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
|
-------------------------------------------------------------------------------
-- (C) Altran Praxis Limited
-------------------------------------------------------------------------------
--
-- The SPARK toolset 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. The SPARK toolset is distributed in the hope that it will be
-- useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
-- Public License for more details. You should have received a copy of the GNU
-- General Public License distributed with the SPARK toolset; see file
-- COPYING3. If not, go to http://www.gnu.org/licenses for a complete copy of
-- the license.
--
--=============================================================================
package body ScreenEcho is
procedure Put_Char (Item : in Character) is
begin
SPARK_IO.Put_Char (SPARK_IO.Standard_Output, Item);
end Put_Char;
----------------------------------------------------------------------------
procedure Put_Integer (Item : in Integer;
Width : in Natural;
Base : in SPARK_IO.Number_Base) is
begin
SPARK_IO.Put_Integer (SPARK_IO.Standard_Output, Item, Width, Base);
end Put_Integer;
----------------------------------------------------------------------------
procedure Put_String (Item : in String) is
begin
SPARK_IO.Put_String (SPARK_IO.Standard_Output, Item, 0);
end Put_String;
----------------------------------------------------------------------------
procedure Put_Line (Item : in String) is
begin
SPARK_IO.Put_Line (SPARK_IO.Standard_Output, Item, 0);
end Put_Line;
----------------------------------------------------------------------------
procedure Put_StringWithLength (Item : in String;
Stop : in Natural) is
begin
SPARK_IO.Put_String (SPARK_IO.Standard_Output, Item, Stop);
end Put_StringWithLength;
----------------------------------------------------------------------------
procedure Put_LineWithLength (Item : in String;
Stop : in Natural) is
begin
SPARK_IO.Put_Line (SPARK_IO.Standard_Output, Item, Stop);
end Put_LineWithLength;
----------------------------------------------------------------------------
procedure New_Line (Spacing : in Positive) is
begin
SPARK_IO.New_Line (SPARK_IO.Standard_Output, Spacing);
end New_Line;
----------------------------------------------------------------------------
procedure Set_Col (Posn : in Positive) is
begin
SPARK_IO.Set_Col (SPARK_IO.Standard_Output, Posn);
end Set_Col;
----------------------------------------------------------------------------
procedure Put_ExaminerString (Item : in E_Strings.T) is
begin
E_Strings.Put_String (File => SPARK_IO.Standard_Output,
E_Str => Item);
end Put_ExaminerString;
----------------------------------------------------------------------------
procedure Put_ExaminerLine (Item : in E_Strings.T) is
begin
E_Strings.Put_Line (File => SPARK_IO.Standard_Output,
E_Str => Item);
end Put_ExaminerLine;
----------------------------------------------------------------------------
procedure Echo (Str : in E_Strings.T) is
procedure Print_Line (Start_Pos, End_Pos, Indent : in Natural;
Line : in E_Strings.T)
--# global in out SPARK_IO.File_Sys;
--# derives SPARK_IO.File_Sys from *,
--# End_Pos,
--# Indent,
--# Line,
--# Start_Pos;
is
Pos, Current_Line_End, Current_Line_Start : Natural;
procedure Print_Current_Line
--# global in Current_Line_End;
--# in Current_Line_Start;
--# in Line;
--# in out SPARK_IO.File_Sys;
--# derives SPARK_IO.File_Sys from *,
--# Current_Line_End,
--# Current_Line_Start,
--# Line;
is
begin
E_Strings.Put_String
(File => SPARK_IO.Standard_Output,
E_Str => E_Strings.Section
(E_Str => Line,
Start_Pos => Current_Line_Start,
Length => (Current_Line_End - Current_Line_Start) + 1));
end Print_Current_Line;
procedure Find_Current_Line_End (Current_Line_Pos : in Natural)
--# global in Current_Line_Start;
--# in End_Pos;
--# in Line;
--# in Pos;
--# out Current_Line_End;
--# derives Current_Line_End from Current_Line_Pos,
--# Current_Line_Start,
--# End_Pos,
--# Line,
--# Pos;
is
Next_Space_Pos, Current_Space_Pos : Integer;
function Find_Next_Space (Curr_Pos : in E_Strings.Positions) return Natural
--# global in Line;
is
Found : Boolean;
Next_Pos : Natural;
begin
E_Strings.Find_Char_After
(E_Str => Line,
Search_Start => Curr_Pos,
Search_Char => ' ',
Char_Found => Found,
Char_Pos => Next_Pos);
if not Found then
Next_Pos := E_Strings.Get_Length (E_Str => Line);
end if;
return Next_Pos;
end Find_Next_Space;
begin
Current_Space_Pos := Find_Next_Space (Curr_Pos => Current_Line_Pos + 1);
loop
exit when Current_Space_Pos = E_Strings.Get_Length (E_Str => Line);
Next_Space_Pos := Find_Next_Space (Curr_Pos => Current_Space_Pos + 1);
exit when (Pos + Next_Space_Pos) - Current_Line_Start > End_Pos;
Current_Space_Pos := Next_Space_Pos;
end loop;
Current_Line_End := Current_Space_Pos;
end Find_Current_Line_End;
begin
Current_Line_Start := 1;
Pos := Start_Pos;
Find_Current_Line_End (0);
loop
Print_Current_Line;
exit when Current_Line_End = E_Strings.Get_Length (E_Str => Line);
New_Line (1);
Set_Col (Indent);
Pos := Indent;
Current_Line_Start := Current_Line_End + 1;
Find_Current_Line_End (Current_Line_Start);
end loop;
end Print_Line;
begin
New_Line (1);
Set_Col (12);
Print_Line (12, 80, 12, Str);
Put_Line (" ...");
end Echo;
end ScreenEcho;
|
