ladybird/Userland/Utilities/nl.cpp
Ali Mohammad Pur 5e1499d104 Everywhere: Rename {Deprecated => Byte}String
This commit un-deprecates DeprecatedString, and repurposes it as a byte
string.
As the null state has already been removed, there are no other
particularly hairy blockers in repurposing this type as a byte string
(what it _really_ is).

This commit is auto-generated:
  $ xs=$(ack -l \bDeprecatedString\b\|deprecated_string AK Userland \
    Meta Ports Ladybird Tests Kernel)
  $ perl -pie 's/\bDeprecatedString\b/ByteString/g;
    s/deprecated_string/byte_string/g' $xs
  $ clang-format --style=file -i \
    $(git diff --name-only | grep \.cpp\|\.h)
  $ gn format $(git ls-files '*.gn' '*.gni')
2023-12-17 18:25:10 +03:30

94 lines
3.3 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/ByteString.h>
#include <AK/Vector.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibMain/Main.h>
enum NumberStyle {
NumberAllLines,
NumberNonEmptyLines,
NumberNoLines,
};
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
NumberStyle number_style = NumberNonEmptyLines;
int increment = 1;
StringView separator = " "sv;
int start_number = 1;
int number_width = 6;
Vector<StringView> filenames;
Core::ArgsParser args_parser;
Core::ArgsParser::Option number_style_option {
Core::ArgsParser::OptionArgumentMode::Required,
"Line numbering style: 't' for non-empty lines, 'a' for all lines, 'n' for no lines",
"body-numbering",
'b',
"style",
[&number_style](StringView s) {
if (s == "t"sv)
number_style = NumberNonEmptyLines;
else if (s == "a"sv)
number_style = NumberAllLines;
else if (s == "n"sv)
number_style = NumberNoLines;
else
return false;
return true;
}
};
args_parser.add_option(move(number_style_option));
args_parser.add_option(increment, "Line count increment", "increment", 'i', "number");
args_parser.add_option(separator, "Separator between line numbers and lines", "separator", 's', "string");
args_parser.add_option(start_number, "Initial line number", "startnum", 'v', "number");
args_parser.add_option(number_width, "Number width", "width", 'w', "number");
args_parser.add_positional_argument(filenames, "Files to process", "file", Core::ArgsParser::Required::No);
args_parser.parse(arguments);
if (filenames.is_empty())
filenames.append(""sv);
for (auto const filename : filenames) {
auto maybe_file = Core::File::open_file_or_standard_stream(filename, Core::File::OpenMode::Read);
if (maybe_file.is_error()) {
warnln("Failed to open {}: {}", filename, maybe_file.release_error());
continue;
}
auto file = maybe_file.release_value();
int line_number = start_number - increment; // so the line number can start at 1 when added below
Optional<u8> previous_character;
u8 next_character;
for (Bytes bytes = TRY(file->read_some({ &next_character, 1 })); bytes.size() != 0; bytes = TRY(file->read_some(bytes))) {
if (!previous_character.has_value() || previous_character == '\n') {
if (next_character == '\n' && number_style != NumberAllLines) {
// Skip printing line count on empty lines.
outln();
continue;
}
if (number_style != NumberNoLines)
out("{1:{0}}{2}", number_width, (line_number += increment), separator);
else
out("{1:{0}}", number_width, "");
}
putchar(next_character);
previous_character = next_character;
}
if (previous_character.has_value() && previous_character != '\n')
outln(); // for cases where files have no trailing newline
}
return 0;
}