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#ifndef lint |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Get additional command arguments from file or environment. |
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* |
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* External symbols declared in standard.h |
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*/ |
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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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*/ |
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#include "standard.h" |
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#define MAXARGEXP 512 /* maximum argument expansion */ |
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/* set the following to suit, -1 to disable */ |
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int envexpchr = '$'; /* environment expansion character */ |
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int filexpchr = '@'; /* file expansion character */ |
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int |
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expandarg(acp, avp, n) /* expand list at argument n */ |
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int *acp; |
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register char ***avp; |
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int n; |
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{ |
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int ace; |
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char *ave[MAXARGEXP]; |
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char **newav; |
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/* check argument */ |
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if (n >= *acp) |
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return(0); |
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errno = 0; |
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if ((*avp)[n][0] == filexpchr) { /* file name */ |
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ace = wordfile(ave, (*avp)[n]+1); |
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if (ace < 0) |
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return(-1); /* no such file */ |
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} else if ((*avp)[n][0] == envexpchr) { /* env. variable */ |
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ace = wordstring(ave, getenv((*avp)[n]+1)); |
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if (ace < 0) |
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return(-1); /* no such variable */ |
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} else /* regular argument */ |
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return(0); |
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/* allocate new pointer list */ |
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newav = (char **)bmalloc((*acp+ace)*sizeof(char *)); |
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if (newav == NULL) |
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return(-1); |
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/* copy preceeding arguments */ |
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bcopy((char *)*avp, (char *)newav, n*sizeof(char *)); |
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/* copy expanded argument */ |
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bcopy((char *)ave, (char *)(newav+n), ace*sizeof(char *)); |
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/* copy trailing arguments + NULL */ |
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bcopy((char *)(*avp+n+1), (char *)(newav+n+ace), (*acp-n)*sizeof(char *)); |
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/* free old list */ |
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bfree((char *)*avp, (*acp+1)*sizeof(char *)); |
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/* assign new list */ |
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*acp += ace-1; |
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*avp = newav; |
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return(1); /* return success */ |
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} |