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#[cfg(feature = "logging")]
pub fn init_logger(
min_level: log::LevelFilter, debug_file_name: &std::ffi::OsStr,
) -> Result<(), fern::InitError> {
fern::Dispatch::new()
.format(|out, message, record| {
// Note we aren't using local time since it only works on single-threaded processes.
// If that ever does get patched in again, enable the "local-offset" feature.
let offset = time::OffsetDateTime::now_utc();
out.finish(format_args!(
"{}[{}][{}] {}",
offset
.format(&time::macros::format_description!(
// The weird "[[[" is because we need to escape a bracket ("[[") to show one "[".
// See https://time-rs.github.io/book/api/format-description.html
"[[[year]-[month]-[day]][[[hour]:[minute]:[second][subsecond digits:9]]"
))
.unwrap(),
record.target(),
record.level(),
message
))
})
.level(min_level)
.chain(fern::log_file(debug_file_name)?)
.apply()?;
Ok(())
}
#[macro_export]
macro_rules! c_debug {
($($x:tt)*) => {
#[cfg(feature = "logging")]
{
log::debug!($($x)*)
}
};
}
#[macro_export]
macro_rules! c_error {
($($x:tt)*) => {
#[cfg(feature = "logging")]
{
log::error!($($x)*)
}
};
}
#[macro_export]
macro_rules! c_info {
($($x:tt)*) => {
#[cfg(feature = "logging")]
{
log::info!($($x)*)
}
};
}
#[macro_export]
macro_rules! c_log {
($($x:tt)*) => {
#[cfg(feature = "logging")]
{
log::log!($($x)*)
}
};
}
#[macro_export]
macro_rules! c_trace {
($($x:tt)*) => {
#[cfg(feature = "logging")]
{
log::trace!($($x)*)
}
};
}
#[macro_export]
macro_rules! c_warn {
($($x:tt)*) => {
#[cfg(feature = "logging")]
{
log::warn!($($x)*)
}
};
}
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