diff options
Diffstat (limited to 'sendmail/libsmutil/snprintf.c')
-rw-r--r-- | sendmail/libsmutil/snprintf.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/sendmail/libsmutil/snprintf.c b/sendmail/libsmutil/snprintf.c new file mode 100644 index 000000000000..ff3aa3b90c7c --- /dev/null +++ b/sendmail/libsmutil/snprintf.c @@ -0,0 +1,60 @@ +/* + * Copyright (c) 1998-2001 Sendmail, Inc. and its suppliers. + * All rights reserved. + * Copyright (c) 1997 Eric P. Allman. All rights reserved. + * Copyright (c) 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * By using this file, you agree to the terms and conditions set + * forth in the LICENSE file which can be found at the top level of + * the sendmail distribution. + * + */ + +#include <sendmail.h> + +SM_RCSID("@(#)$Id: snprintf.c,v 8.44 2001/09/11 04:04:56 gshapiro Exp $") + +/* +** SHORTENSTRING -- return short version of a string +** +** If the string is already short, just return it. If it is too +** long, return the head and tail of the string. +** +** Parameters: +** s -- the string to shorten. +** m -- the max length of the string (strlen()). +** +** Returns: +** Either s or a short version of s. +*/ + +char * +shortenstring(s, m) + register const char *s; + size_t m; +{ + size_t l; + static char buf[MAXSHORTSTR + 1]; + + l = strlen(s); + if (l < m) + return (char *) s; + if (m > MAXSHORTSTR) + m = MAXSHORTSTR; + else if (m < 10) + { + if (m < 5) + { + (void) sm_strlcpy(buf, s, m + 1); + return buf; + } + (void) sm_strlcpy(buf, s, m - 2); + (void) sm_strlcat(buf, "...", sizeof buf); + return buf; + } + m = (m - 3) / 2; + (void) sm_strlcpy(buf, s, m + 1); + (void) sm_strlcat2(buf, "...", s + l - m, sizeof buf); + return buf; +} |