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LibCore: Migrate Command from Deprecated{File,String}

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This gives us free error-propagation in Core::command(...) and
HackStudio::ProjectBuilder::for_each_library_dependencies.

The comment about "String will be in the null state" has been misleading
for a long time, so it is removed.
This commit is contained in:
Ben Wiederhake 2023-05-13 18:55:15 +02:00 • committed by Jelle Raaijmakers
parent 07dd719e3e
commit f9a24eb7eb
4 changed files with 16 additions and 20 deletions
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17
Userland/Libraries/LibCore/Command.cpp
View file

@ -7,7 +7,7 @@
#include "Command.h"
#include <AK/Format.h>
#include <AK/ScopeGuard.h>
#include <LibCore/DeprecatedFile.h>
#include <LibCore/File.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/wait.h>
@ -72,16 +72,13 @@ ErrorOr<CommandResult> command(DeprecatedString const& program, Vector<Deprecate
close(stdout_pipe[1]);
close(stderr_pipe[1]);
auto read_all_from_pipe = [](int pipe[2]) {
auto result_file = Core::DeprecatedFile::construct();
if (!result_file->open(pipe[0], Core::OpenMode::ReadOnly, Core::DeprecatedFile::ShouldCloseFileDescriptor::Yes)) {
perror("open");
VERIFY_NOT_REACHED();
}
return DeprecatedString::copy(result_file->read_all());
auto read_all_from_pipe = [](int pipe[2]) -> ErrorOr<ByteBuffer> {
auto result_file_or_error = Core::File::adopt_fd(pipe[0], Core::File::OpenMode::Read, Core::File::ShouldCloseFileDescriptor::Yes);
auto result_file = TRY(result_file_or_error);
return result_file->read_until_eof();
};
auto output = read_all_from_pipe(stdout_pipe);
auto error = read_all_from_pipe(stderr_pipe);
auto output = TRY(read_all_from_pipe(stdout_pipe));
auto error = TRY(read_all_from_pipe(stderr_pipe));
int wstatus { 0 };
waitpid(pid, &wstatus, 0);

9
Userland/Libraries/LibCore/Command.h
View file

@ -6,19 +6,18 @@
#pragma once
#include <AK/DeprecatedString.h>
#include <AK/ByteBuffer.h>
#include <AK/LexicalPath.h>
#include <AK/Optional.h>
#include <AK/String.h>
#include <spawn.h>
namespace Core {
// If the executed command fails, the returned String will be in the null state.
struct CommandResult {
int exit_code { 0 };
DeprecatedString output;
DeprecatedString error;
ByteBuffer output;
ByteBuffer error;
};
ErrorOr<CommandResult> command(DeprecatedString const& program, Vector<DeprecatedString> const& arguments, Optional<LexicalPath> chdir);