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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2007 AT&T Knowledge Ventures *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Knowledge Ventures *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* Glenn Fowler
* AT&T Bell Laboratories
*
* string vector argv insertion
*/
#include <ast.h>
#include <vecargs.h>
#include <ctype.h>
/*
* insert the string vector vec between
* (*argvp)[0] and (*argvp)[1], sliding (*argvp)[1] ... over
* null and blank args are deleted
*
* vecfree always called
*
* -1 returned if insertion failed
*/
int
vecargs(register char** vec, int* argcp, char*** argvp)
{
register char** argv;
register char** oargv;
char** ovec;
char* s;
int num;
if (!vec) return(-1);
if ((num = (char**)(*(vec - 1)) - vec) > 0)
{
if (!(argv = newof(0, char*, num + *argcp + 1, 0)))
{
vecfree(vec, 0);
return(-1);
}
oargv = *argvp;
*argvp = argv;
*argv++ = *oargv++;
ovec = vec;
while (s = *argv = *vec++)
{
while (isspace(*s)) s++;
if (*s) argv++;
}
vecfree(ovec, 1);
while (*argv = *oargv++) argv++;
*argcp = argv - *argvp;
}
else vecfree(vec, 0);
return(0);
}
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