53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
#pragma once
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#include <algorithm>
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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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using namespace std;
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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 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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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 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 string(buf.data(), needed);
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}
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inline string float_to_string_trimmed(float value)
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{
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ostringstream out;
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out << fixed << setprecision(2) << value;
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string str = out.str();
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// Remove trailing zeros
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str.erase(str.find_last_not_of('0') + 1, 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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inline string to_upper(string& str)
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{
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std::transform(str.begin(), str.end(), str.begin(), [](unsigned char c) { return std::toupper(c); });
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return str;
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}
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} // namespace trnr
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