add markdown log format for capture

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/log/capture/mod.rs

@@ -10,7 +10,7 @@ pub use data::Data;
 use guard::Guard;
 pub use layer::{Layer, Value};
 pub use state::State;
-pub use util::to_html;
+pub use util::*;
 
 pub type Filter = dyn Fn(Data<'_>) -> bool + Send + Sync + 'static;
 pub type Closure = dyn FnMut(Data<'_>) + Send + Sync + 'static;

src/core/log/capture/util.rs

@@ -1,19 +1,37 @@
 use std::sync::{Arc, Mutex};
 
-use super::{super::fmt, Closure};
+use super::{
+	super::{fmt, Level},
+	Closure, Data,
+};
+use crate::Result;
 
-pub fn to_html<S>(out: &Arc<Mutex<S>>) -> Box<Closure>
+pub fn fmt_html<S>(out: Arc<Mutex<S>>) -> Box<Closure>
 where
 	S: std::fmt::Write + Send + 'static,
 {
-	let out = out.clone();
-	Box::new(move |data| {
-		fmt::html(
-			&mut *out.lock().expect("locked"),
-			&data.level(),
-			data.span_name(),
-			data.message(),
-		)
-		.expect("log line appended");
-	})
+	fmt(fmt::html, out)
+}
+
+pub fn fmt_markdown<S>(out: Arc<Mutex<S>>) -> Box<Closure>
+where
+	S: std::fmt::Write + Send + 'static,
+{
+	fmt(fmt::markdown, out)
+}
+
+pub fn fmt<F, S>(fun: F, out: Arc<Mutex<S>>) -> Box<Closure>
+where
+	F: Fn(&mut S, &Level, &str, &str) -> Result<()> + Send + Sync + Copy + 'static,
+	S: std::fmt::Write + Send + 'static,
+{
+	Box::new(move |data| call(fun, &mut *out.lock().expect("locked"), &data))
+}
+
+fn call<F, S>(fun: F, out: &mut S, data: &Data<'_>)
+where
+	F: Fn(&mut S, &Level, &str, &str) -> Result<()>,
+	S: std::fmt::Write,
+{
+	fun(out, &data.level(), data.span_name(), data.message()).expect("log line appended");
 }

src/core/log/fmt.rs

@@ -16,3 +16,32 @@ where
 
 	Ok(())
 }
+
+pub fn markdown<S>(out: &mut S, level: &Level, span: &str, msg: &str) -> Result<()>
+where
+	S: Write,
+{
+	let level = level.as_str().to_uppercase();
+	writeln!(out, "`{level:>5}` `{span:^12}` `{msg}`")?;
+
+	Ok(())
+}
+
+pub fn markdown_table<S>(out: &mut S, level: &Level, span: &str, msg: &str) -> Result<()>
+where
+	S: Write,
+{
+	let level = level.as_str().to_uppercase();
+	writeln!(out, "| `{level:>5}` | `{span:^12}` | `{msg} |")?;
+
+	Ok(())
+}
+
+pub fn markdown_table_head<S>(out: &mut S) -> Result<()>
+where
+	S: Write,
+{
+	write!(out, "| level | span | message |\n|------:|:----:|:--------|\n")?;
+
+	Ok(())
+}