author | jjkang |
Fri, 25 Jun 2010 19:56:45 +0800 | |
changeset 604 | b33dd54aaa52 |
parent 0 | 044383f39525 |
child 3 | e1eecf4d390d |
permissions | -rw-r--r-- |
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# The MIT License |
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# Copyright (c) 2003 Doug Tolton |
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# |
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# Permission is hereby granted, free of charge, to any person obtaining a copy |
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# of this software and associated documentation files (the "Software"), to deal |
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# in the Software without restriction, including without limitation the rights |
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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# copies of the Software, and to permit persons to whom the Software is |
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# furnished to do so, subject to the following conditions: |
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# |
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# The above copyright notice and this permission notice shall be included in |
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# all copies or substantial portions of the Software. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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# THE SOFTWARE. |
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# |
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# |
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|
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""" unzip.py |
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Version: 1.1 |
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|
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Extract a zip file to the directory provided |
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It first creates the directory structure to house the files |
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then it extracts the files to it. |
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Sample usage: |
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Windows command line |
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unzip.py -p 10 -z c:\testfile.zip -o c:\testoutput |
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|
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Linux command line |
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unzip.py -p 10 -z /tmp/testfile.zip -o /tmp/testoutput |
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Python class: |
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import unzip |
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un = unzip.unzip() |
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un.extract(r'c:\testfile.zip', r'c:\testoutput') # Windows |
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un.extract(r'/tmp/testfile.zip', '/tmp/testoutput') # Linux |
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By Doug Tolton |
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Taken from http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/252508 |
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Updated by Daniel Jacobs to be OS-neutral and more stable. |
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""" |
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import sys |
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import zipfile |
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import os |
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import os.path |
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import getopt |
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import errno |
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class unzip: |
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def __init__(self, verbose = False, percent = 10): |
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self.verbose = verbose |
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self.percent = percent |
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def extract(self, file, dir): |
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""" Extract all the files in the zip file, "file" to the directory "dir" with full path names.""" |
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if not dir.endswith(':') and not os.path.exists(dir): |
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self._makedir(dir) |
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zf = zipfile.ZipFile(file) |
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# create directory structure to house files |
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self._createstructure(file, dir) |
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num_files = len(zf.namelist()) |
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percent = self.percent |
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divisions = 100 / percent |
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perc = int(num_files / divisions) |
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# extract files to directory structure |
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for i, name in enumerate(zf.namelist()): |
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if self.verbose == True: |
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print "Extracting %s" % name |
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elif perc > 0 and (i % perc) == 0 and i > 0: |
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complete = int (i / perc) * percent |
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print "%s%% complete" % complete |
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if not name.endswith('/'): |
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# Normalise the path so that it is correct for the current OS |
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localdirname = os.path.normpath(os.path.join(dir, os.path.dirname(name))) |
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# Ensure that the directory hierarchy that contains the files exists so that |
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# writing to the file is valid. Note: some zip tools omit directory information |
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# and this will cause problems when trying to write file to non-existent directories. |
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self._makedir(localdirname) |
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# Write the file |
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outfile = open(os.path.join(localdirname, os.path.basename(name)), 'wb') |
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outfile.write(zf.read(name)) |
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outfile.flush() |
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outfile.close() |
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zf.close() |
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def _createstructure(self, file, dir): |
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self._makedirs(self._listdirs(file), dir) |
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|
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def _makedirs(self, directories, basedir): |
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""" Create any directories that don't currently exist """ |
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for dir in directories: |
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curdir = os.path.join(basedir, dir) |
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# Normalise path for current OS. |
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curdir = os.path.normpath(curdir) |
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self._makedir(curdir) |
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|
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def _makedir(self, directory): |
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""" Create a directory "safely", catching the "file exists" exception if the |
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directory has been created by another process. Creates all parent directories |
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recursively as requied. """ |
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if not os.path.exists(directory): |
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# In multi-threaded uses, it is possible that this directory |
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# has been made in the meantime. Catch this exception. |
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try: |
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os.makedirs(directory) |
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except OSError, aOSError: |
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# If the OSError is that the file exists then we are OK - this |
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# might occur in a multi-threaded or multi-process environment; |
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# otherwise re-raise the exception since it's something else bad. |
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if aOSError.errno != errno.EEXIST: |
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raise aOSError |
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133 |
|
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def _listdirs(self, file): |
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""" Grabs all the directories in the zip structure |
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This is necessary to create the structure before trying |
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to extract the file to it. """ |
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zf = zipfile.ZipFile(file) |
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139 |
|
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dirs = [] |
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141 |
|
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for name in zf.namelist(): |
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if name.endswith('/'): |
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if self.verbose == True: |
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print "Directory \"" + name + "\" will be made." |
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dirs.append(name) |
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147 |
|
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zf.close() |
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return dirs |
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150 |
|
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def usage(): |
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print """usage: unzip.py -z <zipfile> -o <targetdir> |
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<zipfile> is the source zipfile to extract |
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<targetdir> is the target destination |
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155 |
|
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-z zipfile to extract |
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-o target location |
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-p sets the percentage notification |
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-v sets the extraction to verbose (overrides -p) |
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160 |
|
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long options also work: |
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--verbose |
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--percent=10 |
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--zipfile=<zipfile> |
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--outdir=<targetdir>""" |
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166 |
|
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167 |
|
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def main(): |
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shortargs = 'vhp:z:o:' |
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longargs = ['verbose', 'help', 'percent=', 'zipfile=', 'outdir='] |
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171 |
|
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unzipper = unzip() |
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173 |
|
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try: |
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opts, args = getopt.getopt(sys.argv[1:], shortargs, longargs) |
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except getopt.GetoptError: |
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usage() |
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sys.exit(2) |
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179 |
|
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zipsource = "" |
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zipdest = "" |
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|
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for o, a in opts: |
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if o in ("-v", "--verbose"): |
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unzipper.verbose = True |
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if o in ("-p", "--percent"): |
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if not unzipper.verbose == True: |
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unzipper.percent = int(a) |
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if o in ("-z", "--zipfile"): |
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zipsource = a |
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if o in ("-o", "--outdir"): |
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zipdest = a |
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if o in ("-h", "--help"): |
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194 |
usage() |
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195 |
sys.exit() |
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196 |
|
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if zipsource == "" or zipdest == "": |
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usage() |
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199 |
sys.exit() |
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200 |
|
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201 |
unzipper.extract(zipsource, zipdest) |
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202 |
|
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203 |
if __name__ == '__main__': main() |