source: trunk/third/gnome-vfs2/test/test-channel.c @ 18317

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* test-channel.c - Test for the `open_as_channel' functionality of the GNOME
   Virtual File System.

   Copyright (C) 1999 Free Software Foundation

   The Gnome Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The Gnome Library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the Gnome Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.

   Author: Ettore Perazzoli <ettore@comm2000.it> */

#include <config.h>

#include <glib/gconvert.h> /* workaround for bug in giochannel.h */
#include <glib/giochannel.h>
#include <glib/gmain.h>
#include <glib/gmessages.h>
#include <libgnomevfs/gnome-vfs-async-ops.h>
#include <libgnomevfs/gnome-vfs-init.h>
#include <stdio.h>

#define BUFFER_SIZE 4096

static GMainLoop *main_loop;

static gboolean
io_channel_callback (GIOChannel *source,
                     GIOCondition condition,
                     gpointer data)
{
        gchar buffer[BUFFER_SIZE + 1];
        gsize bytes_read;

        printf ("\n\n************ IO Channel callback!\n");

        if (condition & G_IO_IN) {
                g_io_channel_read_chars (source, buffer, sizeof (buffer) - 1, &bytes_read, NULL);
                buffer[bytes_read] = 0;
                printf ("---> Read %lu byte(s):\n%s\n\n(***END***)\n",
                        (gulong)bytes_read, buffer);
                fflush (stdout);
        }

        if (condition & G_IO_NVAL) {
                g_warning ("channel_callback got NVAL condition.");
                return FALSE;
        }

        if (condition & G_IO_HUP) {
                printf ("\n----- EOF -----\n");
                fflush (stdout);
                g_io_channel_shutdown (source, FALSE, NULL);
                g_main_loop_quit (main_loop);
                return FALSE;
        }

        return TRUE;
}

static void open_callback (GnomeVFSAsyncHandle *handle,
                           GIOChannel *channel,
                           GnomeVFSResult result,
                           gpointer data)
{
        if (result != GNOME_VFS_OK) {
                printf ("Error opening: %s.\n",
                        gnome_vfs_result_to_string (result));
                return;
        }

        printf ("Open successful, callback data `%s'.\n", (gchar *) data);
        g_io_add_watch_full (channel,
                             G_PRIORITY_HIGH,
                             G_IO_IN | G_IO_NVAL | G_IO_HUP,
                             io_channel_callback, handle,
                             NULL);

        g_io_channel_unref (channel);
}


int
main (int argc, char **argv)
{
        GnomeVFSAsyncHandle *handle;

        if (argc < 2) {
                fprintf (stderr, "Usage: %s <uri>\n", argv[0]);
                return 1;
        }

        puts ("Initializing gnome-vfs...");
        gnome_vfs_init ();

        printf ("Starting open for `%s'...\n", argv[1]);
        gnome_vfs_async_open_as_channel (&handle, argv[1],
                                         GNOME_VFS_OPEN_READ,
                                         BUFFER_SIZE,
                                         0,
                                         open_callback,
                                         "open_callback");

        puts ("GTK+ main loop running.");
        main_loop = g_main_loop_new (NULL, TRUE);
        g_main_loop_run (main_loop);
        g_main_loop_unref (main_loop);

        puts ("GTK+ main loop finished.");

        puts ("All done");

        while (1)
                ;

        return 0;
}