Tools/scripts/which.py

   1 #! /usr/bin/env python
   2
   3 # Variant of "which".
   4 # On stderr, near and total misses are reported.
   5 # '-l<flags>' argument adds ls -l<flags> of each file found.
   6
   7 import sys
   8 if sys.path[0] in (".", ""): del sys.path[0]
   9
  10 import sys, os, string
  11 from stat import *
  12
  13 def msg(str):
  14         sys.stderr.write(str + '\n')
  15
  16 pathlist = string.splitfields(os.environ['PATH'], ':')
  17
  18 sts = 0
  19 longlist = ''
  20
  21 if sys.argv[1:] and sys.argv[1][:2] == '-l':
  22         longlist = sys.argv[1]
  23         del sys.argv[1]
  24
  25 for prog in sys.argv[1:]:
  26         ident = ()
  27         for dir in pathlist:
  28                 file = os.path.join(dir, prog)
  29                 try:
  30                         st = os.stat(file)
  31                 except os.error:
  32                         continue
  33                 if not S_ISREG(st[ST_MODE]):
  34                         msg(file + ': not a disk file')
  35                 else:
  36                         mode = S_IMODE(st[ST_MODE])
  37                         if mode & 0111:
  38                                 if not ident:
  39                                         print file
  40                                         ident = st[:3]
  41                                 else:
  42                                         if st[:3] == ident:
  43                                                 s = 'same as: '
  44                                         else:
  45                                                 s = 'also: '
  46                                         msg(s + file)
  47                         else:
  48                                 msg(file + ': not executable')
  49                 if longlist:
  50                         sts = os.system('ls ' + longlist + ' ' + file)
  51                         if sts: msg('"ls -l" exit status: ' + `sts`)
  52         if not ident:
  53                 msg(prog + ': not found')
  54                 sts = 1
  55
  56 sys.exit(sts)