clockpunch

Time Parsing

This library comprises the following pieces:

1. Functions for parsing hour:minute strings and outputing minutes, and vice versa
2. A jQuery plugin that binds to an input's change event to automatically update it to the H:MM format and store the integer minute value in a hidden field.
3. A gem that you can use with Rails to include the library through the asset pipeline

Parsing

var parser = new TimeParser()
parser.to_minutes("1:27") // returns 87

Examples and rules

Input		Output in minutes
1:00	1 hour	60
0:45	Forty-five minutes	45
:45	Forty-five minutes	45
45	Forty-five minutes	45
1.5	One and a half hours	90
.5	Half an hour	30
1h30m	1 hour, 30 minutes	90
1h	1 hour	60
20m	20 minutes	20

Bad input

• Negative time is always converted to zero. E.g. "-45" becomes 0 minutes
• All characters besides numbers, decimals, and colons are stripped before any parsing. This means something like "#4ba.2" becomes "4.2", which is 252 minutes.
• If there are multiple colons, everything after the second one is dropped. E.g. "2:30:15" is treated like "2:30"
• If you have both colons and decimals, the string is split first on the colon. Hours are read as a decimal, minutes are rounded down.
  • "1.2:30" is read as 1.2 hours, 30 minutes, coming out as 72.
  • "1:30.2" is read like "1:30"
• See spec/time_parser_spec.coffee for more examples of how input is handled.

Formats

Built-in formats:

• default: "H:MM"
  • Zero-padded minutes
• hm: "HmMMm"
  • Zero-padded minutes
• minutes: MMm
  • Not zero-padded. Always show total minutes. E.g. 90 minutes stays "90m"
• h?m
  • If more than an hour it's the same as 'hm'
  • Does not zero-pad minutes if less than an hour
• long: "H hour(s), M minute(s)"
  • Should only be used in spans (since it is not currently parsable)
  • H will not be shown if zero

To use one of the other formats, just pass it in the constructor, e.g. new TimeParser('hm')

Custom formats

You can also pass custom formats either as a string or a function. This feature is still in development.

Use in Forms

Apply the jQuery plugin to the elements:

$('.timeinput').timeinput();

Rails

Installation

Add this line to your application's Gemfile:

gem "clockpunch"

Include the assets

Add to your application.js

//= require clockpunch

Add to your application.scss

//= require clockpunch

Standalone

Copy app/assets/javascripts/clockpunch.js and app/assets/stylesheets/clockpunch.css into your application and include them using <script src="clockpunch.js"></script> and <style>@import url(clockpunch.css)</style>

Building

From the /source directory, run ./build.sh. This will generate the files in app/assets.

TODO: node, npm installation of coffeescript, sass installation