[PATCH] tools/docs/checktransupdate.py: add support for scanning directory

[Haoyang LIU <tttturtleruss@gmail.com>]

Origin script can only accept a file as parameter, this commit enables
it to scan a directory.

Usage example:
./scripts/checktransupdate.py Documentation/translations/zh_CN/dev-tools

And it will output something like:
"""
[1772967203.351603] Documentation/translations/zh_CN/dev-tools/kmemleak.rst
[1772967205.074201] commit 7591c127f3b1 ("kmemleak: iommu/iova: fix transient kmemleak false positive")
[1772967205.074337] 1 commits needs resolving in total

[1772967205.301705] Documentation/translations/zh_CN/dev-tools/index.rst
[1772967206.912395] commit a592a36e4937 ("Documentation: use a source-read extension for the index link boilerplate")
[1772967206.921424] commit 6eac13c87680 ("Documentation: dev-tools: add container.rst page")
[1772967206.930220] commit 8f32441d7a53 ("Documentation: Add documentation for Compiler-Based Context Analysis")
[1772967206.939002] commit 1e9ddbb2cd34 ("docs: Pull LKMM documentation into dev-tools book")
[1772967206.948636] commit d5af79c05e93 ("Documentation: move dev-tools debugging files to process/debugging/")
[1772967206.957562] commit d5dc95836147 ("kbuild: Add Propeller configuration for kernel build")
[1772967206.966255] commit 315ad8780a12 ("kbuild: Add AutoFDO support for Clang build")
[1772967206.966410] 7 commits needs resolving in total
"""

Signed-off-by: Haoyang LIU <tttturtleruss@gmail.com>
---
 tools/docs/checktransupdate.py | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/tools/docs/checktransupdate.py b/tools/docs/checktransupdate.py
index bf735562aeeb..b0bc61f958cf 100755
--- a/tools/docs/checktransupdate.py
+++ b/tools/docs/checktransupdate.py
@@ -13,6 +13,8 @@ The usage is as follows:
 This will print all the files that need to be updated or translated in the zh_CN locale.
 - tools/docs/checktransupdate.py Documentation/translations/zh_CN/dev-tools/testing-overview.rst
 This will only print the status of the specified file.
+- tools/docs/checktransupdate.py Documentation/translations/zh_CN/dev-tools
+This will print the status of all files under the directory.
 
 The output is something like:
 Documentation/dev-tools/kfence.rst
@@ -262,7 +264,7 @@ def main():
         help='Set the logging file (default: checktransupdate.log)')
 
     parser.add_argument(
-        "files", nargs="*", help="Files to check, if not specified, check all files"
+        "files", nargs="*", help="Files or directories to check, if not specified, check all files"
     )
     args = parser.parse_args()
 
@@ -293,6 +295,17 @@ def main():
                 if args.print_missing_translations:
                     logging.info(os.path.relpath(os.path.abspath(file), linux_path))
                     logging.info("No translation in the locale of %s\n", args.locale)
+    else:
+        # check if the files are directories or files
+        new_files = []
+        for file in files:
+            if os.path.isfile(file):
+                new_files.append(file)
+            elif os.path.isdir(file):
+                # for directories, list all files in the directory and its subfolders
+                new_files.extend(list_files_with_excluding_folders(
+                    file, [], "rst"))
+        files = new_files
 
     files = list(map(lambda x: os.path.relpath(os.path.abspath(x), linux_path), files))
 
-- 
2.53.0