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cl-refactor
chriseth 10 years ago
parent
commit
6f2731d3f3
  1. 43
      libdevcore/Base64.cpp

43
libdevcore/Base64.cpp

@ -27,6 +27,8 @@
/// Originally by René Nyffenegger, modified by some other guy and then devified by Gav Wood.
#include "Base64.h"
using namespace std;
using namespace dev;
static inline bool is_base64(byte c)
@ -44,14 +46,14 @@ static inline byte find_base64_char_index(byte c)
else return 1 + find_base64_char_index('/');
}
std::string dev::toBase64(bytesConstRef _in)
string dev::toBase64(bytesConstRef _in)
{
static const char base64_chars[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/";
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/";
std::string ret;
string ret;
int i = 0;
int j = 0;
byte char_array_3[3];
@ -60,15 +62,17 @@ std::string dev::toBase64(bytesConstRef _in)
auto buf = _in.data();
auto bufLen = _in.size();
while (bufLen--) {
while (bufLen--)
{
char_array_3[i++] = *(buf++);
if (i == 3) {
if (i == 3)
{
char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
char_array_4[3] = char_array_3[2] & 0x3f;
for(i = 0; (i <4) ; i++)
for (i = 0; i < 4; i++)
ret += base64_chars[char_array_4[i]];
i = 0;
}
@ -76,7 +80,7 @@ std::string dev::toBase64(bytesConstRef _in)
if (i)
{
for(j = i; j < 3; j++)
for (j = i; j < 3; j++)
char_array_3[j] = '\0';
char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
@ -84,28 +88,31 @@ std::string dev::toBase64(bytesConstRef _in)
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
char_array_4[3] = char_array_3[2] & 0x3f;
for (j = 0; (j < i + 1); j++)
for (j = 0; j < i + 1; j++)
ret += base64_chars[char_array_4[j]];
while((i++ < 3))
while (i++ < 3)
ret += '=';
}
return ret;
}
bytes dev::fromBase64(std::string const& encoded_string)
bytes dev::fromBase64(string const& encoded_string)
{
auto in_len = encoded_string.size();
int i = 0;
int j = 0;
int in_ = 0;
byte char_array_4[4], char_array_3[3];
byte char_array_3[3];
byte char_array_4[4];
bytes ret;
while (in_len-- && ( encoded_string[in_] != '=') && is_base64(encoded_string[in_])) {
while (in_len-- && encoded_string[in_] != '=' && is_base64(encoded_string[in_]))
{
char_array_4[i++] = encoded_string[in_]; in_++;
if (i == 4) {
if (i == 4)
{
for (i = 0; i < 4; i++)
char_array_4[i] = find_base64_char_index(char_array_4[i]);
@ -119,7 +126,8 @@ bytes dev::fromBase64(std::string const& encoded_string)
}
}
if (i) {
if (i)
{
for (j = i; j < 4; j++)
char_array_4[j] = 0;
@ -130,7 +138,8 @@ bytes dev::fromBase64(std::string const& encoded_string)
char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];
for (j = 0; (j < i - 1); j++) ret.push_back(char_array_3[j]);
for (j = 0; j < i - 1; j++)
ret.push_back(char_array_3[j]);
}
return ret;

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