92 lines
1.9 KiB
C
92 lines
1.9 KiB
C
/*
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* Copyright (c) 1999-2000 Sendmail, Inc. and its suppliers.
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* 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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#ifndef lint
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static char id[] = "@(#)$Id: strl.c,v 8.5.14.2 2000/09/17 17:04:24 gshapiro Exp $";
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#endif /* ! lint */
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#include <sendmail.h>
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#if !HASSTRL
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/*
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** strlcpy -- copy string obeying length and '\0' terminate it
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**
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** terminates with '\0' if len > 0
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**
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** Parameters:
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** dst -- "destination" string.
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** src -- "from" string.
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** len -- length of space available in "destination" string.
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**
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** Returns:
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** total length of the string tried to create (=strlen(src))
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** if this is greater than len then an overflow would have
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** occurred.
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*/
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size_t
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strlcpy(dst, src, len)
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register char *dst;
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register const char *src;
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size_t len;
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{
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register size_t i;
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if (len-- <= 0)
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return strlen(src);
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for (i = 0; i < len && (dst[i] = src[i]) != 0; i++)
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continue;
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dst[i] = '\0';
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if (src[i] == '\0')
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return i;
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else
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return i + strlen(src + i);
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}
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/*
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** strlcat -- catenate strings obeying length and '\0' terminate it
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**
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** strlcat will append at most len - strlen(dst) - 1 chars.
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** terminates with '\0' if len > 0
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**
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** Parameters:
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** dst -- "destination" string.
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** src -- "from" string.
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** len -- max. length of "destination" string.
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**
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** Returns:
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** total length of the string tried to create
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** (= initial length of dst + length of src)
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** if this is greater than len then an overflow would have
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** occurred.
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*/
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size_t
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strlcat(dst, src, len)
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register char *dst;
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register const char *src;
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size_t len;
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{
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register size_t i, j, o;
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o = strlen(dst);
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if (len < o + 1)
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return o + strlen(src);
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len -= o + 1;
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for (i = 0, j = o; i < len && (dst[j] = src[i]) != 0; i++, j++)
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continue;
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dst[j] = '\0';
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if (src[i] == '\0')
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return j;
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else
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return j + strlen(src + i);
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}
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#endif /* !HASSTRL */
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