Move chunker module to chunkers package

Refactor by relocating the `chunker` module under a new `chunkers` package, adjusting imports and file references accordingly.

.gitignore

@@ -6,7 +6,7 @@ dist
 src/borg/compress.c
 src/borg/crypto/low_level.c
 src/borg/item.c
-src/borg/chunker.c
+src/borg/chunkers/chunker.c
 src/borg/checksums.c
 src/borg/platform/darwin.c
 src/borg/platform/freebsd.c

scripts/make.py

@@ -542,7 +542,7 @@ class BuildMan:
 cython_sources = """
 src/borg/compress.pyx
 src/borg/crypto/low_level.pyx
-src/borg/chunker.pyx
+src/borg/chunkers/chunker.pyx
 src/borg/hashindex.pyx
 src/borg/item.pyx
 src/borg/checksums.pyx

setup.py

@@ -50,7 +50,7 @@ cflags = ["-Wall", "-Wextra", "-Wpointer-arith", "-Wno-unreachable-code-fallthro
 
 compress_source = "src/borg/compress.pyx"
 crypto_ll_source = "src/borg/crypto/low_level.pyx"
-chunker_source = "src/borg/chunker.pyx"
+chunker_source = "src/borg/chunkers/chunker.pyx"
 hashindex_source = "src/borg/hashindex.pyx"
 item_source = "src/borg/item.pyx"
 checksums_source = "src/borg/checksums.pyx"
@@ -182,7 +182,7 @@ if not on_rtd:
         Extension("borg.compress", **compress_ext_kwargs),
         Extension("borg.hashindex", [hashindex_source], extra_compile_args=cflags),
         Extension("borg.item", [item_source], extra_compile_args=cflags),
-        Extension("borg.chunker", [chunker_source], extra_compile_args=cflags, undef_macros=["NDEBUG"]),
+        Extension("borg.chunkers.chunker", [chunker_source], extra_compile_args=cflags, undef_macros=["NDEBUG"]),
         Extension("borg.checksums", **checksums_ext_kwargs),
     ]
 

src/borg/archive.py

@@ -21,7 +21,7 @@ from .logger import create_logger
 logger = create_logger()
 
 from . import xattr
-from .chunker import get_chunker, Chunk
+from .chunkers import get_chunker, Chunk
 from .cache import ChunkListEntry, build_chunkindex_from_repo, delete_chunkindex_cache
 from .crypto.key import key_factory, UnsupportedPayloadError
 from .compress import CompressionSpec

src/borg/archiver/benchmark_cmd.py

@@ -134,7 +134,7 @@ class BenchmarkMixIn:
         key_96 = os.urandom(12)
 
         import io
-        from ..chunker import get_chunker
+        from ..chunkers import get_chunker
 
         print("Chunkers =======================================================")
         size = "1GB"

src/borg/archiver/transfer_cmd.py

@@ -2,7 +2,7 @@ import argparse
 
 from ._common import with_repository, with_other_repository, Highlander
 from ..archive import Archive, cached_hash, DownloadPipeline
-from ..chunker import get_chunker
+from ..chunkers import get_chunker
 from ..compress import CompressionSpec
 from ..constants import *  # NOQA
 from ..crypto.key import uses_same_id_hash, uses_same_chunker_secret

src/borg/chunkers/__init__.py

@@ -0,0 +1 @@
+from .chunker import *  # noqa

src/borg/chunkers/chunker.pyx

@@ -12,8 +12,8 @@ from libc.stdint cimport uint8_t, uint32_t
 from libc.stdlib cimport malloc, free
 from libc.string cimport memcpy, memmove
 
-from .constants import CH_DATA, CH_ALLOC, CH_HOLE, zeros
-from .platform import safe_fadvise
+from ..constants import CH_DATA, CH_ALLOC, CH_HOLE, zeros
+from ..platform import safe_fadvise
 
 # this will be True if Python's seek implementation supports data/holes seeking.
 # this does not imply that it will actually work on the filesystem,

src/borg/helpers/checks.py

@@ -14,7 +14,8 @@ def check_python():
 
 
 def check_extension_modules():
-    from .. import platform, compress, crypto, item, chunker, hashindex
+    from .. import platform, compress, crypto, item, hashindex
+    from ..chunkers import chunker
 
     msg = """The Borg binary extension modules do not seem to be properly installed."""
     if hashindex.API_VERSION != "1.2_01":

src/borg/testsuite/archiver/extract_cmd_test.py

@@ -7,7 +7,7 @@ from unittest.mock import patch
 import pytest
 
 from ... import xattr
-from ...chunker import has_seek_hole
+from ...chunkers import has_seek_hole
 from ...constants import *  # NOQA
 from ...helpers import EXIT_WARNING, BackupPermissionError, bin_to_hex
 from ...helpers import flags_noatime, flags_normal

src/borg/testsuite/chunker_pytest_test.py

@@ -5,7 +5,16 @@ import tempfile
 import pytest
 
 from .chunker_test import cf
-from ..chunker import Chunker, ChunkerFixed, sparsemap, has_seek_hole, ChunkerFailing, FileReader, FileFMAPReader, Chunk
+from ..chunkers import (
+    Chunker,
+    ChunkerFixed,
+    sparsemap,
+    has_seek_hole,
+    ChunkerFailing,
+    FileReader,
+    FileFMAPReader,
+    Chunk,
+)
 from ..constants import *  # NOQA
 
 BS = 4096  # fs block size

src/borg/testsuite/chunker_slow_test.py

@@ -2,7 +2,7 @@ from hashlib import sha256
 from io import BytesIO
 
 from .chunker_test import cf
-from ..chunker import Chunker
+from ..chunkers import Chunker
 from ..constants import *  # NOQA
 from ..helpers import hex_to_bin
 

src/borg/testsuite/chunker_test.py

@@ -3,7 +3,7 @@
 
 from io import BytesIO
 
-from ..chunker import ChunkerFixed, Chunker, get_chunker, buzhash, buzhash_update
+from ..chunkers import ChunkerFixed, Chunker, get_chunker, buzhash, buzhash_update
 from ..constants import *  # NOQA
 from . import BaseTestCase