bcc1596a27f7389797e318aff7d9af40b7d99a53
1 # Extended prompt utilities.
2 # Copyright (C) 2011-2018 Free Software Foundation, Inc.
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 3 of the License, or
7 # (at your option) any later version.
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.
14 # You should have received a copy of the GNU General Public License
15 # along with this program. If not, see <http://www.gnu.org/licenses/>.
17 """ Extended prompt library functions."""
22 def _prompt_pwd(ignore
):
23 "The current working directory."
26 def _prompt_object_attr(func
, what
, attr
, nattr
):
27 """Internal worker for fetching GDB attributes."""
33 return '<no %s>' % what
34 if hasattr(obj
, attr
):
35 result
= getattr(obj
, attr
)
40 return '<no attribute %s on current %s>' % (attr
, what
)
42 def _prompt_frame(attr
):
43 "The selected frame; an argument names a frame parameter."
44 return _prompt_object_attr(gdb
.selected_frame
, 'frame', attr
, 'name')
46 def _prompt_thread(attr
):
47 "The selected thread; an argument names a thread parameter."
48 return _prompt_object_attr(gdb
.selected_thread
, 'thread', attr
, 'num')
50 def _prompt_version(attr
):
54 def _prompt_esc(attr
):
70 def _prompt_param(attr
):
71 "A parameter's value; the argument names the parameter."
72 return gdb
.parameter(attr
)
74 def _prompt_noprint_begin(attr
):
75 "Begins a sequence of non-printing characters."
78 def _prompt_noprint_end(attr
):
79 "Ends a sequence of non-printing characters."
82 prompt_substitutions
= {
92 '[': _prompt_noprint_begin
,
93 ']': _prompt_noprint_end
97 """Generate help dynamically from the __doc__ strings of attribute
101 keys
= sorted (prompt_substitutions
.keys())
103 result
+= ' \\%s\t%s\n' % (key
, prompt_substitutions
[key
].__doc
__)
105 A substitution can be used in a simple form, like "\\f".
106 An argument can also be passed to it, like "\\f{name}".
107 The meaning of the argument depends on the particular substitution."""
110 def substitute_prompt(prompt
):
111 "Perform substitutions on PROMPT."
117 if prompt
[i
] == '\\':
123 if cmdch
in prompt_substitutions
:
124 cmd
= prompt_substitutions
[cmdch
]
126 if i
+ 1 < plen
and prompt
[i
+ 1] == '{':
128 while j
< plen
and prompt
[j
] != '}':
130 # Just ignore formatting errors.
131 if j
>= plen
or prompt
[j
] != '}':
134 arg
= prompt
[i
+ 2 : j
]
138 result
+= str(cmd(arg
))
140 # Unrecognized escapes are turned into the escaped
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