1 package org.bouncycastle.asn1.x509; 2 3 /** 4 * class for breaking up an X500 Name into it's component tokens, ala 5 * java.util.StringTokenizer. We need this class as some of the 6 * lightweight Java environment don't support classes like 7 * StringTokenizer. 8 * @deprecated use X500NameTokenizer 9 */ 10 public class X509NameTokenizer 11 { 12 private String value; 13 private int index; 14 private char separator; 15 private StringBuffer buf = new StringBuffer(); 16 17 public X509NameTokenizer( 18 String oid) 19 { 20 this(oid, ','); 21 } 22 23 public X509NameTokenizer( 24 String oid, 25 char separator) 26 { 27 this.value = oid; 28 this.index = -1; 29 this.separator = separator; 30 } 31 32 public boolean hasMoreTokens() 33 { 34 return (index != value.length()); 35 } 36 37 public String nextToken() 38 { 39 if (index == value.length()) 40 { 41 return null; 42 } 43 44 int end = index + 1; 45 boolean quoted = false; 46 boolean escaped = false; 47 48 buf.setLength(0); 49 50 while (end != value.length()) 51 { 52 char c = value.charAt(end); 53 54 if (c == '"') 55 { 56 if (!escaped) 57 { 58 quoted = !quoted; 59 } 60 buf.append(c); 61 escaped = false; 62 } 63 else 64 { 65 if (escaped || quoted) 66 { 67 buf.append(c); 68 escaped = false; 69 } 70 else if (c == '\\') 71 { 72 buf.append(c); 73 escaped = true; 74 } 75 else if (c == separator) 76 { 77 break; 78 } 79 else 80 { 81 // BEGIN Android-added: Unknown reason 82 // This was previously marked with the comment "copied from a newer version 83 // of BouncyCastle", but I couldn't find any evidence that it ever was included 84 // in any version of BC 85 if (c == '#' && buf.charAt(buf.length() - 1) == '=') 86 { 87 buf.append('\\'); 88 } 89 else if (c == '+' && separator != '+') 90 { 91 buf.append('\\'); 92 } 93 // END Android-added: Unknown reason 94 buf.append(c); 95 } 96 } 97 end++; 98 } 99 100 index = end; 101 102 return buf.toString(); 103 } 104 } 105
