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Re: "save" to and "load" from file descriptor
From: |
John W. Eaton |
Subject: |
Re: "save" to and "load" from file descriptor |
Date: |
Tue, 12 Jun 2007 18:37:44 -0400 |
On 12-Jun-2007, David Bateman wrote:
| In fact a change like that wouldn't be too difficult as the prototypes
| for octave's binary format
|
| extern bool
| save_binary_data (std::ostream& os, const octave_value& tc,
| const std::string& name, const std::string& doc,
| bool mark_as_global, bool save_as_floats);
|
| extern std::string
| read_binary_data (std::istream& is, bool swap,
| oct_mach_info::float_format fmt,
| const std::string& filename, bool& global,
| octave_value& tc, std::string& doc);
|
| would tell you. You just need a wrapper to setup the iostreams on both
| sides and then install the variables into memory on the reader's side...
| Should be relatively easy..
So how would these be used?
fid = fopen ("foo.mat", "w");
fsave (fid, "var1", "var2");
fclose (fid);
or would you pass the value itself? If you pass the value, what name
would be used in the save/load functions?
Would it be possible to write
fid = fopen ("foo.mat", "w");
fsave (fid, "var1");
fsave (fid, "var2");
fclose (fid);
What would happen on the second call to fsave? How would fsave know
to omit the header info (for example, for the MAT binary formats)?
Because of these issues, I think maybe what you want to do is use the
exported functions to write specialized functions that send and
receive data using a particular transport method rather than writing
fsend/fsave that accept file IDs.
jwe
- Re: "save" to and "load" from file descriptor, David Bateman, 2007/06/12
- Re: "save" to and "load" from file descriptor, Thomas Geiger, 2007/06/12
- Re: "save" to and "load" from file descriptor,
John W. Eaton <=
- Re: "save" to and "load" from file descriptor, Olaf Till, 2007/06/13
- Re: "save" to and "load" from file descriptor, John W. Eaton, 2007/06/13
- RE: "save" to and "load" from file descriptor, Aaron Birenboim, 2007/06/13
- Re: "save" to and "load" from file descriptor, Michael Goffioul, 2007/06/14
- Re: "save" to and "load" from file descriptor, John W. Eaton, 2007/06/14
- Re: "save" to and "load" from file descriptor, Michael Goffioul, 2007/06/14
- Re: "save" to and "load" from file descriptor, John W. Eaton, 2007/06/14
- Re: "save" to and "load" from file descriptor, Michael Goffioul, 2007/06/15
- Re: "save" to and "load" from file descriptor, Olaf Till, 2007/06/14
- Re: "save" to and "load" from file descriptor, Olaf Till, 2007/06/16