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 | ------------------------------------------------------------------------------
-- G N A T C O L L --
-- --
-- Copyright (C) 2021, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, or (at your option) any later --
-- version. This library is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
------------------------------------------------------------------------------
with Ada.Environment_Variables;
package body GNATCOLL.OS.Process_Types is
package Env_Vars renames Ada.Environment_Variables;
----------
-- As_C --
----------
function As_C (Args : Arguments) return C_String_Array is
begin
return SLB.As_C_String_Array (SLB.String_List_Builder (Args));
end As_C;
function As_C (Env : Environ) return C_String_Array is
function GNAT_Environ return C_String_Array
with Import => True,
Convention => C,
External_Name => "__gnat_environ";
begin
if Env.Inherited then
return GNAT_Environ;
else
return SLB.As_C_String_Array (Env.Env);
end if;
end As_C;
----------------
-- Deallocate --
----------------
procedure Deallocate (Args : in out Arguments) is
begin
SLB.Deallocate (SLB.String_List_Builder (Args));
end Deallocate;
procedure Deallocate (Env : in out Environ) is
begin
SLB.Deallocate (Env.Env);
Env.Inherited := True;
end Deallocate;
------------
-- Import --
------------
procedure Import (Env : in out Environ) is
procedure Import_Var (Name, Value : String);
procedure Import_Var (Name, Value : String) is
begin
Set_Variable (Env, Name, Value);
end Import_Var;
begin
Env_Vars.Iterate (Import_Var'Unrestricted_Access);
end Import;
-------------
-- Inherit --
-------------
procedure Inherit (Env : in out Environ) is
begin
Env.Inherited := True;
SLB.Deallocate (Env.Env);
end Inherit;
-------------
-- Program --
-------------
function Program (Args : Arguments) return UTF8.UTF_8_String
is
begin
return SLB.Element (SLB.String_List_Builder (Args), 1);
end Program;
function Program (Args : Arguments) return C_String
is
begin
return SLB.Element (SLB.String_List_Builder (Args), 1);
end Program;
------------------
-- Set_Variable --
------------------
procedure Set_Variable
(Env : in out Environ;
Name : UTF8.UTF_8_String;
Value : UTF8.UTF_8_String)
is
Entry_Prefix : constant UTF8.UTF_8_String := Name & "=";
begin
-- First remove previous entry for variable Name
if not Env.Inherited then
for J in reverse 1 .. SLB.Length (Env.Env) loop
declare
El : constant String := SLB.Element (Env.Env, J);
begin
if El'Length >= Entry_Prefix'Length and then
El (El'First .. El'First + Entry_Prefix'Length - 1) =
Entry_Prefix
then
SLB.Delete (Env.Env, J);
-- By construction we are sure the environment object cannot
-- contains twice an element starting with NAME= thus break
-- on first deletion.
exit;
end if;
end;
end loop;
end if;
-- Add new entry
SLB.Append (Env.Env, Name & "=" & Value);
-- Environment is no more inherited
Env.Inherited := False;
end Set_Variable;
------------------
-- Add_Argument --
------------------
procedure Add_Argument
(Args : in out Arguments;
Arg : UTF8.UTF_8_String)
is
begin
SLB.Append (SLB.String_List_Builder (Args), Arg);
end Add_Argument;
end GNATCOLL.OS.Process_Types;
|