Log feature

Cargo.toml

@@ -1,5 +1,4 @@
 [package]
-
 name = "syslog"
 version = "7.0.0"
 authors = [ "contact@geoffroycouprie.com" ]
@@ -8,9 +7,14 @@ license = "MIT"
 repository = "https://github.com/Geal/rust-syslog"
 documentation = "https://docs.rs/syslog"
 keywords = ["syslog", "logs", "logging"]
+edition = "2024"
 
 [dependencies]
 hostname    = "0.4"
 time        = { version = "0.3.5", features = ["local-offset", "formatting"] }
-log         = { version = "0.4.8", features = [ "std" ] }
+log         = { version = "0.4.8", features = [ "std" ], optional = true }
 libc = "0.2.112"
+
+[features]
+default = [ "log" ]
+log = [ "dep:log" ]

src/errors.rs

@@ -20,9 +20,9 @@ impl std::error::Error for Error {
 impl std::fmt::Display for Error {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         match *self {
-            Error::Initialization(ref err) => write!(f, "Initialization error: {}", err),
-            Error::Write(ref err) => write!(f, "Write error: {}", err),
-            Error::Io(ref err) => write!(f, "Io error: {}", err),
+            Error::Initialization(ref err) => write!(f, "Initialization error: {err}"),
+            Error::Write(ref err) => write!(f, "Write error: {err}"),
+            Error::Io(ref err) => write!(f, "Io error: {err}"),
         }
     }
 }

src/format.rs

@@ -1,13 +1,9 @@
 use std::collections::BTreeMap;
 use std::fmt::Display;
 use std::io::Write;
-use time;
 
-use errors::*;
-use facility::Facility;
-use get_hostname;
-use get_process_info;
-use Priority;
+use crate::errors::*;
+use crate::{Facility, Priority, get_hostname, get_process_info};
 
 #[allow(non_camel_case_types)]
 #[derive(Copy, Clone)]

src/lib.rs

@@ -51,9 +51,6 @@
 //!
 //! info!("hello world");
 //! ```
-extern crate log;
-extern crate time;
-
 use std::env;
 use std::fmt::{self, Arguments};
 use std::io::{self, BufWriter, Write};
@@ -64,6 +61,7 @@ use std::path::Path;
 use std::process;
 use std::sync::{Arc, Mutex};
 
+#[cfg(feature = "log")]
 use log::{Level, Log, Metadata, Record};
 
 mod errors;
@@ -340,6 +338,7 @@ impl BasicLogger {
     }
 }
 
+#[cfg(feature = "log")]
 #[allow(unused_variables, unused_must_use)]
 impl Log for BasicLogger {
     fn enabled(&self, metadata: &Metadata) -> bool {
@@ -367,6 +366,7 @@ impl Log for BasicLogger {
 }
 
 /// Unix socket Logger init function compatible with log crate
+#[cfg(feature = "log")]
 #[cfg(unix)]
 pub fn init_unix(facility: Facility, log_level: log::LevelFilter) -> Result<()> {
     let (process, pid) = get_process_info()?;
@@ -391,6 +391,7 @@ pub fn init_unix(_facility: Facility, _log_level: log::LevelFilter) -> Result<()
 }
 
 /// Unix socket Logger init function compatible with log crate and user provided socket path
+#[cfg(feature = "log")]
 #[cfg(unix)]
 pub fn init_unix_custom<P: AsRef<Path>>(
     facility: Facility,
@@ -423,6 +424,7 @@ pub fn init_unix_custom<P: AsRef<Path>>(
 }
 
 /// UDP Logger init function compatible with log crate
+#[cfg(feature = "log")]
 pub fn init_udp<T: ToSocketAddrs>(
     local: T,
     server: T,
@@ -447,6 +449,7 @@ pub fn init_udp<T: ToSocketAddrs>(
 }
 
 /// TCP Logger init function compatible with log crate
+#[cfg(feature = "log")]
 pub fn init_tcp<T: ToSocketAddrs>(
     server: T,
     hostname: String,
@@ -482,6 +485,7 @@ pub fn init_tcp<T: ToSocketAddrs>(
 /// this method doesn't return error even if there is no syslog.
 ///
 /// If `application_name` is `None` name is derived from executable name
+#[cfg(feature = "log")]
 pub fn init(
     facility: Facility,
     log_level: log::LevelFilter,