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Diffstat (limited to '')
-rw-r--r-- | src/string/strcpy.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/src/string/strcpy.c b/src/string/strcpy.c index 17dd339..75d88e7 100644 --- a/src/string/strcpy.c +++ b/src/string/strcpy.c @@ -32,187 +32,3 @@ char* strcpy(char* restrict whither, const char* restrict whence) return memcpy(whither, whence, strlen(whence) + 1); } - -/** - * Copy a memory segment to another, non-overlapping, segment, - * stop when a NUL byte is encountered. - * - * @param whither The destination memory segment. - * @param whence The source memory segment. - * @return `whither + strlen(whence)` is returned. - */ -char* stpcpy(char* restrict whither, const char* restrict whence) -{ - return mempcpy(whither, whence, strlen(whence) + 1) - 1; -} - - -/** - * Copy a memory segment to another, non-overlapping, segment, - * stop when a NUL byte or a specified byte is encountered. - * - * This is a slibc extension added for completeness. - * - * @param whither The destination memory segment. - * @param whence The source memory segment. - * @param c The stop byte. - * @return `NULL` if `c` was not encountered, otherwise - * the position of `c` translated to `whither`, - * that is, the address of `whither` plus the - * number of copied characters; the address of - * one character passed the last written non-NUL - * character. - */ -char* strccpy(char* restrict whither, const char* restrict whence, int c) -{ - char* r = memccpy(whither, whence, c, strlen(whence) + 1); - if (r) - *r = 0; - return r; -} - - -/** - * Copy a memory segment to another, non-overlapping, segment, - * stop when a NUL byte or a specified substring is encountered. - * - * This is a slibc extension added for completeness. - * - * @param whither The destination memory segment. - * @param whence The source memory segment. - * @param str The substring, ignored if `NULL`. - * @return `NULL` if `str` was not encountered, otherwise - * the position of `str` translated to `whither`, - * that is, the address of `whither` plus the - * number of copied characters; the address of - * one character passed the last written non-NUL - * character. - */ -char* strstrcpy(char* restrict whither, const char* restrict whence, const char* restrict str) -{ - const char* stop = str == NULL ? NULL : strstr(whence, str); - size_t n = stop == NULL ? strlen(whence) : (size_t)(stop - whence); - char* r = stop == NULL ? NULL : (whither + n); - memcpy(whither, whence, n); - whither[n] = 0; - return r; -} - - -/** - * Copy a memory segment to another, non-overlapping, segment, - * stop when a NUL byte is encountered. - * - * @param whither The destination memory segment. - * @param whence The source memory segment. - * @param maxlen The maximum number of bytes to copy. - * NOTE that if the resulting string at least this - * long, no NUL byte will be written to `whither'. - * On the otherhand, if the resultnig string is - * shorter, `whither` will be filled with NUL bytes - * until this amount of bytes have been written. - * @return `whither` is returned. - */ -char* strncpy(char* restrict whither, const char* restrict whence, size_t maxlen) -{ - size_t n = strnlen(whence, maxlen); - memcpy(whither, whence, n); - memset(whither, 0, maxlen - n); - return whither; -} - - -/** - * Copy a memory segment to another, non-overlapping, segment, - * stop when a NUL byte is encountered. - * - * This is a GNU extension. - * - * @param whither The destination memory segment. - * @param whence The source memory segment. - * @param maxlen The maximum number of bytes to copy. - * NOTE that if the resulting string at least this - * long, no NUL byte will be written to `whither'. - * On the otherhand, if the resultnig string is - * shorter, `whither` will be filled with NUL bytes - * until this amount of bytes have been written. - * @return `whither` plus the number of written bytes, - * excluding NUL bytes, is returned. - */ -char* stpncpy(char* restrict whither, const char* restrict whence, size_t maxlen) -{ - size_t n = strnlen(whence, maxlen); - memcpy(whither, whence, n); - memset(whither, 0, maxlen - n); - return whither + n; -} - - -/** - * Copy a memory segment to another, non-overlapping, segment, - * stop when a NUL byte or a specified byte is encountered. - * - * This is a slibc extension added for completeness. - * It is only available if GNU extensions are available. - * - * @param whither The destination memory segment. - * @param whence The source memory segment. - * @param c The stop byte. - * @param maxlen The maximum number of bytes to copy. - * NOTE that if the resulting string at least this - * long, no NUL byte will be written to `whither'. - * On the otherhand, if the resultnig string is - * shorter, `whither` will be filled with NUL bytes - * until this amount of bytes have been written. - * @return `NULL` if `c` was not encountered, otherwise - * the position of `c` translated to `whither`, - * that is, the address of `whither` plus the - * number of copied characters; the address of - * one character passed the last written non-NUL - * character. - */ -char* strcncpy(char* restrict whither, const char* restrict whence, int c, size_t maxlen) -{ - const char* stop = memchr(whence, c, maxlen); - size_t n = stop == NULL ? strnlen(whence, maxlen) : (size_t)(stop - whence); - char* r = stop == NULL ? NULL : (whither + n); - memcpy(whither, whence, n); - memset(whither, 0, maxlen - n); - return r; -} - - -/** - * Copy a memory segment to another, non-overlapping, segment, - * stop when a NUL byte or a specified substring is encountered. - * - * This is a slibc extension added for completeness. - * It is only available if GNU extensions are available. - * - * @param whither The destination memory segment. - * @param whence The source memory segment. - * @param str The substring, ignored if `NULL`. - * NOTE that if the resulting string at least this - * long, no NUL byte will be written to `whither'. - * On the otherhand, if the resultnig string is - * shorter, `whither` will be filled with NUL bytes - * until this amount of bytes have been written. - * @param maxlen The maximum number of bytes to copy. - * @return `NULL` if `str` was not encountered, otherwise - * the position of `str` translated to `whither`, - * that is, the address of `whither` plus the - * number of copied characters; the address of - * one character passed the last written non-NUL - * character. - */ -char* strstrncpy(char* restrict whither, const char* restrict whence, - const char* restrict str, size_t maxlen) -{ - const char* stop = strnstr(whence, str, maxlen); - size_t n = stop == NULL ? strnlen(whence, maxlen) : (size_t)(stop - whence); - char* r = stop == NULL ? NULL : (whither + n); - memcpy(whither, whence, n); - memset(whither, 0, maxlen - n); - return r; -} - |