derived traits for loglevel and added features for usinh with serde a…

…nd clap

Cargo.toml

@@ -10,6 +10,12 @@ description = "A simple file logger for Rust"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[features]
+serde = ["dep:serde"]
+clap = ["dep:clap"]
+
 [dependencies]
 dirs = "5.0.1"
 flexi_logger = "0.28.0"
+serde = { optional = true, version = "1.0.201", features = ["derive"]}
+clap = { optional = true, version = "4.5.4", features = ["derive"]}

README.md

@@ -36,3 +36,8 @@ The log file is located:
 |Windows| %FOLDERID_LocalAppData%\program_name\log\program_nametime_stamp.log | C:\Users\username\AppData\Local\program_name\log\program_name_2020-05-01T12-34-56.log|
 |Linux| $XDG_DATA_HOME/program_name/log/program_name_time_stamp.log |/home/username/.local/share/program_name/log/program_name_2020-05-01T12-34-56.log|
 |macOS| $HOME/Library/Application Support/program_name/log/program_nametime_stamp.log |Users/username/Library/Application Support/program_name/log/program_name_2020-05-01T12-34-56.log|
+
+## Optional features
+
+- clap: enable clap parsing for LogLevel
+- serde: enable serde serialization and deserialization on LogLevel

src/lib.rs

@@ -1,4 +1,9 @@
+#![doc = include_str!("../README.md")]
 use flexi_logger::{FlexiLoggerError, Logger};
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+#[cfg(feature = "clap")]
+use clap::Subcommand;
 extern crate dirs;
 
 use std::{fmt, path::PathBuf};
@@ -97,10 +102,15 @@ macro_rules! init_logger {
     };
 }
 
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "clap", derive(Subcommand))]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Default)]
 /// Used to set the minimum log level displayed in the log file.
 pub enum LogLevel {
     Trace,
     Debug,
+    #[default]
+    /// Default log level
     Info,
     Warn,
     Error,