Arbitrary metadata not read from rasters in GDAL

[asinghvi17]

See the files in this zipfile: https://github.com/user-attachments/files/19419830/sub_leaf_type_2021.zip

using ArchGDAL
dataset = ArchGDAL.read("sub_leaf_type_2021/sub_leaf_type_2021.tif")
ArchGDAL.metadata(dataset)

yields

2-element Vector{String}:
 "AREA_OR_POINT=Area"
 "DataType=Generic"

but if I open it as a Raster

using Rasters
r1 = Raster("sub_leaf_type_2021/sub_leaf_type_2021.tif")
Rasters.metadata(r1)

yields

Metadata{Rasters.GDALsource} of Dict{String, Any} with 1 entry:
  "filepath" => "/Users/anshul/Downloads/sub_leaf_type_2021/sub_leaf_type_2021.tif"

which doesn't contain GDAL's keys...

edit: ah, this specific metadata seems to be read when constructing dims. But the general point stands, since the Rasters method is not actually checking the GDAL metadata at all...

[rafaqz]

Huh. But what does ArchGDAL.metadata call?

The first one we actually dont want/would always filter out in any case. Its encoded in the dimensions.

[asinghvi17]

https://github.com/rafaqz/Rasters.jl/blob/09a29d3936c591fee00e7a14efffa95a4a8d24f1/ext/RastersArchGDALExt/gdal_source.jl#L206-L230

we don't even read the metadata there, is the main issue...