Support named colors (#786)

https://docs.rs/palette/0.6.0/palette/named/index.html

3 files changed, 18 insertions, 4 deletions

diff --git a/src/cli.rs b/src/cli.rs
index 5b0fd6a6..558d2141 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -114,15 +114,19 @@ A complete description of the style string syntax follows:
 COLORS
 ------
 
-There are three ways to specify a color (this section applies to foreground and background colors
+There are four ways to specify a color (this section applies to foreground and background colors
 within a style string):
 
-1. RGB hex code
+1. CSS color name
+
+   Any of the 140 color names used in CSS: https://www.w3schools.com/colors/colors_groups.asp
+
+2. RGB hex code
 
    An example of using an RGB hex code is:
    --file-style=\"#0e7c0e\"
 
-2. ANSI color name
+3. ANSI color name
 
    There are 8 ANSI color names:
    black, red, green, yellow, blue, magenta, cyan, white.
@@ -141,7 +145,7 @@ within a style string):
 
    \"purple\" is accepted as a synonym for \"magenta\". Color names and codes are case-insensitive.
 
-3. ANSI color number
+4. ANSI color number
 
    An example of using an ANSI color number is:
    --file-style=28
diff --git a/src/color.rs b/src/color.rs
index c816e158..6f617baf 100644
--- a/src/color.rs
+++ b/src/color.rs
@@ -22,6 +22,7 @@ pub fn parse_color(s: &str, true_color: bool) -> Option<Color> {
             .ok()
             .and_then(utils::syntect::syntect_color_from_ansi_number)
             .or_else(|| utils::syntect::syntect_color_from_ansi_name(s))
+            .or_else(|| utils::syntect::syntect_color_from_name(s))
             .unwrap_or_else(die)
     };
     utils::bat::terminal::to_ansi_color(syntect_color, true_color)
diff --git a/src/utils/syntect.rs b/src/utils/syntect.rs
index 6f7e4af5..99b358da 100644
--- a/src/utils/syntect.rs
+++ b/src/utils/syntect.rs
@@ -9,6 +9,15 @@ pub fn syntect_color_from_ansi_name(name: &str) -> Option<Color> {
     color::ansi_16_color_name_to_number(name).and_then(syntect_color_from_ansi_number)
 }
 
+pub fn syntect_color_from_name(name: &str) -> Option<Color> {
+    palette::named::from_str(name).map(|color| Color {
+        r: color.red,
+        g: color.green,
+        b: color.blue,
+        a: 0xFF,
+    })
+}
+
 /// Convert 8-bit ANSI code to #RGBA string with ANSI code in red channel and 0 in alpha channel.
 // See https://github.com/sharkdp/bat/pull/543
 pub fn syntect_color_from_ansi_number(n: u8) -> Option<Color> {