class FaradayJSON::ParseJson
Public: Parse response bodies as JSON.
Constants
- CONTENT_TYPE
Private Class Methods
new(app = nil, options = {})
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Calls superclass method
# File lib/faraday_json/parse_json.rb, line 22 def initialize(app = nil, options = {}) super(app) @options = options @content_types = Array(options[:content_type]) end
Private Instance Methods
call(environment)
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# File lib/faraday_json/parse_json.rb, line 28 def call(environment) @app.call(environment).on_complete do |env| if process_response_type?(response_type(env)) and parse_response?(env) process_response(env) end end end
parse_response?(env)
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# File lib/faraday_json/parse_json.rb, line 86 def parse_response?(env) env[:body].respond_to? :to_str end
preserve_raw?(env)
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# File lib/faraday_json/parse_json.rb, line 90 def preserve_raw?(env) env[:request].fetch(:preserve_raw, @options[:preserve_raw]) end
process_response(env)
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# File lib/faraday_json/parse_json.rb, line 36 def process_response(env) env[:raw_body] = env[:body] if preserve_raw?(env) body = env[:body] # Body will be in an unknown encoding. Use charset field to coerce it to # internal UTF-8. charset = response_charset(env) # We must ensure we're interpreting the body as the right charset. First, # strip the BOM (if any). body = strip_bom(body, charset, { 'default_encoding' => 'us-ascii' }) # Transcode to UTF-8 body = to_utf8(body, charset, { 'force_input_charset' => true }) # Now that's done, parse the JSON. ret = nil begin ret = ::JSON.parse(body) unless body.strip.empty? rescue StandardError, SyntaxError => err raise err if err.is_a? SyntaxError and err.class.name != 'Psych::SyntaxError' raise Faraday::Error::ParsingError, err end env[:body] = ret end
process_response_type?(type)
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# File lib/faraday_json/parse_json.rb, line 80 def process_response_type?(type) @content_types.empty? or @content_types.any? { |pattern| pattern.is_a?(Regexp) ? type =~ pattern : type == pattern } end
response_charset(env)
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# File lib/faraday_json/parse_json.rb, line 68 def response_charset(env) header = env[:response_headers][CONTENT_TYPE].to_s if header.index(';') header.split(';').each do |part| if part.index('charset=') return part.split('charset=', 2).last end end end return nil end
response_type(env)
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# File lib/faraday_json/parse_json.rb, line 62 def response_type(env) type = env[:response_headers][CONTENT_TYPE].to_s type = type.split(';', 2).first if type.index(';') type end