diff options
Diffstat (limited to '')
-rw-r--r-- | src/string/strcmp.c | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/src/string/strcmp.c b/src/string/strcmp.c index bffb2ad..3099d71 100644 --- a/src/string/strcmp.c +++ b/src/string/strcmp.c @@ -16,64 +16,10 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <string.h> -#include <strings.h> -#include <stdint.h> -#include <ctype.h> /** - * Compare two memory segments alphabetically in a case sensitive manner. - * - * @param a A negative value is returned if this is the lesser. - * @param b A positive value is returned if this is the lesser. - * @param size The size of the segments. - * @return Zero is returned if `a` and `b` are equal, otherwise, - * see the specifications for `a` and `b`. - */ -int memcmp(const void* a, const void* b, size_t size) -{ - const signed char* s1 = a; - const signed char* s2 = b; - while (size--) - if (*s1 == *s2) - s1++, s2++; - else - return (int)(*s1 - *s2); - return 0; -} - - -/** - * Compare two memory segments alphabetically in a case insensitive manner. - * - * This is a slibc extension added because it was useful - * in implementing slibc itself. - * - * @param a A negative value is returned if this is the lesser. - * @param b A positive value is returned if this is the lesser. - * @param size The size of the segments. - * @return Zero is returned if `a` and `b` are equal, otherwise, - * see the specifications for `a` and `b`. - */ -int memcasecmp(const void* a, const void* b, size_t size) -{ - const signed char* s1 = a; - const signed char* s2 = b; - int c1, c2; - for (; size--; s1++, s2++) - if (*s1 != *s2) - { - c1 = isalpha(*s1) ? tolower(*s1) : (int)*s1; - c2 = isalpha(*s2) ? tolower(*s2) : (int)*s2; - if ((c1 -= c2)) - return c1; - } - return 0; -} - - -/** * Compare two strings alphabetically in a case sensitive manner. * * @param a A negative value is returned if this is the lesser. @@ -88,66 +34,3 @@ int strcmp(const char* a, const char* b) return memcmp(a, b, (n < m ? n : m) + 1); } - -/** - * Compare two strings alphabetically in a case insensitive manner. - * Be aware, only ASCII characters are case insensitive, non-ASCII - * characters are case sensitive. - * - * @param a A negative value is returned if this is the lesser. - * @param b A positive value is returned if this is the lesser. - * @return Zero is returned if `a` and `b` are equal, otherwise, - * see the specifications for `a` and `b`. - */ -int strcasecmp(const char* a, const char* b) -{ - return strncasecmp(a, b, SIZE_MAX); -} - - -/** - * Compare two strings alphabetically in a case sensitive manner. - * - * @param a A negative value is returned if this is the lesser. - * @param b A positive value is returned if this is the lesser. - * @param length The maximum number of characters to compare. - * @return Zero is returned if `a` and `b` are equal, otherwise, - * see the specifications for `a` and `b`. - */ -int strncmp(const char* a, const char* b, size_t length) -{ - size_t n = strnlen(a, length); - size_t m = strnlen(b, length); - int r = memcmp(a, b, (n < m ? n : m)); - return r ? r : n == m ? 0 : n < m ? -1 : +1; -} - - -/** - * Compare two strings alphabetically in a case insensitive manner. - * Be aware, only ASCII characters are case insensitive, non-ASCII - * characters are case sensitive. - * - * @param a A negative value is returned if this is the lesser. - * @param b A positive value is returned if this is the lesser. - * @param length The maximum number of characters to compare. - * @return Zero is returned if `a` and `b` are equal, otherwise, - * see the specifications for `a` and `b`. - */ -int strncasecmp(const char* a, const char* b, size_t length) -{ - int c1, c2; - for (; length--; a++, b++) - if (*a != *b) - { - c1 = isalpha(*a) ? tolower(*a) : (int)*a; - c2 = isalpha(*b) ? tolower(*b) : (int)*b; - if ((c1 -= c2)) - return c1; - } - else if (!*a && !*b) return 0; - else if (!*a) return -1; - else if (!*b) return +1; - return 0; -} - |