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view app/src/main/java/org/tn5250j/encoding/ToolboxCodePageFactory.java @ 527:9e9d6eb9a9c4 default tip
Added tag stable-1.9.4-8 for changeset 9a8862b87f6e
author | Carl Byington <carl@five-ten-sg.com> |
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date | Sat, 01 Jun 2024 10:41:51 -0600 |
parents | d29cce60f393 |
children |
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/** * Title: ToolboxCodePage * Copyright: Copyright (c) 2001, 2002, 2003 * Company: * @author Kenneth J. Pouncey * rewritten by LDC, WVL, Luc * @version 0.4 * * Description: * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this software; see the file COPYING. If not, write to * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307 USA * */ package org.tn5250j.encoding; import java.lang.reflect.Constructor; import java.lang.reflect.Method; import android.util.Log; class ToolboxCodePageFactory { private static final String TAG = "ToolboxCodePageFactory"; private final static String[] CODEPAGES = { "Big5", "Cp037", "Cp273", "Cp277", "Cp278", "Cp280", "Cp284", "Cp285", "Cp297", "Cp420", "Cp424", "Cp437", "Cp500", "Cp737", "Cp775", "Cp838", "Cp850", "Cp852", "Cp855", "Cp856", "Cp857", "Cp858", "Cp860", "Cp861", "Cp862", "Cp863", "Cp864", "Cp865", "Cp866", "Cp868", "Cp869", "Cp870", "Cp871", "Cp874", "Cp875", "Cp918", "Cp921", "Cp922", "Cp923", // IBM Latin-9. "Cp930", "Cp933", "Cp935", "Cp937", "Cp939", "Cp942", "Cp943", "Cp948", "Cp949", "Cp950", "Cp964", "Cp970", "Cp1006", "Cp1025", "Cp1026", "Cp1046", "Cp1097", "Cp1098", "Cp1112", "Cp1122", "Cp1123", "Cp1124", "Cp1140", "Cp1141", "Cp1142", "Cp1143", "Cp1144", "Cp1145", "Cp1146", "Cp1147", "Cp1148", "Cp1149", "Cp1252", "Cp1250", "Cp1251", "Cp1253", "Cp1254", "Cp1255", "Cp1256", "Cp1257", "Cp1258", "Cp1381", "Cp1383", "Cp33722" }; private static final String CONVERTER_NAME = "com.ibm.as400.access.CharConverter"; private static final String TOBYTES_NAME = "stringToByteArray"; private static final String TOSTRING_NAME = "byteArrayToString"; private static ToolboxCodePageFactory singleton; private ToolboxCodePageFactory() { /* private for singleton */ } public static synchronized ToolboxCodePageFactory getInstance() { if (singleton == null) { singleton = new ToolboxCodePageFactory(); } return singleton; } /** * @return */ public String[] getAvailableCodePages() { try { final ClassLoader loader = getClassLoader(); Class.forName(CONVERTER_NAME, false, loader); return CODEPAGES; } catch (Exception e) { Log.i(TAG, "Couldn't locate JT400 Toolbox in classpath. Charset converters can't be used."); return new String[0]; } } /** * @param encoding * @return */ public ICodePage getCodePage(String encoding) { try { ClassLoader loader = getClassLoader(); Class<?> conv_class = Class.forName(CONVERTER_NAME, true, loader); Constructor<?> conv_constructor = conv_class.getConstructor(new Class[] { String.class }); Method toBytes_method = conv_class.getMethod(TOBYTES_NAME, new Class[] { String.class }); Method toString_method = conv_class.getMethod(TOSTRING_NAME, new Class[] { byte[].class }); Object convobj = conv_constructor.newInstance(new Object[] { encoding }); return new ToolboxConverterProxy(convobj, toBytes_method, toString_method); } catch (Exception e) { Log.w(TAG, "Can't load charset converter from JT400 Toolbox for code page " + encoding, e); return null; } } private static final ClassLoader getClassLoader() { ClassLoader loader = ToolboxCodePageFactory.class.getClassLoader(); if (loader == null) { loader = ClassLoader.getSystemClassLoader(); } return loader; } private static class ToolboxConverterProxy implements ICodePage { private final Object converter; private final Method tobytesMethod; private final Method tostringMethod; private ToolboxConverterProxy(Object converterObject, Method tobytesMethod, Method tostringMethod) { super(); this.converter = converterObject; this.tobytesMethod = tobytesMethod; this.tostringMethod = tostringMethod; } public char ebcdic2uni(int index) { Object result; try { result = tostringMethod.invoke(converter, new Object[] { new byte[] { (byte)(index & 0xFF) } }); } catch (Throwable t) { result = null; } if (result == null) return 0x00; return ((String) result).charAt(0); } public byte uni2ebcdic(char index) { Object result; try { result = tobytesMethod.invoke(converter, new Object[] { new String(new char[] { index }) }); } catch (Throwable t) { result = null; } if (result == null) return 0x00; return ((byte[]) result)[0]; } } }