package org.bouncycastle.asn1.x500.style;

class for breaking up an X500 Name into it's component tokens, ala java.util.StringTokenizer. We need this class as some of the lightweight Java environment don't support classes like StringTokenizer.
/** * class for breaking up an X500 Name into it's component tokens, ala * java.util.StringTokenizer. We need this class as some of the * lightweight Java environment don't support classes like * StringTokenizer. */
class X500NameTokenizer { private String value; private int index; private char seperator; private StringBuffer buf = new StringBuffer(); public X500NameTokenizer( String oid) { this(oid, ','); } public X500NameTokenizer( String oid, char seperator) { this.value = oid; this.index = -1; this.seperator = seperator; } public boolean hasMoreTokens() { return (index != value.length()); } public String nextToken() { if (index == value.length()) { return null; } int end = index + 1; boolean quoted = false; boolean escaped = false; buf.setLength(0); while (end != value.length()) { char c = value.charAt(end); if (c == '"') { if (!escaped) { quoted = !quoted; } else { buf.append(c); } escaped = false; } else { if (escaped || quoted) { if (c == '#' && buf.charAt(buf.length() - 1) == '=') { buf.append('\\'); } else if (c == '+' && seperator != '+') { buf.append('\\'); } buf.append(c); escaped = false; } else if (c == '\\') { escaped = true; } else if (c == seperator) { break; } else { buf.append(c); } } end++; } index = end; return buf.toString().trim(); } }