Class: CarrierWave::Downloader::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/carrierwave/downloader/base.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(uploader) ⇒ Base

Returns a new instance of Base.


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# File 'lib/carrierwave/downloader/base.rb', line 10

def initialize(uploader)
  @uploader = uploader
end

Instance Attribute Details

#uploader ⇒ Object (readonly)

Returns the value of attribute uploader


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# File 'lib/carrierwave/downloader/base.rb', line 8

def uploader
  @uploader
end

Instance Method Details

#download(url, remote_headers = {}) ⇒ Object

Downloads a file from given URL and returns a RemoteFile.

Parameters

url (String)

The URL where the remote file is stored

remote_headers (Hash)

Request headers


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# File 'lib/carrierwave/downloader/base.rb', line 22

def download(url, remote_headers = {})
  headers = remote_headers.
    reverse_merge('User-Agent' => "CarrierWave/#{CarrierWave::VERSION}")
  begin
    file = OpenURI.open_uri(process_uri(url.to_s), headers)
  rescue StandardError => e
    raise CarrierWave::DownloadError, "could not download file: #{e.message}"
  end
  CarrierWave::Downloader::RemoteFile.new(file)
end

#process_uri(uri) ⇒ Object

Processes the given URL by parsing and escaping it. Public to allow overriding.

Parameters

url (String)

The URL where the remote file is stored


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# File 'lib/carrierwave/downloader/base.rb', line 40

def process_uri(uri)
  uri_parts = uri.split('?')
  encoded_uri = Addressable::URI.parse(uri_parts.shift).normalize.to_s
  encoded_uri << '?' << Addressable::URI.encode(uri_parts.join('?')).gsub('%5B', '[').gsub('%5D', ']') if uri_parts.any?
  URI.parse(encoded_uri)
rescue URI::InvalidURIError, Addressable::URI::InvalidURIError
  raise CarrierWave::DownloadError, "couldn't parse URL: #{uri}"
end