Added numpy np format.

LICENSES/Unlicense.md

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+Unlicense (Public Domain)
+============================
+
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to &lt;<https://unlicense.org/>&gt;

serialization/numpy_npy/<H.npy.license

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+SPDX-FileCopyrightText: Uncopyrightable
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serialization/numpy_npy/>H.npy.license

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serialization/numpy_npy/ReadMe.md

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+<!--
+SPDX-FileCopyrightText: 2021 KOLANICH
+SPDX-License-Identifier: Unlicense
+-->
+
+## `numpy` `npy` files
+
+These are the files that can be parsed with `numpy.load`. They also contain intentionally tampered files that are never emitted by `numpy.save` because of various reasons (i.e. `|` multibyte dtypes don't make much sense, since they are not portable across machines of various endiannesses), but that match the architecture of the format and so are parsed correctly. Also, files created by `numpy.save` are a bit longer, since their header contains unneeded whitespaces. I have trimmed them.
+
+Source: Own work.
+
+Generated with [`generate.py`](./generate.py)

serialization/numpy_npy/generate.py

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+#!/usr/bin/env python3
+
+from ast import literal_eval
+from io import BytesIO
+from pathlib import Path
+from struct import Struct
+
+import numpy as np
+
+__author__ = "KOLANICH"
+__copyright__ = "Public domain"
+__license__ = "Unlicense"
+
+letters = "uif"
+sizes = (1, 2, 4, 8, 10, 12, 16, 32)
+endians = "<>|"
+lettersInsteadOfSizes = "HLQ"
+lettersInsteadOfSizes += lettersInsteadOfSizes.lower()
+lettersInsteadOfSizes += "efdg"
+
+S = Struct("<xxxxxxBB")
+
+vs = {1: Struct("H"), 2: Struct("I")}
+
+
+def genDTypes():
+	for e in endians:
+		for l in letters:
+			for s in sizes:
+				yield e + l + str(s)
+		for l in lettersInsteadOfSizes:
+			yield e + l
+
+
+def main():
+	d = None
+	for t in genDTypes():
+		f = Path(t + ".npy")
+
+		try:
+			a = np.array(range(6), dtype=t)
+		except BaseException as e:
+			pass
+		else:
+			p = 0
+			with BytesIO() as b:
+				np.save(b, a, allow_pickle=False)
+				d = b.getvalue()
+
+			preHeader = d[: S.size]
+			vMajor, vMinor = S.unpack(preHeader)
+			p += S.size
+			headerSizeStruct = vs[vMajor]
+			headerSize = headerSizeStruct.unpack(d[p : p + headerSizeStruct.size])[0]
+			p += headerSizeStruct.size
+			h = literal_eval(d[p : p + headerSize].decode("utf-8"))
+			p += headerSize
+			actualData = d[p:]
+			h["descr"] = t
+			hD = repr(h).strip().encode("utf-8")
+			res = preHeader + headerSizeStruct.pack(len(hD)) + hD + actualData
+
+			with BytesIO(res) as b:
+				aControl = np.load(b)
+
+			if not (a == aControl).all():
+				raise Exception("Modified array contents is not equal to the original array contents")
+
+			f.write_bytes(res)
+
+
+if __name__ == "__main__":
+	main()

serialization/numpy_npy/|H.npy.license

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