tyler-hardin / easy-csv Goto Github PK

Add a custom derive to a struct to make it parsable from CSVs. The derive makes it possible to construct a CSVIterator over your type. The backend will ignore extra columns as necessary, and only requires that the columns which have fields in your struct exist. The String::parse<> functions are used to parse CSV fields to the datatype of the field in your struct.

[dependencies]
easy-csv = "0.3.2"
easy-csv-derive = "0.3.2"
csv = "0.15"

csv is a sibling dependency because you have to create the csv::Reader yourself.

extern crate easy_csv;
#[macro_use]
extern crate easy_csv_derive;
extern crate csv;

use easy_csv::{CSVIterator,CSVParsable};

#[derive(Debug,CSVParsable)]
struct Record {
    a : i32,
    b : i8,
    d : String,
}

fn main() {
    let data = "
a,b,c,d
2,-3,foo,bar";

    let mut rdr = csv::Reader::from_string(data);
    let iter = CSVIterator::<Record,_>::new(&mut rdr);
    let res : Vec<Record> = iter.collect();
    println!("{:?}", res);
}

Output: [Record { a: 2, b: -3, d: "bar" }]