add button to exchange GPX track

1 files changed, 17 insertions, 1 deletions

diff --git a/fietsboek/convert.py b/fietsboek/convert.py
index 3c8208b..d3bfb22 100644
--- a/fietsboek/convert.py
+++ b/fietsboek/convert.py
@@ -49,4 +49,20 @@ def from_fit(data: bytes) -> GPX:
     return gpx
 
 
-__all__ = ["from_fit"]
+def smart_convert(data: bytes) -> bytes:
+    """Tries to be smart in converting the input bytes.
+
+    This function automatically applies the correct conversion if possible.
+
+    Note that this function is not guaranteed to return valid GPX bytes. In the worst case,
+    invalid bytes are simply passed through.
+
+    :param data: The input bytes.
+    :return: The converted content.
+    """
+    if len(data) > 11 and data[9:12] == b"FIT":
+        return from_fit(data).to_xml().encode("utf-8")
+    return data
+
+
+__all__ = ["from_fit", "smart_convert"]