1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <cutils/memory.h> 18 19 #if !HAVE_MEMSET16 20 void android_memset16(uint16_t* dst, uint16_t value, size_t size) 21 { 22 size >>= 1; 23 while (size--) { 24 *dst++ = value; 25 } 26 } 27 #endif 28 29 #if !HAVE_MEMSET32 30 void android_memset32(uint32_t* dst, uint32_t value, size_t size) 31 { 32 size >>= 2; 33 while (size--) { 34 *dst++ = value; 35 } 36 } 37 #endif 38 39 #if !HAVE_STRLCPY 40 /* 41 * Copyright (c) 1998 Todd C. Miller <Todd.Miller (at) courtesan.com> 42 * 43 * Permission to use, copy, modify, and distribute this software for any 44 * purpose with or without fee is hereby granted, provided that the above 45 * copyright notice and this permission notice appear in all copies. 46 * 47 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 48 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 49 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 50 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 51 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 52 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 53 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 54 */ 55 56 #include <sys/types.h> 57 #include <string.h> 58 59 /* Implementation of strlcpy() for platforms that don't already have it. */ 60 61 /* 62 * Copy src to string dst of size siz. At most siz-1 characters 63 * will be copied. Always NUL terminates (unless siz == 0). 64 * Returns strlen(src); if retval >= siz, truncation occurred. 65 */ 66 size_t 67 strlcpy(char *dst, const char *src, size_t siz) 68 { 69 char *d = dst; 70 const char *s = src; 71 size_t n = siz; 72 73 /* Copy as many bytes as will fit */ 74 if (n != 0) { 75 while (--n != 0) { 76 if ((*d++ = *s++) == '\0') 77 break; 78 } 79 } 80 81 /* Not enough room in dst, add NUL and traverse rest of src */ 82 if (n == 0) { 83 if (siz != 0) 84 *d = '\0'; /* NUL-terminate dst */ 85 while (*s++) 86 ; 87 } 88 89 return(s - src - 1); /* count does not include NUL */ 90 } 91 #endif 92
