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Size: 1.87 KB
Versions: 39
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Stored size: 1.87 KB
Contents
require 'faraday'
require 'open-uri'
require 'action_view'
require 'pdf-reader'
require 'humanize-bytes'
module Plugins
class PDFinfo
include Cinch::Plugin
include Cinch::Helpers
include ActionView::Helpers::DateHelper
enable_acl(:nobody, false)
self.plugin_name = 'PDF Information'
self.help = 'This plugin will check a url for a pdf link and fetch metadata from it'
# Default list of URL regexps to ignore.
DEFAULT_ALLOWED = [/\.pdf$/i].freeze
FILE_SIZE_LIMIT = 4000000
match %r{(https?://.*?)(?:\s|$|,|\.\s|\.$)}, :use_prefix => false
def execute(msg, url)
allowedlist = DEFAULT_ALLOWED.dup
allowedlist.concat(config[:blacklist]) if config[:blacklist]
return unless allowedlist.any? { |entry| url =~ entry }
debug "URL matched: #{url}"
# Grab header and check filesize
# one line to make request
head = Faraday.head url
# example with headers
file_size = head.headers['Content-Length']
humanize_size = Humanize::Byte.new(file_size.to_i).to_k.to_s.to_i.round(2)
if file_size.to_i > FILE_SIZE_LIMIT
return msg.reply("PDF → Unable to parse. file too big #{humanize_size}kb")
end
# Get file and parse metadata
open(url, "rb") do |io|
reader = PDF::Reader.new(io)
creator = reader.info[:Creator] || 'Anon'
producer = reader.info[:Producer] || 'Anon'
creation = reader.info[:CreationDate] || 'now'
modification = reader.info[:ModDate] || 'now'
title = reader.info[:Title] || nil
display = title ? title : "Title: None <> Creator: #{creator} <> Producer: #{producer} <> Creation: #{creation}"
msg.reply "PDF (#{humanize_size}kb) → #{display}"
end
rescue => e
error "#{e.class.name}: #{e.message}"
end
end
end
# AutoLoad
Bot.config.plugins.plugins.push Plugins::PDFinfo
Version data entries
39 entries across 39 versions & 1 rubygems