J2ME版IM源码（类似QQ）

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov. // Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html // Decompiler options: packimports(3) fieldsfirst ansi import java.io.*; import java.util.Vector; import javax.microedition.lcdui.*; import javax.microedition.rms.RecordStore; import javax.microedition.rms.RecordStoreNotFoundException; public class PkgTools { private static final String DBName = "QQDB"; private static final int C_Record_Num = 13; private static final int C_BlackListStart = 3; private static String DBStrings[] = new String[13]; public PkgTools() { } public static String To2Str(int i) { if(i < 10) return "0" + i; else return "" + i; } public static Image createImage(String s) { Image image = null; try { image = Image.createImage(s); } catch(IOException ioexception) { } return image; } public static void EmptyForm(Form form) { for(int i = form.size() - 1; i >= 0; i--) form.delete(i); } public static void EmptyList(List list) { for(int i = list.size() - 1; i >= 0; i--) list.delete(i); } public static String Encodecgi(String s) {//编码函数：将字符串中的' '、'&'、','、'\r'、'\t'、'\n'、'%'、'=' //这些字符转换成形如%XX的形式，其中XX为上述字符的ASCII码的十六进制形式； StringBuffer stringbuffer = new StringBuffer(); if(s == null) return ""; char ac[] = s.toCharArray(); int i = ac.length; if(i == 0) return ""; for(int j = 0; j < i; j++) if(ac[j] == ' ' || ac[j] == '&' || ac[j] == ',' || ac[j] == '\r' || ac[j] == '\t' || ac[j] == '\n' || ac[j] == '%' || ac[j] == '=') { String s1 = Integer.toHexString(ac[j]); if(s1.length() == 1) stringbuffer.append("%0" + s1); else stringbuffer.append("%" + s1); } else { stringbuffer.append(ac[j]); } return stringbuffer.toString(); } public static String Decodecgi(String s) {//解码函数，将含有形如%XX的十六进制数据的字符串中的%XX转换成一个字符； //返回转换后的字符串； StringBuffer stringbuffer = new StringBuffer(); if(s == null) return ""; char ac[] = s.toCharArray(); int j = ac.length; if(j == 0) return ""; for(int i = 0; i < j;) if(ac[i] == '%') { String s1 = String.valueOf(ac, i + 1, 2); char c; try { c = (char)Integer.parseInt(s1, 16); } catch(Exception exception) { c = ' '; } stringbuffer.append(c); i += 3; } else { stringbuffer.append(ac[i]); i++; } return stringbuffer.toString(); } public static String GetParaVal(String s, String s1) { String s2 = null; int i = 0; int j = 0; int k = 0; int l = 0; if(s == null || s1 == null) return ""; s = s + "="; k = s.length(); l = s1.length(); if(l == 0) return ""; if(k == 0 || k > 9) return ""; i = s1.indexOf(s); if(i == -1) return ""; j = s1.indexOf(38, i); if(j == -1) s2 = s1.substring(i + k); else s2 = s1.substring(i + k, j); return s2; } public static int GetMultiPara(String as[], String s) { int i = 0; String s1 = null; int j = 0; int k = 0; boolean flag = false; if(as == null || s == null) return -1; j = s.length(); if(j >= 2560) return -1; i = s.indexOf(44); if(i == -1) { as[0] = s; return 1; } as[0] = s.substring(0, i); if(++k == as.length) return k; for(s1 = s.substring(i + 1); (i = s1.indexOf(44)) != -1; s1 = s1.substring(i + 1)) { as[k] = s1.substring(0, i); if(++k == as.length) return k; } as[k] = s1; return ++k; } public static byte[] Unicode2Byte(String s) { int i = s.length(); byte abyte0[] = new byte[i << 1]; int j = 0; for(int k = 0; k < i; k++) { char c = s.charAt(k); abyte0[j++] = (byte)(c & 0xff); abyte0[j++] = (byte)(c >> 8); } return abyte0; } public static byte[] convertUnicode2UTF8Byte(String s) { int i = s.length(); byte abyte0[] = new byte[i << 2]; int j = 0; for(int k = 0; k < i; k++) { char c = s.charAt(k); if(c < '\200') abyte0[j++] = (byte)c; else if(c < '\u0800') { abyte0[j++] = (byte)(c >> 6 & 0x1f | 0xc0); abyte0[j++] = (byte)(c & 0x3f | 0x80); } else if(c < '\0') { abyte0[j++] = (byte)(c >> 12 & 0xf | 0xe0); abyte0[j++] = (byte)(c >> 6 & 0x3f | 0x80); abyte0[j++] = (byte)(c & 0x3f | 0x80); } else if(c < '\0') { abyte0[j++] = (byte)(c >> 18 & 0x7 | 0xf0); abyte0[j++] = (byte)(c >> 12 & 0x3f | 0x80); abyte0[j++] = (byte)(c >> 6 & 0x3f | 0x80); abyte0[j++] = (byte)(c & 0x3f | 0x80); } } byte abyte1[] = new byte[j]; for(int l = 0; l < j; l++) abyte1[l] = abyte0[l]; return abyte1; } public static void saveDB() { label0: { RecordStore recordstore = null; ByteArrayOutputStream bytearrayoutputstream = new ByteArrayOutputStream(); DataOutputStream dataoutputstream = new DataOutputStream(bytearrayoutputstream); Object obj = null; try { recordstore = RecordStore.openRecordStore("QQDB", true); int i = recordstore.getNumRecords(); for(int j = 0; j < 13; j++) dataoutputstream.writeUTF(DBStrings[j]); byte abyte0[] = bytearrayoutputstream.toByteArray(); if(i == 0) recordstore.addRecord(abyte0, 0, abyte0.length); else recordstore.setRecord(1, abyte0, 0, abyte0.length); } catch(Exception exception2) { try { dataoutputstream.close(); } catch(Exception exception3) { } if(recordstore != null) try { recordstore.closeRecordStore(); } catch(Exception exception4) { } break label0; } finally { try { dataoutputstream.close(); } catch(Exception exception6) { } if(recordstore != null) try { recordstore.closeRecordStore();