socketry-markdown 0.1.1

CommonMark compliant markdown parser in Rust with ASTs and extensions
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53

// Released under the MIT License.
// Copyright, 2024, by Bnchi.
// Copyright, 2024, by Titus Wormer.
// Copyright, 2026, by Samuel Williams.

//! JS equivalent https://github.com/syntax-tree/mdast-util-to-markdown/blob/fd6a508/lib/util/safe.js
use alloc::{format, string::String, vec::Vec};
use regex::Regex;

pub struct EscapeInfos {
    pub after: bool,
    pub before: bool,
}

pub struct SafeConfig<'a> {
    pub after: &'a str,
    pub before: &'a str,
    pub encode: Option<char>,
}

impl<'a> SafeConfig<'a> {
    pub(crate) fn new(before: &'a str, after: &'a str, encode: Option<char>) -> Self {
        SafeConfig {
            after,
            before,
            encode,
        }
    }
}

/// JS: <https://github.com/syntax-tree/mdast-util-to-markdown/blob/fd6a508/lib/util/safe.js#L148>.
pub fn escape_backslashes(value: &str, after: &str) -> String {
    let expression = Regex::new(r"\\[!-/:-@\[-`{-~]").unwrap();
    let mut results: String = String::new();
    let whole = format!("{}{}", value, after);

    let positions: Vec<usize> = expression.find_iter(&whole).map(|m| m.start()).collect();
    let mut start = 0;

    for position in &positions {
        if start != *position {
            results.push_str(&value[start..*position]);
        }

        results.push('\\');

        start = *position;
    }

    results.push_str(&value[start..]);

    results
}