Add ability to upload from an unbound source such as standard input o…

…r a named pipe (Backblaze#899)

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ### Added
+* Add ability to upload from an unbound source such as standard input or a named pipe
+
+### Deprecated
+* Support of `-` as a valid filename in `upload-file` command. In future `-` will be an alias for standard input.
 * Declare official support of Python 3.12
 * Cache-Control option when uploading files
 

b2/_cli/argcompleters.py

@@ -10,7 +10,7 @@
 from functools import wraps
 from itertools import islice
 
-from b2sdk.api import B2Api
+from b2sdk.v2.api import B2Api
 
 from b2._cli.b2api import _get_b2api_for_profile
 from b2._cli.const import LIST_FILE_NAMES_MAX_LIMIT

b2/_cli/b2api.py

@@ -11,10 +11,12 @@
 import os
 from typing import Optional
 
-from b2sdk.account_info.sqlite_account_info import SqliteAccountInfo
-from b2sdk.api_config import B2HttpApiConfig
-from b2sdk.cache import AuthInfoCache
-from b2sdk.v2 import B2Api
+from b2sdk.v2 import (
+    AuthInfoCache,
+    B2Api,
+    B2HttpApiConfig,
+    SqliteAccountInfo,
+)
 
 from b2._cli.const import B2_USER_AGENT_APPEND_ENV_VAR
 

b2/_cli/const.py

@@ -20,5 +20,7 @@
 B2_SOURCE_SSE_C_KEY_B64_ENV_VAR = 'B2_SOURCE_SSE_C_KEY_B64'
 
 # Constants used in the B2 API
+# TODO B2-47 move API related constants to b2sdk
 CREATE_BUCKET_TYPES = ('allPublic', 'allPrivate')
+DEFAULT_MIN_PART_SIZE = 5 * 1000 * 1000  # 5MB
 LIST_FILE_NAMES_MAX_LIMIT = 10000  # https://www.backblaze.com/b2/docs/b2_list_file_names.html

b2/_utils/__init__.py

@@ -0,0 +1,9 @@
+######################################################################
+#
+# File: b2/_utils/__init__.py
+#
+# Copyright 2023 Backblaze Inc. All Rights Reserved.
+#
+# License https://www.backblaze.com/using_b2_code.html
+#
+######################################################################

b2/_utils/filesystem.py

@@ -0,0 +1,20 @@
+######################################################################
+#
+# File: b2/_utils/filesystem.py
+#
+# Copyright 2023 Backblaze Inc. All Rights Reserved.
+#
+# License https://www.backblaze.com/using_b2_code.html
+#
+######################################################################
+import stat
+from pathlib import Path
+
+
+def points_to_fifo(path: Path) -> bool:
+    path = path.resolve()
+    try:
+
+        return stat.S_ISFIFO(path.stat().st_mode)
+    except OSError:
+        return False