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SPL(Structured Process Language) A programming language specially for structured data computing.
package com.scudata.excel;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import com.scudata.common.CellLocation;
import com.scudata.common.Matrix;
import com.scudata.common.MessageManager;
import com.scudata.common.RQException;
import com.scudata.common.StringUtils;
import com.scudata.dm.BaseRecord;
import com.scudata.dm.ComputeStack;
import com.scudata.dm.Context;
import com.scudata.dm.Current;
import com.scudata.dm.DataStruct;
import com.scudata.dm.FileObject;
import com.scudata.dm.ILineInput;
import com.scudata.dm.ILineOutput;
import com.scudata.dm.Sequence;
import com.scudata.dm.Table;
import com.scudata.dm.cursor.ICursor;
import com.scudata.expression.Expression;
import com.scudata.resources.AppMessage;
import com.scudata.resources.EngineMessage;
import com.scudata.util.Variant;
/**
* Tools for operating excel
*
*/
public class ExcelTool implements ILineInput, ILineOutput {
/**
* Interface for operating excel
*/
private IExcelTool impl;
/**
* Check the jdk version, it cannot be lower than 1.6.
*/
private void checkVersion() throws RQException {
String v = System.getProperty("java.specification.version");
if (Float.parseFloat(v) < 1.6)
throw new RQException(AppMessage.get().getMessage(
"excel.jreversion"));
}
/**
* Constructor used to export Excel
*
* @param fo
* FileObject
* @param hasTitle
* Is there a header row
* @param isXlsx
* true means xlsx format, false means xls format.
* @param isSsxxf
* Whether to export xlsx files by stream
* @param sheetName
* Excel sheet name
*/
public ExcelTool(FileObject fo, boolean hasTitle, boolean isXlsx,
boolean isSsxxf, Object sheetName) {
this(fo, hasTitle, isXlsx, isSsxxf, sheetName, null);
}
/**
* Constructor used to export Excel
*
* @param fo
* FileObject
* @param hasTitle
* Is there a header row
* @param isXlsx
* true means xlsx format, false means xls format.
* @param isSsxxf
* Whether to export xlsx files by stream
* @param sheetName
* Excel sheet name
* @param pwd
* The password of the excel
*/
public ExcelTool(FileObject fo, boolean hasTitle, boolean isXlsx,
boolean isSsxxf, Object sheetName, String pwd) {
this(fo, hasTitle, isXlsx, isSsxxf, true, sheetName, pwd, false, false);
}
/**
* Constructor used to export Excel
*
* @param fo
* FileObject
* @param hasTitle
* Is there a header row
* @param isXlsx
* true means xlsx format, false means xls format.
* @param isSsxxf
* Whether to export xlsx files by stream
* @param sheetName
* Excel sheet name
* @param pwd
* The password of the excel
* @param isW
* Option @w.
*/
public ExcelTool(FileObject fo, boolean hasTitle, boolean isXlsx,
boolean isSsxxf, boolean isAppend, Object sheetName, String pwd,
boolean isW, boolean isK) {
if (isXlsx) {
checkVersion();
if (isSsxxf) {
impl = new XlsxSExporter(fo, hasTitle, isAppend, sheetName,
pwd, isK);
} else {
impl = new XlsxExporter(fo, hasTitle, isAppend, sheetName, pwd,
isK);
}
} else {
impl = new XlsExporter(fo, hasTitle, isAppend, sheetName, pwd, isK);
}
}
/**
* Constructor used to import Excel
*
* @param fis
* InputStream
* @param isXlsx
* true means xlsx format, false means xls format.
*/
public ExcelTool(InputStream fis, boolean isXlsx) {
this(fis, isXlsx, null);
}
/**
* Constructor used to import Excel
*
* @param fis
* InputStream
* @param isXlsx
* true means xlsx format, false means xls format.
* @param pwd
* The password of the excel
*/
public ExcelTool(InputStream fis, boolean isXlsx, String pwd) {
if (isXlsx) {
checkVersion();
impl = new XlsxImporter(fis, pwd);
} else {
impl = new XlsImporter(fis, pwd);
}
}
/**
* Get the maximum number of rows
*
* @return
*/
public int getMaxLineCount() {
return impl.getMaxLineCount();
}
/**
* Write a row of data
*
* @param items
* Object[]
*/
public void writeLine(Object[] items) throws IOException {
if (impl != null)
impl.writeLine(items);
}
/**
* Read a row of data
*
* @param items
* Object[]
*/
public Object[] readLine() throws IOException {
if (impl != null) {
return impl.readLine();
}
return null;
}
/**
* Skip line
*/
public boolean skipLine() throws IOException {
return impl.readLine() != null;
}
/**
* Complete the read and write operations.
*/
public void output() {
if (impl != null) {
impl.output();
}
}
/**
* Set the name of the sheet to be operated
*
* @param name
*/
public void setSheet(String name) {
if (impl != null) {
impl.setSheet(name);
}
}
/**
* Set the sequence number of the sheet to be operated.
*
* @param index
* Start from 1
*/
public void setSheet(int index) {
if (impl != null) {
impl.setSheet(index);
}
}
/**
* Total number of rows
*
* @return
*/
public int totalCount() {
if (impl != null) {
return impl.totalCount();
}
return 0;
}
/**
* Set start line
*
* @param start
*/
public void setStartRow(int start) {
if (impl != null) {
impl.setStartRow(start);
}
}
/**
* Set the number of rows to be fetched
*
* @param fetchCount
*/
public void setFetchCount(int fetchCount) {
if (impl != null) {
impl.setFetchCount(fetchCount);
}
}
/**
* Close
*/
public void close() throws IOException {
output();
}
/**
* Set the string to the cell of the Excel file. The string can be separated
* by return and tabs, and filled in adjacent rows and columns respectively.
* When sheet is omitted, it is the first page.
*
* @param fo
* FileObject
* @param isXlsx
* true means xlsx format, false means xls format.
* @param s
* Sheet name(If omitted, it is the first page)
* @param c
* Start cell
* @param t
* The string can be separated by return and tabs
* @param isRowInsert
* Whether to insert row
*/
public static void pasteXls(FileObject fo, boolean isXlsx, Object s,
String c, String t, boolean isRowInsert, String pwd) {
CellLocation pos = CellLocation.parse(c);
if (pos == null) {
throw new RQException(AppMessage.get().getMessage(
"excel.invalidcell", c));
}
/* If the string is empty, set the cell to empty. */
Matrix data = ExcelUtils.getStringMatrix(t, true);
if (isXlsx) {
new XlsxPaste(fo, s, pos, data, isRowInsert, pwd).output();
} else {
new XlsPaste(fo, s, pos, data, isRowInsert, pwd).output();
}
}
/**
* Used in function: f.pastexls(c:s,t)
*
* @param fo
* FileObject
* @param isXlsx
* true means xlsx format, false means xls format.
* @param s
* Sheet name(If omitted, it is the first page)
* @param c
* Start cell
* @param t
* The string can be separated by return and tabs
* @param pwd
* Excel password
* @return
*/
public static String pasteXlsRead(FileObject fo, boolean isXlsx, Object s,
String c, String t, String pwd) {
CellLocation startPos = CellLocation.parse(c);
if (startPos == null) {
throw new RQException(AppMessage.get().getMessage(
"excel.invalidcell", c));
}
CellLocation endPos = null;
if (StringUtils.isValidString(t)) {
endPos = CellLocation.parse(t);
if (endPos == null) {
throw new RQException(AppMessage.get().getMessage(
"excel.invalidcell", t));
}
}
int r1 = startPos.getRow();
int c1 = startPos.getCol();
if (endPos != null) {
int r2 = endPos.getRow();
int c2 = endPos.getCol();
startPos = new CellLocation(Math.min(r1, r2), Math.min(c1, c2));
endPos = new CellLocation(Math.max(r1, r2), Math.max(c1, c2));
}
int startRow = startPos.getRow();
InputStream fis = null;
try {
ExcelTool et = new ExcelTool(fis, isXlsx, pwd);
if (s instanceof String) {
et.setSheet((String) s);
} else if (s instanceof Number) {
et.setSheet(((Number) s).intValue() - 1);
} else if (s != null) {
MessageManager mm = EngineMessage.get();
throw new RQException("xlspaste"
+ mm.getMessage("function.paramTypeError"));
}
et.setStartRow(startRow);
Object[] line = et.readLine();
if (line == null || line.length == 0) {
return null;
}
int endCol = -1;
if (endPos != null) {
endCol = endPos.getCol();
} else {
endCol = line.length - 1;
}
int startCol = startPos.getCol();
int colCount = endCol - startCol + 1;
List dataList = new ArrayList();
Object[] lineArea = new Object[colCount];
System.arraycopy(line, startCol, lineArea, 0, colCount);
dataList.add(lineArea);
int row = startRow + 1;
while (endPos == null || row <= endPos.getRow()) {
line = et.readLine();
if (line == null) {
break;
}
lineArea = new Object[colCount];
System.arraycopy(line, startCol, lineArea, 0, colCount);
dataList.add(lineArea);
row++;
}
final char colSep = '\t';
final String rowSep = ExcelUtils.getLineSeparator();
StringBuffer buf = new StringBuffer();
for (int r = 0, len = dataList.size(); r < len; r++) {
if (r > 0) {
buf.append(rowSep);
}
Object[] rowData = dataList.get(r);
for (int i = 0; i < rowData.length; i++) {
if (i > 0)
buf.append(colSep);
buf.append(Variant.toExportString(rowData[i]));
}
}
return buf.toString();
} catch (Exception ex) {
throw new RQException(ex.getMessage(), ex);
} finally {
if (fis != null)
try {
fis.close();
} catch (Exception ex) {
}
}
}
/**
* Import excel file
*
* @param opt
* The options
* @return
* @throws IOException
*/
public Object fileXlsImport(String opt) throws IOException {
boolean isW = opt != null && opt.indexOf('w') != -1;
if (isW) {
return xlsImportW(0, Integer.MAX_VALUE, opt);
}
boolean isS = opt != null && opt.indexOf('s') != -1;
if (isS)
return xlsImportS(0, Integer.MAX_VALUE, opt);
boolean removeBlank = opt != null && opt.indexOf('b') != -1;
boolean isN = opt != null && opt.indexOf('n') != -1;
Object[] line = readLine(isN, false);
if (line == null)
return null;
if (removeBlank) {
/* Remove blank lines at the head */
while (ExcelUtils.isBlankRow(line)) {
line = readLine(isN, false);
/* Null means the end. The blank line is Object[0]. */
if (line == null)
return null;
}
}
int fcount = line.length;
if (fcount == 0)
return null;
Table table;
if (opt != null && opt.indexOf('t') != -1) {
String[] items = new String[fcount];
for (int f = 0; f < fcount; ++f) {
items[f] = Variant.toString(line[f]);
}
table = new Table(items);
} else {
String[] items = new String[fcount];
table = new Table(items);
BaseRecord r = table.newLast();
for (int f = 0; f < fcount; ++f) {
r.setNormalFieldValue(f, line[f]);
}
}
while (true) {
line = readLine(isN, false);
if (line == null)
break;
int curLen = line.length;
if (curLen > fcount)
curLen = fcount;
BaseRecord r = table.newLast();
for (int f = 0; f < curLen; ++f) {
r.setNormalFieldValue(f, line[f]);
}
}
table.trimToSize();
if (removeBlank)
removeTableTailBlank(table);
return table;
}
/**
* Import excel file
*
* @param fields
* The names of the fields to be imported. Null means import all
* fields.
* @param startRow
* Start row
* @param endRow
* End row
* @param s
* Sheet name(If omitted, it is the first page)
* @param opt
* The options
* @return
* @throws IOException
*/
public Object fileXlsImport(String[] fields, int startRow, int endRow,
Object s, String opt) throws IOException {
boolean bTitle = opt != null && opt.indexOf('t') != -1;
boolean removeBlank = opt != null && opt.indexOf('b') != -1;
Object[] line;
if (s instanceof String) {
setSheet((String) s);
} else if (s instanceof Number) {
setSheet(((Number) s).intValue() - 1);
} else if (s != null) {
MessageManager mm = EngineMessage.get();
throw new RQException("import"
+ mm.getMessage("function.paramTypeError"));
}
/* If the start line is specified, the title line is at the start line. */
if (startRow > 0) {
startRow--;
} else if (startRow < 0) {
int rowCount = totalCount();
startRow += rowCount;
if (startRow < 0)
startRow = 0;
}
if (endRow > 0) {
endRow--;
} else if (endRow == 0) {
endRow = totalCount() - 1;
} else if (endRow < 0) {
int rowCount = totalCount();
endRow += rowCount;
}
if (endRow < startRow)
return null;
setStartRow(startRow);
boolean isW = opt != null && opt.indexOf('w') != -1;
if (isW) {
return xlsImportW(startRow, endRow, opt);
}
boolean isS = opt != null && opt.indexOf('s') != -1;
if (isS)
return xlsImportS(startRow, endRow, opt);
boolean isN = opt != null && opt.indexOf('n') != -1;
line = readLine(isN, false);
if (line == null)
return null;
if (removeBlank) {
/* Remove blank lines at the head */
while (ExcelUtils.isBlankRow(line)) {
startRow++;
if (startRow > endRow)
return null;
line = readLine(isN, false);
/* Null means the end. The blank line is Object[0]. */
if (line == null)
return null;
}
}
int fcount = line.length;
if (fcount == 0)
return null;
Table table;
DataStruct ds;
if (bTitle) {
String[] items = new String[fcount];
for (int f = 0; f < fcount; ++f) {
items[f] = Variant.toString(line[f]);
}
ds = new DataStruct(items);
startRow++;
} else {
String[] items = new String[fcount];
ds = new DataStruct(items);
setStartRow(startRow);
}
if (fields == null || fields.length == 0) {
table = new Table(ds);
while (startRow <= endRow) {
line = readLine(isN, false);
if (line == null)
break;
startRow++;
int curLen = line.length;
if (curLen > fcount)
curLen = fcount;
BaseRecord r = table.newLast();
for (int f = 0; f < curLen; ++f) {
r.setNormalFieldValue(f, line[f]);
}
}
} else {
int[] index = new int[fcount];
for (int i = 0; i < fcount; ++i) {
index[i] = -1;
}
for (int i = 0, count = fields.length; i < count; ++i) {
int q = ds.getFieldIndex(fields[i]);
if (q < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fields[i]
+ mm.getMessage("ds.fieldNotExist"));
}
if (index[q] != -1) {
MessageManager mm = EngineMessage.get();
throw new RQException(fields[i]
+ mm.getMessage("ds.colNameRepeat"));
}
index[q] = i;
fields[i] = ds.getFieldName(q);
}
DataStruct newDs = new DataStruct(fields);
table = new Table(newDs);
while (startRow <= endRow) {
line = readLine(isN, false);
if (line == null)
break;
startRow++;
int curLen = line.length;
if (curLen > fcount)
curLen = fcount;
BaseRecord r = table.newLast();
for (int f = 0; f < curLen; ++f) {
if (index[f] != -1)
r.setNormalFieldValue(index[f], line[f]);
}
}
}
table.trimToSize();
if (removeBlank)
removeTableTailBlank(table);
return table;
}
/**
* Read a row of data
*
* @param isN @n
* @param isW @w
* @return
* @throws IOException
*/
private Object[] readLine(boolean isN, boolean isW) throws IOException {
Object[] line = readLine();
if (line == null)
return null;
if (isN) {
for (int i = 0; i < line.length; i++) {
line[i] = ExcelUtils.trim(line[i], isW);
}
}
return line;
}
/**
* Use option @w when importing excel file.
*
* @param startRow
* Start row
* @param endRow
* End row
* @param opt
* The options
* @return
* @throws IOException
*/
public Sequence xlsImportW(int startRow, int endRow, String opt)
throws IOException {
boolean isP = opt != null && opt.indexOf("p") > -1;
boolean isN = opt != null && opt.indexOf("n") > -1;
Sequence seq = new Sequence();
Object[] line;
while (startRow <= endRow) {
line = readLine(isN, true);
if (line == null)
break;
startRow++;
Sequence subSeq = new Sequence(line.length);
for (Object data : line) {
subSeq.add(data);
}
seq.add(subSeq);
}
if (isP)
seq = ExcelUtils.transpose(seq);
return seq;
}
/**
* Use option @s when importing excel file.
*
* @param startRow
* Start row
* @param endRow
* End row
* @param opt
* The option
* @return
* @throws IOException
*/
public String xlsImportS(int startRow, int endRow, String opt)
throws IOException {
boolean isN = opt != null && opt.indexOf("n") != -1;
StringBuffer buf = new StringBuffer();
Object[] line;
boolean firstLine = true;
while (startRow <= endRow) {
line = readLine(isN, false);
if (line == null)
break;
startRow++;
if (firstLine) {
firstLine = false;
} else {
buf.append(ROW_SEP);
}
for (int c = 0; c < line.length; c++) {
if (c > 0) {
buf.append(COL_SEP);
}
buf.append(line[c] == null ? "" : line[c].toString());
}
}
return buf.toString();
}
/**
* Line separator
*/
public static final String ROW_SEP = "\n";
/**
* Column separator
*/
public static final String COL_SEP = "\t";
/**
* Remove blank lines at the end of the table
*
* @param table
*/
public static void removeTableTailBlank(Table table) {
int len = table.length();
int lastContentRow = len;
Object[] line;
for (int i = len; i >= 1; i--) {
line = table.getRecord(i).getFieldValues();
if (!ExcelUtils.isBlankRow(line)) {
lastContentRow = i;
break;
}
}
if (lastContentRow < len) {
/* Blank line at the end */
table.delete(lastContentRow + 1, len);
}
}
/**
* Export excel file
*
* @param series
* Sequence
* @param exps
* Field expressions
* @param names
* Field names
* @param bTitle
* Is there a header row
* @param isW
* Is there an option @w
* @param ctx
* Context
* @throws IOException
*/
public void fileXlsExport(Sequence series, Expression[] exps,
String[] names, boolean bTitle, boolean isW, Context ctx)
throws IOException {
if (isW) {
fileXlsExportW(series);
return;
}
if (exps == null) {
int fcount = 1;
DataStruct ds = series.dataStruct();
if (ds == null) {
int len = series.length();
if (bTitle && len > 0)
writeLine(new String[] { FileObject.S_FIELDNAME });
Object[] lineObjs = new Object[fcount];
for (int i = 1; i <= len; ++i) {
lineObjs[0] = series.getMem(i);
writeLine(lineObjs);
}
} else {
fcount = ds.getFieldCount();
if (bTitle)
writeLine(ds.getFieldNames());
Object[] lineObjs = new Object[fcount];
for (int i = 1, len = series.length(); i <= len; ++i) {
BaseRecord r = (BaseRecord) series.getMem(i);
Object[] vals = r.getFieldValues();
for (int f = 0; f < fcount; ++f) {
if (vals[f] instanceof BaseRecord) {
lineObjs[f] = ((BaseRecord) vals[f]).value();
} else {
lineObjs[f] = vals[f];
}
}
writeLine(lineObjs);
}
}
} else {
ComputeStack stack = ctx.getComputeStack();
Current current = new Current(series);
stack.push(current);
try {
int fcount = exps.length;
if (bTitle) {
if (names == null)
names = new String[fcount];
series.getNewFieldNames(exps, names, "export");
writeLine(names);
}
Object[] lineObjs = new Object[fcount];
for (int i = 1, len = series.length(); i <= len; ++i) {
current.setCurrent(i);
for (int f = 0; f < fcount; ++f) {
lineObjs[f] = exps[f].calculate(ctx);
if (lineObjs[f] instanceof BaseRecord) {
lineObjs[f] = ((BaseRecord) lineObjs[f]).value();
}
}
writeLine(lineObjs);
}
} finally {
stack.pop();
}
}
}
/**
* Export excel file
*
* @param cursor
* Cursor interface
* @param exps
* Field Expressions
* @param names
* Field names
* @param bTitle
* Is there a header row
* @param isW
* Is there an option @w
* @param ctx
* Context
* @throws IOException
*/
public void fileXlsExport(ICursor cursor, Expression[] exps,
String[] names, boolean bTitle, boolean isW, Context ctx)
throws IOException {
if (isW) {
fileXlsExportW(cursor);
return;
}
Sequence table = cursor.fetch(BLOCKCOUNT);
if (table == null || table.length() == 0)
return;
if (exps == null) {
int fcount = 1;
DataStruct ds = table.dataStruct();
if (ds == null) {
if (bTitle)
writeLine(new String[] { FileObject.S_FIELDNAME });
} else {
fcount = ds.getFieldCount();
if (bTitle)
writeLine(ds.getFieldNames());
}
Object[] lineObjs = new Object[fcount];
while (true) {
if (ds == null) {
for (int i = 1, len = table.length(); i <= len; ++i) {
lineObjs[0] = table.getMem(i);
writeLine(lineObjs);
}
} else {
for (int i = 1, len = table.length(); i <= len; ++i) {
BaseRecord r = (BaseRecord) table.getMem(i);
Object[] vals = r.getFieldValues();
for (int f = 0; f < fcount; ++f) {
if (vals[f] instanceof BaseRecord) {
lineObjs[f] = ((BaseRecord) vals[f]).value();
} else {
lineObjs[f] = vals[f];
}
}
writeLine(lineObjs);
}
}
table = cursor.fetch(BLOCKCOUNT);
if (table == null || table.length() == 0)
break;
}
} else {
int fcount = exps.length;
Object[] lineObjs = new Object[fcount];
if (bTitle) {
if (names == null)
names = new String[fcount];
table.getNewFieldNames(exps, names, "export");
writeLine(names);
}
ComputeStack stack = ctx.getComputeStack();
while (true) {
Current current = new Current(table);
stack.push(current);
try {
for (int i = 1, len = table.length(); i <= len; ++i) {
current.setCurrent(i);
for (int f = 0; f < fcount; ++f) {
lineObjs[f] = exps[f].calculate(ctx);
if (lineObjs[f] instanceof BaseRecord) {
lineObjs[f] = ((BaseRecord) lineObjs[f])
.value();
}
}
writeLine(lineObjs);
}
} finally {
stack.pop();
}
table = cursor.fetch(BLOCKCOUNT);
if (table == null || table.length() == 0)
break;
}
}
}
/**
* Export excel file using option @w
*
* @param seq
* Sequence
* @throws IOException
*/
private void fileXlsExportW(Sequence seq) throws IOException {
if (seq == null || seq.length() == 0)
return;
Object[] line;
for (int i = 1, len = seq.length(); i <= len; i++) {
Object rowData = seq.get(i);
line = getLine(rowData);
writeLine(line);
}
}
/**
* Export excel file using option @w
*
* @param cursor
* ICursor
* @throws IOException
*/
private void fileXlsExportW(ICursor cursor) throws IOException {
if (cursor == null)
return;
Sequence seq;
Object[] line;
while (true) {
seq = cursor.fetch(BLOCKCOUNT);
if (seq == null || seq.length() == 0)
break;
for (int i = 1, len = seq.length(); i <= len; i++) {
Object rowData = seq.get(i);
line = getLine(rowData);
writeLine(line);
}
}
}
/**
* Convert a row of data into Object[]
*
* @param rowData
* @return
*/
private Object[] getLine(Object rowData) {
Object[] line = null;
if (rowData != null) {
if (rowData instanceof Sequence) {
Sequence subSeq = (Sequence) rowData;
int subLen = subSeq.length();
line = new Object[subLen];
for (int j = 1; j <= subLen; j++) {
line[j - 1] = subSeq.get(j);
}
} else if (rowData instanceof BaseRecord) {
BaseRecord record = (BaseRecord) rowData;
line = record.getFieldValues();
} else if (rowData instanceof Object[]) {
line = (Object[]) rowData;
} else {
line = new Object[1];
line[0] = rowData;
}
}
return line;
}
/**
* Binary file block size
*/
private static final int BLOCKCOUNT = 999;
}
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