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1
19
20 package org.netbeans.api.languages;
21
22 import java.io.InputStream  ;
23 import java.util.ArrayList ;
24 import java.util.Collections ;
25 import java.util.HashMap ;
26 import java.util.List ;
27 import java.util.Map ;
28 import org.openide.ErrorManager;
29 import org.openide.util.Lookup;
30 import org.openide.xml.XMLUtil;
31 import org.xml.sax.Attributes ;
32 import org.xml.sax.InputSource ;
33 import org.xml.sax.SAXException ;
34 import org.xml.sax.XMLReader ;
35 import org.xml.sax.helpers.DefaultHandler ;
36
37
38
43 public class LibrarySupport {
44
45
50 public static LibrarySupport create (String resourceName) {
51 return new LibrarySupport (resourceName);
52 }
53
54 private String resourceName;
55
56 private LibrarySupport (String resourceName) {
57 this.resourceName = resourceName;
58 }
59
60
61 private Map <String ,List <String >> keys = new HashMap <String ,List <String >> ();
62
63
70 public List <String > getItems (String context) {
71 List <String > k = keys.get (context);
72 if (k == null) {
73 Map <String ,Map <String ,String >> m = getItems ().get (context);
74 if (m == null) return null;
75 k = new ArrayList <String > (m.keySet ());
76 Collections.<String >sort (k);
77 k = Collections.<String >unmodifiableList (k);
78 keys.put (context, k);
79 }
80 return k;
81 }
82
83
90 public String getProperty (String context, String item, String propertyName) {
91 Map <String ,Map <String ,String >> m = getItems ().get (context);
92 if (m == null) return null;
93 Map <String ,String > m1 = m.get (item);
94 if (m1 == null) return null;
95 return m1.get (propertyName);
96 }
97
98
99
101 private Map <String ,Map <String ,Map <String ,String >>> items;
102
103 private Map <String ,Map <String ,Map <String ,String >>> getItems () {
104 if (items == null)
105 try {
106 XMLReader reader = XMLUtil.createXMLReader ();
107 Handler handler = new Handler ();
108 reader.setEntityResolver (handler);
109 reader.setContentHandler (handler);
110 ClassLoader loader = (ClassLoader ) Lookup.getDefault ().
111 lookup (ClassLoader .class);
112 InputStream is = loader.getResourceAsStream (resourceName);
113 try {
114 reader.parse (new InputSource (is));
115 } finally {
116 is.close ();
117 }
118 items = handler.result;
119 } catch (Exception ex) {
120 ErrorManager.getDefault ().notify (ex);
121 items = Collections.<String ,Map <String ,Map <String ,String >>> emptyMap ();
122 }
123 return items;
124 }
125
126 static class Handler extends DefaultHandler {
127
128 Map <String ,Map <String ,Map <String ,String >>> result = new HashMap <String ,Map <String ,Map <String ,String >>> ();
129
130 public void startElement (
131 String uri,
132 String localName,
133 String name,
134 Attributes attributes
135 ) throws SAXException {
136 try {
137 if (name.equals ("node")) {
138 String contexts = attributes.getValue ("context");
139 String key = attributes.getValue ("key");
140 Map <String ,String > properties = null;
141 if (attributes.getLength () > 2) {
142 properties = new HashMap <String ,String > ();
143 int i, k = attributes.getLength ();
144 for (i = 0; i < k; i++) {
145 String propertyName = attributes.getQName (i);
146 if ("context".equals (propertyName)) continue;
147 if ("key".equals (propertyName)) continue;
148 properties.put (propertyName, attributes.getValue (i));
149 }
150 }
151 while (true) {
152 int i = contexts.indexOf (',');
153 String context = i >= 0 ?
154 contexts.substring (0, i).trim () : contexts;
155 Map <String ,Map <String ,String >> c = result.get (context);
156 if (c == null) {
157 c = new HashMap <String ,Map <String ,String >> ();
158 result.put (context, c);
159 }
160 if (c.containsKey (key))
161 throw new IllegalArgumentException ("Key " + context + "-" + key + " already exists!");
162 c.put (key, properties);
163 if (i < 0) break;
164 contexts = contexts.substring (i + 1);
165 }
166 }
167 } catch (Exception ex) {
168 ErrorManager.getDefault ().notify (ex);
169 }
170 }
171
172 public InputSource resolveEntity (String pubid, String sysid) {
173 return new InputSource (
174 new java.io.ByteArrayInputStream (new byte [0])
175 );
176 }
177 }
178 }
179 |
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