# Module `src.onionrcommands.exportblocks`

Onionr - Private P2P Communication.

This file handles the command for exporting blocks to disk

Expand source code

    """Onionr - Private P2P Communication.

    This file handles the command for exporting blocks to disk
    """
    import sys

    import logger
    import onionrstorage
    from utils import createdirs
    from onionrutils import stringvalidators
    import filepaths
    """
        This program is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation, either version 3 of the License, or
        (at your option) any later version.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program.  If not, see <https://www.gnu.org/licenses/>.
    """

    def _do_export(b_hash):
        createdirs.create_dirs()
        data = onionrstorage.getData(b_hash)
        with open('%s/%s.dat' % (filepaths.export_location,
                                 b_hash), 'wb') as export:
            export.write(data)
            logger.info('Block exported as file', terminal=True)

    def export_block():
        """Export block based on hash from stdin or argv."""
        try:
            if not stringvalidators.validate_hash(sys.argv[2]):
                raise ValueError
        except (IndexError, ValueError):
            logger.error('No valid block hash specified.', terminal=True)
            sys.exit(1)
        else:
            b_hash = sys.argv[2]
            _do_export(b_hash)

    export_block.onionr_help = "<block hash>: Export block to "  # type: ignore
    export_block.onionr_help += "a file. Export directory is in "  # type: ignore
    export_block.onionr_help += "Onionr home under block-export"  # type: ignore

## Functions

`def export_block()`

  Export block based on hash from stdin or argv.

  Expand source code

      def export_block():
          """Export block based on hash from stdin or argv."""
          try:
              if not stringvalidators.validate_hash(sys.argv[2]):
                  raise ValueError
          except (IndexError, ValueError):
              logger.error('No valid block hash specified.', terminal=True)
              sys.exit(1)
          else:
              b_hash = sys.argv[2]
              _do_export(b_hash)