erik/JSON-java
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XML.stringToValue

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This commit is contained in:
Douglas Crockford 2010-12-23 12:41:23 -08:00
parent 68de4feaec
commit f284477cff
2 changed files with 60 additions and 6 deletions
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6
JSONML.java
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@ -32,7 +32,7 @@ import java.util.Iterator;
* JSONObject, and to covert a JSONArray or JSONObject into an XML text using
* the JsonML transform.
* @author JSON.org
* @version 2010-02-12
* @version 2010-12-23
*/
public class JSONML {
@ -166,7 +166,7 @@ public class JSONML {
if (!(token instanceof String)) {
throw x.syntaxError("Missing value");
}
newjo.accumulate(attribute, JSONObject.stringToValue((String)token));
newjo.accumulate(attribute, XML.stringToValue((String)token));
token = null;
} else {
newjo.accumulate(attribute, "");
@ -219,7 +219,7 @@ public class JSONML {
} else {
if (ja != null) {
ja.put(token instanceof String ?
JSONObject.stringToValue((String)token) : token);
XML.stringToValue((String)token) : token);
}
}
}

60
XML.java
View file

@ -31,7 +31,7 @@ import java.util.Iterator;
* This provides static methods to convert an XML text into a JSONObject,
* and to covert a JSONObject into an XML text.
* @author JSON.org
* @version 2010-04-08
* @version 2010-12-23
*/
public class XML {
@ -226,7 +226,7 @@ public class XML {
if (!(t instanceof String)) {
throw x.syntaxError("Missing value");
}
o.accumulate(s, JSONObject.stringToValue((String)t));
o.accumulate(s, XML.stringToValue((String)t));
t = null;
} else {
o.accumulate(s, "");
@ -258,7 +258,7 @@ public class XML {
} else if (t instanceof String) {
s = (String)t;
if (s.length() > 0) {
o.accumulate("content", JSONObject.stringToValue(s));
o.accumulate("content", XML.stringToValue(s));
}
// Nested element
@ -285,6 +285,60 @@ public class XML {
}
/**
* Try to convert a string into a number, boolean, or null. If the string
* can't be converted, return the string. This is much less ambitious than
* JSONObject.stringToValue, especially because it does not attempt to
* convert plus forms, octal forms, hex forms, or E forms lacking decimal
* points.
* @param string A String.
* @return A simple JSON value.
*/
public static Object stringToValue(String string) {
if (string.equals("")) {
return string;
}
if (string.equalsIgnoreCase("true")) {
return Boolean.TRUE;
}
if (string.equalsIgnoreCase("false")) {
return Boolean.FALSE;
}
if (string.equalsIgnoreCase("null")) {
return JSONObject.NULL;
}
// If it might be a number, try converting it. If that doesn't work,
// return the string.
try {
char initial = string.charAt(0);
boolean negative = false;
if (initial == '-') {
initial = string.charAt(1);
negative = true;
}
if (initial == '0' && string.charAt(negative ? 2 : 1) == '0') {
return string;
}
if ((initial >= '0' && initial <= '9')) {
if (string.indexOf('.') >= 0) {
return Double.valueOf(string);
} else if (string.indexOf('e') < 0 && string.indexOf('E') < 0) {
Long myLong = new Long(string);
if (myLong.longValue() == myLong.intValue()) {
return new Integer(myLong.intValue());
} else {
return myLong;
}
}
}
} catch (Exception ignore) {
}
return string;
}
/**
* Convert a well-formed (but not necessarily valid) XML string into a
* JSONObject. Some information may be lost in this transformation