Add another fast-import example, this time for .zip files

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/contrib/fast-import/import-zips.py b/contrib/fast-import/import-zips.py
new file mode 100755 (executable)
index 0000000..c674fa2
--- /dev/null
+++ b/contrib/fast-import/import-zips.py
@@ -0,0 +1,72 @@
+#!/usr/bin/python
+
+## zip archive frontend for git-fast-import
+##
+## For example:
+##
+##  mkdir project; cd project; git init
+##  python import-zips.py *.zip
+##  git log --stat import-zips
+
+from os import popen, path
+from sys import argv, exit
+from time import mktime
+from zipfile import ZipFile
+
+if len(argv) < 2:
+       print 'Usage:', argv[0], '<zipfile>...'
+       exit(1)
+
+branch_ref = 'refs/heads/import-zips'
+committer_name = 'Z Ip Creator'
+committer_email = 'zip@example.com'
+
+fast_import = popen('git fast-import --quiet', 'w')
+def printlines(list):
+       for str in list:
+               fast_import.write(str + "\n")
+
+for zipfile in argv[1:]:
+       commit_time = 0
+       next_mark = 1
+       common_prefix = None
+       mark = dict()
+
+       zip = ZipFile(zipfile, 'r')
+       for name in zip.namelist():
+               if name.endswith('/'):
+                       continue
+               info = zip.getinfo(name)
+
+               if commit_time < info.date_time:
+                       commit_time = info.date_time
+               if common_prefix == None:
+                       common_prefix = name[:name.rfind('/') + 1]
+               else:
+                       while not name.startswith(common_prefix):
+                               common_prefix = name[:name.rfind('/') + 1]
+
+               mark[name] = ':' + str(next_mark)
+               next_mark += 1
+
+               printlines(('blob', 'mark ' + mark[name], \
+                                       'data ' + str(info.file_size)))
+               fast_import.write(zip.read(name) + "\n")
+
+       committer = committer_name + ' <' + committer_email + '> %d +0000' % \
+               mktime(commit_time + (0, 0, 0))
+
+       printlines(('commit ' + branch_ref, 'committer ' + committer, \
+               'data <<EOM', 'Imported from ' + zipfile + '.', 'EOM', \
+               '', 'deleteall'))
+
+       for name in mark.keys():
+               fast_import.write('M 100644 ' + mark[name] + ' ' +
+                       name[len(common_prefix):] + "\n")
+
+       printlines(('',  'tag ' + path.basename(zipfile), \
+               'from ' + branch_ref, 'tagger ' + committer, \
+               'data <<EOM', 'Package ' + zipfile, 'EOM', ''))
+
+if fast_import.close():
+       exit(1)