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Contents
# encoding: utf-8
require 'open-uri'
module CarrierWave
module Uploader
module Download
extend ActiveSupport::Concern
include CarrierWave::Uploader::Callbacks
include CarrierWave::Uploader::Configuration
include CarrierWave::Uploader::Cache
class RemoteFile
def initialize(uri)
@uri = uri
end
def original_filename
File.basename(file.base_uri.path)
end
def respond_to?(*args)
super or file.respond_to?(*args)
end
def http?
@uri.scheme =~ /^https?$/
end
private
def file
if @file.blank?
@file = Kernel.open(@uri.to_s)
@file = @file.is_a?(String) ? StringIO.new(@file) : @file
end
@file
end
def method_missing(*args, &block)
file.send(*args, &block)
end
end
##
# Caches the file by downloading it from the given URL.
#
# === Parameters
#
# [url (String)] The URL where the remote file is stored
#
def download!(uri)
unless uri.blank?
processed_uri = process_uri(uri)
file = RemoteFile.new(processed_uri)
raise CarrierWave::DownloadError, "trying to download a file which is not served over HTTP" unless file.http?
cache!(file)
end
end
##
# Processes the given URL by parsing and escaping it. Public to allow overriding.
#
# === Parameters
#
# [url (String)] The URL where the remote file is stored
#
def process_uri(uri)
URI.parse(URI.escape(URI.unescape(uri)).gsub("[", "%5B").gsub("]", "%5D").gsub("+", "%2B"))
end
end # Download
end # Uploader
end # CarrierWave
Version data entries
58 entries across 53 versions & 4 rubygems