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base64.cpp
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base64.cpp
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/*
* Copyright (c) 2020, Tom Lebreux <[email protected]>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Base64.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibCore/MappedFile.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
static void print_wrapped_output(size_t column, StringView encoded)
{
VERIFY(column > 0);
while (!encoded.is_empty()) {
auto segment_length = min(column, encoded.length());
outln("{}", encoded.substring_view(0, segment_length));
encoded = encoded.substring_view(segment_length);
}
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio rpath"));
bool decode = false;
Optional<size_t> maybe_column;
StringView filepath = {};
Core::ArgsParser args_parser;
args_parser.add_option(decode, "Decode data", "decode", 'd');
args_parser.add_option(maybe_column, "When encoding, wrap output after column characters", "wrap", 'w', "column");
args_parser.add_positional_argument(filepath, "", "file", Core::ArgsParser::Required::No);
args_parser.parse(arguments);
Variant<Empty, ByteBuffer, NonnullOwnPtr<Core::MappedFile>> buffer_or_file;
ReadonlyBytes input_bytes;
if (filepath.is_empty() || filepath == "-"sv) {
auto file = TRY(Core::File::standard_input());
buffer_or_file = TRY(file->read_until_eof());
input_bytes = buffer_or_file.get<ByteBuffer>();
} else if (TRY(Core::System::stat(filepath)).st_size > 0) {
buffer_or_file = TRY(Core::MappedFile::map(filepath));
input_bytes = buffer_or_file.get<NonnullOwnPtr<Core::MappedFile>>()->bytes();
}
TRY(Core::System::pledge("stdio"));
if (decode) {
auto decoded = TRY(decode_base64(input_bytes));
out("{}", StringView(decoded.bytes()));
return 0;
}
auto encoded = TRY(encode_base64(input_bytes));
if (maybe_column.has_value() && *maybe_column > 0) {
print_wrapped_output(*maybe_column, encoded);
return 0;
}
outln("{}", encoded);
return 0;
}