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/* LanguageTool, a natural language style checker
* Copyright (C) 2005 Daniel Naber (http://www.danielnaber.de)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
* USA
*/
package de.danielnaber.languagetool.rules;
import java.util.ArrayList;
import java.util.List;
import java.util.ResourceBundle;
import de.danielnaber.languagetool.AnalyzedSentence;
import de.danielnaber.languagetool.AnalyzedTokenReadings;
/**
* A rule that matches commas and closing parenthesis preceded by whitespace and
* opening parenthesis followed by whitespace.
*
* @author Daniel Naber
*/
public class CommaWhitespaceRule extends Rule {
public CommaWhitespaceRule(final ResourceBundle messages) {
super(messages);
super.setCategory(new Category(messages.getString("category_misc")));
}
public final String getId() {
return "COMMA_PARENTHESIS_WHITESPACE";
}
public final String getDescription() {
return messages.getString("desc_comma_whitespace");
}
public final RuleMatch[] match(final AnalyzedSentence text) {
final List<RuleMatch> ruleMatches = new ArrayList<RuleMatch>();
final AnalyzedTokenReadings[] tokens = text.getTokens();
String prevToken = "";
String prevPrevToken = "";
boolean prevWhite = false;
int pos = 0;
int prevLen = 0;
for (int i = 0; i < tokens.length; i++) {
final String token = tokens[i].getToken();
final boolean isWhite = tokens[i].isWhitespace()
|| tokens[i].isFieldCode();
pos += token.length();
String msg = null;
int fixLen = 0;
String suggestionText = null;
if (isWhite && isLeftBracket(prevToken)) {
msg = messages.getString("no_space_after");
suggestionText = prevToken;
fixLen = 1;
} else if (!isWhite && prevToken.equals(",")
&& isNotQuoteOrHyphen(token)
&& containsNoNumber(prevPrevToken)
&& containsNoNumber(token)
&& !",".equals(prevPrevToken)) {
msg = messages.getString("missing_space_after_comma");
suggestionText = ", ";
} else if (prevWhite) {
if (isRightBracket(token)) {
msg = messages.getString("no_space_before");
suggestionText = token;
fixLen = 1;
} else if (token.equals(",")) {
msg = messages.getString("space_after_comma");
suggestionText = ",";
fixLen = 1;
//exception for duplicated comma (we already have another rule for that)
if (i + 1 < tokens.length
&& ",".equals(tokens[i + 1].getToken())) {
msg = null;
}
} else if (token.equals(".")) {
msg = messages.getString("no_space_before_dot");
suggestionText = ".";
fixLen = 1;
// exception case for figures such as ".5" and ellipsis
if (i + 1 < tokens.length
&& isNumberOrDot(tokens[i + 1].getToken())) {
msg = null;
}
}
}
if (msg != null) {
final int fromPos = tokens[i - 1].getStartPos();
final int toPos = tokens[i - 1].getStartPos() + fixLen + prevLen;
// TODO: add some good short comment here
final RuleMatch ruleMatch = new RuleMatch(this, fromPos, toPos, msg);
ruleMatch.setSuggestedReplacement(suggestionText);
ruleMatches.add(ruleMatch);
}
prevPrevToken = prevToken;
prevToken = token;
prevWhite = isWhite && !tokens[i].isFieldCode(); //OOo code before comma/dot
prevLen = tokens[i].getToken().length();
}
return toRuleMatchArray(ruleMatches);
}
static boolean isNotQuoteOrHyphen(final String str) {
if (str.length() == 1) {
final char c = str.charAt(0);
if (c =='\'' || c == '-' || c == '”'
|| c =='’' || c == '"' || c == '“'
|| c == ',') {
return false;
}
} else {
if (""".equals(str)) {
return false;
}
return containsNoNumber(str);
}
return true;
}
static boolean isNumberOrDot(final String str) {
final char c = str.charAt(0);
return (c == '.' || Character.isDigit(c));
}
static boolean isLeftBracket(final String str) {
if (str.length() == 0) {
return false;
}
final char c = str.charAt(0);
return (c == '(' || c == '[' || c == '{');
}
static boolean isRightBracket(final String str) {
if (str.length() == 0) {
return false;
}
final char c = str.charAt(0);
return (c == ')' || c == ']' || c == '}');
}
static boolean containsNoNumber(final String str) {
for (int i = 0; i < str.length(); i++) {
if (Character.isDigit(str.charAt(i))) {
return false;
}
}
return true;
}
public void reset() {
// nothing
}
}
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