r3bl_tui 0.7.0

TUI library to build modern apps inspired by React, Elm, with Flexbox, CSS, editor component, emoji support, and more
Documentation 
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/*
 *   Copyright (c) 2024-2025 R3BL LLC
 *   All rights reserved.
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */

use nom::{bytes::complete::{tag, take_until},
          combinator::map,
          error::ErrorKind,
          IResult,
          Parser};

use crate::{fg_green, fg_red, md_parser::constants::NEW_LINE, DEBUG_MD_PARSER_STDOUT};

/// Takes the text between the start and end delimiters. Will error out if this text
/// contains a new line.
pub fn take_text_between_delims_err_on_new_line<'input>(
    input: &'input str,
    start_delim: &'input str,
    end_delim: &'input str,
) -> IResult<&'input str, &'input str> {
    DEBUG_MD_PARSER_STDOUT.then(|| {
        println!(
            "\n{} specialized parser take text between delims err on new line: \ninput: {:?}, start_delim: {:?}, end_delim: {:?}",
            fg_green("■■"),
            input,
            start_delim,
            end_delim
        );
    });

    let it = take_text_between(start_delim, end_delim).parse(input);

    if let Ok((_, output)) = &it
        && output.contains(NEW_LINE)
    {
        DEBUG_MD_PARSER_STDOUT.then(|| {
            println!("{} parser error out for input: {:?}", fg_red("⬢⬢"), input);
        });
        return Err(nom::Err::Error(nom::error::Error {
            input: output,
            code: ErrorKind::CrLf,
        }));
    };

    if it.is_err() {
        DEBUG_MD_PARSER_STDOUT.then(|| {
            println!("{} parser error out for input: {:?}", fg_red("⬢⬢"), input);
        });
    }
    it
}

/// More info: <https://github.com/dimfeld/export-logseq-notes/blob/40f4d78546bec269ad25d99e779f58de64f4a505/src/parse_string.rs#L132>
#[rustfmt::skip]
fn take_text_between<'input>(
    start_tag: &'input str,
    end_tag: &'input str,
) -> impl Parser<&'input str, Output = &'input str, Error = nom::error::Error<&'input str>> {
    map(
        (
            tag(start_tag),
            take_until(end_tag),
            tag(end_tag),
        ),
        |(_start, middle, _end)| middle,
    )
}

#[cfg(test)]
mod tests_parse_take_between {
    use nom::{error::{Error, ErrorKind},
              Err as NomErr};

    use super::*;
    use crate::assert_eq2;

    #[test]
    fn test_fenced() {
        let input = "_foo bar baz_";
        let it = take_text_between("_", "_").parse(input);
        println!("it: {it:?}");
        assert_eq2!(it, Ok(("", "foo bar baz")));

        let input = "_foo bar baz";
        let it = take_text_between("_", "_").parse(input);
        println!("it: {it:?}");
        assert_eq2!(
            it,
            Err(NomErr::Error(Error {
                input: "foo bar baz",
                code: ErrorKind::TakeUntil
            }))
        );

        let input = "foo _bar_ baz";
        let it = take_text_between("_", "_").parse(input);
        println!("it: {it:?}");
        assert_eq2!(
            it,
            Err(NomErr::Error(Error {
                input: "foo _bar_ baz",
                code: ErrorKind::Tag
            }))
        );
    }

    #[test]
    fn test_parse_fenced_no_new_line() {
        let input = "_foo\nbar_";
        let it = take_text_between_delims_err_on_new_line(input, "_", "_");
        println!("it: {it:?}");
        assert_eq2!(
            it,
            Err(NomErr::Error(Error {
                input: "foo\nbar",
                code: ErrorKind::CrLf
            }))
        );

        let input = "_foo bar_";
        let it = take_text_between_delims_err_on_new_line(input, "_", "_");
        println!("it: {it:?}");
        assert_eq2!(it, Ok(("", "foo bar")));
    }
}