--- /dev/null
+/*
+ * Copyright (C) 2001, 2002 The Mir-coders group
+ *
+ * This file is part of Mir.
+ *
+ * Mir is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Mir is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Mir; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * In addition, as a special exception, The Mir-coders gives permission to link
+ * the code of this program with any library licensed under the Apache Software License,
+ * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
+ * (or with modified versions of the above that use the same license as the above),
+ * and distribute linked combinations including the two. You must obey the
+ * GNU General Public License in all respects for all of the code used other than
+ * the above mentioned libraries. If you modify this file, you may extend this
+ * exception to your version of the file, but you are not obligated to do so.
+ * If you do not wish to do so, delete this exception statement from your version.
+ */
+package mir.generator.tal.template;
+
+import java.util.Map;
+import java.util.Iterator;
+import java.util.List;
+import java.util.HashMap;
+
+import mir.generator.tal.interfaces.TALExpressionParser;
+import mir.generator.tal.interfaces.TALLogger;
+import mir.util.xml.XMLName;
+import mir.util.xml.XMLParserExc;
+import mir.util.xml.XMLReaderTool;
+import mir.util.StringRoutines;
+import mir.util.HTMLRoutines;
+
+public class MacroTemplateNodeLibrary implements TemplateNodeLibrary {
+ /** {@inheritDoc} */
+ private static final String DEFINE_MACRO_ATTRIBUTE = "define-macro";
+ private static final String USE_MACRO_ATTRIBUTE = "use-macro";
+ private static final String DEFINE_SLOT_ATTRIBUTE = "define-slot";
+ private static final String FILL_SLOT_ATTRIBUTE = "fill-macro";
+
+ public static final String MACRO_DEFINITIONS_KEY = "$" + MacroTemplateNodeLibrary.class.getName() + "$macro_definitions";
+ public static final String ORPHANED_SLOTS_KEY = "$" + MacroTemplateNodeLibrary.class.getName() + "$macro_definitions";
+
+ private String prefix;
+ private String uri;
+
+
+ private boolean isOurTag(XMLName aName) {
+ return prefix.equals(aName.getPrefix()) || uri.equals(aName.getNamespaceURI());
+ }
+
+ public MacroTemplateNodeLibrary(String aPrefix, String aUri) {
+ prefix = aPrefix;
+ uri = aUri;
+ }
+
+ public TemplateNode constructTemplateNode(TALExpressionParser anExpressionParser, XMLName aTag, Map anAttributes,
+ TemplateNode aChildTemplateNode, Map aTemplateContext) throws XMLParserExc {
+
+ StringBuffer prefix = new StringBuffer();
+ boolean useSurroundingTag = !(isOurTag(aTag));
+
+ prefix.append("<").append(XMLReaderTool.normalizeXMLName(aTag));
+ String suffix = "</"+XMLReaderTool.normalizeXMLName(aTag)+">";
+
+ String macroDefinition = null;
+ String slotDefinition = null;
+ String slotFill = null;
+ Object macroCallExpression = null;
+
+ Iterator i = anAttributes.entrySet().iterator();
+
+ while (i.hasNext()) {
+ Map.Entry entry = (Map.Entry) i.next();
+ XMLName name = (XMLName) entry.getKey();
+
+ if (!isOurTag(name)) {
+ prefix.append(" ").append(XMLReaderTool.normalizeXMLName(name));
+ prefix.append("=\"").append(HTMLRoutines.encodeHTML( (String) entry.getValue())).append('"');
+ }
+ else {
+ if (name.getLocalName().equalsIgnoreCase(DEFINE_MACRO_ATTRIBUTE)) {
+ macroDefinition = (String) entry.getValue();
+ }
+ else if (name.getLocalName().equalsIgnoreCase(USE_MACRO_ATTRIBUTE)) {
+ macroCallExpression = anExpressionParser.preparseStringExpression((String) entry.getValue());
+ }
+ else if (name.getLocalName().equalsIgnoreCase(DEFINE_SLOT_ATTRIBUTE)) {
+ slotDefinition = (String) entry.getValue();
+ }
+ else if (name.getLocalName().equalsIgnoreCase(FILL_SLOT_ATTRIBUTE)) {
+ slotFill = (String) entry.getValue();
+ }
+ }
+ }
+ prefix.append(">");
+
+ MacroTemplateNode result;
+ if (useSurroundingTag) {
+ result = new MacroTemplateNode(aChildTemplateNode, prefix.toString(), suffix, slotDefinition, slotFill);
+ }
+ else {
+ result = new MacroTemplateNode(aChildTemplateNode, "", "", slotDefinition, slotFill);
+ }
+
+ if (macroCallExpression!=null) {
+ result.setMacroCall(macroCallExpression);
+ }
+
+ if (macroDefinition!=null) {
+ macroDefinition = macroDefinition.trim();
+ if (macroDefinition.length()==0) {
+ throw new XMLParserExc("Empty macro name");
+ }
+
+ Map definitions = (Map) aTemplateContext.get(MACRO_DEFINITIONS_KEY);
+ if (definitions==null) {
+ definitions=new HashMap();
+ aTemplateContext.put(MACRO_DEFINITIONS_KEY, definitions);
+ }
+
+ if (definitions.containsKey(macroDefinition)) {
+ throw new XMLParserExc("Duplicate macro name: " + macroDefinition);
+ }
+
+ definitions.put(macroDefinition, result);
+
+ Map slots = (Map) aTemplateContext.get(ORPHANED_SLOTS_KEY);
+ if (slots!=null) {
+ }
+ }
+
+ return result;
+ }
+
+ private class MacroTemplateNode implements TemplateNode {
+ private TemplateNode childNode;
+ private String prefix;
+ private String suffix;
+
+ private Object macroCallTemplateExpression = null;
+
+ private String slotDefinition;
+ private String slotFill;
+
+ public MacroTemplateNode(TemplateNode aChildNode, String aPrefix, String aSuffix,
+ String aSlotDefinition, String aSlotFill) {
+ childNode = aChildNode;
+ prefix = aPrefix;
+ suffix = aSuffix;
+
+ slotDefinition = aSlotDefinition;
+ slotFill = aSlotFill;
+ }
+
+ public void setMacroCall(Object anExpression) {
+ macroCallTemplateExpression = anExpression;
+ }
+
+ /** {@inheritDoc} */
+ public void process(TALExpressionParser aParser, Object aContext, StringBuffer aDestination,
+ TALLogger aLogger, Map aTemplateContext, TemplateLibrary aLibrary) throws TemplateProcessingException {
+
+ if (macroCallTemplateExpression!=null) {
+ String macroPath = aParser.evaluateStringExpression(aContext, macroCallTemplateExpression);
+ List parts = StringRoutines.separateString(macroPath, "#");
+ if (parts.size()!=2) {
+ throw new TemplateProcessingException("Invalid macro path '" + macroPath + "'");
+ }
+
+ Template template = aLibrary.lookupTemplate((String) parts.get(0));
+ Map definitions = (Map) template.getContext().get(MACRO_DEFINITIONS_KEY);
+ if (template==null) {
+ throw new TemplateProcessingException("Cannot find template '" + (String) parts.get(0) + "'");
+ }
+ if (definitions==null || !definitions.containsKey(parts.get(1))) {
+ throw new TemplateProcessingException("No macro '"+(String) parts.get(1)+"' found in template '" + (String) parts.get(0) + "'");
+ }
+
+ MacroTemplateNode macro = (MacroTemplateNode) definitions.get(parts.get(1));
+
+ macro.process(aParser, aContext, aDestination, aLogger, aTemplateContext, aLibrary);
+ }
+ else {
+ aDestination.append(prefix);
+
+ childNode.process(aParser, aContext, aDestination, aLogger, aTemplateContext, aLibrary);
+ aDestination.append(suffix);
+ }
+ }
+
+ public String getPlainText() {
+ return childNode.getPlainText();
+ }
+ }
+}
projects / mir.git / blobdiff