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BLE: Refactor UUID string helper to match mbed-os coding style.

pull/14198/head
Vincent Coubard 2021-01-27 11:45:04 +00:00 committed by Paul Szczepanek
parent e001098699
commit c13e590723
1 changed files with 20 additions and 23 deletions
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43
connectivity/FEATURE_BLE/source/common/ble_trace_helpers.h
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@ -47,42 +47,39 @@ static inline const char* tr_as_array(T item)
static inline char* to_string(const UUID& uuid)
{
const uint8_t* Buffer = uuid.getBaseUUID();
const uint8_t Length = uuid.getLen();
const size_t Row_Count = 4;
static constexpr const size_t ROW_COUNT = 4;
static constexpr const char *HEX = "0123456789ABCDEF";
static constexpr const size_t HYPHENS_DELIMITER_COUNT = 4;
const char *Hex = "0123456789ABCDEF";
static char string_buffer[Row_Count][UUID::LENGTH_OF_LONG_UUID + /* Number of hyphen delimiters =*/ 4];
static char string_buffer[ROW_COUNT][UUID::LENGTH_OF_LONG_UUID + HYPHENS_DELIMITER_COUNT];
static uint8_t idx = 0;
++idx;
if (idx == Row_Count) {
if (idx == ROW_COUNT) {
idx= 0;
}
char* p1 = (char *)Buffer + Length - 1;
char* p2 = string_buffer[idx];
const uint8_t length = uuid.getLen();
const char* reader = (const char *) uuid.getBaseUUID() + length - 1;
char* writer = string_buffer[idx];
if (Length == UUID::LENGTH_OF_LONG_UUID) {
const uint8_t format[] = {4, 2, 2, 2, 6};
for ( uint8_t i: format) {
size_t j = 0;
for (; j < i; ++j) {
*p2++ = Hex[(*p1 >> 4) & 0xF];
*p2++ = Hex[(*p1--) & 0xF];
if (length == UUID::LENGTH_OF_LONG_UUID) {
constexpr uint8_t format[] = {4, 2, 2, 2, 6};
for ( uint8_t char_count: format) {
for (size_t i = 0; i < char_count; ++i) {
*writer++ = HEX[(*reader >> 4) & 0xF];
*writer++ = HEX[(*reader--) & 0xF];
}
*p2++ = '-';
*writer++ = '-';
}
*--p2 = 0;
*--writer = 0;
} else {
size_t i = 0;
for (; i < Length; ++i) {
*p2++ = Hex[(*p1 >> 4) & 0xF];
*p2++ = Hex[(*p1--) & 0xF];
for (size_t i = 0; i < length; ++i) {
*writer++ = HEX[(*reader >> 4) & 0xF];
*writer++ = HEX[(*reader--) & 0xF];
}
*p2 = 0;
*writer = 0;
}
return string_buffer[idx];