Unable to generate .po files for specific .rst file

[sachin-suresh-rapyuta]

I am trying the below methods to generate the .po file for a specific .rst file, instead of the entire folder. But there seem to be no such options with what I am trying.

Try 1: Dint work
sphinx-intl update --input-file path/to/file.rst -p build/gettext -l ja

Try 1: Dint work:
sphinx-intl update -p build/gettext -l ja --source-dir path/to/source/dir path/to/file.rst

Default command which works:
sphinx-intl update -p build/gettext -l ja

[shimizukawa]

There is no way to generate a .po file for a specific .rst file.
Options for sphinx-intl can be found in --help.

$ sphinx-intl update --help
Usage: sphinx-intl update [OPTIONS]

  Update specified language's po files from pot.

  For examples:
     sphinx-intl update -l de -l ja
     sphinx-intl update -l de,ja

Options:
  -d, --locale-dir <DIR>    locale directories that allow comma separated
                            string. This option override locale_dir in conf.py
                            setting if provided. Default is empty list.
                            [default: locales]
  -p, --pot-dir <DIR>       pot files directory which is generated by sphinx.
                            Default is 'pot' directory under '--locale-dir'
                            path.  [default: _build/gettext]
  -l, --language <LANG>     Target language to update po files. Default is
                            ALL.
  -w, --line-width <WIDTH>  The maximum line width for the po files, 0 or a
                            negative number disable line wrapping  [default:
                            76]
  --help                    Show this message and exit.