109 lines
1.8 KiB
C
109 lines
1.8 KiB
C
#include <compat_ctype.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <fileXio_rpc.h>
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#define ULLONG_MAX UINT64_C(0xffffffffffffffff)
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char * strtok_r(char *str, const char *delim, char **nextp)
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{
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char *ret;
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if (str == NULL) {
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str = *nextp;
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}
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str += strspn(str, delim);
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if (*str == '\0') {
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return NULL;
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}
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ret = str;
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str += strcspn(str, delim);
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if (*str) {
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*str++ = '\0';
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}
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*nextp = str;
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return ret;
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}
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unsigned long long strtoull(const char * __restrict nptr, char ** __restrict endptr, int base)
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{
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const char *s;
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unsigned long long acc;
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char c;
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unsigned long long cutoff;
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int neg, any, cutlim;
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/*
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* See strtoq for comments as to the logic used.
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*/
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s = nptr;
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do {
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c = *s++;
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} while (isspace((unsigned char)c));
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if (c == '-') {
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neg = 1;
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c = *s++;
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} else {
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neg = 0;
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if (c == '+')
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c = *s++;
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}
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if ((base == 0 || base == 16) &&
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c == '0' && (*s == 'x' || *s == 'X')) {
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c = s[1];
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s += 2;
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base = 16;
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}
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if (base == 0)
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base = c == '0' ? 8 : 10;
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acc = any = 0;
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if (base < 2 || base > 36)
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goto noconv;
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cutoff = ULLONG_MAX / base;
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cutlim = ULLONG_MAX % base;
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for ( ; ; c = *s++) {
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if (c >= '0' && c <= '9')
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c -= '0';
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else if (c >= 'A' && c <= 'Z')
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c -= 'A' - 10;
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else if (c >= 'a' && c <= 'z')
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c -= 'a' - 10;
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else
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break;
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if (c >= base)
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break;
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if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
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any = -1;
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else {
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any = 1;
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acc *= base;
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acc += c;
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}
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}
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if (any < 0) {
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acc = ULLONG_MAX;
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errno = ERANGE;
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} else if (!any) {
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noconv:
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errno = EINVAL;
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} else if (neg)
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acc = -acc;
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if (endptr != NULL)
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*endptr = (char *)(any ? s - 1 : nptr);
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return (acc);
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}
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int link(const char *oldpath, const char *newpath)
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{
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return fileXioSymlink(oldpath, newpath);
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}
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