Class: Smithy::DownloadCache

Inherits:
Object
  • Object
show all
Defined in:
lib/smithy/download_cache.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(p, fname = nil) ⇒ DownloadCache

Returns a new instance of DownloadCache.



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# File 'lib/smithy/download_cache.rb', line 5

def initialize(p, fname = nil)
  @url = ''
  @checksums = {}
  if p.is_a? Formula
    @url = p.try(:url)
    @checksums.merge!(:md5 => p.md5) if p.try(:md5)
    @checksums.merge!(:sha1 => p.sha1) if p.try(:sha1)
    @checksums.merge!(:sha256 => p.sha256) if p.try(:sha256)
    @name = p.try(:package).try(:name)
    @version = p.try(:package).try(:version)
  elsif p.is_a? Package
    @name = p.name
    @version = p.version
  end

  @name = fname unless fname.blank?
end

Instance Attribute Details

#checksums ⇒ Object

Returns the value of attribute checksums.



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# File 'lib/smithy/download_cache.rb', line 3

def checksums
  @checksums
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/smithy/download_cache.rb', line 3

def name
  @name
end

#url ⇒ Object

Returns the value of attribute url.



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# File 'lib/smithy/download_cache.rb', line 3

def url
  @url
end

#version ⇒ Object

Returns the value of attribute version.



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# File 'lib/smithy/download_cache.rb', line 3

def version
  @version
end

Instance Method Details

#checksum_download ⇒ Object 



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# File 'lib/smithy/download_cache.rb', line 45

def checksum_download
  return true if checksums.empty?
  return false unless downloaded?

  checksums.keys.each do |type|
    checksum = checksums[type]
    digest = ''
    case type
    when :md5
      require 'digest/md5'
      digest = Digest::MD5.hexdigest(File.read(downloaded_file_path))
    when :sha1
      require 'digest/sha1'
      digest = Digest::SHA1.hexdigest(File.read(downloaded_file_path))
    when :sha256
      require 'digest/sha2'
      digest = Digest::SHA256.hexdigest(File.read(downloaded_file_path))
    end

    if checksum != digest
      raise <<-EOF.strip_heredoc
        file does not match expected #{type.to_s.upcase} checksum
          expected: #{checksum}
          got:      #{digest}
      EOF
    else
      return true
    end
  end
end

#download ⇒ Object 



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# File 'lib/smithy/download_cache.rb', line 76

def download
  curl = '/usr/bin/curl'
  curl = `which curl` unless File.exist? curl
  raise "curl cannot be located, without it files cannot be downloaded" if curl.blank?

  if downloaded?
    puts "downloaded ".rjust(12).color(:green) + downloaded_file_path
    return true
  else
    puts "download ".rjust(12).color(:green) + url
  end

  args = ['-qf#L']
  args << "--silent" unless $stdout.tty?
  args << '-o'
  args << downloaded_file_path
  args << url

  FileUtils.mkdir_p downloaded_file_dir
  [downloaded_file_dir, File.join(downloaded_file_dir, '..')].each do |dir|
    FileOperations.set_group(dir, Smithy::Config.global[:"file-group-name"])
    FileOperations.make_group_writable(dir) unless Smithy::Config.global[:"disable-group-writable"]
  end

  if system(curl, *args)
    FileOperations.set_group(downloaded_file_path, Smithy::Config.global[:"file-group-name"])
    FileOperations.make_group_writable(downloaded_file_path) unless Smithy::Config.global[:"disable-group-writable"]
    return true
  else
    return false
  end
end

#download_cache_dir ⇒ Object 



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# File 'lib/smithy/download_cache.rb', line 23

def download_cache_dir
  dir = Smithy::Config.global[:"download-cache"]
  dir = File.join(Smithy::Config.homedir, '.smithy/cache') if dir.blank?
  dir
end

#downloaded? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/smithy/download_cache.rb', line 41

def downloaded?
  File.exists?(downloaded_file_path)
end

#downloaded_file_dir ⇒ Object 



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# File 'lib/smithy/download_cache.rb', line 33

def downloaded_file_dir
  File.join(download_cache_dir, name, version)
end

#downloaded_file_name ⇒ Object 



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# File 'lib/smithy/download_cache.rb', line 29

def downloaded_file_name
  url_filename(url)
end

#downloaded_file_path ⇒ Object 



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# File 'lib/smithy/download_cache.rb', line 37

def downloaded_file_path
  File.join(downloaded_file_dir, downloaded_file_name)
end

#get(passed_url = nil) ⇒ Object 



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# File 'lib/smithy/download_cache.rb', line 109

def get(passed_url= nil)
  @url = passed_url if passed_url
  if download && checksum_download
    return downloaded_file_path
  else
    return false
  end
end