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Shell: Add the POSIX-only 'eval' builtin

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This just concatenates its arguments together, and executes it as a
command.
This commit is contained in:
Ali Mohammad Pur 2023-09-21 02:31:23 +03:30 • committed by Jelle Raaijmakers
parent e2af20a69b
commit 21ea9cedff
Notes: sideshowbarker 2024-07-17 02:55:44 +09:00
2 changed files with 26 additions and 0 deletions
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25
Userland/Shell/Builtin.cpp
View file

@ -540,6 +540,31 @@ ErrorOr<int> Shell::builtin_dirs(Main::Arguments arguments)
return 0;
}
ErrorOr<int> Shell::builtin_eval(Main::Arguments arguments)
{
if (!m_in_posix_mode) {
warnln("eval: This shell is not in POSIX mode");
return 1;
}
StringBuilder joined_arguments;
for (size_t i = 1; i < arguments.strings.size(); ++i) {
if (i != 1)
joined_arguments.append(' ');
joined_arguments.append(arguments.strings[i]);
}
auto result = Posix::Parser { TRY(joined_arguments.to_string()) }.parse();
if (!result)
return 1;
auto value = TRY(result->run(*this));
if (value && value->is_job())
block_on_job(static_cast<AST::JobValue*>(value.ptr())->job());
return last_return_code.value_or(0);
}
ErrorOr<int> Shell::builtin_exec(Main::Arguments arguments)
{
if (arguments.strings.size() < 2) {

1
Userland/Shell/Shell.h
View file

@ -32,6 +32,7 @@
__ENUMERATE_SHELL_BUILTIN(pwd, InAllModes) \
__ENUMERATE_SHELL_BUILTIN(type, InAllModes) \
__ENUMERATE_SHELL_BUILTIN(exec, InAllModes) \
__ENUMERATE_SHELL_BUILTIN(eval, OnlyInPOSIXMode) \
__ENUMERATE_SHELL_BUILTIN(exit, InAllModes) \
__ENUMERATE_SHELL_BUILTIN(export, InAllModes) \
__ENUMERATE_SHELL_BUILTIN(glob, InAllModes) \