Allow url inputs to raster constructor

raster_tools/io.py

@@ -1,4 +1,5 @@
 import os
+import urllib
 from pathlib import Path
 
 import dask
@@ -142,16 +143,20 @@ def normalize_null_value(nv, dtype):
     return nv
 
 
-def open_raster_from_path(path):
+def open_raster_from_path_or_url(path):
     if type(path) in IO_UNDERSTOOD_TYPES:
         path = str(path)
-        path = os.path.abspath(path)
     else:
         raise RasterIOError(
-            f"Could not resolve input to a raster path: '{path}'"
+            f"Could not resolve input to a raster path or URL: '{path}'"
         )
-    validate_path(path)
-    ext = _get_extension(path)
+    if urllib.parse.urlparse(path) == "":
+        # Assume file path
+        validate_path(path)
+        ext = _get_extension(path)
+    else:
+        # URL
+        ext = ""
 
     xrs = None
     # Try to let gdal open anything but NC, HDF, GRIB files

raster_tools/raster.py

@@ -61,7 +61,7 @@
     chunk,
     is_batch_file,
     normalize_xarray_data,
-    open_raster_from_path,
+    open_raster_from_path_or_url,
     write_raster,
 )
 
@@ -568,7 +568,7 @@ def get_raster_ds(raster):
 
             ds = parse_batch_script(raster).final_raster._ds
         else:
-            rs, mask, nv = open_raster_from_path(raster)
+            rs, mask, nv = open_raster_from_path_or_url(raster)
             xmask = xr.DataArray(mask, dims=rs.dims, coords=rs.coords)
             ds = make_raster_ds(rs.rio.write_nodata(nv), xmask)
             ds = _xarray_to_raster_ds(ds)