mirror of
https://github.com/u-boot/u-boot.git
synced 2024-12-05 18:43:27 +08:00
0b016428a7
Add simple_strtoll function for converting a string containing digits into a long long int value. Signed-off-by: Roland Gaudig <roland.gaudig@weidmueller.com> Reviewed-by: Simon Glass <sjg@chromium.org>
182 lines
3.4 KiB
C
182 lines
3.4 KiB
C
/*
|
|
* linux/lib/vsprintf.c
|
|
*
|
|
* Copyright (C) 1991, 1992 Linus Torvalds
|
|
*/
|
|
|
|
/* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
|
|
/*
|
|
* Wirzenius wrote this portably, Torvalds fucked it up :-)
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <errno.h>
|
|
#include <linux/ctype.h>
|
|
|
|
/* from lib/kstrtox.c */
|
|
static const char *_parse_integer_fixup_radix(const char *s, unsigned int *base)
|
|
{
|
|
if (*base == 0) {
|
|
if (s[0] == '0') {
|
|
if (tolower(s[1]) == 'x' && isxdigit(s[2]))
|
|
*base = 16;
|
|
else
|
|
*base = 8;
|
|
} else
|
|
*base = 10;
|
|
}
|
|
if (*base == 16 && s[0] == '0' && tolower(s[1]) == 'x')
|
|
s += 2;
|
|
return s;
|
|
}
|
|
|
|
unsigned long simple_strtoul(const char *cp, char **endp,
|
|
unsigned int base)
|
|
{
|
|
unsigned long result = 0;
|
|
unsigned long value;
|
|
|
|
cp = _parse_integer_fixup_radix(cp, &base);
|
|
|
|
while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : (islower(*cp)
|
|
? toupper(*cp) : *cp)-'A'+10) < base) {
|
|
result = result*base + value;
|
|
cp++;
|
|
}
|
|
|
|
if (endp)
|
|
*endp = (char *)cp;
|
|
|
|
return result;
|
|
}
|
|
|
|
int strict_strtoul(const char *cp, unsigned int base, unsigned long *res)
|
|
{
|
|
char *tail;
|
|
unsigned long val;
|
|
size_t len;
|
|
|
|
*res = 0;
|
|
len = strlen(cp);
|
|
if (len == 0)
|
|
return -EINVAL;
|
|
|
|
val = simple_strtoul(cp, &tail, base);
|
|
if (tail == cp)
|
|
return -EINVAL;
|
|
|
|
if ((*tail == '\0') ||
|
|
((len == (size_t)(tail - cp) + 1) && (*tail == '\n'))) {
|
|
*res = val;
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
long simple_strtol(const char *cp, char **endp, unsigned int base)
|
|
{
|
|
if (*cp == '-')
|
|
return -simple_strtoul(cp + 1, endp, base);
|
|
|
|
return simple_strtoul(cp, endp, base);
|
|
}
|
|
|
|
unsigned long ustrtoul(const char *cp, char **endp, unsigned int base)
|
|
{
|
|
unsigned long result = simple_strtoul(cp, endp, base);
|
|
switch (tolower(**endp)) {
|
|
case 'g':
|
|
result *= 1024;
|
|
/* fall through */
|
|
case 'm':
|
|
result *= 1024;
|
|
/* fall through */
|
|
case 'k':
|
|
result *= 1024;
|
|
(*endp)++;
|
|
if (**endp == 'i')
|
|
(*endp)++;
|
|
if (**endp == 'B')
|
|
(*endp)++;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
unsigned long long ustrtoull(const char *cp, char **endp, unsigned int base)
|
|
{
|
|
unsigned long long result = simple_strtoull(cp, endp, base);
|
|
switch (tolower(**endp)) {
|
|
case 'g':
|
|
result *= 1024;
|
|
/* fall through */
|
|
case 'm':
|
|
result *= 1024;
|
|
/* fall through */
|
|
case 'k':
|
|
result *= 1024;
|
|
(*endp)++;
|
|
if (**endp == 'i')
|
|
(*endp)++;
|
|
if (**endp == 'B')
|
|
(*endp)++;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
unsigned long long simple_strtoull(const char *cp, char **endp,
|
|
unsigned int base)
|
|
{
|
|
unsigned long long result = 0, value;
|
|
|
|
cp = _parse_integer_fixup_radix(cp, &base);
|
|
|
|
while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp - '0'
|
|
: (islower(*cp) ? toupper(*cp) : *cp) - 'A' + 10) < base) {
|
|
result = result * base + value;
|
|
cp++;
|
|
}
|
|
|
|
if (endp)
|
|
*endp = (char *) cp;
|
|
|
|
return result;
|
|
}
|
|
|
|
long long simple_strtoll(const char *cp, char **endp, unsigned int base)
|
|
{
|
|
if (*cp == '-')
|
|
return -simple_strtoull(cp + 1, endp, base);
|
|
|
|
return simple_strtoull(cp, endp, base);
|
|
}
|
|
|
|
long trailing_strtoln(const char *str, const char *end)
|
|
{
|
|
const char *p;
|
|
|
|
if (!end)
|
|
end = str + strlen(str);
|
|
if (isdigit(end[-1])) {
|
|
for (p = end - 1; p > str; p--) {
|
|
if (!isdigit(*p))
|
|
return simple_strtoul(p + 1, NULL, 10);
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
long trailing_strtol(const char *str)
|
|
{
|
|
return trailing_strtoln(str, NULL);
|
|
}
|
|
|
|
void str_to_upper(const char *in, char *out, size_t len)
|
|
{
|
|
for (; len > 0 && *in; len--)
|
|
*out++ = toupper(*in++);
|
|
if (len)
|
|
*out = '\0';
|
|
}
|