| File | % covered | Lines | Relevant Lines | Lines covered | Lines missed | Avg. Hits / Line |
|---|---|---|---|---|---|---|
| lib/sinatra/param.rb | 100.0 % | 136 | 80 | 80 | 0 | 22.3 |
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require 'sinatra/base'
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require 'sinatra/param/version'
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require 'date'
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require 'time'
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module Sinatra
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module Param
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Boolean = :boolean
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class InvalidParameterError < StandardError
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attr_accessor :param, :options
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end
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def param(name, type, options = {})
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name = name.to_s
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return unless params.member?(name) or options[:default] or options[:required]
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begin
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params[name] = coerce(params[name], type, options)
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params[name] = (options[:default].call if options[:default].respond_to?(:call)) || options[:default] if params[name].nil? and options[:default]
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params[name] = options[:transform].to_proc.call(params[name]) if params[name] and options[:transform]
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validate!(params[name], options)
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rescue InvalidParameterError => exception
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if options[:raise] or (settings.raise_sinatra_param_exceptions rescue false)
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exception.param, exception.options = name, options
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raise exception
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end
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error = "Invalid Parameter: #{name}"
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if content_type and content_type.match(mime_type(:json))
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error = {message: error, errors: {name => exception.message}}.to_json
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end
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halt 400, error
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end
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end
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def one_of(*args)
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options = args.last.is_a?(Hash) ? args.pop : {}
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names = args.collect(&:to_s)
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return unless names.length >= 2
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begin
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validate_one_of!(params, names, options)
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rescue InvalidParameterError => exception
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if options[:raise] or (settings.raise_sinatra_param_exceptions rescue false)
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exception.param, exception.options = names, options
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raise exception
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end
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error = "Parameters #{names.join(', ')} are mutually exclusive"
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if content_type and content_type.match(mime_type(:json))
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error = {message: error, errors: {names => exception.message}}.to_json
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end
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halt 400, error
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end
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end
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private
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def coerce(param, type, options = {})
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begin
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return nil if param.nil?
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return param if (param.is_a?(type) rescue false)
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return Integer(param) if type == Integer
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return Float(param) if type == Float
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return String(param) if type == String
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return Date.parse(param) if type == Date
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return Time.parse(param) if type == Time
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return DateTime.parse(param) if type == DateTime
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return Array(param.split(options[:delimiter] || ",")) if type == Array
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return Hash[param.split(options[:delimiter] || ",").map{|c| c.split(options[:separator] || ":")}] if type == Hash
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return (/(false|f|no|n|0)$/i === param.to_s ? false : (/(true|t|yes|y|1)$/i === param.to_s ? true : nil)) if type == TrueClass || type == FalseClass || type == Boolean
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return nil
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rescue ArgumentError
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raise InvalidParameterError, "'#{param}' is not a valid #{type}"
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end
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end
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def validate!(param, options)
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options.each do |key, value|
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case key
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when :required
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raise InvalidParameterError, "Parameter is required" if value && param.nil?
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when :blank
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raise InvalidParameterError, "Parameter cannot be blank" if !value && case param
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when String
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!(/\S/ === param)
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when Array, Hash
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param.empty?
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else
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param.nil?
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end
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when :format
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raise InvalidParameterError, "Parameter must be a string if using the format validation" unless param.kind_of?(String)
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raise InvalidParameterError, "Parameter must match format #{value}" unless param =~ value
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when :is
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raise InvalidParameterError, "Parameter must be #{value}" unless param === value
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when :in, :within, :range
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raise InvalidParameterError, "Parameter must be within #{value}" unless param.nil? || case value
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when Range
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value.include?(param)
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else
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Array(value).include?(param)
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end
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when :min
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raise InvalidParameterError, "Parameter cannot be less than #{value}" unless param.nil? || value <= param
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when :max
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raise InvalidParameterError, "Parameter cannot be greater than #{value}" unless param.nil? || value >= param
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when :min_length
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raise InvalidParameterError, "Parameter cannot have length less than #{value}" unless param.nil? || value <= param.length
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when :max_length
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raise InvalidParameterError, "Parameter cannot have length greater than #{value}" unless param.nil? || value >= param.length
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end
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end
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end
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def validate_one_of!(params, names, options)
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raise InvalidParameterError, "Parameters #{names.join(', ')} are mutually exclusive" if names.count{|name| present?(params[name])} > 1
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end
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# ActiveSupport #present? and #blank? without patching Object
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def present?(object)
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!blank?(object)
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end
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def blank?(object)
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object.respond_to?(:empty?) ? object.empty? : !object
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end
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end
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helpers Param
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end