D20459: [balooctl] Extend options help text, improve error checking

[Stefan Brüns]

bruns created this revision.
bruns added reviewers: Baloo, Frameworks, ngraham, astippich, poboiko.
Herald added projects: Frameworks, Baloo.
Herald added a subscriber: kde-frameworks-devel.
bruns requested review of this revision.

REVISION SUMMARY
  The "-i" option requires a valid deviceId from the "-d" option. Error
  out early if it is missing. Also mention the fact in the help text.
  
  Extend help text for the positional arguments, the files can be specified
  as Urls, document IDs or inodes (with -i).
  
  Move parsing of the -d and -i options out of the loops.

REPOSITORY
  R293 Baloo

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D20459

AFFECTED FILES
  src/tools/balooshow/main.cpp

To: bruns, #baloo, #frameworks, ngraham, astippich, poboiko
Cc: kde-frameworks-devel, gennad, domson, ashaposhnikov, michaelh, astippich, spoorun, ngraham, bruns, abrahams
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