/* Copyright (c) 2000, 2011, Oracle and/or its affiliates.
Copyright ( c ) 2009 - 2011 , Monty Program Ab
Use is subject to license terms .
Copyright ( c ) 2009 - 2011 , Monty Program Ab
This program is free software ; you can redistribute it and / or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation ; version 2 of the License .
This program is distributed in the hope that it will be useful ,
but WITHOUT ANY WARRANTY ; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
GNU General Public License for more details .
You should have received a copy of the GNU General Public License
along with this program ; if not , write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
/* File : strmake.c
Author : Michael Widenius
Updated : 20 Jul 1984
Defines : strmake ( )
strmake ( dst , src , length ) moves length characters , or until end , of src to
dst and appends a closing NUL to dst .
Note that if strlen ( src ) > = length then dst [ length ] will be set to \ 0
strmake ( ) returns pointer to closing null
*/
#include "strings_def.h"
char *strmake(register char *dst, register const char *src, size_t length)
{
while (length--)
{
if (! (*dst++ = *src++))
{
#ifdef EXTRA_DEBUG
/*
' length ' is the maximum length of the string ; the buffer needs
to be one character larger to accommodate the terminating
' \ 0 ' . This is easy to get wrong , so we make sure we write to
the entire length of the buffer to identify incorrect
buffer - sizes . We only initialism the " unused " part of the
buffer here , a ) for efficiency , and b ) because dst = = src is
allowed , so initializing the entire buffer would overwrite the
source - string . Also , we write a character rather than ' \ 0 ' as
this makes spotting these problems in the results easier .
If we are using purify / valgrind , we only set one character at
end to be able to detect also wrong accesses after the end of
dst .
*/
if (length)
{
#ifdef HAVE_valgrind
dst[length-1 ]= 'Z' ;
#else
bfill(dst, length-1 , (int ) 'Z' );
#endif /* HAVE_valgrind */
}
#endif /* EXTRA_DEBUG */
return dst-1 ;
}
}
*dst=0 ;
return dst;
}
Messung V0.5 in Prozent C=93 H=84 G=88
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