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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
|
------------------------------------------------------------------------------
-- --
-- GNAT LIBRARY COMPONENTS --
-- --
-- G N A T . E X P E C T . T T Y --
-- --
-- S p e c --
-- --
-- Copyright (C) 2000-2011, AdaCore --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- 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/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with GNAT.OS_Lib; use GNAT.OS_Lib;
with System; use System;
package body GNAT.Expect.TTY is
On_Windows : constant Boolean := Directory_Separator = '\';
-- True when on Windows
-----------
-- Close --
-----------
overriding procedure Close
(Descriptor : in out TTY_Process_Descriptor;
Status : out Integer)
is
procedure Terminate_Process (Process : System.Address);
pragma Import (C, Terminate_Process, "__gnat_terminate_process");
function Waitpid (Process : System.Address) return Integer;
pragma Import (C, Waitpid, "__gnat_waitpid");
-- Wait for a specific process id, and return its exit code
procedure Free_Process (Process : System.Address);
pragma Import (C, Free_Process, "__gnat_free_process");
procedure Close_TTY (Process : System.Address);
pragma Import (C, Close_TTY, "__gnat_close_tty");
begin
-- If we haven't already closed the process
if Descriptor.Process = System.Null_Address then
Status := -1;
else
if Descriptor.Input_Fd /= Invalid_FD then
Close (Descriptor.Input_Fd);
end if;
if Descriptor.Error_Fd /= Descriptor.Output_Fd
and then Descriptor.Error_Fd /= Invalid_FD
then
Close (Descriptor.Error_Fd);
end if;
if Descriptor.Output_Fd /= Invalid_FD then
Close (Descriptor.Output_Fd);
end if;
-- Send a Ctrl-C to the process first. This way, if the
-- launched process is a "sh" or "cmd", the child processes
-- will get terminated as well. Otherwise, terminating the
-- main process brutally will leave the children running.
Interrupt (Descriptor);
delay 0.05;
Terminate_Process (Descriptor.Process);
Status := Waitpid (Descriptor.Process);
if not On_Windows then
Close_TTY (Descriptor.Process);
end if;
Free_Process (Descriptor.Process'Address);
Descriptor.Process := System.Null_Address;
GNAT.OS_Lib.Free (Descriptor.Buffer);
Descriptor.Buffer_Size := 0;
end if;
end Close;
overriding procedure Close (Descriptor : in out TTY_Process_Descriptor) is
Status : Integer;
begin
Close (Descriptor, Status);
end Close;
-----------------------------
-- Close_Pseudo_Descriptor --
-----------------------------
procedure Close_Pseudo_Descriptor
(Descriptor : in out TTY_Process_Descriptor)
is
begin
Descriptor.Buffer_Size := 0;
GNAT.OS_Lib.Free (Descriptor.Buffer);
end Close_Pseudo_Descriptor;
---------------
-- Interrupt --
---------------
overriding procedure Interrupt
(Descriptor : in out TTY_Process_Descriptor)
is
procedure Internal (Process : System.Address);
pragma Import (C, Internal, "__gnat_interrupt_process");
begin
if Descriptor.Process /= System.Null_Address then
Internal (Descriptor.Process);
end if;
end Interrupt;
procedure Interrupt (Pid : Integer) is
procedure Internal (Pid : Integer);
pragma Import (C, Internal, "__gnat_interrupt_pid");
begin
Internal (Pid);
end Interrupt;
-----------------------
-- Pseudo_Descriptor --
-----------------------
procedure Pseudo_Descriptor
(Descriptor : out TTY_Process_Descriptor'Class;
TTY : GNAT.TTY.TTY_Handle;
Buffer_Size : Natural := 4096) is
begin
Descriptor.Input_Fd := GNAT.TTY.TTY_Descriptor (TTY);
Descriptor.Output_Fd := Descriptor.Input_Fd;
-- Create the buffer
Descriptor.Buffer_Size := Buffer_Size;
if Buffer_Size /= 0 then
Descriptor.Buffer := new String (1 .. Positive (Buffer_Size));
end if;
end Pseudo_Descriptor;
----------
-- Send --
----------
overriding procedure Send
(Descriptor : in out TTY_Process_Descriptor;
Str : String;
Add_LF : Boolean := True;
Empty_Buffer : Boolean := False)
is
Header : String (1 .. 5);
Length : Natural;
Ret : Natural;
procedure Internal
(Process : System.Address;
S : in out String;
Length : Natural;
Ret : out Natural);
pragma Import (C, Internal, "__gnat_send_header");
begin
Length := Str'Length;
if Add_LF then
Length := Length + 1;
end if;
Internal (Descriptor.Process, Header, Length, Ret);
if Ret = 1 then
-- Need to use the header
GNAT.Expect.Send
(Process_Descriptor (Descriptor),
Header & Str, Add_LF, Empty_Buffer);
else
GNAT.Expect.Send
(Process_Descriptor (Descriptor),
Str, Add_LF, Empty_Buffer);
end if;
end Send;
--------------
-- Set_Size --
--------------
procedure Set_Size
(Descriptor : in out TTY_Process_Descriptor'Class;
Rows : Natural;
Columns : Natural)
is
procedure Internal (Process : System.Address; R, C : Integer);
pragma Import (C, Internal, "__gnat_setup_winsize");
begin
if Descriptor.Process /= System.Null_Address then
Internal (Descriptor.Process, Rows, Columns);
end if;
end Set_Size;
---------------------------
-- Set_Up_Communications --
---------------------------
overriding procedure Set_Up_Communications
(Pid : in out TTY_Process_Descriptor;
Err_To_Out : Boolean;
Pipe1 : access Pipe_Type;
Pipe2 : access Pipe_Type;
Pipe3 : access Pipe_Type)
is
pragma Unreferenced (Err_To_Out, Pipe1, Pipe2, Pipe3);
function Internal (Process : System.Address) return Integer;
pragma Import (C, Internal, "__gnat_setup_communication");
begin
if Internal (Pid.Process'Address) /= 0 then
raise Invalid_Process with "cannot setup communication.";
end if;
end Set_Up_Communications;
---------------------------------
-- Set_Up_Child_Communications --
---------------------------------
overriding procedure Set_Up_Child_Communications
(Pid : in out TTY_Process_Descriptor;
Pipe1 : in out Pipe_Type;
Pipe2 : in out Pipe_Type;
Pipe3 : in out Pipe_Type;
Cmd : String;
Args : System.Address)
is
pragma Unreferenced (Pipe1, Pipe2, Pipe3, Cmd);
function Internal
(Process : System.Address; Argv : System.Address; Use_Pipes : Integer)
return Process_Id;
pragma Import (C, Internal, "__gnat_setup_child_communication");
begin
Pid.Pid := Internal (Pid.Process, Args, Boolean'Pos (Pid.Use_Pipes));
end Set_Up_Child_Communications;
----------------------------------
-- Set_Up_Parent_Communications --
----------------------------------
overriding procedure Set_Up_Parent_Communications
(Pid : in out TTY_Process_Descriptor;
Pipe1 : in out Pipe_Type;
Pipe2 : in out Pipe_Type;
Pipe3 : in out Pipe_Type)
is
pragma Unreferenced (Pipe1, Pipe2, Pipe3);
procedure Internal
(Process : System.Address;
Inputfp : out File_Descriptor;
Outputfp : out File_Descriptor;
Errorfp : out File_Descriptor;
Pid : out Process_Id);
pragma Import (C, Internal, "__gnat_setup_parent_communication");
begin
Internal
(Pid.Process, Pid.Input_Fd, Pid.Output_Fd, Pid.Error_Fd, Pid.Pid);
end Set_Up_Parent_Communications;
-------------------
-- Set_Use_Pipes --
-------------------
procedure Set_Use_Pipes
(Descriptor : in out TTY_Process_Descriptor;
Use_Pipes : Boolean) is
begin
Descriptor.Use_Pipes := Use_Pipes;
end Set_Use_Pipes;
end GNAT.Expect.TTY;
|
