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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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* Replacement mktemp(3) function for systems without
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*/
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#include "copyright.h"
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#define NULL 0
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char *
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mktemp(template) /* make a unique filename from template */
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char *template;
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{
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register char *tb, *te, *p;
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int pid;
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/* find string of 6 (opt) X's */
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for (te = template; *te; te++)
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;
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while (te > template && te[-1] != 'X')
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te--;
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if (te == template)
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return(template); /* no X's! */
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for (tb = te; tb > template && tb[-1] == 'X'; tb--)
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;
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if (te-tb > 6) /* only need 6 chars */
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tb = te-6;
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pid = getpid(); /* 5 (opt) chars of pid */
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for (p = te-2; p >= tb; p--) {
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*p = pid%10 + '0';
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pid /= 10;
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}
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p = te-1; /* final character */
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for (*p = 'a'; *p <= 'z'; (*p)++)
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if (access(template, 0) == -1)
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return(template); /* found unique name */
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return(NULL); /* failure! */
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}
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