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#include <BH/String.h>
#include <ctype.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
static const char digits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
static const char lookup[] =
{
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1,
-1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1,
-1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1,
};
static void skipSpace(const char **string,
size_t *size)
{
while (isspace(**string))
{
(*string)++;
if (size) (*size)++;
}
}
static void handleSign(const char **string,
size_t *size,
int *sign)
{
*sign = 1;
if (**string == '-')
{
*sign = -1; (*string)++;
if (size) (*size)++;
}
}
static void guessBase(const char **string,
size_t *size,
int *base)
{
if (*base != 0)
return;
*base = 10;
if (**string != '0')
return;
(*string)++;
if (size)
(*size)++;
switch (**string)
{
case 'x': case 'X':
*base = 16;
(*string)++;
if (size)
(*size)++;
break;
case 'b': case 'B':
*base = 2;
(*string)++;
if (size)
(*size)++;
break;
default:
*base = 8;
}
}
#define TEMPLATE_IMPL \
char tmp[sizeof(value) * CHAR_BIT + 1]; char *current, *end, *result; \
int sign; end = tmp + sizeof(tmp); current = end; sign = 0; \
if (value < 0) { sign = 1; value = -value; } while (value) { \
*(--current) = digits[value % base]; value /= base; } \
if (sign) { *(--current) = '-'; } result = malloc(end - current + 1); \
if (!result) { return NULL; } memcpy(result, current, end - current); \
result[end - current] = 0; return result;
char *BH_StringFromInt8s(int8_t value,
int base)
{
TEMPLATE_IMPL
}
char *BH_StringFromInt16s(int16_t value,
int base)
{
TEMPLATE_IMPL
}
char *BH_StringFromInt32s(int32_t value,
int base)
{
TEMPLATE_IMPL
}
char *BH_StringFromInt64s(int64_t value,
int base)
{
TEMPLATE_IMPL
}
#undef TEMPLATE_IMPL
#define TEMPLATE_IMPL \
char tmp[sizeof(value) * CHAR_BIT]; char *current, *end, *result; \
end = tmp + sizeof(tmp); current = end; while (value) { \
*(--current) = digits[value % base]; value /= base; } \
result = malloc(end - current + 1); if (!result) { return NULL; } \
memcpy(result, current, end - current); result[end - current] = 0; \
return result;
char *BH_StringFromInt8u(uint8_t value,
int base)
{
TEMPLATE_IMPL
}
char *BH_StringFromInt16u(uint16_t value,
int base)
{
TEMPLATE_IMPL
}
char *BH_StringFromInt32u(uint32_t value,
int base)
{
TEMPLATE_IMPL
}
char *BH_StringFromInt64u(uint64_t value,
int base)
{
TEMPLATE_IMPL
}
#undef TEMPLATE_IMPL
#define TEMPLATE_IMPL(type) \
type result = 0; int sign, flag = 0; char sym; *size = 0; \
if (base != 0 && (base < 2 || base > 36)) { return 0; } \
skipSpace(&string, size); handleSign(&string, size, &sign); \
guessBase(&string, size, &base); while(*string) { sym = *(string++); \
sym = lookup[(unsigned int)sym]; if (sym >= base || sym == -1) { break; } \
if (size) { (*size)++; } result = result * base + sym; flag = 1; } \
if (!result && !flag && size) { *size = 0; } return result * sign;
int8_t BH_StringToInt8s(const char *string,
size_t *size,
int base)
{
TEMPLATE_IMPL(int8_t)
}
int16_t BH_StringToInt16s(const char *string,
size_t *size,
int base)
{
TEMPLATE_IMPL(int16_t)
}
int32_t BH_StringToInt32s(const char *string,
size_t *size,
int base)
{
TEMPLATE_IMPL(int32_t)
}
int64_t BH_StringToInt64s(const char *string,
size_t *size,
int base)
{
TEMPLATE_IMPL(int64_t)
}
uint8_t BH_StringToInt8u(const char *string,
size_t *size,
int base)
{
TEMPLATE_IMPL(uint8_t)
}
uint16_t BH_StringToInt16u(const char *string,
size_t *size,
int base)
{
TEMPLATE_IMPL(uint16_t)
}
uint32_t BH_StringToInt32u(const char *string,
size_t *size,
int base)
{
TEMPLATE_IMPL(uint32_t)
}
uint64_t BH_StringToInt64u(const char *string,
size_t *size,
int base)
{
TEMPLATE_IMPL(uint64_t)
}
#undef TEMPLATE_IMPL
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