At Thursday 16/11/2006 10:48, Jim wrote:
I'm trying to read .zip files and drop from the listing those files
that are directories. I'm using the zipfile module.
Googling has increased my suspicion that
it is not just a matter of seeing if the file name ends in '/' and that
the relevant external file attribute seems to have different values for
people from different platforms, so just experimenting on my platform
doesn't seem to be a safe solution.
Ending in / appears to be enough. Filenames are stored using / in
Windows or Linux, using winzip, gzip and winrar at least.
Notice that no ordering is implied: directories may come _after_
filenames inside it.
This fragment extracts all ZipFile contents, maintaining directory structure:
--- cut ---
zf = ZipFile(zfname, 'r')
try:
# creo todos los subdirectorios que existen en el zip
# (vienen en cualquier orden)
namelist = list(zf.namelist())
namelist.sort(key=lambda n:len(n))
for fn in namelist:
if fn.endswith('/'):
fullfn = os.path.join(tmpdir, *fn[:-1].split('/'))
if not os.path.isdir(fullfn):
os.makedirs(fullfn)
# extraigo todos los archivos, respetando sus directorios
for fn in namelist:
if fn.endswith('/'):
continue
fullfn = os.path.join(tmpdir, *fn.split('/'))
ofile = open(fullfn, 'wb')
ofile.write(zf.read(fn))
ofile.close()
# mantener fecha/hora
dt = zf.getinfo(fn).date_time
ft = time.mktime((dt[0],dt[1],dt[2],dt[3],dt[4],dt[5],0,0,-1))
os.utime(fullfn, (ft,ft))
finally:
zf.close()
--- cut ---
--
Gabriel Genellina
Softlab SRL
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