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							53 lines
						
					
					
						
							1.4 KiB
						
					
					
				
			
		
		
	
	
							53 lines
						
					
					
						
							1.4 KiB
						
					
					
				'use strict'; | 
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var utils = require('./../utils'); | 
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// Headers whose duplicates are ignored by node | 
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// c.f. https://nodejs.org/api/http.html#http_message_headers | 
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var ignoreDuplicateOf = [ | 
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  'age', 'authorization', 'content-length', 'content-type', 'etag', | 
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  'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since', | 
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  'last-modified', 'location', 'max-forwards', 'proxy-authorization', | 
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  'referer', 'retry-after', 'user-agent' | 
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]; | 
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/** | 
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 * Parse headers into an object | 
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 * | 
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 * ``` | 
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 * Date: Wed, 27 Aug 2014 08:58:49 GMT | 
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 * Content-Type: application/json | 
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 * Connection: keep-alive | 
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 * Transfer-Encoding: chunked | 
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 * ``` | 
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 * | 
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 * @param {String} headers Headers needing to be parsed | 
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 * @returns {Object} Headers parsed into an object | 
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 */ | 
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module.exports = function parseHeaders(headers) { | 
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  var parsed = {}; | 
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  var key; | 
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  var val; | 
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  var i; | 
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  if (!headers) { return parsed; } | 
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 | 
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  utils.forEach(headers.split('\n'), function parser(line) { | 
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    i = line.indexOf(':'); | 
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    key = utils.trim(line.substr(0, i)).toLowerCase(); | 
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    val = utils.trim(line.substr(i + 1)); | 
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 | 
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    if (key) { | 
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      if (parsed[key] && ignoreDuplicateOf.indexOf(key) >= 0) { | 
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        return; | 
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      } | 
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      if (key === 'set-cookie') { | 
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        parsed[key] = (parsed[key] ? parsed[key] : []).concat([val]); | 
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      } else { | 
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        parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val; | 
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      } | 
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    } | 
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  }); | 
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  return parsed; | 
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};
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