40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
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#pragma once
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#include <optional>
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#include <string>
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#include <string_view>
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#include <vector>
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namespace izo {
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class CommandLine {
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public:
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CommandLine(int argc, const char* const argv[]);
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CommandLine(int argc, char* argv[]);
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// Has reports whether an option was supplied, including --name=value.
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bool Has(std::string_view name) const noexcept;
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// Get returns the last value supplied as --name value or --name=value.
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// A flag without a value and a missing option both return std::nullopt.
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std::optional<std::string> Get(std::string_view name) const;
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std::string Get(std::string_view name, std::string_view fallback) const;
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int GetInt(std::string_view name, int fallback) const;
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// Arguments not consumed as option values. argv[0] is never included.
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const std::vector<std::string>& Positionals() const noexcept { return positionals_; }
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private:
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struct Option {
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std::string name;
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std::optional<std::string> value;
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};
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void Parse(int argc, const char* const argv[]);
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std::vector<Option> options_;
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std::vector<std::string> positionals_;
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};
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} // namespace izo
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