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6914 dpurdie 1 
package com.erggroup.buildtool.utilities;
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import java.util.Iterator;
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/**
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 *
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 * Class to simplify the appending of text to a string
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 * Will append text with a configurable 'joiner'
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 *
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 * The 'joiner' will only be used between strings. Not before the first or after the last
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 * The 'joiner' may be changed on the fly
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 *
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 * The append and join methods may be chained
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 *
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 *
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 */
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public class StringAppender {
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    String joiner;
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    StringBuilder text = new StringBuilder();
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    boolean skip = true;
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    public StringAppender(String joiner)
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    {
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        setJoin(joiner);
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    }
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    public StringAppender setJoin(String joiner)
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    {
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        this.joiner = joiner;
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        return this;
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    }
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    public StringAppender append(String text)
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    {
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        if ( !skip ) {
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            this.text.append(joiner);
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        }
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        skip = false;
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        this.text.append(text);
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        return this;
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    }
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    /**
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     * Append a Set/List of strings (Sort of like a join)
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     * @param itr - to iterate over the collection of strings
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     * @return
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     */
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    public StringAppender append(Iterator<String> itr)
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    {
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        while(itr.hasNext()){
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            append(itr.next());
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          }
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        return this;
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    }
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    public String toString()
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    {
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        return text.toString();
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    }
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    public StringBuilder getStringBuilder()
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    {
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        return text;
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    }
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    public int length() {
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        return text.length();
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    }
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}