61 lines
1.9 KiB
Java
61 lines
1.9 KiB
Java
package de.marhali.easyi18n.io;
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import de.marhali.easyi18n.util.StringUtil;
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import org.apache.commons.lang.StringEscapeUtils;
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import java.text.MessageFormat;
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import java.util.Iterator;
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import java.util.function.Consumer;
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import java.util.function.Function;
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import java.util.regex.Pattern;
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/**
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* Simple array support for translation values.
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* Some i18n systems allows the user to define array values for some translations.
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* We support array values by wrapping them into: '!arr[valueA;valueB]'.
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*
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* @author marhali
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*/
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public abstract class ArrayMapper {
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static final String PREFIX = "!arr[";
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static final String SUFFIX = "]";
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static final char DELIMITER = ';';
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public static final String SPLITERATOR_REGEX =
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MessageFormat.format("(?<!\\\\){0}", Pattern.quote(String.valueOf(DELIMITER)));
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protected static <T> String read(Iterator<T> elements, Function<T, String> stringFactory) {
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StringBuilder builder = new StringBuilder(PREFIX);
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int i = 0;
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while(elements.hasNext()) {
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if(i > 0) {
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builder.append(DELIMITER);
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}
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String value = stringFactory.apply(elements.next());
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builder.append(StringUtil.escapeControls(
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value.replace(String.valueOf(DELIMITER), "\\" + DELIMITER), true));
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i++;
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}
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builder.append(SUFFIX);
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return builder.toString();
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}
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protected static void write(String concat, Consumer<String> writeElement) {
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concat = concat.substring(PREFIX.length(), concat.length() - SUFFIX.length());
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for(String element : concat.split(SPLITERATOR_REGEX)) {
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element = element.replace("\\" + DELIMITER, String.valueOf(DELIMITER));
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writeElement.accept(StringEscapeUtils.unescapeJava(element));
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}
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}
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public static boolean isArray(String concat) {
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return concat != null && concat.startsWith(PREFIX) && concat.endsWith(SUFFIX);
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}
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} |