1/**************************************************************************** 2 * Copyright (c) 1998-2000,2007 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29#include <curses.priv.h> 30 31MODULE_ID("$Id: memmove.c,v 1.5 2007/08/11 17:12:43 tom Exp $") 32 33/**************************************************************************** 34 * Author: Thomas E. Dickey <dickey@clark.net> 1998 * 35 ****************************************************************************/ 36 37#if USE_MY_MEMMOVE 38#define DST ((char *)s1) 39#define SRC ((const char *)s2) 40NCURSES_EXPORT(void *) 41_nc_memmove(void *s1, const void *s2, size_t n) 42{ 43 if (n != 0) { 44 if ((DST + n > SRC) && (SRC + n > DST)) { 45 static char *bfr; 46 static size_t length; 47 register size_t j; 48 if (length < n) { 49 length = (n * 3) / 2; 50 bfr = typeRealloc(char, length, bfr); 51 } 52 for (j = 0; j < n; j++) 53 bfr[j] = SRC[j]; 54 s2 = bfr; 55 } 56 while (n-- != 0) 57 DST[n] = SRC[n]; 58 } 59 return s1; 60} 61#else 62extern 63NCURSES_EXPORT(void) 64_nc_memmove(void); /* quiet's gcc warning */ 65NCURSES_EXPORT(void) 66_nc_memmove(void) 67{ 68} /* nonempty for strict ANSI compilers */ 69#endif /* USE_MY_MEMMOVE */ 70