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緯度経度を表す多様なフォーマットを全部受け入れて任意のフォーマットで出力する試み
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require 'active_support/core_ext/hash' | |
module GeoUtils | |
extend self | |
# 様々な緯度経度フォーマットのデータを入出力する関数 | |
# 入力: 以下の5パターンの引数が想定されている | |
# lat lng FORMAT 数値二つ | |
# "lat" "lng" FORMAT 文字列二つ | |
# "lat,lng" FORMAT カンマ区切りの文字列一つ | |
# [lat,lng] FORMAT 配列 | |
# {lat,lng} FORMAT Hash。keyは、lat,latitude,lng,lon,long,longitude,x,y いずれもOK。 | |
# FORMAT 出力方法を指定 | |
# :array [lat,lng]のarrayで返す。デフォルトのフォーマット | |
# :lat_lng :lat,:lngをキーにするHash | |
# :lat_long :lat,:longをキーにするHash | |
# :lat_lon :lat,:lonをキーにするHash | |
# :x_y :x,:yをキーにするHash | |
# :latitude_longitude :latitude,:longitudeをキーにするHash | |
# :stringify_keys Hashをstringify_keysしてから返す | |
# :string "lat,lng"という具合に文字列一つで表す | |
def coordinates(*args) | |
lat,lng = [] | |
format = [:array] | |
ret = nil | |
case args[0] | |
when Float | |
# lat lng | |
lat,lng = args.shift(2) | |
when Array # [lat,lng] | |
_lat, _lng = args.shift | |
if !_lat.nil? && _lat.respond_to?(:to_f) and | |
!_lng.nil? && _lng.respond_to?(:to_f) | |
then | |
lat = _lat.to_f | |
lng = _lng.to_f | |
end | |
when String | |
if String===args[1] | |
# "lat" "lng" | |
_lat, _lng = args.shift(2) | |
if !_lat.nil? && _lat.respond_to?(:to_f) and | |
!_lng.nil? && _lng.respond_to?(:to_f) | |
then | |
lat = _lat.to_f | |
lng = _lng.to_f | |
end | |
else | |
# "lat,lng" | |
latlng = args.shift | |
if latlng=~/^([0-9. ]+),([0-9. ]+)$/ | |
lat = $1.to_f | |
lng = $2.to_f | |
end | |
end | |
when Hash | |
latlng = args.shift | |
latlng.symbolize_keys! | |
lat = latlng[:lat]||latlng[:latitude]||latlng[:x] | |
lng = latlng[:lng]||latlng[:longitude]||latlng[:long]||latlng[:lon]||latlng[:y] | |
end | |
format = [args].flatten if (args.size>0) | |
if format.include?(:array) | |
ret = [lat,lng] | |
elsif format.include?(:string) | |
ret = "#{lat},#{lng}" | |
else | |
ret = {} | |
if format.include?(:lat_lng) | |
ret[:lat] = lat | |
ret[:lng] = lng | |
end | |
if format.include?(:lat_long) | |
ret[:lat] = lat | |
ret[:long] = lng | |
end | |
if format.include?(:lat_lon) | |
ret[:lat] = lat | |
ret[:lon] = lng | |
end | |
if format.include?(:latitude_longitude) | |
ret[:latitude] = lat | |
ret[:longitude] = lng | |
end | |
if format.include?(:x_y) | |
ret[:x] = lat | |
ret[:y] = lng | |
end | |
if format.include?(:stringify_keys)||format.include?(:stringify) | |
ret.stringify_keys! | |
end | |
end | |
ret = nil if (lat.nil? || lng.nil?) | |
return ret | |
end | |
end |
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require "test-unit" | |
require "geoutils.rb" | |
class GeoUtils_test < Test::Unit::TestCase | |
def test_coordinates() | |
test1 = GeoUtils::coordinates([34.12345, 135.98765]) | |
assert_equal(34.12345, test1[0], 'in:array[float] out:none (lat)' ) | |
assert_equal(135.98765, test1[1], 'in:array[float] out:none (lng)' ) | |
test1 = GeoUtils::coordinates(["34.12345", "135.98765"]) | |
assert_equal(34.12345, test1[0], 'in:array[string] (lat)' ) | |
assert_equal(135.98765, test1[1], 'in:array[string] (lng)' ) | |
test1 = GeoUtils::coordinates("34.12345", "135.98765") | |
assert_equal(34.12345, test1[0], 'in:string,string (lat)' ) | |
assert_equal(135.98765, test1[1], 'in:string,string (lng)' ) | |
test1 = GeoUtils::coordinates(34.12345, 135.98765) | |
assert_equal(34.12345, test1[0], 'in:float,float (lat)' ) | |
assert_equal(135.98765, test1[1], 'in:float,float (lng)' ) | |
test1 = GeoUtils::coordinates( {lat:34.12345, lng:135.98765} ) | |
assert_equal(34.12345, test1[0], 'in:hash[lat_lng] (lat)' ) | |
assert_equal(135.98765, test1[1], 'in:hash[lat_lng] (lng)' ) | |
test1 = GeoUtils::coordinates( {lat:34.12345, lon:135.98765} ) | |
assert_equal(34.12345, test1[0], 'in:hash[lat_lon] (lat)' ) | |
assert_equal(135.98765, test1[1], 'in:hash[lat_lon] (lng)' ) | |
test1 = GeoUtils::coordinates( {lat:34.12345, long:135.98765} ) | |
assert_equal(34.12345, test1[0], 'in:hash[lat_long] (lat)' ) | |
assert_equal(135.98765, test1[1], 'in:hash[lat_long] (lng)' ) | |
test1 = GeoUtils::coordinates( {latitude:34.12345, longitude:135.98765} ) | |
assert_equal(34.12345, test1[0], 'in:hash[latitude_longitude] (lat)' ) | |
assert_equal(135.98765, test1[1], 'in:hash[latitude_longitude] (lng)' ) | |
test1 = GeoUtils::coordinates( {x:34.12345, y:135.98765} ) | |
assert_equal(34.12345, test1[0], 'in:hash[x_y] (lat)' ) | |
assert_equal(135.98765, test1[1], 'in:hash[x_y] (lng)' ) | |
test1 = GeoUtils::coordinates([34.12345, 135.98765],:lat_lng) | |
assert_equal(34.12345, test1[:lat], 'out(lat)' ) | |
assert_equal(135.98765, test1[:lng], 'out(lng)' ) | |
test1 = GeoUtils::coordinates([34.12345, 135.98765],[:lat_lng,:lat_long,:lat_lon,:latitude_longitude]) | |
assert_equal(34.12345, test1[:lat], 'out:lat_lng (lat)' ) | |
assert_equal(135.98765, test1[:lng], 'out:lat_lng (lng)' ) | |
assert_equal(135.98765, test1[:lon], 'out:lat_long (lng)' ) | |
assert_equal(135.98765, test1[:long], 'out:lat_long (lng)' ) | |
assert_equal(34.12345, test1[:latitude], 'out:latitude_longitude (lat)' ) | |
assert_equal(135.98765, test1[:longitude], 'out:latitude_longitude (lng)' ) | |
test1 = GeoUtils::coordinates([34.12345, 135.98765],[:string]) | |
assert_equal("34.12345,135.98765", test1, 'out:string' ) | |
test1 = GeoUtils::coordinates([34.12345, 135.98765],:x_y) | |
assert_equal(34.12345, test1[:x], 'out:x_y (lat)' ) | |
assert_equal(135.98765, test1[:y], 'out:x_y (lng)' ) | |
test1 = GeoUtils::coordinates([34.12345, 135.98765],:latitude_longitude,:stringify_keys) | |
assert_equal(34.12345, test1['latitude'], 'out:string (lat)' ) | |
assert_equal(135.98765, test1['longitude'], 'out:string (lng)' ) | |
test1 = GeoUtils::coordinates( {lat:34.12345, lng:135.98765},[:lat_lng] ) | |
assert_equal(34.12345, test1[:lat], 'in:hash[latlong] out:lat_lng (lat)' ) | |
assert_equal(135.98765, test1[:lng], 'in:hash[latlong] out:lat_lng(lng)' ) | |
test1 = GeoUtils::coordinates(34.12345, 135.98765,:lat_lng) | |
assert_equal(34.12345, test1[:lat], 'in:float,float out:lat_lng(lat)' ) | |
assert_equal(135.98765, test1[:lng], 'in:float,float out:lat_lng(lng)' ) | |
test1 = GeoUtils::coordinates("34.12345", "135.98765",[:lat_long]) | |
assert_equal(34.12345, test1[:lat], 'in:string,string out:lat_lng(lat)' ) | |
assert_equal(135.98765, test1[:long], 'in:string,string out:lat_lng(lng)' ) | |
end | |
end |
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