mkvtoolnix/rake.d/iso3166.rb
Moritz Bunkus 5d04e5bfd5
BCP 47: use emplace_back for initialization of ISO 3166 region list
It's much faster than using the initializer lists. See previous commits
for more details.
2021-01-26 14:53:31 +01:00

70 lines
1.9 KiB
Ruby

def create_iso3166_country_list_file
cpp_file_name = "src/common/iso3166_country_list.cpp"
iso3166_1 = JSON.parse(IO.readlines("/usr/share/iso-codes/json/iso_3166-1.json").join(''))
rows = iso3166_1["3166-1"].
map do |entry|
[ entry["alpha_2"].upcase.to_cpp_string,
entry["alpha_3"].upcase.to_cpp_string,
sprintf('%03s', entry["numeric"].gsub(%r{^0+}, '')),
entry["name"].to_u8_cpp_string,
(entry["official_name"] || '').to_u8_cpp_string,
]
end
entries = Mtx::IANALanguageSubtagRegistry.fetch_registry
entries["region"].
select { |region| %r{^\d+$}.match(region[:subtag]) }.
each do |region|
rows << [
'""s', '""s',
sprintf('%03s', region[:subtag].gsub(%r{^0+}, '')),
region[:description].to_u8_cpp_string,
'""s',
]
end
header = <<EOT
/*
mkvmerge -- utility for splicing together matroska files
from component media subtypes
Distributed under the GPL v2
see the file COPYING for details
or visit https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
ISO 3166 countries & UN M.49 regions
Written by Moritz Bunkus <moritz@bunkus.org>.
*/
// ------------------------------------------------------------------------
// NOTE: this file is auto-generated by the "dev:iso3166_list" rake target.
// ------------------------------------------------------------------------
#include "common/common_pch.h"
#include "common/iso3166.h"
namespace mtx::iso3166 {
std::vector<region_t> g_regions;
void
init() {
g_regions.reserve(#{rows.size});
EOT
footer = <<EOT
}
} // namespace mtx::iso3166
EOT
rows = rows.sort_by { |row| [ row[0], row[1], row[3] ].join('::') }
content = header + format_table(rows, :column_suffix => ',', :row_prefix => " g_regions.emplace_back(", :row_suffix => ");").join("\n") + "\n" + footer
runq("write", cpp_file_name) { IO.write("#{$source_dir}/#{cpp_file_name}", content); 0 }
end