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Merge pull request #253 from johnjaylward/OptionalTypeConversion
Optional type conversion for XML reading
This commit is contained in:
Sean Leary
GitHub
commit
3080b8beeb
3 changed files with 172 additions and 48 deletions
153
JSONML.java
153
JSONML.java
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@ -36,20 +36,21 @@ import java.util.Iterator;
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* @version 2016-01-30
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*/
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public class JSONML {
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/**
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* Parse XML values and store them in a JSONArray.
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* @param x The XMLTokener containing the source string.
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* @param arrayForm true if array form, false if object form.
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* @param ja The JSONArray that is containing the current tag or null
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* if we are at the outermost level.
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* @param keepStrings Don't type-convert text nodes and attibute values
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* @return A JSONArray if the value is the outermost tag, otherwise null.
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* @throws JSONException
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*/
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private static Object parse(
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XMLTokener x,
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boolean arrayForm,
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JSONArray ja
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JSONArray ja,
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boolean keepStrings
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) throws JSONException {
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String attribute;
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char c;
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@ -174,7 +175,7 @@ public class JSONML {
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if (!(token instanceof String)) {
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throw x.syntaxError("Missing value");
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}
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newjo.accumulate(attribute, JSONObject.stringToValue((String)token));
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newjo.accumulate(attribute, keepStrings ? token :JSONObject.stringToValue((String)token));
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token = null;
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} else {
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newjo.accumulate(attribute, "");
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@ -193,9 +194,8 @@ public class JSONML {
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if (ja == null) {
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if (arrayForm) {
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return newja;
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} else {
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return newjo;
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}
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return newjo;
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}
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// Content, between <...> and </...>
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@ -204,7 +204,7 @@ public class JSONML {
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if (token != XML.GT) {
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throw x.syntaxError("Misshaped tag");
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}
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closeTag = (String)parse(x, arrayForm, newja);
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closeTag = (String)parse(x, arrayForm, newja, keepStrings);
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if (closeTag != null) {
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if (!closeTag.equals(tagName)) {
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throw x.syntaxError("Mismatched '" + tagName +
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@ -217,9 +217,8 @@ public class JSONML {
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if (ja == null) {
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if (arrayForm) {
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return newja;
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} else {
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return newjo;
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}
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return newjo;
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}
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}
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}
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@ -227,7 +226,7 @@ public class JSONML {
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} else {
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if (ja != null) {
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ja.put(token instanceof String
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? JSONObject.stringToValue((String)token)
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? keepStrings ? token :JSONObject.stringToValue((String)token)
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: token);
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}
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}
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@ -245,10 +244,54 @@ public class JSONML {
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param string The source string.
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* @return A JSONArray containing the structured data from the XML string.
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* @throws JSONException
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* @throws JSONException Thrown on error converting to a JSONArray
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*/
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public static JSONArray toJSONArray(String string) throws JSONException {
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return toJSONArray(new XMLTokener(string));
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return (JSONArray)parse(new XMLTokener(string), true, null, false);
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}
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/**
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* Convert a well-formed (but not necessarily valid) XML string into a
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* JSONArray using the JsonML transform. Each XML tag is represented as
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* a JSONArray in which the first element is the tag name. If the tag has
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* attributes, then the second element will be JSONObject containing the
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* name/value pairs. If the tag contains children, then strings and
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* JSONArrays will represent the child tags.
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* As opposed to toJSONArray this method does not attempt to convert
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* any text node or attribute value to any type
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* but just leaves it as a string.
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param string The source string.
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* @param keepStrings If true, then values will not be coerced into boolean
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* or numeric values and will instead be left as strings
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* @return A JSONArray containing the structured data from the XML string.
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* @throws JSONException Thrown on error converting to a JSONArray
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*/
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public static JSONArray toJSONArray(String string, boolean keepStrings) throws JSONException {
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return (JSONArray)parse(new XMLTokener(string), true, null, keepStrings);
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}
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/**
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* Convert a well-formed (but not necessarily valid) XML string into a
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* JSONArray using the JsonML transform. Each XML tag is represented as
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* a JSONArray in which the first element is the tag name. If the tag has
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* attributes, then the second element will be JSONObject containing the
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* name/value pairs. If the tag contains children, then strings and
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* JSONArrays will represent the child content and tags.
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* As opposed to toJSONArray this method does not attempt to convert
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* any text node or attribute value to any type
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* but just leaves it as a string.
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param x An XMLTokener.
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* @param keepStrings If true, then values will not be coerced into boolean
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* or numeric values and will instead be left as strings
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* @return A JSONArray containing the structured data from the XML string.
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* @throws JSONException Thrown on error converting to a JSONArray
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*/
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public static JSONArray toJSONArray(XMLTokener x, boolean keepStrings) throws JSONException {
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return (JSONArray)parse(x, true, null, keepStrings);
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}
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@ -262,28 +305,10 @@ public class JSONML {
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param x An XMLTokener.
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* @return A JSONArray containing the structured data from the XML string.
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* @throws JSONException
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* @throws JSONException Thrown on error converting to a JSONArray
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*/
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public static JSONArray toJSONArray(XMLTokener x) throws JSONException {
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return (JSONArray)parse(x, true, null);
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}
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/**
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* Convert a well-formed (but not necessarily valid) XML string into a
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* JSONObject using the JsonML transform. Each XML tag is represented as
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* a JSONObject with a "tagName" property. If the tag has attributes, then
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* the attributes will be in the JSONObject as properties. If the tag
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* contains children, the object will have a "childNodes" property which
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* will be an array of strings and JsonML JSONObjects.
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param x An XMLTokener of the XML source text.
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* @return A JSONObject containing the structured data from the XML string.
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* @throws JSONException
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*/
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public static JSONObject toJSONObject(XMLTokener x) throws JSONException {
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return (JSONObject)parse(x, false, null);
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return (JSONArray)parse(x, true, null, false);
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}
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@ -298,10 +323,68 @@ public class JSONML {
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param string The XML source text.
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* @return A JSONObject containing the structured data from the XML string.
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* @throws JSONException
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* @throws JSONException Thrown on error converting to a JSONObject
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*/
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public static JSONObject toJSONObject(String string) throws JSONException {
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return toJSONObject(new XMLTokener(string));
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return (JSONObject)parse(new XMLTokener(string), false, null, false);
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}
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/**
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* Convert a well-formed (but not necessarily valid) XML string into a
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* JSONObject using the JsonML transform. Each XML tag is represented as
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* a JSONObject with a "tagName" property. If the tag has attributes, then
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* the attributes will be in the JSONObject as properties. If the tag
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* contains children, the object will have a "childNodes" property which
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* will be an array of strings and JsonML JSONObjects.
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param string The XML source text.
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* @param keepStrings If true, then values will not be coerced into boolean
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* or numeric values and will instead be left as strings
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* @return A JSONObject containing the structured data from the XML string.
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* @throws JSONException Thrown on error converting to a JSONObject
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*/
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public static JSONObject toJSONObject(String string, boolean keepStrings) throws JSONException {
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return (JSONObject)parse(new XMLTokener(string), false, null, keepStrings);
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}
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/**
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* Convert a well-formed (but not necessarily valid) XML string into a
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* JSONObject using the JsonML transform. Each XML tag is represented as
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* a JSONObject with a "tagName" property. If the tag has attributes, then
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* the attributes will be in the JSONObject as properties. If the tag
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* contains children, the object will have a "childNodes" property which
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* will be an array of strings and JsonML JSONObjects.
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param x An XMLTokener of the XML source text.
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* @return A JSONObject containing the structured data from the XML string.
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* @throws JSONException Thrown on error converting to a JSONObject
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*/
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public static JSONObject toJSONObject(XMLTokener x) throws JSONException {
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return (JSONObject)parse(x, false, null, false);
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}
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/**
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* Convert a well-formed (but not necessarily valid) XML string into a
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* JSONObject using the JsonML transform. Each XML tag is represented as
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* a JSONObject with a "tagName" property. If the tag has attributes, then
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* the attributes will be in the JSONObject as properties. If the tag
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* contains children, the object will have a "childNodes" property which
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* will be an array of strings and JsonML JSONObjects.
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param x An XMLTokener of the XML source text.
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* @param keepStrings If true, then values will not be coerced into boolean
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* or numeric values and will instead be left as strings
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* @return A JSONObject containing the structured data from the XML string.
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* @throws JSONException Thrown on error converting to a JSONObject
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*/
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public static JSONObject toJSONObject(XMLTokener x, boolean keepStrings) throws JSONException {
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return (JSONObject)parse(x, false, null, keepStrings);
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}
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@ -309,7 +392,7 @@ public class JSONML {
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* Reverse the JSONML transformation, making an XML text from a JSONArray.
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* @param ja A JSONArray.
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* @return An XML string.
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* @throws JSONException
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* @throws JSONException Thrown on error converting to a string
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*/
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public static String toString(JSONArray ja) throws JSONException {
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int i;
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@ -393,7 +476,7 @@ public class JSONML {
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* The other properties are attributes with string values.
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* @param jo A JSONObject.
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* @return An XML string.
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* @throws JSONException
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* @throws JSONException Thrown on error converting to a string
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*/
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public static String toString(JSONObject jo) throws JSONException {
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StringBuilder sb = new StringBuilder();
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@ -71,7 +71,7 @@ public class JSONTokener {
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* Construct a JSONTokener from an InputStream.
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* @param inputStream The source.
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*/
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public JSONTokener(InputStream inputStream) throws JSONException {
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public JSONTokener(InputStream inputStream) {
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this(new InputStreamReader(inputStream));
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}
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@ -90,6 +90,8 @@ public class JSONTokener {
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* Back up one character. This provides a sort of lookahead capability,
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* so that you can test for a digit or letter before attempting to parse
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* the next number or identifier.
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* @throws JSONException Thrown if trying to step back more than 1 step
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* or if already at the start of the string
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*/
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public void back() throws JSONException {
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if (this.usePrevious || this.index <= 0) {
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@ -121,6 +123,9 @@ public class JSONTokener {
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return -1;
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}
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/**
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* @return true if at the end of the file and we didn't step back
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*/
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public boolean end() {
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return this.eof && !this.usePrevious;
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}
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@ -130,6 +135,8 @@ public class JSONTokener {
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* Determine if the source string still contains characters that next()
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* can consume.
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* @return true if not yet at the end of the source.
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* @throws JSONException thrown if there is an error stepping forward
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* or backward while checking for more data.
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*/
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public boolean more() throws JSONException {
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this.next();
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@ -145,6 +152,7 @@ public class JSONTokener {
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* Get the next character in the source string.
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*
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* @return The next character, or 0 if past the end of the source string.
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* @throws JSONException Thrown if there is an error reading the source string.
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*/
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public char next() throws JSONException {
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int c;
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@ -225,7 +233,7 @@ public class JSONTokener {
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/**
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* Get the next char in the string, skipping whitespace.
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* @throws JSONException
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* @throws JSONException Thrown if there is an error reading the source string.
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* @return A character, or 0 if there are no more characters.
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*/
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public char nextClean() throws JSONException {
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@ -309,6 +317,8 @@ public class JSONTokener {
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* end of line, whichever comes first.
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* @param delimiter A delimiter character.
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* @return A string.
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* @throws JSONException Thrown if there is an error while searching
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* for the delimiter
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*/
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public String nextTo(char delimiter) throws JSONException {
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StringBuilder sb = new StringBuilder();
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@ -330,6 +340,8 @@ public class JSONTokener {
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* characters or the end of line, whichever comes first.
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* @param delimiters A set of delimiter characters.
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* @return A string, trimmed.
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* @throws JSONException Thrown if there is an error while searching
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* for the delimiter
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*/
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public String nextTo(String delimiters) throws JSONException {
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char c;
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@ -401,6 +413,8 @@ public class JSONTokener {
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* @param to A character to skip to.
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* @return The requested character, or zero if the requested character
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* is not found.
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* @throws JSONException Thrown if there is an error while searching
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* for the to character
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*/
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public char skipTo(char to) throws JSONException {
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char c;
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@ -453,6 +467,7 @@ public class JSONTokener {
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*
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* @return " at {index} [character {character} line {line}]"
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*/
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@Override
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public String toString() {
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return " at " + this.index + " [character " + this.character + " line " +
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this.line + "]";
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48
XML.java
48
XML.java
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@ -110,7 +110,7 @@ public class XML {
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*
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* @param string
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* A string.
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* @throws JSONException
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* @throws JSONException Thrown if the string contains whitespace or is empty.
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*/
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public static void noSpace(String string) throws JSONException {
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int i, length = string.length();
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@ -137,7 +137,7 @@ public class XML {
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* @return true if the close tag is processed.
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* @throws JSONException
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*/
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private static boolean parse(XMLTokener x, JSONObject context, String name)
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private static boolean parse(XMLTokener x, JSONObject context, String name, boolean keepStrings)
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throws JSONException {
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char c;
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int i;
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|
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@ -238,7 +238,7 @@ public class XML {
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throw x.syntaxError("Missing value");
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}
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jsonobject.accumulate(string,
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JSONObject.stringToValue((String) token));
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keepStrings ? token : JSONObject.stringToValue((String) token));
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token = null;
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} else {
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jsonobject.accumulate(string, "");
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|
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@ -270,12 +270,12 @@ public class XML {
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string = (String) token;
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if (string.length() > 0) {
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jsonobject.accumulate("content",
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JSONObject.stringToValue(string));
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keepStrings ? token : JSONObject.stringToValue(string));
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}
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} else if (token == LT) {
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// Nested element
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if (parse(x, jsonobject, tagName)) {
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if (parse(x, jsonobject, tagName,keepStrings)) {
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if (jsonobject.length() == 0) {
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context.accumulate(tagName, "");
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} else if (jsonobject.length() == 1
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|
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@ -301,9 +301,10 @@ public class XML {
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* {@link JSONObject.stringToValue(String)} method. Use it instead.
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*
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* @deprecated Use {@link JSONObject#stringToValue(String)} instead.
|
||||
* @param string
|
||||
* @param string String to convert
|
||||
* @return JSON value of this string or the string
|
||||
*/
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@Deprecated
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public static Object stringToValue(String string) {
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return JSONObject.stringToValue(string);
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||||
}
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|
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@ -322,24 +323,49 @@ public class XML {
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* @param string
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* The source string.
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||||
* @return A JSONObject containing the structured data from the XML string.
|
||||
* @throws JSONException
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* @throws JSONException Thrown if there is an errors while parsing the string
|
||||
*/
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public static JSONObject toJSONObject(String string) throws JSONException {
|
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return toJSONObject(string, false);
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}
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||||
|
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|
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/**
|
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* Convert a well-formed (but not necessarily valid) XML string into a
|
||||
* JSONObject. Some information may be lost in this transformation because
|
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* JSON is a data format and XML is a document format. XML uses elements,
|
||||
* attributes, and content text, while JSON uses unordered collections of
|
||||
* name/value pairs and arrays of values. JSON does not does not like to
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||||
* distinguish between elements and attributes. Sequences of similar
|
||||
* elements are represented as JSONArrays. Content text may be placed in a
|
||||
* "content" member. Comments, prologs, DTDs, and <code><[ [ ]]></code>
|
||||
* are ignored.
|
||||
*
|
||||
* All values are converted as strings, for 1, 01, 29.0 will not be coerced to
|
||||
* numbers but will instead be the exact value as seen in the XML document.
|
||||
*
|
||||
* @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 JSONObject containing the structured data from the XML string.
|
||||
* @throws JSONException Thrown if there is an errors while parsing the string
|
||||
*/
|
||||
public static JSONObject toJSONObject(String string, boolean keepStrings) throws JSONException {
|
||||
JSONObject jo = new JSONObject();
|
||||
XMLTokener x = new XMLTokener(string);
|
||||
while (x.more() && x.skipPast("<")) {
|
||||
parse(x, jo, null);
|
||||
parse(x, jo, null, keepStrings);
|
||||
}
|
||||
return jo;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert a JSONObject into a well-formed, element-normal XML string.
|
||||
*
|
||||
* @param object
|
||||
* A JSONObject.
|
||||
* @return A string.
|
||||
* @throws JSONException
|
||||
* @throws JSONException Thrown if there is an error parsing the string
|
||||
*/
|
||||
public static String toString(Object object) throws JSONException {
|
||||
return toString(object, null);
|
||||
|
|
@ -353,7 +379,7 @@ public class XML {
|
|||
* @param tagName
|
||||
* The optional name of the enclosing tag.
|
||||
* @return A string.
|
||||
* @throws JSONException
|
||||
* @throws JSONException Thrown if there is an error parsing the string
|
||||
*/
|
||||
public static String toString(Object object, String tagName)
|
||||
throws JSONException {
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue