1441 lines
47 KiB
Rust
1441 lines
47 KiB
Rust
//! This module handles parsing a `git-config` file. Generally speaking, you
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//! want to use a higher abstraction such as [`GitConfig`] unless you have some
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//! explicit reason to work with events instead.
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//!
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//! The general workflow for interacting with this is to use one of the
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//! `parse_from_*` function variants. These will return a [`Parser`] on success,
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//! which can be converted into an [`Event`] iterator. The [`Parser`] also has
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//! additional methods for accessing leading comments or events by section.
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//!
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//! [`GitConfig`]: crate::config::GitConfig
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use bstr::{BStr, ByteSlice};
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use nom::branch::alt;
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use nom::bytes::complete::{escaped, tag, take_till, take_while};
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use nom::character::complete::{char, none_of, one_of};
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use nom::character::{is_newline, is_space};
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use nom::combinator::{map, opt};
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use nom::error::{Error as NomError, ErrorKind};
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use nom::multi::{many0, many1};
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use nom::sequence::delimited;
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use nom::IResult;
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use std::fmt::Display;
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use std::iter::FusedIterator;
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use std::{borrow::Cow, error::Error};
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/// Syntactic events that occurs in the config. Despite all these variants
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/// holding a [`Cow`] instead over a simple reference, the parser will only emit
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/// borrowed `Cow` variants.
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///
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/// The `Cow` smart pointer is used here for ease of inserting events in a
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/// middle of an Event iterator. This is used, for example, in the [`GitConfig`]
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/// struct when adding values.
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///
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/// [`Cow`]: std::borrow::Cow
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/// [`GitConfig`]: crate::config::GitConfig
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#[derive(Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug)]
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pub enum Event<'a> {
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/// A comment with a comment tag and the comment itself. Note that the
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/// comment itself may contain additional whitespace and comment markers
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/// at the beginning.
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Comment(ParsedComment<'a>),
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/// A section header containing the section name and a subsection, if it
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/// exists.
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SectionHeader(ParsedSectionHeader<'a>),
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/// A name to a value in a section.
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Key(Cow<'a, BStr>),
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/// A completed value. This may be any string, including the empty string,
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/// if an implicit boolean value is used. Note that these values may contain
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/// spaces and any special character. This value is also unprocessed, so it
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/// it may contain double quotes that should be replaced.
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Value(Cow<'a, BStr>),
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/// Represents any token used to signify a new line character. On Unix
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/// platforms, this is typically just `\n`, but can be any valid newline
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/// sequence. Multiple newlines (such as `\n\n`) will be merged as a single
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/// newline event.
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Newline(Cow<'a, BStr>),
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/// Any value that isn't completed. This occurs when the value is continued
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/// onto the next line. A Newline event is guaranteed after, followed by
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/// either a ValueDone, a Whitespace, or another ValueNotDone.
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ValueNotDone(Cow<'a, BStr>),
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/// The last line of a value which was continued onto another line.
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ValueDone(Cow<'a, BStr>),
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/// A continuous section of insignificant whitespace. Values with internal
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/// spaces will not be separated by this event.
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Whitespace(Cow<'a, BStr>),
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/// This event is emitted when the parser counters a valid `=` character
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/// separating the key and value. This event is necessary as it eliminates
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/// the ambiguity for whitespace events between a key and value event.
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KeyValueSeparator,
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}
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impl Display for Event<'_> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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Self::Comment(e) => e.fmt(f),
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Self::SectionHeader(e) => e.fmt(f),
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Self::Key(e) => e.fmt(f),
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Self::Value(e) => e.fmt(f),
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Self::Newline(e) => e.fmt(f),
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Self::ValueNotDone(e) => e.fmt(f),
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Self::ValueDone(e) => e.fmt(f),
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Self::Whitespace(e) => e.fmt(f),
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Self::KeyValueSeparator => write!(f, "="),
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}
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}
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}
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/// A parsed section containing the header and the section events.
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#[derive(Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default)]
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pub struct ParsedSection<'a> {
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/// The section name and subsection name, if any.
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pub section_header: ParsedSectionHeader<'a>,
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/// The syntactic events found in this section.
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pub events: Vec<Event<'a>>,
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}
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impl Display for ParsedSection<'_> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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write!(f, "{}", self.section_header)?;
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for event in &self.events {
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event.fmt(f)?;
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}
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Ok(())
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}
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}
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impl<'a> Into<Event<'a>> for ParsedSectionHeader<'a> {
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fn into(self) -> Event<'a> {
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Event::SectionHeader(self)
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}
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}
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/// A parsed section header, containing a name and optionally a subsection name.
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#[derive(Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default)]
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pub struct ParsedSectionHeader<'a> {
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/// The name of the header.
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pub name: Cow<'a, BStr>,
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/// The separator used to determine if the section contains a subsection.
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/// This is either a period `.` or a string of whitespace. Note that
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/// reconstruction of subsection format is dependent on this value. If this
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/// is all whitespace, then the subsection name needs to be surrounded by
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/// quotes to have perfect reconstruction.
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pub separator: Option<Cow<'a, BStr>>,
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/// The subsection name without quotes if any exist.
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pub subsection_name: Option<Cow<'a, BStr>>,
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}
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impl Display for ParsedSectionHeader<'_> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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write!(f, "[{}", self.name)?;
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if let Some(v) = &self.separator {
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v.fmt(f)?;
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let subsection_name = self.subsection_name.as_ref().unwrap();
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if *v == b".".as_bstr() {
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subsection_name.fmt(f)?;
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} else {
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write!(f, "\"{}\"", subsection_name)?;
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}
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}
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write!(f, "]")
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}
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}
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/// A parsed comment event containing the comment marker and comment.
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#[derive(Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default)]
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pub struct ParsedComment<'a> {
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/// The comment marker used. This is either a semicolon or octothorpe.
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pub comment_tag: char,
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/// The parsed comment.
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pub comment: Cow<'a, BStr>,
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}
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impl Display for ParsedComment<'_> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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self.comment_tag.fmt(f)?;
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self.comment.fmt(f)
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}
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}
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/// A parser error reports the one-indexed line number where the parsing error
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/// occurred, as well as the last parser node and the remaining data to be
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/// parsed.
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#[derive(PartialEq, Debug)]
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pub struct ParserError<'a> {
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line_number: usize,
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last_attempted_parser: ParserNode,
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parsed_until: &'a [u8],
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}
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impl ParserError<'_> {
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/// The one-indexed line number where the error occurred. This is determined
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/// by the number of newlines that were successfully parsed.
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pub fn line_number(&self) -> usize {
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self.line_number + 1
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}
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/// The remaining data that was left unparsed.
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pub fn remaining_data(&self) -> &[u8] {
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self.parsed_until
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}
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}
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impl Display for ParserError<'_> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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let data_size = self.parsed_until.len();
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let data = std::str::from_utf8(self.parsed_until);
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write!(
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f,
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"Got an unexpected token on line {} while trying to parse a {}: ",
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self.line_number + 1,
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self.last_attempted_parser,
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)?;
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match (data, data_size) {
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(Ok(data), _) if data_size > 10 => write!(
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f,
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"'{}' ... ({} characters omitted)",
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&data[..10],
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data_size - 10
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),
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(Ok(data), _) => write!(f, "'{}'", data),
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(Err(_), _) if data_size > 10 => write!(
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f,
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"'{:02x?}' ... ({} characters omitted)",
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&self.parsed_until[..10],
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data_size - 10
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),
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(Err(_), _) => write!(f, "'{:02x?}'", self.parsed_until),
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}
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}
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}
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impl Error for ParserError<'_> {}
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/// A list of parsers that parsing can fail on. This is used for pretty-printing
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/// errors
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#[derive(PartialEq, Debug, Clone, Copy)]
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enum ParserNode {
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SectionHeader,
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ConfigName,
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}
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impl Display for ParserNode {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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Self::SectionHeader => write!(f, "section header"),
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Self::ConfigName => write!(f, "config name"),
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}
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}
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}
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/// A zero-copy `git-config` file parser.
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///
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/// This is parser exposes low-level syntactic events from a `git-config` file.
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/// Generally speaking, you'll want to use [`GitConfig`] as it wraps
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/// around the parser to provide a higher-level abstraction to a `git-config`
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/// file, including querying, modifying, and updating values.
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///
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/// This parser guarantees that the events emitted are sufficient to
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/// reconstruct a `git-config` file identical to the source `git-config`.
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///
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/// # Differences between a `.ini` parser
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///
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/// While the `git-config` format closely resembles the [`.ini` file format],
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/// there are subtle differences that make them incompatible. For one, the file
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/// format is not well defined, and there exists no formal specification to
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/// adhere to. Thus, attempting to use an `.ini` parser on a `git-config` file
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/// may successfully parse invalid configuration files.
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///
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/// For concrete examples, some notable differences are:
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/// - `git-config` sections permit subsections via either a quoted string
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/// (`[some-section "subsection"]`) or via the deprecated dot notation
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/// (`[some-section.subsection]`). Successful parsing these section names is not
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/// well defined in typical `.ini` parsers. This parser will handle these cases
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/// perfectly.
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/// - Comment markers are not strictly defined either. This parser will always
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/// and only handle a semicolon or octothorpe (also known as a hash or number
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/// sign).
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/// - Global properties may be allowed in `.ini` parsers, but is strictly
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/// disallowed by this parser.
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/// - Only `\t`, `\n`, `\b` `\\` are valid escape characters.
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/// - Quoted and semi-quoted values will be parsed (but quotes will be included
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/// in event outputs). An example of a semi-quoted value is `5"hello world"`,
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/// which should be interpreted as `5hello world`.
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/// - Line continuations via a `\` character is supported.
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/// - Whitespace handling similarly follows the `git-config` specification as
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/// closely as possible, where excess whitespace after a non-quoted value are
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/// trimmed, and line continuations onto a new line with excess spaces are kept.
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/// - Only equal signs (optionally padded by spaces) are valid name/value
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/// delimiters.
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///
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/// Note that that things such as case-sensitivity or duplicate sections are
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/// _not_ handled. This parser is a low level _syntactic_ interpreter (as a
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/// parser should be), and higher level wrappers around this parser (which may
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/// or may not be zero-copy) should handle _semantic_ values. This also means
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/// that string-like values are not interpreted. For example, `hello"world"`
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/// would be read at a high level as `helloworld` but this parser will return
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/// the former instead, with the extra quotes. This is because it is not the
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/// responsibility of the parser to interpret these values, and doing so would
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/// necessarily require a copy, which this parser avoids.
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///
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/// # Trait Implementations
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///
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/// - This struct does _not_ implement [`FromStr`] due to lifetime
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/// constraints implied on the required `from_str` method. Instead, it provides
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/// [`Parser::from_str`].
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///
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/// # Idioms
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///
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/// If you do want to use this parser, there are some idioms that may help you
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/// with interpreting sequences of events.
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///
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/// ## `Value` events do not immediately follow `Key` events
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///
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/// Consider the following `git-config` example:
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///
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/// ```text
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/// [core]
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/// autocrlf = input
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/// ```
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///
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/// Because this parser guarantees perfect reconstruction, there are many
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/// non-significant events that occur in addition to the ones you may expect:
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///
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/// ```
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/// # use git_config::parser::{Event, ParsedSectionHeader, parse_from_str};
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/// # use std::borrow::Cow;
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/// # let section_header = ParsedSectionHeader {
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/// # name: Cow::Borrowed("core".into()),
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/// # separator: None,
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/// # subsection_name: None,
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/// # };
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/// # let section_data = "[core]\n autocrlf = input";
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/// # assert_eq!(parse_from_str(section_data).unwrap().into_vec(), vec![
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/// Event::SectionHeader(section_header),
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/// Event::Newline(Cow::Borrowed("\n".into())),
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/// Event::Whitespace(Cow::Borrowed(" ".into())),
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/// Event::Key(Cow::Borrowed("autocrlf".into())),
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/// Event::Whitespace(Cow::Borrowed(" ".into())),
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/// Event::KeyValueSeparator,
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/// Event::Whitespace(Cow::Borrowed(" ".into())),
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/// Event::Value(Cow::Borrowed("input".into())),
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/// # ]);
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/// ```
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///
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/// Note the two whitespace events between the key and value pair! Those two
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/// events actually refer to the whitespace between the name and value and the
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/// equal sign. So if the config instead had `autocrlf=input`, those whitespace
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/// events would no longer be present.
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///
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/// ## `KeyValueSeparator` event is not guaranteed to emit
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///
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/// Consider the following `git-config` example:
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///
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/// ```text
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/// [core]
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/// autocrlf
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/// ```
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///
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/// This is a valid config with a `autocrlf` key having an implicit `true`
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/// value. This means that there is not a `=` separating the key and value,
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/// which means that the corresponding event won't appear either:
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///
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/// ```
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/// # use git_config::parser::{Event, ParsedSectionHeader, parse_from_str};
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/// # use std::borrow::Cow;
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/// # use bstr::BStr;
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/// # let section_header = ParsedSectionHeader {
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/// # name: Cow::Borrowed("core".into()),
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/// # separator: None,
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/// # subsection_name: None,
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/// # };
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/// # let section_data = "[core]\n autocrlf";
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/// # assert_eq!(parse_from_str(section_data).unwrap().into_vec(), vec![
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/// Event::SectionHeader(section_header),
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/// Event::Newline(Cow::Borrowed("\n".into())),
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/// Event::Whitespace(Cow::Borrowed(" ".into())),
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/// Event::Key(Cow::Borrowed("autocrlf".into())),
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/// Event::Value(Cow::Borrowed("".into())),
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/// # ]);
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/// ```
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///
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/// ## Quoted values are not unquoted
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///
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/// Consider the following `git-config` example:
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///
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/// ```text
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/// [core]
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/// autocrlf=true""
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/// filemode=fa"lse"
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/// ```
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///
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/// Both these events, when fully processed, should normally be `true` and
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/// `false`. However, because this parser is zero-copy, we cannot process
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/// partially quoted values, such as the `false` example. As a result, to
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/// maintain consistency, the parser will just take all values as literals. The
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/// relevant event stream emitted is thus emitted as:
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///
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/// ```
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/// # use git_config::parser::{Event, ParsedSectionHeader, parse_from_str};
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/// # use std::borrow::Cow;
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/// # let section_header = ParsedSectionHeader {
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/// # name: Cow::Borrowed("core".into()),
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/// # separator: None,
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/// # subsection_name: None,
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/// # };
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/// # let section_data = "[core]\nautocrlf=true\"\"\nfilemode=fa\"lse\"";
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/// # assert_eq!(parse_from_str(section_data).unwrap().into_vec(), vec![
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/// Event::SectionHeader(section_header),
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/// Event::Newline(Cow::Borrowed("\n".into())),
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/// Event::Key(Cow::Borrowed("autocrlf".into())),
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/// Event::KeyValueSeparator,
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/// Event::Value(Cow::Borrowed(r#"true"""#.into())),
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/// Event::Newline(Cow::Borrowed("\n".into())),
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/// Event::Key(Cow::Borrowed("filemode".into())),
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/// Event::KeyValueSeparator,
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/// Event::Value(Cow::Borrowed(r#"fa"lse""#.into())),
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/// # ]);
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/// ```
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///
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/// ## Whitespace after line continuations are part of the value
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///
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/// Consider the following `git-config` example:
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///
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/// ```text
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/// [some-section]
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/// file=a\
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/// c
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/// ```
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///
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/// Because how `git-config` treats continuations, the whitespace preceding `c`
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/// are in fact part of the value of `file`. The fully interpreted key/value
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/// pair is actually `file=a c`. As a result, the parser will provide this
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/// split value accordingly:
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///
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/// ```
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/// # use git_config::parser::{Event, ParsedSectionHeader, parse_from_str};
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/// # use std::borrow::Cow;
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/// # let section_header = ParsedSectionHeader {
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/// # name: Cow::Borrowed("some-section".into()),
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/// # separator: None,
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/// # subsection_name: None,
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/// # };
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/// # let section_data = "[some-section]\nfile=a\\\n c";
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/// # assert_eq!(parse_from_str(section_data).unwrap().into_vec(), vec![
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/// Event::SectionHeader(section_header),
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/// Event::Newline(Cow::Borrowed("\n".into())),
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/// Event::Key(Cow::Borrowed("file".into())),
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/// Event::KeyValueSeparator,
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/// Event::ValueNotDone(Cow::Borrowed("a".into())),
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/// Event::Newline(Cow::Borrowed("\n".into())),
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/// Event::ValueDone(Cow::Borrowed(" c".into())),
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/// # ]);
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/// ```
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///
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/// [`GitConfig`]: crate::config::GitConfig
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|
/// [`.ini` file format]: https://en.wikipedia.org/wiki/INI_file
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|
/// [`git`'s documentation]: https://git-scm.com/docs/git-config#_configuration_file
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/// [`FromStr`]: std::str::FromStr
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#[derive(Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default)]
|
|
pub struct Parser<'a> {
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|
frontmatter: Vec<Event<'a>>,
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|
sections: Vec<ParsedSection<'a>>,
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|
}
|
|
|
|
impl<'a> Parser<'a> {
|
|
/// Attempt to zero-copy parse the provided `&str`. On success, returns a
|
|
/// [`Parser`] that provides methods to accessing leading comments and
|
|
/// sections of a `git-config` file and can be converted into an iterator of
|
|
/// [`Event`] for higher level processing.
|
|
///
|
|
/// This function is identical to [`parse_from_str`].
|
|
///
|
|
/// # Errors
|
|
///
|
|
/// Returns an error if the string provided is not a valid `git-config`.
|
|
/// This generally is due to either invalid names or if there's extraneous
|
|
/// data succeeding valid `git-config` data.
|
|
pub fn from_str(s: &'a str) -> Result<Self, ParserError> {
|
|
parse_from_str(s)
|
|
}
|
|
|
|
/// Attempt to zero-copy parse the provided bytes. On success, returns a
|
|
/// [`Parser`] that provides methods to accessing leading comments and
|
|
/// sections of a `git-config` file and can be converted into an iterator of
|
|
/// [`Event`] for higher level processing.
|
|
///
|
|
/// # Errors
|
|
///
|
|
/// Returns an error if the string provided is not a valid `git-config`.
|
|
/// This generally is due to either invalid names or if there's extraneous
|
|
/// data succeeding valid `git-config` data.
|
|
pub fn from_bytes(s: impl Into<&'a BStr>) -> Result<Self, ParserError<'a>> {
|
|
parse_from_bytes(s.into())
|
|
}
|
|
|
|
/// Returns the leading events (any comments, whitespace, or newlines before
|
|
/// a section) from the parser. Consider [`Parser::take_frontmatter`] if
|
|
/// you need an owned copy only once. If that function was called, then this
|
|
/// will always return an empty slice.
|
|
pub fn frontmatter(&self) -> &[Event<'a>] {
|
|
&self.frontmatter
|
|
}
|
|
|
|
/// Takes the leading events (any comments, whitespace, or newlines before
|
|
/// a section) from the parser. Subsequent calls will return an empty vec.
|
|
/// Consider [`Parser::frontmatter`] if you only need a reference to the
|
|
/// frontmatter
|
|
pub fn take_frontmatter(&mut self) -> Vec<Event<'a>> {
|
|
let mut to_return = vec![];
|
|
std::mem::swap(&mut self.frontmatter, &mut to_return);
|
|
to_return
|
|
}
|
|
|
|
/// Returns the parsed sections from the parser. Consider
|
|
/// [`Parser::take_sections`] if you need an owned copy only once. If that
|
|
/// function was called, then this will always return an empty slice.
|
|
pub fn sections(&self) -> &[ParsedSection<'a>] {
|
|
&self.sections
|
|
}
|
|
|
|
/// Takes the parsed sections from the parser. Subsequent calls will return
|
|
/// an empty vec. Consider [`Parser::sections`] if you only need a reference
|
|
/// to the comments.
|
|
pub fn take_sections(&mut self) -> Vec<ParsedSection<'a>> {
|
|
let mut to_return = vec![];
|
|
std::mem::swap(&mut self.sections, &mut to_return);
|
|
to_return
|
|
}
|
|
|
|
/// Consumes the parser to produce a Vec of Events.
|
|
pub fn into_vec(self) -> Vec<Event<'a>> {
|
|
self.into_iter().collect()
|
|
}
|
|
|
|
/// Consumes the parser to produce an iterator of Events.
|
|
pub fn into_iter(self) -> impl Iterator<Item = Event<'a>> + FusedIterator {
|
|
let section_iter = self
|
|
.sections
|
|
.into_iter()
|
|
.map(|section| {
|
|
vec![Event::SectionHeader(section.section_header)]
|
|
.into_iter()
|
|
.chain(section.events)
|
|
})
|
|
.flatten();
|
|
self.frontmatter.into_iter().chain(section_iter)
|
|
}
|
|
}
|
|
|
|
/// Attempt to zero-copy parse the provided `&str`. On success, returns a
|
|
/// [`Parser`] that provides methods to accessing leading comments and sections
|
|
/// of a `git-config` file and can be converted into an iterator of [`Event`]
|
|
/// for higher level processing.
|
|
///
|
|
/// # Errors
|
|
///
|
|
/// Returns an error if the string provided is not a valid `git-config`.
|
|
/// This generally is due to either invalid names or if there's extraneous
|
|
/// data succeeding valid `git-config` data.
|
|
pub fn parse_from_str(input: &str) -> Result<Parser<'_>, ParserError> {
|
|
parse_from_bytes(input.as_bytes())
|
|
}
|
|
|
|
/// Attempt to zero-copy parse the provided bytes. On success, returns a
|
|
/// [`Parser`] that provides methods to accessing leading comments and sections
|
|
/// of a `git-config` file and can be converted into an iterator of [`Event`]
|
|
/// for higher level processing.
|
|
///
|
|
/// # Errors
|
|
///
|
|
/// Returns an error if the string provided is not a valid `git-config`.
|
|
/// This generally is due to either invalid names or if there's extraneous
|
|
/// data succeeding valid `git-config` data.
|
|
pub fn parse_from_bytes(input: &[u8]) -> Result<Parser<'_>, ParserError> {
|
|
let mut newlines = 0;
|
|
let (i, frontmatter) = many0(alt((
|
|
map(comment, Event::Comment),
|
|
map(take_spaces, |whitespace| {
|
|
Event::Whitespace(Cow::Borrowed(whitespace.into()))
|
|
}),
|
|
map(take_newline, |(newline, counter)| {
|
|
newlines += counter;
|
|
Event::Newline(Cow::Borrowed(newline.into()))
|
|
}),
|
|
)))(input.as_bytes())
|
|
// I don't think this can panic. many0 errors if the child parser returns
|
|
// a success where the input was not consumed, but alt will only return Ok
|
|
// if one of its children succeed. However, all of it's children are
|
|
// guaranteed to consume something if they succeed, so the Ok(i) == i case
|
|
// can never occur.
|
|
.expect("many0(alt(...)) panicked. Likely a bug in one of the children parser.");
|
|
|
|
if i.is_empty() {
|
|
return Ok(Parser {
|
|
frontmatter,
|
|
sections: vec![],
|
|
});
|
|
}
|
|
|
|
let mut node = ParserNode::SectionHeader;
|
|
|
|
let maybe_sections = many1(|i| section(i, &mut node))(i);
|
|
let (i, sections) = maybe_sections.map_err(|_| ParserError {
|
|
line_number: newlines,
|
|
last_attempted_parser: node,
|
|
parsed_until: i,
|
|
})?;
|
|
|
|
let sections = sections
|
|
.into_iter()
|
|
.map(|(section, additional_newlines)| {
|
|
newlines += additional_newlines;
|
|
section
|
|
})
|
|
.collect();
|
|
|
|
// This needs to happen after we collect sections, otherwise the line number
|
|
// will be off.
|
|
if !i.is_empty() {
|
|
return Err(ParserError {
|
|
line_number: newlines,
|
|
last_attempted_parser: node,
|
|
parsed_until: i,
|
|
});
|
|
}
|
|
|
|
Ok(Parser {
|
|
frontmatter,
|
|
sections,
|
|
})
|
|
}
|
|
|
|
fn comment(i: &[u8]) -> IResult<&[u8], ParsedComment> {
|
|
let (i, comment_tag) = one_of(";#")(i)?;
|
|
let (i, comment) = take_till(|c| c == b'\n')(i)?;
|
|
Ok((
|
|
i,
|
|
ParsedComment {
|
|
comment_tag,
|
|
comment: Cow::Borrowed(comment.into()),
|
|
},
|
|
))
|
|
}
|
|
|
|
fn section<'a, 'b>(
|
|
i: &'a [u8],
|
|
node: &'b mut ParserNode,
|
|
) -> IResult<&'a [u8], (ParsedSection<'a>, usize)> {
|
|
let (mut i, section_header) = section_header(i)?;
|
|
|
|
let mut newlines = 0;
|
|
let mut items = vec![];
|
|
|
|
// This would usually be a many0(alt(...)), the manual loop allows us to
|
|
// optimize vec insertions
|
|
loop {
|
|
let old_i = i;
|
|
|
|
if let Ok((new_i, v)) = take_spaces(i) {
|
|
if old_i != new_i {
|
|
i = new_i;
|
|
items.push(Event::Whitespace(Cow::Borrowed(v.into())));
|
|
}
|
|
}
|
|
|
|
if let Ok((new_i, (v, new_newlines))) = take_newline(i) {
|
|
if old_i != new_i {
|
|
i = new_i;
|
|
newlines += new_newlines;
|
|
items.push(Event::Newline(Cow::Borrowed(v.into())));
|
|
}
|
|
}
|
|
|
|
if let Ok((new_i, _)) = section_body(i, node, &mut items) {
|
|
if old_i != new_i {
|
|
i = new_i;
|
|
}
|
|
}
|
|
|
|
if let Ok((new_i, comment)) = comment(i) {
|
|
if old_i != new_i {
|
|
i = new_i;
|
|
items.push(Event::Comment(comment));
|
|
}
|
|
}
|
|
|
|
if old_i == i {
|
|
break;
|
|
}
|
|
}
|
|
|
|
Ok((
|
|
i,
|
|
(
|
|
ParsedSection {
|
|
section_header,
|
|
events: items,
|
|
},
|
|
newlines,
|
|
),
|
|
))
|
|
}
|
|
|
|
fn section_header(i: &[u8]) -> IResult<&[u8], ParsedSectionHeader> {
|
|
let (i, _) = char('[')(i)?;
|
|
// No spaces must be between section name and section start
|
|
let (i, name) = take_while(|c: u8| c.is_ascii_alphanumeric() || c == b'-' || c == b'.')(i)?;
|
|
|
|
if let Ok((i, _)) = char::<_, NomError<&[u8]>>(']')(i) {
|
|
// Either section does not have a subsection or using deprecated
|
|
// subsection syntax at this point.
|
|
let header = match name.rfind(&[b'.']) {
|
|
Some(index) => ParsedSectionHeader {
|
|
name: Cow::Borrowed(name[..index].into()),
|
|
separator: name
|
|
.get(index..index + 1)
|
|
.map(|slice| Cow::Borrowed(slice.into())),
|
|
subsection_name: name
|
|
.get(index + 1..)
|
|
.map(|slice| Cow::Borrowed(slice.into())),
|
|
},
|
|
None => ParsedSectionHeader {
|
|
name: Cow::Borrowed(name.into()),
|
|
separator: None,
|
|
subsection_name: None,
|
|
},
|
|
};
|
|
|
|
return Ok((i, header));
|
|
}
|
|
|
|
// Section header must be using modern subsection syntax at this point.
|
|
|
|
let (i, whitespace) = take_spaces(i)?;
|
|
let (i, subsection_name) = delimited(
|
|
char('"'),
|
|
opt(escaped(none_of("\"\\\n\0"), '\\', one_of(r#""\"#))),
|
|
tag("\"]"),
|
|
)(i)?;
|
|
|
|
Ok((
|
|
i,
|
|
ParsedSectionHeader {
|
|
name: Cow::Borrowed(name.into()),
|
|
separator: Some(Cow::Borrowed(whitespace.into())),
|
|
// We know that there's some section name here, so if we get an
|
|
// empty vec here then we actually parsed an empty section name.
|
|
subsection_name: subsection_name
|
|
.or(Some(b""))
|
|
.map(|slice| Cow::Borrowed(slice.into())),
|
|
},
|
|
))
|
|
}
|
|
|
|
fn section_body<'a, 'b, 'c>(
|
|
i: &'a [u8],
|
|
node: &'b mut ParserNode,
|
|
items: &'c mut Vec<Event<'a>>,
|
|
) -> IResult<&'a [u8], ()> {
|
|
// maybe need to check for [ here
|
|
*node = ParserNode::ConfigName;
|
|
let (i, name) = config_name(i)?;
|
|
|
|
items.push(Event::Key(Cow::Borrowed(name.into())));
|
|
|
|
let (i, whitespace) = opt(take_spaces)(i)?;
|
|
|
|
if let Some(whitespace) = whitespace {
|
|
items.push(Event::Whitespace(Cow::Borrowed(whitespace.into())));
|
|
}
|
|
|
|
let (i, _) = config_value(i, items)?;
|
|
Ok((i, ()))
|
|
}
|
|
|
|
/// Parses the config name of a config pair. Assumes the input has already been
|
|
/// trimmed of any leading whitespace.
|
|
fn config_name(i: &[u8]) -> IResult<&[u8], &[u8]> {
|
|
if i.is_empty() {
|
|
return Err(nom::Err::Error(NomError {
|
|
input: i,
|
|
code: ErrorKind::NonEmpty,
|
|
}));
|
|
}
|
|
|
|
if !(i[0] as char).is_alphabetic() {
|
|
return Err(nom::Err::Error(NomError {
|
|
input: i,
|
|
code: ErrorKind::Alpha,
|
|
}));
|
|
}
|
|
take_while(|c: u8| (c as char).is_alphanumeric() || c == b'-')(i)
|
|
}
|
|
|
|
fn config_value<'a, 'b>(i: &'a [u8], events: &'b mut Vec<Event<'a>>) -> IResult<&'a [u8], ()> {
|
|
if let (i, Some(_)) = opt(char('='))(i)? {
|
|
events.push(Event::KeyValueSeparator);
|
|
let (i, whitespace) = opt(take_spaces)(i)?;
|
|
if let Some(whitespace) = whitespace {
|
|
events.push(Event::Whitespace(Cow::Borrowed(whitespace.into())));
|
|
}
|
|
let (i, _) = value_impl(i, events)?;
|
|
Ok((i, ()))
|
|
} else {
|
|
events.push(Event::Value(Cow::Borrowed("".into())));
|
|
Ok((i, ()))
|
|
}
|
|
}
|
|
|
|
fn value_impl<'a, 'b>(i: &'a [u8], events: &'b mut Vec<Event<'a>>) -> IResult<&'a [u8], ()> {
|
|
let mut parsed_index: usize = 0;
|
|
let mut offset: usize = 0;
|
|
|
|
let mut was_prev_char_escape_char = false;
|
|
// This is required to ignore comment markers if they're in a quote.
|
|
let mut is_in_quotes = false;
|
|
// Used to determine if we return a Value or Value{Not,}Done
|
|
let mut partial_value_found = false;
|
|
|
|
for (index, c) in i.iter().enumerate() {
|
|
if was_prev_char_escape_char {
|
|
was_prev_char_escape_char = false;
|
|
match c {
|
|
// We're escaping a newline, which means we've found a
|
|
// continuation.
|
|
b'\n' => {
|
|
partial_value_found = true;
|
|
events.push(Event::ValueNotDone(Cow::Borrowed(
|
|
i[offset..index - 1].into(),
|
|
)));
|
|
events.push(Event::Newline(Cow::Borrowed(i[index..index + 1].into())));
|
|
offset = index + 1;
|
|
parsed_index = 0;
|
|
}
|
|
b't' | b'\\' | b'n' | b'"' => (),
|
|
_ => {
|
|
return Err(nom::Err::Error(NomError {
|
|
input: i,
|
|
code: ErrorKind::Escaped,
|
|
}));
|
|
}
|
|
}
|
|
} else {
|
|
match c {
|
|
b'\n' => {
|
|
parsed_index = index;
|
|
break;
|
|
}
|
|
b';' | b'#' if !is_in_quotes => {
|
|
parsed_index = index;
|
|
break;
|
|
}
|
|
b'\\' => was_prev_char_escape_char = true,
|
|
b'"' => is_in_quotes = !is_in_quotes,
|
|
_ => {}
|
|
}
|
|
}
|
|
}
|
|
|
|
if parsed_index == 0 {
|
|
parsed_index = i.len();
|
|
}
|
|
|
|
// Handle incomplete escape
|
|
if was_prev_char_escape_char {
|
|
return Err(nom::Err::Error(NomError {
|
|
input: i,
|
|
code: ErrorKind::Escaped,
|
|
}));
|
|
}
|
|
|
|
// Handle incomplete quotes
|
|
if is_in_quotes {
|
|
return Err(nom::Err::Error(NomError {
|
|
input: i,
|
|
code: ErrorKind::Tag,
|
|
}));
|
|
}
|
|
|
|
let (i, remainder_value) = {
|
|
let mut new_index = parsed_index;
|
|
for index in (offset..parsed_index).rev() {
|
|
if !(i[index] as char).is_whitespace() {
|
|
new_index = index + 1;
|
|
break;
|
|
}
|
|
}
|
|
(&i[new_index..], &i[offset..new_index])
|
|
};
|
|
|
|
if partial_value_found {
|
|
events.push(Event::ValueDone(Cow::Borrowed(remainder_value.into())));
|
|
} else {
|
|
events.push(Event::Value(Cow::Borrowed(remainder_value.into())));
|
|
}
|
|
|
|
Ok((i, ()))
|
|
}
|
|
|
|
fn take_spaces(i: &[u8]) -> IResult<&[u8], &[u8]> {
|
|
let (i, v) = take_while(|c| (c as char).is_ascii() && is_space(c))(i)?;
|
|
if v.is_empty() {
|
|
Err(nom::Err::Error(NomError {
|
|
input: i,
|
|
code: ErrorKind::Eof,
|
|
}))
|
|
} else {
|
|
Ok((i, v))
|
|
}
|
|
}
|
|
|
|
fn take_newline(i: &[u8]) -> IResult<&[u8], (&[u8], usize)> {
|
|
let mut counter = 0;
|
|
let (i, v) = take_while(|c| (c as char).is_ascii() && is_newline(c))(i)?;
|
|
counter += v.len();
|
|
if v.is_empty() {
|
|
Err(nom::Err::Error(NomError {
|
|
input: i,
|
|
code: ErrorKind::Eof,
|
|
}))
|
|
} else {
|
|
Ok((i, (v, counter)))
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod comments {
|
|
use super::*;
|
|
use crate::test_util::{comment as parsed_comment, fully_consumed};
|
|
|
|
#[test]
|
|
fn semicolon() {
|
|
assert_eq!(
|
|
comment(b"; this is a semicolon comment").unwrap(),
|
|
fully_consumed(parsed_comment(';', " this is a semicolon comment")),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn octothorpe() {
|
|
assert_eq!(
|
|
comment(b"# this is an octothorpe comment").unwrap(),
|
|
fully_consumed(parsed_comment('#', " this is an octothorpe comment")),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn multiple_markers() {
|
|
assert_eq!(
|
|
comment(b"###### this is an octothorpe comment").unwrap(),
|
|
fully_consumed(parsed_comment('#', "##### this is an octothorpe comment")),
|
|
);
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod section_headers {
|
|
use super::*;
|
|
use crate::test_util::{fully_consumed, section_header as parsed_section_header};
|
|
|
|
#[test]
|
|
fn no_subsection() {
|
|
assert_eq!(
|
|
section_header(b"[hello]").unwrap(),
|
|
fully_consumed(parsed_section_header("hello", None)),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn modern_subsection() {
|
|
assert_eq!(
|
|
section_header(br#"[hello "world"]"#).unwrap(),
|
|
fully_consumed(parsed_section_header("hello", (" ", "world"))),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn escaped_subsection() {
|
|
assert_eq!(
|
|
section_header(br#"[hello "foo\\bar\""]"#).unwrap(),
|
|
fully_consumed(parsed_section_header("hello", (" ", r#"foo\\bar\""#))),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn deprecated_subsection() {
|
|
assert_eq!(
|
|
section_header(br#"[hello.world]"#).unwrap(),
|
|
fully_consumed(parsed_section_header("hello", (".", "world")))
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn empty_legacy_subsection_name() {
|
|
assert_eq!(
|
|
section_header(br#"[hello.]"#).unwrap(),
|
|
fully_consumed(parsed_section_header("hello", (".", "")))
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn empty_modern_subsection_name() {
|
|
assert_eq!(
|
|
section_header(br#"[hello ""]"#).unwrap(),
|
|
fully_consumed(parsed_section_header("hello", (" ", "")))
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn newline_in_header() {
|
|
assert!(section_header(b"[hello\n]").is_err())
|
|
}
|
|
|
|
#[test]
|
|
fn null_byte_in_header() {
|
|
assert!(section_header(b"[hello\0]").is_err())
|
|
}
|
|
|
|
#[test]
|
|
fn right_brace_in_subsection_name() {
|
|
assert_eq!(
|
|
section_header(br#"[hello "]"]"#).unwrap(),
|
|
fully_consumed(parsed_section_header("hello", (" ", "]")))
|
|
);
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod config_name {
|
|
use super::*;
|
|
use crate::test_util::fully_consumed;
|
|
|
|
#[test]
|
|
fn just_name() {
|
|
assert_eq!(
|
|
config_name(b"name").unwrap(),
|
|
fully_consumed("name".as_bytes())
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn must_start_with_alphabetic() {
|
|
assert!(config_name(b"4aaa").is_err());
|
|
assert!(config_name(b"-aaa").is_err());
|
|
}
|
|
|
|
#[test]
|
|
fn cannot_be_empty() {
|
|
assert!(config_name(b"").is_err())
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod section_body {
|
|
use super::*;
|
|
use crate::test_util::{name_event, value_event, whitespace_event};
|
|
|
|
#[test]
|
|
fn whitespace_is_not_ambigious() {
|
|
let mut node = ParserNode::SectionHeader;
|
|
let mut vec = vec![];
|
|
assert!(section_body(b"a =b", &mut node, &mut vec).is_ok());
|
|
assert_eq!(
|
|
vec,
|
|
vec![
|
|
name_event("a"),
|
|
whitespace_event(" "),
|
|
Event::KeyValueSeparator,
|
|
value_event("b")
|
|
]
|
|
);
|
|
|
|
let mut vec = vec![];
|
|
assert!(section_body(b"a= b", &mut node, &mut vec).is_ok());
|
|
assert_eq!(
|
|
vec,
|
|
vec![
|
|
name_event("a"),
|
|
Event::KeyValueSeparator,
|
|
whitespace_event(" "),
|
|
value_event("b")
|
|
]
|
|
);
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod value_no_continuation {
|
|
use super::*;
|
|
use crate::test_util::value_event;
|
|
|
|
#[test]
|
|
fn no_comment() {
|
|
let mut events = vec![];
|
|
assert_eq!(value_impl(b"hello", &mut events).unwrap().0, b"");
|
|
assert_eq!(events, vec![value_event("hello")]);
|
|
}
|
|
|
|
#[test]
|
|
fn no_comment_newline() {
|
|
let mut events = vec![];
|
|
assert_eq!(value_impl(b"hello\na", &mut events).unwrap().0, b"\na");
|
|
assert_eq!(events, vec![value_event("hello")]);
|
|
}
|
|
|
|
#[test]
|
|
fn semicolon_comment_not_consumed() {
|
|
let mut events = vec![];
|
|
assert_eq!(
|
|
value_impl(b"hello;world", &mut events).unwrap().0,
|
|
b";world"
|
|
);
|
|
assert_eq!(events, vec![value_event("hello")]);
|
|
}
|
|
|
|
#[test]
|
|
fn octothorpe_comment_not_consumed() {
|
|
let mut events = vec![];
|
|
assert_eq!(
|
|
value_impl(b"hello#world", &mut events).unwrap().0,
|
|
b"#world"
|
|
);
|
|
assert_eq!(events, vec![value_event("hello")]);
|
|
}
|
|
|
|
#[test]
|
|
fn values_with_extraneous_whitespace_without_comment() {
|
|
let mut events = vec![];
|
|
assert_eq!(
|
|
value_impl(b"hello ", &mut events).unwrap().0,
|
|
b" "
|
|
);
|
|
assert_eq!(events, vec![value_event("hello")]);
|
|
}
|
|
|
|
#[test]
|
|
fn values_with_extraneous_whitespace_before_comment() {
|
|
let mut events = vec![];
|
|
assert_eq!(
|
|
value_impl(b"hello #world", &mut events)
|
|
.unwrap()
|
|
.0,
|
|
b" #world"
|
|
);
|
|
assert_eq!(events, vec![value_event("hello")]);
|
|
|
|
let mut events = vec![];
|
|
assert_eq!(
|
|
value_impl(b"hello ;world", &mut events)
|
|
.unwrap()
|
|
.0,
|
|
b" ;world"
|
|
);
|
|
assert_eq!(events, vec![value_event("hello")]);
|
|
}
|
|
|
|
#[test]
|
|
fn trans_escaped_comment_marker_not_consumed() {
|
|
let mut events = vec![];
|
|
assert_eq!(
|
|
value_impl(br##"hello"#"world; a"##, &mut events).unwrap().0,
|
|
b"; a"
|
|
);
|
|
assert_eq!(events, vec![value_event(r##"hello"#"world"##)]);
|
|
}
|
|
|
|
#[test]
|
|
fn complex_test() {
|
|
let mut events = vec![];
|
|
assert_eq!(
|
|
value_impl(br#"value";";ahhhh"#, &mut events).unwrap().0,
|
|
b";ahhhh"
|
|
);
|
|
assert_eq!(events, vec![value_event(r#"value";""#)]);
|
|
}
|
|
|
|
#[test]
|
|
fn garbage_after_continution_is_err() {
|
|
assert!(value_impl(b"hello \\afwjdls", &mut vec![]).is_err());
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod value_continuation {
|
|
use super::*;
|
|
use crate::test_util::{newline_event, value_done_event, value_not_done_event};
|
|
|
|
#[test]
|
|
fn simple_continuation() {
|
|
let mut events = vec![];
|
|
assert_eq!(value_impl(b"hello\\\nworld", &mut events).unwrap().0, b"");
|
|
assert_eq!(
|
|
events,
|
|
vec![
|
|
value_not_done_event("hello"),
|
|
newline_event(),
|
|
value_done_event("world")
|
|
]
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn continuation_with_whitespace() {
|
|
let mut events = vec![];
|
|
assert_eq!(
|
|
value_impl(b"hello\\\n world", &mut events)
|
|
.unwrap()
|
|
.0,
|
|
b""
|
|
);
|
|
assert_eq!(
|
|
events,
|
|
vec![
|
|
value_not_done_event("hello"),
|
|
newline_event(),
|
|
value_done_event(" world")
|
|
]
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn complex_continuation_with_leftover_comment() {
|
|
let mut events = vec![];
|
|
assert_eq!(
|
|
value_impl(b"1 \"\\\"\\\na ; e \"\\\"\\\nd # \"b\t ; c", &mut events)
|
|
.unwrap()
|
|
.0,
|
|
b" # \"b\t ; c"
|
|
);
|
|
assert_eq!(
|
|
events,
|
|
vec![
|
|
value_not_done_event(r#"1 "\""#),
|
|
newline_event(),
|
|
value_not_done_event(r#"a ; e "\""#),
|
|
newline_event(),
|
|
value_done_event("d")
|
|
]
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn quote_split_over_two_lines_with_leftover_comment() {
|
|
let mut events = vec![];
|
|
assert_eq!(
|
|
value_impl(b"\"\\\n;\";a", &mut events).unwrap().0,
|
|
";a".as_bytes()
|
|
);
|
|
assert_eq!(
|
|
events,
|
|
vec![
|
|
value_not_done_event("\""),
|
|
newline_event(),
|
|
value_done_event(";\"")
|
|
]
|
|
);
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod section {
|
|
use super::*;
|
|
use crate::test_util::{
|
|
comment_event, fully_consumed, name_event, newline_event,
|
|
section_header as parsed_section_header, value_done_event, value_event,
|
|
value_not_done_event, whitespace_event,
|
|
};
|
|
|
|
#[test]
|
|
fn empty_section() {
|
|
let mut node = ParserNode::SectionHeader;
|
|
assert_eq!(
|
|
section(b"[test]", &mut node).unwrap(),
|
|
fully_consumed((
|
|
ParsedSection {
|
|
section_header: parsed_section_header("test", None),
|
|
events: vec![]
|
|
},
|
|
0
|
|
)),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn simple_section() {
|
|
let mut node = ParserNode::SectionHeader;
|
|
let section_data = br#"[hello]
|
|
a = b
|
|
c
|
|
d = "lol""#;
|
|
assert_eq!(
|
|
section(section_data, &mut node).unwrap(),
|
|
fully_consumed((
|
|
ParsedSection {
|
|
section_header: parsed_section_header("hello", None),
|
|
events: vec![
|
|
newline_event(),
|
|
whitespace_event(" "),
|
|
name_event("a"),
|
|
whitespace_event(" "),
|
|
Event::KeyValueSeparator,
|
|
whitespace_event(" "),
|
|
value_event("b"),
|
|
newline_event(),
|
|
whitespace_event(" "),
|
|
name_event("c"),
|
|
value_event(""),
|
|
newline_event(),
|
|
whitespace_event(" "),
|
|
name_event("d"),
|
|
whitespace_event(" "),
|
|
Event::KeyValueSeparator,
|
|
whitespace_event(" "),
|
|
value_event("\"lol\"")
|
|
]
|
|
},
|
|
3
|
|
))
|
|
)
|
|
}
|
|
|
|
#[test]
|
|
fn section_single_line() {
|
|
let mut node = ParserNode::SectionHeader;
|
|
assert_eq!(
|
|
section(b"[hello] c", &mut node).unwrap(),
|
|
fully_consumed((
|
|
ParsedSection {
|
|
section_header: parsed_section_header("hello", None),
|
|
events: vec![whitespace_event(" "), name_event("c"), value_event("")]
|
|
},
|
|
0
|
|
))
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn section_very_commented() {
|
|
let mut node = ParserNode::SectionHeader;
|
|
let section_data = br#"[hello] ; commentA
|
|
a = b # commentB
|
|
; commentC
|
|
; commentD
|
|
c = d"#;
|
|
assert_eq!(
|
|
section(section_data, &mut node).unwrap(),
|
|
fully_consumed((
|
|
ParsedSection {
|
|
section_header: parsed_section_header("hello", None),
|
|
events: vec![
|
|
whitespace_event(" "),
|
|
comment_event(';', " commentA"),
|
|
newline_event(),
|
|
whitespace_event(" "),
|
|
name_event("a"),
|
|
whitespace_event(" "),
|
|
Event::KeyValueSeparator,
|
|
whitespace_event(" "),
|
|
value_event("b"),
|
|
whitespace_event(" "),
|
|
comment_event('#', " commentB"),
|
|
newline_event(),
|
|
whitespace_event(" "),
|
|
comment_event(';', " commentC"),
|
|
newline_event(),
|
|
whitespace_event(" "),
|
|
comment_event(';', " commentD"),
|
|
newline_event(),
|
|
whitespace_event(" "),
|
|
name_event("c"),
|
|
whitespace_event(" "),
|
|
Event::KeyValueSeparator,
|
|
whitespace_event(" "),
|
|
value_event("d"),
|
|
]
|
|
},
|
|
4
|
|
))
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn complex_continuation() {
|
|
let mut node = ParserNode::SectionHeader;
|
|
// This test is absolute hell. Good luck if this fails.
|
|
assert_eq!(
|
|
section(
|
|
b"[section] a = 1 \"\\\"\\\na ; e \"\\\"\\\nd # \"b\t ; c",
|
|
&mut node
|
|
)
|
|
.unwrap(),
|
|
fully_consumed((
|
|
ParsedSection {
|
|
section_header: parsed_section_header("section", None),
|
|
events: vec![
|
|
whitespace_event(" "),
|
|
name_event("a"),
|
|
whitespace_event(" "),
|
|
Event::KeyValueSeparator,
|
|
whitespace_event(" "),
|
|
value_not_done_event(r#"1 "\""#),
|
|
newline_event(),
|
|
value_not_done_event(r#"a ; e "\""#),
|
|
newline_event(),
|
|
value_done_event("d"),
|
|
whitespace_event(" "),
|
|
comment_event('#', " \"b\t ; c"),
|
|
]
|
|
},
|
|
0
|
|
))
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn quote_split_over_two_lines() {
|
|
let mut node = ParserNode::SectionHeader;
|
|
assert_eq!(
|
|
section(b"[section \"a\"] b =\"\\\n;\";a", &mut node).unwrap(),
|
|
fully_consumed((
|
|
ParsedSection {
|
|
section_header: parsed_section_header("section", (" ", "a")),
|
|
events: vec![
|
|
whitespace_event(" "),
|
|
name_event("b"),
|
|
whitespace_event(" "),
|
|
Event::KeyValueSeparator,
|
|
value_not_done_event("\""),
|
|
newline_event(),
|
|
value_done_event(";\""),
|
|
comment_event(';', "a"),
|
|
]
|
|
},
|
|
0
|
|
))
|
|
)
|
|
}
|
|
|
|
#[test]
|
|
fn section_handles_extranous_whitespace_before_comment() {
|
|
let mut node = ParserNode::SectionHeader;
|
|
assert_eq!(
|
|
section(b"[s]hello #world", &mut node).unwrap(),
|
|
fully_consumed((
|
|
ParsedSection {
|
|
section_header: parsed_section_header("s", None),
|
|
events: vec![
|
|
name_event("hello"),
|
|
whitespace_event(" "),
|
|
value_event(""),
|
|
comment_event('#', "world"),
|
|
]
|
|
},
|
|
0
|
|
))
|
|
);
|
|
}
|
|
}
|