gribberish 1.0.1

Parse grib 2 files with Rust
Documentation 
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use super::grib_section::GribSection;
use std::str;

fn validate_end_section(data: &[u8]) -> bool {
    match str::from_utf8(&data[0..4]) {
        Ok(s) => s == "7777",
        _ => false,
    }
}

pub struct EndSection<'a> {
    data: &'a [u8],
}

impl<'a> EndSection<'a> {
    pub fn from_data(data: &'a [u8]) -> Self {
        EndSection { data }
    }

    pub fn is_end_section(data: &[u8], offset: usize) -> bool {
        validate_end_section(&data[offset..offset + 4])
    }

    pub fn valid(&self) -> bool {
        validate_end_section(&self.data[0..4])
    }
}

impl<'a> GribSection for EndSection<'a> {
    fn len(&self) -> usize {
        4
    }

    fn number(&self) -> u8 {
        8
    }
}