caltemps 0.3.1

A tool to query and report on your iCalendar data from vDirs.
Documentation 
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use chrono::{DateTime, Local};

#[derive(Clone, Debug)]
pub struct CalTempsDateRange {
    pub start: Option<DateTime<Local>>,
    pub end: Option<DateTime<Local>>,
}

impl CalTempsDateRange {
    pub fn new(range_str: String) -> Result<Self, Box<dyn std::error::Error>> {
        // Make this a range
        let range_parts: Vec<&str> = range_str.splitn(2, "..").collect();
        let start_str = range_parts[0];
        let end_str = if range_parts.len() > 1 {
            range_parts[1]
        } else {
            ""
        };
        Ok(CalTempsDateRange {
            start: if start_str.is_empty() {
                // Start was left open, do not limit
                None
            } else {
                Some(Self::read_in_date(start_str, false)?)
            },
            end: if range_parts.len() < 2 {
                // '..' was not used, use 'now' as a limit
                Some(Local::now())
            } else if end_str.is_empty() {
                // end was left open, do not limit
                None
            } else {
                Some(Self::read_in_date(end_str, true)?)
            },
        })
    }
    fn read_in_date(
        dstr: &str,
        _is_end: bool,
    ) -> Result<DateTime<Local>, Box<dyn std::error::Error>> {
        match DateTime::parse_from_rfc3339(dstr) {
            Ok(dt) => Ok(dt.into()),
            Err(error) => Err(Box::new(error)),
        }
    }
}