1 files changed, 61 insertions, 0 deletions
diff --git a/lorry.gzip-importer b/lorry.gzip-importer
new file mode 100755
index 0000000..c1c7215
--- /dev/null
+++ b/lorry.gzip-importer
@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+
+# gzip archive frontend for git-fast-import
+
+from os import popen, path
+from os.path import splitext
+from os.path import getmtime
+from sys import argv, exit, hexversion, stderr
+from gzip import GzipFile
+import struct
+
+if len(argv) < 2:
+    print 'usage:', argv[0], '<gzipfile>...'
+    exit(1)
+
+branch_name = 'master'
+branch_ref = 'refs/heads/%s' % branch_name
+committer_name = 'Lorry Gzip Importer'
+committer_email = 'lorry-gzip-importer@lorry'
+
+fast_import = popen('git fast-import --quiet', 'w')
+def printlines(list):
+    for str in list:
+        fast_import.write(str + "\n")
+
+# The size of a gzip file is stored in the last 4 bytes
+def uncompressedsize(filename):
+    with open(filename) as f:
+        f.seek(-4, 2)
+        return struct.unpack('I', f.read(4))[0]
+
+for zipfile in argv[1:]:
+
+    # Gzip does have an encoded mtime, however Python's GzipFile
+    # just ignores it, so we just yank the mtime of the zip file itself.
+    mtime = getmtime (zipfile);
+    file_size = uncompressedsize (zipfile);
+    zip = GzipFile(zipfile, 'rb')
+
+    printlines(('blob', 'mark :1', 'data ' + str(file_size)))
+    fast_import.write(zip.read() + "\n")
+
+    committer = committer_name + ' <' + committer_email + '> %d +0000' % \
+        mtime
+
+    zipfile_basename = path.basename(zipfile)
+    printlines(('commit ' + branch_ref, 'committer ' + committer, \
+        'data <<EOM', 'Imported from ' + zipfile_basename + '.', 'EOM', \
+        '', 'deleteall'))
+
+    last_dot = zipfile_basename[:-1].rfind('.')
+    unzipped_file = zipfile_basename[:last_dot]
+    fast_import.write('M 100644 :1 ' + unzipped_file + '\n');
+
+    zipname, _ = splitext(zipfile_basename)
+    printlines(('',  'tag ' + zipname, \
+        'from ' + branch_ref, 'tagger ' + committer, \
+        'data <<EOM', 'Package ' + zipfile, 'EOM', ''))
+
+if fast_import.close():
+    exit(1)