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| 1 | +# |
| 2 | +# This script optimizes a Python source distribution tarball as produced by |
| 3 | +# "python3 setup.py sdist" command for MicroPython's native package manager, |
| 4 | +# upip. Optimization includes: |
| 5 | +# * Removing metadata files not used by upip (this includes setup.py) |
| 6 | +# * Recompressing gzip archive with 4K dictionary size so it can be |
| 7 | +# installed even on low-heap targets. |
| 8 | +# |
| 9 | +import sys |
| 10 | +import os |
| 11 | +import zlib |
| 12 | +from subprocess import Popen, PIPE |
| 13 | +import glob |
| 14 | +import tarfile |
| 15 | +import re |
| 16 | +import io |
| 17 | + |
| 18 | + |
| 19 | +def gzip_4k(inf, fname): |
| 20 | + comp = zlib.compressobj(level=9, wbits=16 + 12) |
| 21 | + with open(fname + ".out", "wb") as outf: |
| 22 | + while 1: |
| 23 | + data = inf.read(1024) |
| 24 | + if not data: |
| 25 | + break |
| 26 | + outf.write(comp.compress(data)) |
| 27 | + outf.write(comp.flush()) |
| 28 | + os.rename(fname, fname + ".orig") |
| 29 | + os.rename(fname + ".out", fname) |
| 30 | + |
| 31 | + |
| 32 | +def recompress(fname): |
| 33 | + with Popen(["gzip", "-d", "-c", fname], stdout=PIPE).stdout as inf: |
| 34 | + gzip_4k(inf, fname) |
| 35 | + |
| 36 | +def find_latest(dir): |
| 37 | + res = [] |
| 38 | + for fname in glob.glob(dir + "/*.gz"): |
| 39 | + st = os.stat(fname) |
| 40 | + res.append((st.st_mtime, fname)) |
| 41 | + res.sort() |
| 42 | + latest = res[-1][1] |
| 43 | + return latest |
| 44 | + |
| 45 | + |
| 46 | +def recompress_latest(dir): |
| 47 | + latest = find_latest(dir) |
| 48 | + print(latest) |
| 49 | + recompress(latest) |
| 50 | + |
| 51 | + |
| 52 | +EXCLUDE = [r".+/setup.py"] |
| 53 | +INCLUDE = [r".+\.py", r".+\.egg-info/(PKG-INFO|requires\.txt)"] |
| 54 | + |
| 55 | + |
| 56 | +outbuf = io.BytesIO() |
| 57 | + |
| 58 | +def filter_tar(name): |
| 59 | + fin = tarfile.open(name, "r:gz") |
| 60 | + fout = tarfile.open(fileobj=outbuf, mode="w") |
| 61 | + for info in fin: |
| 62 | +# print(info) |
| 63 | + include = None |
| 64 | + for p in EXCLUDE: |
| 65 | + if re.match(p, info.name): |
| 66 | + include = False |
| 67 | + break |
| 68 | + if include is None: |
| 69 | + for p in INCLUDE: |
| 70 | + if re.match(p, info.name): |
| 71 | + include = True |
| 72 | + print("Including:", info.name) |
| 73 | + if not include: |
| 74 | + continue |
| 75 | + farch = fin.extractfile(info) |
| 76 | + fout.addfile(info, farch) |
| 77 | + fout.close() |
| 78 | + fin.close() |
| 79 | + |
| 80 | + |
| 81 | + |
| 82 | +from setuptools import Command |
| 83 | + |
| 84 | +class OptimizeUpip(Command): |
| 85 | + |
| 86 | + user_options = [] |
| 87 | + |
| 88 | + def run(self): |
| 89 | + latest = find_latest("dist") |
| 90 | + filter_tar(latest) |
| 91 | + outbuf.seek(0) |
| 92 | + gzip_4k(outbuf, latest) |
| 93 | + |
| 94 | + def initialize_options(self): |
| 95 | + pass |
| 96 | + |
| 97 | + def finalize_options(self): |
| 98 | + pass |
| 99 | + |
| 100 | + |
| 101 | +# For testing only |
| 102 | +if __name__ == "__main__": |
| 103 | +# recompress_latest(sys.argv[1]) |
| 104 | + filter_tar(sys.argv[1]) |
| 105 | + outbuf.seek(0) |
| 106 | + gzip_4k(outbuf, sys.argv[1]) |
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