valueparser.java

利用javame开发的

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// 
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// 
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// and may be changed substantially prior to final release. Nokia Corporation 
// retains the right to make changes to this source code at 
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// purposes only. 
// 
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// Corporation.
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// 
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package example.fruitmachine;


public class ValueParser
{
    private final String dataStr;
    private int currentIndex = 0;


    public ValueParser(String str)
    {
        dataStr = str;
    }


    public String getNextValue()
    {
        StringBuffer buf = new StringBuffer();
        String value = null;

        if (dataStr != null)
        {
            int dataStrLen = dataStr.length();
            while (currentIndex < dataStrLen)
            {
                char ch = dataStr.charAt(currentIndex);
                if (ch == '\\')
                {
                    currentIndex++;
                    ch = dataStr.charAt(currentIndex);
                    if ((ch == '\\') || (ch == '\n'))
                    {
                        buf.append(ch);
                    }
                    else
                    {
                        buf.append('?');
                    }
                }
                else if (ch == '\n')
                {
                    value = buf.toString();
                    currentIndex++;
                    break;
                }
                else
                {
                    buf.append(ch);
                }
                currentIndex++;
            }

            if ((value == null) && (buf.length() > 0))
            {
                // didn't find a newline before end of dataStr
                value = buf.toString();
            }
        }

        return value;
    }

    
    // This functionality was repeated a lot, so we moved it here
    public int getNextIntValue()
        throws NumberFormatException
    {
        String str = getNextValue();
        int value = Integer.parseInt(str);
        return value;
    }
}