Class: Dassets::Server::Response::Body

Inherits:
Object
  • Object
show all
Defined in:
lib/dassets/server/response.rb

Overview

This class borrows from the body range handling in Rack::File and adapts it for use with Dasset’s asset files and their generic string content.

Constant Summary collapse

CHUNK_SIZE =

8k

(8*1024).freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(env, asset_file) ⇒ Body

Returns a new instance of Body.



55
56
57
58
59
 
# File 'lib/dassets/server/response.rb', line 55

def initialize(env, asset_file)
  @asset_file = asset_file
  @range, @content_range = get_range_info(env, @asset_file)
  @size = self.range_end - self.range_begin + 1
end

Instance Attribute Details

#asset_file ⇒ Object (readonly)

Returns the value of attribute asset_file.



53
54
55
 
# File 'lib/dassets/server/response.rb', line 53

def asset_file
  @asset_file
end

#content_range ⇒ Object (readonly)

Returns the value of attribute content_range.



53
54
55
 
# File 'lib/dassets/server/response.rb', line 53

def content_range
  @content_range
end

#size ⇒ Object (readonly)

Returns the value of attribute size.



53
54
55
 
# File 'lib/dassets/server/response.rb', line 53

def size
  @size
end

Instance Method Details

#==(other_body) ⇒ Object 



93
94
95
96
97
98
99
100
101
 
# File 'lib/dassets/server/response.rb', line 93

def ==(other_body)
  if other_body.is_a?(self.class)
    self.asset_file  == other_body.asset_file  &&
    self.range_begin == other_body.range_begin &&
    self.range_end   == other_body.range_end
  else
    super
  end
end

#each ⇒ Object 



73
74
75
76
77
78
79
80
81
82
83
84
85
 
# File 'lib/dassets/server/response.rb', line 73

def each
  StringIO.open(@asset_file.content, "rb") do |io|
    io.seek(@range.begin)
    remaining_len = self.size
    while remaining_len > 0
      part = io.read([CHUNK_SIZE, remaining_len].min)
      break if part.nil?

      remaining_len -= part.length
      yield part
    end
  end
end

#inspect ⇒ Object 



87
88
89
90
91
 
# File 'lib/dassets/server/response.rb', line 87

def inspect
  "#<#{self.class}:#{"0x0%x" % (self.object_id << 1)} " \
    "digest_path=#{self.asset_file.digest_path} " \
    "range_begin=#{self.range_begin} range_end=#{self.range_end}>"
end

#partial? ⇒ Boolean

Returns:

  • (Boolean) 


61
62
63
 
# File 'lib/dassets/server/response.rb', line 61

def partial?
  !@content_range.nil?
end

#range_begin ⇒ Object 



65
66
67
 
# File 'lib/dassets/server/response.rb', line 65

def range_begin
  @range.begin
end

#range_end ⇒ Object 



69
70
71
 
# File 'lib/dassets/server/response.rb', line 69

def range_end
  @range.end
end