2 files changed, 89 insertions, 0 deletions
diff --git a/python/fatcat/fcid.py b/python/fatcat/fcid.py
new file mode 100644
index 00000000..dd72b242
--- /dev/null
+++ b/python/fatcat/fcid.py
@@ -0,0 +1,17 @@
+
+import base64
+import uuid
+
+def fcid2uuid(s):
+    s = s.split('_')[-1].upper().encode('utf-8')
+    assert len(s) == 26
+    raw = base64.b32decode(s + b"======")
+    return str(uuid.UUID(bytes=raw)).lower()
+
+def uuid2fcid(s):
+    raw = uuid.UUID(s).bytes
+    return base64.b32encode(raw)[:26].lower().decode('utf-8')
+
+def test_fcid():
+    test_uuid = '00000000-0000-0000-3333-000000000001'
+    assert test_uuid == fcid2uuid(uuid2fcid(test_uuid))
diff --git a/python/fatcat_export.py b/python/fatcat_export.py
new file mode 100755
index 00000000..6c4502af
--- /dev/null
+++ b/python/fatcat_export.py
@@ -0,0 +1,72 @@
+#!/usr/bin/env python3
+
+import sys
+import json
+import argparse
+import fatcat_client
+from fatcat_client.rest import ApiException
+from fatcat.fcid import uuid2fcid
+
+def run_export_releases(args):
+    conf = fatcat_client.Configuration()
+    conf.host = args.host_url
+    api = fatcat_client.DefaultApi(fatcat_client.ApiClient(conf))
+
+    for line in args.ident_file:
+        ident = uuid2fcid(line.split()[0])
+        release = api.get_release(id=ident, expand="all")
+        args.json_output.write(json.dumps(release.to_dict()) + "\n")
+
+def run_export_changelog(args):
+    conf = fatcat_client.Configuration()
+    conf.host = args.host_url
+    api = fatcat_client.DefaultApi(fatcat_client.ApiClient(conf))
+
+    end = args.end
+    if end is None:
+        latest = api.get_changelog(limit=1)[0]
+        end = latest.index
+
+    for i in range(args.start, end):
+        entry = api.get_changelog_entry(id=i)
+        args.json_output.write(json.dumps(entry.to_dict()) + "\n")
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--debug',
+        action='store_true',
+        help="enable debugging interface")
+    parser.add_argument('--host-url',
+        default="http://localhost:9411/v0",
+        help="connect to this host/port")
+    subparsers = parser.add_subparsers()
+
+    sub_releases = subparsers.add_parser('releases')
+    sub_releases.set_defaults(func=run_export_releases)
+    sub_releases.add_argument('ident_file',
+        help="TSV list of fatcat release idents to dump",
+        default=sys.stdin, type=argparse.FileType('r'))
+    sub_releases.add_argument('json_output',
+        help="where to send output",
+        default=sys.stdout, type=argparse.FileType('w'))
+
+    sub_changelog = subparsers.add_parser('changelog')
+    sub_changelog.set_defaults(func=run_export_changelog)
+    sub_changelog.add_argument('--start',
+        help="index to start dumping at",
+        default=1, type=int)
+    sub_changelog.add_argument('--end',
+        help="index to stop dumping at (else detect most recent)",
+        default=None, type=int)
+    sub_changelog.add_argument('json_output',
+        help="where to send output",
+        default=sys.stdout, type=argparse.FileType('w'))
+
+    args = parser.parse_args()
+    if not args.__dict__.get("func"):
+        print("tell me what to do!")
+        sys.exit(-1)
+    args.func(args)
+
+if __name__ == '__main__':
+    main()