Class: AgentX::Response::Headers

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/agentx/response.rb

Defined Under Namespace

Classes: CacheControl

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(hash = {}) ⇒ Headers

Returns a new instance of Headers.



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# File 'lib/agentx/response.rb', line 78

def initialize(hash={})
  @hash = hash
  @hash['Date'] ||= Time.now.httpdate
  @normalized = {}
  @hash.each do |k,v|
    @normalized[k.to_s.downcase] = v
  end
end

Class Method Details

.parse(str) ⇒ Object 



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# File 'lib/agentx/response.rb', line 87

def self.parse(str)
  return new(str) if str.kind_of?(Hash)
  return str      if str.kind_of?(Headers)

  hash = {}

  str.lines.each do |line|
    next if line =~ /^HTTP\/\d/
    k, v = line.split(':', 2).map { |s| s.strip }

    if k && v
      if hash[k]
        hash[k] = Array(hash[k])
        hash[k] << v
      else
        hash[k] = v
      end
    end
  end

  new(hash)
end

Instance Method Details

#[](k) ⇒ Object 



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# File 'lib/agentx/response.rb', line 122

def [](k)
  @hash[k] || @normalized[k.to_s.downcase]
end

#age ⇒ Object 



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# File 'lib/agentx/response.rb', line 134

def age
  (@normalized['age'] || (Time.now - date)).to_i
end

#cache_control ⇒ Object 



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# File 'lib/agentx/response.rb', line 184

def cache_control
  if @normalized['cache-control']
    @cache_control ||= CacheControl.parse(@normalized['cache-control'])
  end
end

#content_length ⇒ Object 



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# File 'lib/agentx/response.rb', line 178

def content_length
  if (length = @normalized['content-length']) && length =~ /^\d+$/
    length.to_i
  end
end

#content_type ⇒ Object 



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# File 'lib/agentx/response.rb', line 162

def content_type
  @normalized['content-type']
end

#date ⇒ Object 



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# File 'lib/agentx/response.rb', line 130

def date
  Time.parse(@normalized['date'])
end

#each(&block) ⇒ Object 



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# File 'lib/agentx/response.rb', line 118

def each(&block)
  @normalized.each(&block)
end

#etag ⇒ Object 



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# File 'lib/agentx/response.rb', line 158

def etag
  @normalized['etag']
end

#expires ⇒ Object 



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# File 'lib/agentx/response.rb', line 138

def expires
  if d = @normalized['expires']
    Time.parse(d)
  end
end

#html? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/agentx/response.rb', line 170

def html?
  content_type.to_s.downcase['html']
end

#inspect ⇒ Object 



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# File 'lib/agentx/response.rb', line 114

def inspect
  "(Headers #{@normalized})"
end

#json? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/agentx/response.rb', line 166

def json?
  content_type.to_s.downcase['json']
end

#last_modified ⇒ Object 



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# File 'lib/agentx/response.rb', line 154

def last_modified
  @normalized['last-modified']
end

#location ⇒ Object 



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# File 'lib/agentx/response.rb', line 194

def location
  @normalized['location']
end

#max_age ⇒ Object 



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# File 'lib/agentx/response.rb', line 144

def max_age
  (cache_control && 
   (cache_control.shared_max_age || cache_control.max_age)) ||
  (expires && (expires - Time.now))
end

#merge(headers) ⇒ Object 



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# File 'lib/agentx/response.rb', line 110

def merge(headers)
  Headers.new(to_hash.merge(headers.to_hash))
end

#server ⇒ Object 



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# File 'lib/agentx/response.rb', line 126

def server
  @normalized['server']
end

#set_cookie ⇒ Object 



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# File 'lib/agentx/response.rb', line 190

def set_cookie
  @normalized['set-cookie']
end

#to_hash ⇒ Object 



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# File 'lib/agentx/response.rb', line 198

def to_hash
  @hash
end

#ttl ⇒ Object 



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# File 'lib/agentx/response.rb', line 150

def ttl
  max_age && (max_age - age)
end

#xml? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/agentx/response.rb', line 174

def xml?
  content_type.to_s.downcase['xml']
end