//XlsToCmdReadVertically1.java: working but no merge cell detection implementation yet.
//XlsToCmdReadVertically2.java: CellRangeAddress[] made and initializes
//but still no merge cell detection implementation.
//XlsToCmdReadVertically3.java: section-wise reading of classes is done. working.
//fair implementation for lab detection.
//but doesnt read course name if there is a class for 1+ sections
//XlsToCmdReadVertically4.java: //now reads course name also.
//No implementation of str[3] (course, room, teacher) yet.
//XlsToCmdReadVertically5.java: //implementation of session[3] (course, room, teacher) done.
//printing values only from session[3] array
//XlsToCmdReadVertically6.java: //Split all the merge areas which done have any content
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.util.CellRangeAddress;
import java.util.Iterator;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.ss.util.CellReference;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import java.io.FileInputStream;
import java.io.InputStream;
class XlsToCmdReadVertically
{
public static void main(String[] args) throws NullPointerException, java.io.FileNotFoundException, java.io.IOException
{
if(args.length < 4)
{
System.out.println("Give command line arguments: xlsFileName Degree Year RowContaingSectionsName");
System.exit(0);
}
String degree = args[1];
short year = (short)Integer.parseInt(args[2]);
short RowContaingSectionsName = (short)Integer.parseInt(args[3]);
InputStream inp = new FileInputStream(args[0]);
HSSFWorkbook wb = new HSSFWorkbook(new POIFSFileSystem(inp));
//ExcelExtractor extractor = new ExcelExtractor(wb);
//extractor.setFormulasNotResults(true);
//extractor.setIncludeSheetNames(false);
//String text = extractor.getText();
HSSFSheet sheet = wb.getSheetAt(0);
noOfMR = sheet.getNumMergedRegions();
System.out.println("no of MR is "+ noOfMR);
for(int i=0; i<noOfMR; ++i)//initializes mergeRanges[] and split all the merge areas which dont have any content
{
CellRangeAddress MR = null;
MR = sheet.getMergedRegion(i);
if(MR == null)
continue;//System.out.println("MR is null");//
String str = null;
int rowMR = MR.getFirstRow();
int colMR = MR.getFirstColumn();
for(Row r_ : sheet)
{//read MR.getFirstColumn(), MR.getFirstRow()
if(r_.getRowNum() != rowMR)
continue;
for(Cell c_ : r_)
{
if(c_.getColumnIndex() != colMR)
continue;
switch(c_.getCellType())
{
case Cell.CELL_TYPE_STRING:
if(!((c_.getRichStringCellValue().getString()).equals("")))
str = c_.getRichStringCellValue().getString();//System.out.println(cellRef.formatAsString()+" "+cell.getRichStringCellValue().getString());//"Row: "+row.getRowNum()+" Cell: "+cell.getColumnIndex()+" "+cellRef.formatAsString()+" - <In String> "+cell.getRichStringCellValue().getString());
break;
case Cell.CELL_TYPE_NUMERIC:
/* if(DateUtil.isCellDateFormatted(cell))
if(!((cell.getDateCellValue()).equals("")))
System.out.println(cell.getDateCellValue());
else*/
if(!((((Double)(c_.getNumericCellValue())).toString()).equals("")))
str = Double.toString(c_.getNumericCellValue());
break;
/* case Cell.CELL_TYPE_BOOLEAN:
if(!(((String)(cell.getBooleanCellValue())).equals("")))
System.out.println(cell.getBooleanCellValue());
break;
case Cell.CELL_TYPE_FORMULA:
if(!((cell.getCellFormula()).equals("")))
System.out.println(cell.getCellFormula());
break;*/
default:
str = null;//System.out.println(" ");//("<In Default>");
}//switch
}//cell
}//row
if(str == null)//read MR.getFirstColumn(), MR.getFirstRow(), if contents == null, then remove merged region.
sheet.removeMergedRegion(i);
}
noOfMR = sheet.getNumMergedRegions();
mergeRange = new CellRangeAddress[noOfMR];
for(int i=0; i<noOfMR; ++i)//initializes mergeRanges[] and split all the merge areas which dont have any content
{
mergeRange[i] = sheet.getMergedRegion(i);
}
//Cells Traversal:
for(Iterator<Row> rit = sheet.rowIterator(); rit.hasNext();)
{
for(int coun =0; coun<3; coun++)
session[coun] = null;
int startingColIndexForRow1=-1;
CellRangeAddress currCellRange = null;
boolean classForSingleSection = false;//initialized by row1
boolean cellsFromRow2AreInGroupOf2WithEachOther = false;//initialized by row2//true means its a lab
Row row = rit.next();//Row 1
System.out.println(1+row.getRowNum()+"------------------------------");
if(row.getRowNum() < 6)
continue;//rows before that one containing list of section names need not to be traversed.
//System.out.println("myRorNo : "+row);
for(Cell cell : row)
{
if(cell.getColumnIndex() < 4)
continue;
else if((cell.getColumnIndex() > 5))
break;
if(cell.getColumnIndex() % 2 ==0)// == 4)
{
startingColIndexForRow1 = -1;
currCellRange = null;
currCellRange = findMergedRange(row.getRowNum(), cell.getColumnIndex());//check the mergedCellArea to which this cell belongs.
if(currCellRange != null)
{
if(currCellRange.getFirstColumn() == cell.getColumnIndex() &&
currCellRange.getLastColumn() == 1+cell.getColumnIndex())//check here if this class is for single section. If yes, set the variable to true
classForSingleSection = true;
else
startingColIndexForRow1 = currCellRange.getFirstColumn();
//System.out.println("classForSingleSection: "+classForSingleSection+"\nstartingColIndexForRow1: "+startingColIndexForRow1);
}
}
CellReference cellRef = new CellReference(row.getRowNum(), cell.getColumnIndex());
switch(cell.getCellType())
{
case Cell.CELL_TYPE_STRING:
if(!((cell.getRichStringCellValue().getString()).equals("")))
session[0] = cell.getRichStringCellValue().getString();//System.out.println(cellRef.formatAsString()+" "+cell.getRichStringCellValue().getString());//"Row: "+row.getRowNum()+" Cell: "+cell.getColumnIndex()+" "+cellRef.formatAsString()+" - <In String> "+cell.getRichStringCellValue().getString());
break;
default://check if this cell is merged? if yes, get course name
if(currCellRange != null//makes sure that the current cell is in merged region and not single
&& currCellRange.getNumberOfCells()>2//not just for a single section
&& currCellRange.getFirstColumn() != cell.getColumnIndex())//it is not the starting cell of the merged area
for(Row r_ : sheet){//read contents of cell(row.getRowNum(), currCellRange.getFirstColumn())
if(r_.getRowNum() != row.getRowNum()) continue;
for(Cell c_ : r_)
{
if(c_.getColumnIndex() != currCellRange.getFirstColumn()) continue;
if(!((c_.getRichStringCellValue().getString()).equals("")))
session[0] = c_.getRichStringCellValue().getString();//System.out.println(cellRef.formatAsString()+" "+c_.getRichStringCellValue().getString());
else
session[0] = null;//System.out.println("<Free Period>");//("<In Default>");
}
}
else
session[0] = null;//System.out.println("<Free Period>");//("<In Default>");
}//switch
break;
}//for cell
currCellRange = null;
row = rit.next();//Row 2
for(Cell cell : row)
{
if(cell.getColumnIndex() < 4)
continue;
else if((cell.getColumnIndex() > 5))
break;
//set variable cellsFromRow2AreInGroupOf2WithEachOther here.
if(cell.getColumnIndex()%2 == 0 /*== 4*/ && classForSingleSection == true)//only set if classForSingleSection is true
{
currCellRange = findMergedRange(row.getRowNum(), cell.getColumnIndex());//check the mergedCellArea to which this cell belongs.
if(currCellRange != null)
if(currCellRange.getFirstColumn() == cell.getColumnIndex() &&
currCellRange.getLastColumn() == 1+cell.getColumnIndex())
cellsFromRow2AreInGroupOf2WithEachOther = true;//check and initialize cellsFromRow2AreInGroupOf2WithEachOther
}
CellReference cellRef = new CellReference(row.getRowNum(), cell.getColumnIndex());
switch(cell.getCellType())
{
case Cell.CELL_TYPE_STRING:
if(!((cell.getRichStringCellValue().getString()).equals("")))
if(cell.getColumnIndex()%2 == 0)//System.out.println(cellRef.formatAsString()+" "+cell.getRichStringCellValue().getString());//"Row: "+row.getRowNum()+" Cell: "+cell.getColumnIndex()+" "+cellRef.formatAsString()+" - <In String> "+cell.getRichStringCellValue().getString());
{
session[1] = cell.getRichStringCellValue().getString();
if(session[1] != null)
break;
}
else
{
session[2] = cell.getRichStringCellValue().getString();
break;
}
default://comes here in case of lab or multi-section class
//System.out.println("default:");
//if(classForSingleSection == false && currCellRange != null)
//read from row.getRowNum(), startingColIndexForRow1
for(Row r_ : sheet)
{
if(r_.getRowNum() != row.getRowNum()) continue;
for(Cell c_ : r_)
{
if(c_.getColumnIndex() != startingColIndexForRow1) continue;
if(!((c_.getRichStringCellValue().getString()).equals("")))
if(cell.getColumnIndex()%2 == 0)//System.out.println(cellRef.formatAsString()+" "+cell.getRichStringCellValue().getString());
session[1] = c_.getRichStringCellValue().getString();
//else
//session[2] = c_.getRichStringCellValue().getString();
}
}
}//switch
}//for cell
if(!classForSingleSection)
{
if(session[0] != null)//if(!((session[0]+session[1]+session[2]).equals("")))
System.out.println("1."+session[0]+"\n2."+session[1]+"\n3."+session[2]);
continue;}
if(!cellsFromRow2AreInGroupOf2WithEachOther){
if(session[0] != null)//if(!((session[0]+session[1]+session[2]).equals("")))
System.out.println("1."+session[0]+"\n2."+session[1]+"\n3."+session[2]);
continue;//if cells from row 2 are not in group of 2 with each other then continue
//if the Row3 and Row4 code is run, it means there is a lab.
}
currCellRange = null;
row = rit.next();//Row3
for(Cell cell : row)
{
if(cell.getColumnIndex() <= 3)
continue;
else if((cell.getColumnIndex() >= 6))
break;
CellReference cellRef = new CellReference(row.getRowNum(), cell.getColumnIndex());
switch(cell.getCellType())
{
case Cell.CELL_TYPE_STRING:
if(!((cell.getRichStringCellValue().getString()).equals("")))
session[1] = session[1] + " " + cell.getRichStringCellValue().getString();//System.out.println(cellRef.formatAsString()+" "+cell.getRichStringCellValue().getString());//"Row: "+row.getRowNum()+" Cell: "+cell.getColumnIndex()+" "+cellRef.formatAsString()+" - <In String> "+cell.getRichStringCellValue().getString());
break;
//default:
//System.out.println(" ");//("<In Default>");
}//switch
break;
}//for cell
currCellRange = null;
row = rit.next();//Row4
for(Cell cell : row)
{
if(cell.getColumnIndex() <= 3)
continue;
else if((cell.getColumnIndex() >= 6))
break;
CellReference cellRef = new CellReference(row.getRowNum(), cell.getColumnIndex());
switch(cell.getCellType())
{
case Cell.CELL_TYPE_STRING:
if(!((cell.getRichStringCellValue().getString()).equals("")))
session[2] = cell.getRichStringCellValue().getString();//System.out.println(cellRef.formatAsString()+" "+cell.getRichStringCellValue().getString());//"Row: "+row.getRowNum()+" Cell: "+cell.getColumnIndex()+" "+cellRef.formatAsString()+" - <In String> "+cell.getRichStringCellValue().getString());
break;
//default:
//System.out.println(" ");//("<In Default>");
}//switch
break;
}//for cell
if(session[0] != null)//if(!((session[0]+session[1]+session[2]).equals("")))
System.out.println("1."+session[0]+"\n2."+session[1]+"\n3."+session[2]);
}//for row
}//main
static CellRangeAddress findMergedRange(int rowInd, int colInd)//check if rowInd,colInd isinany mergeRange
{
CellRangeAddress cellRange = null;
for(int i=0; i<noOfMR; ++i)
if(mergeRange[i].isInRange(rowInd, colInd))
return mergeRange[i];
return null;
}
static String[] session = new String[3];
static int noOfMR;
static CellRangeAddress[] mergeRange;
}//class