From ea98ddced71df70915df9a5ca50a8e67feedb0d3 Mon Sep 17 00:00:00 2001
From: cel 🌸 <cel@blos.sm>
Date: Fri, 14 Jun 2024 16:53:47 +0100
Subject: FML

---
 src/parser.rs | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 84 insertions(+), 8 deletions(-)

(limited to 'src/parser.rs')

diff --git a/src/parser.rs b/src/parser.rs
index 07d48c6..2382f68 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -1,15 +1,15 @@
 use std::char;
 
 use nom::{
-    branch::alt,
-    bytes::streaming::{is_a, tag, take, take_till, take_until},
+    branch::{alt, permutation},
+    bytes::streaming::{is_a, is_not, tag, take, take_till, take_until},
     character::{
         complete::one_of,
-        streaming::{char, digit1, none_of, satisfy},
+        streaming::{alpha1, char, digit1, none_of, satisfy},
     },
-    combinator::{cond, map, map_parser, map_res, not, opt, recognize, value, verify},
-    error::ErrorKind,
-    multi::{many0, many1},
+    combinator::{cond, map, map_parser, map_res, not, opt, peek, recognize, value, verify},
+    error::{Error, ErrorKind},
+    multi::{many0, many1, many_till},
     sequence::{delimited, pair, preceded, tuple},
     Err, IResult, Parser,
 };
@@ -197,10 +197,77 @@ pub fn pubid_char(input: &str) -> IResult<&str, PubidChar> {
     )
 }
 
+// TODO: wtf why doesn't this work how do i do thisjj
 type CharData<'s> = &'s str;
 /// [14]   	CharData	   ::=   	[^<&]* - ([^<&]* ']]>' [^<&]*)
 pub fn char_data(input: &str) -> IResult<&str, CharData> {
-    recognize(take_until("]]>").and_then(take_till(|c| c == '<' || c == '&')))(input)
+    // tag(map(
+    //     peek(alt((
+    //         map_parser(
+    //             peek(take_until("]]>")),
+    //             nom::bytes::complete::take_till(|c| c == '<' || c == '&'),
+    //         ),
+    //         map_parser(
+    //             peek(take_till(|c| c == '<' || c == '&')),
+    //             nom::bytes::complete::take_until("]]>"),
+    //         ),
+    //     ))),
+    //     |(first, _)| first,
+    // ))(input)
+
+    // map(
+    //     tuple((is_not("<&]"), peek(alt((tag("<"), tag("&"), tag("]]>")))))),
+    //     |(first, _)| first,
+    // )(input)
+    // map(
+    //     tuple((recognize(many0(none_of("<&"))), opt(peek(tag("]]>"))))),
+    //     |(first, _)| first,
+    // )(input)
+    // alt((recognize(many0(none_of("<&"))), take_until("]]>")))(input)
+    let tagg: &str;
+    if let Ok((_, tagg1)) = peek(take_until::<&str, &str, Error<&str>>("]]>"))(input) {
+        if let Ok((_, tagg2)) =
+            peek::<&str, &str, Error<&str>, _>(take_till(|c: char| c == '<' || c == '&'))(input)
+        {
+            if tagg1.len() < tagg2.len() {
+                tagg = tagg1
+            } else {
+                tagg = tagg2
+            }
+        } else {
+            tagg = tagg1;
+        }
+    } else {
+        (_, tagg) = peek(take_till(|c| c == '<' || c == '&'))(input)?
+    }
+    tag(tagg)(input)
+    // let mut len = 0;
+    // let ch  = input.chars().collect::<Vec<_>>();
+    // for (idx, char) in ch.as_ref().into_iter().enumerate() {
+    //     match char {
+    //         '<' | '&' =>                 break,
+    //         ']' => {
+    //             if idx <= ch.len() - 3 {}
+    //         },
+    //         _ => todo!(),
+    //     }
+    // }
+    // while let Some(char) = chars.next() {
+    //     if char == '<' || char == '&' {
+    //         break;
+    //     } else if char == ']' {
+    //         if let Some(next) = chars.peek() {
+    //             if next == ']' {
+    //                 if let Some(next) = chars.next_if_eq() {}
+    //             }
+    //         }
+    //     }
+    //     len += 1;
+    // }
+    // todo!()
+    // recognize(many0(permutation((none_of("<&"), not(tag("]]>"))))))(input)
+    // recognize(many0(not(alt((tag("<"), tag("&"), tag("]]>"))))))(input)
+    // take_till(|c| c == '<' || c == '&').and_then(take_until("]]>"))(input)
 }
 
 type Prolog<'s> = (
@@ -283,6 +350,8 @@ pub fn pe_reference(input: &str) -> IResult<&str, char> {
 
 #[cfg(test)]
 mod tests {
+    use std::num::NonZero;
+
     use super::*;
 
     #[test]
@@ -290,6 +359,13 @@ mod tests {
         assert_eq!(Ok(("&def]]>ghi", "abc")), char_data("abc&def]]>ghi"));
         assert_eq!(Ok(("]]>ghi", "abcdef")), char_data("abcdef]]>ghi"));
         assert_eq!(Ok(("&defghi", "abc")), char_data("abc&defghi"));
-        assert_eq!(Ok(("", "abcdefghi")), char_data("abcdefghi"));
+        assert_eq!(Ok(("]]>def&ghi", "abc")), char_data("abc]]>def&ghi"));
+        assert_eq!(Ok(("&ghi", "abc]>def")), char_data("abc]>def&ghi"));
+        assert_eq!(
+            Err(Err::Incomplete(nom::Needed::Size(
+                NonZero::new(1usize).unwrap()
+            ))),
+            char_data("abcdefghi")
+        );
     }
 }
-- 
cgit