65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
#include "GeneralUtility.h"
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#include <string>
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std::string GeneralUtility::BaseX_2_Y(const std::string &num, const std::string &set_in, const std::string &set_out, const std::uint32_t minOutLen) {
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if ((set_in.length() == 0) || (set_out.length() == 0))
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throw std::logic_error("Can't convert from or to base0! Please supply a nonempty set!");
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std::stringstream ss;
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// Generate a 0-value string for inbase
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ss << set_in[0];
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const std::string zeroInbase = ss.str();
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ss.str("");
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if (num != zeroInbase) {
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std::string buf = num;
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while (buf != zeroInbase) {
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const auto divRes = DigitstringDivision(buf, set_out.length(), set_in);
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const std::uint64_t mod = divRes.second;
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buf = divRes.first;
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ss << set_out[mod];
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}
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// Now reverse buf
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buf = ss.str();
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ss.str("");
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for (std::size_t i = 0; i < buf.length(); i++)
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ss << buf[buf.length() - i - 1];
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}
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else
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{
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// If num is 0, just pass a null-value. The algorithm would hang otherwise.
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ss << set_out[0];
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}
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// Add as much null-values to the left as requested.
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if (ss.str().length() < minOutLen)
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{
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const std::size_t cachedLen = ss.str().length();
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const std::string cachedStr = ss.str();
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ss.str("");
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for (std::size_t i = 0; i < minOutLen - cachedLen; i++)
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ss << set_out[0];
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ss << cachedStr;
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}
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return ss.str();
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}
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std::string GeneralUtility::Base10_2_X(const std::uint64_t &num, const std::string &set, const std::uint32_t minOutLen) {
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// Convert num to a string
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std::stringstream ss;
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ss << num;
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const std::string numStr = ss.str();
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// Use BaseX_2_Y to convert to outbase
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const std::string convertedNum = BaseX_2_Y(numStr, "0123456789", set, minOutLen);
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// return it
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return convertedNum;
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}
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