Add stubs for methods with file acces

Trying to load a location from a file will fail because `File` is not
yet ported to windows.

scripts/generate_windows_zone_names.cr

@@ -7,7 +7,7 @@ require "xml"
 require "../src/compiler/crystal/formatter"
 
 WINDOWS_ZONE_NAMES_SOURCE = "http://unicode.org/cldr/data/common/supplemental/windowsZones.xml"
-TARGET_FILE = File.join(__DIR__, "..", "src", "crystal", "system", "win32", "zone_names.cr")
+TARGET_FILE               = File.join(__DIR__, "..", "src", "crystal", "system", "win32", "zone_names.cr")
 
 response = HTTP::Client.get(WINDOWS_ZONE_NAMES_SOURCE)
 

src/crystal/system/win32/time.cr

@@ -64,7 +64,7 @@ module Crystal::System::Time
 
     zones = [
       ::Time::Location::Zone.new(stdname, (info.bias + info.standardBias) * BIAS_TO_OFFSET_FACTOR, false),
-      ::Time::Location::Zone.new(dstname, (info.bias + info.daylightBias) * BIAS_TO_OFFSET_FACTOR, true)
+      ::Time::Location::Zone.new(dstname, (info.bias + info.daylightBias) * BIAS_TO_OFFSET_FACTOR, true),
     ]
 
     first_date = info.standardDate
@@ -127,7 +127,7 @@ module Crystal::System::Time
 
     time += (day - 1).days
 
-    return time.epoch
+    time.epoch
   end
 
   # Normalizes the names of the standard and dst zones.
@@ -155,6 +155,6 @@ module Crystal::System::Time
   # and returns the English name.
   private def self.translate_zone_name(stdname, dstname)
     # TODO: Needs implementation once there is access to the registry.
-    return nil
+    nil
   end
 end

src/time/location/loader.cr

@@ -23,6 +23,9 @@ class Time::Location
 
   # :nodoc:
   def self.load_from_dir_or_zip(name : String, source : String)
+    {% if flag?(:win32) %}
+    raise NotImplementedError.new("Time::Location.load_from_dir_or_zip")
+    {% else %}
     if source.ends_with?(".zip")
       open_file_cached(name, source) do |file|
         read_zip_file(name, file) do |io|
@@ -35,6 +38,7 @@ class Time::Location
         read_zoneinfo(name, file)
       end
     end
+    {% end %}
   end
 
   private def self.open_file_cached(name : String, path : String)
@@ -57,6 +61,9 @@ class Time::Location
 
   # :nodoc:
   def self.find_zoneinfo_file(name : String, sources : Enumerable(String))
+    {% if flag?(:win32) %}
+    raise NotImplementedError.new("Time::Location.find_zoneinfo_file")
+    {% else %}
     sources.each do |source|
       if source.ends_with?(".zip")
         return source if File.exists?(source)
@@ -65,6 +72,7 @@ class Time::Location
         return source if File.exists?(path)
       end
     end
+    {% end %}
   end
 
   # Parse "zoneinfo" time zone file.