umya-spreadsheet 3.0.0

umya-spreadsheet is a library written in pure Rust to read and write xlsx file.
Documentation 
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use std::io;

use quick_xml::{
    Reader,
    events::Event,
};

use super::{
    XlsxError,
    driver::{
        get_attribute,
        xml_read_loop,
    },
};
use crate::{
    helper::const_str::{
        PIVOT_CACHE_DEF_NS,
        PKG_WORKBOOK_RELS,
    },
    structs::Workbook,
};

pub(crate) fn read<R: io::Read + io::Seek>(
    arv: &mut zip::read::ZipArchive<R>,
    wb: &mut Workbook,
) -> Result<Vec<(String, String, String)>, XlsxError> {
    let r = io::BufReader::new(super::driver::zip_by_name(arv, PKG_WORKBOOK_RELS)?);
    let mut reader = Reader::from_reader(r);
    reader.config_mut().trim_text(true);

    let mut result: Vec<(String, String, String)> = Vec::new();

    xml_read_loop!(
        reader,
        Event::Empty(ref e) => {
            if e.name().into_inner() == b"Relationship" {
                let id_value = get_attribute(e, b"Id").unwrap();
                let type_value = get_attribute(e, b"Type").unwrap();
                let target_value = get_attribute(e, b"Target").unwrap();
                let target_value = target_value
                    .strip_prefix("/xl/")
                    .map(ToOwned::to_owned)
                    .unwrap_or(target_value);
                if type_value == PIVOT_CACHE_DEF_NS {
                    wb.update_pivot_caches(id_value.as_str(), target_value.as_str());
                }
                result.push((id_value, type_value, target_value));
            }
        },
        Event::Eof => break,
    );

    Ok(result)
}