Crate date_time_parser

Date Time Parser: Rust NLP Library

It aims to parse unstructered text into NaiveDate and NaiveTime formats.

• Date Time Parser has the ability to be timezone aware, but defaults to UTC.
• Allows for parse to be relative to current date/time, or relative to a custom date/time.
• Leverages chrono and regex crates.

Usage

Put this in your Cargo.toml:

[dependencies]
date_time_parser = "0.1.0"

Then put this in your crate root:

extern crate date_time_parser;

Example: Find a Date

General use of this package involves passing English natural language that includes a date to the DateParser struct to parse the expression. If a date is found, it will parse the expression into the NaiveDate format.

use date_time_parser::DateParser;
use chrono::{prelude::*, Duration, Local, NaiveDate, NaiveDateTime, Weekday};

let date = DateParser::parse("Lunch on June 5th");
let year = Local::now().year();
assert_eq!(date, Some(NaiveDate::from_ymd(year, 6, 5)));

Example: Find a Time

Similarly to parsing dates, this package can also be used to parse time expressions. Pass English natural language that includes a time (relative or absolute) to the TimeParser struct to parse the text. A successful parse results in a NaiveTime from the natural language expression.

use date_time_parser::TimeParser;
use chrono::NaiveTime;

let time = TimeParser::parse("6:30pm dinner");
assert_eq!(time, Some(NaiveTime::from_hms(18, 30, 0)));

Example: Not a Date/Time

If the package gets an expression that for it cannot find a valid date or time, the TimeParser::parse function will return None for that string.

use date_time_parser::TimeParser;
use chrono::NaiveTime;

let time = TimeParser::parse("foo bar");
assert_eq!(time, None);

Structs

DateParser

Container for parsing dates from string slices.

TimeParser

Container for parsing times from string slices.

Traits

Recognizable

An interface for dealing with parsing unstructured text. Implement this trait for your abstract syntax when parsing.