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LibTimeZone+Meta: Add plumbing for an IANA Time Zone Database generator

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The IANA Time Zone Database contains data needed, at least, for various
JavaScript objects. This adds plumbing for a parser and code generator
for this data. The generated data will be made available by LibTimeZone,
much like how UCD and CLDR data is available through LibUnicode.
This commit is contained in:
Timothy Flynn 2021-12-22 16:33:38 -05:00 • committed by Linus Groh
parent 9ba386a7bb
commit 8669b25cea
8 changed files with 184 additions and 6 deletions
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66
Meta/Lagom/Tools/CodeGenerators/LibTimeZone/GenerateTimeZoneData.cpp Normal file
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/*
* Copyright (c) 2022, Tim Flynn <trflynn89@pm.me>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/SourceGenerator.h>
#include <AK/String.h>
#include <AK/StringBuilder.h>
#include <AK/Vector.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
static void generate_time_zone_data_header(Core::File& file)
{
StringBuilder builder;
SourceGenerator generator { builder };
generator.append(R"~~~(
#pragma once
)~~~");
VERIFY(file.write(generator.as_string_view()));
}
static void generate_time_zone_data_implementation(Core::File& file)
{
StringBuilder builder;
SourceGenerator generator { builder };
generator.append(R"~~~(
#include <LibTimeZone/TimeZoneData.h>
)~~~");
VERIFY(file.write(generator.as_string_view()));
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
StringView generated_header_path;
StringView generated_implementation_path;
Vector<StringView> time_zone_paths;
Core::ArgsParser args_parser;
args_parser.add_option(generated_header_path, "Path to the time zone data header file to generate", "generated-header-path", 'h', "generated-header-path");
args_parser.add_option(generated_implementation_path, "Path to the time zone data implementation file to generate", "generated-implementation-path", 'c', "generated-implementation-path");
args_parser.add_positional_argument(time_zone_paths, "Paths to the time zone database files", "time-zone-paths");
args_parser.parse(arguments);
auto open_file = [&](StringView path) -> ErrorOr<NonnullRefPtr<Core::File>> {
if (path.is_empty()) {
args_parser.print_usage(stderr, arguments.argv[0]);
return Error::from_string_literal("Must provide all command line options"sv);
}
return Core::File::open(path, Core::OpenMode::ReadWrite);
};
auto generated_header_file = TRY(open_file(generated_header_path));
auto generated_implementation_file = TRY(open_file(generated_implementation_path));
generate_time_zone_data_header(generated_header_file);
generate_time_zone_data_implementation(generated_implementation_file);
return 0;
}