[SAGA-RG] saga::file::read and saga::file::write etc.

[Hartmut Kaiser]

Hi all,

> 2. I'ld suggest to change the saga::file::read and 
> saga::file::write API functions as follows:
> 
>    saga::ssize_t read(saga::mutable_buffer, saga::ssize_t bytes = 0)
>    saga::ssize_t write(saga::const_buffer, saga::ssize_t bytes = 0)
> 
> The rationale behind this is that the buffer already contains 
> a size, which by default could be used for the operation (if 
> the 'bytes' parameter is zero). In C++ this would allow to 
> simplify the code significantly. i.e.
> 
>   saga::file f(...);
> 
>   char cb[100];
>   f.read(buffer(cb));       // read 100 char's
> 
>   std::vector<double> v(20);
>   f.read(buffer(v, 10));    // read 10 doubles
> 
> Or
> 
>   std::vector<int> vi;
>   // fill vi ...
>   f.write(buffer(vi));      // write all elements of vi

The same is true for saga::stream::read and saga::stream::write, BTW.

Regards Hartmut