feat(package/prettify-log): colored output

package/prettify-log/Cargo.lock

@@ -62,6 +62,17 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "colored_json"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e35980a1b846f8e3e359fd18099172a0857140ba9230affc4f71348081e039b6"
+dependencies = [
+ "serde",
+ "serde_json",
+ "yansi",
+]
+
 [[package]]
 name = "difflib"
 version = "0.4.0"
@@ -191,6 +202,7 @@ name = "prettify-log"
 version = "0.1.0"
 dependencies = [
  "assert_cmd",
+ "colored_json",
  "float-cmp",
  "predicates",
  "serde",
@@ -432,3 +444,9 @@ checksum = "3268f3d866458b787f390cf61f4bbb563b922d091359f9608842999eaee3943c"
 dependencies = [
  "bitflags",
 ]
+
+[[package]]
+name = "yansi"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfe53a6657fd280eaa890a3bc59152892ffa3e30101319d168b781ed6529b049"

package/prettify-log/Cargo.toml

@@ -4,6 +4,7 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+colored_json = "5.0.0"
 serde = "1.0.217"
 serde_json = "1.0.138"
 

package/prettify-log/src/main.rs

@@ -1,7 +1,9 @@
 use std::io::{self, BufRead};
 use serde_json::Value;
+use colored_json::ToColoredJson;
 
-/// Finds the substring from the first '{' to its matching '}', handling nested braces.
+/// Finds the first '{' and tries to match nested braces until the
+/// corresponding '}'. Returns (start, end) byte offsets if found.
 fn find_json_block(line: &str) -> Option<(usize, usize)> {
     let start = line.find('{')?;
     let mut brace_count = 0;
@@ -27,7 +29,8 @@ fn main() -> io::Result<()> {
         if let Some((start, end)) = find_json_block(&line) {
             let candidate = &line[start..end];
             if let Ok(json) = serde_json::from_str::<Value>(candidate) {
-                let pretty = serde_json::to_string_pretty(&json).unwrap();
+                // Prettify and reconstruct the line
+                let pretty = serde_json::to_string_pretty(&json).unwrap().to_colored_json_auto().unwrap();
                 let prefix = &line[..start];
                 let suffix = &line[end..];
                 println!("{}{}{}", prefix, pretty, suffix);