ladybird/Userland/BuggieBox/main.cpp
2023-09-17 16:49:35 +03:30

137 lines
4.4 KiB
C++

/*
* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
* Copyright (c) 2022, Tim Schumacher <timschumi@gmx.de>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/LexicalPath.h>
#include <LibMain/Main.h>
#include <Userland/Shell/Shell.h>
#define ENUMERATE_UTILITIES(E, ALIAS) \
ALIAS(b2sum, checksum) \
E(cat) \
E(checksum) \
E(chmod) \
E(chown) \
E(cp) \
E(df) \
E(env) \
E(file) \
E(find) \
E(id) \
E(less) \
E(ln) \
E(ls) \
E(lsblk) \
ALIAS(md5sum, checksum) \
E(mkdir) \
E(mknod) \
E(mount) \
E(mv) \
E(ps) \
E(rm) \
E(rmdir) \
E(sh) \
ALIAS(sha1sum, checksum) \
ALIAS(sha256sum, checksum) \
ALIAS(sha512sum, checksum) \
ALIAS(Shell, sh) \
E(tail) \
E(tree) \
E(umount) \
E(uname) \
E(uniq)
// Declare the entrypoints of all the tools that we delegate to.
// Some tools have additional aliases that we skip in the declarations.
// Relying on `decltype(serenity_main)` ensures that we always stay consistent with the `serenity_main` signature.
#define DECLARE_ENTRYPOINT(name) decltype(serenity_main) name##_main;
#define SKIP(alias, name)
ENUMERATE_UTILITIES(DECLARE_ENTRYPOINT, SKIP)
#undef DECLARE_ENTRYPOINT
#undef SKIP
static void fail()
{
#define TOOL_NAME(name) #name##sv,
#define ALIAS_NAME(alias, name) #alias##sv,
auto const tool_names = {
ENUMERATE_UTILITIES(TOOL_NAME, ALIAS_NAME)
};
#undef TOOL_NAME
#undef ALIAS_NAME
outln(stderr);
outln(stderr, "Usage:");
outln(stderr, "* Specify a utility as an argument:");
outln(stderr, " $ BuggieBox UTILITY");
outln(stderr, "* Create a symbolic link with the target being this binary,");
outln(stderr, " and ensure the basename is one of the supported utilities' name.");
outln(stderr);
outln(stderr, "The following utilities are supported:");
int count = 0;
for (auto const& tool_name : tool_names) {
if (++count % 5 == 1)
out(stderr, "\n\t");
out(stderr, "{:12}", tool_name);
}
outln(stderr);
}
struct Runner {
StringView name;
ErrorOr<int> (*func)(Main::Arguments arguments) = nullptr;
};
static constexpr Runner s_runners[] = {
#define RUNNER_ENTRY(name) { #name##sv, name##_main },
#define ALIAS_RUNNER_ENTRY(alias, name) { #alias##sv, name##_main },
ENUMERATE_UTILITIES(RUNNER_ENTRY, ALIAS_RUNNER_ENTRY)
#undef RUNNER_ENTRY
#undef ALIAS_RUNNER_ENTRY
};
static ErrorOr<int> run_program(Main::Arguments arguments, LexicalPath const& runbase, bool& found_runner)
{
for (auto& runner : s_runners) {
if (runbase.basename() == runner.name) {
found_runner = true;
return runner.func(arguments);
}
}
return 0;
}
static ErrorOr<int> buggiebox_main(Main::Arguments arguments)
{
if (arguments.argc == 0) {
outln(stderr, "Detected directly running BuggieBox without specifying a utility.");
fail();
return 1;
}
bool found_runner = false;
LexicalPath runbase { arguments.strings[0] };
auto result = TRY(run_program(arguments, runbase, found_runner));
if (!found_runner) {
outln(stderr, "'{}' is not supported by BuggieBox.", runbase);
fail();
}
return result;
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
LexicalPath runbase { arguments.strings[0] };
if (runbase.basename() == "BuggieBox"sv) {
Main::Arguments utility_arguments = arguments;
utility_arguments.argc--;
utility_arguments.argv++;
utility_arguments.strings = arguments.strings.slice(1);
return buggiebox_main(utility_arguments);
}
return buggiebox_main(arguments);
}