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Shell: Add the `wait' builtin

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This builtin...waits...for the jobs it's given (or all the existing
jobs).
This commit is contained in:
AnotherTest 2020-10-26 20:30:14 +03:30 • committed by Andreas Kling
parent 607931268e
commit 71bb62d03c
2 changed files with 40 additions and 1 deletions
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38
Shell/Builtin.cpp
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@ -743,6 +743,44 @@ int Shell::builtin_umask(int argc, const char** argv)
return 1;
}
int Shell::builtin_wait(int argc, const char** argv)
{
Vector<const char*> job_ids;
Core::ArgsParser parser;
parser.add_positional_argument(job_ids, "Job IDs to wait for, defaults to all jobs if missing", "jobs", Core::ArgsParser::Required::No);
if (!parser.parse(argc, const_cast<char**>(argv), false))
return 1;
Vector<NonnullRefPtr<Job>> jobs_to_wait_for;
if (job_ids.is_empty()) {
for (auto it : jobs)
jobs_to_wait_for.append(it.value);
} else {
for (String id_s : job_ids) {
auto id_opt = id_s.to_uint();
if (id_opt.has_value()) {
if (auto job = find_job(id_opt.value())) {
jobs_to_wait_for.append(*job);
continue;
}
}
warnln("wait: invalid or nonexistent job id {}", id_s);
return 1;
}
}
for (auto& job : jobs_to_wait_for) {
job->set_running_in_background(false);
block_on_job(job);
}
return 0;
}
int Shell::builtin_unset(int argc, const char** argv)
{
Vector<const char*> vars;