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
|
------------------------------------------------------------------------------
-- --
-- GNAT ncurses Binding Samples --
-- --
-- ncurses --
-- --
-- B O D Y --
-- --
------------------------------------------------------------------------------
-- Copyright (c) 2000 Free Software Foundation, Inc. --
-- --
-- Permission is hereby granted, free of charge, to any person obtaining a --
-- copy of this software and associated documentation files (the --
-- "Software"), to deal in the Software without restriction, including --
-- without limitation the rights to use, copy, modify, merge, publish, --
-- distribute, distribute with modifications, sublicense, and/or sell --
-- copies of the Software, and to permit persons to whom the Software is --
-- furnished to do so, subject to the following conditions: --
-- --
-- The above copyright notice and this permission notice shall be included --
-- in all copies or substantial portions of the Software. --
-- --
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
-- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
-- --
-- Except as contained in this notice, the name(s) of the above copyright --
-- holders shall not be used in advertising or otherwise to promote the --
-- sale, use or other dealings in this Software without prior written --
-- authorization. --
------------------------------------------------------------------------------
-- Author: Eugene V. Melaragno <aldomel@ix.netcom.com> 2000
-- Version Control
-- $Revision$
-- Binding Version 01.00
------------------------------------------------------------------------------
-- A simplified version of the GNU getopt function
-- copyright Free Software Foundtion
with Ada.Strings.Fixed;
with Ada.Strings.Bounded;
with Ada.Text_IO; use Ada.Text_IO;
package body ncurses2.getopt is
opterr : Character := Character'Val (1);
optopt : Character := '?';
initialized : Boolean := False;
nextchar : Natural := 0;
-- Ncurses doesn't use the non option elements so we are spared
-- the job of computing those.
-- also the user is not allowed to modify argv or argc
-- Doing so is Erroneous execution.
-- longoptions are not handled.
procedure Qgetopt (retval : out Integer;
argc : Integer;
argv : stringfunc;
-- argv will be the Argument function.
optstring : String;
optind : in out Integer;
-- ignored for ncurses, must be initialized to 1 by
-- the caller
Optarg : out stringa
-- a garbage colector would be useful here.
) is
package BS is new Ada.Strings.Bounded.Generic_Bounded_Length (200);
use BS;
optargx : Bounded_String;
begin
if argc < optind then
retval := -1;
return;
end if;
optargx := To_Bounded_String ("");
if nextchar = 0 then
if argv (optind) = "--" then
-- the rest are non-options, we ignore them
retval := -1;
return;
end if;
if argv (optind)(1) /= '-' or argv (optind)'Length = 1 then
optind := optind + 1;
Optarg := new String'(argv (optind));
retval := 1;
return;
end if;
nextchar := 2; -- skip the one hyphen.
end if;
-- Look at and handle the next short option-character.
declare
c : Character := argv (optind) (nextchar);
temp : Natural :=
Ada.Strings.Fixed.Index (optstring, String'(1 => c));
begin
if temp = 0 or c = ':' then
Put_Line (Standard_Error,
argv (optind) & ": invalid option -- " & c);
optopt := c;
c := '?';
return;
end if;
if optstring (temp + 1) = ':' then
if optstring (temp + 2) = ':' then
-- This is an option that accepts an argument optionally.
if nextchar /= argv (optind)'Length then
optargx := To_Bounded_String
(argv (optind) (nextchar .. argv (optind)'Length));
else
Optarg := null;
end if;
else
-- This is an option that requires an argument.
if nextchar /= argv (optind)'Length then
optargx := To_Bounded_String
(argv (optind) (nextchar .. argv (optind)'Length));
optind := optind + 1;
elsif optind = argc then
Put_Line (Standard_Error,
argv (optind) &
": option requires an argument -- " & c);
optopt := c;
if optstring (1) = ':' then
c := ':';
else
c := '?';
end if;
else
-- increment it again when taking next ARGV-elt as argument.
optind := optind + 1;
optargx := To_Bounded_String (argv (optind));
optind := optind + 1;
end if;
end if;
nextchar := 0;
else -- no argument for the option
if nextchar = argv (optind)'Length then
optind := optind + 1;
nextchar := 0;
else
nextchar := nextchar + 1;
end if;
end if;
retval := Character'Pos (c);
Optarg := new String'(To_String (optargx));
return;
end;
end Qgetopt;
end ncurses2.getopt;
|
