61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
/*
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* Copyright (c) 1998-2001 Sendmail, Inc. and its suppliers.
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* All rights reserved.
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* Copyright (c) 1997 Eric P. Allman. All rights reserved.
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the sendmail distribution.
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*
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*/
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#include <sendmail.h>
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SM_RCSID("@(#)$Id: snprintf.c,v 8.44 2001/09/11 04:04:56 gshapiro Exp $")
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/*
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** SHORTENSTRING -- return short version of a string
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**
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** If the string is already short, just return it. If it is too
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** long, return the head and tail of the string.
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**
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** Parameters:
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** s -- the string to shorten.
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** m -- the max length of the string (strlen()).
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**
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** Returns:
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** Either s or a short version of s.
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*/
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char *
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shortenstring(s, m)
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register const char *s;
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size_t m;
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{
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size_t l;
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static char buf[MAXSHORTSTR + 1];
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l = strlen(s);
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if (l < m)
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return (char *) s;
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if (m > MAXSHORTSTR)
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m = MAXSHORTSTR;
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else if (m < 10)
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{
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if (m < 5)
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{
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(void) sm_strlcpy(buf, s, m + 1);
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return buf;
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}
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(void) sm_strlcpy(buf, s, m - 2);
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(void) sm_strlcat(buf, "...", sizeof buf);
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return buf;
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}
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m = (m - 3) / 2;
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(void) sm_strlcpy(buf, s, m + 1);
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(void) sm_strlcat2(buf, "...", s + l - m, sizeof buf);
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return buf;
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}
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