one shot df colorize

reporting/diskfree-tracker

@@ -43,6 +43,8 @@ You can tap in to an existing log with:
                         help="Disable colored output")
     parser.add_argument("-n",type=int,dest="delay",default=3,
                         help="Refresh delay")                    
+    parser.add_argument("-1",action="store_true",dest="once",default=False,
+                        help="Run once and exit")
 
     parser.add_argument("--version",action='version', version=VERSION)
     options=parser.parse_args()
@@ -131,7 +133,7 @@ def print_stats(stats):
     ''' Prints logged errors, and the status line '''
     #sys.stdout.write(SAVE)
     e=0
-    sys.stdout.write(pos(e+1,0)+c((S,C))+"= disk free = "+c((E))+
+    sys.stdout.write(pos(e+1,0)+c((S,C))+"= DISK FREE = "+c((E))+
                      human_time(stats['time'])+'=>'+c((S,G))+human_time()+c((E))+CLRLN)
     if (stats['running']):
         pass
@@ -161,6 +163,34 @@ def print_stats(stats):
     sys.stdout.write(DOWN+CLRBLN+CLRLN)            
     #sys.stdout.write(LOAD)
 
+def print_stats_once(stats):
+    ''' Prints logged errors, once '''
+    e=0
+    sys.stdout.write(c((S,C))+"= DISK FREE = "+c((E,))+CLRLN+'\n')
+    if (stats['running']):
+        pass
+    else:
+        return
+    sys.stdout.write("        Total      Used   Use%     Free"+CLRLN+'\n')
+    for ex in enumerate(stats['running']):
+        sys.stdout.write('('+str(ex[0]+1).rjust(2)+') '+
+                    ' '.join([
+                              human_size(ex[1][6]).rjust(8),
+                              human_size(ex[1][6]-ex[1][0]).rjust(10),
+                              colorize_usage(ex[1][4]),
+                              human_size(ex[1][0]).rjust(10),
+                             ex[1][2],
+                             "("+ex[1][5]+")"])+
+                        CLRLN+'\n')
+    sys.stdout.write('Tot: '+
+                    ' '.join([
+                              human_size(stats['totals'][1]).rjust(8), 
+                              human_size(stats['totals'][1]-stats['totals'][0]).rjust(10), '    ',
+                              human_size(stats['totals'][0]).rjust(10)
+                              ])+
+                        CLRLN+'\n')
+            
+
 def colorize_usage(string):
     ''' colorizes the usage string '''
     if len(string)<3:
@@ -230,7 +260,8 @@ stats={'time':datetime.now(),
        'delay': options.delay
        }
 
-sys.stdout.write(CLR+pos(0,0)+"Launching...")
+if not options.once:
+    sys.stdout.write(CLR+pos(0,0)+"Launching...")
 while 1:
 
     try:
@@ -246,6 +277,9 @@ while 1:
         for line in stdout.split('\n')[1:]:
             stats=count_running(line,stats)
 
+        if options.once:
+            print_stats_once(stats)
+            sys.exit(0)
         print_stats(stats)
         sys.stdout.flush()
         time.sleep(options.delay)