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46 lines
995 B
46 lines
995 B
#include "utils/format_int.hpp" |
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#include "utils/language.h" |
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#include "utils/stdcompat/string_view.hpp" |
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#include "utils/str_cat.hpp" |
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namespace devilution { |
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std::string FormatInteger(int n) |
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{ |
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constexpr size_t GroupSize = 3; |
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char buf[40]; |
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char *begin = buf; |
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const char *end = BufCopy(buf, n); |
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const size_t len = end - begin; |
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std::string out; |
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const size_t prefixLen = n < 0 ? 1 : 0; |
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const size_t numLen = len - prefixLen; |
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if (numLen <= GroupSize) { |
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out.append(begin, len); |
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return out; |
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} |
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const string_view separator = _(/* TRANSLATORS: Thousands separator */ ","); |
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out.reserve(len + separator.size() * (numLen - 1) / GroupSize); |
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if (n < 0) { |
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out += '-'; |
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++begin; |
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} |
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size_t mlen = numLen % GroupSize; |
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if (mlen == 0) |
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mlen = GroupSize; |
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out.append(begin, mlen); |
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begin += mlen; |
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for (; begin != end; begin += GroupSize) { |
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out.append(separator); |
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out.append(begin, GroupSize); |
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} |
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return out; |
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} |
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} // namespace devilution
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