chore: import upstream snapshot with attribution

samples/common/getOptions.h

@@ -0,0 +1,135 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 1993-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef TRT_GET_OPTIONS_H
+#define TRT_GET_OPTIONS_H
+
+#include <string>
+#include <utility>
+#include <vector>
+
+namespace nvinfer1::utility
+{
+
+//! TRTOption defines a command line option. At least 1 of shortName and longName
+//! must be defined.
+//! If bool initialization is undefined behavior on your system, valueRequired
+//! must also be explicitly defined.
+//! helpText is optional.
+struct TRTOption
+{
+    char shortName{};     //!< Option name in short (single hyphen) form (e.g., -a, -b); '\0' for no short name.
+    std::string longName; //!< Option name in long (double hyphen) form (e.g., --foo, --bar); empty for no long name.
+    bool valueRequired{}; //!< True if a value is needed for an option (e.g., -N 4, --foo bar); false for not required.
+    std::string helpText; //!< Text to show when printing out the command usage
+};
+
+//! TRTParsedArgs is returned by getOptions after it has parsed a command line
+//! argument list (argv).
+struct TRTParsedArgs
+{
+    //! An error message if any errors occurred. Empty if no errors occurred.
+    std::string errMsg;
+
+    //! A value for an option.
+    struct Value
+    {
+        //! The number of occurrences of the option (for value-required options, this equals `values.size()`).
+        int32_t occurrences{};
+        //! The values for the option. For non-value args, will be empty.
+        std::vector<std::string> values;
+        //! Increment the number of occurrences (for a non-value arg).
+        void addOccurrence()
+        {
+            ++occurrences;
+        }
+        //! Append \p value and set \p occurrences to the number of values.
+        void addOccurrence(std::string value)
+        {
+            values.push_back(std::move(value));
+            occurrences = values.size();
+        }
+    };
+    //! A list of values for each option.
+    std::vector<Value> values;
+    //! Positional arguments that are passed in without an option (these must not start with a hyphen).
+    std::vector<std::string> positionalArgs;
+};
+
+//! Parse the input arguments passed to main() and extract options as well as
+//! positional arguments.
+//!
+//! Options are supposed to be passed to main() with a preceding hyphen '-'.
+//!
+//! If there is a single preceding hyphen, there should be exactly 1 character
+//! after the hyphen, which is interpreted as the option.
+//!
+//! If there are 2 preceding hyphens, the entire argument (without the hyphens)
+//! is interpreted as the option.
+//!
+//! If the option requires a value, the next argument is used as the value.
+//!
+//! Positional arguments must not start with a hyphen.
+//!
+//! If an argument requires a value, the next argument is interpreted as the
+//! value, even if it is the form of a valid option (i.e. --foo --bar will store
+//! "--bar" as a value for option "foo" if "foo" requires a value).
+//! We also support --name=value syntax. In this case, 'value' would be used as
+//! the value, NOT the next argument.
+//!
+//! For options:
+//!   { { 'a', "", false },
+//!     { 'b', "", false },
+//!     { 0, "cee", false },
+//!     { 'd', "", true },
+//!     { 'e', "", true },
+//!     { 'f', "foo", true } }
+//!
+//! ./main hello world -a -a --cee -d 12 -f 34
+//! and
+//! ./main hello world -a -a --cee -d 12 --foo 34
+//!
+//! will result in:
+//!
+//! TRTParsedArgs {
+//!      errMsg: "",
+//!      values: { { 2, {} },
+//!                { 0, {} },
+//!                { 1, {} },
+//!                { 1, {"12"} },
+//!                { 0, {} },
+//!                { 1, {"34"} } }
+//!      positionalArgs: {"hello", "world"},
+//! }
+//!
+//! Non-POSIX behavior:
+//!      - Does not support "-abcde" as a shorthand for "-a -b -c -d -e". Each
+//!        option must have its own hyphen prefix.
+//!      - Does not support -e12 as a shorthand for "-e 12". Values MUST be
+//!        whitespace-separated from the option it is for.
+//!
+//! @param[in] argc The number of arguments passed to main (including the
+//!            file name, which is disregarded)
+//! @param[in] argv The arguments passed to main (including the file name,
+//!            which is disregarded)
+//! @param[in] options List of TRTOptions to parse
+//! @return TRTParsedArgs. See TRTParsedArgs documentation for descriptions of
+//!         the fields.
+[[nodiscard]] TRTParsedArgs getOptions(int argc, char const* const* argv, std::vector<TRTOption> const& options);
+} // namespace nvinfer1::utility
+
+#endif // TRT_GET_OPTIONS_H