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ByteStreamToBase64 always returns std::string

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orignal 2025-03-17 19:05:10 -04:00
parent 8e6b9370d0
commit bbf5c1655a
3 changed files with 2 additions and 82 deletions
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78
libi2pd/Base.cpp
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@ -58,15 +58,13 @@ namespace data
/*
* Reverse Substitution Table (built in run time)
*/
static char iT64[256];
static int isFirstTime = 1;
/*
* Padding
*/
static char P64 = '=';
static constexpr char P64 = '=';
/*
*
@ -76,80 +74,6 @@ namespace data
* Converts binary encoded data to BASE64 format.
*
*/
size_t ByteStreamToBase64 ( // Number of bytes in the encoded buffer
const uint8_t * InBuffer, // Input buffer, binary data
size_t InCount, // Number of bytes in the input buffer
char * OutBuffer, // output buffer
size_t len // length of output buffer
)
{
unsigned char * ps;
unsigned char * pd;
unsigned char acc_1;
unsigned char acc_2;
int i;
int n;
int m;
size_t outCount;
ps = (unsigned char *)InBuffer;
n = InCount / 3;
m = InCount % 3;
if (!m)
outCount = 4 * n;
else
outCount = 4 * (n + 1);
if (outCount > len) return 0;
pd = (unsigned char *)OutBuffer;
for ( i = 0; i < n; i++ )
{
acc_1 = *ps++;
acc_2 = (acc_1 << 4) & 0x30;
acc_1 >>= 2; // base64 digit #1
*pd++ = T64[acc_1];
acc_1 = *ps++;
acc_2 |= acc_1 >> 4; // base64 digit #2
*pd++ = T64[acc_2];
acc_1 &= 0x0f;
acc_1 <<= 2;
acc_2 = *ps++;
acc_1 |= acc_2 >> 6; // base64 digit #3
*pd++ = T64[acc_1];
acc_2 &= 0x3f; // base64 digit #4
*pd++ = T64[acc_2];
}
if ( m == 1 )
{
acc_1 = *ps++;
acc_2 = (acc_1 << 4) & 0x3f; // base64 digit #2
acc_1 >>= 2; // base64 digit #1
*pd++ = T64[acc_1];
*pd++ = T64[acc_2];
*pd++ = P64;
*pd++ = P64;
}
else if ( m == 2 )
{
acc_1 = *ps++;
acc_2 = (acc_1 << 4) & 0x3f;
acc_1 >>= 2; // base64 digit #1
*pd++ = T64[acc_1];
acc_1 = *ps++;
acc_2 |= acc_1 >> 4; // base64 digit #2
*pd++ = T64[acc_2];
acc_1 &= 0x0f;
acc_1 <<= 2; // base64 digit #3
*pd++ = T64[acc_1];
*pd++ = P64;
}
return outCount;
}
std::string ByteStreamToBase64 (// base64 encoded string
const uint8_t * InBuffer, // Input buffer, binary data
size_t InCount // Number of bytes in the input buffer