/*********************************************************************** * * * This software is part of the ast package * * Copyright (c) 1985-2008 AT&T Intellectual Property * * and is licensed under the * * Common Public License, Version 1.0 * * by AT&T Intellectual Property * * * * 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 * * David Korn * * Phong Vo * * * ***********************************************************************/ #pragma prototyped /* * Glenn Fowler * AT&T Bell Laboratories * * string vector argv insertion */ #include #include #include /* * 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); }