GIOChannel based command system example

.gitignore

*.o
*~
command

main.c

/*!
 * \file main.c
 * \brief
 */


#include <glib.h>
#include <glib/gprintf.h>
#include <gio/gio.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>


static void
prompt ()
{
    g_printf ("myprompt> ");
}


static void
handlecommand (gchar *sz)
{
    g_printf ("You typed: %s", sz);
    prompt();
}


static gboolean
mycallback (GIOChannel *channel, GIOCondition cond, gpointer data)
{
    gchar *str_return;
    gsize length;
    gsize terminator_pos;
    GError *error = NULL;

    if (g_io_channel_read_line (channel, &str_return, &length, &terminator_pos, &error) == G_IO_STATUS_ERROR)
    {
        g_warning ("Something went wrong");
    }
    if (error != NULL)
    {
        g_printf (error->message);
        exit(1);
    }
    handlecommand (str_return);
    g_free( str_return );
    return TRUE;
}


int
main (int argc, char* argv[])
{
    GError **error = NULL;

    GMainLoop *mainloop = g_main_loop_new (NULL, FALSE);	
#ifdef G_OS_WIN32
    GIOChannel *channel = g_io_channel_win32_new_fd (STDIN_FILENO);
#else
    GIOChannel *channel = g_io_channel_unix_new (STDIN_FILENO);
#endif
    g_io_channel_set_encoding (channel, NULL, error);
    prompt ();
    g_io_add_watch (channel, G_IO_IN, mycallback, NULL);
    g_main_loop_run (mainloop);
    return 0;
}


/* EOF */

Makefile

CFLAGS = -Wall -g `pkg-config --cflags --libs gio-2.0 gtk+-2.0`
LDFLAGS = `pkg-config --cflags --libs gio-2.0 gtk+-2.0`

all: \
	command

command: main.c
	$(CC) -o command main.c $(CFLAGS)

clean:
	rm -f *~
	rm -f *.o
	rm -f command

Thanks for posting this example.