ParameterHandler extension suggetions

[secanell]

Hi all,

I would like to suggest the following three enhancement to the ParameterHandler class:

a) Extend capability of Patterns::List() from just being a comma-separated value other separators, e.g. colon-separated values. This would help to have to structures of List inside List and so on. Same thing for Patterns::Map. For example, I would like to read something like:
1:2.5;3.8 , 3:4.3;-3.8
Currently, I have to Patterns::Map(Patterns::Integer, Patterns::Anything) . It would more logical to use:
Patterns::Map(Patterns::Integer, Patterns::List(;) )

b) Extend ParameterHandler to read a directive like include file = parameters.prm

c) Create a new member function that reads a specific section of the input file. For example, we currently have virtual bool read_input (const std::string &filename, const bool optional=false, const bool write_stripped_file=false). Would it be possible to create a new member function like:
virtual bool read_input_subsection (const std::string &filename, const std::string &subsection_to_read, const bool optional=false, const bool write_stripped_file=false)
This member function would search for the subsection with name subsection_to_read and read the content of everything inside the subsection. Then, it would exit.

Would these enhancements be useful to anyone else?

Best,

Marc

[Wolfgang Bangerth]

Can you open bug reports at the google code site for each of these three
issues? This way we can track what has already been achieved.
Best
W.

On 08/21/2013 02:51 PM, secanell wrote:
>
> Hi all,
>
> I would like to suggest the following three enhancement to the
> ParameterHandler class:
>
> a) Extend capability of Patterns::List() from just being a comma-separated
> value other separators, e.g. colon-separated values. This would help to have
> to structures of List inside List and so on. Same thing for Patterns::Map. For
> example, I would like to read something like:
> 1:2.5;3.8 , 3:4.3;-3.8
> Currently, I have to Patterns::Map(Patterns::Integer, Patterns::Anything) . It
> would more logical to use:
> Patterns::Map(Patterns::Integer, Patterns::List(;) )
>
> b) Extend ParameterHandler to read a directive like include file = parameters.prm
>
> c) Create a new member function that reads a specific section of the input
> file. For example, we currently have virtual bool read_input

> <http://www.dealii.org/8.0.0/doxygen/deal.II/classParameterHandler.html#a5946f967a214445cc645027a9a13bd3e>

> (const std::string &filename, const bool optional=false, const bool
> write_stripped_file=false). Would it be possible to create a new member
> function like:
> virtual bool read_input_subsection (const std::string &filename, const
> std::string &subsection_to_read, const bool optional=false, const bool
> write_stripped_file=false)
> This member function would search for the subsection with name
> subsection_to_read and read the content of everything inside the subsection.
> Then, it would exit.
>
> Would these enhancements be useful to anyone else?
>
> Best,
>
> Marc
>

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Wolfgang Bangerth email: bang...@math.tamu.edu
www: http://www.math.tamu.edu/~bangerth/