| /* |
| * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package build.tools.generatebreakiteratordata; |
| |
| import java.util.Hashtable; |
| import java.util.Vector; |
| |
| /** |
| * The Builder class for DictionaryBasedBreakIterator inherits almost all of |
| * its functionality from RuleBasedBreakIteratorBuilder, but extends it with |
| * extra logic to handle the "<dictionary>" token. |
| */ |
| class DictionaryBasedBreakIteratorBuilder extends RuleBasedBreakIteratorBuilder { |
| |
| /** |
| * A list of flags indicating which character categories are contained in |
| * the dictionary file (this is used to determine which ranges of characters |
| * to apply the dictionary to) |
| */ |
| private boolean[] categoryFlags; |
| |
| /** |
| * A CharSet that contains all the characters represented in the dictionary |
| */ |
| private CharSet dictionaryChars = new CharSet(); |
| private String dictionaryExpression = ""; |
| |
| public DictionaryBasedBreakIteratorBuilder(String description) { |
| super(description); |
| } |
| |
| /** |
| * We override handleSpecialSubstitution() to add logic to handle |
| * the <dictionary> tag. If we see a substitution named "<dictionary>", |
| * parse the substitution expression and store the result in |
| * dictionaryChars. |
| */ |
| protected void handleSpecialSubstitution(String replace, String replaceWith, |
| int startPos, String description) { |
| super.handleSpecialSubstitution(replace, replaceWith, startPos, description); |
| |
| if (replace.equals("<dictionary>")) { |
| if (replaceWith.charAt(0) == '(') { |
| error("Dictionary group can't be enclosed in (", startPos, description); |
| } |
| dictionaryExpression = replaceWith; |
| dictionaryChars = CharSet.parseString(replaceWith); |
| } |
| } |
| |
| /** |
| * The other half of the logic to handle the dictionary characters happens |
| * here. After the inherited builder has derived the real character |
| * categories, we set up the categoryFlags array in the iterator. This array |
| * contains "true" for every character category that includes a dictionary |
| * character. |
| */ |
| protected void buildCharCategories(Vector<String> tempRuleList) { |
| super.buildCharCategories(tempRuleList); |
| |
| categoryFlags = new boolean[categories.size()]; |
| for (int i = 0; i < categories.size(); i++) { |
| CharSet cs = categories.elementAt(i); |
| if (!(cs.intersection(dictionaryChars).empty())) { |
| categoryFlags[i] = true; |
| } |
| } |
| } |
| |
| // This function is actually called by |
| // RuleBasedBreakIteratorBuilder.buildCharCategories(), which is called by |
| // the function above. This gives us a way to create a separate character |
| // category for the dictionary characters even when |
| // RuleBasedBreakIteratorBuilder isn't making a distinction. |
| protected void mungeExpressionList(Hashtable<String, Object> expressions) { |
| expressions.put(dictionaryExpression, dictionaryChars); |
| } |
| |
| void makeFile(String filename) { |
| super.setAdditionalData(super.toByteArray(categoryFlags)); |
| super.makeFile(filename); |
| } |
| } |