From aa468ad75539619b47979911297efbb629c52e44 Mon Sep 17 00:00:00 2001 From: Abseil Team Date: Tue, 7 May 2019 12:56:42 -0700 Subject: Export of internal Abseil changes. -- 78293ba4eb4981991ae7e6edd25eb9245fcd7515 by Andy Soffer : internal changes PiperOrigin-RevId: 247073879 -- 7bd97e3aad0c3012b89a39392a6ad3f254e9f3c3 by Derek Mauro : Release commandline flags PiperOrigin-RevId: 247065920 -- 2a991849fd7b140a43b073076d194b61533fd199 by Tom Manshreck : Add documentation for built-in usage flags PiperOrigin-RevId: 247058863 -- 14157b0de45841706bbd631284191fd94c313db9 by Derek Mauro : Internal change PiperOrigin-RevId: 247058292 -- ed67e0a80468596e30540b367727a250fa415b68 by Abseil Team : Internal Change. PiperOrigin-RevId: 246828655 -- e1bc8c2aa3f90b3d56c55c5b7244e718c919265d by Abseil Team : Internal change PiperOrigin-RevId: 246822325 -- 907a68f287199f749cb9bdb48571b50bc34731e1 by Eric Fiselier : Accept vector::reference in StrCat and friends. Converting vector::reference to alphanum requires two user defined conversions, which isn't allowed. In order to accept this, we need a special constructor that is only enabled for the bool proxy types. PiperOrigin-RevId: 246626732 -- fe4295fa95cc65dee8c881ba12dd8f516e68c40d by Abseil Team : Clarify the proper way to define AbslHashValue, and fix confusing indentation. PiperOrigin-RevId: 246406528 -- d7174681a72d4a25c8fd2b4d9f515a0763eff87c by Gennadiy Rozental : Internal change PiperOrigin-RevId: 246358214 -- a7fdc19683cf1a5885e9e1af52fcdb2db1eda53b by Abseil Team : Fix sample template instantiation. PiperOrigin-RevId: 246354617 -- 29a23c6835f872948d09b24d890385bf195bc995 by Abseil Team : Fix incorrectly copy-pasted static_assert in absl::optional::value_or The static_assert for a move-constructible type previously said the type must be copy-constructible. PiperOrigin-RevId: 246313827 -- 41884d5872d4ea2c67875b00144b8c8a5859a295 by Greg Falcon : Import of CCTZ from GitHub. PiperOrigin-RevId: 245418790 -- 7f90a7f94cdd5e21232c749efe952a750b5c43a2 by Abseil Team : Internal change PiperOrigin-RevId: 245412658 -- 730a329cf047d54b46971fce1781edd857208c2a by Greg Falcon : internal change PiperOrigin-RevId: 245293234 -- cf0216be6338200cbb18167d3f3b2e98e372be77 by Greg Falcon : Internal change PiperOrigin-RevId: 245288164 GitOrigin-RevId: 78293ba4eb4981991ae7e6edd25eb9245fcd7515 Change-Id: I5ea9a852c36c722bae2d6be65fb7f72473d94ab6 --- absl/flags/parse.h | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 absl/flags/parse.h (limited to 'absl/flags/parse.h') diff --git a/absl/flags/parse.h b/absl/flags/parse.h new file mode 100644 index 0000000..dbb7510 --- /dev/null +++ b/absl/flags/parse.h @@ -0,0 +1,58 @@ +// +// Copyright 2019 The Abseil Authors. +// +// 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 +// +// https://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. +// +// ----------------------------------------------------------------------------- +// File: parse.h +// ----------------------------------------------------------------------------- +// +// This file defines the main parsing function for Abseil flags: +// `absl::ParseCommandLine()`. + +#ifndef ABSL_FLAGS_PARSE_H_ +#define ABSL_FLAGS_PARSE_H_ + +#include +#include + +#include "absl/flags/internal/parse.h" + +namespace absl { + +// ParseCommandLine() +// +// Parses the set of command-line arguments passed in the `argc` (argument +// count) and `argv[]` (argument vector) parameters from `main()`, assigning +// values to any defined Abseil flags. (Any arguments passed after the +// flag-terminating delimiter (`--`) are treated as positional arguments and +// ignored.) +// +// Any command-line flags (and arguments to those flags) are parsed into Abseil +// Flag values, if those flags are defined. Any undefined flags will either +// return an error, or be ignored if that flag is designated using `undefok` to +// indicate "undefined is OK." +// +// Any command-line positional arguments not part of any command-line flag (or +// arguments to a flag) are returned in a vector, with the program invocation +// name at position 0 of that vector. (Note that this includes positional +// arguments after the flag-terminating delimiter `--`.) +// +// After all flags and flag arguments are parsed, this function looks for any +// built-in usage flags (e.g. `--help`), and if any were specified, it reports +// help messages and then exits the program. +std::vector ParseCommandLine(int argc, char* argv[]); + +} // namespace absl + +#endif // ABSL_FLAGS_PARSE_H_ -- cgit v1.2.3