Print a forecast of upcoming events from iCal files
initial version
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LICENSE
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LICENSE
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Copyright (c) 2010, 2014, 2017 joshua stein <jcs@jcs.org>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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README.md
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README.md
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## `ical_forecast`
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Print a forecast of upcoming events from a list of iCal files.
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### Installation
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`gem install ri_cal tzinfo`
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### Usage
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jcs@humble:~> ruby ical_forecast.rb ~/.cals/*.cal
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some far out event in 3 weeks, 6 days (wed 1 sep)
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something here in 1 day (fri 6 aug to sun 8 aug)
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some timed event today at 08:45 (thu 5 aug)
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### Related
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[remind_forecast](https://github.com/jcs/remind_forecast) which
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does the same thing from `remind` or `iCalBuddy`.
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ical_forecast.rb
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ical_forecast.rb
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#!/usr/bin/env ruby
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#
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# ical_forecast.rb
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# print upcoming events from iCal files
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#
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# Copyright (c) 2010, 2014, 2017 joshua stein <jcs@jcs.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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require "ri_cal"
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require "tzinfo"
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require "date"
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FORECAST_SPAN = (60 * 60 * 24 * 7)
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BOLD = "\e[1;1m"
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UNBOLD = "\e[0;0m"
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GRAY = "\e[38;5;239m"
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LIGHTGRAY = "\e[38;5;242m"
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RESET = "\e[0;0m"
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upcoming = []
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if !ARGV.any? || ARGV[0] == "-h"
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puts "usage: #{$0} <ical file...>"
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exit 1
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end
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ARGV.each do |file|
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RiCal.parse(File.open(file)).first.events.each do |ev|
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ev.occurrences(:count => 10).each do |oc|
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begin
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start = oc.dtstart.to_time.getlocal
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finish = oc.dtend.to_time.getlocal
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rescue RiCal::InvalidTimezoneIdentifier
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next
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end
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if finish < Time.now || start > (Time.now + FORECAST_SPAN)
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next
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end
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upcoming.push oc
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end
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end
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end
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upcoming.sort_by{|u| u.dtstart.to_time.getlocal }.reverse.each do |ev|
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start = ev.dtstart.to_time.getlocal
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finish = ev.dtend.to_time.getlocal
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weeks = 0
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days = ((start - Time.now) / (60 * 60 * 24)).ceil
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if days > 7
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weeks = (days.to_f / 7.0).floor
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days = days - (weeks * 7)
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end
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out = ""
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if weeks == 0 && days == 0
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out << BOLD
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elsif weeks == 1
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out << GRAY
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elsif weeks > 1
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out << LIGHTGRAY
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end
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out << ev.summary << " "
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if weeks > 0
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out << "in #{weeks} week#{weeks == 1 ? "" : "s"}"
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if days > 0
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out << ", #{days} day#{days == 1 ? "" : "s"}"
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end
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else
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if days < -1
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out << "#{days.abs} day#{days == -1 ? "" : "s"} ago"
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elsif days == -1
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out << "yesterday"
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elsif days == 0
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out << "today"
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elsif days == 1
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out << "tomorrow"
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else
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out << "in #{days} day#{days == 1 ? "" : "s"}"
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end
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end
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all_day = (start != finish && start.hour == 0 && finish.hour == 0 &&
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(finish.to_i - start.to_i == (60 * 60 * 24)))
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if !all_day
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out << " at #{start.strftime("%H:%M")}"
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if start.to_date == Time.now.to_date
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mins = ((Time.now - start) / 60).floor
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if start < Time.now
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out << " (#{mins} minute#{mins == 1 ? "" : "s"} ago)"
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else
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out << " (in #{mins} minute#{mins == 1 ? "" : "s"})"
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end
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end
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end
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if weeks == 0 && days == 0
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out << UNBOLD
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end
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out << " (" << start.strftime("%a #{start.day} %b").downcase
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if !all_day && (start.to_date != finish.to_date)
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out << " to " << finish.strftime("%a #{finish.day} %b").downcase
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end
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out << ")"
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out << RESET
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puts out
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end