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121 lines
2.7 KiB
121 lines
2.7 KiB
4 months ago
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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// -*- Mode: C++ -*-
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//
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// Copyright (C) 2013-2020 Red Hat, Inc.
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//
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// Author: Dodji Seketeli
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/// @file
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///
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/// This is a tool that reads an ini file and, if it could read it OK,
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/// prints it on its standard output. It's mainly meant to test the
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/// abigail::ini::* functions, but one could also use it to make sure
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/// that an ini file can be handled by the abigail::ini::* facilities
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#include <cstring>
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#include <iostream>
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#include "abg-ini.h"
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using std::cout;
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using std::cerr;
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using std::cin;
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using std::string;
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using std::ostream;
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using abigail::ini::config;
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using abigail::ini::config_sptr;
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using abigail::ini::read_config;
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using abigail::ini::write_config;
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struct options
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{
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bool display_usage;
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bool read_from_stdin;
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bool no_out;
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bool wrong_command_line_usage;
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string path;
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options ()
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: display_usage(false),
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read_from_stdin(false),
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no_out(false),
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wrong_command_line_usage(false)
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{}
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};
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static void
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display_usage(const string& prog_name, ostream& out)
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{
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out << "usage: " << prog_name << " [options] <ini file>\n"
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<< "where options can be:\n"
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<< "--help display this help\n"
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<< "--from-stdin read the input ini file from stdin\n"
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<< "--noout do not output anything on stdout\n"
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;
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}
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static bool
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parse_command_line(int argc, char* argv[], options& opts)
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{
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if (argc == 1)
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return false;
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for (int i = 1; i < argc; ++i)
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{
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if (argv[i][0] != '-')
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{
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if (opts.path.empty())
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opts.path = argv[i];
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else
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opts.wrong_command_line_usage = true;
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}
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else if (!strcmp(argv[i], "--help"))
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opts.display_usage = true;
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else if (!strcmp(argv[i], "--from-stdin"))
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opts.read_from_stdin = true;
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else if (!strcmp(argv[i], "--noout"))
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opts.no_out = true;
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else
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return false;
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}
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return true;
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}
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int
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main(int argc, char* argv[])
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{
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// First, parse the command line.
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options opts;
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if (argc == 1 || !parse_command_line(argc, argv, opts))
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{
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cerr << argv[0] << ": bad command usage\n"
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<< "Try " << argv[0] << " --help for more information\n";
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return 1;
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}
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// Then if we need to display the help, display it and get out.
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if (opts.display_usage)
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{
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display_usage(argv[0], cout);
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return 0;
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}
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// Otherwise, do the real work we are supposed to do after all.
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// That real work is driven by the options the user set; these
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// options are recorded in the opts variable.
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config_sptr conf;
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if (opts.read_from_stdin)
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conf = read_config(cin);
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else if (!opts.path.empty())
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conf = read_config(opts.path);
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if (conf && !opts.no_out)
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write_config(*conf, std::cout);
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return !conf;
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}
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