Crate piyoparse 

Parser for PiyoLog export text.

piyoparse reads PiyoLog day or month exports into Rust structs. The parser intentionally uses one tolerant path for both iOS and Android export layouts instead of asking callers to classify the platform first.

Example

use piyoparse::{parse, RecordData};

let export = "\
【ぴよログ】2026/5/10(日)
赤ちゃん (6か月21日)

01:40   ミルク 180ml
08:05   母乳 左7分 / 右7分 (30ml)

母乳合計 左 7分 / 右 7分
ミルク合計 1回 180ml
";

let parsed = parse(export)?;
let day = &parsed.days[0];

assert_eq!(day.records.len(), 2);
assert_eq!(day.summary.formula_total_ml, 180);

match &day.records[0].data {
    RecordData::Formula { amount_ml, .. } => assert_eq!(*amount_ml, Some(180)),
    other => panic!("unexpected record data: {other:?}"),
}

This crate is an unofficial tool and is not affiliated with PiyoLog or its operating company.

Structs

Day

Parsed data for one exported day.

DaySummary

Per-day summary totals printed by PiyoLog.

ParsedExport

Parsed PiyoLog export.

Record

One timestamped record in a PiyoLog day.

Enums

BreastMilkOrder

Explicit breastfeeding order.

ParseError

Errors that can occur while reading a PiyoLog export.

RecordData

Parsed data for a PiyoLog record.

Functions

parse

Parses a PiyoLog export.

Type Aliases

Result

Result type returned by parser APIs.