/// <summary> /// Determines whether the specified <see cref="T:System.Object"/> is equal to the current <see cref="T:System.Object"/>. /// </summary> /// <param name="obj">The <see cref="T:System.Object"/> to compare with the current <see cref="T:System.Object"/>.</param> /// <returns> /// true if the specified <see cref="T:System.Object"/> is equal to the current <see cref="T:System.Object"/>; otherwise, false. /// </returns> /// <exception cref="T:System.NullReferenceException"> /// The <paramref name="obj"/> parameter is null. /// </exception> public override bool Equals(Object obj) { if (this == obj) { return(true); } if (obj == null) { return(false); } if (obj is HSSFCellStyle) { HSSFCellStyle other = (HSSFCellStyle)obj; if (_format == null) { if (other._format != null) { return(false); } } else if (!_format.Equals(other._format)) { return(false); } if (index != other.index) { return(false); } return(true); } return(false); }
/// <summary> /// Goes through the Wokrbook, optimising the cell styles /// by removing duplicate ones. /// For best results, optimise the fonts via a call to /// OptimiseFonts(HSSFWorkbook) first /// </summary> /// <param name="workbook">The workbook in which to optimise the cell styles</param> public static void OptimiseCellStyles(HSSFWorkbook workbook) { // Where each style has ended up, and if we need to // delete the record for it. Start off with no change short[] newPos = new short[workbook.Workbook.NumExFormats]; bool[] zapRecords = new bool[newPos.Length]; for (int i = 0; i < newPos.Length; i++) { newPos[i] = (short)i; zapRecords[i] = false; } // Get each style record, so we can do deletes // without Getting confused ExtendedFormatRecord[] xfrs = new ExtendedFormatRecord[newPos.Length]; for (int i = 0; i < newPos.Length; i++) { xfrs[i] = workbook.Workbook.GetExFormatAt(i); } // Loop over each style, seeing if it is the same // as an earlier one. If it is, point users of the // later duplicate copy to the earlier one, and // mark the later one as needing deleting // Only work on user added ones, which come after 20 for (int i = 21; i < newPos.Length; i++) { // Check this one for being a duplicate // of an earlier one int earlierDuplicate = -1; for (int j = 0; j < i && earlierDuplicate == -1; j++) { ExtendedFormatRecord xfCheck = workbook.Workbook.GetExFormatAt(j); if (xfCheck.Equals(xfrs[i])) { earlierDuplicate = j; } } // If we got a duplicate, mark it as such if (earlierDuplicate != -1) { newPos[i] = (short)earlierDuplicate; zapRecords[i] = true; } } // Update the new positions based on // deletes that have occurred between // the start and them // Only work on user added ones, which come after 20 for (int i = 21; i < newPos.Length; i++) { // Find the number deleted to that // point, and adjust short preDeletePos = newPos[i]; short newPosition = preDeletePos; for (int j = 0; j < preDeletePos; j++) { if (zapRecords[j]) { newPosition--; } } // Update the new position newPos[i] = newPosition; } // Zap the un-needed user style records for (int i = 21; i < newPos.Length; i++) { if (zapRecords[i]) { workbook.Workbook.RemoveExFormatRecord( xfrs[i] ); } } // Finally, update the cells to point at // their new extended format records for (int sheetNum = 0; sheetNum < workbook.NumberOfSheets; sheetNum++) { HSSFSheet s = (HSSFSheet)workbook.GetSheetAt(sheetNum); IEnumerator rIt = s.GetRowEnumerator(); while (rIt.MoveNext()) { HSSFRow row = (HSSFRow)rIt.Current; IEnumerator cIt = row.GetEnumerator(); while (cIt.MoveNext()) { ICell cell = (HSSFCell)cIt.Current; short oldXf = ((HSSFCell)cell).CellValueRecord.XFIndex; NPOI.SS.UserModel.ICellStyle newStyle = workbook.GetCellStyleAt( newPos[oldXf] ); cell.CellStyle = (newStyle); } } } }
/// <summary> /// Goes through the Wokrbook, optimising the cell styles /// by removing duplicate ones and ones that aren't used. /// For best results, optimise the fonts via a call to /// OptimiseFonts(HSSFWorkbook) first /// </summary> /// <param name="workbook">The workbook in which to optimise the cell styles</param> public static void OptimiseCellStyles(HSSFWorkbook workbook) { // Where each style has ended up, and if we need to // delete the record for it. Start off with no change short[] newPos = new short[workbook.Workbook.NumExFormats]; bool[] isUsed = new bool[newPos.Length]; bool[] zapRecords = new bool[newPos.Length]; for (int i = 0; i < newPos.Length; i++) { isUsed[i] = false; newPos[i] = (short)i; zapRecords[i] = false; } // Get each style record, so we can do deletes // without Getting confused ExtendedFormatRecord[] xfrs = new ExtendedFormatRecord[newPos.Length]; for (int i = 0; i < newPos.Length; i++) { xfrs[i] = workbook.Workbook.GetExFormatAt(i); } // Loop over each style, seeing if it is the same // as an earlier one. If it is, point users of the // later duplicate copy to the earlier one, and // mark the later one as needing deleting // Only work on user added ones, which come after 20 for (int i = 21; i < newPos.Length; i++) { // Check this one for being a duplicate // of an earlier one int earlierDuplicate = -1; for (int j = 0; j < i && earlierDuplicate == -1; j++) { ExtendedFormatRecord xfCheck = workbook.Workbook.GetExFormatAt(j); if (xfCheck.Equals(xfrs[i])) { earlierDuplicate = j; } } // If we got a duplicate, mark it as such if (earlierDuplicate != -1) { newPos[i] = (short)earlierDuplicate; zapRecords[i] = true; } // If we got a duplicate, mark the one we're keeping as used if (earlierDuplicate != -1) { isUsed[earlierDuplicate] = true; } } // Loop over all the cells in the file, and identify any user defined // styles aren't actually being used (don't touch built-in ones) for (int sheetNum = 0; sheetNum < workbook.NumberOfSheets; sheetNum++) { HSSFSheet s = (HSSFSheet)workbook.GetSheetAt(sheetNum); foreach (IRow row in s) { foreach (ICell cellI in row) { HSSFCell cell = (HSSFCell)cellI; short oldXf = cell.CellValueRecord.XFIndex; isUsed[oldXf] = true; } } } // Mark any that aren't used as needing zapping for (int i = 21; i < isUsed.Length; i++) { if (!isUsed[i]) { // Un-used style, can be removed zapRecords[i] = true; newPos[i] = 0; } } // Update the new positions based on // deletes that have occurred between // the start and them // Only work on user added ones, which come after 20 for (int i = 21; i < newPos.Length; i++) { // Find the number deleted to that // point, and adjust short preDeletePos = newPos[i]; short newPosition = preDeletePos; for (int j = 0; j < preDeletePos; j++) { if (zapRecords[j]) { newPosition--; } } // Update the new position newPos[i] = newPosition; } // Zap the un-needed user style records // removing by index, because removing by object may delete // styles we did not intend to (the ones that _were_ duplicated and not the duplicates) int max = newPos.Length; int removed = 0; // to adjust index after deletion for (int i = 21; i < max; i++) { if (zapRecords[i + removed]) { workbook.Workbook.RemoveExFormatRecord(i); i--; max--; removed++; } } // Finally, update the cells to point at their new extended format records for (int sheetNum = 0; sheetNum < workbook.NumberOfSheets; sheetNum++) { HSSFSheet s = (HSSFSheet)workbook.GetSheetAt(sheetNum); //IEnumerator rIt = s.GetRowEnumerator(); //while (rIt.MoveNext()) foreach (IRow row in s) { //HSSFRow row = (HSSFRow)rIt.Current; //IEnumerator cIt = row.GetEnumerator(); //while (cIt.MoveNext()) foreach (ICell cell in row) { //ICell cell = (HSSFCell)cIt.Current; short oldXf = ((HSSFCell)cell).CellValueRecord.XFIndex; Npoi.Core.SS.UserModel.ICellStyle newStyle = workbook.GetCellStyleAt( newPos[oldXf] ); cell.CellStyle = (newStyle); } } } }