2015-11-06 18:24:38 +00:00
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require "json"
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2015-10-29 15:16:29 +00:00
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# ParamParser parses the request contents including query_params and body
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# and converts them into a params hash which you can within the environment
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# context.
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2015-11-06 18:24:38 +00:00
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alias AllParamTypes = Nil | String | Int64 | Float64 | Bool | Hash(String, JSON::Type) | Array(JSON::Type)
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2015-10-28 18:38:24 +00:00
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class Kemal::ParamParser
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2015-11-05 10:38:06 +00:00
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URL_ENCODED_FORM = "application/x-www-form-urlencoded"
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2015-11-06 18:24:38 +00:00
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APPLICATION_JSON = "application/json"
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2015-11-05 10:38:06 +00:00
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2015-10-28 18:30:27 +00:00
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def initialize(@route, @request)
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2015-11-06 18:24:38 +00:00
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@params = {} of String => AllParamTypes
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2015-10-28 18:30:27 +00:00
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end
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def parse
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parse_request
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end
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def parse_request
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2016-01-12 19:37:12 +00:00
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parse_url_params
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2015-11-05 10:38:06 +00:00
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parse_query
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parse_body
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2015-11-06 18:24:38 +00:00
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parse_json
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2015-10-28 18:30:27 +00:00
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@params
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end
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2015-11-05 10:38:06 +00:00
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def parse_body
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2015-12-02 19:57:23 +00:00
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return if (@request.headers["Content-Type"]? =~ /#{URL_ENCODED_FORM}/).nil?
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2015-11-05 10:38:06 +00:00
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parse_part(@request.body)
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end
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def parse_query
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parse_part(@request.query)
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end
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2016-01-12 19:37:12 +00:00
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def parse_url_params
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parse_part(@request.url_params.to_s)
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end
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2015-12-31 12:03:11 +00:00
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# Parses JSON request body if Content-Type is `application/json`.
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# If request body is a JSON Hash then all the params are parsed and added into `params`.
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# If request body is a JSON Array it's added into `params` as `_json` and can be accessed
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# like params["_json"]
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2015-11-06 18:24:38 +00:00
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def parse_json
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2015-11-10 00:35:28 +00:00
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return unless @request.body && @request.headers["Content-Type"]? == APPLICATION_JSON
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2015-11-10 11:30:16 +00:00
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2015-11-06 18:24:38 +00:00
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body = @request.body as String
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2015-12-24 16:09:33 +00:00
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case json = JSON.parse(body).raw
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2015-11-10 11:30:16 +00:00
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when Hash
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json.each do |k, v|
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@params[k as String] = v as AllParamTypes
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end
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when Array
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@params["_json"] = json
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2015-11-06 18:24:38 +00:00
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end
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end
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2015-11-05 10:38:06 +00:00
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def parse_part(part)
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return unless part
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HTTP::Params.parse(part) do |key, value|
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@params[key] ||= value
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end
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end
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2015-10-28 18:30:27 +00:00
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end
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