Class: Rack::Git::File

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/git/file.rb

Constant Summary collapse

F = 
::File

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(root) ⇒ File

Returns a new instance of File.



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# File 'lib/rack/git/file.rb', line 14

def initialize(root)
  @root = root
  @repo = Grit::Repo.new(@root)
end

Instance Attribute Details

#path ⇒ Object Also known as: to_path

Returns the value of attribute path.



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# File 'lib/rack/git/file.rb', line 10

def path
  @path
end

#root ⇒ Object

Returns the value of attribute root.



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# File 'lib/rack/git/file.rb', line 9

def root
  @root
end

Instance Method Details

#_call(env) ⇒ Object 



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# File 'lib/rack/git/file.rb', line 25

def _call(env)
  @branch_name = env['PATH_PREFIX'].sub(/^\//,"") || "master"
  @path_info = Rack::Utils.unescape(env["PATH_INFO"]).sub(/^\//,"")
  return forbidden  if @path_info.include? ".."

  begin
    serving
  rescue SystemCallError
    not_found
  end
end

#call(env) ⇒ Object 



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# File 'lib/rack/git/file.rb', line 19

def call(env)
  dup._call(env)
end

#each ⇒ Object 



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# File 'lib/rack/git/file.rb', line 74

def each
  body = @repo.tree(@branch_name).contents.select{|c| c.name == @path_info}[0].data
  StringIO.new(body, "rb") do |file|
    while part = file.read(8192)
      yield part
    end
  end
end

#forbidden ⇒ Object 



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# File 'lib/rack/git/file.rb', line 37

def forbidden
  body = "Forbidden\n"
  [403, {"Content-Type" => "text/plain",
      "Content-Length" => body.size.to_s,
      "X-Cascade" => "pass"},
    [body]]
end

#not_found ⇒ Object 



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# File 'lib/rack/git/file.rb', line 66

def not_found
  body = "File not found: #{@path_info}\n"
  [404, {"Content-Type" => "text/plain",
      "Content-Length" => body.size.to_s,
      "X-Cascade" => "pass"},
    [body]]
end

#serving ⇒ Object

NOTE:

We check via File::size? whether this file provides size info
via stat (e.g. /proc files often don't), otherwise we have to
figure it out by reading the whole file into memory. And while
we're at it we also use this as body then.



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# File 'lib/rack/git/file.rb', line 51

def serving
  history       = @repo.log(@branch_name, @path_info, :max_count => 1, :skip => 0)
  blob          = history[0].tree / @path_info

  body          = blob.data
  last_modified = history[0].authored_date
  size          = blob.size

  [200, {
      "Last-Modified"  => last_modified.httpdate,
      "Content-Type"   => Rack::Mime.mime_type(F.extname(@path_info), 'text/plain'),
      "Content-Length" => size.to_s
    }, body]
end