went ahead and synced up. We'll get this up to spec shortly.
git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@352442 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andrew C. Oliver
parent
982c73bb85
commit
7f3c088a68
@ -157,7 +157,7 @@ public class FormulaRecord
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int offset)
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{
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Stack stack = new Stack();
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int pos = 22 + offset;
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/*int pos = 22 + offset;
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while (pos < size)
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{
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@ -165,7 +165,7 @@ public class FormulaRecord
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pos += ptg.getSize();
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stack.push(ptg);
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}
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}*/
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return stack;
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}
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@ -72,6 +72,8 @@ public class AddPtg
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public final static int SIZE = 1;
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public final static byte sid = 0x03;
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private final static String ADD = "+";
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/** Creates new AddPtg */
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public AddPtg()
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@ -84,6 +86,10 @@ public class AddPtg
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// doesn't need anything
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}
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protected AddPtg(String formula, int offset) {
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}
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public void writeBytes(byte [] array, int offset)
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{
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array[ offset + 0 ] = sid;
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@ -109,6 +115,21 @@ public class AddPtg
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return "+";
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}
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public static boolean isNextStringToken(String formula, int pos) {
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boolean retval = false;
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while (pos < formula.length() && Character.isWhitespace(formula.charAt(pos))) {
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pos++;
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}
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if (pos < formula.length()) {
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if (formula.charAt(pos) == ADD.toCharArray()[0]) {
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retval = true;
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}
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}
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return retval;
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}
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public String toFormulaString(Ptg [] operands)
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{
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StringBuffer buffer = new StringBuffer();
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@ -118,4 +139,12 @@ public class AddPtg
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buffer.append(operands[ 1 ].toFormulaString());
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return buffer.toString();
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}
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public int getPrecedence() {
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return 5;
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}
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public int getStringLength() {
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return 1;
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}
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}
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@ -75,6 +75,8 @@ public class IntPtg
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public final static byte sid = 0x1e;
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private short field_1_value;
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private String val;
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private int strlen = 0;
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/** Creates new IntPtg */
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public IntPtg()
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@ -86,6 +88,14 @@ public class IntPtg
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setValue(LittleEndian.getShort(data, offset + 1));
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}
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protected IntPtg(String formula, int offset) {
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val = parseString(formula, offset);
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if (val == null) throw new RuntimeException("WHOOAA there...thats got no int!");
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strlen=val.length();
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field_1_value = Short.parseShort(val);
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}
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public void setValue(short value)
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{
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field_1_value = value;
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@ -111,4 +121,45 @@ public class IntPtg
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{
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return "" + getValue();
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}
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private static String parseString(String formula, int pos) {
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String retval = null;
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while (pos < formula.length() && Character.isWhitespace(formula.charAt(pos))) {
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pos++;
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}
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if (pos < formula.length()) {
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if (Character.isDigit(formula.charAt(pos)) ) {
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int numpos = pos;
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while (numpos < formula.length() && Character.isDigit(formula.charAt(numpos))){
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numpos++;
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}
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if (numpos == formula.length() || formula.charAt(numpos) != '.') {
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String numberstr = formula.substring(pos,numpos);
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try {
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int number = Short.parseShort(numberstr);
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retval = numberstr;
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} catch (NumberFormatException e) {
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retval = null;
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}
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}
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}
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}
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return retval;
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}
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public static boolean isNextStringToken(String formula, int pos) {
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return (parseString(formula,pos) != null);
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}
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public int getPrecedence() {
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return 5;
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}
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public int getStringLength() {
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return strlen;
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}
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}
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@ -60,6 +60,9 @@
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*/
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package org.apache.poi.hssf.record.formula;
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import java.util.List;
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import java.util.ArrayList;
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/**
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*
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* @author andy
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@ -74,7 +77,73 @@ public abstract class Ptg
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{
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}
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public static Ptg createPtg(byte [] data, int offset)
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public static Ptg[] parse(String formula, int offset) {
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List ptgs = new ArrayList();
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while (offset < formula.length()) {
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Ptg ptg = getNextToken(formula,offset);
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offset += ptg.getStringLength();
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ptgs.add(ptg);
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}
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Ptg[] retval = new Ptg[ptgs.size()];
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retval = (Ptg[])ptgs.toArray(retval);
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return retval;
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}
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public static String ptgsToString(Ptg[] ptgs) {
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StringBuffer res = new StringBuffer();
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for (int k =0; k < ptgs.length; k++) {
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Ptg ptg = ptgs[k];
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res.append(ptg.toFormulaString());
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}
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return res.toString();
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}
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public static Ptg getNextToken(String formula, int offset) {
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//later use array of reflected methods like RecordFactory
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Ptg retval = null;
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if (AddPtg.isNextStringToken(formula,offset)) {
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retval = new AddPtg(formula,offset);
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} else if (IntPtg.isNextStringToken(formula,offset)) {
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retval = new IntPtg(formula,offset);
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} else {
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throw new RuntimeException("didn't parse "+formula+" at " +offset);
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}
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return retval;
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}
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/* private static List ptgsToList(Class [] ptgs)
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{
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List result = new ArrayList();
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Constructor constructor;
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for (int i = 0; i < ptgs.length; i++)
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{
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Class ptg = null;
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ptg = ptgs[ i ];
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try
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{
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constructor = ptg.getConstructor(new Class[]
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{
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byte [].class, int.class
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});
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}
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catch (Exception illegalArgumentException)
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{
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throw new RuntimeException(
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"Now that didn't work nicely at all (couldn't do that there list of ptgs)");
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}
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result.add(constructor);
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}
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return result;
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}*/
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/*public static Ptg createPtg(byte [] data, int offset)
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{
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byte id = data[ offset + 0 ];
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Ptg retval = null;
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@ -148,7 +217,7 @@ public abstract class Ptg
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+ " (" + ( int ) id + ")");
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}
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return retval;
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}
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}*/
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public abstract int getSize();
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@ -164,4 +233,26 @@ public abstract class Ptg
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public abstract void writeBytes(byte [] array, int offset);
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public abstract String toFormulaString();
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/**
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* Ptg's should override this
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*/
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// public boolean isNextStringToken(String formula, int pos) {
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// return false;
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// }
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public int getPrecedence() {
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return 100;
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}
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public int getStringLength() {
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return 0;
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}
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public static void main(String[] args) {
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if (args != null && args[0] != null) {
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System.out.println("Parsed Formula="+ ptgsToString(parse(args[0],0)));
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}
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}
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}
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