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low-level binary Ostream output, additional stream classes

Merged low-level binary Ostream output, additional stream classes
feature-io-streams into develop
Merged Mark OLESEN requested to merge feature-io-streams into develop
  1. Oct 24, 2017
    • Mark OLESEN's avatar
      STYLE: simplify stream types · 5aa783f1
      Mark OLESEN authored 
      - reduce coding clutter, avoiding allocated pointers when possible.
  IFstream and OFstream continue to use pointers since they handle
  compressed files, other streams can do without them.
      5aa783f1
    • Mark OLESEN's avatar
      ENH: new stream output: OListStream · 204ce366
      Mark OLESEN authored 
      - an output stream to a DynamicList
      204ce366
    • Mark OLESEN's avatar
      ENH: include memory streams · c2340273
      Mark OLESEN authored 
      - these provide a similar functionality to string-streams, but operate
  on a externally provided memory buffer which can be used to reduce
  the amount of copying.

- classes were previously staged as part of the ADIOS community
  repository.
      c2340273
    • Mark OLESEN's avatar
      ENH: add reset() method to IStringStream · d388216a
      Mark OLESEN authored 
      - for convenience and symmetry with OStringStream

STYLE: void return value for stream rewind() methods

- this makes it easier to design bidirectional streams
      d388216a
    • Mark OLESEN's avatar
      ENH: additional low-level raw binary output for Ostream. · 438f4de0
      Mark OLESEN authored 
      - low-level beginRaw(), writeRaw(), endRaw() methods.
  These can be used to directly add '()' decorators for serial output
  or prepare/cleanup parallel buffers.
  Used, for example, when outputting indirect lists in binary to avoid.
      438f4de0