tools/cldr-code/src/main/java/org/unicode/cldr/test/CheckAltOnly.java

package org.unicode.cldr.test;

import java.util.List;
import org.unicode.cldr.test.CheckCLDR.CheckStatus.Subtype;
import org.unicode.cldr.util.CLDRFile;
import org.unicode.cldr.util.Factory;
import org.unicode.cldr.util.XMLSource;
import org.unicode.cldr.util.XPathParts;

/** Check whether a path with alt is present but the corresponding path without alt is missing */
public class CheckAltOnly extends FactoryCheckCLDR {

    private static final String message =
            "A path with alt is present but the corresponding path without alt is missing; "
                    + "a solution might be to confirm the non-alt path";

    public CheckAltOnly(Factory factory) {
        super(factory);
    }

    @Override
    public CheckCLDR handleCheck(
            String path, String fullPath, String value, Options options, List<CheckStatus> result) {

        if (path == null || fullPath == null || path.indexOf("[@alt=") <= 0) {
            return this;
        }
        final CLDRFile file = getCldrFileToCheck();
        final String localeId = file.getLocaleID();
        if ("root".equals(localeId)) {
            return this;
        }
        if (!file.isHere(path)) {
            return this;
        }
        final String nonAltPath = XPathParts.getPathWithoutAlt(path);
        if (file.isHere(nonAltPath)) {
            return this;
        }
        if (file.getConstructedValue(nonAltPath) != null) {
            return this;
        }
        if (!accept(result)) return this;
        /*
         * If the source locale is not code-fallback, it's not an error.
         * getSourceLocaleIdExtended with skipInheritanceMarker = false means that if the
         * source locale has the value INHERITANCE_MARKER for the non-alt path, we stop there
         * and treat it as present, rather than continuing to the locale from which it would inherit.
         */
        String sourceLocaleId = file.getSourceLocaleIdExtended(nonAltPath, null, false);
        if (!XMLSource.CODE_FALLBACK_ID.equals(sourceLocaleId)) {
            return this;
        }
        /*
         * If currency symbol in alt is same as root's alt value, it's not an error
         */
        if (path.startsWith("//ldml/numbers/currencies/currency")) {
            final CLDRFile rootCldrFile = getFactory().make("root", true);
            if (value != null && value.equals(rootCldrFile.getStringValue(path))) {
                return this;
            }
        }
        final CheckStatus item =
                new CheckStatus()
                        .setCause(this)
                        .setMainType(CheckStatus.errorType)
                        .setSubtype(Subtype.missingNonAltPath)
                        .setMessage(message);
        result.add(item);
        return this;
    }
}