Re: [OctDev] strtok vs column arrays

[Paul K. <pki...@us...>]

This seems to be a request for bug-for-bug compatibility.  An m x 1 
vector of characters should be interpreted as an array of length one 
strings.  The fact that fread is returning the wrong orientation for a 
character array shouldn't require us to make an ugly interface to all 
our string functions.  I'm not going to 'fix' this, but if someone else 
feels so inclined they may.

- Paul

On May 15, 2005, at 5:24 PM, Tom Holroyd wrote:

> fread with 'char' returns a column array; eventually this got passed 
> to strtok.  In strtok, there's a
> 	skip = find(idx != 1:length(idx))
> which failed because 1) there were multiple instances of the 
> delimiter, and 2) idx is a column and the : is a row.
> For example, in matlab:
> >> s = 'abca';
> >> strtok(s, 'a')
>
> ans =
>
> bc
>
> >> strtok(s', 'a')
>
> ans =
>
> b
> c
>
> In octave:
> octave:1> s = 'abca';
> octave:2> strtok(s, 'a')
> ans = bc
> octave:3> strtok(s', 'a')
> error: mx_el_ne: nonconformant arguments (op1 is 2x1, op2 is 1x2)
>
> One way to fix this is:
> --- #strtok.m   2005-05-15 16:18:02.000000000 -0400
> +++ strtok.m    2005-05-15 16:47:53.000000000 -0400
> @@ -57,6 +57,7 @@
>        tok = str;
>        rem = "";
>      else
> +      idx = reshape(idx, [1 length(idx)]);
>        skip = find(idx != 1:length(idx)); # find first non-leading 
> delimiter
>        if isempty(skip)
>         tok = str(idx(length(idx))+1:length(str));
>
> -- 
> Dr. Tom Holroyd
> "A man of genius makes no mistakes. His errors are volitional and
> are the portals of discovery." -- James Joyce
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by Oracle Space Sweepstakes
> Want to be the first software developer in space?
> Enter now for the Oracle Space Sweepstakes!
> http://ads.osdn.com/?ad_id=7393&alloc_id=16281&op=click
> _______________________________________________
> Octave-dev mailing list
> Oct...@li...
> https://lists.sourceforge.net/lists/listinfo/octave-dev
>