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use crate::{file::init, parse, parse::Event, path::interpolate};
/// The error returned by [`File::from_bytes_no_includes()`][crate::File::from_bytes_no_includes()].
#[derive(Debug, thiserror::Error)]
#[allow(missing_docs)]
pub enum Error {
#[error(transparent)]
Parse(#[from] parse::Error),
#[error(transparent)]
Interpolate(#[from] interpolate::Error),
#[error(transparent)]
Includes(#[from] init::includes::Error),
}
/// Options when loading git config using [`File::from_paths_metadata()`][crate::File::from_paths_metadata()].
#[derive(Clone, Copy, Default)]
pub struct Options<'a> {
/// Configure how to follow includes while handling paths.
pub includes: init::includes::Options<'a>,
/// If true, only value-bearing parse events will be kept to reduce memory usage and increase performance.
///
/// Note that doing so will degenerate [`write_to()`][crate::File::write_to()] and strip it off its comments
/// and additional whitespace entirely, but will otherwise be a valid configuration file.
pub lossy: bool,
}
impl Options<'_> {
pub(crate) fn to_event_filter(self) -> Option<fn(&Event<'_>) -> bool> {
if self.lossy {
Some(discard_nonessential_events)
} else {
None
}
}
}
fn discard_nonessential_events(e: &Event<'_>) -> bool {
match e {
Event::Whitespace(_) | Event::Comment(_) | Event::Newline(_) => false,
Event::SectionHeader(_)
| Event::SectionKey(_)
| Event::KeyValueSeparator
| Event::Value(_)
| Event::ValueNotDone(_)
| Event::ValueDone(_) => true,
}
}
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