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use std::{borrow::Cow, convert::TryFrom, fmt::Display, str::FromStr};
use bstr::{BStr, BString, ByteVec};
use crate::{
file::Metadata,
parse,
parse::{section, Event},
value::normalize,
File,
};
impl FromStr for File<'static> {
type Err = parse::Error;
fn from_str(s: &str) -> Result<Self, Self::Err> {
parse::Events::from_bytes_owned(s.as_bytes(), None)
.map(|events| File::from_parse_events_no_includes(events, Metadata::api()))
}
}
impl<'a> TryFrom<&'a str> for File<'a> {
type Error = parse::Error;
/// Convenience constructor. Attempts to parse the provided string into a
/// [`File`]. See [`Events::from_str()`][crate::parse::Events::from_str()] for more information.
fn try_from(s: &'a str) -> Result<File<'a>, Self::Error> {
parse::Events::from_str(s).map(|events| Self::from_parse_events_no_includes(events, Metadata::api()))
}
}
impl<'a> TryFrom<&'a BStr> for File<'a> {
type Error = parse::Error;
/// Convenience constructor. Attempts to parse the provided byte string into
/// a [`File`]. See [`Events::from_bytes()`][parse::Events::from_bytes()] for more information.
fn try_from(value: &'a BStr) -> Result<File<'a>, Self::Error> {
parse::Events::from_bytes(value, None)
.map(|events| Self::from_parse_events_no_includes(events, Metadata::api()))
}
}
impl From<File<'_>> for BString {
fn from(c: File<'_>) -> Self {
c.into()
}
}
impl Display for File<'_> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
Display::fmt(&self.to_bstring(), f)
}
}
impl PartialEq for File<'_> {
fn eq(&self, other: &Self) -> bool {
fn find_key<'a>(mut it: impl Iterator<Item = &'a Event<'a>>) -> Option<&'a section::Key<'a>> {
it.find_map(|e| match e {
Event::SectionKey(k) => Some(k),
_ => None,
})
}
fn collect_value<'a>(it: impl Iterator<Item = &'a Event<'a>>) -> Cow<'a, BStr> {
let mut partial_value = BString::default();
let mut value = None;
for event in it {
match event {
Event::SectionKey(_) => break,
Event::Value(v) => {
value = v.clone().into();
break;
}
Event::ValueNotDone(v) => partial_value.push_str(v.as_ref()),
Event::ValueDone(v) => {
partial_value.push_str(v.as_ref());
value = Some(partial_value.into());
break;
}
_ => (),
}
}
value.map(normalize).unwrap_or_default()
}
if self.section_order.len() != other.section_order.len() {
return false;
}
for (lhs, rhs) in self
.section_order
.iter()
.zip(&other.section_order)
.map(|(lhs, rhs)| (&self.sections[lhs], &other.sections[rhs]))
{
if !(lhs.header.name == rhs.header.name && lhs.header.subsection_name == rhs.header.subsection_name) {
return false;
}
let (mut lhs, mut rhs) = (lhs.body.0.iter(), rhs.body.0.iter());
while let (Some(lhs_key), Some(rhs_key)) = (find_key(&mut lhs), find_key(&mut rhs)) {
if lhs_key != rhs_key {
return false;
}
if collect_value(&mut lhs) != collect_value(&mut rhs) {
return false;
}
}
}
true
}
}
|
