Updater: Gzip resources dejavu, refactor for CompressStreamDecoder API (#152)

* Add back uzlib

* FBT: Support different resources compress methods

* Tar: Detect gzip compress type

* Tar: Generic compressed stream refactor

* Compress: Shared config params

* Fix comment

* Compress: Scaffolding for gzip implementation

* Compress: Handle errors from allocation

* Compress: Gzip support implementation

* Tar/Compress: Don't rewind if already at stream cursor

* Update changelog

scripts/flipper/assets/tarball.py

@@ -1,4 +1,5 @@
 import io
+import gzip
 import tarfile
 
 import heatshrink2
@@ -6,7 +7,9 @@ import heatshrink2
 from .heatshrink_stream import HeatshrinkDataStreamHeader
 
 FLIPPER_TAR_FORMAT = tarfile.USTAR_FORMAT
-TAR_HEATSRINK_EXTENSION = ".ths"
+
+TAR_HEATSHRINK_EXTENSION = ".ths"
+TAR_GZIP_EXTENSION = ".tgz"
 
 
 def tar_sanitizer_filter(tarinfo: tarfile.TarInfo):
@@ -17,7 +20,12 @@ def tar_sanitizer_filter(tarinfo: tarfile.TarInfo):
 
 
 def compress_tree_tarball(
-    src_dir, output_name, filter=tar_sanitizer_filter, hs_window=13, hs_lookahead=6
+    src_dir,
+    output_name,
+    filter=tar_sanitizer_filter,
+    hs_window=13,
+    hs_lookahead=6,
+    gz_level=9,
 ):
     plain_tar = io.BytesIO()
     with tarfile.open(
@@ -27,15 +35,21 @@ def compress_tree_tarball(
     ) as tarball:
         tarball.add(src_dir, arcname="", filter=filter)
     plain_tar.seek(0)
-
     src_data = plain_tar.read()
-    compressed = heatshrink2.compress(
-        src_data, window_sz2=hs_window, lookahead_sz2=hs_lookahead
-    )
 
-    header = HeatshrinkDataStreamHeader(hs_window, hs_lookahead)
+    if output_name.endswith(TAR_HEATSHRINK_EXTENSION):
+        compressed = heatshrink2.compress(
+            src_data, window_sz2=hs_window, lookahead_sz2=hs_lookahead
+        )
+        header = HeatshrinkDataStreamHeader(hs_window, hs_lookahead)
+        compressed = header.pack() + compressed
+
+    elif output_name.endswith(TAR_GZIP_EXTENSION):
+        compressed = gzip.compress(src_data, compresslevel=gz_level, mtime=0)
+
+    else:
+        compressed = src_data
+
     with open(output_name, "wb") as f:
-        f.write(header.pack())
         f.write(compressed)
-
     return len(src_data), len(compressed)