Source Code for Module osh.command.stdin

 1  # osh 
 2  # Copyright (C) Jack Orenstein <jao@geophile.com> 
 3  # 
 4  # This program is free software; you can redistribute it and/or modify 
 5  # it under the terms of the GNU General Public License as published by 
 6  # the Free Software Foundation; either version 2 of the License, or 
 7  # (at your option) any later version. 
 8  # 
 9  # This program is distributed in the hope that it will be useful, 
10  # but WITHOUT ANY WARRANTY; without even the implied warranty of 
11  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
12  # GNU General Public License for more details. 
13  # 
14  # You should have received a copy of the GNU General Public License 
15  # along with this program; if not, write to the Free Software 
16  # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
17   
18  """For API usage only, (for CLI use C{cat ... | osh ^ ...} syntax instead.) 
19  """ 
20   
21  import sys 
22   
23  import osh.core 
24   
25  # CLI 
26 -def _stdin(): 
27      return _Stdin() 
28   
29  # API 
30 -def stdin(): 
31      """Each line of input from stdin is written to the output stream. 
32      """ 
33      return _Stdin() 
34   
35 -class _Stdin(osh.core.Generator): 
36   
37      _stdin = None 
38   
39   
40      # object interface 
41   
42 -    def __init__(self): 
43          osh.core.Generator.__init__(self, '', (0, 0)) 
44   
45   
46      # BaseOp interface 
47       
48 -    def setup(self): 
49          pass 
50   
51 -    def doc(self): 
52          return __doc__ 
53   
54      # Generator interface 
55   
56 -    def execute(self): 
57          eof = False 
58          while not eof: 
59              line = sys.stdin.readline() 
60              if line: 
61                  if line.endswith('\n'): 
62                      line = line[:-1] 
63                  self.send(line) 
64              else: 
65                  eof = True 
66