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BLI_array: utility function for searching an array

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Campbell Barton
2014-08-17 15:56:44 +10:00
parent 1dd17bed4a
commit ed26d9dd90
2 changed files with 18 additions and 0 deletions
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3
source/blender/blenlib/BLI_array.h
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@@ -181,5 +181,8 @@ void _bli_array_wrap(void *arr, unsigned int arr_len, size_t arr_stride, int dir
#define BLI_array_wrap(arr, arr_len, dir) \ #define BLI_array_wrap(arr, arr_len, dir) \
_bli_array_wrap(arr, arr_len, sizeof(*(arr)), dir) _bli_array_wrap(arr, arr_len, sizeof(*(arr)), dir)
int _bli_array_findindex(const void *arr, unsigned int arr_len, size_t arr_stride, const void *p);
#define BLI_array_findindex(arr, arr_len, p) \
_bli_array_findindex(arr, arr_len, sizeof(*(arr)), p)
#endif /* __BLI_ARRAY_H__ */ #endif /* __BLI_ARRAY_H__ */

15
source/blender/blenlib/intern/BLI_array.c
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@@ -137,3 +137,18 @@ void _bli_array_wrap(void *arr_v, unsigned int arr_len, size_t arr_stride, int d
BLI_assert(0); BLI_assert(0);
} }
} }
/**
* \note Not efficient, use for error checks/asserts.
*/
int _bli_array_findindex(const void *arr, unsigned int arr_len, size_t arr_stride, const void *p)
{
const char *arr_step = (const char *)arr;
unsigned int i;
for (i = 0; i < arr_len; i++, arr_step += arr_stride) {
if (memcmp(arr_step, p, arr_stride) == 0) {
return (int)i;
}
}
return -1;
}