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Merge pull request #2445 from benwoo1110/fix-help

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Fix issue where special chars cause PatternSyntaxException
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nicegamer7 2021-07-16 09:51:21 -04:00 committed by GitHub
commit 9ce2dfd100
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2 changed files with 19 additions and 14 deletions
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20
src/main/java/com/onarandombox/MultiverseCore/commands/HelpCommand.java
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@ -40,24 +40,16 @@ public class HelpCommand extends PaginatedCoreCommand<Command> {
@Override
protected List<Command> getFilteredItems(List<Command> availableItems, String filter) {
String expression = "(?i).*" + cleanFilter(filter) + ".*";
List<Command> filtered = new ArrayList<Command>();
for (Command c : availableItems) {
if (stitchThisString(c.getKeyStrings()).matches("(?i).*" + filter + ".*")) {
if (stitchThisString(c.getKeyStrings()).matches(expression)
|| c.getCommandName().matches(expression)
|| c.getCommandDesc().matches(expression)
|| c.getCommandUsage().matches(expression)
|| c.getCommandExamples().stream().anyMatch(eg -> eg.matches(expression))) {
filtered.add(c);
} else if (c.getCommandName().matches("(?i).*" + filter + ".*")) {
filtered.add(c);
} else if (c.getCommandDesc().matches("(?i).*" + filter + ".*")) {
filtered.add(c);
} else if (c.getCommandUsage().matches("(?i).*" + filter + ".*")) {
filtered.add(c);
} else {
for (String example : c.getCommandExamples()) {
if (example.matches("(?i).*" + filter + ".*")) {
filtered.add(c);
break;
}
}
}
}
return filtered;

13
src/main/java/com/onarandombox/MultiverseCore/commands/PaginatedCommand.java
View File

@ -13,12 +13,14 @@ import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;
import java.util.List;
import java.util.regex.Pattern;
/**
* A generic paginated command.
* @param <T> The type of items on the page.
*/
public abstract class PaginatedCommand<T> extends Command {
private final Pattern REGEX_SPECIAL_CHARS = Pattern.compile("[.+*?\\[^\\]$(){}=!<>|:-\\\\]");
private static final int DEFAULT_ITEMS_PER_PAGE = 9;
/**
* The number of items per page.
@ -40,12 +42,23 @@ public abstract class PaginatedCommand<T> extends Command {
/**
* Gets filtered items.
*
* @param availableItems All available items.
* @param filter The filter-{@link String}.
* @return A list of items that match the filter.
*/
protected abstract List<T> getFilteredItems(List<T> availableItems, String filter);
/**
* Escape regex special characters from filter
*
* @param filter The filter-{@link String}.
* @return String with regex characters escaped
*/
protected String cleanFilter(String filter) {
return REGEX_SPECIAL_CHARS.matcher(filter).replaceAll("\\\\$0");
}
/**
* Constructs a single string from a list of strings.
*