[VELTOOLS-109] A PrinftTool comes in handy. I've one I wish to donate

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.4, 2.0
• Fix Version/s: 2.0
• Component/s: GenericTools
• Environment: JDK 1.5, 6
• Assignee: Unassigned
• Reporter: Ezra Epstein
• Created: 21/Nov/08 00:35
• Updated: 07/Jan/18 19:06
• Resolved: 21/Nov/08 06:08

Description

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.List;

public class PrintfTool extends org.apache.velocity.tools.generic.LocaleConfig {

StringWriter output;
PrintWriter printer;

public PrintfTool()

{ output = new StringWriter(); printer = new PrintWriter(output); }

// Velocity doesn't support invoking with varargs
private String printf(String format, Object... args)

{ printer.printf(format, args); printer.flush(); output.flush(); String result = output.toString(); output.getBuffer().setLength(0); return result; }

// Velocity does support invoking with a List of values.
public String printf(String format, List args)

{ return printf(format, args.toArray()); }

// Since value convenience method
public String printf(String format, Object arg) {
return printf(format, new Object[]

{ arg }

);
}

}