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import os
import zipfile
import StringIO

from django.http import HttpResponse

def getfiles(request):
    # Files (local path) to put in the .zip
    # FIXME: Change this (get paths from DB etc)
    filenames = ["/tmp/file1.txt", "/tmp/file2.txt"]

    # Folder name in ZIP archive which contains the above files
    # E.g [thearchive.zip]/somefiles/file2.txt
    # FIXME: Set this to something better
    zip_subdir = "somefiles"
    zip_filename = "%s.zip" % zip_subdir

    # Open StringIO to grab in-memory ZIP contents
    s = StringIO.StringIO()

    # The zip compressor
    zf = zipfile.ZipFile(s, "w")

    for fpath in filenames:
        # Calculate path for file in zip
        fdir, fname = os.path.split(fpath)
        zip_path = os.path.join(zip_subdir, fname)

        # Add file, at correct path
        zf.write(fpath, zip_path)

    # Must close zip for all contents to be written
    zf.close()

    # Grab ZIP file from in-memory, make response with correct MIME-type
    resp = HttpResponse(s.getvalue(), mimetype = "application/x-zip-compressed")
    # ..and correct content-disposition
    resp['Content-Disposition'] = 'attachment; filename=%s' % zip_filename

    return resp

def backup_to_csv(request):

    output = StringIO.StringIO() ## temp output file
    writer = csv.writer(output, dialect='excel')

    #code for writing csv file go here...

    response = HttpResponse(mimetype='application/zip')
    response['Content-Disposition'] = 'attachment; filename=backup.csv.zip'

    z = zipfile.ZipFile(response,'w')   ## write zip to response
    z.writestr("filename.csv", output.getvalue())  ## write csv file to zip

    return response

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from zipfile import ZipFile
from StringIO import StringIO

inMemoryOutputFile = StringIO()

zipFile = ZipFile(inMemoryOutputFile, 'w') 
zipFile.writestr('OEBPS/content.xhtml', 'hello world')
zipFile.close()

inMemoryOutputFile.seek(0)