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sort: Add an option to sort in reverse order

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Lines can now be sorted in reverse order by specifying the `-r` option.
This commit is contained in:
Tim Ledbetter 2023-03-11 20:44:12 +00:00 committed by Sam Atkins
parent f5f1a5228e
commit 0454d655bb
Notes: sideshowbarker 2024-07-17 04:34:25 +09:00 
Author: https://github.com/tcl3
Commit: https://github.com/SerenityOS/serenity/commit/0454d655bb
Pull-request: https://github.com/SerenityOS/serenity/pull/17813
Reviewed-by: https://github.com/AtkinsSJ ✅
1 changed files with 11 additions and 3 deletions
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14
Userland/Utilities/sort.cpp
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@ -55,6 +55,7 @@ struct Options {
size_t key_field { 0 };
bool unique { false };
bool numeric { false };
bool reverse { false };
StringView separator { "\0", 1 };
Vector<DeprecatedString> files;
};
@ -104,6 +105,7 @@ ErrorOr<int> serenity_main([[maybe_unused]] Main::Arguments arguments)
args_parser.add_option(options.unique, "Don't emit duplicate lines", "unique", 'u');
args_parser.add_option(options.numeric, "treat the key field as a number", "numeric", 'n');
args_parser.add_option(options.separator, "The separator to split fields by", "sep", 't', "char");
args_parser.add_option(options.reverse, "Sort in reverse order", "reverse", 'r');
args_parser.add_positional_argument(options.files, "Files to sort", "file", Core::ArgsParser::Required::No);
args_parser.parse(arguments);
@ -120,9 +122,15 @@ ErrorOr<int> serenity_main([[maybe_unused]] Main::Arguments arguments)
quick_sort(lines);
for (auto& line : lines) {
outln("{}", line.line);
}
auto print_lines = [](auto const& lines) {
for (auto& line : lines)
outln("{}", line.line);
};
if (options.reverse)
print_lines(lines.in_reverse());
else
print_lines(lines);
return 0;
}