1/* flac - Command-line FLAC encoder/decoder 2 */ 3 4#if HAVE_CONFIG_H 5# include <config.h> 6#endif 7 8#include <string.h> 9 10#include "utils.h" 11#include "local_string_utils.h" 12 13/* $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $ 14 * 15 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> 16 * 17 * Permission to use, copy, modify, and distribute this software for any 18 * purpose with or without fee is hereby granted, provided that the above 19 * copyright notice and this permission notice appear in all copies. 20 * 21 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 22 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 23 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 24 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 25 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 26 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 27 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 28 * 29 * 30 * Copy src to string dst of size siz. At most siz-1 characters 31 * will be copied. Always NUL terminates (unless siz == 0). 32 * Returns strlen(src); if retval >= siz, truncation occurred. 33 */ 34size_t 35flac__strlcpy(char *dst, const char *src, size_t siz) 36{ 37 register char *d = dst; 38 register const char *s = src; 39 register size_t n = siz; 40 41 /* Copy as many bytes as will fit */ 42 if (n != 0 && --n != 0) { 43 do { 44 if ((*d++ = *s++) == 0) 45 break; 46 } while (--n != 0); 47 } 48 49 /* Not enough room in dst, add NUL and traverse rest of src */ 50 if (n == 0) { 51 if (siz != 0) 52 *d = '\0'; /* NUL-terminate dst */ 53 while (*s++) 54 ; 55 } 56 57 return(s - src - 1); /* count does not include NUL */ 58} 59 60/* $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $ 61 * 62 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> 63 * 64 * Permission to use, copy, modify, and distribute this software for any 65 * purpose with or without fee is hereby granted, provided that the above 66 * copyright notice and this permission notice appear in all copies. 67 * 68 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 69 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 70 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 71 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 72 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 73 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 74 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 75 * 76 * 77 * Appends src to string dst of size siz (unlike strncat, siz is the 78 * full size of dst, not space left). At most siz-1 characters 79 * will be copied. Always NUL terminates (unless siz <= strlen(dst)). 80 * Returns strlen(src) + MIN(siz, strlen(initial dst)). 81 * If retval >= siz, truncation occurred. 82 */ 83size_t 84flac__strlcat(char *dst, const char *src, size_t siz) 85{ 86 register char *d = dst; 87 register const char *s = src; 88 register size_t n = siz; 89 size_t dlen; 90 91 /* Find the end of dst and adjust bytes left but don't go past end */ 92 while (n-- != 0 && *d != '\0') 93 d++; 94 dlen = d - dst; 95 n = siz - dlen; 96 97 if (n == 0) 98 return(dlen + strlen(s)); 99 while (*s != '\0') { 100 if (n != 1) { 101 *d++ = *s; 102 n--; 103 } 104 s++; 105 } 106 *d = '\0'; 107 108 return(dlen + (s - src)); /* count does not include NUL */ 109} 110