implemented EC command (execute operating system command) in spawn.cpp

powerful command for filtering a SciTECO buffer through an external
program. It will be described in the sciteco(7) man pages.
The implementation uses an asynchronous background process with
pipes but is platform independant thanks to glib's g_spawn functions,
GIOChannels and event loops.
There are however platform differences in how the operating system
command is interpreted/parsed.

1 files changed, 56 insertions, 0 deletions

diff --git a/src/spawn.h b/src/spawn.h
new file mode 100644
index 0000000..b6cb298
--- /dev/null
+++ b/src/spawn.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2012-2014 Robin Haberkorn
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SPAWN_H
+#define __SPAWN_H
+
+#include <glib.h>
+
+#include "sciteco.h"
+#include "parser.h"
+
+gchar **parse_shell_command_line(const gchar *cmdline, GError **error);
+
+class StateExecuteCommand : public StateExpectString {
+public:
+	StateExecuteCommand();
+	~StateExecuteCommand();
+
+	struct Context {
+		GMainContext *mainctx;
+		GMainLoop *mainloop;
+		GSource *child_src;
+		GSource *stdin_src, *stdout_src;
+
+		tecoInt from, to;
+		tecoInt start;
+		bool text_added;
+		::GError *error;
+	};
+
+private:
+	Context ctx;
+
+	void initial(void);
+	State *done(const gchar *str);
+};
+
+namespace States {
+	extern StateExecuteCommand	executecommand;
+}
+
+#endif