Improve ExternalTask::run_and_capture_output

[builder.git] / source / externaltask.cpp

diff --git a/source/externaltask.cpp b/source/externaltask.cpp
index 257d1318fb22a42d31a5e2ed04e95424cb0a80ae..e4dfdc2ef9566122042d6ad430595acb1488f6b0 100644 (file)
--- a/source/externaltask.cpp
+++ b/source/externaltask.cpp
@@ -16,6 +16,7 @@ ExternalTask::ExternalTask(const Arguments &a, const FS::Path &wd):
        work_dir(wd),
        process(0),
        exit_code(-1),
+       stdin_action(PASSTHROUGH),
        stdout_action(PASSTHROUGH),
        stderr_action(PASSTHROUGH),
        capture_pipe(0)
@@ -45,7 +46,7 @@ string ExternalTask::get_command() const
                }
        }
 
-       if(!stdin_file.empty())
+       if(stdin_action==REDIRECT)
        {
                cmd += " <";
                cmd += stdin_file.str();
@@ -70,9 +71,11 @@ void ExternalTask::start()
 
        process = new Process;
 
-       if(stdout_action==IGNORE || stderr_action==IGNORE)
+       if(stdin_action==IGNORE || stdout_action==IGNORE || stderr_action==IGNORE)
        {
-               devnull = new IO::File("/dev/null", IO::M_WRITE);
+               devnull = new IO::File("/dev/null", IO::M_RDWR);
+               if(stdin_action==IGNORE)
+                       process->redirect_cin(*devnull);
                if(stdout_action==IGNORE)
                        process->redirect_cout(*devnull);
                if(stderr_action==IGNORE)
@@ -94,7 +97,7 @@ void ExternalTask::start()
                        process->redirect_cerr(*capture_pipe);
        }
 
-       if(!stdin_file.empty())
+       if(stdin_action==REDIRECT)
        {
                infile = new IO::File((work_dir/stdin_file).str());
                process->redirect_cin(*infile);
@@ -156,6 +159,7 @@ Task::Status ExternalTask::do_wait(bool block)
 
 void ExternalTask::set_stdin(const FS::Path &f)
 {
+       stdin_action = REDIRECT;
        stdin_file = f;
 }
 
@@ -179,11 +183,12 @@ void ExternalTask::set_stderr(StreamAction a)
        stderr_action = a;
 }
 
-string ExternalTask::run_and_capture_output(const Arguments &argv, const FS::Path &wd)
+string ExternalTask::run_and_capture_output(const Arguments &argv, const FS::Path &wd, bool capture_stderr)
 {
        ExternalTask task(argv, wd);
+       task.stdin_action = IGNORE;
        task.set_stdout(CAPTURE);
-       task.set_stderr(IGNORE);
+       task.set_stderr(capture_stderr ? CAPTURE : IGNORE);
        task.start();
        if(task.wait()!=SUCCESS)
                throw runtime_error(format("%s failed", argv.front()));