43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
#pragma once
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#include <cstdarg>
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#include <iomanip>
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#include <sstream>
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#include <string>
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#include <vector>
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namespace trnr {
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// Formats a string (like printf) using a format string and variable arguments.
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inline std::string format(const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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std::vector<char> buf(256);
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int needed = vsnprintf(buf.data(), buf.size(), fmt, args);
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va_end(args);
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if (needed < 0) { return {}; }
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if (static_cast<size_t>(needed) < buf.size()) { return std::string(buf.data(), needed); }
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// Resize and try again if the buffer was too small
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buf.resize(needed + 1);
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va_start(args, fmt);
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vsnprintf(buf.data(), buf.size(), fmt, args);
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va_end(args);
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return std::string(buf.data(), needed);
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}
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inline std::string float_to_string_trimmed(float value)
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{
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std::ostringstream out;
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out << std::fixed << std::setprecision(2) << value;
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std::string str = out.str();
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// Remove trailing zeros
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str.erase(str.find_last_not_of('0') + 1, std::string::npos);
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// If the last character is a decimal point, remove it as well
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if (!str.empty() && str.back() == '.') { str.pop_back(); }
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return str;
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}
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} // namespace trnr
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