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hexdump: Add an option to specify dump offset

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This is very helpful when trying to make sense of large binary files :^)
This commit is contained in:
Arda Cinar 2023-01-15 11:58:58 +03:00 committed by Andreas Kling
parent db27499865
commit 70da5f977b
Notes: sideshowbarker 2024-07-17 16:23:55 +09:00 
Author: https://github.com/kuzux
Commit: https://github.com/SerenityOS/serenity/commit/70da5f977b
Pull-request: https://github.com/SerenityOS/serenity/pull/17027
1 changed files with 4 additions and 1 deletions
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5
Userland/Utilities/hexdump.cpp
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@ -29,14 +29,17 @@ ErrorOr<int> serenity_main(Main::Arguments args)
StringView path;
bool verbose = false;
Optional<size_t> max_bytes;
Optional<size_t> seek_to;
args_parser.add_positional_argument(path, "Input", "input", Core::ArgsParser::Required::No);
args_parser.add_option(verbose, "Display all input data", "verbose", 'v');
args_parser.add_option(max_bytes, "Truncate to a fixed number of bytes", nullptr, 'n', "bytes");
args_parser.add_option(seek_to, "Seek to a byte offset", "seek", 's', "offset");
args_parser.parse(args);
auto file = TRY(Core::Stream::File::open_file_or_standard_stream(path, Core::Stream::OpenMode::Read));
if (seek_to.has_value())
TRY(file->seek(seek_to.value(), Core::Stream::SeekMode::SetPosition));
auto print_line = [](Bytes line) {
VERIFY(line.size() <= LINE_LENGTH_BYTES);