zipfileとdifflibの使用例

ZIPファイル間で差分を作りたかったのでPythonのdifflibとzipfileを使ってみました。

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# mydiff.py 2013/4/19
import zipfile
import difflib
import os.path
import sys

def mydiff(fromarc, toarc, n=3):
    to_zip = zipfile.ZipFile(toarc)
    from_zip = zipfile.ZipFile(fromarc)

    fromto = []
    for t in to_zip.namelist():
        name,ext = os.path.splitext(t)
        s = t
        if ext == ".cpp":
            s = name + ".c"
        for f in from_zip.namelist():
            if f.endswith(s):
                fromto.append([t,f])

    for ft in fromto:
        tofile,fromfile = ft
        with to_zip.open(tofile, 'U') as f:
            tolines = f.readlines()
        with from_zip.open(fromfile, 'U') as f:
            fromlines = f.readlines()
        diff = difflib.unified_diff(fromlines, tolines, fromfile, tofile, n=n)
        sys.stdout.writelines(diff)

if __name__ == '__main__':
    fromarc = "AN11321.zip"
    toarc   = "pms-CMSIS-DAP.zip"
    mydiff(fromarc, toarc, n=3)

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(2013/4/19)
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