Use SystemExec for post-export hook

Use the new command-line parsing constructor for SystemExec to construct
the args array for the post-export hook from the entered command string,
with some simple substitutions for filename, directory, &c.

3 files changed, 45 insertions, 8 deletions

diff --git a/gtk2_ardour/export_format_dialog.cc b/gtk2_ardour/export_format_dialog.cc
index a05a6e549a..0e2da53cfd 100644
--- a/gtk2_ardour/export_format_dialog.cc
+++ b/gtk2_ardour/export_format_dialog.cc
@@ -52,7 +52,7 @@ ExportFormatDialog::ExportFormatDialog (FormatPtr format, bool new_dialog) :
   silence_end_clock ("silence_end", true, "", true, false, true),
 
   upload_checkbox(_("Upload to Soundcloud")),
-  command_label(_("Command to run post-export (%1=full path & filename, %2=directory, %3=basename):")),
+  command_label(_("Command to run post-export\n(%f=full path & filename, %d=directory, %b=basename, %u=username, %p=password):")),
 
   format_table (3, 4),
   compatibility_label (_("Compatibility"), Gtk::ALIGN_LEFT),
diff --git a/libs/ardour/ardour/export_handler.h b/libs/ardour/ardour/export_handler.h
index 7f667d2dee..e2c0a7b2b7 100644
--- a/libs/ardour/ardour/export_handler.h
+++ b/libs/ardour/ardour/export_handler.h
@@ -95,6 +95,8 @@ class ExportHandler : public ExportElementFactory, public sigc::trackable
 	friend boost::shared_ptr<ExportHandler> Session::get_export_handler();
 	ExportHandler (Session & session);
 
+	void command_output(std::string output, size_t size);
+
   public:
 	~ExportHandler ();
 
diff --git a/libs/ardour/export_handler.cc b/libs/ardour/export_handler.cc
index 042edaf788..f2fb895b91 100644
--- a/libs/ardour/export_handler.cc
+++ b/libs/ardour/export_handler.cc
@@ -34,6 +34,7 @@
 #include "ardour/soundcloud_upload.h"
 #include "pbd/openuri.h"
 #include "pbd/basename.h"
+#include "pbd/system_exec.h"
 
 #include "i18n.h"
 
@@ -278,6 +279,13 @@ ExportHandler::process_normalize ()
 }
 
 void
+ExportHandler::command_output(std::string output, size_t size)
+{
+	std::cerr << "command: " << size << ", " << output << std::endl;
+	info << output << endmsg;
+}
+
+void
 ExportHandler::finish_timespan ()
 {
 	while (config_map.begin() != timespan_bounds.second) {
@@ -294,13 +302,40 @@ ExportHandler::finish_timespan ()
 		}
 
 		if (!fmt->command().empty()) {
-			std::string command = string_compose(fmt->command(),
-					filepath,
-					Glib::path_get_dirname(filepath),
-					PBD::basename_nosuffix(filepath)
-					);
-			std::cerr << "running command: " << command << "..." << std::endl;
-			system(command.c_str());
+
+#if 0			// would be nicer with C++11 initialiser...
+			std::map<char, std::string> subs {
+				{ 'f', filepath },
+				{ 'd', Glib::path_get_dirname(filepath) },
+				{ 'b', PBD::basename_nosuffix(filepath) },
+				{ 'u', upload_username },
+				{ 'p', upload_password}
+			};
+#endif
+
+			PBD::ScopedConnection command_connection;
+			std::map<char, std::string> subs;
+			subs.insert (std::pair<char, std::string> ('f', filepath));
+			subs.insert (std::pair<char, std::string> ('d', Glib::path_get_dirname(filepath)));
+			subs.insert (std::pair<char, std::string> ('b', PBD::basename_nosuffix(filepath)));
+			subs.insert (std::pair<char, std::string> ('u', upload_username));
+			subs.insert (std::pair<char, std::string> ('p', upload_password));
+
+
+			std::cerr << "running command: " << fmt->command() << "..." << std::endl;
+			SystemExec *se = new SystemExec(fmt->command(), subs);
+			se->ReadStdout.connect_same_thread(command_connection, boost::bind(&ExportHandler::command_output, this, _1, _2));
+			if (se->start (2) == 0) {
+				// successfully started
+				std::cerr << "started!" << std::endl;
+				while (se->is_running ()) {
+					// wait for system exec to terminate
+					// std::cerr << "waiting..." << std::endl;
+					usleep (1000);
+				}
+			}
+			std::cerr << "done! deleting..." << std::endl;
+			delete (se);
 		}
 
 		if (fmt->upload()) {