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1
29
30 package com.caucho.jstl.el;
31
32 import com.caucho.el.Expr;
33 import com.caucho.jsp.BodyContentImpl;
34 import com.caucho.jsp.PageContextImpl;
35 import com.caucho.util.L10N;
36 import com.caucho.vfs.Vfs;
37 import com.caucho.xml.Xml;
38 import com.caucho.xml.XmlParser;
39
40 import org.w3c.dom.Document  ;
41 import org.xml.sax.InputSource ;
42
43 import javax.servlet.jsp.JspException ;
44 import javax.servlet.jsp.tagext.BodyTagSupport ;
45 import java.io.Reader ;
46
47 public class XmlParseTag extends BodyTagSupport {
48 private static L10N L = new L10N(XmlParseTag.class);
49
50 private Expr _xml;
51 private Expr _systemId;
52 private Expr _filter;
53
54 private String _var;
55 private String _scope;
56
57 private String _varDom;
58 private String _scopeDom;
59
60
63 public void setXml(Expr xml)
64 {
65 setDoc(xml);
66 }
67
68
71 public void setDoc(Expr xml)
72 {
73 _xml = xml;
74 }
75
76
79 public void setSystemId(Expr systemId)
80 {
81 _systemId = systemId;
82 }
83
84
87 public void setFilter(Expr filter)
88 {
89 _filter = filter;
90 }
91
92
95 public void setVar(String var)
96 {
97 _var = var;
98 }
99
100
103 public void setScope(String scope)
104 {
105 _scope = scope;
106 }
107
108
111 public void setVarDom(String var)
112 {
113 _varDom = var;
114 }
115
116
119 public void setScopeDom(String scope)
120 {
121 _scopeDom = scope;
122 }
123
124 public int doEndTag() throws JspException
125 {
126 try {
127 PageContextImpl pageContext = (PageContextImpl) this.pageContext;
128 BodyContentImpl body = (BodyContentImpl) getBodyContent();
129
130 Reader reader;
131
132 if (_xml != null) {
133 Object obj = _xml.evalObject(pageContext.getELContext());
134
135 if (obj instanceof Reader )
136 reader = (Reader ) obj;
137 else if (obj instanceof String )
138 reader = Vfs.openString((String ) obj).getReader();
139 else
140 throw new JspException (L.l("'doc' attribute must be a Reader or String at `{0}'",
141 obj));
142 }
143 else if (body != null)
144 reader = body.getReader();
145 else
146 throw new JspException (L.l("x:parse requires a body"));
147
148 InputSource is = new InputSource (reader);
149
150 XmlParser parser = new Xml();
151
152 Document doc = parser.parseDocument(is);
153
154 reader.close();
155
156 if (_var != null)
157 CoreSetTag.setValue(pageContext, _var, _scope, doc);
158 else if (_varDom != null)
159 CoreSetTag.setValue(pageContext, _varDom, _scopeDom, doc);
160 else
161 throw new JspException (L.l("x:parse needs either var or varDom"));
162 } catch (JspException e) {
163 throw e;
164 } catch (Exception e) {
165 throw new JspException (e);
166 }
167
168 return EVAL_PAGE;
169 }
170 }
171 |
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