forked from lix-project/lix
26 lines
735 B
C++
26 lines
735 B
C++
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#pragma once
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#include <optional>
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namespace nix {
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// If `separator` is found, we return the portion of the string before the
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// separator, and modify the string argument to contain only the part after the
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// separator. Otherwise, wer return `std::nullopt`, and we leave the argument
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// string alone.
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std::optional<std::string_view> splitPrefix(std::string_view & string, char separator);
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std::optional<std::string_view> splitPrefix(std::string_view & string, char separator) {
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auto sepInstance = string.find(separator);
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if (sepInstance != std::string_view::npos) {
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auto prefix = string.substr(0, sepInstance);
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string.remove_prefix(sepInstance+1);
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return prefix;
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}
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return std::nullopt;
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}
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}
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