mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-11 01:06:01 +03:00
24a469f521
The former automatically adapts the prefix to binary and octal
output, and is what we already use in the majority of cases.
Patch generated by:
rg -l '0x\{' | xargs sed -i '' -e 's/0x{:/{:#/'
I ran it 4 times (until it stopped changing things) since each
invocation only converted one instance per line.
No behavior change.
373 lines
12 KiB
C++
373 lines
12 KiB
C++
/*
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* Copyright (c) 2024, Nils Ollrogge <nils-ollrogge@outlook.de>.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/AllOf.h>
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#include <AK/CharacterTypes.h>
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#include <AK/StdLibExtras.h>
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#include <AK/String.h>
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#include <AK/StringUtils.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/File.h>
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#include <LibCore/System.h>
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#include <LibMain/Main.h>
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static constexpr size_t BYTES_PER_LINE_HEX = 16;
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static constexpr size_t BYTES_PER_LINE_C = 12;
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static constexpr size_t BYTES_PER_LINE_BITS = 6;
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static constexpr size_t BYTES_PER_LINE_PLAIN_HEX = 30;
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static constexpr size_t BYTES_PER_LINE_MAX = 256;
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static constexpr size_t GROUP_SIZE_HEX = 2;
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static constexpr size_t GROUP_SIZE_HEX_LITTLE_ENDIAN = 4;
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static constexpr size_t GROUP_SIZE_BITS = 1;
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static constexpr size_t GROUP_SIZE_PLAIN_HEX = 0;
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enum class DisplayStyle {
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Hex,
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PlainHex,
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HexLittleEndian,
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CStyle,
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Bits
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};
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static void print_ascii(Bytes line)
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{
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for (auto const& byte : line) {
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if (is_ascii_printable(byte)) {
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putchar(byte);
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} else {
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putchar('.');
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}
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}
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}
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static void print_line_hex(Bytes line, size_t line_length_config, size_t group_size, bool uppercase)
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{
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for (size_t i = 0; i < line_length_config; ++i) {
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if (i < line.size()) {
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if (uppercase) {
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out("{:02X}", line[i]);
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} else {
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out("{:02x}", line[i]);
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}
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} else {
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out(" ");
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}
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if (group_size != 0 && (i + 1) % group_size == 0) {
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out(" ");
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}
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}
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out(" ");
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}
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static void print_line_little_endian_hex(Bytes line, size_t line_length_config, size_t group_size, bool uppercase)
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{
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if (group_size == 1) {
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print_line_hex(line, line_length_config, group_size, uppercase);
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return;
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}
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if (group_size == 0 || group_size > BYTES_PER_LINE_HEX) {
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group_size = BYTES_PER_LINE_HEX;
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}
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for (size_t i = 0; i < line_length_config; i += group_size) {
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if (i < line.size()) {
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size_t size = i + group_size < line.size() ? group_size : line.size() - i;
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auto group = line.slice(i, size);
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if (size < group_size) {
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for (size_t i = 0; i < group_size - size; ++i) {
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out(" ");
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}
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}
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for (ssize_t i = group.size() - 1; i >= 0; --i) {
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if (uppercase) {
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out("{:02X}", group[i]);
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} else {
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out("{:02x}", group[i]);
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}
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}
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} else {
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for (size_t i = 0; i < group_size; ++i) {
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out(" ");
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}
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}
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out(" ");
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}
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out(" ");
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}
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static void print_line_bits(Bytes line, size_t line_length_config, size_t group_size)
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{
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auto print_byte = [](u8 byte) {
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for (ssize_t i = 7; i >= 0; --i) {
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out("{}", (byte >> i) & 1 ? '1' : '0');
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}
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};
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for (size_t i = 0; i < line_length_config; ++i) {
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if (i < line.size()) {
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print_byte(line[i]);
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} else {
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out(" ");
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}
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if (group_size > 0 && (i + 1) % group_size == 0) {
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out(" ");
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}
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}
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out(" ");
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}
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static void print_line_c_style(Bytes line)
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{
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out(" ");
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for (size_t i = 0; i < line.size() - 1; ++i) {
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out("{:#02x}, ", line[i]);
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}
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out("{:#02x}", line[line.size() - 1]);
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}
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static ErrorOr<String> path_to_variable_name(StringView path)
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{
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auto work = path.to_byte_string();
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work = work.replace("."sv, "_"sv, ReplaceMode::All);
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work = work.replace("/"sv, "_"sv, ReplaceMode::All);
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return TRY(String::from_byte_string(work));
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}
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ErrorOr<int> serenity_main(Main::Arguments args)
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{
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TRY(Core::System::pledge("stdio rpath"));
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Core::ArgsParser args_parser;
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StringView path;
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bool autoskip = false;
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bool c_include_file_style = false;
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bool capitalize_c_include_file_style = false;
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bool binary_digit_formatting = false;
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bool little_endian_hexdump = false;
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bool offset_in_decimal = false;
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bool plain_hexdump_style = false;
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bool uppercase_hex = false;
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bool revert = false;
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Optional<size_t> line_length_option;
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Optional<size_t> group_size_option;
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Optional<size_t> max_bytes;
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Optional<size_t> position_offset;
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Optional<off_t> seek_to;
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String c_include_file_style_variable_name;
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StringView colorize_output_option;
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args_parser.add_positional_argument(path, "Input file", "input", Core::ArgsParser::Required::No);
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args_parser.add_option(autoskip, "Replace nul-lines with '*'", "autoskip", 'a');
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args_parser.add_option(binary_digit_formatting, "Binary digit formatting", "bits", 'b');
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args_parser.add_option(capitalize_c_include_file_style, "Capitalize C include file style (-i).", "capitalize", 'C');
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args_parser.add_option(line_length_option, "Amount of bytes shown per line (max 256)", "cols", 'c', "cols");
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args_parser.add_option(offset_in_decimal, "Show file offset in decimal", "decimal", 'd');
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args_parser.add_option(little_endian_hexdump, "Little-endian hex dump", nullptr, 'e');
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args_parser.add_option(group_size_option, "Separate the output of every amount bytes", "groupsize", 'g', "amount");
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args_parser.add_option(c_include_file_style, "Output in C include file style", "include", 'i');
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args_parser.add_option(max_bytes, "Truncate to fixed number of bytes", "len", 'l', "bytes");
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args_parser.add_option(c_include_file_style_variable_name, "Set variable name used in C include ouput (-i)", "name", 'n', "include_style");
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args_parser.add_option(position_offset, "Add offset to displayed file position", nullptr, 'o', "offset");
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args_parser.add_option(plain_hexdump_style, "Output in plain hex dump style", "plain", 'p');
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args_parser.add_option(revert, "Patch hex dump into binary", "revert", 'r');
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args_parser.add_option(colorize_output_option, "Colorize output", nullptr, 'R', "when");
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args_parser.add_option(seek_to, "Seek to a byte offset", "seek", 's', "[-]offset");
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args_parser.add_option(uppercase_hex, "Use upper case hex letters", nullptr, 'u');
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args_parser.parse(args);
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auto file = TRY(Core::File::open_file_or_standard_stream(path, Core::File::OpenMode::Read));
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auto display_style = DisplayStyle::Hex;
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size_t line_length_config = BYTES_PER_LINE_HEX;
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size_t group_size = GROUP_SIZE_HEX;
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auto formatting_options_provided = 0x0;
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if (c_include_file_style) {
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formatting_options_provided++;
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display_style = DisplayStyle::CStyle;
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line_length_config = BYTES_PER_LINE_C;
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if (c_include_file_style_variable_name.is_empty()) {
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c_include_file_style_variable_name = TRY(path_to_variable_name(path));
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}
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if (capitalize_c_include_file_style) {
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c_include_file_style_variable_name = TRY(c_include_file_style_variable_name.to_uppercase());
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}
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if (file->fd() != STDIN_FILENO) {
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outln("unsigned char {}[] = {{", c_include_file_style_variable_name);
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}
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}
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if (little_endian_hexdump) {
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formatting_options_provided++;
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display_style = DisplayStyle::HexLittleEndian;
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group_size = GROUP_SIZE_HEX_LITTLE_ENDIAN;
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}
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if (plain_hexdump_style) {
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formatting_options_provided++;
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display_style = DisplayStyle::PlainHex;
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line_length_config = BYTES_PER_LINE_PLAIN_HEX;
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group_size = GROUP_SIZE_PLAIN_HEX;
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}
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if (binary_digit_formatting) {
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formatting_options_provided++;
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display_style = DisplayStyle::Bits;
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group_size = GROUP_SIZE_BITS;
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line_length_config = BYTES_PER_LINE_BITS;
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}
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if (formatting_options_provided > 1) {
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warnln("Only one of the following flags can be used at a time: -i, -e, -p, -b");
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return 1;
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}
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if (line_length_option.has_value() && line_length_option.value() > 0) {
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line_length_config = line_length_option.value();
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if (line_length_config > BYTES_PER_LINE_MAX && !plain_hexdump_style) {
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warnln("Invalid number of columns (max is 256).");
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return 1;
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}
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}
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if (group_size_option.has_value()) {
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group_size = group_size_option.value();
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if (little_endian_hexdump) {
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if (group_size != 0 && !is_power_of_two(group_size)) {
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warnln("Group size must be a power of 2 with -e");
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return 1;
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}
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}
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}
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// TODO: colorize output
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if (!colorize_output_option.is_null()) {
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warnln("Colorizing output is not supported");
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}
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if (revert) {
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warnln("Patching is not supported");
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return 1;
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}
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Array<u8, BUFSIZ> contents;
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Bytes bytes;
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size_t total_bytes_read = 0x0;
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const size_t max_read_size = contents.size() - (contents.size() % line_length_config);
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bool is_input_remaining = true;
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// TODO: seek relative to current stdin file position
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if (seek_to.has_value()) {
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auto file_size = 0x0;
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if (auto size = file->size(); !size.is_error()) {
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file_size = size.value();
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}
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auto offset = seek_to.value();
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total_bytes_read = offset < 0 ? file_size + offset : offset;
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TRY(file->seek(total_bytes_read, SeekMode::SetPosition));
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}
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while (is_input_remaining) {
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auto bytes_to_read = max_read_size - bytes.size();
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bytes = contents.span().slice(0, bytes_to_read);
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bytes = TRY(file->read_some(bytes));
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if (bytes.size() < bytes_to_read && file->fd() != STDIN_FILENO) {
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is_input_remaining = false;
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}
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while (bytes.size() > 0) {
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auto line_length = bytes.size() > line_length_config ? line_length_config : bytes.size();
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if (max_bytes.has_value()) {
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auto bytes_remaining = max_bytes.value() - total_bytes_read;
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if (bytes_remaining < line_length) {
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line_length = bytes_remaining;
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}
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}
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auto current_line = bytes.slice(0, line_length);
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bytes = bytes.slice(line_length);
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if (autoskip && all_of(bytes, [](auto& b) { return b == 0x0; })) {
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outln("*");
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continue;
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}
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if (display_style != DisplayStyle::CStyle && display_style != DisplayStyle::PlainHex) {
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auto offset = 0;
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if (position_offset.has_value()) {
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offset = position_offset.value();
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}
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if (offset_in_decimal) {
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out("{:08}: ", total_bytes_read + offset);
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} else {
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out("{:08x}: ", total_bytes_read + offset);
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}
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}
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switch (display_style) {
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case DisplayStyle::Hex:
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print_line_hex(current_line, line_length_config, group_size, uppercase_hex);
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print_ascii(current_line);
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break;
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case DisplayStyle::PlainHex:
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print_line_hex(current_line, line_length_config, group_size, uppercase_hex);
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break;
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case DisplayStyle::HexLittleEndian:
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print_line_little_endian_hex(current_line, line_length_config, group_size, uppercase_hex);
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print_ascii(current_line);
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break;
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case DisplayStyle::Bits:
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print_line_bits(current_line, line_length_config, group_size);
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print_ascii(current_line);
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break;
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case DisplayStyle::CStyle:
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print_line_c_style(current_line);
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break;
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}
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putchar('\n');
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total_bytes_read += line_length;
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if (max_bytes.has_value() && total_bytes_read >= max_bytes.value()) {
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is_input_remaining = false;
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break;
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}
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}
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}
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if (display_style == DisplayStyle::CStyle) {
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outln("}};");
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auto postfix = capitalize_c_include_file_style ? "LEN" : "len";
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outln("unsigned int {}_{} = {};", c_include_file_style_variable_name, postfix, total_bytes_read);
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}
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return 0;
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}
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