FileDocCategorySizeDatePackage
FieldIterator.javaAPI DocApache Poi 3.0.16323Mon Jan 01 18:55:34 GMT 2007org.apache.poi.generator

FieldIterator

public class FieldIterator extends Object

For iterating through our fields.

author
Glen Stampoultzis (glens at apache.org)

Fields Summary
protected int
offset
Constructors Summary
public FieldIterator()
Methods Summary
public java.lang.StringcalcSize(int fieldNumber, java.lang.String fieldName, java.lang.String size, java.lang.String type)

        String result = " + ";
        if (type.startsWith("custom:"))
        {
            String javaFieldName = RecordUtil.getFieldName(fieldNumber, fieldName, 0);
            return result + javaFieldName + ".getSize()";
        }
        else if ("var".equals(size))
        {
            String javaFieldName = RecordUtil.getFieldName(fieldNumber,fieldName,0);
            return result + " ("+javaFieldName + ".length() *2)";
        }
        else if ("varword".equals(size))
        {
            String javaFieldName = RecordUtil.getFieldName(fieldNumber,fieldName,0);
            return result + javaFieldName + ".length * 2 + 2";
        } else
        {
            return result + size;
        }
public java.lang.StringfillDecoder(java.lang.String size, java.lang.String type)
This utility function returns a fill method entry for a given field

param
size - how big of an "int" or the name of the size field for a string
param
type - int or string

        String javaType = RecordUtil.getType(size, type, 0);

        String result = "";
        if (javaType.equals("short"))
            result = "LittleEndian.getShort(data, pos + 0x" + Integer.toHexString(offset) + " + offset)";
        else if (javaType.equals("short[]"))
            result = "LittleEndian.getShortArray(data, pos + 0x" + Integer.toHexString(offset) + " + offset)";
        else if (javaType.equals("int"))
            result = "LittleEndian.getInt(data, pos + 0x" + Integer.toHexString(offset) + " + offset)";
        else if (javaType.equals("byte"))
            result = "data[ pos + 0x" + Integer.toHexString(offset) + " + offset ]";
        else if (javaType.equals("double"))
            result = "LittleEndian.getDouble(data, pos + 0x" + Integer.toHexString(offset) + " + offset)";
        else if (javaType.equals("String") && !type.equals("hbstring"))
            result = "StringUtil.getFromUnicode(data, pos + 0x" + Integer.toHexString(offset) + " + offset,("+ size + "-1)/2)";
        else if (javaType.equals("String") && type.equals("hbstring"))
            result = "StringUtil.getFromUnicodeHigh(data, pos + 0x" + Integer.toHexString(offset) + " + offset, ("+ size+"/2))";

        try
        {
            offset += Integer.parseInt(size);
        }
        catch (NumberFormatException ignore)
        {
        }
        return result;
public java.lang.StringfillDecoder2(int position, java.lang.String name, java.lang.String size, java.lang.String type)

        if (type.startsWith("custom:"))
        {
            StringBuffer result = new StringBuffer();
            result.append( RecordUtil.getFieldName( position, name, 0 ) );
            result.append( " = new " );
            String javaType = type.substring( 7 );
            result.append(javaType);
            result.append( "();\n");
            result.append( "        pos += " );
            result.append(RecordUtil.getFieldName(position, name, 0))
                    .append(".fillField(data,size,pos + offset + ")
                    .append(offset)
                    .append(")");
            return result.toString();
        }
        else
        {
            return RecordUtil.getFieldName(position, name, 30) +
                    " = " + fillDecoder(size, type);
        }
public java.lang.StringserialiseEncoder(int fieldNumber, java.lang.String fieldName, java.lang.String size, java.lang.String type)

        String javaType = RecordUtil.getType(size, type, 0);
        String javaFieldName = RecordUtil.getFieldName(fieldNumber,fieldName,0);

        String result = "";
        if (type.startsWith("custom:"))
            result = "pos += " + javaFieldName + ".serializeField( pos + " + (offset+4) + " + offset, data );";
        else if (javaType.equals("short"))
            result = "LittleEndian.putShort(data, " + (offset+4) + " + offset + pos, " + javaFieldName + ");";
        else if (javaType.equals("short[]"))
            result = "LittleEndian.putShortArray(data, " + (offset+4) + " + offset + pos, " + javaFieldName + ");";
        else if (javaType.equals("int"))
            result = "LittleEndian.putInt(data, " + (offset+4) + " + offset + pos, " + javaFieldName + ");";
        else if (javaType.equals("byte"))
            result = "data[ " + (offset+4) + " + offset + pos ] = " + javaFieldName + ";";
        else if (javaType.equals("double"))
            result = "LittleEndian.putDouble(data, " + (offset+4) + " + offset + pos, " + javaFieldName + ");";
        else if (javaType.equals("String") && !type.equals("hbstring"))
            result = "StringUtil.putUncompressedUnicode("+ javaFieldName +", data, offset + pos + 4);";
        else if (javaType.equals("String") && type.equals("hbstring"))
            result = "StringUtil.putUncompressedUnicodeHigh("+ javaFieldName +", data, "+(offset+4)+" + offset + pos);";


        try
        {
            offset += Integer.parseInt(size);
        }
        catch (NumberFormatException ignore)
        {
        }
        return result;