xdf 0.1.2

Read XDF Files
Documentation 
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use nom::{error::context, IResult};

use crate::{util::parse_version, FileHeaderChunk};

use super::{chunk_content, chunk_tags::file_header_tag, xml::xml};

pub(crate) fn file_header(input: &[u8]) -> IResult<&[u8], FileHeaderChunk> {
    let (input, chunk_content) = context("file_header chunk_content", chunk_content)(input)?;

    let (chunk_content, _tag) = context("file_header tag", file_header_tag)(chunk_content)?;
    let (_chunk_content, xml) = context("file_header xml", |i| xml(i))(chunk_content)?;

    let version = parse_version(&xml)
        .map_err(|_e| nom::Err::Failure(nom::error::Error::new(input, nom::error::ErrorKind::Float)))?; // not how these errors should be used but nom is a bit of a pain here

    Ok((input, FileHeaderChunk { version, xml }))
}