NotEnoughItems/src/main/java/codechicken/nei/SearchTextFormatter.java

package codechicken.nei;

import java.util.List;
import java.util.StringJoiner;

import net.minecraft.util.EnumChatFormatting;

import codechicken.nei.FormattedTextField.TextFormatter;
import codechicken.nei.SearchTokenParser.SearchToken;

public class SearchTextFormatter implements TextFormatter {

    protected final SearchTokenParser searchParser;

    public SearchTextFormatter(SearchTokenParser searchParser) {
        this.searchParser = searchParser;
    }

    public String format(String text) {
        final String[] parts = (text + "| ").split("\\|");
        StringJoiner formattedText = new StringJoiner(EnumChatFormatting.GRAY + "|");

        for (int i = 0; i < parts.length - 1; i++) {
            final String filterText = parts[i];
            final List<SearchToken> tokens = searchParser.splitSearchText(filterText);
            StringBuilder formattedPart = new StringBuilder();
            int startIndex = 0;

            for (SearchToken token : tokens) {
                formattedPart.append(filterText.substring(startIndex, token.start));
                EnumChatFormatting tokenColor = EnumChatFormatting.RESET;

                if (token.firstChar != null) {
                    tokenColor = searchParser.getProvider(token.firstChar).getHighlightedColor();
                }

                if (token.ignore) {
                    formattedPart.append(EnumChatFormatting.BLUE + "-");
                }

                if (token.firstChar != null) {
                    formattedPart.append(tokenColor + String.valueOf(token.firstChar));
                }

                if (token.quotes) {
                    formattedPart.append(EnumChatFormatting.GOLD + "\"");
                }

                if (!token.rawText.isEmpty()) {
                    formattedPart.append(tokenColor + token.rawText);
                }

                if (token.quotes) {
                    formattedPart.append(EnumChatFormatting.GOLD + "\"");
                }

                startIndex = token.end;
            }

            formattedPart.append(filterText.substring(startIndex, filterText.length()));
            formattedText.add(formattedPart);
        }

        return formattedText.toString();
    }
}