1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2003-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
-module(snmpc_misc).
%% need definition of mib record
-include("snmp_types.hrl").
-include("snmpc_misc.hrl").
-export([assq/2,
bits_to_int/2,
ensure_trailing_dir_delimiter/1,
foreach/3,
is_string/1,
read_mib/1,
read_noexit/2,
strip_extension_from_filename/2,
to_upper/1]).
%%--------------------------------------------------
%% Not a real assq, but what the heck, it's useful.
%%--------------------------------------------------
assq(Key, List) ->
case lists:keysearch(Key, 1, List) of
{value, {Key, Val}} -> {value, Val};
_ -> false
end.
%%----------------------------------------------------------------------
%% Converts a list of named bits to the integer value.
%% Returns: integer()|error
%%----------------------------------------------------------------------
bits_to_int(Val,Kibbles) ->
bits_to_int(Val,Kibbles,0).
bits_to_int([],_Kibbles,Res) -> Res;
bits_to_int([Kibble|Ks],Kibbles,Res) ->
case snmp_misc:assq(Kibble,Kibbles) of
{value,V} ->
bits_to_int(Ks,Kibbles,Res + round(math:pow(2,V)));
_ ->
error
end.
ensure_trailing_dir_delimiter([]) -> "/";
ensure_trailing_dir_delimiter(DirSuggestion) ->
case lists:last(DirSuggestion) of
$/ -> DirSuggestion;
_ -> lists:append(DirSuggestion,"/")
end.
strip_extension_from_filename(FileName, Ext) when is_atom(FileName) ->
strip_extension_from_filename(atom_to_list(FileName), Ext);
strip_extension_from_filename(FileName, Ext) when is_list(FileName) ->
case lists:suffix(Ext, FileName) of
true -> lists:sublist(FileName, 1, length(FileName) - length(Ext));
false -> FileName
end.
to_upper([C|Cs]) when (C >= $a) andalso (C =< $z) -> [C-($a-$A)|to_upper(Cs)];
to_upper([C|Cs]) -> [C|to_upper(Cs)];
to_upper([]) -> [].
is_string([]) -> true;
is_string([Tkn | Str])
when is_integer(Tkn) andalso (Tkn >= 0) andalso (Tkn =< 255) ->
is_string(Str);
is_string(_) -> false.
foreach(Function, ExtraArgs, [H | T]) ->
apply(Function, [H | ExtraArgs]),
foreach(Function, ExtraArgs, T);
foreach(_Function, _ExtraArgs, []) ->
true.
%%----------------------------------------------------------------------
%% Returns: {ok, Mib}|{error, Reason}
%% The reason for having the function if this module is:
%% The compiler package and the agent package are separated, this is
%% the only common module.
%%----------------------------------------------------------------------
read_mib(FileName) ->
(catch do_read_mib(FileName)).
do_read_mib(FileName) ->
?read_mib(FileName).
%% Ret. {ok, Res} | {error, Line, Error} | {error, open_file}
read_noexit(File, CheckFunc) ->
case file:open(File, [read]) of
{ok, Fd} ->
case loop(Fd, [], CheckFunc, 1, File) of
{error, Line, R} ->
file:close(Fd),
{error, Line, R};
Res ->
file:close(Fd),
{ok, Res}
end;
_Error ->
{error, open_file}
end.
%%-----------------------------------------------------------------
%% Ret: {error, Line, Reason} | Row
%%-----------------------------------------------------------------
loop(Fd, Res, Func, StartLine, File) ->
case read(Fd, "", StartLine) of
{ok, Row, EndLine} ->
case (catch apply(Func, [Row])) of
{ok, NewRow} ->
loop(Fd, [NewRow | Res], Func, EndLine, File);
true ->
loop(Fd, [Row | Res], Func, EndLine, File);
Error ->
{error, EndLine, Error}
end;
{error, EndLine, Error} ->
{error, EndLine, Error};
eof ->
Res
end.
%%-----------------------------------------------------------------
%% io:read modified to give us line numbers.
%%-----------------------------------------------------------------
read(Io, Prompt, StartLine) ->
case io:request(Io, {get_until, Prompt, erl_scan, tokens, [StartLine]}) of
{ok, Toks, EndLine} ->
case erl_parse:parse_term(Toks) of
{ok, Term} ->
{ok, Term, EndLine};
{error, {Line, erl_parse, Error}} ->
{error, Line, {parse_error, Error}}
end;
{error, E, EndLine} ->
{error, EndLine, E};
{eof, _EndLine} ->
eof;
Other ->
Other
end.
|
