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MMM: XML serialization and fixed block code parsing

This commit is contained in:
Natty 2023-10-26 00:30:11 +02:00
parent 6ed6066b1f
commit 91883c6b36
Signed by: natty
GPG Key ID: BF6CB659ADEE60EC
4 changed files with 264 additions and 10 deletions
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12
Cargo.lock generated
View File

@ -1517,7 +1517,9 @@ dependencies = [
"emojis",
"nom",
"nom_locate",
"quick-xml",
"serde",
"strum",
"tracing",
"unicode-segmentation",
]
@ -2073,6 +2075,16 @@ dependencies = [
"syn 1.0.109",
]
[[package]]
name = "quick-xml"
version = "0.31.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1004a344b30a54e2ee58d66a71b32d2db2feb0a31f9a2d302bf0536f15de2a33"
dependencies = [
"memchr",
"serde",
]
[[package]]
name = "quote"
version = "1.0.32"

1
Cargo.toml
View File

@ -43,6 +43,7 @@ miette = "5.9"
nom = "7"
nom_locate = "4"
percent-encoding = "2.2"
quick-xml = "0.31"
redis = "0.23"
regex = "1.9"
reqwest = "0.11"

6
magnetar_mmm_parser/Cargo.toml
View File

@ -4,6 +4,10 @@ version.workspace = true
edition.workspace = true
license = "MIT OR Apache-2.0"
[features]
default = ["xml"]
xml = ["dep:quick-xml"]
[dependencies]
either = { workspace = true }
emojis = { workspace = true }
@ -11,5 +15,7 @@ nom = { workspace = true }
nom_locate = { workspace = true }
compact_str = { workspace = true, features = ["serde"] }
serde = { workspace = true, features = ["derive"] }
strum = { workspace = true, features = ["derive"] }
tracing = { workspace = true }
unicode-segmentation = { workspace = true }
quick-xml = { workspace = "true", optional = true, features = ["serialize"] }

255
magnetar_mmm_parser/src/lib.rs
View File

@ -8,18 +8,24 @@ use nom::character::complete::{
};
use nom::combinator::{eof, fail, map, not, opt, peek, recognize};
use nom::error::ErrorKind;
use nom::multi::{many0, many0_count, many1, many1_count, many_till, separated_list1};
use nom::multi::{many0_count, many1, many1_count, many_till, separated_list1};
use nom::sequence::tuple;
use nom::{IResult, Offset, Parser, Slice};
use nom_locate::LocatedSpan;
use quick_xml::events::{BytesText, Event};
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::convert::{identity, Infallible};
use std::io::{Cursor, Write};
use std::marker::PhantomData;
use strum::IntoStaticStr;
use tracing::trace;
use unicode_segmentation::UnicodeSegmentation;
#[derive(Copy, Clone, Debug, Eq, PartialEq, Deserialize, Serialize)]
#[derive(Copy, Clone, Debug, Eq, PartialEq, Deserialize, Serialize, IntoStaticStr)]
// The alternative would be to implement a serde serializer for this one enum, but that's disgusting
#[strum(serialize_all = "snake_case")]
#[serde(rename_all = "snake_case")]
pub enum MentionType {
Community,
User,
@ -217,6 +223,161 @@ impl Token {
other => other.clone(),
}
}
fn write<T: Write>(&self, writer: &mut quick_xml::Writer<T>) -> quick_xml::Result<()> {
match self {
Token::PlainText(plain) => {
writer.write_event(Event::Text(BytesText::new(plain.as_str())))?;
}
Token::Sequence(sequence) => {
sequence.iter().try_for_each(|item| item.write(writer))?;
}
Token::Quote(inner) => {
writer
.create_element("quote")
.write_inner_content(|w| inner.write(w))?;
}
Token::Small(inner) => {
writer
.create_element("small")
.write_inner_content(|w| inner.write(w))?;
}
Token::BoldItalic(inner) => {
writer
.create_element("b")
.write_inner_content::<_, quick_xml::Error>(|w| {
w.create_element("i")
.write_inner_content(|w| inner.write(w))?;
Ok(())
})?;
}
Token::Bold(inner) => {
writer
.create_element("b")
.write_inner_content(|w| inner.write(w))?;
}
Token::Italic(inner) => {
writer
.create_element("i")
.write_inner_content(|w| inner.write(w))?;
}
Token::Center(inner) => {
writer
.create_element("center")
.write_inner_content(|w| inner.write(w))?;
}
Token::Strikethrough(inner) => {
writer
.create_element("s")
.write_inner_content(|w| inner.write(w))?;
}
Token::PlainTag(plain) => {
writer.write_event(Event::Text(BytesText::new(plain.as_str())))?;
}
Token::InlineCode(code) => {
writer
.create_element("inline-code")
.write_text_content(BytesText::new(code))?;
}
Token::InlineMath(math) => {
writer
.create_element("inline-math")
.write_text_content(BytesText::new(math))?;
}
Token::UrlRaw(url) => {
writer
.create_element("a")
.with_attribute(("href", url.as_str()))
.write_text_content(BytesText::new(url))?;
}
Token::UrlNoEmbed(url) => {
writer
.create_element("a")
.with_attribute(("href", url.as_str()))
.with_attribute(("embed", "false"))
.write_text_content(BytesText::new(url))?;
}
Token::Link { label, href, embed } => {
writer
.create_element("a")
.with_attribute(("href", href.as_str()))
.with_attribute(("embed", if *embed { "true" } else { "false" }))
.write_inner_content(|w| label.write(w))?;
}
Token::BlockCode { inner, lang } => {
let mut ew = writer.create_element("code");
if let Some(language) = lang {
ew = ew.with_attribute(("lang", language.as_str()));
}
ew.write_text_content(BytesText::new(inner))?;
}
Token::BlockMath(math) => {
writer
.create_element("math")
.write_text_content(BytesText::new(math))?;
}
Token::Function {
inner,
name,
params,
} => {
let mut ew = writer
.create_element("fn")
.with_attribute(("name", name.as_str()));
for (k, v) in params {
ew = ew
.with_attribute((format!("arg-{k}").as_str(), v.as_deref().unwrap_or("")));
}
ew.write_inner_content(|w| inner.write(w))?;
}
Token::Mention {
name,
host,
mention_type,
} => {
let mut ew = writer
.create_element("mention")
.with_attribute(("name", name.as_str()))
.with_attribute(("type", mention_type.into()));
if let Some(host) = host {
ew = ew.with_attribute(("host", host.as_str()));
}
ew.write_empty()?;
}
Token::UnicodeEmoji(text) => {
writer
.create_element("ue")
.write_text_content(BytesText::new(text))?;
}
Token::ShortcodeEmoji(shortcode) => {
writer
.create_element("ee")
.write_text_content(BytesText::new(shortcode))?;
}
Token::Hashtag(tag) => {
writer
.create_element("hashtag")
.with_attribute(("tag", tag.as_str()));
}
}
Ok(())
}
}
pub fn to_xml_string(token: &Token) -> quick_xml::Result<String> {
let mut writer = quick_xml::Writer::new(Cursor::new(Vec::new()));
writer
.create_element("mmm")
.write_inner_content(|writer| token.write(writer))?;
Ok(String::from_utf8(writer.into_inner().into_inner())?)
}
#[derive(Debug, Default, Copy, Clone)]
@ -690,7 +851,7 @@ impl Context {
let (input, _) = delim(input)?;
let (input, lang) = opt(map(
recognize(many1(tuple((not(delim), not_line_ending)))),
recognize(many1(tuple((not(delim), not(line_ending), anychar)))),
Span::into_fragment,
))(input)?;
let (input, _) = line_ending(input)?;
@ -705,8 +866,10 @@ impl Context {
let (input, _) = line_ending(input)?;
let (input, _) = delim(input)?;
let (input, _) = many0(space)(input)?;
let (input, _) = not(not(line_ending))(input)?;
// Trailing whitespace after the triple backtick
let (input, _) = opt(space1_unicode)(input)?;
// If we got this far, the next character should be a line ending
let (input, _) = not(tuple((not(line_ending), anychar)))(input)?;
let (input, _) = opt(line_ending)(input)?;
Ok((
@ -738,8 +901,10 @@ impl Context {
let (input, _) = opt(line_ending)(input)?;
let (input, _) = end(input)?;
let (input, _) = many0(space)(input)?;
let (input, _) = not(not_line_ending)(input)?;
// Trailing whitespace after the closing delim
let (input, _) = opt(space1_unicode)(input)?;
// If we got this far, the next character should be a line ending
let (input, _) = not(tuple((not(line_ending), anychar)))(input)?;
let (input, _) = opt(line_ending)(input)?;
Ok((
@ -875,7 +1040,7 @@ impl Context {
)))(input)
};
let param_value = recognize(many1_count(alt((
let arg_value = recognize(many1_count(alt((
alphanumeric1,
tag("."),
tag("-"),
@ -884,7 +1049,7 @@ impl Context {
let (input, func_name) = map(func_ident, Span::into_fragment)(input)?;
let arg = tuple((func_ident, opt(tuple((tag("="), param_value)))));
let arg = tuple((func_ident, opt(tuple((tag("="), arg_value)))));
let (input, args) =
opt(tuple((one_char('.'), separated_list1(one_char(','), arg))))(input)?;
@ -1428,7 +1593,7 @@ impl Context {
#[cfg(test)]
mod test {
use crate::{Context, Span, SpanMeta, Token, DEFAULT_DEPTH_LIMIT};
use crate::{to_xml_string, Context, Span, SpanMeta, Token, DEFAULT_DEPTH_LIMIT};
use nom::bytes::complete::tag;
use std::collections::HashMap;
@ -1588,6 +1753,49 @@ mod test {
#[test]
fn parse_complex() {
assert_eq!(
parse_full(r"\( nya^3 \)"),
Token::InlineMath(" nya^3 ".to_string())
);
assert_eq!(
parse_full("\\( nya^3 \n \\)"),
Token::PlainText("\\( nya^3 \n \\)".into())
);
assert_eq!(
parse_full(r"`AbstractProxyFactoryBean`"),
Token::InlineCode("AbstractProxyFactoryBean".to_string())
);
assert_eq!(
parse_full("`let x = \n 5;`"),
Token::PlainText("`let x = \n 5;`".into())
);
assert_eq!(
parse_full(
r#"
```js
var x = undefined;
```"#
),
Token::BlockCode {
lang: Some("js".to_string()),
inner: "var x = undefined;".to_string(),
}
);
assert_eq!(
parse_full(
r"
\[
a^2 + b^2 = c^2
\]"
),
Token::BlockMath("a^2 + b^2 = c^2".to_string())
);
assert_eq!(
parse_full(
r#"<center>centered
@ -2005,4 +2213,31 @@ text</center>"#
])
);
}
#[test]
fn xml_serialization() {
assert_eq!(
&to_xml_string(&parse_full("***nyaaa***")).unwrap(),
r#"<mmm><b><i>nyaaa</i></b></mmm>"#
);
assert_eq!(
&to_xml_string(&parse_full(
"@natty $[spin.speed=0.5s 🥺]:cat_attack: <plain>test</plain>"
))
.unwrap(),
r#"<mmm><mention name="natty" type="user"/> <fn name="spin" arg-speed="0.5s"><ue>🥺</ue></fn><ee>cat_attack</ee> test</mmm>"#
);
assert_eq!(
&to_xml_string(&parse_full(
r#"
```js
var x = undefined;
``` "#
))
.unwrap(),
"<mmm><code lang=\"js\">var x = undefined;</code></mmm>"
);
}
}