/**
* driver_find_last:
* @label : string of driver type to be found.
* @s : identifier of driver to be found.
* @len : size of @s.
*
* Find last driver in driver array.
**/
static bool driver_find_last(const char *label, char *s, size_t len)
{
unsigned i;
for (i = 0;
find_driver_nonempty(label, i, s, len) != NULL; i++)
{}
if (i)
find_driver_nonempty(label, i-1, s, len);
else
driver_find_first(label, s, len);
return true;
}
/**
* find_next_driver:
* @label : string of driver type to be found.
* @str : identifier of driver to be found.
* @sizeof_str : size of @str.
*
* Find next driver in driver array.
**/
bool find_next_driver(const char *label, char *str, size_t sizeof_str)
{
int i = find_driver_index(label, str);
if (i >= 0 && (strcmp(str, "null") != 0))
find_driver_nonempty(label, i + 1, str, sizeof_str);
else
{
RARCH_WARN("Couldn't find any next driver (current one: \"%s\").\n", str);
return false;
}
return true;
}
/**
* find_prev_driver:
* @label : string of driver type to be found.
* @str : identifier of driver to be found.
* @sizeof_str : size of @str.
*
* Find previous driver in driver array.
**/
bool find_prev_driver(const char *label, char *str, size_t sizeof_str)
{
int i = find_driver_index(label, str);
if (i > 0)
find_driver_nonempty(label, i - 1, str, sizeof_str);
else
{
RARCH_WARN(
"Couldn't find any previous driver (current one: \"%s\").\n", str);
return false;
}
return true;
}
/**
* driver_find_prev:
* @label : string of driver type to be found.
* @s : identifier of driver to be found.
* @len : size of @s.
*
* Find previous driver in driver array.
**/
static bool driver_find_prev(const char *label, char *s, size_t len)
{
int i = driver_find_index(label, s);
if (i > 0)
find_driver_nonempty(label, i - 1, s, len);
else
{
RARCH_WARN(
"Couldn't find any previous driver (current one: \"%s\").\n", s);
return false;
}
return true;
}
/**
* driver_find_next:
* @label : string of driver type to be found.
* @s : identifier of driver to be found.
* @len : size of @s.
*
* Find next driver in driver array.
**/
bool driver_find_next(const char *label, char *s, size_t len)
{
int i = driver_find_index(label, s);
if (i >= 0 && !string_is_equal(s, "null"))
find_driver_nonempty(label, i + 1, s, len);
else
{
RARCH_WARN("%s (current one: \"%s\").\n",
msg_hash_to_str(MSG_COULD_NOT_FIND_ANY_NEXT_DRIVER),
s);
return false;
}
return true;
}
/**
* driver_find_index:
* @label : string of driver type to be found.
* @drv : identifier of driver to be found.
*
* Find index of the driver, based on @label.
*
* Returns: -1 if no driver based on @label and @drv found, otherwise
* index number of the driver found in the array.
**/
static int driver_find_index(const char * label, const char *drv)
{
unsigned i;
char str[256] = {0};
for (i = 0;
find_driver_nonempty(label, i, str, sizeof(str)) != NULL; i++)
{
if (string_is_empty(str))
break;
if (string_is_equal_noncase(drv, str))
return i;
}
return -1;
}
/**
* find_driver_index:
* @label : string of driver type to be found.
* @drv : identifier of driver to be found.
*
* Find index of the driver, based on @label.
*
* Returns: -1 if no driver based on @label and @drv found, otherwise
* index number of the driver found in the array.
**/
int find_driver_index(const char * label, const char *drv)
{
unsigned i;
char str[PATH_MAX_LENGTH];
const void *obj = NULL;
for (i = 0; (obj = (const void*)
find_driver_nonempty(label, i, str, sizeof(str))) != NULL; i++)
{
if (!obj)
return -1;
if (str[0] == '\0')
break;
if (!strcasecmp(drv, str))
return i;
}
return -1;
}
bool find_first_driver(const char *label, char *str, size_t sizeof_str)
{
find_driver_nonempty(label, 0, str, sizeof_str);
return true;
}
static bool driver_find_first(const char *label, char *s, size_t len)
{
find_driver_nonempty(label, 0, s, len);
return true;
}