1 // Copyright 2011 Google Inc. All Rights Reserved.
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
7 // http://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
15 package com.hughes.android.dictionary.parser;
17 import java.io.BufferedReader;
19 import java.io.FileInputStream;
20 import java.io.IOException;
21 import java.io.InputStreamReader;
22 import java.nio.charset.Charset;
23 import java.util.Arrays;
24 import java.util.Collections;
25 import java.util.LinkedHashSet;
27 import java.util.logging.Logger;
28 import java.util.regex.Matcher;
29 import java.util.regex.Pattern;
31 import com.hughes.android.dictionary.engine.DictionaryBuilder;
32 import com.hughes.android.dictionary.engine.EntrySource;
33 import com.hughes.android.dictionary.engine.EntryTypeName;
34 import com.hughes.android.dictionary.engine.IndexBuilder;
35 import com.hughes.android.dictionary.engine.IndexedEntry;
36 import com.hughes.android.dictionary.engine.Language;
37 import com.hughes.android.dictionary.engine.PairEntry;
39 public class DictFileParser implements Parser {
41 static final Logger logger = Logger.getLogger(DictFileParser.class.getName());
44 public static final Pattern TAB = Pattern.compile("\\t");
47 public static final Pattern DOUBLE_COLON = Pattern.compile(" :: ");
48 public static final Pattern PIPE = Pattern.compile("\\|");
50 static final Pattern SPACES = Pattern.compile("\\s+");
52 static final Pattern BRACKETED = Pattern.compile("\\[([^]]+)\\]");
53 static final Pattern PARENTHESIZED = Pattern.compile("\\(([^)]+)\\)");
54 static final Pattern CURLY_BRACED = Pattern.compile("\\{([^}]+)\\}");
56 // http://www.regular-expressions.info/unicode.html
57 static final Pattern NON_CHAR_DASH = Pattern.compile("[^-'\\p{L}\\p{M}\\p{N}]+");
58 public static final Pattern NON_CHAR = Pattern.compile("[^\\p{L}\\p{M}\\p{N}]+");
60 static final Pattern TRIM_PUNC = Pattern.compile("^[^\\p{L}\\p{M}\\p{N}]+|[^\\p{L}\\p{M}\\p{N}]+$");
62 final Charset charset;
63 final boolean flipCols;
65 final Pattern fieldSplit;
66 final Pattern subfieldSplit;
68 final DictionaryBuilder dictBuilder;
69 final IndexBuilder[] langIndexBuilders;
70 final IndexBuilder bothIndexBuilder;
72 EntrySource entrySource;
74 // final Set<String> alreadyDone = new HashSet<String>();
76 public DictFileParser(final Charset charset, boolean flipCols,
77 final Pattern fieldSplit, final Pattern subfieldSplit,
78 final DictionaryBuilder dictBuilder, final IndexBuilder[] langIndexBuilders,
79 final IndexBuilder bothIndexBuilder) {
80 this.charset = charset;
81 this.flipCols = flipCols;
82 this.fieldSplit = fieldSplit;
83 this.subfieldSplit = subfieldSplit;
84 this.dictBuilder = dictBuilder;
85 this.langIndexBuilders = langIndexBuilders;
86 this.bothIndexBuilder = bothIndexBuilder;
90 public void parse(final File file, final EntrySource entrySouce, final int pageLimit) throws IOException {
91 this.entrySource = entrySouce;
92 final BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), charset));
95 while ((line = reader.readLine()) != null) {
96 if (pageLimit >= 0 && count >= pageLimit) {
99 if (count % 10000 == 0) {
100 logger.info("count=" + count + ", line=" + line);
107 private void parseLine(final String line) {
108 if (line.startsWith("#") || line.length() == 0) {
109 logger.info("Skipping comment line: " + line);
112 final String[] fields = fieldSplit.split(line);
113 // dictcc now has a part of speech field as field #3.
114 if (fields.length < 2 || fields.length > 3) {
115 logger.warning("Malformed line: " + line);
119 fields[0] = SPACES.matcher(fields[0]).replaceAll(" ").trim();
120 fields[1] = SPACES.matcher(fields[1]).replaceAll(" ").trim();
122 final String temp = fields[0];
123 fields[0] = fields[1];
127 final String[][] subfields = new String[2][];
128 if (subfieldSplit != null) {
129 subfields[0] = subfieldSplit.split(fields[0]);
130 subfields[1] = subfieldSplit.split(fields[1]);
131 if (subfields[0].length != subfields[1].length) {
132 logger.warning("Number of subfields doesn't match: " + line);
136 subfields[0] = new String[] { fields[0] };
137 subfields[1] = new String[] { fields[1] };
140 final PairEntry pairEntry = new PairEntry(entrySource);
141 for (int i = 0; i < subfields[0].length; ++i) {
142 subfields[0][i] = subfields[0][i].trim();
143 subfields[1][i] = subfields[1][i].trim();
144 if (subfields[0][i].length() == 0 && subfields[1][i].length() == 0) {
145 logger.warning("Empty pair: " + line);
148 if (subfields[0][i].length() == 0) {
149 subfields[0][i] = "__";
151 if (subfields[1][i].length() == 0) {
152 subfields[1][i] = "__";
154 pairEntry.pairs.add(new PairEntry.Pair(subfields[0][i], subfields[1][i]));
156 final IndexedEntry entryData = new IndexedEntry(pairEntry);
157 entryData.isValid = true;
159 for (int l = 0; l < 2; ++l) {
160 // alreadyDone.clear();
162 for (int j = 0; j < subfields[l].length; ++j) {
163 String subfield = subfields[l][j];
164 final IndexBuilder indexBuilder = langIndexBuilders[l];
165 if (indexBuilder.index.sortLanguage == Language.de) {
166 subfield = parseField_DE(indexBuilder, subfield, entryData, j);
167 } else if (indexBuilder.index.sortLanguage == Language.en) {
168 subfield = parseField_EN(indexBuilder, subfield, entryData, j);
170 parseFieldGeneric(indexBuilder, subfield, entryData, j, subfields[l].length);
175 private void parseFieldGeneric(final IndexBuilder indexBuilder, String field,
176 final IndexedEntry entryData, final int subfieldIdx, final int numSubFields) {
177 // remove bracketed and parenthesized stuff.
178 final StringBuilder bracketed = new StringBuilder();
179 final StringBuilder parenthesized = new StringBuilder();
182 while ((matcher = BRACKETED.matcher(field)).find()) {
183 bracketed.append(matcher.group(1)).append(" ");
184 field = matcher.replaceFirst(" ");
187 while ((matcher = PARENTHESIZED.matcher(field)).find()) {
188 parenthesized.append(matcher.group(1)).append(" ");
189 field = matcher.replaceFirst(" ");
192 field = SPACES.matcher(field).replaceAll(" ").trim();
194 // split words on non -A-z0-9, do them.
195 final String[] tokens = NON_CHAR_DASH.split(field);
197 final EntryTypeName entryTypeName;
198 if (numSubFields == 1) {
199 assert subfieldIdx == 0;
200 if (tokens.length == 1) {
201 entryTypeName = EntryTypeName.ONE_WORD;
202 } else if (tokens.length == 2) {
203 entryTypeName = EntryTypeName.TWO_WORDS;
204 } else if (tokens.length == 3) {
205 entryTypeName = EntryTypeName.THREE_WORDS;
206 } else if (tokens.length == 4) {
207 entryTypeName = EntryTypeName.FOUR_WORDS;
209 entryTypeName = EntryTypeName.FIVE_OR_MORE_WORDS;
212 assert numSubFields > 1;
213 if (subfieldIdx == 0) {
214 if (tokens.length == 1) {
215 entryTypeName = EntryTypeName.MULTIROW_HEAD_ONE_WORD;
217 entryTypeName = EntryTypeName.MULTIROW_HEAD_MANY_WORDS;
220 assert subfieldIdx > 0;
221 if (tokens.length == 1) {
222 entryTypeName = EntryTypeName.MULTIROW_TAIL_ONE_WORD;
224 entryTypeName = EntryTypeName.MULTIROW_TAIL_MANY_WORDS;
229 for (String token : tokens) {
230 token = TRIM_PUNC.matcher(token).replaceAll("");
231 if (/*!alreadyDone.contains(token) && */token.length() > 0) {
232 indexBuilder.addEntryWithTokens(entryData, Collections.singleton(token), entryTypeName);
233 // alreadyDone.add(token);
235 // also split words on dashes, do them, too.
236 if (token.contains("-")) {
237 final String[] dashed = token.split("-");
238 for (final String dashedToken : dashed) {
239 if (/*!alreadyDone.contains(dashedToken) && */dashedToken.length() > 0) {
240 indexBuilder.addEntryWithTokens(entryData, Collections.singleton(dashedToken), EntryTypeName.PART_OF_HYPHENATED);
245 } // if (!alreadyDone.contains(token)) {
246 } // for (final String token : tokens) {
248 // process bracketed stuff (split on spaces and dashes always)
249 final String[] bracketedTokens = NON_CHAR.split(bracketed.toString());
250 for (final String token : bracketedTokens) {
251 assert !token.contains("-");
252 if (/*!alreadyDone.contains(token) && */token.length() > 0) {
253 indexBuilder.addEntryWithTokens(entryData, Collections.singleton(token), EntryTypeName.BRACKETED);
257 // process paren stuff
258 final String[] parenTokens = NON_CHAR.split(parenthesized.toString());
259 for (final String token : parenTokens) {
260 assert !token.contains("-");
261 if (/*!alreadyDone.contains(token) && */token.length() > 0) {
262 indexBuilder.addEntryWithTokens(entryData, Collections.singleton(token), EntryTypeName.PARENTHESIZED);
268 private String parseField_DE(final IndexBuilder indexBuilder, String field,
269 final IndexedEntry entryData, final int subfieldIdx) {
271 // final Matcher matcher = DE_NOUN.matcher(field);
272 // while (matcher.find()) {
273 // final String noun = matcher.group(1);
274 //final String gender = matcher.group(2);
275 // if (alreadyDone.add(noun)) {
276 // System.out.println("Found DE noun " + noun + ", " + gender);
277 // final List<EntryData> entries = indexBuilder.getOrCreateEntries(noun, EntryTypeName.NOUN);
278 // entries.add(entryData);
282 // In English, curly braces are used for different tenses.
283 field = CURLY_BRACED.matcher(field).replaceAll(" ");
288 private String parseField_EN(final IndexBuilder indexBuilder, String field,
289 final IndexedEntry entryData, final int subfieldIdx) {
290 if (field.startsWith("to ")) {
291 field = field.substring(3);
296 public static Set<String> tokenize(final String text, final Pattern pattern) {
297 final String[] split = pattern.split(text);
298 final Set<String> result = new LinkedHashSet<>(Arrays.asList(split));