QGIS/resources/function_help/json/decode_uri

{
  "name": "decode_uri",
  "type": "function",
  "groups": ["Map Layers"],
  "description": "Takes a layer and decodes the uri of the underlying data provider. It depends on the dataprovider, which data is available.",
  "arguments": [ {"arg":"layer","description":"The layer for which the uri should be decoded."},
                 {"arg":"part","description":"The part of the uri to return. If unspecified, a map with all uri parts will be returned.","optional":true} ],
  "examples": [ { "expression":"decode_uri(@layer)", "returns":"{'layerId': '0', 'layerName': '', 'path': '/home/qgis/shapefile.shp'}"},
                { "expression":"decode_uri(@layer)", "returns":"{'layerId': NULL, 'layerName': 'layer', 'path': '/home/qgis/geopackage.gpkg'}"},
                { "expression":"decode_uri(@layer, 'path')", "returns":"'C:\\\\my_data\\\\qgis\\\\shape.shp'"}
              ]
}