| 33,13 → 33,9 |
|---|
| /** @file |
| */ |
| |
| #include <string.h> |
| #include <unistd.h> |
| #include <ctype.h> |
| #include <limits.h> |
| #include <align.h> |
| #include <mem.h> |
| #include <stdlib.h> |
| #include <sys/types.h> |
| #include <malloc.h> |
| |
| /** Fill memory block with a constant value. */ |
| void *memset(void *dest, int b, size_t n) |
| 238,310 → 234,5 |
|---|
| return len; |
| } |
| |
| /** Count the number of characters in the string, not including terminating 0. |
| * |
| * @param str String. |
| * @return Number of characters in string. |
| */ |
| size_t strlen(const char *str) |
| { |
| size_t counter = 0; |
| |
| while (str[counter] != 0) |
| counter++; |
| |
| return counter; |
| } |
| |
| int strcmp(const char *a, const char *b) |
| { |
| int c = 0; |
| |
| while (a[c] && b[c] && (!(a[c] - b[c]))) |
| c++; |
| |
| return (a[c] - b[c]); |
| } |
| |
| int strncmp(const char *a, const char *b, size_t n) |
| { |
| size_t c = 0; |
| |
| while (c < n && a[c] && b[c] && (!(a[c] - b[c]))) |
| c++; |
| |
| return ( c < n ? a[c] - b[c] : 0); |
| |
| } |
| |
| int stricmp(const char *a, const char *b) |
| { |
| int c = 0; |
| |
| while (a[c] && b[c] && (!(tolower(a[c]) - tolower(b[c])))) |
| c++; |
| |
| return (tolower(a[c]) - tolower(b[c])); |
| } |
| |
| /** Return pointer to the first occurence of character c in string. |
| * |
| * @param str Scanned string. |
| * @param c Searched character (taken as one byte). |
| * @return Pointer to the matched character or NULL if it is not |
| * found in given string. |
| */ |
| char *strchr(const char *str, int c) |
| { |
| while (*str != '\0') { |
| if (*str == (char) c) |
| return (char *) str; |
| str++; |
| } |
| |
| return NULL; |
| } |
| |
| /** Return pointer to the last occurence of character c in string. |
| * |
| * @param str Scanned string. |
| * @param c Searched character (taken as one byte). |
| * @return Pointer to the matched character or NULL if it is not |
| * found in given string. |
| */ |
| char *strrchr(const char *str, int c) |
| { |
| char *retval = NULL; |
| |
| while (*str != '\0') { |
| if (*str == (char) c) |
| retval = (char *) str; |
| str++; |
| } |
| |
| return (char *) retval; |
| } |
| |
| /** Convert string to a number. |
| * Core of strtol and strtoul functions. |
| * |
| * @param nptr Pointer to string. |
| * @param endptr If not NULL, function stores here pointer to the first |
| * invalid character. |
| * @param base Zero or number between 2 and 36 inclusive. |
| * @param sgn It's set to 1 if minus found. |
| * @return Result of conversion. |
| */ |
| static unsigned long |
| _strtoul(const char *nptr, char **endptr, int base, char *sgn) |
| { |
| unsigned char c; |
| unsigned long result = 0; |
| unsigned long a, b; |
| const char *str = nptr; |
| const char *tmpptr; |
| |
| while (isspace(*str)) |
| str++; |
| |
| if (*str == '-') { |
| *sgn = 1; |
| ++str; |
| } else if (*str == '+') |
| ++str; |
| |
| if (base) { |
| if ((base == 1) || (base > 36)) { |
| /* FIXME: set errno to EINVAL */ |
| return 0; |
| } |
| if ((base == 16) && (*str == '0') && ((str[1] == 'x') || |
| (str[1] == 'X'))) { |
| str += 2; |
| } |
| } else { |
| base = 10; |
| |
| if (*str == '0') { |
| base = 8; |
| if ((str[1] == 'X') || (str[1] == 'x')) { |
| base = 16; |
| str += 2; |
| } |
| } |
| } |
| |
| tmpptr = str; |
| |
| while (*str) { |
| c = *str; |
| c = (c >= 'a' ? c - 'a' + 10 : (c >= 'A' ? c - 'A' + 10 : |
| (c <= '9' ? c - '0' : 0xff))); |
| if (c > base) { |
| break; |
| } |
| |
| a = (result & 0xff) * base + c; |
| b = (result >> 8) * base + (a >> 8); |
| |
| if (b > (ULONG_MAX >> 8)) { |
| /* overflow */ |
| /* FIXME: errno = ERANGE*/ |
| return ULONG_MAX; |
| } |
| |
| result = (b << 8) + (a & 0xff); |
| ++str; |
| } |
| |
| if (str == tmpptr) { |
| /* |
| * No number was found => first invalid character is the first |
| * character of the string. |
| */ |
| /* FIXME: set errno to EINVAL */ |
| str = nptr; |
| result = 0; |
| } |
| |
| if (endptr) |
| *endptr = (char *) str; |
| |
| if (nptr == str) { |
| /*FIXME: errno = EINVAL*/ |
| return 0; |
| } |
| |
| return result; |
| } |
| |
| /** Convert initial part of string to long int according to given base. |
| * The number may begin with an arbitrary number of whitespaces followed by |
| * optional sign (`+' or `-'). If the base is 0 or 16, the prefix `0x' may be |
| * inserted and the number will be taken as hexadecimal one. If the base is 0 |
| * and the number begin with a zero, number will be taken as octal one (as with |
| * base 8). Otherwise the base 0 is taken as decimal. |
| * |
| * @param nptr Pointer to string. |
| * @param endptr If not NULL, function stores here pointer to the first |
| * invalid character. |
| * @param base Zero or number between 2 and 36 inclusive. |
| * @return Result of conversion. |
| */ |
| long int strtol(const char *nptr, char **endptr, int base) |
| { |
| char sgn = 0; |
| unsigned long number = 0; |
| |
| number = _strtoul(nptr, endptr, base, &sgn); |
| |
| if (number > LONG_MAX) { |
| if ((sgn) && (number == (unsigned long) (LONG_MAX) + 1)) { |
| /* FIXME: set 0 to errno */ |
| return number; |
| } |
| /* FIXME: set ERANGE to errno */ |
| return (sgn ? LONG_MIN : LONG_MAX); |
| } |
| |
| return (sgn ? -number : number); |
| } |
| |
| |
| /** Convert initial part of string to unsigned long according to given base. |
| * The number may begin with an arbitrary number of whitespaces followed by |
| * optional sign (`+' or `-'). If the base is 0 or 16, the prefix `0x' may be |
| * inserted and the number will be taken as hexadecimal one. If the base is 0 |
| * and the number begin with a zero, number will be taken as octal one (as with |
| * base 8). Otherwise the base 0 is taken as decimal. |
| * |
| * @param nptr Pointer to string. |
| * @param endptr If not NULL, function stores here pointer to the first |
| * invalid character |
| * @param base Zero or number between 2 and 36 inclusive. |
| * @return Result of conversion. |
| */ |
| unsigned long strtoul(const char *nptr, char **endptr, int base) |
| { |
| char sgn = 0; |
| unsigned long number = 0; |
| |
| number = _strtoul(nptr, endptr, base, &sgn); |
| |
| return (sgn ? -number : number); |
| } |
| |
| char *strcpy(char *dest, const char *src) |
| { |
| char *orig = dest; |
| |
| while ((*(dest++) = *(src++))) |
| ; |
| return orig; |
| } |
| |
| char *strncpy(char *dest, const char *src, size_t n) |
| { |
| char *orig = dest; |
| |
| while ((*(dest++) = *(src++)) && --n) |
| ; |
| return orig; |
| } |
| |
| char *strcat(char *dest, const char *src) |
| { |
| char *orig = dest; |
| while (*dest++) |
| ; |
| --dest; |
| while ((*dest++ = *src++)) |
| ; |
| return orig; |
| } |
| |
| char * strdup(const char *s1) |
| { |
| size_t len = strlen(s1) + 1; |
| void *ret = malloc(len); |
| |
| if (ret == NULL) |
| return (char *) NULL; |
| |
| return (char *) memcpy(ret, s1, len); |
| } |
| |
| char *strtok(char *s, const char *delim) |
| { |
| static char *next; |
| |
| return strtok_r(s, delim, &next); |
| } |
| |
| char *strtok_r(char *s, const char *delim, char **next) |
| { |
| char *start, *end; |
| |
| if (s == NULL) |
| s = *next; |
| |
| /* Skip over leading delimiters. */ |
| while (*s && (strchr(delim, *s) != NULL)) ++s; |
| start = s; |
| |
| /* Skip over token characters. */ |
| while (*s && (strchr(delim, *s) == NULL)) ++s; |
| end = s; |
| *next = (*s ? s + 1 : s); |
| |
| if (start == end) { |
| return NULL; /* No more tokens. */ |
| } |
| |
| /* Overwrite delimiter with NULL terminator. */ |
| *end = '\0'; |
| return start; |
| } |
| |
| /** @} |
| */ |
| Property changes: |
|---|
| Added: svn:mergeinfo |
|---|