Date: Tue, 11 Jun 2024 21:17:16 +0800
From: Dongliang Mu <dzm91@...t.edu.cn>
To: Alex Shi <alexs@...nel.org>,
	Yanteng Si <siyanteng@...ngson.cn>,
	Jonathan Corbet <corbet@....net>
Cc: hust-os-kernel-patches@...glegroups.com,
	linux-doc@...r.kernel.org,
	Dongliang Mu <dzm91@...t.edu.cn>,
	Cheng Ziqiu <chengziqiu@...t.edu.cn>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2] scripts: add scripts/checktransupdate.py

The checktransupdate.py script helps track the translation status of
the documentation in different locales, e.g., zh_CN and verify if
these documenation is up-to-date. More specially, it uses `git log`
commit to find the latest english commit from the translation commit
(order by author date) and the latest english commits from HEAD. If
differences occur, report the file and commits that need to be updated.

Signed-off-by: Dongliang Mu <dzm91@...t.edu.cn>
Signed-off-by: Cheng Ziqiu <chengziqiu@...t.edu.cn>
---
v1->v2: revise the output format of git commits
        add some description and usage of this script
 scripts/checktransupdate.py | 203 ++++++++++++++++++++++++++++++++++++
 1 file changed, 203 insertions(+)
 create mode 100755 scripts/checktransupdate.py

diff --git a/scripts/checktransupdate.py b/scripts/checktransupdate.py
new file mode 100755
index 000000000000..5a0fc99e3f93
--- /dev/null
+++ b/scripts/checktransupdate.py
@@ -0,0 +1,203 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+
+"""
+This script helps track the translation status of the documentation
+in different locales, e.g., zh_CN. More specially, it uses `git log`
+commit to find the latest english commit from the translation commit
+(order by author date) and the latest english commits from HEAD. If
+differences occur, report the file and commits that need to be updated.
+
+The usage is as follows:
+- ./scripts/checktransupdate.py -l zh_CN
+This will print all the files that need to be updated in the zh_CN locale.
+- ./scripts/checktransupdate.py Documentation/translations/zh_CN/dev-tools/testing-overview.rst
+This will only print the status of the specified file.
+
+The output is something like:
+Documentation/translations/zh_CN/dev-tools/testing-overview.rst (1 commits)
+commit 42fb9cfd5b18 ("Documentation: dev-tools: Add link to RV docs")
+"""
+
+import os
+from argparse import ArgumentParser, BooleanOptionalAction
+from datetime import datetime
+
+flag_p_c = False
+flag_p_uf = False
+flag_debug = False
+
+
+def dprint(*args, **kwargs):
+    if flag_debug:
+        print("[DEBUG] ", end="")
+        print(*args, **kwargs)
+
+
+def get_origin_path(file_path):
+    paths = file_path.split("/")
+    tidx = paths.index("translations")
+    opaths = paths[:tidx]
+    opaths += paths[tidx + 2 :]
+    return "/".join(opaths)
+
+
+def get_latest_commit_from(file_path, commit):
+    command = "git log --pretty=format:%H%n%aD%n%cD%n%n%B {} -1 -- {}".format(
+        commit, file_path
+    )
+    dprint(command)
+    pipe = os.popen(command)
+    result = pipe.read()
+    result = result.split("\n")
+    if len(result) <= 1:
+        return None
+
+    dprint("Result: {}".format(result[0]))
+
+    return {
+        "hash": result[0],
+        "author_date": datetime.strptime(result[1], "%a, %d %b %Y %H:%M:%S %z"),
+        "commit_date": datetime.strptime(result[2], "%a, %d %b %Y %H:%M:%S %z"),
+        "message": result[4:],
+    }
+
+
+def get_origin_from_trans(origin_path, t_from_head):
+    o_from_t = get_latest_commit_from(origin_path, t_from_head["hash"])
+    while o_from_t is not None and o_from_t["author_date"] > t_from_head["author_date"]:
+        o_from_t = get_latest_commit_from(origin_path, o_from_t["hash"] + "^")
+    if o_from_t is not None:
+        dprint("tracked origin commit id: {}".format(o_from_t["hash"]))
+    return o_from_t
+
+
+def get_commits_count_between(opath, commit1, commit2):
+    command = "git log --pretty=format:%H {}...{} -- {}".format(commit1, commit2, opath)
+    dprint(command)
+    pipe = os.popen(command)
+    result = pipe.read().split("\n")
+    # filter out empty lines
+    result = list(filter(lambda x: x != "", result))
+    return result
+
+
+def pretty_output(commit):
+    command = "git log --pretty='format:%h (\"%s\")' -1 {}".format(commit)
+    dprint(command)
+    pipe = os.popen(command)
+    return pipe.read()
+
+
+def check_per_file(file_path):
+    opath = get_origin_path(file_path)
+
+    if not os.path.isfile(opath):
+        dprint("Error: Cannot find the origin path for {}".format(file_path))
+        return
+
+    o_from_head = get_latest_commit_from(opath, "HEAD")
+    t_from_head = get_latest_commit_from(file_path, "HEAD")
+
+    if o_from_head is None or t_from_head is None:
+        print("Error: Cannot find the latest commit for {}".format(file_path))
+        return
+
+    o_from_t = get_origin_from_trans(opath, t_from_head)
+
+    if o_from_t is None:
+        print("Error: Cannot find the latest origin commit for {}".format(file_path))
+        return
+
+    if o_from_head["hash"] == o_from_t["hash"]:
+        if flag_p_uf:
+            print("No update needed for {}".format(file_path))
+        return
+    else:
+        print("{}".format(file_path), end="\t")
+        commits = get_commits_count_between(
+            opath, o_from_t["hash"], o_from_head["hash"]
+        )
+        print("({} commits)".format(len(commits)))
+        if flag_p_c:
+            for commit in commits:
+                msg = pretty_output(commit)
+                if "Merge tag" not in msg:
+                    print("commit", msg)
+
+
+def main():
+    script_path = os.path.dirname(os.path.abspath(__file__))
+    linux_path = os.path.join(script_path, "..")
+
+    parser = ArgumentParser(description="Check the translation update")
+    parser.add_argument(
+        "-l",
+        "--locale",
+        help="Locale to check when files are not specified",
+    )
+    parser.add_argument(
+        "--print-commits",
+        action=BooleanOptionalAction,
+        default=True,
+        help="Print commits between the origin and the translation",
+    )
+
+    parser.add_argument(
+        "--print-updated-files",
+        action=BooleanOptionalAction,
+        default=False,
+        help="Print files that do no need to be updated",
+    )
+
+    parser.add_argument(
+        "--debug",
+        action=BooleanOptionalAction,
+        help="Print debug information",
+        default=False,
+    )
+
+    parser.add_argument(
+        "files", nargs="*", help="Files to check, if not specified, check all files"
+    )
+    args = parser.parse_args()
+
+    global flag_p_c, flag_p_uf, flag_debug
+    flag_p_c = args.print_commits
+    flag_p_uf = args.print_updated_files
+    flag_debug = args.debug
+
+    # get files related to linux path
+    files = args.files
+    if len(files) == 0:
+        if args.locale is not None:
+            files = (
+                os.popen(
+                    "find {}/Documentation/translations/{} -type f".format(
+                        linux_path, args.locale
+                    )
+                )
+                .read()
+                .split("\n")
+            )
+        else:
+            files = (
+                os.popen(
+                    "find {}/Documentation/translations -type f".format(linux_path)
+                )
+                .read()
+                .split("\n")
+            )
+
+    files = list(filter(lambda x: x != "", files))
+    files = list(map(lambda x: os.path.relpath(os.path.abspath(x), linux_path), files))
+
+    # cd to linux root directory
+    os.chdir(linux_path)
+
+    for file in files:
+        check_per_file(file)
+
+
+if __name__ == "__main__":
+    main()
-- 
2.39.2

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