mirror of https://github.com/nitu2003/T18n
101 lines
2.5 KiB
Java
101 lines
2.5 KiB
Java
package cn.glycol.t18n;
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import java.nio.charset.Charset;
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import java.util.ArrayList;
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import java.util.List;
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@SuppressWarnings("unused")
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public class I18n {
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private static LanguageMap map;
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private static Charset charset;
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public static final int LOOP_MAX_COUNT = 1000;
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static {
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charset = Charset.forName(System.getProperty("file.encoding"));
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}
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public static void setLanguageMap(LanguageMap map) {
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I18n.map = map;
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}
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public static void setEncoding(String charset) {
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I18n.charset = Charset.forName(charset);
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}
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/** 自动从语言文件中提取翻译，空翻译时返回原键值 */
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public static String translate(String key) {
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return reEncode(getLanguageMapSafe().get(key), charset);
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}
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/** 自动翻译（translate）后再执行格式化（format） */
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public static String format(String key, Object...format) {
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return tryFormat(
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translate(key),
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format);
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}
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/**
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* 连续读取翻译（translate）。
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* @param keyRegular 翻译键值表达式，需要填入一个“%s”用于替换为行数。行数从0开始。例如“welcome.%s”，则程序会依次向列表中添加“welcome.0”，“welcome.1”...的翻译，直到获取到空值。
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*/
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public static List<String> translateList(String keyRegular) {
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List<String> vlist = new ArrayList<String>();
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int i = 0;
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while(true) {
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if(i >= LOOP_MAX_COUNT) break;
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String k = tryFormat(keyRegular, i);
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if(hasKey(k)) {
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vlist.add(translate(k));
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} else {
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break;
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}
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i++;
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}
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return vlist;
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}
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/**
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* 将列表翻译中的内容进行format操作。
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* @see #translateList(String)
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*/
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public static String formatList(String keyRegular, Object...format) {
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return tryFormat(T18nUtils.flattenList(translateList(keyRegular)), format);
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}
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public static boolean hasKey(String key) {
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return getLanguageMapSafe().containsKey(key);
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}
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/** @see #hasKey(String) */
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private static boolean canTranslate(String key) {
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return hasKey(key);
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}
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private static String reEncode(String bef, Charset charset) {
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byte[] bytes = bef.getBytes();
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return new String(bytes, charset);
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}
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private static String tryFormat(String context, Object...format) {
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try {
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return String.format(context, format);
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} catch (Exception e) {
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return context;
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}
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}
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private static LanguageMap getLanguageMapSafe() {
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return map == null ? new LanguageMap() : map;
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}
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}
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