Merge pull request #9 from constantinius/tci_path

Adding method to get the internal path to the TCI file.

s2reader/s2reader.py

@@ -285,6 +285,25 @@ def pvi_path(self):
         """Determine the PreView Image (PVI) path inside the SAFE pkg."""
         return _pvi_path(self)
 
+    @cached_property
+    def tci_path(self):
+        """Return the path to the granules TrueColorImage."""
+        tci_paths = [
+            path for path in self.dataset._product_metadata.xpath(
+                ".//Granule[@granuleIdentifier='%s']/IMAGE_FILE/text()"
+                % self.granule_identifier
+            ) if path.endswith('TCI')
+        ]
+        try:
+            tci_path = tci_paths[0]
+        except IndexError:
+            return None
+
+        return os.path.join(
+            self.dataset._zip_root if self.dataset.is_zip else self.dataset.path,
+            tci_path
+        ) + '.jp2'
+
     @cached_property
     def cloud_percent(self):
         """Return percentage of cloud coverage."""

tests/test_s2reader.py

@@ -80,6 +80,8 @@ def _test_attributes(test_data, safe_path):
             assert isinstance(granule.metadata_path, str)
             if granule.pvi_path:
                 assert isinstance(granule.pvi_path, str)
+            if granule.tci_path:
+                assert isinstance(granule.tci_path, str)
             assert isinstance(granule.cloud_percent, float)
             assert granule.footprint.is_valid
             assert granule.cloudmask.is_valid