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tdutils/td/utils/OptionsParser.h

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+/*
+    This file is part of TON Blockchain Library.
+
+    TON Blockchain Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    TON Blockchain Library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2017-2019 Telegram Systems LLP
+*/
+#pragma once
+
+#include "td/utils/common.h"
+#include "td/utils/Slice.h"
+#include "td/utils/Status.h"
+#include "td/utils/StringBuilder.h"
+
+#include <functional>
+
+namespace td {
+
+class OptionsParser {
+  class Option {
+   public:
+    enum Type { NoArg, Arg, OptionalArg };
+    Type type;
+    char short_key;
+    std::string long_key;
+    std::string description;
+    std::function<Status(Slice)> arg_callback;
+  };
+
+ public:
+  void set_description(std::string description);
+
+  void add_option(Option::Type type, char short_key, Slice long_key, Slice description,
+                  std::function<Status(Slice)> callback);
+
+  void add_option(char short_key, Slice long_key, Slice description, std::function<Status(Slice)> callback);
+
+  void add_option(char short_key, Slice long_key, Slice description, std::function<Status(void)> callback);
+
+  Result<int> run(int argc, char *argv[]) TD_WARN_UNUSED_RESULT;
+
+  friend StringBuilder &operator<<(StringBuilder &sb, const OptionsParser &o);
+
+ private:
+  std::vector<Option> options_;
+  std::string description_;
+};
+
+}  // namespace td