[registry] AVS .fld data files (#333)

src/registry.jl

@@ -1,6 +1,7 @@
 ### "Package registry"
 # Useful for packages that get used more than once below
 # Please alphabetize
+const idAVSfldIO = :AVSfldIO => UUID("b6189060-daf9-4c28-845a-cc0984b81781")
 const idCSVFiles = :CSVFiles => UUID("5d742f6a-9f54-50ce-8119-2520741973ca")
 const idImageIO = :ImageIO => UUID("82e4d734-157c-48bb-816b-45c225c6df19")
 const idImageMagick = :ImageMagick => UUID("6218d12a-5da1-5696-b52f-db25d2ecc6d1")
@@ -81,6 +82,7 @@ end
 
 add_format(format"RDataSingle", detect_rdata_single, [".rds"], [idRData, LOAD])
 
+add_format(format"AVSfld", "# AVS", [".fld"], [idAVSfldIO])
 add_format(format"CSV", (), [".csv"], [idCSVFiles])
 add_format(format"TSV", (), [".tsv"], [idCSVFiles])
 add_format(format"Feather", "FEA1", [".feather"], [:FeatherFiles => UUID("b675d258-116a-5741-b937-b79f054b0542")])

test/files/avs-ascii.dat

@@ -0,0 +1,2 @@
+1 2 3 4 5 6
+7 8 9 8 7 6

test/files/avs-ascii.fld

@@ -0,0 +1,9 @@
+# AVS field file (ascii variant)
+ndim=2
+dim1=3
+dim2=4
+nspace=2
+veclen=1
+data=int
+field=uniform
+variable 1 file=avs-ascii.dat filetype=ascii

test/query.jl

@@ -457,6 +457,12 @@ let file_dir = joinpath(@__DIR__, "files"), file_path = Path(file_dir)
                 @test position(io) == 4
             end
         end
+
+        @testset "AVSfld detection" begin
+            q = query(joinpath(file_dir, "avs-ascii.fld"))
+            @test typeof(q) <: File{format"AVSfld"}
+        end
+
     end
 
     @testset "Query from IOBuffer" begin