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Parse itunes plist file without JAXB (#11)
Use built in parsing instead.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| package com.bolsinga.itunes; | ||
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| import java.util.*; | ||
| import org.xml.sax.*; | ||
| import org.xml.sax.helpers.*; | ||
|
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| class ParserHandler extends DefaultHandler { | ||
| public Map<String, Object> plist; | ||
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| private Stack<AbstractMap.SimpleEntry<String, Object>> mapEntryStack = new Stack<AbstractMap.SimpleEntry<String, Object>>(); | ||
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| private Stack<String> elementStack = new Stack<String>(); | ||
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| private Stack<Map<String, Object>> dictStack = new Stack<Map<String, Object>>(); | ||
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| private Stack<Boolean> parsingArrayStack = new Stack<Boolean>(); | ||
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| public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { | ||
| this.elementStack.push(qName); | ||
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| if ("array".equals(qName)) { | ||
| if (this.parsingArrayStack.empty()) { | ||
| this.mapEntryStack.pop(); // Remove the key for this array. | ||
| } | ||
| this.parsingArrayStack.push(Boolean.TRUE); | ||
| } else { | ||
| if (this.parsingArrayStack.empty()) { | ||
| if ("plist".equals(qName)) { | ||
| // Nothing | ||
| } else if ("dict".equals(qName)) { | ||
| Map<String, Object> dictionary = new LinkedHashMap<String, Object>(); | ||
| this.dictStack.push(dictionary); | ||
| } else if ("key".equals(qName)) { | ||
| // Nothing | ||
| } else { | ||
| if ("data".equals(qName) || | ||
| "date".equals(qName) || | ||
| "false".equals(qName) || | ||
| "integer".equals(qName) || | ||
| "string".equals(qName) || | ||
| "true".equals(qName)) { | ||
| // Nothing | ||
| } else { | ||
| throw new SAXException("Unknown element: " + qName); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| public void endElement(String uri, String localName, String qName) throws SAXException { | ||
| this.elementStack.pop(); | ||
|
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| if ("array".equals(qName)) { | ||
| this.parsingArrayStack.pop(); | ||
| } else { | ||
| if (this.parsingArrayStack.empty()) { | ||
| if ("plist".equals(qName)) { | ||
| plist = dictStack.pop(); | ||
| } else if ("dict".equals(qName)) { | ||
| AbstractMap.SimpleEntry<String, Object> currentMapEntry = currentMapEntry(); | ||
| if (currentMapEntry != null) { | ||
| if (currentMapEntry.getValue() != null) { | ||
| throw new SAXException("Can't set dictionary value for: " + currentMapEntry.toString()); | ||
| } | ||
| Map<String, Object> endedDict = dictStack.pop(); | ||
| currentMapEntry.setValue(endedDict); | ||
|
|
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| // Now pop it | ||
| currentMapEntry = this.mapEntryStack.pop(); | ||
|
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| // need to re-access the new current dict | ||
| currentDict().put(currentMapEntry.getKey(), currentMapEntry.getValue()); | ||
| } else { | ||
| // A-OK | ||
| } | ||
| } else if ("key".equals(qName)) { | ||
| // Nothing | ||
| } else { | ||
| if ("data".equals(qName) || | ||
| "date".equals(qName) || | ||
| "integer".equals(qName) || | ||
| "string".equals(qName)) { | ||
| AbstractMap.SimpleEntry<String, Object> mapEntry = this.mapEntryStack.pop(); | ||
| currentDict().put(mapEntry.getKey(), mapEntry.getValue()); | ||
| } else if ("true".equals(qName) || "false".equals(qName)) { | ||
| AbstractMap.SimpleEntry<String, Object> mapEntry = this.mapEntryStack.pop(); | ||
| mapEntry.setValue(qName); | ||
| currentDict().put(mapEntry.getKey(), mapEntry.getValue()); | ||
| } else { | ||
| throw new SAXException("Unknown element: " + qName); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| public void characters(char[] ch, int start, int length) throws SAXException { | ||
| String value = new String(ch, start, length); | ||
|
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| if (this.parsingArrayStack.empty()) { | ||
| if ("key".equals(elementStack.peek())) { | ||
| AbstractMap.SimpleEntry<String, Object> mapEntry = new AbstractMap.SimpleEntry<String, Object>(value, null); | ||
| this.mapEntryStack.push(mapEntry); | ||
| } else { | ||
| AbstractMap.SimpleEntry<String, Object> currentMapEntry = currentMapEntry(); | ||
| String currentValue = (String)currentMapEntry.getValue(); | ||
| if (currentValue != null) { | ||
| StringBuffer sb = new StringBuffer(currentValue); | ||
| sb.append(value); | ||
| currentMapEntry.setValue(sb.toString()); | ||
| } else { | ||
| currentMapEntry.setValue(value); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| private Map<String, Object> currentDict() { | ||
| if (this.dictStack.empty()) { | ||
| return null; | ||
| } else { | ||
| return this.dictStack.peek(); | ||
| } | ||
| } | ||
|
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| private AbstractMap.SimpleEntry<String, Object> currentMapEntry() { | ||
| if (this.mapEntryStack.empty()) { | ||
| return null; | ||
| } else { | ||
| return this.mapEntryStack.peek(); | ||
| } | ||
| } | ||
| } |
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