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Back port fixes from the ooxml branch for CellReference column number<->letter stuff

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@675717 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2008-07-10 20:30:46 +00:00
parent 81f9610e04
commit fa00b16511
2 changed files with 198 additions and 28 deletions
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81
src/java/org/apache/poi/hssf/util/CellReference.java
View File

@ -92,6 +92,13 @@ public final class CellReference {
_rowIndex = Integer.parseInt(rowRef)-1; // -1 to convert 1-based to zero-based
}
public CellReference(int pRow, int pCol) {
this(pRow, pCol, false, false);
}
public CellReference(int pRow, short pCol) {
this(pRow, (int)pCol, false, false);
}
public CellReference(int pRow, int pCol, boolean pAbsRow, boolean pAbsCol) {
this(null, pRow, pCol, pAbsRow, pAbsCol);
}
@ -128,20 +135,19 @@ public final class CellReference {
* ALPHA-26 number format to 0-based base 10.
*/
private int convertColStringToNum(String ref) {
int lastIx = ref.length()-1;
int retval=0;
int pos = 0;
for (int k = lastIx; k > -1; k--) {
char thechar = ref.charAt(k);
if ( pos == 0) {
retval += (Character.getNumericValue(thechar)-9);
} else {
retval += (Character.getNumericValue(thechar)-9) * (pos * 26);
}
pos++;
}
return retval-1;
int lastIx = ref.length()-1;
int retval=0;
int pos = 0;
for (int k = lastIx; k > -1; k--) {
char thechar = ref.charAt(k);
// Character.getNumericValue() returns the values
// 10-35 for the letter A-Z
int shift = (int)Math.pow(26, pos);
retval += (Character.getNumericValue(thechar)-9) * shift;
pos++;
}
return retval-1;
}
/**
@ -349,19 +355,24 @@ public final class CellReference {
* eg column #3 -> D
*/
protected static String convertNumToColString(int col) {
String retval = null;
int mod = col % 26;
int div = col / 26;
char small=(char)(mod + 65);
char big = (char)(div + 64);
if (div == 0) {
retval = ""+small;
} else {
retval = ""+big+""+small;
}
return retval;
// Excel counts column A as the 1st column, we
// treat it as the 0th one
int excelColNum = col + 1;
String colRef = "";
int colRemain = excelColNum;
while(colRemain > 0) {
int thisPart = colRemain % 26;
if(thisPart == 0) { thisPart = 26; }
colRemain = (colRemain - thisPart) / 26;
// The letter A is at 65
char colChar = (char)(thisPart+64);
colRef = colChar + colRef;
}
return colRef;
}
/**
@ -392,6 +403,22 @@ public final class CellReference {
return sb.toString();
}
/**
* Returns the three parts of the cell reference, the
* Sheet name (or null if none supplied), the 1 based
* row number, and the A based column letter.
* This will not include any markers for absolute
* references, so use {@link #formatAsString()}
* to properly turn references into strings.
*/
public String[] getCellRefParts() {
return new String[] {
_sheetName,
Integer.toString(_rowIndex+1),
convertNumToColString(_colIndex)
};
}
/**
* Appends cell reference with '$' markers for absolute values as required.
* Sheet name is not included.

145
src/testcases/org/apache/poi/hssf/util/TestCellReference.java
View File

@ -106,4 +106,147 @@ public final class TestCellReference extends TestCase {
int actualResult = CellReference.classifyCellReference(ref);
assertEquals(expectedResult, actualResult);
}
}
public void testGetCellRefParts() {
CellReference cellReference;
String[] parts;
String cellRef = "A1";
cellReference = new CellReference(cellRef);
assertEquals(0, cellReference.getCol());
parts = cellReference.getCellRefParts();
assertNotNull(parts);
assertEquals(null, parts[0]);
assertEquals("1", parts[1]);
assertEquals("A", parts[2]);
cellRef = "AA1";
cellReference = new CellReference(cellRef);
assertEquals(26, cellReference.getCol());
parts = cellReference.getCellRefParts();
assertNotNull(parts);
assertEquals(null, parts[0]);
assertEquals("1", parts[1]);
assertEquals("AA", parts[2]);
cellRef = "AA100";
cellReference = new CellReference(cellRef);
assertEquals(26, cellReference.getCol());
parts = cellReference.getCellRefParts();
assertNotNull(parts);
assertEquals(null, parts[0]);
assertEquals("100", parts[1]);
assertEquals("AA", parts[2]);
cellRef = "AAA300";
cellReference = new CellReference(cellRef);
assertEquals(702, cellReference.getCol());
parts = cellReference.getCellRefParts();
assertNotNull(parts);
assertEquals(null, parts[0]);
assertEquals("300", parts[1]);
assertEquals("AAA", parts[2]);
cellRef = "ZZ100521";
cellReference = new CellReference(cellRef);
assertEquals(26*26+25, cellReference.getCol());
parts = cellReference.getCellRefParts();
assertNotNull(parts);
assertEquals(null, parts[0]);
assertEquals("100521", parts[1]);
assertEquals("ZZ", parts[2]);
cellRef = "ZYX987";
cellReference = new CellReference(cellRef);
assertEquals(26*26*26 + 25*26 + 24 - 1, cellReference.getCol());
parts = cellReference.getCellRefParts();
assertNotNull(parts);
assertEquals(null, parts[0]);
assertEquals("987", parts[1]);
assertEquals("ZYX", parts[2]);
cellRef = "AABC10065";
cellReference = new CellReference(cellRef);
parts = cellReference.getCellRefParts();
assertNotNull(parts);
assertEquals(null, parts[0]);
assertEquals("10065", parts[1]);
assertEquals("AABC", parts[2]);
}
public void testGetColNumFromRef() {
String cellRef = "A1";
CellReference cellReference = new CellReference(cellRef);
assertEquals(0, cellReference.getCol());
cellRef = "AA1";
cellReference = new CellReference(cellRef);
assertEquals(26, cellReference.getCol());
cellRef = "AB1";
cellReference = new CellReference(cellRef);
assertEquals(27, cellReference.getCol());
cellRef = "BA1";
cellReference = new CellReference(cellRef);
assertEquals(26+26, cellReference.getCol());
cellRef = "CA1";
cellReference = new CellReference(cellRef);
assertEquals(26+26+26, cellReference.getCol());
cellRef = "ZA1";
cellReference = new CellReference(cellRef);
assertEquals(26*26, cellReference.getCol());
cellRef = "ZZ1";
cellReference = new CellReference(cellRef);
assertEquals(26*26+25, cellReference.getCol());
cellRef = "AAA1";
cellReference = new CellReference(cellRef);
assertEquals(26*26+26, cellReference.getCol());
cellRef = "A1100";
cellReference = new CellReference(cellRef);
assertEquals(0, cellReference.getCol());
cellRef = "BC15";
cellReference = new CellReference(cellRef);
assertEquals(54, cellReference.getCol());
}
public void testGetRowNumFromRef() {
String cellRef = "A1";
CellReference cellReference = new CellReference(cellRef);
assertEquals(0, cellReference.getRow());
cellRef = "A12";
cellReference = new CellReference(cellRef);
assertEquals(11, cellReference.getRow());
cellRef = "AS121";
cellReference = new CellReference(cellRef);
assertEquals(120, cellReference.getRow());
}
public void testConvertNumToColString() {
short col = 702;
String collRef = new CellReference(0, col).formatAsString();
assertEquals("AAA1", collRef);
short col2 = 0;
String collRef2 = new CellReference(0, col2).formatAsString();
assertEquals("A1", collRef2);
short col3 = 27;
String collRef3 = new CellReference(0, col3).formatAsString();
assertEquals("AB1", collRef3);
short col4 = 2080;
String collRef4 = new CellReference(0, col4).formatAsString();
assertEquals("CBA1", collRef4);
}
}