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enh: code optimization for tbase58

This commit is contained in:
kailixu 2024-02-23 10:16:27 +08:00
parent 75caea4fbf
commit 31cf877f50
1 changed files with 14 additions and 11 deletions
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25
source/util/src/tbase58.c
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@ -87,6 +87,7 @@ static const signed char index_58[256] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}; -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1};
uint8_t *base58_decode(const char *value, size_t inlen, int32_t *outlen) { uint8_t *base58_decode(const char *value, size_t inlen, int32_t *outlen) {
const char *pb = value;
const char *pe = value + inlen; const char *pe = value + inlen;
uint8_t buf[TBASE_BUF_SIZE] = {0}; uint8_t buf[TBASE_BUF_SIZE] = {0};
uint8_t *pbuf = &buf[0]; uint8_t *pbuf = &buf[0];
@ -98,20 +99,22 @@ uint8_t *base58_decode(const char *value, size_t inlen, int32_t *outlen) {
return NULL; return NULL;
} }
for (int32_t i = 0; i < inlen; ++i) { while (pb != pe) {
if (value[i] == 0) { if (*pb == 0) {
terrno = TSDB_CODE_INVALID_PARA; terrno = TSDB_CODE_INVALID_PARA;
return NULL; return NULL;
} }
++pb;
} }
while (*value && isspace(*value)) ++value; pb = value;
while (*value == '1') { while (pb != pe && *pb && isspace(*pb)) ++pb;
while (pb != pe && *pb == '1') {
++nz; ++nz;
++value; ++pb;
} }
size = (int32_t)(pe - value) * 733 / 1000 + 1; size = (int32_t)(pe - pb) * 733 / 1000 + 1;
if (size > TBASE_BUF_SIZE) { if (size > TBASE_BUF_SIZE) {
if (!(pbuf = taosMemoryCalloc(1, size))) { if (!(pbuf = taosMemoryCalloc(1, size))) {
terrno = TSDB_CODE_OUT_OF_MEMORY; terrno = TSDB_CODE_OUT_OF_MEMORY;
@ -120,8 +123,8 @@ uint8_t *base58_decode(const char *value, size_t inlen, int32_t *outlen) {
bfree = true; bfree = true;
} }
while (*value && !isspace(*value)) { while (pb != pe && *pb && !isspace(*pb)) {
int32_t num = index_58[(uint8_t)*value]; int32_t num = index_58[(uint8_t)*pb];
if (num == -1) { if (num == -1) {
terrno = TSDB_CODE_INVALID_PARA; terrno = TSDB_CODE_INVALID_PARA;
if (bfree) taosMemoryFree(pbuf); if (bfree) taosMemoryFree(pbuf);
@ -134,11 +137,11 @@ uint8_t *base58_decode(const char *value, size_t inlen, int32_t *outlen) {
num >>= 8; num >>= 8;
} }
len = i; len = i;
++value; ++pb;
} }
while (isspace(*value)) ++value; while (pb != pe && isspace(*pb)) ++pb;
if (*value != 0) { if (*pb != 0) {
if (bfree) taosMemoryFree(pbuf); if (bfree) taosMemoryFree(pbuf);
return NULL; return NULL;
} }