Module: URI

Defined in:
lib/contrib/uri_ext.rb

Overview

Not quite open-uri, but similar. Provides read and write methods for the resource represented by the URI. Currently supports reads for URI::HTTP and writes for URI::SFTP. Also provides convenience methods for downloads and uploads.

Defined Under Namespace

Classes: Generic, HTTP, NotFoundError

Class Method Summary collapse

Class Method Details

.download(uri, target, options = nil) ⇒ Object

:call-seq:

download(uri, target, options?)

Downloads the resource to the target.

The target may be a file name (string or task), in which case the file is created from the resource. The target may also be any object that responds to write, e.g. File, StringIO, Pipe.

Use the progress bar when running in verbose mode.



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# File 'lib/contrib/uri_ext.rb', line 57

def download(uri, target, options = nil)
  uri = URI.parse(uri.to_s) unless URI === uri
  uri.download(target, options)
end

.read(uri, options = nil, &block) ⇒ Object

:call-seq:

read(uri, options?) => content
read(uri, options?) { |chunk| ... }

Reads from the resource behind this URI. The first form returns the content of the resource, the second form yields to the block with each chunk of content (usually more than one).

For example:

File.open "image.jpg", "w" do |file|
  URI.read("http://example.com/image.jpg") { |chunk| file.write chunk }
end

Shorter version:

File.open("image.jpg", "w") { |file| file.write URI.read("http://example.com/image.jpg") }

Supported options:

  • :modified – Only download if file modified since this timestamp. Returns nil if not modified.

  • :progress – Show the progress bar while reading.



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# File 'lib/contrib/uri_ext.rb', line 43

def read(uri, options = nil, &block)
  uri = URI.parse(uri.to_s) unless URI === uri
  uri.read(options, &block)
end

.write(uri, *args, &block) ⇒ Object

:call-seq:

write(uri, content, options?)
write(uri, options?) { |bytes| .. }

Writes to the resource behind the URI. The first form writes the content from a string or an object that responds to read and optionally size. The second form writes the content by yielding to the block. Each yield should return up to the specified number of bytes, the last yield returns nil.

For example:

File.open "killer-app.jar", "rb" do |file|
  write("sftp://localhost/jars/killer-app.jar") { |chunk| file.read(chunk) }
end

Or:

write "sftp://localhost/jars/killer-app.jar", File.read("killer-app.jar")

Supported options:

  • :progress – Show the progress bar while reading.



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# File 'lib/contrib/uri_ext.rb', line 79

def write(uri, *args, &block)
  uri = URI.parse(uri.to_s) unless URI === uri
  uri.write(*args, &block)
end