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#include <stdlib.h>
#include <string.h>
#include "bin.h"
#define W2_ENDIAN_LITTLE (1)
#define W2_ENDIAN_BIG (0)
#define _SHIFT_0B (8 * 0)
#define _SHIFT_1B (8 * 1)
#define _SHIFT_2B (8 * 2)
#define _SHIFT_3B (8 * 3)
#define _BYTE_0 ((uint32_t)(0xff << (_SHIFT_0B)))
#define _BYTE_1 ((uint32_t)(0xff << (_SHIFT_1B)))
#define _BYTE_2 ((uint32_t)(0xff << (_SHIFT_2B)))
#define _BYTE_3 ((uint32_t)(0xff << (_SHIFT_3B)))
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wshift-count-overflow"
w2_s_bin *w2_bin_from_uint8_t(uint8_t data) {
size_t size = 1;
w2_s_bin *ret = malloc(sizeof(w2_s_bin) + sizeof(uint8_t) * size);
ret->bytes = size;
ret->data[0] = data;
return ret;
}
w2_s_bin *w2_bin_from_uint16_t(uint16_t data) {
size_t size = 2;
w2_s_bin *ret = malloc(sizeof(w2_s_bin) + sizeof(uint8_t) * size);
data = w2_bin_hton16(data);
ret->bytes = size;
ret->data[0] = (data & _BYTE_1) >> _SHIFT_1B;
ret->data[1] = (data & _BYTE_0) >> _SHIFT_0B;
return ret;
}
w2_s_bin *w2_bin_from_uint32_t(uint32_t data) {
size_t size = 4;
w2_s_bin *ret = malloc(sizeof(w2_s_bin) + sizeof(uint8_t) * size);
data = w2_bin_hton32(data);
ret->bytes = size;
ret->data[0] = (data & _BYTE_3) >> _SHIFT_3B;
ret->data[1] = (data & _BYTE_2) >> _SHIFT_2B;
ret->data[2] = (data & _BYTE_1) >> _SHIFT_1B;
ret->data[3] = (data & _BYTE_0) >> _SHIFT_0B;
return ret;
}
uint32_t w2_bin_hton32(uint32_t h32) {
if (g_w2_endianness == W2_ENDIAN_BIG) return h32;
return ((h32 & _BYTE_0) << _SHIFT_3B) | ((h32 & _BYTE_1) << _SHIFT_1B) |
((h32 & _BYTE_2) >> _SHIFT_1B) | ((h32 & _BYTE_3) >> _SHIFT_3B);
}
#pragma GCC diagnostic pop
uint16_t w2_bin_hton16(uint16_t h16) {
if (g_w2_endianness == W2_ENDIAN_BIG) return h16;
return ((h16 & _BYTE_0) << _SHIFT_1B) | ((h16 & _BYTE_1) >> _SHIFT_1B);
}
uint32_t w2_bin_ntoh32(uint32_t n32) { return w2_bin_hton32(n32); }
uint16_t w2_bin_ntoh16(uint16_t n16) { return w2_bin_hton16(n16); }
w2_s_bin *w2_bin_s_alloc(uint16_t bytes, uint8_t *data) {
w2_s_bin *temp = malloc(sizeof(w2_s_bin) + sizeof(uint8_t) * bytes);
temp->bytes = bytes;
memcpy(&temp->data, data, bytes);
return temp;
}
w2_s_bin *w2_bin_s_cat(w2_s_bin *a, w2_s_bin *b) {
uint8_t data[a->bytes + b->bytes];
memcpy(data, a->data, a->bytes);
memcpy(data + a->bytes, b->data, b->bytes);
w2_s_bin *c = w2_bin_s_alloc(a->bytes + b->bytes, data);
free(a);
free(b);
return c;
}
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