[build/plugins/ytest] Allow prebuilt linters for opensource

Без этого, ydb или не сможет запускать flake8 с помощью ya make.
Или к ним поедет сборка flake8.
Возможно последнее и не так плохо, но сейчас предлагается пока так

3 files changed, 78 insertions, 0 deletions

diff --git a/library/python/codecs/__codecs.pyx b/library/python/codecs/__codecs.pyx
new file mode 100644
index 00000000000..42ec37fe886
--- /dev/null
+++ b/library/python/codecs/__codecs.pyx
@@ -0,0 +1,61 @@
+import six
+
+from libcpp cimport bool
+
+from util.generic.string cimport TString, TStringBuf
+
+
+def to_bytes(s):
+    try:
+        return s.encode('utf-8')
+    except AttributeError:
+        pass
+
+    return s
+
+
+def from_bytes(s):
+    if six.PY3:
+        return s.decode('utf-8')
+
+    return s
+
+
+cdef extern from "library/cpp/blockcodecs/codecs.h" namespace "NBlockCodecs":
+    cdef cppclass ICodec:
+        void Encode(TStringBuf data, TString& res) nogil
+        void Decode(TStringBuf data, TString& res) nogil
+
+    cdef const ICodec* Codec(const TStringBuf& name) except +
+    cdef TString ListAllCodecsAsString() except +
+
+
+def dumps(name, data):
+    name = to_bytes(name)
+
+    cdef const ICodec* codec = Codec(TStringBuf(name, len(name)))
+    cdef TString res
+    cdef TStringBuf cdata = TStringBuf(data, len(data))
+
+    with nogil:
+        codec.Encode(cdata, res)
+
+    return res.c_str()[:res.length()]
+
+
+def loads(name, data):
+    name = to_bytes(name)
+
+    cdef const ICodec* codec = Codec(TStringBuf(name, len(name)))
+    cdef TString res
+    cdef TStringBuf cdata = TStringBuf(data, len(data))
+
+    with nogil:
+        codec.Decode(cdata, res)
+
+    return res.c_str()[:res.length()]
+
+def list_all_codecs():
+    cdef TString res = ListAllCodecsAsString()
+
+    return from_bytes(res.c_str()[:res.length()]).split(',')
diff --git a/library/python/codecs/__init__.py b/library/python/codecs/__init__.py
new file mode 100644
index 00000000000..b9fb00deb0a
--- /dev/null
+++ b/library/python/codecs/__init__.py
@@ -0,0 +1 @@
+from __codecs import loads, dumps, list_all_codecs  # noqa
diff --git a/library/python/codecs/ya.make b/library/python/codecs/ya.make
new file mode 100644
index 00000000000..f42d115d5d1
--- /dev/null
+++ b/library/python/codecs/ya.make
@@ -0,0 +1,16 @@
+PY23_LIBRARY()
+
+PEERDIR(
+    library/cpp/blockcodecs
+    contrib/python/six
+)
+
+PY_SRCS(
+    __init__.py
+)
+
+BUILDWITH_CYTHON_CPP(__codecs.pyx)
+
+PY_REGISTER(__codecs)
+
+END()