| /* |
| ******************************************************************************* |
| * Copyright (C) 2003-2010, International Business Machines Corporation and * |
| * others. All Rights Reserved. * |
| ******************************************************************************* |
| */ |
| package com.ibm.icu.dev.test.stringprep; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.UnsupportedEncodingException; |
| import java.util.MissingResourceException; |
| |
| import com.ibm.icu.text.StringPrep; |
| import com.ibm.icu.text.StringPrepParseException; |
| import com.ibm.icu.text.UCharacterIterator; |
| |
| /** |
| * @author ram |
| * |
| * This is a dumb implementation of NFS4 profiles. It is a direct port of |
| * C code, does not use Object Oriented principles. Quick and Dirty implementation |
| * for testing. |
| */ |
| public final class NFS4StringPrep { |
| |
| private StringPrep nfscss = null; |
| private StringPrep nfscsi = null; |
| private StringPrep nfscis = null; |
| private StringPrep nfsmxp = null; |
| private StringPrep nfsmxs = null; |
| //singleton instance |
| private static final NFS4StringPrep prep = new NFS4StringPrep(); |
| |
| |
| private NFS4StringPrep (){ |
| ClassLoader loader = NFS4StringPrep.class.getClassLoader(); |
| try{ |
| InputStream nfscsiFile = loader.getResourceAsStream("com/ibm/icu/dev/data/testdata/nfscsi.spp"); |
| nfscsi = new StringPrep(nfscsiFile); |
| nfscsiFile.close(); |
| |
| InputStream nfscssFile = loader.getResourceAsStream("com/ibm/icu/dev/data/testdata/nfscss.spp"); |
| nfscss = new StringPrep(nfscssFile); |
| nfscssFile.close(); |
| |
| InputStream nfscisFile = loader.getResourceAsStream("com/ibm/icu/dev/data/testdata/nfscis.spp"); |
| nfscis = new StringPrep(nfscisFile); |
| nfscisFile.close(); |
| |
| InputStream nfsmxpFile = loader.getResourceAsStream("com/ibm/icu/dev/data/testdata/nfsmxp.spp"); |
| nfsmxp = new StringPrep(nfsmxpFile); |
| nfsmxpFile.close(); |
| |
| InputStream nfsmxsFile = loader.getResourceAsStream("com/ibm/icu/dev/data/testdata/nfsmxs.spp"); |
| nfsmxs = new StringPrep(nfsmxsFile); |
| nfsmxsFile.close(); |
| }catch(IOException e){ |
| throw new MissingResourceException(e.toString(),"",""); |
| } |
| } |
| |
| private static byte[] prepare(byte[] src, StringPrep strprep) |
| throws StringPrepParseException, UnsupportedEncodingException{ |
| String s = new String(src, "UTF-8"); |
| UCharacterIterator iter = UCharacterIterator.getInstance(s); |
| StringBuffer out = strprep.prepare(iter,StringPrep.DEFAULT); |
| return out.toString().getBytes("UTF-8"); |
| } |
| |
| public static byte[] cs_prepare(byte[] src, boolean isCaseSensitive) |
| throws StringPrepParseException, UnsupportedEncodingException{ |
| if(isCaseSensitive == true ){ |
| return prepare(src, prep.nfscss); |
| }else{ |
| return prepare(src, prep.nfscsi); |
| } |
| } |
| |
| public static byte[] cis_prepare(byte[] src) |
| throws IOException, StringPrepParseException, UnsupportedEncodingException{ |
| return prepare(src, prep.nfscis); |
| } |
| |
| /* sorted array for binary search*/ |
| private static final String[] special_prefixes={ |
| "ANONYMOUS", |
| "AUTHENTICATED", |
| "BATCH", |
| "DIALUP", |
| "EVERYONE", |
| "GROUP", |
| "INTERACTIVE", |
| "NETWORK", |
| "OWNER", |
| }; |
| |
| |
| /* binary search the sorted array */ |
| private static final int findStringIndex(String[] sortedArr,String target){ |
| |
| int left, middle, right,rc; |
| |
| left =0; |
| right= sortedArr.length-1; |
| |
| while(left <= right){ |
| middle = (left+right)/2; |
| rc= sortedArr[middle].compareTo(target); |
| |
| if(rc<0){ |
| left = middle+1; |
| }else if(rc >0){ |
| right = middle -1; |
| }else{ |
| return middle; |
| } |
| } |
| return -1; |
| } |
| private static final char AT_SIGN = '@'; |
| |
| public static byte[] mixed_prepare(byte[] src) |
| throws IOException, StringPrepParseException, UnsupportedEncodingException{ |
| String s = new String(src, "UTF-8"); |
| int index = s.indexOf(AT_SIGN); |
| StringBuffer out = new StringBuffer(); |
| |
| if(index > -1){ |
| /* special prefixes must not be followed by suffixes! */ |
| String prefixString = s.substring(0,index); |
| int i= findStringIndex(special_prefixes, prefixString); |
| String suffixString = s.substring(index+1, s.length()); |
| if(i>-1 && !suffixString.equals("")){ |
| throw new StringPrepParseException("Suffix following a special index", StringPrepParseException.INVALID_CHAR_FOUND); |
| } |
| UCharacterIterator prefix = UCharacterIterator.getInstance(prefixString); |
| UCharacterIterator suffix = UCharacterIterator.getInstance(suffixString); |
| out.append(prep.nfsmxp.prepare(prefix,StringPrep.DEFAULT)); |
| out.append(AT_SIGN); // add the delimiter |
| out.append(prep.nfsmxs.prepare(suffix, StringPrep.DEFAULT)); |
| }else{ |
| UCharacterIterator iter = UCharacterIterator.getInstance(s); |
| out.append(prep.nfsmxp.prepare(iter,StringPrep.DEFAULT)); |
| |
| } |
| return out.toString().getBytes("UTF-8"); |
| } |
| |
| } |