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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <errno.h>
uint64_t *parse_number64(const char *argv)
{
uint64_t *n = malloc(sizeof(*n));
char *endptr;
if (!argv)
return NULL;
errno = 0;
*n = strtoull(argv, &endptr, 0);
if (errno || *endptr != '\0')
return NULL;
return n;
}
uint32_t *parse_number32(const char *argv)
{
unsigned long long tmp;
uint32_t *n = malloc(sizeof(*n));
char *endptr;
if (!argv)
return NULL;
errno = 0;
tmp = strtoul(argv, &endptr, 0);
if (errno || *endptr != '\0' || tmp > UINT32_MAX)
return NULL;
*n = tmp;
return n;
}
uint16_t *parse_number16(const char *argv)
{
unsigned long long tmp;
uint16_t *n = malloc(sizeof(*n));
char *endptr;
if (!argv)
return NULL;
errno = 0;
tmp = strtoul(argv, &endptr, 0);
if (errno || *endptr != '\0' || tmp > UINT16_MAX)
return NULL;
*n = tmp;
return n;
}
/* Parse an 8-bit number that is a power of 2 */
uint8_t *parse_number8_pow2(const char *argv)
{
uint8_t *n;
unsigned long int tmp, i;
char *endptr;
if (!argv)
return NULL;
errno = 0;
tmp = strtoul(argv, &endptr, 0);
if (tmp >= 256)
return NULL;
for (i = tmp; i; i >>= 1)
if ((i & 1) && (i >> 1))
return NULL;
n = malloc(sizeof(*n));
*n = tmp;
return n;
}
/* Parse a GPR number, returning an error if it's greater than 32 */
int *parse_gpr(const char *argv)
{
int *gpr = malloc(sizeof(*gpr));
char *endptr;
if (!argv)
return NULL;
errno = 0;
*gpr = strtoul(argv, &endptr, 0);
if (errno || *endptr != '\0' || *gpr > 32)
return NULL;
return gpr;
}
/* Parse an SPR. Currently only supports SPR by numbers but could be extended to
* support names (eg. lr) */
int *parse_spr(const char *argv)
{
int *spr = malloc(sizeof(*spr));
char *endptr;
if (!argv)
return NULL;
errno = 0;
*spr = strtoul(argv, &endptr, 0);
if (errno || *endptr != '\0' || *spr > 0x3ff)
return NULL;
return spr;
}
/* A special parser that always returns true. Allows for boolean flags which
* don't take arguments. Sets the associated field to true if specified,
* otherwise sets it to the default value (usually false). */
bool *parse_flag_noarg(const char *argv)
{
bool *result = malloc(sizeof(*result));
*result = true;
return result;
}
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