mirror of
https://github.com/LadybirdBrowser/ladybird.git
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122 lines
3.2 KiB
C++
122 lines
3.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Emanuele Torre <torreemanuele6@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/System.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <unistd.h>
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struct Count {
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String name;
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bool exists { true };
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unsigned lines { 0 };
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unsigned characters { 0 };
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unsigned words { 0 };
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size_t bytes { 0 };
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};
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bool g_output_line = false;
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bool g_output_byte = false;
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bool g_output_word = false;
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static void wc_out(Count const& count)
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{
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if (g_output_line)
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out("{:7} ", count.lines);
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if (g_output_word)
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out("{:7} ", count.words);
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if (g_output_byte)
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out("{:7} ", count.bytes);
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outln("{:>14}", count.name);
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}
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static Count get_count(String const& file_specifier)
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{
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Count count;
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FILE* file_pointer = nullptr;
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if (file_specifier == "-") {
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count.name = "";
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file_pointer = stdin;
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} else {
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count.name = file_specifier;
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if ((file_pointer = fopen(file_specifier.characters(), "r")) == nullptr) {
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warnln("wc: unable to open {}", file_specifier);
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count.exists = false;
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return count;
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}
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}
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bool start_a_new_word = true;
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for (int ch = fgetc(file_pointer); ch != EOF; ch = fgetc(file_pointer)) {
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count.bytes++;
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if (isspace(ch)) {
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start_a_new_word = true;
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if (ch == '\n')
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count.lines++;
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} else if (start_a_new_word) {
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start_a_new_word = false;
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count.words++;
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}
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}
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if (file_pointer != stdin)
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fclose(file_pointer);
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return count;
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}
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static Count get_total_count(Vector<Count> const& counts)
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{
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Count total_count { "total" };
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for (auto& count : counts) {
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total_count.lines += count.lines;
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total_count.words += count.words;
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total_count.characters += count.characters;
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total_count.bytes += count.bytes;
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}
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return total_count;
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}
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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TRY(Core::System::pledge("stdio rpath"));
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Vector<String> file_specifiers;
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Core::ArgsParser args_parser;
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args_parser.add_option(g_output_line, "Output line count", "lines", 'l');
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args_parser.add_option(g_output_byte, "Output byte count", "bytes", 'c');
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args_parser.add_option(g_output_word, "Output word count", "words", 'w');
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args_parser.add_positional_argument(file_specifiers, "File to process", "file", Core::ArgsParser::Required::No);
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args_parser.parse(arguments);
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if (!g_output_line && !g_output_byte && !g_output_word)
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g_output_line = g_output_byte = g_output_word = true;
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Vector<Count> counts;
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for (auto const& file_specifier : file_specifiers)
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counts.append(get_count(file_specifier));
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TRY(Core::System::pledge("stdio"));
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if (file_specifiers.is_empty())
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counts.append(get_count("-"));
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else if (file_specifiers.size() > 1)
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counts.append(get_total_count(counts));
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for (auto const& count : counts) {
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if (count.exists)
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wc_out(count);
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}
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return 0;
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}
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