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sysidx.m
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1999-12-24
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## Copyright (C) 1999 Auburn University. All rights reserved.
##
## This file is part of Octave.
##
## Octave is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by the
## Free Software Foundation; either version 2, or (at your option) any
## later version.
##
## Octave is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
## for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING. If not, write to the Free
## Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
##
## Written by A. S. Hodel, a.s.hodel@eng.auburn.edu
function idxvec = sysidx (sys, sigtype, signamelist)
## idxvec = sysidx(sys,sigtype,signamelist)
## return indices of signals with specified signal names
## inputs:
## sys: OCST system data structure
## sigtype: signal type to be selected: "in", "out", "st"
## signamelist: list of desired signal names
## outputs:
## idxvec: vector of signal indices (appropriate for use with sysprune)
if(nargin != 3) usage("idxvec = sysidx(sys,sigtype,signamelist)");
elseif(!is_struct(sys)) error("sys must be a system data structure");
elseif(!isstr(sigtype)) error("sigtype must be a string");
elseif(rows(sigtype) != 1)
error("sigtype (%d x %d) must be a single string", ...
rows(sigtype),columns(sigtype));
elseif(!is_siglt(signamelist))
error("signamelist must be a list of strings");
endif
sigtype_list = list("input","output","state");
sigtnum = 0;
for idx = 1:length(sigtype_list)
thistype = nth(sigtype_list,idx);
if(strcmp(sigtype, thistype(1:length(sigtype)) )) sigtnum = idx; endif
endfor
if(sigtnum == 0) error("Illegal sigtype value = %s\n",sigtype); endif
syssiglist = sysgetsg(sys,sigtype);
for idx = 1:length(signamelist)
signame = nth(signamelist,idx);
idxvec(idx) = 0;
nsigs = sysdimen(sys,sigtype);
for jdx = 1:nsigs
## printf("idx=%d jdx=%d signame=-%s- thissig=-%s-\n",idx,jdx,signame, ...
## sysgetsg(sys,sigtype,jdx,1));
if(strcmp(signame,sysgetsg(sys,sigtype,jdx,1)))
if(idxvec(idx) != 0)
warning("Duplicate system input %s (%d,%d)\n", ...
sysgetsg(sys,sigtype,jdx,1),jdx,idxvec(idx));
else
idxvec(idx) = jdx;
endif
endif
endfor
if(idxvec(idx) == 0)
error("Did not find %s %s",nth(sigtype_list,sigtnum),signame);
endif
endfor
endfunction