From bfe8fe85e86fbe01ef29cebecbcc9d646e171724 Mon Sep 17 00:00:00 2001
From: Matěj Cepl <mcepl@cepl.eu>
Date: Wed, 20 Jul 2022 14:47:24 +0200
Subject: First dummy exporter

---
 osc_fast_export.py | 84 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100755 osc_fast_export.py

diff --git a/osc_fast_export.py b/osc_fast_export.py
new file mode 100755
index 0000000..3b7c727
--- /dev/null
+++ b/osc_fast_export.py
@@ -0,0 +1,84 @@
+#!/usr/bin/python
+# https://git-scm.com/book/en/v2/Git-and-Other-Systems-Migrating-to-Git#_custom_importer
+
+import collections
+import configparser
+from datetime import datetime
+import subprocess
+
+import xml.etree.ElementTree as ET
+
+authorsfile = "authorsfile.txt"
+
+# For reading section-less config files
+# https://stackoverflow.com/a/2819788/164233
+def FakeSecHead(fp):
+    yield "[asection]\n"
+    yield from fp
+
+
+config = configparser.ConfigParser()
+config.read_file(FakeSecHead(open(authorsfile)))
+authors = dict(config.items("asection"))
+
+
+class LogEntry(
+    collections.namedtuple("LogEntry", ["rev", "md5", "author", "date", "msg"])
+):
+    def __str__(self):
+        return (
+            f"{self.rev}, {self.md5[:12]}, {authors.get(self.author, '<none>')},"
+            + f" {datetime.isoformat(self.date)}:\n{self.msg}"
+        )
+
+
+def osc_log():
+    try:
+        log_str = subprocess.run(
+            ["osc", "log", "--xml"], check=True, text=True, stdout=subprocess.PIPE
+        ).stdout
+    except subprocess.CalledProcessError:
+        raise
+    tree = ET.fromstring(log_str)
+    log_list = [
+        LogEntry(
+            int(entry.attrib["revision"]),
+            entry.attrib["srcmd5"],
+            entry.findtext("author"),
+            datetime.strptime(entry.findtext("date"), "%Y-%m-%d %H:%M:%S"),
+            entry.findtext("msg"),
+        )
+        for entry in tree.iter("logentry")
+    ]
+    log_list.reverse()
+    return log_list
+
+
+def export_data(dt):
+    return f"data {len(dt)}\n{dt}"
+
+
+def print_export(entry):
+    mark = entry.rev
+    author = authors.get(entry.author, "<none>")
+    date = int(datetime.timestamp(entry.date))
+
+    print("commit refs/heads/master")
+    print(f"mark :{mark}")
+    print(f"committer {author} {date} +0000")
+    print(export_data(entry.msg))
+    if last_mark:
+        print(f"from :{last_mark}")
+    print("deleteall")
+    print("M 644 inline tralala")
+    print(export_data("tralalala"))
+
+    return mark
+
+
+if __name__ == "__main__":
+    last_mark = None
+
+    for logentry in osc_log():
+        last_mark = print_export(logentry)
+    print("done")
-- 
cgit