8>,
+    {
+        self.color(Color::AnsiColor(color.into()))
+    }
     fn color<S: Into<Color>>(self, color: S) -> ColoredString;
     // Background Colors
     fn on_black(self) -> ColoredString
@@ -397,6 +405,13 @@ pub trait Colorize {
             b: color.b,
         })
     }
+    fn on_ansi_color<T>(self, color: T) -> ColoredString
+    where
+        Self: Sized,
+        T: Into<u8>,
+    {
+        self.on_color(Color::AnsiColor(color.into()))
+    }
     fn on_color<S: Into<Color>>(self, color: S) -> ColoredString;
     // Styles
     fn clear(self) -> ColoredString;