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 | -----------------------------------------------------------------------
-- util-serialize-io -- IO Drivers for serialization
-- Copyright (C) 2010, 2011, 2016, 2017 Stephane Carrez
-- Written by Stephane Carrez (Stephane.Carrez@gmail.com)
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-----------------------------------------------------------------------
with Util.Streams.Files;
with Ada.Streams;
with Ada.Streams.Stream_IO;
with Ada.Exceptions;
with Ada.IO_Exceptions;
package body Util.Serialize.IO is
-- use Util.Log;
use type Util.Log.Loggers.Logger_Access;
-- The logger'
Log : aliased constant Util.Log.Loggers.Logger := Util.Log.Loggers.Create ("Util.Serialize.IO",
Util.Log.WARN_LEVEL);
procedure Write_Attribute (Stream : in out Output_Stream'Class;
Name : in String;
Value : in Ada.Strings.Unbounded.Unbounded_String) is
begin
Stream.Write_Attribute (Name, Ada.Strings.Unbounded.To_String (Value));
end Write_Attribute;
procedure Write_Entity (Stream : in out Output_Stream'Class;
Name : in String;
Value : in Ada.Strings.Unbounded.Unbounded_String) is
begin
Stream.Write_Entity (Name, Ada.Strings.Unbounded.To_String (Value));
end Write_Entity;
procedure Write_Entity (Stream : in out Output_Stream'Class;
Name : in String;
Value : in Util.Nullables.Nullable_String) is
begin
if Value.Is_Null then
Stream.Write_Null_Entity (Name);
else
Stream.Write_Entity (Name, Value.Value);
end if;
end Write_Entity;
procedure Write_Entity (Stream : in out Output_Stream'Class;
Name : in String;
Value : in Util.Nullables.Nullable_Time) is
begin
if Value.Is_Null then
Stream.Write_Null_Entity (Name);
else
Stream.Write_Entity (Name, Value.Value);
end if;
end Write_Entity;
procedure Write_Entity (Stream : in out Output_Stream'Class;
Name : in String;
Value : in Util.Nullables.Nullable_Boolean) is
begin
if Value.Is_Null then
Stream.Write_Null_Entity (Name);
else
Stream.Write_Entity (Name, Value.Value);
end if;
end Write_Entity;
procedure Write_Entity (Stream : in out Output_Stream'Class;
Name : in String;
Value : in Util.Nullables.Nullable_Integer) is
begin
if Value.Is_Null then
Stream.Write_Null_Entity (Name);
else
Stream.Write_Entity (Name, Value.Value);
end if;
end Write_Entity;
procedure Write_Entity (Stream : in out Output_Stream'Class;
Name : in String;
Value : in Util.Nullables.Nullable_Long) is
begin
if Value.Is_Null then
Stream.Write_Null_Entity (Name);
else
Stream.Write_Entity (Name, Integer (Value.Value));
end if;
end Write_Entity;
-- ------------------------------
-- Read the file and parse it using the JSON parser.
-- ------------------------------
procedure Parse (Handler : in out Parser;
File : in String;
Sink : in out Reader'Class) is
Stream : aliased Util.Streams.Files.File_Stream;
Buffer : Util.Streams.Buffered.Input_Buffer_Stream;
begin
if Handler.Error_Logger = null then
Handler.Error_Logger := Log'Access;
end if;
Handler.Error_Logger.Info ("Reading file {0}", File);
Handler.File := Ada.Strings.Unbounded.To_Unbounded_String (File);
Buffer.Initialize (Input => Stream'Unchecked_Access,
Size => 1024);
Stream.Open (Mode => Ada.Streams.Stream_IO.In_File, Name => File);
Sink.Start_Document;
Parser'Class (Handler).Parse (Buffer, Sink);
exception
-- when Util.Serialize.Mappers.Field_Fatal_Error =>
-- null;
when Ada.IO_Exceptions.Name_Error =>
Parser'Class (Handler).Error ("File '" & File & "' does not exist.");
when E : others =>
if not Handler.Error_Flag then
Parser'Class (Handler).Error ("Exception " & Ada.Exceptions.Exception_Name (E));
end if;
end Parse;
-- ------------------------------
-- Parse the content string.
-- ------------------------------
procedure Parse_String (Handler : in out Parser;
Content : in String;
Sink : in out Reader'Class) is
Stream : aliased Util.Streams.Buffered.Input_Buffer_Stream;
begin
if Handler.Error_Logger = null then
Handler.Error_Logger := Log'Access;
end if;
Handler.File := Ada.Strings.Unbounded.To_Unbounded_String ("<inline>");
Stream.Initialize (Content => Content);
Sink.Start_Document;
Parser'Class (Handler).Parse (Stream, Sink);
exception
-- when Util.Serialize.Mappers.Field_Fatal_Error =>
-- null;
when E : others =>
if not Handler.Error_Flag then
Parser'Class (Handler).Error ("Exception " & Ada.Exceptions.Exception_Name (E));
end if;
end Parse_String;
-- ------------------------------
-- Returns true if the <b>Parse</b> operation detected at least one error.
-- ------------------------------
function Has_Error (Handler : in Parser) return Boolean is
begin
return Handler.Error_Flag;
end Has_Error;
-- ------------------------------
-- Set the error logger to report messages while parsing and reading the input file.
-- ------------------------------
procedure Set_Logger (Handler : in out Parser;
Logger : in Util.Log.Loggers.Logger_Access) is
begin
Handler.Error_Logger := Logger;
end Set_Logger;
-- ------------------------------
-- Get the current location (file and line) to report an error message.
-- ------------------------------
function Get_Location (Handler : in Parser) return String is
begin
return Ada.Strings.Unbounded.To_String (Handler.File);
end Get_Location;
-- ------------------------------
-- Report an error while parsing the input stream. The error message will be reported
-- on the logger associated with the parser. The parser will be set as in error so that
-- the <b>Has_Error</b> function will return True after parsing the whole file.
-- ------------------------------
procedure Error (Handler : in out Parser;
Message : in String) is
begin
Handler.Error_Logger.Error ("{0}: {1}",
Parser'Class (Handler).Get_Location,
Message);
Handler.Error_Flag := True;
end Error;
end Util.Serialize.IO;
|