Test checkin of some modules

file/StringSplitter.java

@@ -0,0 +1,103 @@
+import java.util.Vector;
+
+// StringSplitter
+// A stringsplitter object splits a string into a number of substrings,
+// each separated by one separator character. Separator characters can be
+// included in the string by escaping them with a \
+public class StringSplitter
+{
+	Vector parts = new Vector();
+	int pos = 0;
+
+	StringSplitter(String str, char sep)
+	{
+	this(str, sep, true);
+	}
+
+	StringSplitter(String str, char sep, boolean escape)
+	{
+	StringBuffer current;
+
+	parts.addElement(current = new StringBuffer());
+	for(int i=0; i<str.length(); i++) {
+		char c = str.charAt(i);
+		if (c == '\\' && i != str.length()-1 && escape)
+			current.append(str.charAt(++i));
+		else if (c == sep)
+			parts.addElement(current = new StringBuffer());
+		else
+			current.append(c);
+		}
+	}
+
+	// countTokens
+	// The number of tokens left in the string
+	int countTokens()
+	{
+	return parts.size() - pos;
+	}
+
+	// hasMoreTokens
+	// Can we call nextToken?
+	boolean hasMoreTokens()
+	{
+	return pos < parts.size();
+	}
+
+	// nextToken
+	// Returns the string value of the next token
+	String nextToken()
+	{
+	if (pos < parts.size())
+		return ((StringBuffer)parts.elementAt(pos++)).toString();
+	else
+		return null;
+	}
+
+	// gettokens
+	// Returns a vector of strings split from the given input string
+	Vector gettokens()
+	{
+	return parts;
+	}
+}
+
+
+// StringJoiner
+// The complement of StringSplitter. Takes a number of substrings and adds
+// them to a string, separated by some character. If the separator character
+// appears in one of the substrings, escape it with a \
+class StringJoiner
+{
+	char sep;
+	StringBuffer str = new StringBuffer();
+	int count = 0;
+
+	// Create a new StringJoiner using the given separator
+	StringJoiner(char s)
+	{
+	sep = s;
+	}
+
+	// add
+	// Add one string, and a separator
+	void add(String s)
+	{
+	if (count != 0)
+		str.append(sep);
+	for(int i=0; i<s.length(); i++) {
+		char c = s.charAt(i);
+		if (c == sep || c == '\\') str.append('\\');
+		str.append(c);
+		}
+	count++;
+	}
+
+	// toString
+	// Get the resulting string
+	public String toString()
+	{
+	return str.toString();
+	}
+}
+