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Do not close stderr/stdout before program finish

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Programs like grep called in '$' command will fail due to SIGPIPE
for example. So we need to keep the pipe open.
This commit is contained in:
Maxime Coste 2015-06-08 22:42:51 +01:00
parent 6cb7e20d54
commit 409d804ee8
6 changed files with 18 additions and 17 deletions
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2
src/command_manager.cc
View File

@ -271,7 +271,7 @@ String expand_token(const Token& token, const Context& context,
{
case Token::Type::ShellExpand:
return ShellManager::instance().eval(content, context, {},
ShellManager::Flags::ReadOutput,
ShellManager::Flags::WaitForStdout,
shell_params, env_vars).first;
case Token::Type::RegisterExpand:
return context.main_sel_register_value(content).str();

2
src/commands.cc
View File

@ -787,7 +787,7 @@ void define_command(const ParametersParser& parser, Context& context)
{ "pos_in_token", to_string(pos_in_token) }
};
String output = ShellManager::instance().eval(shell_cmd, context, {},
ShellManager::Flags::ReadOutput,
ShellManager::Flags::WaitForStdout,
params, vars).first;
return Completions{ 0_byte, pos_in_token, split(output, '\n', 0) };
};

7
src/event_manager.cc
View File

@ -25,8 +25,11 @@ void FDWatcher::run(EventMode mode)
void FDWatcher::close_fd()
{
close(m_fd);
m_fd = -1;
if (m_fd != -1)
{
close(m_fd);
m_fd = -1;
}
}
Timer::Timer(TimePoint date, Callback callback, EventMode mode)

4
src/normal.cc
View File

@ -396,7 +396,7 @@ void pipe(Context& context, NormalParams)
str += '\n';
str = ShellManager::instance().eval(
real_cmd, context, str,
ShellManager::Flags::ReadOutput,
ShellManager::Flags::WaitForStdout,
{}, EnvVarMap{}).first;
if ((insert_eol or sel.max() == buffer.back_coord()) and
@ -441,7 +441,7 @@ void insert_output(Context& context, NormalParams)
return;
auto str = ShellManager::instance().eval(real_cmd, context, {},
ShellManager::Flags::ReadOutput,
ShellManager::Flags::WaitForStdout,
{}, EnvVarMap{}).first;
ScopedEdition edition(context);
context.selections().insert(str, mode);

16
src/shell_manager.cc
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@ -60,20 +60,18 @@ std::pair<String, int> ShellManager::eval(
FDWatcher stdout_watcher{read_pipe[0], pipe_reader(child_stdout)};
FDWatcher stderr_watcher{error_pipe[0], pipe_reader(child_stderr)};
if (not (flags & Flags::ReadOutput))
{
stdout_watcher.close_fd();
stderr_watcher.close_fd();
}
while (not stdout_watcher.closed() or
not stderr_watcher.closed() or
not terminated)
while (not terminated or
((flags & Flags::WaitForStdout) and
(not stdout_watcher.closed() or
not stderr_watcher.closed())))
{
EventManager::instance().handle_next_events(EventMode::Urgent);
if (not terminated)
terminated = waitpid(pid, &status, WNOHANG);
}
stdout_watcher.close_fd();
stderr_watcher.close_fd();
}
if (not child_stderr.empty())

4
src/shell_manager.hh
View File

@ -24,12 +24,12 @@ public:
enum class Flags
{
None = 0,
ReadOutput = 1
WaitForStdout = 1
};
std::pair<String, int> eval(StringView cmdline, const Context& context,
StringView input = {},
Flags flags = Flags::ReadOutput,
Flags flags = Flags::WaitForStdout,
ConstArrayView<String> params = {},
const EnvVarMap& env_vars = EnvVarMap{});