|
1 package com.icl.saxon.style;
2 import com.icl.saxon.Context;
3 import com.icl.saxon.StylesheetStripper;
4 import com.icl.saxon.TransformerFactoryImpl;
5 import com.icl.saxon.StandardURIResolver;
6 import com.icl.saxon.om.NodeInfo;
7 import com.icl.saxon.om.DocumentInfo;
8 import com.icl.saxon.om.NamePool;
9 import com.icl.saxon.tree.TreeBuilder;
10 import com.icl.saxon.tree.DocumentImpl;
11 import com.icl.saxon.tree.ElementImpl;
12 import com.icl.saxon.tree.AttributeCollection;
13 import javax.xml.transform.Source  ;
14
15 import javax.xml.transform.TransformerConfigurationException ;
16 import javax.xml.transform.TransformerException ;
17 import javax.xml.transform.URIResolver ;
18 import javax.xml.transform.sax.SAXSource ;
19 import javax.xml.transform.dom.DOMSource ;
20
21 import org.w3c.dom.Node ;
22
23
24
28
29 public abstract class XSLGeneralIncorporate extends StyleElement {
30
31 String href;
32 DocumentImpl includedDoc;
33
34
37
38 public abstract boolean isImport();
39
40 public void prepareAttributes() throws TransformerConfigurationException {
41
42 StandardNames sn = getStandardNames();
43 AttributeCollection atts = getAttributeList();
44
45 for (int a=0; a<atts.getLength(); a++) {
46 int nc = atts.getNameCode(a);
47 int f = nc & 0xfffff;
48 if (f==sn.HREF) {
49 href = atts.getValue(a);
50 } else {
51 checkUnknownAttribute(nc);
52 }
53 }
54
55 if (href==null) {
56 reportAbsence("href");
57 }
58 }
59
60 public void validate() throws TransformerConfigurationException {
61 checkEmpty();
64 checkTopLevel();
65 }
66
67 public XSLStyleSheet getIncludedStyleSheet(XSLStyleSheet importer, int precedence)
68 throws TransformerConfigurationException {
69
70 if (href==null) {
71 return null;
73 }
74
75 checkEmpty();
76 checkTopLevel();
77
78 try {
79 XSLStyleSheet thisSheet = (XSLStyleSheet)getParentNode();
80 DocumentInfo thisDoc = getDocumentRoot();
81 TransformerFactoryImpl factory =
82 getPreparedStyleSheet().getTransformerFactory();
83 Source source = factory.getURIResolver().resolve(href, getBaseURI());
84
85 if (source==null) {
88 source = (new StandardURIResolver (factory)).resolve(href, getBaseURI());
89 }
90
91 if (source instanceof NodeInfo) {
92 if (source instanceof Node ) {
93 source = new DOMSource ((Node )source);
94 } else {
95 throw new TransformerException ("URIResolver must not return a " + source.getClass());
96 }
97 }
98 SAXSource saxSource = factory.getSAXSource(source, true);
99
100
102 XSLStyleSheet anc = thisSheet;
103 while(anc!=null) {
104 if (saxSource.getSystemId().equals(anc.getSystemId())) {
105 compileError("A stylesheet cannot " + getLocalName() + " itself");
106 return null;
107 }
108 anc = anc.getImporter();
109 }
110
111
113 NamePool pool = getDocumentRoot().getNamePool();
114 StylesheetStripper styleStripper = new StylesheetStripper();
115 styleStripper.setStylesheetRules(pool);
116
117 TreeBuilder builder = new TreeBuilder();
118 builder.setNamePool(pool);
119 builder.setStripper(styleStripper);
120 builder.setNodeFactory(new StyleNodeFactory(pool));
121 builder.setDiscardCommentsAndPIs(true);
122 builder.setLineNumbering(true);
123
124 includedDoc = (DocumentImpl)builder.build(saxSource);
125
126
128 ElementImpl outermost = (ElementImpl)includedDoc.getDocumentElement();
129 if (outermost instanceof LiteralResultElement) {
130 includedDoc = ((LiteralResultElement)outermost).makeStyleSheet(getPreparedStyleSheet());
131 outermost = (ElementImpl)includedDoc.getDocumentElement();
132 }
133
134 if (!(outermost instanceof XSLStyleSheet)) {
135 compileError("Included document " + href + " is not a stylesheet");
136 return null;
137 }
138 XSLStyleSheet incSheet = (XSLStyleSheet)outermost;
139
140 incSheet.setPrecedence(precedence);
141 incSheet.setImporter(importer);
142 incSheet.spliceIncludes();
144 return incSheet;
145
146 } catch (TransformerException err) {
147 compileError(err);
148 return null;
149 }
150 }
151
152 public void process(Context context)
153 {
154 }
157 }
158
159 |
Popular Tags |
Java API By Example, From Geeks To Geeks.