1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * Copyright (c) 1998-2001 Sendmail, Inc. and its suppliers. 3*7c478bd9Sstevel@tonic-gate * All rights reserved. 4*7c478bd9Sstevel@tonic-gate * Copyright (c) 1997 Eric P. Allman. All rights reserved. 5*7c478bd9Sstevel@tonic-gate * Copyright (c) 1988, 1993 6*7c478bd9Sstevel@tonic-gate * The Regents of the University of California. All rights reserved. 7*7c478bd9Sstevel@tonic-gate * 8*7c478bd9Sstevel@tonic-gate * By using this file, you agree to the terms and conditions set 9*7c478bd9Sstevel@tonic-gate * forth in the LICENSE file which can be found at the top level of 10*7c478bd9Sstevel@tonic-gate * the sendmail distribution. 11*7c478bd9Sstevel@tonic-gate * 12*7c478bd9Sstevel@tonic-gate */ 13*7c478bd9Sstevel@tonic-gate 14*7c478bd9Sstevel@tonic-gate #include <sendmail.h> 15*7c478bd9Sstevel@tonic-gate 16*7c478bd9Sstevel@tonic-gate SM_RCSID("@(#)$Id: snprintf.c,v 8.41 2001/08/28 23:07:01 gshapiro Exp $") 17*7c478bd9Sstevel@tonic-gate 18*7c478bd9Sstevel@tonic-gate /* 19*7c478bd9Sstevel@tonic-gate ** SHORTENSTRING -- return short version of a string 20*7c478bd9Sstevel@tonic-gate ** 21*7c478bd9Sstevel@tonic-gate ** If the string is already short, just return it. If it is too 22*7c478bd9Sstevel@tonic-gate ** long, return the head and tail of the string. 23*7c478bd9Sstevel@tonic-gate ** 24*7c478bd9Sstevel@tonic-gate ** Parameters: 25*7c478bd9Sstevel@tonic-gate ** s -- the string to shorten. 26*7c478bd9Sstevel@tonic-gate ** m -- the max length of the string (strlen()). 27*7c478bd9Sstevel@tonic-gate ** 28*7c478bd9Sstevel@tonic-gate ** Returns: 29*7c478bd9Sstevel@tonic-gate ** Either s or a short version of s. 30*7c478bd9Sstevel@tonic-gate */ 31*7c478bd9Sstevel@tonic-gate 32*7c478bd9Sstevel@tonic-gate char * 33*7c478bd9Sstevel@tonic-gate shortenstring(s, m) 34*7c478bd9Sstevel@tonic-gate register const char *s; 35*7c478bd9Sstevel@tonic-gate size_t m; 36*7c478bd9Sstevel@tonic-gate { 37*7c478bd9Sstevel@tonic-gate size_t l; 38*7c478bd9Sstevel@tonic-gate static char buf[MAXSHORTSTR + 1]; 39*7c478bd9Sstevel@tonic-gate 40*7c478bd9Sstevel@tonic-gate l = strlen(s); 41*7c478bd9Sstevel@tonic-gate if (l < m) 42*7c478bd9Sstevel@tonic-gate return (char *) s; 43*7c478bd9Sstevel@tonic-gate if (m > MAXSHORTSTR) 44*7c478bd9Sstevel@tonic-gate m = MAXSHORTSTR; 45*7c478bd9Sstevel@tonic-gate else if (m < 10) 46*7c478bd9Sstevel@tonic-gate { 47*7c478bd9Sstevel@tonic-gate if (m < 5) 48*7c478bd9Sstevel@tonic-gate { 49*7c478bd9Sstevel@tonic-gate (void) sm_strlcpy(buf, s, m + 1); 50*7c478bd9Sstevel@tonic-gate return buf; 51*7c478bd9Sstevel@tonic-gate } 52*7c478bd9Sstevel@tonic-gate (void) sm_strlcpy(buf, s, m - 2); 53*7c478bd9Sstevel@tonic-gate (void) sm_strlcat(buf, "...", sizeof buf); 54*7c478bd9Sstevel@tonic-gate return buf; 55*7c478bd9Sstevel@tonic-gate } 56*7c478bd9Sstevel@tonic-gate m = (m - 3) / 2; 57*7c478bd9Sstevel@tonic-gate (void) sm_strlcpy(buf, s, m + 1); 58*7c478bd9Sstevel@tonic-gate (void) sm_strlcat2(buf, "...", s + l - m, sizeof buf); 59*7c478bd9Sstevel@tonic-gate return buf; 60*7c478bd9Sstevel@tonic-gate } 61