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implab » ImplabNet
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Added XmlToJson xsl transformation....
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r264:3a6e18c432be v3
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@@ -0,0 +1,20
1 using System.Xml.Serialization;
2
3 namespace Implab.Test.Model {
4
5 [XmlRoot(Namespace="urn:implab:test:model")]
6 public class Person {
7 public string FirstName { get; set; }
8
9 public string LastName { get; set; }
10
11 public int Age { get; set; }
12
13 [XmlIgnore]
14 public bool AgeSpecified { get; set; }
15
16
17 [XmlElement("Tag")]
18 public string[] Tags { get; set; }
19 }
20 } No newline at end of file
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@@ -0,0 +1,33
1 using System;
2 using System.IO;
3 using System.Reflection;
4 using System.Xml;
5 using System.Xml.Xsl;
6 using Implab.Components;
7 using Implab.Formats.Json;
8
9 namespace Implab.Xml {
10 public class XmlToJson {
11 const string XmlToJsonTransformId = "Implab.Xml.json.xsl";
12
13 static LazyAndWeak<XslCompiledTransform> m_default = new LazyAndWeak<XslCompiledTransform>(CreateTransform, true);
14
15 public static XslCompiledTransform Default {
16 get { return m_default.Value; }
17 }
18
19 protected static XslCompiledTransform CreateTransform() {
20 var transform = new XslCompiledTransform();
21 using(var reader = XmlReader.Create(GetDefaultTransform())) {
22 transform.Load(reader);
23 }
24 return transform;
25 }
26
27 protected static Stream GetDefaultTransform() {
28 return Assembly.GetExecutingAssembly().GetManifestResourceStream(XmlToJsonTransformId);
29 }
30
31
32 }
33 } No newline at end of file
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@@ -0,0 +1,252
1 <?xml version="1.0" encoding="UTF-8"?>
2 <xsl:stylesheet version="1.0"
3 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
4 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
5 xmlns:exsl="http://exslt.org/common">
6 <xsl:output method="text" />
7
8 <xsl:template match="/">
9 <xsl:apply-templates mode="json-value" />
10 </xsl:template>
11
12
13 <!-- handle json-object -->
14
15 <xsl:template match="*" mode="json-object">
16 <xsl:call-template name="write-members"/>
17 </xsl:template>
18
19 <xsl:template match="*|@*" mode="json-member">
20 <xsl:param name="values" select="."/>
21 <xsl:call-template name="write-string">
22 <xsl:with-param name="text"><xsl:apply-templates select="." mode="json-member-name"/></xsl:with-param>
23 </xsl:call-template>
24 <xsl:text> : </xsl:text>
25 <xsl:apply-templates select="." mode="json-member-value">
26 <xsl:with-param name="values" select="$values"/>
27 </xsl:apply-templates>
28 </xsl:template>
29
30 <xsl:template match="*" mode="json-member-name">
31 <xsl:value-of select="local-name(.)"/>
32 </xsl:template>
33
34 <xsl:template match="@*" mode="json-member-name">
35 <xsl:value-of select="concat('_',local-name(.))"/>
36 </xsl:template>
37
38 <xsl:template match="*|@*" mode="json-member-value">
39 <xsl:param name="values" select="."/>
40 <xsl:choose>
41 <xsl:when test="count($values) > 1">
42 <xsl:call-template name="write-array">
43 <xsl:with-param name="values" select="$values"/>
44 </xsl:call-template>
45 </xsl:when>
46 <xsl:otherwise>
47 <xsl:apply-templates select="$values" mode="json-value"/>
48 </xsl:otherwise>
49 </xsl:choose>
50 </xsl:template>
51
52 <xsl:template match="*|@*" mode="json-array-item">
53 <xsl:apply-templates select="." mode="json-value"/>
54 <xsl:if test="position() != last()">
55 <xsl:text>, </xsl:text>
56 </xsl:if>
57 </xsl:template>
58
59 <!-- handle json-value -->
60
61 <xsl:template match="text()[. = 'true'] | @*[. = 'true']" mode="json-value">
62 <xsl:text>true</xsl:text>
63 </xsl:template>
64
65 <xsl:template match="text()[. = 'false'] | @*[. = 'false']"
66 mode="json-value">
67 <xsl:text>false</xsl:text>
68 </xsl:template>
69
70 <xsl:template match="text()[string(number(.)) != 'NaN'] | @*[string(number(.)) != 'NaN']"
71 mode="json-value">
72 <xsl:value-of select="number(.)" />
73 </xsl:template>
74
75 <xsl:template match="text()|@*" mode="json-value">
76 <xsl:call-template name="write-string">
77 <xsl:with-param name="text" select="."/>
78 </xsl:call-template>
79 </xsl:template>
80
81 <xsl:template match="*[boolean(* | @*) or not(text())]" mode="json-value">
82 <xsl:call-template name="write-object"/>
83 </xsl:template>
84
85 <xsl:template match="*[@xsi:nil = 'true']" mode="json-value">
86 <xsl:text>null</xsl:text>
87 </xsl:template>
88
89 <!-- template traits -->
90
91 <xsl:template name="write-value">
92 <xsl:param name="value" select="."/>
93 <xsl:apply-templates select="$value" mode="json-value"/>
94 </xsl:template>
95
96 <xsl:template name="write-member">
97 <xsl:param name="name"/>
98 <xsl:param name="value"/>
99 <xsl:call-template name="write-string">
100 <xsl:with-param name="text" select="$name"/>
101 </xsl:call-template>
102 <xsl:text> : </xsl:text>
103 <xsl:apply-templates select="$value" mode="json-value"/>
104 </xsl:template>
105
106 <xsl:template name="write-member-string">
107 <xsl:param name="name"/>
108 <xsl:param name="value"/>
109 <xsl:call-template name="write-string">
110 <xsl:with-param name="text" select="$name"/>
111 </xsl:call-template>
112 <xsl:text> : </xsl:text>
113 <xsl:call-template name="write-string">
114 <xsl:with-param name="text" select="$value"/>
115 </xsl:call-template>
116 </xsl:template>
117
118 <xsl:template name="write-member-array">
119 <xsl:param name="name"/>
120 <xsl:param name="values"/>
121 <xsl:call-template name="write-string">
122 <xsl:with-param name="text" select="$name"/>
123 </xsl:call-template>
124 <xsl:text> : </xsl:text>
125 <xsl:call-template name="write-array">
126 <xsl:with-param name="values" select="$values"/>
127 </xsl:call-template>
128 </xsl:template>
129
130 <xsl:template name="write-separator">
131 <xsl:text>, </xsl:text>
132 </xsl:template>
133
134 <!-- specialized template traits -->
135
136 <xsl:template name="write-string">
137 <xsl:param name="text"/>
138 <xsl:text>&quot;</xsl:text>
139 <xsl:call-template name="escape-bs-string">
140 <xsl:with-param name="s" select="$text"/>
141 </xsl:call-template>
142 <xsl:text>&quot;</xsl:text>
143 </xsl:template>
144
145 <xsl:template name="write-object">
146 <xsl:param name="value" select="."/>
147 <xsl:text>{ </xsl:text>
148 <xsl:apply-templates select="$value" mode="json-object"/>
149 <xsl:text> }</xsl:text>
150 </xsl:template>
151
152 <xsl:template name="write-array">
153 <xsl:param name="values"/>
154
155 <xsl:text>[ </xsl:text>
156 <xsl:apply-templates select="$values" mode="json-array-item"/>
157 <xsl:text> ]</xsl:text>
158 </xsl:template>
159
160 <xsl:template name="write-members">
161 <xsl:param name="members" select="*"/>
162
163 <xsl:for-each select="$members">
164 <xsl:variable name="current" select="."/>
165 <xsl:variable name="values" select="$members[local-name(.) = local-name($current)]"/>
166 <xsl:if test="generate-id($current) = generate-id($values)">
167 <xsl:if test="position()>1">
168 <xsl:call-template name="write-separator"/>
169 </xsl:if>
170 <xsl:apply-templates select="$current" mode="json-member">
171 <xsl:with-param name="values" select="$values"/>
172 </xsl:apply-templates>
173 </xsl:if>
174 </xsl:for-each>
175 </xsl:template>
176
177 <!-- escape string -->
178 <!--
179 Copyright (c) 2006,2008 Doeke Zanstra
180 All rights reserved.
181 https://github.com/doekman/xml2json-xslt/blob/master/xml2json.xslt
182 -->
183 <!-- Escape the backslash (\) before everything else. -->
184 <xsl:template name="escape-bs-string">
185 <xsl:param name="s"/>
186 <xsl:choose>
187 <xsl:when test="contains($s,'\')">
188 <xsl:call-template name="escape-quot-string">
189 <xsl:with-param name="s" select="concat(substring-before($s,'\'),'\\')"/>
190 </xsl:call-template>
191 <xsl:call-template name="escape-bs-string">
192 <xsl:with-param name="s" select="substring-after($s,'\')"/>
193 </xsl:call-template>
194 </xsl:when>
195 <xsl:otherwise>
196 <xsl:call-template name="escape-quot-string">
197 <xsl:with-param name="s" select="$s"/>
198 </xsl:call-template>
199 </xsl:otherwise>
200 </xsl:choose>
201 </xsl:template>
202
203 <!-- Escape the double quote ("). -->
204 <xsl:template name="escape-quot-string">
205 <xsl:param name="s"/>
206 <xsl:choose>
207 <xsl:when test="contains($s,'&quot;')">
208 <xsl:call-template name="encode-string">
209 <xsl:with-param name="s" select="concat(substring-before($s,'&quot;'),'\&quot;')"/>
210 </xsl:call-template>
211 <xsl:call-template name="escape-quot-string">
212 <xsl:with-param name="s" select="substring-after($s,'&quot;')"/>
213 </xsl:call-template>
214 </xsl:when>
215 <xsl:otherwise>
216 <xsl:call-template name="encode-string">
217 <xsl:with-param name="s" select="$s"/>
218 </xsl:call-template>
219 </xsl:otherwise>
220 </xsl:choose>
221 </xsl:template>
222
223 <!-- Replace tab, line feed and/or carriage return by its matching escape code. Can't escape backslash
224 or double quote here, because they don't replace characters (&#x0; becomes \t), but they prefix
225 characters (\ becomes \\). Besides, backslash should be seperate anyway, because it should be
226 processed first. This function can't do that. -->
227 <xsl:template name="encode-string">
228 <xsl:param name="s"/>
229 <xsl:choose>
230 <!-- tab -->
231 <xsl:when test="contains($s,'&#x9;')">
232 <xsl:call-template name="encode-string">
233 <xsl:with-param name="s" select="concat(substring-before($s,'&#x9;'),'\t',substring-after($s,'&#x9;'))"/>
234 </xsl:call-template>
235 </xsl:when>
236 <!-- line feed -->
237 <xsl:when test="contains($s,'&#xA;')">
238 <xsl:call-template name="encode-string">
239 <xsl:with-param name="s" select="concat(substring-before($s,'&#xA;'),'\n',substring-after($s,'&#xA;'))"/>
240 </xsl:call-template>
241 </xsl:when>
242 <!-- carriage return -->
243 <xsl:when test="contains($s,'&#xD;')">
244 <xsl:call-template name="encode-string">
245 <xsl:with-param name="s" select="concat(substring-before($s,'&#xD;'),'\r',substring-after($s,'&#xD;'))"/>
246 </xsl:call-template>
247 </xsl:when>
248 <xsl:otherwise><xsl:value-of select="$s"/></xsl:otherwise>
249 </xsl:choose>
250 </xsl:template>
251
252 </xsl:stylesheet> No newline at end of file
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@@ -0,0 +1,4
1 XML to JSON transform is taken from different project https://hg.implab.org/pub/ModelGenerator/
2 run:
3 wget https://hg.implab.org/pub/ModelGenerator/raw-file/tip/xslt/json.xsl
4 to update to the latest version No newline at end of file
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@@ -6,6 +6,7 using System.Xml;
6 6 using Implab.Formats;
7 7 using Implab.Formats.Json;
8 8 using System.IO;
9 using Implab.Test.Model;
9 10
10 11 namespace Implab.Test {
11 12 public class JsonTests {
@@ -114,6 +115,44 namespace Implab.Test {
114 115 DumpJsonFlatParse("[1,2,\"\",[3,4],{\"info\": [5,6]},{\"num\": [7,8,null]}, null,[null]]");
115 116 }
116 117
118 [Fact]
119 public void XmlToJsonTransform() {
120 var person = new Person {
121 FirstName = "Charlie",
122 LastName = "Brown",
123 Age = 19,
124 AgeSpecified = true
125 };
126
127 var doc = SerializationHelpers.SerializeAsXmlDocument(person);
128
129 using (var writer = new StringWriter()) {
130 XmlToJson.Default.Transform(doc,null, writer);
131 Console.WriteLine(writer.ToString());
132 }
133 }
134
135 [Fact]
136 public void JsonSerialization() {
137 var person = new Person {
138 FirstName = "Charlie",
139 LastName = "Brown",
140 Age = 19,
141 AgeSpecified = true,
142 Tags = new [] { "brave", "stupid" }
143 };
144
145 var data = SerializationHelpers.SerializeJsonAsString(person);
146 Console.WriteLine(data);
147 var clone = SerializationHelpers.DeserializeJsonFromString<Person>(data);
148
149 Assert.Equal(person.FirstName, clone.FirstName);
150 Assert.Equal(person.LastName, clone.LastName);
151 Assert.Equal(person.Age, clone.Age);
152 Assert.Equal(person.AgeSpecified, clone.AgeSpecified);
153 Assert.Equal(person.Tags, person.Tags);
154 }
155
117 156 void AssertRead(XmlReader reader, XmlNodeType expected) {
118 157 Assert.True(reader.Read());
119 158 Console.WriteLine($"{new string(' ', reader.Depth * 2)}{reader}");
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@@ -8,6 +8,7 namespace Implab.Components {
8 8 /// <remarks>
9 9 /// Usefull when dealing with memory-intensive objects which are frequently used.
10 10 /// This class is similar to <see cref="ObjectPool{T}"/> except it is a singleton.
11 /// This class can't be used to hold diposable objects.
11 12 /// </remarks>
12 13 public class LazyAndWeak<T> where T : class {
13 14
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@@ -19,4 +19,8
19 19 <DefineConstants Condition="'$(TargetFramework)'=='net46'">NETFX_TRACE_BUG;$(DefineConstants)</DefineConstants>
20 20 </PropertyGroup>
21 21
22 <ItemGroup>
23 <EmbeddedResource Include="Xml\json.xsl"/>
24 </ItemGroup>
25
22 26 </Project>
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@@ -2,6 +2,7
2 2 using System;
3 3 using System.Collections.Generic;
4 4 using System.Globalization;
5 using System.IO;
5 6 using System.Linq;
6 7 using System.Xml;
7 8
@@ -588,6 +589,12 namespace Implab.Xml {
588 589 return !skip;
589 590 }
590 591
592 protected override void Dispose(bool disposing) {
593 if (disposing)
594 Safe.Dispose(m_parser);
595 base.Dispose(true);
596 }
597
591 598 public override string ToString() {
592 599 switch (NodeType) {
593 600 case XmlNodeType.Element:
@@ -606,5 +613,24 namespace Implab.Xml {
606 613 return $".{NodeType} {Name} {Value}";
607 614 }
608 615 }
616
617 #region static methods
618
619 public static JsonXmlReader CreateJsonXmlReader(TextReader textReader, JsonXmlReaderOptions options = null) {
620 var jsonReader = JsonReader.Create(textReader);
621 return new JsonXmlReader(jsonReader, options);
622 }
623
624 public static JsonXmlReader CreateJsonXmlReader(Stream stream, JsonXmlReaderOptions options = null) {
625 var jsonReader = JsonReader.Create(stream);
626 return new JsonXmlReader(jsonReader, options);
627 }
628
629 public static JsonXmlReader CreateJsonXmlReader(string file, JsonXmlReaderOptions options = null) {
630 var jsonReader = JsonReader.Create(file);
631 return new JsonXmlReader(jsonReader, options);
632 }
633
634 #endregion
609 635 }
610 636 }
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@@ -2,10 +2,12
2 2 using System.Collections.Generic;
3 3 using System.IO;
4 4 using System.Linq;
5 using System.Reflection;
5 6 using System.Text;
6 7 using System.Threading.Tasks;
7 8 using System.Xml;
8 9 using System.Xml.Linq;
10 using System.Xml.Serialization;
9 11
10 12 namespace Implab.Xml {
11 13 public static class SerializationHelpers {
@@ -61,5 +63,34 namespace Implab.Xml {
61 63 using (var reader = node.CreateNavigator().ReadSubtree())
62 64 return SerializersPool<T>.Instance.Deserialize(reader);
63 65 }
66
67 public static T DeserializeJson<T>(TextReader textReader) {
68 var options = new JsonXmlReaderOptions {
69 NamespaceUri = typeof(T).GetCustomAttribute<XmlRootAttribute>()?.Namespace,
70 RootName = typeof(T).Name,
71 FlattenArrays = true
72 };
73
74 using(var reader = JsonXmlReader.CreateJsonXmlReader(textReader, options))
75 return Deserialize<T>(reader);
76 }
77
78 public static T DeserializeJsonFromString<T>(string data) {
79 using(var reader = new StringReader(data)) {
80 return DeserializeJson<T>(reader);
64 81 }
65 82 }
83
84 public static void SerializeJson<T>(TextWriter writer, T obj) {
85 var doc = SerializeAsXmlDocument(obj);
86 XmlToJson.Default.Transform(doc, null, writer);
87 }
88
89 public static string SerializeJsonAsString<T>(T obj) {
90 using(var writer = new StringWriter()) {
91 SerializeJson(writer, obj);
92 return writer.ToString();
93 }
94 }
95 }
96 }
General Comments 3
Under Review
sergey
author
Comment #7
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Auto status change to "Under Review"

Approved
sergey
author
Comment #8
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ok, latest stable version should be in default

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