add df

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 116 insertions, 0 deletions

diff --git a/src/plugins/df.py b/src/plugins/df.py
new file mode 100644
index 0000000..81ad5a2
--- /dev/null
+++ b/src/plugins/df.py
@@ -0,0 +1,116 @@
+# -*- python -*-
+'''
+xpybar – xmobar replacement written in python
+Copyright © 2014  Mattias Andrée (maandree@member.fsf.org)
+
+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/>.
+'''
+
+from util import *
+
+
+class Discs:
+    '''
+    Retrieve information about mounted discs
+    
+    @variable  filesystems:dict<str, Disc>  Map from filesystem to disc
+    @variable  mountpoints:dict<str, Disc>  Map from mountpoint to disc
+    '''
+    
+    
+    def __init__(self):
+        '''
+        Constructor
+        '''
+        self.filesystems = {}
+        self.mountpoints = {}
+        listed = {}
+        
+        df = spawn_read('df', '-B1', '-T').split('\n')[1:]
+        dfi = spawn_read('df', '-i').split('\n')[1:]
+        
+        # Disc usage information
+        for line in df:
+            line = line
+            buf = ''
+            cells = []
+            for c in line:
+                if (c == ' ') and (len(cells) < 6):
+                    if not buf == '':
+                        cells.append(buf)
+                        buf = ''
+                else:
+                    buf += c
+            cells.append(buf)
+            (fs, fstype, blocks, used, avail, _use, mount) = cells
+            listed[fs] = mount
+            disc = Disc()
+            self.filesystems[fs] = disc
+            self.mountpoints[mount] = disc
+            disc.filesystem = fs
+            disc.mountpoint = mount
+            disc.fstype = fstype
+            disc.blocks = int(blocks)
+            disc.used = int(used)
+            disc.available = int(avail)
+        
+        # Inode usage information
+        for line in dfi:
+            line = line
+            buf = ''
+            cells = []
+            for c in line:
+                if (c == ' ') and (len(cells) < 5):
+                    if not buf == '':
+                        cells.append(buf)
+                        buf = ''
+                else:
+                    buf += c
+            cells.append(buf)
+            (fs, inodes, iused, ifree, _use, _mount) = cells
+            if fs in self.filesystems:
+                del listed[fs]
+                disc = self.filesystems[fs]
+                disc.inodes = int(inodes)
+                disc.iused = int(iused)
+                disc.ifree = int(ifree)
+        
+        # Perhaps an umount appeared between `df -B1 -T` and `df -i`
+        for fs in listed.keys():
+            del self.filesystems[fs]
+            del self.mountpoints[listed[fs]]
+
+
+class Disc:
+    '''
+    Information about a single disc
+    
+    @variable  filesystem:str  The filesystem, a device or API filesystem name
+    @variable  mountpoint:str  The filesystem mountpoint, the one with shortest name if there are multiple
+    @variable  fstype:str      The filesystem type
+    @variable  blocks:int      The total number of 1 byte blocks, the value is close or equal to `used + available`
+    @variable  used:int        The number of used bytes
+    @variable  available:int   The number of unused bytes
+    @variable  inodes:int      The total number of index nodes
+    @variable  iused:int       The number of used index nodes
+    @variable  ifree:int       The number of available index nodes
+    '''
+    
+    
+    def __init__(self):
+        '''
+        Constructor
+        '''
+        pass
+