* Lots of changes, code cleanup, import/export in GUI.

src/lib/device_helper.py

@@ -0,0 +1,92 @@
+# This Python file uses the following encoding: utf-8
+#
+#  Author: Roman 'gryf' Dobosz  gryf@elysium.pl
+#
+#  Copyright (C) 2007 by Roman 'gryf' Dobosz
+#
+#  This file is part of pyGTKtalog.
+#
+#  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 2 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, write to the Free Software
+#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+#  -------------------------------------------------------------------------
+
+import os
+
+def volname(mntp):
+    """read volume name from cd/dvd"""
+    dev = mountpoint_to_dev(mntp)
+    if dev != None:
+        try:
+            disk = open(dev, "rb")
+            disk.seek(32808)
+            label = disk.read(32).strip()
+            disk.close()
+        except IOError:
+            return None
+        return label
+    return None
+
+def volmount(mntp):
+    """mount device, return 'ok' or error message"""
+    _in, _out, _err = os.popen3("mount %s" % mntp)
+    inf = _err.readlines()
+    if len(inf) > 0:
+        return inf[0].strip()
+    else:
+        return 'ok'
+
+def volumount(mntp):
+    """mount device, return 'ok' or error message"""
+    _in, _out, _err = os.popen3("umount %s" % mntp)
+    inf = _err.readlines()
+    if len(inf) > 0:
+        return inf[0].strip()
+    return 'ok'
+
+def check_mount(dev):
+    """Refresh the entries from fstab or mount."""
+    mounts = os.popen('mount')
+    for line in mounts.readlines():
+        parts = line.split()
+        device = parts
+        if device[0] == dev:
+            return True
+    return False
+
+def mountpoint_to_dev(mntp):
+    """guess device name by mountpoint from fstab"""
+    fstab = open("/etc/fstab")
+    device = None
+    for line in fstab.readlines():
+        output = line.split()
+        # lengtht of single valid  fstab line is at least 5
+        if len(output) > 5 and output[1] == mntp and output[0][0] != '#':
+            device = output[0]
+
+    fstab.close()
+    return device
+
+def eject_cd(eject_app, cdrom):
+    """mount device, return 'ok' or error message"""
+    if len(eject_app) > 0:
+        _in, _out, _err = os.popen3("%s %s" % (eject_app, cdrom))
+        inf = _err.readlines()
+
+        if len(inf) > 0 and inf[0].strip() != '':
+            return inf[0].strip()
+
+        return 'ok'
+    return "Eject program not specified"
+