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
|
------------------------------------------------------------------------------
-- --
-- GNAT RUNTIME COMPONENTS --
-- --
-- S Y S T E M . I M G _ C H A R --
-- --
-- B o d y --
-- --
-- $Revision: 1.11 $ --
-- --
-- Copyright (C) 1992,1993,1994,1995 Free Software Foundation, Inc. --
-- --
-- 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 2, 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. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
package body System.Img_Char is
---------------------
-- Image_Character --
---------------------
function Image_Character (V : Character) return String is
subtype Cname is String (1 .. 3);
S : Cname;
subtype C0_Range is Character
range Character'Val (16#00#) .. Character'Val (16#1F#);
C0 : constant array (C0_Range) of Cname :=
(Character'Val (16#00#) => "NUL",
Character'Val (16#01#) => "SOH",
Character'Val (16#02#) => "STX",
Character'Val (16#03#) => "ETX",
Character'Val (16#04#) => "EOT",
Character'Val (16#05#) => "ENQ",
Character'Val (16#06#) => "ACK",
Character'Val (16#07#) => "BEL",
Character'Val (16#08#) => "BS ",
Character'Val (16#09#) => "HT ",
Character'Val (16#0A#) => "LF ",
Character'Val (16#0B#) => "VT ",
Character'Val (16#0C#) => "FF ",
Character'Val (16#0D#) => "CR ",
Character'Val (16#0E#) => "SO ",
Character'Val (16#0F#) => "SI ",
Character'Val (16#10#) => "DLE",
Character'Val (16#11#) => "DC1",
Character'Val (16#12#) => "DC2",
Character'Val (16#13#) => "DC3",
Character'Val (16#14#) => "DC4",
Character'Val (16#15#) => "NAK",
Character'Val (16#16#) => "SYN",
Character'Val (16#17#) => "ETB",
Character'Val (16#18#) => "CAN",
Character'Val (16#19#) => "EM ",
Character'Val (16#1A#) => "SUB",
Character'Val (16#1B#) => "ESC",
Character'Val (16#1C#) => "FS ",
Character'Val (16#1D#) => "GS ",
Character'Val (16#1E#) => "RS ",
Character'Val (16#1F#) => "US ");
subtype C1_Range is Character
range Character'Val (16#7F#) .. Character'Val (16#9F#);
C1 : constant array (C1_Range) of Cname :=
(Character'Val (16#7F#) => "DEL",
Character'Val (16#80#) => "res",
Character'Val (16#81#) => "res",
Character'Val (16#82#) => "BPH",
Character'Val (16#83#) => "NBH",
Character'Val (16#84#) => "res",
Character'Val (16#85#) => "NEL",
Character'Val (16#86#) => "SSA",
Character'Val (16#87#) => "ESA",
Character'Val (16#88#) => "HTS",
Character'Val (16#89#) => "HTJ",
Character'Val (16#8A#) => "VTS",
Character'Val (16#8B#) => "PLD",
Character'Val (16#8C#) => "PLU",
Character'Val (16#8D#) => "RI ",
Character'Val (16#8E#) => "SS2",
Character'Val (16#8F#) => "SS3",
Character'Val (16#90#) => "DCS",
Character'Val (16#91#) => "PU1",
Character'Val (16#92#) => "PU2",
Character'Val (16#93#) => "STS",
Character'Val (16#94#) => "CCH",
Character'Val (16#95#) => "MW ",
Character'Val (16#96#) => "SPA",
Character'Val (16#97#) => "EPA",
Character'Val (16#98#) => "SOS",
Character'Val (16#99#) => "res",
Character'Val (16#9A#) => "SCI",
Character'Val (16#9B#) => "CSI",
Character'Val (16#9C#) => "ST ",
Character'Val (16#9D#) => "OSC",
Character'Val (16#9E#) => "PM ",
Character'Val (16#9F#) => "APC");
begin
-- Control characters are represented by their names (RM 3.5(32))
if V in C0_Range then
S := C0 (V);
if S (3) = ' ' then
return S (1 .. 2);
else
return S;
end if;
elsif V in C1_Range then
S := C1 (V);
if S (1) /= 'r' then
if S (3) = ' ' then
return S (1 .. 2);
else
return S;
end if;
-- Special case, res means RESERVED_nnn where nnn is the three digit
-- decimal value corresponding to the code position (more efficient
-- to compute than to store!)
else
declare
VP : constant Natural := Character'Pos (V);
St : String (1 .. 12) := "RESERVED_xxx";
begin
St (10) := Character'Val (48 + VP / 100);
St (11) := Character'Val (48 + (VP / 10) mod 10);
St (12) := Character'Val (48 + VP mod 10);
return St;
end;
end if;
-- Normal characters yield the character enlosed in quotes (RM 3.5(32))
else
S (1) := ''';
S (2) := V;
S (3) := ''';
return S;
end if;
end Image_Character;
end System.Img_Char;
|
