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/*
* WPCleaner: A tool to help on Wikipedia maintenance tasks.
* Copyright (C) 2013 Nicolas Vervelle
*
* See README.txt file for licensing information.
*/
package org.wikipediacleaner.api.check.algorithm;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.wikipediacleaner.api.check.CheckErrorResult;
import org.wikipediacleaner.api.data.PageAnalysis;
import org.wikipediacleaner.api.data.PageElementCategory;
import org.wikipediacleaner.api.data.PageElementLanguageLink;
import org.wikipediacleaner.api.data.PageElementTitle;
import org.wikipediacleaner.gui.swing.component.MWPane;
import org.wikipediacleaner.i18n.GT;
/**
* Algorithm for analyzing error 45 of check wikipedia project.
* Error 45: Interwiki double
*/
public class CheckErrorAlgorithm045 extends CheckErrorAlgorithmBase {
/**
* Possible global fixes.
*/
private final static String[] globalFixes = new String[] {
GT._T("Delete all"),
};
public CheckErrorAlgorithm045() {
super("Interwiki double");
}
/**
* Analyze a page to check if errors are present.
*
* @param analysis Page analysis.
* @param errors Errors found in the page.
* @param onlyAutomatic True if analysis could be restricted to errors automatically fixed.
* @return Flag indicating if the error was found.
*/
@Override
public boolean analyze(
PageAnalysis analysis,
Collection<CheckErrorResult> errors, boolean onlyAutomatic) {
if ((analysis == null) || (analysis.getPage() == null)) {
return false;
}
if (!analysis.getPage().isArticle()) {
return false;
}
// Group language links by index
List<PageElementLanguageLink> links = analysis.getLanguageLinks();
if ((links == null) || (links.isEmpty())) {
return false;
}
Map<String, List<PageElementLanguageLink>> groupedLinks = new HashMap<String, List<PageElementLanguageLink>>();
for (PageElementLanguageLink link : links) {
String index = link.getLanguage() + ":" + link.getLink();
List<PageElementLanguageLink> groupLink = groupedLinks.get(index);
if (groupLink == null) {
groupLink = new ArrayList<PageElementLanguageLink>();
groupedLinks.put(index, groupLink);
}
groupLink.add(link);
}
// Compute index of last index
List<PageElementTitle> titles = analysis.getTitles();
int lastIndex = 0;
if ((titles != null) && (!titles.isEmpty())) {
lastIndex = titles.get(titles.size() - 1).getEndIndex();
}
List<PageElementCategory> categories = analysis.getCategories();
if ((categories != null) && (!categories.isEmpty())) {
lastIndex = Math.max(lastIndex, categories.get(categories.size() - 1).getEndIndex());
}
// Check each language link
boolean result = false;
String contents = analysis.getContents();
for (PageElementLanguageLink link : links) {
String index = link.getLanguage() + ":" + link.getLink();
List<PageElementLanguageLink> groupLink = groupedLinks.get(index);
if ((groupLink != null) && (groupLink.size() > 1)) {
if (errors == null) {
return true;
}
result = true;
PageElementLanguageLink keepLink = keepLanguageLink(groupLink, lastIndex);
if (keepLink == link) {
CheckErrorResult errorResult = createCheckErrorResult(
analysis,
link.getBeginIndex(),
link.getEndIndex(),
CheckErrorResult.ErrorLevel.CORRECT);
errors.add(errorResult);
} else {
int beginIndex = link.getBeginIndex();
while ((beginIndex > 0) && (contents.charAt(beginIndex - 1) == ' ')) {
beginIndex--;
}
boolean beginLine = (beginIndex == 0) || (contents.charAt(beginIndex - 1) == '\n');
int endIndex = link.getEndIndex();
while ((endIndex < contents.length()) && (contents.charAt(endIndex) == ' ')) {
endIndex++;
}
boolean endLine = (endIndex >= contents.length()) || (contents.charAt(endIndex) == '\n');
if (beginLine && endLine) {
endIndex = Math.min(endIndex + 1, contents.length());
}
if (!beginLine) {
beginIndex = link.getBeginIndex();
}
if (!endLine) {
endIndex = link.getEndIndex();
}
CheckErrorResult errorResult = createCheckErrorResult(
analysis, beginIndex, endIndex);
errorResult.addReplacement("", GT._T("Delete"));
errors.add(errorResult);
}
}
}
return result;
}
/**
* @param links List of language links for the same index.
* @param lastIndex Index of the last title / last category.
* @return Which language link should be kept.
*/
private PageElementLanguageLink keepLanguageLink(
List<PageElementLanguageLink> links, int lastIndex) {
// First: language link after last index
for (PageElementLanguageLink link : links) {
if (link.getBeginIndex() >= lastIndex) {
return link;
}
}
// Last: last language link
return links.get(links.size() - 1);
}
/**
* Bot fixing of all the errors in the page.
*
* @param analysis Page analysis.
* @return Page contents after fix.
*/
@Override
protected String internalBotFix(PageAnalysis analysis) {
return fix(globalFixes[0], analysis, null);
}
/**
* @return List of possible global fixes.
*/
@Override
public String[] getGlobalFixes() {
return globalFixes;
}
/**
* Fix all the errors in the page.
*
* @param fixName Fix name (extracted from getGlobalFixes()).
* @param analysis Page analysis.
* @param textPane Text pane.
* @return Page contents after fix.
*/
@Override
public String fix(String fixName, PageAnalysis analysis, MWPane textPane) {
return fixUsingFirstReplacement(fixName, analysis);
}
}