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JSON-java/src/main/java/org/json/JSONML.java at master · zhangfy068/JSON-java · GitHub
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package
org
.
json
;
/*
Copyright (c) 2008 JSON.org
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
The Software shall be used for Good, not Evil.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
/**
* This provides static methods to convert an XML text into a JSONArray or
* JSONObject, and to covert a JSONArray or JSONObject into an XML text using
* the JsonML transform.
*
* @author JSON.org
* @version 2016-01-30
*/
public
class
JSONML
{
/**
* Parse XML values and store them in a JSONArray.
* @param x The XMLTokener containing the source string.
* @param arrayForm true if array form, false if object form.
* @param ja The JSONArray that is containing the current tag or null
* if we are at the outermost level.
* @param keepStrings Don't type-convert text nodes and attribute values
* @return A JSONArray if the value is the outermost tag, otherwise null.
* @throws JSONException if a parsing error occurs
*/
private
static
Object
parse
(
XMLTokener
x
,
boolean
arrayForm
,
JSONArray
ja
,
boolean
keepStrings
)
throws
JSONException
{
String
attribute
;
char
c
;
String
closeTag
=
null
;
int
i
;
JSONArray
newja
=
null
;
JSONObject
newjo
=
null
;
Object
token
;
String
tagName
=
null
;
// Test for and skip past these forms:
// <!-- ... -->
// <![ ... ]]>
// <! ... >
// <? ... ?>
while
(
true
) {
if
(!
x
.
more
()) {
throw
x
.
syntaxError
(
"Bad XML"
);
}
token
=
x
.
nextContent
();
if
(
token
==
XML
.
LT
) {
token
=
x
.
nextToken
();
if
(
token
instanceof
Character
) {
if
(
token
==
XML
.
SLASH
) {
// Close tag </
token
=
x
.
nextToken
();
if
(!(
token
instanceof
String
)) {
throw
new
JSONException
(
"Expected a closing name instead of '"
+
token
+
"'."
);
}
if
(
x
.
nextToken
() !=
XML
.
GT
) {
throw
x
.
syntaxError
(
"Misshaped close tag"
);
}
return
token
;
}
else
if
(
token
==
XML
.
BANG
) {
// <!
c
=
x
.
next
();
if
(
c
==
'-'
) {
if
(
x
.
next
() ==
'-'
) {
x
.
skipPast
(
"-->"
);
}
else
{
x
.
back
();
}
}
else
if
(
c
==
'['
) {
token
=
x
.
nextToken
();
if
(
token
.
equals
(
"CDATA"
) &&
x
.
next
() ==
'['
) {
if
(
ja
!=
null
) {
ja
.
put
(
x
.
nextCDATA
());
}
}
else
{
throw
x
.
syntaxError
(
"Expected 'CDATA['"
);
}
}
else
{
i
=
1
;
do
{
token
=
x
.
nextMeta
();
if
(
token
==
null
) {
throw
x
.
syntaxError
(
"Missing '>' after '<!'."
);
}
else
if
(
token
==
XML
.
LT
) {
i
+=
1
;
}
else
if
(
token
==
XML
.
GT
) {
i
-=
1
;
}
}
while
(
i
>
0
);
}
}
else
if
(
token
==
XML
.
QUEST
) {
// <?
x
.
skipPast
(
"?>"
);
}
else
{
throw
x
.
syntaxError
(
"Misshaped tag"
);
}
// Open tag <
}
else
{
if
(!(
token
instanceof
String
)) {
throw
x
.
syntaxError
(
"Bad tagName '"
+
token
+
"'."
);
}
tagName
= (
String
)
token
;
newja
=
new
JSONArray
();
newjo
=
new
JSONObject
();
if
(
arrayForm
) {
newja
.
put
(
tagName
);
if
(
ja
!=
null
) {
ja
.
put
(
newja
);
}
}
else
{
newjo
.
put
(
"tagName"
,
tagName
);
if
(
ja
!=
null
) {
ja
.
put
(
newjo
);
}
}
token
=
null
;
for
(;;) {
if
(
token
==
null
) {
token
=
x
.
nextToken
();
}
if
(
token
==
null
) {
throw
x
.
syntaxError
(
"Misshaped tag"
);
}
if
(!(
token
instanceof
String
)) {
break
;
}
// attribute = value
attribute
= (
String
)
token
;
if
(!
arrayForm
&& (
"tagName"
.
equals
(
attribute
) ||
"childNode"
.
equals
(
attribute
))) {
throw
x
.
syntaxError
(
"Reserved attribute."
);
}
token
=
x
.
nextToken
();
if
(
token
==
XML
.
EQ
) {
token
=
x
.
nextToken
();
if
(!(
token
instanceof
String
)) {
throw
x
.
syntaxError
(
"Missing value"
);
}
newjo
.
accumulate
(
attribute
,
keepStrings
? ((
String
)
token
) :
XML
.
stringToValue
((
String
)
token
));
token
=
null
;
}
else
{
newjo
.
accumulate
(
attribute
,
""
);
}
}
if
(
arrayForm
&&
newjo
.
length
() >
0
) {
newja
.
put
(
newjo
);
}
// Empty tag <.../>
if
(
token
==
XML
.
SLASH
) {
if
(
x
.
nextToken
() !=
XML
.
GT
) {
throw
x
.
syntaxError
(
"Misshaped tag"
);
}
if
(
ja
==
null
) {
if
(
arrayForm
) {
return
newja
;
}
return
newjo
;
}
// Content, between <...> and </...>
}
else
{
if
(
token
!=
XML
.
GT
) {
throw
x
.
syntaxError
(
"Misshaped tag"
);
}
closeTag
= (
String
)
parse
(
x
,
arrayForm
,
newja
,
keepStrings
);
if
(
closeTag
!=
null
) {
if
(!
closeTag
.
equals
(
tagName
)) {
throw
x
.
syntaxError
(
"Mismatched '"
+
tagName
+
"' and '"
+
closeTag
+
"'"
);
}
tagName
=
null
;
if
(!
arrayForm
&&
newja
.
length
() >
0
) {
newjo
.
put
(
"childNodes"
,
newja
);
}
if
(
ja
==
null
) {
if
(
arrayForm
) {
return
newja
;
}
return
newjo
;
}
}
}
}
}
else
{
if
(
ja
!=
null
) {
ja
.
put
(
token
instanceof
String
?
keepStrings
?
XML
.
unescape
((
String
)
token
) :
XML
.
stringToValue
((
String
)
token
)
:
token
);
}
}
}
}
/**
* Convert a well-formed (but not necessarily valid) XML string into a
* JSONArray using the JsonML transform. Each XML tag is represented as
* a JSONArray in which the first element is the tag name. If the tag has
* attributes, then the second element will be JSONObject containing the
* name/value pairs. If the tag contains children, then strings and
* JSONArrays will represent the child tags.
* Comments, prologs, DTDs, and <pre>{@code <[ [ ]]>}</pre> are ignored.
* @param string The source string.
* @return A JSONArray containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONArray
*/
public
static
JSONArray
toJSONArray
(
String
string
)
throws
JSONException
{
return
(
JSONArray
)
parse
(
new
XMLTokener
(
string
),
true
,
null
,
false
);
}
/**
* Convert a well-formed (but not necessarily valid) XML string into a
* JSONArray using the JsonML transform. Each XML tag is represented as
* a JSONArray in which the first element is the tag name. If the tag has
* attributes, then the second element will be JSONObject containing the
* name/value pairs. If the tag contains children, then strings and
* JSONArrays will represent the child tags.
* As opposed to toJSONArray this method does not attempt to convert
* any text node or attribute value to any type
* but just leaves it as a string.
* Comments, prologs, DTDs, and <pre>{@code <[ [ ]]>}</pre> are ignored.
* @param string The source string.
* @param keepStrings If true, then values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONArray containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONArray
*/
public
static
JSONArray
toJSONArray
(
String
string
,
boolean
keepStrings
)
throws
JSONException
{
return
(
JSONArray
)
parse
(
new
XMLTokener
(
string
),
true
,
null
,
keepStrings
);
}
/**
* Convert a well-formed (but not necessarily valid) XML string into a
* JSONArray using the JsonML transform. Each XML tag is represented as
* a JSONArray in which the first element is the tag name. If the tag has
* attributes, then the second element will be JSONObject containing the
* name/value pairs. If the tag contains children, then strings and
* JSONArrays will represent the child content and tags.
* As opposed to toJSONArray this method does not attempt to convert
* any text node or attribute value to any type
* but just leaves it as a string.
* Comments, prologs, DTDs, and <pre>{@code <[ [ ]]>}</pre> are ignored.
* @param x An XMLTokener.
* @param keepStrings If true, then values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONArray containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONArray
*/
public
static
JSONArray
toJSONArray
(
XMLTokener
x
,
boolean
keepStrings
)
throws
JSONException
{
return
(
JSONArray
)
parse
(
x
,
true
,
null
,
keepStrings
);
}
/**
* Convert a well-formed (but not necessarily valid) XML string into a
* JSONArray using the JsonML transform. Each XML tag is represented as
* a JSONArray in which the first element is the tag name. If the tag has
* attributes, then the second element will be JSONObject containing the
* name/value pairs. If the tag contains children, then strings and
* JSONArrays will represent the child content and tags.
* Comments, prologs, DTDs, and <pre>{@code <[ [ ]]>}</pre> are ignored.
* @param x An XMLTokener.
* @return A JSONArray containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONArray
*/
public
static
JSONArray
toJSONArray
(
XMLTokener
x
)
throws
JSONException
{
return
(
JSONArray
)
parse
(
x
,
true
,
null
,
false
);
}
/**
* Convert a well-formed (but not necessarily valid) XML string into a
* JSONObject using the JsonML transform. Each XML tag is represented as
* a JSONObject with a "tagName" property. If the tag has attributes, then
* the attributes will be in the JSONObject as properties. If the tag
* contains children, the object will have a "childNodes" property which
* will be an array of strings and JsonML JSONObjects.
* Comments, prologs, DTDs, and <pre>{@code <[ [ ]]>}</pre> are ignored.
* @param string The XML source text.
* @return A JSONObject containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONObject
*/
public
static
JSONObject
toJSONObject
(
String
string
)
throws
JSONException
{
return
(
JSONObject
)
parse
(
new
XMLTokener
(
string
),
false
,
null
,
false
);
}
/**
* Convert a well-formed (but not necessarily valid) XML string into a
* JSONObject using the JsonML transform. Each XML tag is represented as
* a JSONObject with a "tagName" property. If the tag has attributes, then
* the attributes will be in the JSONObject as properties. If the tag
* contains children, the object will have a "childNodes" property which
* will be an array of strings and JsonML JSONObjects.
* Comments, prologs, DTDs, and <pre>{@code <[ [ ]]>}</pre> are ignored.
* @param string The XML source text.
* @param keepStrings If true, then values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONObject containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONObject
*/
public
static
JSONObject
toJSONObject
(
String
string
,
boolean
keepStrings
)
throws
JSONException
{
return
(
JSONObject
)
parse
(
new
XMLTokener
(
string
),
false
,
null
,
keepStrings
);
}
/**
* Convert a well-formed (but not necessarily valid) XML string into a
* JSONObject using the JsonML transform. Each XML tag is represented as
* a JSONObject with a "tagName" property. If the tag has attributes, then
* the attributes will be in the JSONObject as properties. If the tag
* contains children, the object will have a "childNodes" property which
* will be an array of strings and JsonML JSONObjects.
* Comments, prologs, DTDs, and <pre>{@code <[ [ ]]>}</pre> are ignored.
* @param x An XMLTokener of the XML source text.
* @return A JSONObject containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONObject
*/
public
static
JSONObject
toJSONObject
(
XMLTokener
x
)
throws
JSONException
{
return
(
JSONObject
)
parse
(
x
,
false
,
null
,
false
);
}
/**
* Convert a well-formed (but not necessarily valid) XML string into a
* JSONObject using the JsonML transform. Each XML tag is represented as
* a JSONObject with a "tagName" property. If the tag has attributes, then
* the attributes will be in the JSONObject as properties. If the tag
* contains children, the object will have a "childNodes" property which
* will be an array of strings and JsonML JSONObjects.
* Comments, prologs, DTDs, and <pre>{@code <[ [ ]]>}</pre> are ignored.
* @param x An XMLTokener of the XML source text.
* @param keepStrings If true, then values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONObject containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONObject
*/
public
static
JSONObject
toJSONObject
(
XMLTokener
x
,
boolean
keepStrings
)
throws
JSONException
{
return
(
JSONObject
)
parse
(
x
,
false
,
null
,
keepStrings
);
}
/**
* Reverse the JSONML transformation, making an XML text from a JSONArray.
* @param ja A JSONArray.
* @return An XML string.
* @throws JSONException Thrown on error converting to a string
*/
public
static
String
toString
(
JSONArray
ja
)
throws
JSONException
{
int
i
;
JSONObject
jo
;
int
length
;
Object
object
;
StringBuilder
sb
=
new
StringBuilder
();
String
tagName
;
// Emit <tagName
tagName
=
ja
.
getString
(
0
);
XML
.
noSpace
(
tagName
);
tagName
=
XML
.
escape
(
tagName
);
sb
.
append
(
'<'
);
sb
.
append
(
tagName
);
object
=
ja
.
opt
(
1
);
if
(
object
instanceof
JSONObject
) {
i
=
2
;
jo
= (
JSONObject
)
object
;
// Emit the attributes
// Don't use the new entrySet API to maintain Android support
for
(
final
String
key
:
jo
.
keySet
()) {
final
Object
value
=
jo
.
opt
(
key
);
XML
.
noSpace
(
key
);
if
(
value
!=
null
) {
sb
.
append
(
' '
);
sb
.
append
(
XML
.
escape
(
key
));
sb
.
append
(
'='
);
sb
.
append
(
'"'
);
sb
.
append
(
XML
.
escape
(
value
.
toString
()));
sb
.
append
(
'"'
);
}
}
}
else
{
i
=
1
;
}
// Emit content in body
length
=
ja
.
length
();
if
(
i
>=
length
) {
sb
.
append
(
'/'
);
sb
.
append
(
'>'
);
}
else
{
sb
.
append
(
'>'
);
do
{
object
=
ja
.
get
(
i
);
i
+=
1
;
if
(
object
!=
null
) {
if
(
object
instanceof
String
) {
sb
.
append
(
XML
.
escape
(
object
.
toString
()));
}
else
if
(
object
instanceof
JSONObject
) {
sb
.
append
(
toString
((
JSONObject
)
object
));
}
else
if
(
object
instanceof
JSONArray
) {
sb
.
append
(
toString
((
JSONArray
)
object
));
}
else
{
sb
.
append
(
object
.
toString
());
}
}
}
while
(
i
<
length
);
sb
.
append
(
'<'
);
sb
.
append
(
'/'
);
sb
.
append
(
tagName
);
sb
.
append
(
'>'
);
}
return
sb
.
toString
();
}
/**
* Reverse the JSONML transformation, making an XML text from a JSONObject.
* The JSONObject must contain a "tagName" property. If it has children,
* then it must have a "childNodes" property containing an array of objects.
* The other properties are attributes with string values.
* @param jo A JSONObject.
* @return An XML string.
* @throws JSONException Thrown on error converting to a string
*/
public
static
String
toString
(
JSONObject
jo
)
throws
JSONException
{
StringBuilder
sb
=
new
StringBuilder
();
int
i
;
JSONArray
ja
;
int
length
;
Object
object
;
String
tagName
;
Object
value
;
//Emit <tagName
tagName
=
jo
.
optString
(
"tagName"
);
if
(
tagName
==
null
) {
return
XML
.
escape
(
jo
.
toString
());
}
XML
.
noSpace
(
tagName
);
tagName
=
XML
.
escape
(
tagName
);
sb
.
append
(
'<'
);
sb
.
append
(
tagName
);
//Emit the attributes
// Don't use the new entrySet API to maintain Android support
for
(
final
String
key
:
jo
.
keySet
()) {
if
(!
"tagName"
.
equals
(
key
) && !
"childNodes"
.
equals
(
key
)) {
XML
.
noSpace
(
key
);
value
=
jo
.
opt
(
key
);
if
(
value
!=
null
) {
sb
.
append
(
' '
);
sb
.
append
(
XML
.
escape
(
key
));
sb
.
append
(
'='
);
sb
.
append
(
'"'
);
sb
.
append
(
XML
.
escape
(
value
.
toString
()));
sb
.
append
(
'"'
);
}
}
}
//Emit content in body
ja
=
jo
.
optJSONArray
(
"childNodes"
);
if
(
ja
==
null
) {
sb
.
append
(
'/'
);
sb
.
append
(
'>'
);
}
else
{
sb
.
append
(
'>'
);
length
=
ja
.
length
();
for
(
i
=
0
;
i
<
length
;
i
+=
1
) {
object
=
ja
.
get
(
i
);
if
(
object
!=
null
) {
if
(
object
instanceof
String
) {
sb
.
append
(
XML
.
escape
(
object
.
toString
()));
}
else
if
(
object
instanceof
JSONObject
) {
sb
.
append
(
toString
((
JSONObject
)
object
));
}
else
if
(
object
instanceof
JSONArray
) {
sb
.
append
(
toString
((
JSONArray
)
object
));
}
else
{
sb
.
append
(
object
.
toString
());
}
}
}
sb
.
append
(
'<'
);
sb
.
append
(
'/'
);
sb
.
append
(
tagName
);
sb
.
append
(
'>'
);
}
return
sb
.
toString
();
}
}
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