Merge pull request #38 from sam0x17/master

fix warnings for Crystal 0.35.1

src/baked_file_system.cr

@@ -1,5 +1,5 @@
 require "base64"
-require "gzip"
+require "compress/gzip"
 require "./baked_file_system/*"
 
 # A `BakedFileSystem` allows to include ("bake") static files into a compiled
@@ -49,7 +49,7 @@ module BakedFileSystem
     def initialize(@path, @size, @compressed, @slice : Bytes)
       @path = "/" + @path unless @path.starts_with? '/'
       @memory_io = IO::Memory.new(@slice)
-      @wrapped_io = compressed? ? @memory_io : Gzip::Reader.new(@memory_io)
+      @wrapped_io = compressed? ? @memory_io : Compress::Gzip::Reader.new(@memory_io)
     end
 
     def read(slice : Bytes)
@@ -63,17 +63,17 @@ module BakedFileSystem
       @slice.bytesize
     end
 
-    def write(slice : Bytes)
+    def write(slice : Bytes) : Nil
       raise "Can't write to BakedFileSystem::BakedFile"
     end
 
     def rewind
       @memory_io.rewind
-      @wrapped_io = compressed? ? @memory_io : Gzip::Reader.new(@memory_io)
+      @wrapped_io = compressed? ? @memory_io : Compress::Gzip::Reader.new(@memory_io)
     end
 
     # Returns a `Bytes` holding the (compressed) content of this virtual file.
-    # This data needs to be extracted using a `Gzip::Reader` unless `#compressed?` is true.
+    # This data needs to be extracted using a `Compress::Gzip::Reader` unless `#compressed?` is true.
     def to_slice : Bytes
       @slice
     end

src/loader/loader.cr

@@ -1,5 +1,5 @@
 require "base64"
-require "gzip"
+require "compress/gzip"
 require "./string_encoder"
 
 module BakedFileSystem
@@ -39,7 +39,7 @@ module BakedFileSystem
             if compressed
               IO.copy file, encoder
             else
-              Gzip::Writer.open(encoder) do |writer|
+              Compress::Gzip::Writer.open(encoder) do |writer|
                 IO.copy file, writer
               end
             end

src/loader/string_encoder.cr

@@ -17,7 +17,7 @@ class BakedFileSystem::StringEncoder < IO
     raise "Can't read from StringEncoder"
   end
 
-  def write(slice : Bytes)
+  def write(slice : Bytes) : Nil
     slice.each do |byte|
       case byte
       when 34_u8, 35_u8, 92_u8, 123_u8
@@ -36,7 +36,7 @@ class BakedFileSystem::StringEncoder < IO
       else
         @io << "\\x"
         @io << '0' if byte < 0x10_u8
-        byte.to_s(16, @io, upcase: true)
+        byte.to_s(@io, 16, upcase: true)
       end
     end
   end