From: Koen Vervloesem <koen.vervloesem@...>
Date: 2003-07-06T04:03:44+09:00
Subject: [ANN] unclose 0.1 alpha


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Hi,

Today I made a simple tool for MacOS X. I heavily use the "open" 
command in MacOS X: When I'm working in the Terminal and I want to open 
a PDF file in Acrobat Reader, I just have to type "open file.pdf" and 
it opens quickly in Acrobat Reader. But when I know the url of a PDF 
file on the net, an I type "open http://blabla.org/file.pdf", it opens 
an empty Safari window before opening the PDF file in Acrobat Reader. 
That's because "open" opens all files in a http url with the standard 
browser.

That gave me the idea to make a configurable script that can open local 
and remote files like the command "open", but you can specify in a 
configuration file which remote files the script has to open with the 
default browser. Regularly, you want html files (and php and some 
others) to be opened by your browser directly, and all others (pdf, ps, 
tar.gz) downloaded by the unclose script and opened by their standard 
application. So you don't get an empty browser window with Safari.

I have included the source code of unclose.rb. All arguments to the 
script are opened as files or urls. You can configure unclose.rb in a 
file .uncloserc in your home directory. This file can contain e.g.:

download_dir ~/Desktop/Download
no_download html
no_download php

This says all downloaded files will be downloaded in de directory 
Desktop/Download in your home directory, and that remote html and php 
files will be viewed directly by your browser and not downloaded by 
unclose to be viewed locally by your browser.

I'd like to get some comments. I want to extend unclose to be used with 
other operating systems if e.g. GNU/Linux or MS Windows have a similar 
command as the "open" command. And I will support more protocols, like 
ftp and scp. After that, I will package it in RAA.

Regards,

Koen Vervloesem
--
"Men have a gene which enables them to answer any question, no matter 
how complex or important, with Mmm."
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# unclose 0.1 alpha
# A helper script for the MacOS X "open" command.
#
# (c) 2003 Koen Vervloesem
# mailto: koen.vervloesem@st.cs.kuleuven.ac.be

require 'uri'
require 'net/http'

# The class Encloser has one public method: open.
# With this method, one can open a remote or local file.
class Uncloser 

  # Open <document>.
  def Uncloser.open(document)
    doc_uri =  uri(document)
    if doc_uri != nil and download?(doc_uri)
      document = to_download_dir(document)
      download(doc_uri, document)
    end
    openlocal(document)
  end

  private
  
  # Download <uri> and save it in file with name <filename>
  def Uncloser.download(uri, filename)
    Net::HTTP.start(uri.host, uri.port) {|http|
      response = http.get(uri.path)
      f = File.new(filename, "w")             
      f.syswrite(response.body)
      f.close
    }
  end

  # Do we have to download <uri>?
  def Uncloser.download?(uri)
    filename = uri.path
    if filename.include?(".")
      extension = filename.split(".").last
      puts extension
      UncloseConfig.download?(extension)
    else
      true
    end
  end

  # Open the local file <document> with the system's open command.
  def Uncloser.openlocal(document)
    system(UncloseConfig.open_command, document)
  end

  # Give the full path of the downloaded file <document>.
  def Uncloser.to_download_dir(document)
    UncloseConfig.download_dir + "/" + File.basename(URI.parse(document).path)
  end

  # Give a supported uri object of <document>.
  # Now only the http scheme is supported.
  def Uncloser.uri(document)
    uri = URI.parse(document)
    if uri.scheme == 'http'
      uri
    else
      nil
    end
  end

end

# This class reads the configuration of Unclose in its configuration file.
class UncloseConfig

  CONFIG_FILE = ENV["HOME"] + "/.uncloserc"

  # Do we have to download a file with extension <extension>?
  def UncloseConfig.download?(extension)
    ignore =[]
    if FileTest.exists?(CONFIG_FILE)
      IO.foreach(CONFIG_FILE) { |line|
        puts line
        if line =~ /^no_download\s+(\S+)/
          ignore << $1.upcase
        end
      }
    end
    !ignore.include?(extension.upcase)
  end

  # What is the download directory?
  def UncloseConfig.download_dir
    dir = "."
    if FileTest.exists?(CONFIG_FILE)
      IO.foreach(CONFIG_FILE) { |line|
        if line =~ /^download_dir\s+(\S+)/ and FileTest.directory?(File.expand_path($1))
          dir = File.expand_path($1)
        end
      }
    end
    dir
  end

  # What is the open command of our operating system?
  def UncloseConfig.open_command
    command = "open"
    if FileTest.exists?(CONFIG_FILE)
      IO.foreach(CONFIG_FILE) { |line|
        if line =~ /^open_command\s+(\S+)/ and FileTest.executable?($1)
          dir = $1
        end
      }
    end
    command
  end

end

# Open all arguments with Uncloser.
ARGV.each {|x| Uncloser.open(x)}

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