Rename build_env_logger module to logger and improve path handling

1 files changed, 79 insertions, 0 deletions

diff --git a/src/utils/logger.rs b/src/utils/logger.rs
new file mode 100644
index 0000000..e1b9e65
--- /dev/null
+++ b/src/utils/logger.rs
@@ -0,0 +1,79 @@
+use std::path::Path;
+
+use colored::Colorize;
+use env_logger::{Builder, Target};
+use just_enough_vcs::utils::string_proc::format_path::format_path;
+use log::{Level, LevelFilter};
+
+pub fn build_env_logger(log_path: impl AsRef<Path>) {
+    use std::io::{self, Write};
+
+    struct MultiWriter<A, B> {
+        a: A,
+        b: B,
+    }
+
+    impl<A: Write, B: Write> MultiWriter<A, B> {
+        fn new(a: A, b: B) -> Self {
+            Self { a, b }
+        }
+    }
+
+    impl<A: Write, B: Write> Write for MultiWriter<A, B> {
+        fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+            let _ = self.a.write(buf);
+            self.b.write(buf)
+        }
+
+        fn flush(&mut self) -> io::Result<()> {
+            let _ = self.a.flush();
+            self.b.flush()
+        }
+    }
+
+    let log_path = {
+        let path = log_path.as_ref();
+        let Ok(path) = format_path(path) else {
+            eprintln!(
+                "Build logger failed: {} is not a vaild path.",
+                path.display()
+            );
+            return;
+        };
+        path
+    };
+
+    let mut builder = Builder::new();
+
+    let log_format = |buf: &mut env_logger::fmt::Formatter, record: &log::Record| {
+        let now = chrono::Local::now();
+
+        let level_style = match record.level() {
+            Level::Error => record.args().to_string().red().bold(),
+            Level::Warn => record.args().to_string().yellow().bold(),
+            Level::Info => record.args().to_string().white(),
+            Level::Debug => record.args().to_string().white(),
+            Level::Trace => record.args().to_string().cyan(),
+        };
+
+        writeln!(
+            buf,
+            "{} {}",
+            now.format("%H:%M:%S")
+                .to_string()
+                .truecolor(105, 105, 105)
+                .bold(),
+            level_style
+        )
+    };
+
+    let log_file = std::fs::File::create(log_path).expect("Failed to create log file");
+    let combined_target = Target::Pipe(Box::new(MultiWriter::new(std::io::stdout(), log_file)));
+
+    builder
+        .format(log_format)
+        .filter(None, LevelFilter::Info)
+        .filter_module("just_enough_vcs", LevelFilter::Trace)
+        .target(combined_target)
+        .init();
+}