71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
//
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// Copyright 2019 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef ABSL_FLAGS_INTERNAL_PARSE_H_
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#define ABSL_FLAGS_INTERNAL_PARSE_H_
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#include <iostream>
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#include <ostream>
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#include <string>
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#include <vector>
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#include "absl/base/config.h"
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#include "absl/flags/declare.h"
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#include "absl/flags/internal/usage.h"
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#include "absl/strings/string_view.h"
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ABSL_DECLARE_FLAG(std::vector<std::string>, flagfile);
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ABSL_DECLARE_FLAG(std::vector<std::string>, fromenv);
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ABSL_DECLARE_FLAG(std::vector<std::string>, tryfromenv);
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ABSL_DECLARE_FLAG(std::vector<std::string>, undefok);
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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namespace flags_internal {
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enum class UsageFlagsAction { kHandleUsage, kIgnoreUsage };
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enum class OnUndefinedFlag {
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kIgnoreUndefined,
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kReportUndefined,
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kAbortIfUndefined
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};
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// This is not a public interface. This interface exists to expose the ability
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// to change help output stream in case of parsing errors. This is used by
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// internal unit tests to validate expected outputs.
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// When this was written, `EXPECT_EXIT` only supported matchers on stderr,
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// but not on stdout.
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std::vector<char*> ParseCommandLineImpl(
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int argc, char* argv[], UsageFlagsAction usage_flag_action,
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OnUndefinedFlag undef_flag_action,
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std::ostream& error_help_output = std::cout);
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// --------------------------------------------------------------------
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// Inspect original command line
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// Returns true if flag with specified name was either present on the original
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// command line or specified in flag file present on the original command line.
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bool WasPresentOnCommandLine(absl::string_view flag_name);
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// Return existing flags similar to the parameter, in order to help in case of
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// misspellings.
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std::vector<std::string> GetMisspellingHints(absl::string_view flag);
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} // namespace flags_internal
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ABSL_NAMESPACE_END
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} // namespace absl
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#endif // ABSL_FLAGS_INTERNAL_PARSE_H_
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