[ET Trac] [Einstein Toolkit] #1359: add "read from file" option ot HydroBase's initial_data options

[Einstein Toolkit]

#1359: add "read from file" option ot HydroBase's initial_data options
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  Reporter:  rhaas                  |       Owner:           
      Type:  enhancement            |      Status:  reopened 
  Priority:  minor                  |   Milestone:           
 Component:  EinsteinToolkit thorn  |     Version:           
Resolution:                         |    Keywords:  HydroBase
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Changes (by eschnett):

  * status:  closed => reopened
  * resolution:  invalid =>


Comment:

 The thorn reading the data is IOUtil. It should not know anything about
 HydroBase or ADMBase.

 Currently, it is not possible to use IOUtil's file reader with HydroBase,
 because HydroBase insists on setting up some kind of initial data, always
 overwriting what one may have read in with the file reader. This patch
 prevents this overwriting, allowing the file reader to work.

 The file reader API may not be ideal, but it is the standard in Cactus.
 HydroBase should support it.

 The proposed patch is equivalent to what ADMBase does.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1359#comment:4>
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