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nl_t20.c
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1998-09-16
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2KB
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69 lines
/*
* Program: DOS/TOPS-20 newline routines
*
* Author: Mark Crispin
* Networks and Distributed Computing
* Computing & Communications
* University of Washington
* Administration Building, AG-44
* Seattle, WA 98195
* Internet: MRC@CAC.Washington.EDU
*
* Date: 1 August 1988
* Last Edited: 9 October 1994
*
* Copyright 1994 by the University of Washington
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that the above copyright notice appears in all copies and that both the
* above copyright notice and this permission notice appear in supporting
* documentation, and that the name of the University of Washington not be
* used in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. This software is made available
* "as is", and
* THE UNIVERSITY OF WASHINGTON DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
* WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN
* NO EVENT SHALL THE UNIVERSITY OF WASHINGTON BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, TORT
* (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
/* Copy string with CRLF newlines
* Accepts: destination string
* pointer to size of destination string buffer
* source string
* length of source string
* Returns: length of copied string
*/
unsigned long strcrlfcpy (char **dst,unsigned long *dstl,char *src,
unsigned long srcl)
{
/* flush destination buffer if too small */
if (*dst && (srcl > *dstl)) fs_give ((void **) dst);
if (!*dst) { /* make a new buffer if needed */
*dst = (char *) fs_get ((size_t) (*dstl = srcl) + 1);
if (dstl) *dstl = srcl; /* return new buffer length to main program */
}
/* copy strings */
if (srcl) memcpy (*dst,src,(size_t) srcl);
*(*dst + srcl) = '\0'; /* tie off destination */
return srcl; /* return length */
}
/* Length of string after strcrlfcpy applied
* Accepts: source string
* Returns: length of string
*/
unsigned long strcrlflen (STRING *s)
{
return SIZE (s); /* no-brainer on DOS! */
}