Support redirecting ExternalTask's stdin/stdout from/to a file

[builder.git] / source / externaltask.cpp

diff --git a/source/externaltask.cpp b/source/externaltask.cpp
index 3cc8eca394572aa4b1af9b5a621fdae8c6b97238..257d1318fb22a42d31a5e2ed04e95424cb0a80ae 100644 (file)
--- a/source/externaltask.cpp
+++ b/source/externaltask.cpp
@@ -16,8 +16,8 @@ ExternalTask::ExternalTask(const Arguments &a, const FS::Path &wd):
        work_dir(wd),
        process(0),
        exit_code(-1),
-       stdout_dest(PASSTHROUGH),
-       stderr_dest(PASSTHROUGH),
+       stdout_action(PASSTHROUGH),
+       stderr_action(PASSTHROUGH),
        capture_pipe(0)
 {
        if(argv.empty())
@@ -45,35 +45,61 @@ string ExternalTask::get_command() const
                }
        }
 
+       if(!stdin_file.empty())
+       {
+               cmd += " <";
+               cmd += stdin_file.str();
+       }
+
+       if(stdout_action==REDIRECT)
+       {
+               cmd += " >";
+               cmd += stdout_file.str();
+       }
+
        return cmd;
 }
 
 void ExternalTask::start()
 {
        IO::File *devnull = 0;
+       IO::File *infile = 0;
+       IO::File *outfile = 0;
 
        prepare();
 
        process = new Process;
 
-       if(stdout_dest==IGNORE || stderr_dest==IGNORE)
+       if(stdout_action==IGNORE || stderr_action==IGNORE)
        {
                devnull = new IO::File("/dev/null", IO::M_WRITE);
-               if(stdout_dest==IGNORE)
+               if(stdout_action==IGNORE)
                        process->redirect_cout(*devnull);
-               if(stderr_dest==IGNORE)
+               if(stderr_action==IGNORE)
                        process->redirect_cerr(*devnull);
        }
 
-       if(stdout_dest==CAPTURE || stderr_dest==CAPTURE)
+       if(stdout_action==REDIRECT)
+       {
+               outfile = new IO::File((work_dir/stdout_file).str(), IO::M_WRITE);
+               process->redirect_cout(*outfile);
+       }
+
+       if(stdout_action==CAPTURE || stderr_action==CAPTURE)
        {
                capture_pipe = new IO::Pipe;
-               if(stdout_dest==CAPTURE)
+               if(stdout_action==CAPTURE)
                        process->redirect_cout(*capture_pipe);
-               if(stderr_dest==CAPTURE)
+               if(stderr_action==CAPTURE)
                        process->redirect_cerr(*capture_pipe);
        }
 
+       if(!stdin_file.empty())
+       {
+               infile = new IO::File((work_dir/stdin_file).str());
+               process->redirect_cin(*infile);
+       }
+
        if(!work_dir.empty())
                process->set_working_directory(work_dir);
 
@@ -83,6 +109,8 @@ void ExternalTask::start()
                capture_pipe->set_mode(IO::M_READ);
 
        delete devnull;
+       delete infile;
+       delete outfile;
 }
 
 Task::Status ExternalTask::check()
@@ -126,14 +154,29 @@ Task::Status ExternalTask::do_wait(bool block)
        return exit_code ? ERROR : SUCCESS;
 }
 
-void ExternalTask::set_stdout(Destination d)
+void ExternalTask::set_stdin(const FS::Path &f)
+{
+       stdin_file = f;
+}
+
+void ExternalTask::set_stdout(StreamAction a)
+{
+       if(a==REDIRECT)
+               throw invalid_argument("ExternalTask::set_stdout");
+       stdout_action = a;
+}
+
+void ExternalTask::set_stdout(const FS::Path &f)
 {
-       stdout_dest = d;
+       stdout_action = REDIRECT;
+       stdout_file = f;
 }
 
-void ExternalTask::set_stderr(Destination d)
+void ExternalTask::set_stderr(StreamAction a)
 {
-       stderr_dest = d;
+       if(a==REDIRECT)
+               throw invalid_argument("ExternalTask::set_stdout");
+       stderr_action = a;
 }
 
 string ExternalTask::run_and_capture_output(const Arguments &argv, const FS::Path &wd)