fumiama/base16384
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chore: optimize documents

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源文雨
2024-04-06 20:55:39 +09:00
parent 4ff107e46f
commit 5defe71ba9
3 changed files with 31 additions and 28 deletions
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18
base1464.c
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@@ -30,7 +30,7 @@ typedef union {
int base16384_encode_safe(const char* data, int dlen, char* buf) {
int outlen = dlen / 7 * 8;
int offset = dlen % 7;
switch(offset) { // 算上偏移标志字符占用的2字节
switch(offset) { // also count 0x3dxx
case 0: break;
case 1: outlen += 4; break;
case 2:
@@ -112,7 +112,7 @@ int base16384_encode_safe(const char* data, int dlen, char* buf) {
int base16384_encode(const char* data, int dlen, char* buf) {
int outlen = dlen / 7 * 8;
int offset = dlen % 7;
switch(offset) { // 算上偏移标志字符占用的2字节
switch(offset) { // also count 0x3dxx
case 0: break;
case 1: outlen += 4; break;
case 2:
@@ -127,7 +127,7 @@ int base16384_encode(const char* data, int dlen, char* buf) {
int64_t i = 0;
for(; i <= dlen - 7; i += 7) {
register uint64_t sum = 0;
register uint64_t shift = htobe64(*(uint64_t*)(data+i))>>2; // 这里有读取越界
register uint64_t shift = htobe64(*(uint64_t*)(data+i))>>2; // here comes a read overlap
sum |= shift & 0x3fff000000000000;
shift >>= 2;
sum |= shift & 0x00003fff00000000;
@@ -177,7 +177,7 @@ int base16384_encode(const char* data, int dlen, char* buf) {
int base16384_encode_unsafe(const char* data, int dlen, char* buf) {
int outlen = dlen / 7 * 8;
int offset = dlen % 7;
switch(offset) { // 算上偏移标志字符占用的2字节
switch(offset) { // also count 0x3dxx
case 0: break;
case 1: outlen += 4; break;
case 2:
@@ -192,7 +192,7 @@ int base16384_encode_unsafe(const char* data, int dlen, char* buf) {
int64_t i = 0;
for(; i < dlen; i += 7) {
register uint64_t sum = 0;
register uint64_t shift = htobe64(*(uint64_t*)(data+i))>>2; // 这里有读取越界
register uint64_t shift = htobe64(*(uint64_t*)(data+i))>>2; // here comes a read overlap
sum |= shift & 0x3fff000000000000;
shift >>= 2;
sum |= shift & 0x00003fff00000000;
@@ -215,7 +215,7 @@ int base16384_decode_safe(const char* data, int dlen, char* buf) {
int offset = 0;
if(data[dlen-2] == '=') {
offset = data[dlen-1];
switch(offset) { // 算上偏移标志字符占用的2字节
switch(offset) { // also count 0x3dxx
case 0: break;
case 1: outlen -= 4; break;
case 2:
@@ -292,7 +292,7 @@ int base16384_decode(const char* data, int dlen, char* buf) {
int offset = 0;
if(data[dlen-2] == '=') {
offset = data[dlen-1];
switch(offset) { // 算上偏移标志字符占用的2字节
switch(offset) { // also count 0x3dxx
case 0: break;
case 1: outlen -= 4; break;
case 2:
@@ -322,7 +322,7 @@ int base16384_decode(const char* data, int dlen, char* buf) {
}
if(*(uint8_t*)(&vals[n]) == '=') return outlen;
if(offset--) {
// 这里有读取越界
// here comes a read overlap
#ifdef WORDS_BIGENDIAN
register uint64_t sum = __builtin_bswap64(vals[n]) - 0x000000000000004e;
#else
@@ -356,7 +356,7 @@ int base16384_decode_unsafe(const char* data, int dlen, char* buf) {
int offset = 0;
if(data[dlen-2] == '=') {
offset = data[dlen-1];
switch(offset) { // 算上偏移标志字符占用的2字节
switch(offset) { // also count 0x3dxx
case 0: break;
case 1: outlen -= 4; break;
case 2: