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1 package net.sf.saxon.style;
2 import net.sf.saxon.Configuration;
3 import net.sf.saxon.expr.Expression;
4 import net.sf.saxon.instruct.Executable;
5 import net.sf.saxon.om.AttributeCollection;
6 import net.sf.saxon.trans.XPathException;
7
8 import java.text.Collator  ;
9 import java.text.ParseException ;
10 import java.text.RuleBasedCollator ;
11 import java.util.Comparator ;
12 import java.util.Locale ;
13
14
19
20 public class SaxonCollation extends StyleElement {
21
22 private String collationName;
23
24 private Comparator collator; private boolean isDefault = false;
27
28 public void prepareAttributes() throws XPathException {
29
30 AttributeCollection atts = getAttributeList();
31
32 String nameAtt = null; String classAtt = null; String strengthAtt = null; String decompositionAtt = null; String langAtt = null; String rulesAtt = null; String defaultAtt = null;
39
40 for (int a=0; a<atts.getLength(); a++) {
41 int nc = atts.getNameCode(a);
42 String f = getNamePool().getClarkName(nc);
43 if (f==StandardNames.NAME) {
44 nameAtt = atts.getValue(a).trim();
45 } else if (f==StandardNames.CLASS) {
46 classAtt = atts.getValue(a).trim();
47 } else if (f==StandardNames.STRENGTH) {
48 strengthAtt = atts.getValue(a).trim();
49 } else if (f==StandardNames.DECOMPOSITION) {
50 decompositionAtt = atts.getValue(a).trim();
51 } else if (f==StandardNames.LANG) {
52 langAtt = atts.getValue(a).trim();
53 } else if (f==StandardNames.RULES) {
54 rulesAtt = atts.getValue(a).trim();
55 } else if (f==StandardNames.DEFAULT) {
56 defaultAtt = atts.getValue(a).trim();
57 } else {
58 checkUnknownAttribute(nc);
59 }
60 }
61
62 if (nameAtt!=null) {
63 collationName = nameAtt.trim();
64 }
65
66 if (classAtt!=null) {
67 if (rulesAtt != null || langAtt != null || strengthAtt != null || decompositionAtt != null) {
68 compileError("The class attribute cannot be combined with rules, lang, strength, or decomposition");
69 }
70 try {
71 collator = getConfiguration().makeCollator(classAtt);
72 return;
73 } catch (XPathException err) {
74 collator = Collator.getInstance(); throw err;
76 }
77 }
78
79 if (rulesAtt!=null) {
80 if (langAtt != null || strengthAtt != null || decompositionAtt != null) {
81 compileError("The rules attribute cannot be combined with lang, strength, or decomposition");
82 }
83 try {
84 collator = new RuleBasedCollator (rulesAtt);
85 } catch (ParseException e) {
86 collator = Collator.getInstance(); compileError("Invalid collation rules: " + e.getMessage());
88 }
89 }
90
91
93 if (langAtt!=null) {
94 collator = Collator.getInstance(Configuration.getLocale(langAtt));
95 } else if (collator == null) {
96 collator = Collator.getInstance(); }
98
99 if (strengthAtt!=null && collator instanceof Collator ) {
100 if (strengthAtt.equals("primary")) {
101 ((Collator )collator).setStrength(Collator.PRIMARY);
102 } else if (strengthAtt.equals("secondary")) {
103 ((Collator )collator).setStrength(Collator.SECONDARY);
104 } else if (strengthAtt.equals("tertiary")) {
105 ((Collator )collator).setStrength(Collator.TERTIARY);
106 } else if (strengthAtt.equals("identical")) {
107 ((Collator )collator).setStrength(Collator.IDENTICAL);
108 } else {
109 compileError("strength must be primary, secondary, tertiary, or identical");
110 }
111 }
112
113 if (decompositionAtt!=null && collator instanceof Collator ) {
114 if (decompositionAtt.equals("none")) {
115 ((Collator )collator).setDecomposition(Collator.NO_DECOMPOSITION);
116 } else if (decompositionAtt.equals("standard")) {
117 ((Collator )collator).setDecomposition(Collator.CANONICAL_DECOMPOSITION);
118 } else if (decompositionAtt.equals("full")) {
119 ((Collator )collator).setDecomposition(Collator.FULL_DECOMPOSITION);
120 } else {
121 compileError("decomposition must be none, standard, or full");
122 }
123 }
124
125 if (defaultAtt != null) {
126 if (defaultAtt.equals("yes")) {
127 isDefault = true;
128 } else if (defaultAtt.equals("no")) {
129 } else {
131 compileError("default attribute must be yes or no");
132 }
133 }
134
135 getPrincipalStylesheet().setCollation(collationName, collator, isDefault);
137 }
138
139 public void validate() throws XPathException {
140 checkTopLevel(null);
141 checkEmpty();
142 }
143
144 public Expression compile(Executable exec) throws XPathException {
145 getPrincipalStylesheet().setCollation(collationName, collator, isDefault);
146 exec.setReasonUnableToCompile("Cannot compile a stylesheet that uses saxon:collation (because the Java class " +
147 "java.text.RuleBasedCollator is not serializable)");
148 return null;
149 }
150
151 public String getCollationName() {
152 return collationName;
153 }
154
155 public boolean isDefaultCollation() {
156 return isDefault;
157 }
158
159 public Comparator getCollator() {
160 return collator;
161 }
162
163
167
168 public static void main(String [] args) {
169 System.err.println("The following locales have collations available:");
170 Locale [] loc = Collator.getAvailableLocales();
171 for (int i=0; i<loc.length; i++) {
172 Locale l=loc[i];
173 System.err.println("Locale:" +
174 ("".equals(l.getCountry()) ? "" : " country='" + l.getCountry() + "' (" + l.getDisplayCountry() + ")" ) +
175 ("".equals(l.getLanguage()) ? "" : " language='" + l.getLanguage() + "' (" + l.getDisplayLanguage() + ")" ) +
176 ("".equals(l.getVariant()) ? "" : " variant='" + l.getVariant() + "' (" + l.getDisplayVariant() + ")" ));
177 }
178 }
179
180 }
181
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