Fix inconsistent whitespace
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1613174 13f79535-47bb-0310-9956-ffa450edef68
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@ -163,122 +163,121 @@ public class HSSFOptimiser {
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}
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}
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}
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}
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/**
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/**
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* Goes through the Wokrbook, optimising the cell styles
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* Goes through the Wokrbook, optimising the cell styles
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* by removing duplicate ones, and ones that aren't used.
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* by removing duplicate ones, and ones that aren't used.
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* For best results, optimise the fonts via a call to
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* For best results, optimise the fonts via a call to
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* {@link #optimiseFonts(HSSFWorkbook)} first.
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* {@link #optimiseFonts(HSSFWorkbook)} first.
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* @param workbook The workbook in which to optimise the cell styles
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* @param workbook The workbook in which to optimise the cell styles
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*/
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*/
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public static void optimiseCellStyles(HSSFWorkbook workbook) {
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public static void optimiseCellStyles(HSSFWorkbook workbook) {
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// Where each style has ended up, and if we need to
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// Where each style has ended up, and if we need to
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// delete the record for it. Start off with no change
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// delete the record for it. Start off with no change
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short[] newPos =
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short[] newPos = new short[workbook.getWorkbook().getNumExFormats()];
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new short[workbook.getWorkbook().getNumExFormats()];
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boolean[] isUsed = new boolean[newPos.length];
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boolean[] isUsed = new boolean[newPos.length];
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boolean[] zapRecords = new boolean[newPos.length];
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boolean[] zapRecords = new boolean[newPos.length];
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for(int i=0; i<newPos.length; i++) {
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for(int i=0; i<newPos.length; i++) {
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isUsed[i] = false;
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isUsed[i] = false;
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newPos[i] = (short)i;
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newPos[i] = (short)i;
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zapRecords[i] = false;
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zapRecords[i] = false;
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}
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}
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// Get each style record, so we can do deletes
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// Get each style record, so we can do deletes
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// without getting confused
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// without getting confused
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ExtendedFormatRecord[] xfrs = new ExtendedFormatRecord[newPos.length];
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ExtendedFormatRecord[] xfrs = new ExtendedFormatRecord[newPos.length];
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for(int i=0; i<newPos.length; i++) {
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for(int i=0; i<newPos.length; i++) {
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xfrs[i] = workbook.getWorkbook().getExFormatAt(i);
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xfrs[i] = workbook.getWorkbook().getExFormatAt(i);
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}
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}
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// Loop over each style, seeing if it is the same
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// Loop over each style, seeing if it is the same
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// as an earlier one. If it is, point users of the
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// as an earlier one. If it is, point users of the
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// later duplicate copy to the earlier one, and
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// later duplicate copy to the earlier one, and
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// mark the later one as needing deleting
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// mark the later one as needing deleting
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// Only work on user added ones, which come after 20
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// Only work on user added ones, which come after 20
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for(int i=21; i<newPos.length; i++) {
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for(int i=21; i<newPos.length; i++) {
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// Check this one for being a duplicate
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// Check this one for being a duplicate
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// of an earlier one
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// of an earlier one
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int earlierDuplicate = -1;
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int earlierDuplicate = -1;
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for(int j=0; j<i && earlierDuplicate == -1; j++) {
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for(int j=0; j<i && earlierDuplicate == -1; j++) {
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ExtendedFormatRecord xfCheck = workbook.getWorkbook().getExFormatAt(j);
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ExtendedFormatRecord xfCheck = workbook.getWorkbook().getExFormatAt(j);
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if(xfCheck.equals(xfrs[i])) {
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if(xfCheck.equals(xfrs[i])) {
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earlierDuplicate = j;
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earlierDuplicate = j;
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}
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}
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}
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}
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// If we got a duplicate, mark it as such
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// If we got a duplicate, mark it as such
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if(earlierDuplicate != -1) {
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if(earlierDuplicate != -1) {
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newPos[i] = (short)earlierDuplicate;
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newPos[i] = (short)earlierDuplicate;
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zapRecords[i] = true;
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zapRecords[i] = true;
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}
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}
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}
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}
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// Loop over all the cells in the file, and identify any user defined
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// Loop over all the cells in the file, and identify any user defined
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// styles aren't actually being used (don't touch built-in ones)
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// styles aren't actually being used (don't touch built-in ones)
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for(int sheetNum=0; sheetNum<workbook.getNumberOfSheets(); sheetNum++) {
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for(int sheetNum=0; sheetNum<workbook.getNumberOfSheets(); sheetNum++) {
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HSSFSheet s = workbook.getSheetAt(sheetNum);
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HSSFSheet s = workbook.getSheetAt(sheetNum);
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for (Row row : s) {
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for (Row row : s) {
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for (Cell cellI : row) {
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for (Cell cellI : row) {
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HSSFCell cell = (HSSFCell)cellI;
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HSSFCell cell = (HSSFCell)cellI;
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short oldXf = cell.getCellValueRecord().getXFIndex();
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short oldXf = cell.getCellValueRecord().getXFIndex();
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isUsed[oldXf] = true;
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isUsed[oldXf] = true;
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}
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}
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}
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}
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}
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}
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// Mark any that aren't used as needing zapping
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// Mark any that aren't used as needing zapping
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for (int i=21; i<isUsed.length; i++) {
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for (int i=21; i<isUsed.length; i++) {
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if (! isUsed[i]) {
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if (! isUsed[i]) {
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// Un-used style, can be removed
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// Un-used style, can be removed
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zapRecords[i] = true;
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zapRecords[i] = true;
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newPos[i] = 0;
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newPos[i] = 0;
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}
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}
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}
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}
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// Update the new positions based on
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// Update the new positions based on
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// deletes that have occurred between
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// deletes that have occurred between
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// the start and them
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// the start and them
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// Only work on user added ones, which come after 20
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// Only work on user added ones, which come after 20
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for(int i=21; i<newPos.length; i++) {
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for(int i=21; i<newPos.length; i++) {
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// Find the number deleted to that
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// Find the number deleted to that
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// point, and adjust
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// point, and adjust
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short preDeletePos = newPos[i];
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short preDeletePos = newPos[i];
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short newPosition = preDeletePos;
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short newPosition = preDeletePos;
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for(int j=0; j<preDeletePos; j++) {
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for(int j=0; j<preDeletePos; j++) {
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if(zapRecords[j]) newPosition--;
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if(zapRecords[j]) newPosition--;
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}
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}
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// Update the new position
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// Update the new position
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newPos[i] = newPosition;
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newPos[i] = newPosition;
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}
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}
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// Zap the un-needed user style records
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// Zap the un-needed user style records
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// removing by index, because removing by object may delete
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// removing by index, because removing by object may delete
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// styles we did not intend to (the ones that _were_ duplicated and not the duplicates)
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// styles we did not intend to (the ones that _were_ duplicated and not the duplicates)
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int max = newPos.length;
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int max = newPos.length;
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int removed = 0; // to adjust index after deletion
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int removed = 0; // to adjust index after deletion
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for(int i=21; i<max; i++) {
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for(int i=21; i<max; i++) {
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if(zapRecords[i + removed]) {
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if(zapRecords[i + removed]) {
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workbook.getWorkbook().removeExFormatRecord(i);
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workbook.getWorkbook().removeExFormatRecord(i);
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i--;
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i--;
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max--;
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max--;
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removed++;
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removed++;
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}
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}
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}
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}
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// Finally, update the cells to point at their new extended format records
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// Finally, update the cells to point at their new extended format records
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for(int sheetNum=0; sheetNum<workbook.getNumberOfSheets(); sheetNum++) {
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for(int sheetNum=0; sheetNum<workbook.getNumberOfSheets(); sheetNum++) {
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HSSFSheet s = workbook.getSheetAt(sheetNum);
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HSSFSheet s = workbook.getSheetAt(sheetNum);
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for (Row row : s) {
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for (Row row : s) {
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for (Cell cellI : row) {
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for (Cell cellI : row) {
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HSSFCell cell = (HSSFCell)cellI;
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HSSFCell cell = (HSSFCell)cellI;
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short oldXf = cell.getCellValueRecord().getXFIndex();
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short oldXf = cell.getCellValueRecord().getXFIndex();
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HSSFCellStyle newStyle = workbook.getCellStyleAt(
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HSSFCellStyle newStyle = workbook.getCellStyleAt(
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newPos[oldXf]
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newPos[oldXf]
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);
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);
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cell.setCellStyle(newStyle);
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cell.setCellStyle(newStyle);
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}
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}
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}
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}
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}
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}
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}
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}
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}
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}
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