43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
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#include "base64.h"
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namespace Base64 {
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std::string fromIntV(unsigned int int32) {
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std::string result;
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while (true) {
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result = digits[int32 & 0x3f] + result;
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int32 >>= 6;
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if (int32 == 0) { break; }
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}
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return result;
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}
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std::string fromIntN(unsigned int int32, int n) {
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std::string result;
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for (int i = 0; i < n; ++i) {
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result = digits[int32 & 0x3f] + result;
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int32 >>= 6;
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}
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return result;
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}
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unsigned int toInt(std::string digits) {
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unsigned int result = 0;
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for (size_t i = 0; i < digits.length(); ++i) {
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result = (result << 6) + digitsMap.find(digits[i])->second;
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}
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return result;
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}
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int toIntSigned(std::string digits) {
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int result = 0;
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if (digits.length() > 0 && digitsMap.find(digits[0])->second & 0x20) {
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result = -1;
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}
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for (size_t i = 0; i < digits.length(); ++i) {
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result = (result << 6) + digitsMap.find(digits[i])->second;
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}
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return result;
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}
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}
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