[dm-devel] [PATCH] libdevmapper: (4/6) Add filtering feature to dm_report

[Jun'ichi Nomura]

Hi,

This patch adds a filtering feature to dm_report.

  - Add dm_report_set_filter() API.
    By calling this, dm_report_object() omits rows which doesn't
    match the condition specified by the filter.

  - Fitlers can be composed with the following components:
      * Simple comparison of field value
          '==', '!=', '>', '>=', '<', '<='
          Strings should be quoted by either ' or ".
          Only decimal, non-negative integers are currently allowed.
      * Regular expression
          '=~', '!~'
          Regular expression can be quoted by '/', '|', '#', or any
          other characters.
      * Logical combinations of the expressions
          'and', 'or', '!', '(', ')'

Thanks,
-- 
Jun'ichi Nomura, NEC Corporation of America
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