001 package groovy.xml.streamingmarkupsupport;
002 /*
003
004 Copyright 2004 (C) John Wilson. All Rights Reserved.
005
006 Redistribution and use of this software and associated documentation
007 ("Software"), with or without modification, are permitted provided
008 that the following conditions are met:
009
010 1. Redistributions of source code must retain copyright
011 statements and notices. Redistributions must also contain a
012 copy of this document.
013
014 2. Redistributions in binary form must reproduce the
015 above copyright notice, this list of conditions and the
016 following disclaimer in the documentation and/or other
017 materials provided with the distribution.
018
019 3. The name "groovy" must not be used to endorse or promote
020 products derived from this Software without prior written
021 permission of The Codehaus. For written permission,
022 please contact info@codehaus.org.
023
024 4. Products derived from this Software may not be called "groovy"
025 nor may "groovy" appear in their names without prior written
026 permission of The Codehaus. "groovy" is a registered
027 trademark of The Codehaus.
028
029 5. Due credit should be given to The Codehaus -
030 http://groovy.codehaus.org/
031
032 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
036 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
039 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
040 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
041 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
042 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043 OF THE POSSIBILITY OF SUCH DAMAGE.
044
045 */
046
047 import groovy.lang.Closure;
048 import groovy.lang.GroovyInterceptable;
049
050 import java.util.Collections;
051 import java.util.HashMap;
052 import java.util.Map;
053
054 public class BaseMarkupBuilder extends Builder {
055 public BaseMarkupBuilder(final Map namespaceMethodMap) {
056 super(namespaceMethodMap);
057 }
058
059 public Object bind(final Closure root) {
060 return new Document(root, this.namespaceMethodMap);
061 }
062
063 private static class Document extends Built implements GroovyInterceptable {
064 private Object out;
065 private final Map pendingNamespaces = new HashMap();
066 private final Map namespaces = new HashMap();
067 private String prefix = "";
068
069 public Document(final Closure root, final Map namespaceMethodMap) {
070 super(root, namespaceMethodMap);
071
072 this.namespaces.put("xml", "http://www.w3.org/XML/1998/namespace"); // built in namespace
073 this.namespaces.put("mkp", "http://www.codehaus.org/Groovy/markup/keywords"); // pseudo namespace for markup keywords
074 }
075
076 /* (non-Javadoc)
077 * @see groovy.lang.GroovyObject#invokeMethod(java.lang.String, java.lang.Object)
078 */
079 public Object invokeMethod(final String name, final Object args) {
080 final Object[] arguments = (Object[]) args;
081 Map attrs = Collections.EMPTY_MAP;
082 Object body = null;
083
084
085 //
086 // Sort the parameters out
087 //
088 for (int i = 0; i != arguments.length; i++) {
089 final Object arg = arguments[i];
090
091 if (arg instanceof Map) {
092 attrs = (Map)arg;
093 } else if (arg instanceof Closure) {
094 final Closure c = ((Closure) arg);
095
096 c.setDelegate(this);
097 body = c.asWritable();
098 } else {
099 body = arg;
100 }
101 }
102
103 //
104 // call the closure corresponding to the tag
105 //
106 final Object uri;
107
108 if (this.pendingNamespaces.containsKey(this.prefix)) {
109 uri = this.pendingNamespaces.get(this.prefix);
110 } else if (this.namespaces.containsKey(this.prefix)) {
111 uri = this.namespaces.get(this.prefix);
112 } else {
113 uri = ":";
114 }
115
116 final Object[] info = (Object[])this.namespaceSpecificTags.get(uri);
117 final Map tagMap = (Map)info[2];
118 final Closure defaultTagClosure = (Closure)info[0];
119
120 final String prefix = this.prefix;
121 this.prefix = "";
122
123 if (tagMap.containsKey(name)) {
124 return ((Closure)tagMap.get(name)).call(new Object[]{this, this.pendingNamespaces, this.namespaces, this.namespaceSpecificTags, prefix, attrs, body, this.out});
125 } else {
126 return defaultTagClosure.call(new Object[]{name, this, this.pendingNamespaces, this.namespaces, this.namespaceSpecificTags, prefix, attrs, body, this.out});
127 }
128 }
129
130 /* (non-Javadoc)
131 * @see groovy.lang.GroovyObject#getProperty(java.lang.String)
132 */
133 public Object getProperty(final String property) {
134 this.prefix = property;
135 return this;
136 }
137
138 /* (non-Javadoc)
139 * @see groovy.lang.GroovyObject#setProperty(java.lang.String, java.lang.Object)
140 */
141 public void setProperty(String property, Object newValue) {
142 if ("trigger".equals(property)) {
143 this.out = newValue;
144 this.root.call(this);
145 } else {
146 super.setProperty(property, newValue);
147 }
148 }
149 }
150 }