Source Code for Module ganeti.build.shell_example_lexer

 1  # 
 2  # 
 3   
 4  # Copyright (C) 2012 Google Inc. 
 5  # 
 6  # This program is free software; you can redistribute it and/or modify 
 7  # it under the terms of the GNU General Public License as published by 
 8  # the Free Software Foundation; either version 2 of the License, or 
 9  # (at your option) any later version. 
10  # 
11  # This program is distributed in the hope that it will be useful, but 
12  # WITHOUT ANY WARRANTY; without even the implied warranty of 
13  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
14  # General Public License for more details. 
15  # 
16  # You should have received a copy of the GNU General Public License 
17  # along with this program; if not, write to the Free Software 
18  # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 
19  # 02110-1301, USA. 
20   
21   
22  """Pygments lexer for our custom shell example sessions. 
23   
24  The lexer support the following custom markup: 
25   
26    - comments: # this is a comment 
27    - command lines: '$ ' at the beginning of a line denotes a command 
28    - variable input: %input% (works in both commands and screen output) 
29    - otherwise, regular text output from commands will be plain 
30   
31  """ 
32   
33  from pygments.lexer import RegexLexer, bygroups, include 
34  from pygments.token import Name, Text, Generic, Comment 
35   
36   
37 -class ShellExampleLexer(RegexLexer): 
38    name = "ShellExampleLexer" 
39    aliases = "shell-example" 
40    filenames = [] 
41   
42    tokens = { 
43      "root": [ 
44        include("comments"), 
45        include("userinput"), 
46        # switch to state input on '$ ' at the start of the line 
47        (r"^\$ ", Text, "input"), 
48        (r"\s+", Text), 
49        (r"[^#%\s\\]+", Text), 
50        (r"\\", Text), 
51        ], 
52      "input": [ 
53        include("comments"), 
54        include("userinput"), 
55        (r"[^#%\s\\]+", Generic.Strong), 
56        (r"\\\n", Generic.Strong), 
57        (r"\\", Generic.Strong), 
58        # switch to prev state at non-escaped new-line 
59        (r"\n", Text, "#pop"), 
60        (r"\s+", Text), 
61        ], 
62      "comments": [ 
63        (r"#.*\n", Comment.Single), 
64        ], 
65      "userinput": [ 
66        (r"(\\)(%)", bygroups(None, Text)), 
67        (r"(%)([^%]*)(%)", bygroups(None, Name.Variable, None)), 
68        ], 
69      } 
70   
71   
72 -def setup(app): 
73    app.add_lexer("shell-example", ShellExampleLexer()) 
74