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from russia with love (LOL)

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=10548 #1
PR:
Obtained from:
Submitted by:
Reviewed by:


git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@352795 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andrew C. Oliver 2002-07-21 03:03:57 +00:00
parent d8798390bc
commit a3c338967e
7 changed files with 291 additions and 82 deletions
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31
src/documentation/xdocs/faq.xml
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@ -158,4 +158,35 @@
We will probably enhance HSSF in the future to make this process easier. We will probably enhance HSSF in the future to make this process easier.
</answer> </answer>
</faq> </faq>
<faq>
<question>
I tried to set cell values and Excel sheet name on my native language,
but I failed to do it. :(
</question>
<answer>
By default HSSF uses cell values and sheet names as compressed unicode,
so to support localization you should use Unicode.
To do it you should set it manually:
<source>
//
// for sheet name
//
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet s = wb.createSheet();
wb.setSheetName( 0, "SomeUnicodeName", HSSFWorkbook.ENCODING_UTF_16 );
//
// for cell value
//
HSSFRow r = s.createRow( 0 );
HSSFCell c = r.createCell( (short)0 );
c.setCellType( HSSFCell.CELL_TYPE_STRING );
c.setEncoding( HSSFCell.ENCODING_UTF_16 );
c.setCellValue( "\u0422\u0435\u0441\u0442\u043E\u0432\u0430\u044F" );
</source>
</answer>
</faq>
</faqs> </faqs>

84
src/documentation/xdocs/hssf/how-to.xml
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@ -7,6 +7,7 @@
<authors> <authors>
<person email="acoliver2@users.sourceforge.net" name="Andrew C. Oliver" id="AO"/> <person email="acoliver2@users.sourceforge.net" name="Andrew C. Oliver" id="AO"/>
<person email="glens@apache.org" name="Glen Stampoultzis" id="GJS"/> <person email="glens@apache.org" name="Glen Stampoultzis" id="GJS"/>
<person email="sergeikozello@mail.ru" name="Sergei Kozello" id="SK"/>
</authors> </authors>
</header> </header>
<body> <body>
@ -42,7 +43,10 @@
sequence to the workbook. Sheets do not in themselves have a sheet sequence to the workbook. Sheets do not in themselves have a sheet
name (the tab at the bottom); you set name (the tab at the bottom); you set
the name associated with a sheet by calling the name associated with a sheet by calling
HSSFWorkbook.setSheetName(sheetindex,&quot;SheetName&quot;).</p> HSSFWorkbook.setSheetName(sheetindex,&quot;SheetName&quot;,encoding).
The name may be in 8bit format (HSSFWorkbook.ENCODING_COMPRESSED_UNICODE)
or Unicode (HSSFWorkbook.ENCODING_UTF_16). Default encoding is 8bit per char.
</p>
<p>Rows are created by calling createRow(rowNumber) from an existing <p>Rows are created by calling createRow(rowNumber) from an existing
instance of HSSFSheet. Only rows that have cell values should be instance of HSSFSheet. Only rows that have cell values should be
added to the sheet. To set the row's height, you just call added to the sheet. To set the row's height, you just call
@ -98,18 +102,20 @@ HSSFFont f2 = wb.createFont();
//set font 1 to 12 point type //set font 1 to 12 point type
f.setFontHeightInPoints((short) 12); f.setFontHeightInPoints((short) 12);
//make it red //make it blue
f.setColor((short) HSSFColor.RED.index); f.setColor( (short)0xc );
// make it bold // make it bold
//arial is the default font //arial is the default font
f.setBoldweight(f.BOLDWEIGHT_BOLD); f.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
//set font 2 to 10 point type //set font 2 to 10 point type
f2.setFontHeightInPoints((short) 10); f2.setFontHeightInPoints((short) 10);
//make it the color at palette index 0xf (white) //make it red
f2.setColor((short) HSSFColor.WHITE.index); f2.setColor( (short)HSSFFont.COLOR_RED );
//make it bold //make it bold
f2.setBoldweight(f2.BOLDWEIGHT_BOLD); f2.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
f2.setStrikeout( true );
//set cell stlye //set cell stlye
cs.setFont(f); cs.setFont(f);
@ -120,16 +126,18 @@ cs.setDataFormat(HSSFDataFormat.getFormat("($#,##0_);[Red]($#,##0)"));
cs2.setBorderBottom(cs2.BORDER_THIN); cs2.setBorderBottom(cs2.BORDER_THIN);
//fill w fg fill color //fill w fg fill color
cs2.setFillPattern((short) HSSFCellStyle.SOLID_FOREGROUND); cs2.setFillPattern((short) HSSFCellStyle.SOLID_FOREGROUND);
// set foreground fill to red
cs2.setFillForegroundColor((short) HSSFColor.RED.index);
// set the font // set the font
cs2.setFont(f2); cs2.setFont(f2);
// set the sheet name to HSSF Test // set the sheet name in Unicode
wb.setSheetName(0, "HSSF Test"); wb.setSheetName(0, "\u0422\u0435\u0441\u0442\u043E\u0432\u0430\u044F " +
// create a sheet with 300 rows (0-299) "\u0421\u0442\u0440\u0430\u043D\u0438\u0447\u043A\u0430",
for (rownum = (short) 0; rownum < 300; rownum++) HSSFWorkbook.ENCODING_UTF_16 );
// in case of compressed Unicode
// wb.setSheetName(0, "HSSF Test", HSSFWorkbook.ENCODING_COMPRESSED_UNICODE );
// create a sheet with 30 rows (0-29)
for (rownum = (short) 0; rownum < 30; rownum++)
{ {
// create a row // create a row
r = s.createRow(rownum); r = s.createRow(rownum);
@ -141,8 +149,8 @@ for (rownum = (short) 0; rownum < 300; rownum++)
} }
//r.setRowNum(( short ) rownum); //r.setRowNum(( short ) rownum);
// create 50 cells (0-49) (the += 2 becomes apparent later // create 10 cells (0-9) (the += 2 becomes apparent later
for (short cellnum = (short) 0; cellnum < 50; cellnum += 2) for (short cellnum = (short) 0; cellnum < 10; cellnum += 2)
{ {
// create a numeric cell // create a numeric cell
c = r.createCell(cellnum); c = r.createCell(cellnum);
@ -151,29 +159,31 @@ for (rownum = (short) 0; rownum < 300; rownum++)
+ (((double) rownum / 1000) + (((double) rownum / 1000)
+ ((double) cellnum / 10000))); + ((double) cellnum / 10000)));
String cellValue;
// create a string cell (see why += 2 in the
c = r.createCell((short) (cellnum + 1));
// on every other row // on every other row
if ((rownum % 2) == 0) if ((rownum % 2) == 0)
{ {
// set this cell to the first cell style we defined // set this cell to the first cell style we defined
c.setCellStyle(cs); c.setCellStyle(cs);
// set the cell's string value to "Test"
c.setEncoding( HSSFCell.ENCODING_COMPRESSED_UNICODE );
c.setCellValue( "Test" );
}
else
{
c.setCellStyle(cs2);
// set the cell's string value to "\u0422\u0435\u0441\u0442"
c.setEncoding( HSSFCell.ENCODING_UTF_16 );
c.setCellValue( "\u0422\u0435\u0441\u0442" );
} }
// create a string cell (see why += 2 in the
c = r.createCell((short) (cellnum + 1));
// set the cell's string value to "TEST"
c.setCellValue("TEST");
// make this column a bit wider // make this column a bit wider
s.setColumnWidth((short) (cellnum + 1), (short) ((50 * 8) / ((double) 1 / 20))); s.setColumnWidth((short) (cellnum + 1), (short) ((50 * 8) / ((double) 1 / 20)));
// on every other row
if ((rownum % 2) == 0)
{
// set this to the white on red cell style
// we defined above
c.setCellStyle(cs2);
}
} }
} }
@ -383,21 +393,21 @@ level API (and indirectly the low level support). The main body of
its code is repeated above. To run it: its code is repeated above. To run it:
</p> </p>
<ul> <ul>
<li>download the poi-alpha build and untar it (tar xvzf <li>download the poi-alpha build and untar it (tar xvzf
tarball.tar.gz) tarball.tar.gz)
</li> </li>
<li>set up your classpath as follows: <li>set up your classpath as follows:
<code>export HSSFDIR={wherever you put HSSF's jar files} <code>export HSSFDIR={wherever you put HSSF's jar files}
export LOG4JDIR={wherever you put LOG4J's jar files} export LOG4JDIR={wherever you put LOG4J's jar files}
export CLASSPATH=$CLASSPATH:$HSSFDIR/hssf.jar:$HSSFDIR/poi-poifs.jar:$HSSFDIR/poi-util.jar:$LOG4JDIR/jog4j.jar</code> export CLASSPATH=$CLASSPATH:$HSSFDIR/hssf.jar:$HSSFDIR/poi-poifs.jar:$HSSFDIR/poi-util.jar:$LOG4JDIR/jog4j.jar</code>
</li><li>type: </li><li>type:
<code>java org.apache.poi.hssf.dev.HSSF ~/myxls.xls write</code></li> <code>java org.apache.poi.hssf.dev.HSSF ~/myxls.xls write</code></li>
</ul> </ul>
<p></p> <p></p>
<p>This should generate a test sheet in your home directory called <code>&quot;myxls.xls&quot;</code>. </p> <p>This should generate a test sheet in your home directory called <code>&quot;myxls.xls&quot;</code>. </p>
<ul> <ul>
<li>Type: <li>Type:
<code>java org.apache.poi.hssf.dev.HSSF ~/input.xls output.xls</code> <code>java org.apache.poi.hssf.dev.HSSF ~/input.xls output.xls</code>
<br/> <br/>
<br/> <br/>
This is the read/write/modify test. It reads in the spreadsheet, modifies a cell, and writes it back out. This is the read/write/modify test. It reads in the spreadsheet, modifies a cell, and writes it back out.

32
src/java/org/apache/poi/hssf/model/Workbook.java
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@ -60,6 +60,7 @@ import java.io.*;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.List; import java.util.List;
import java.util.Iterator; import java.util.Iterator;
import java.util.Locale;
import org.apache.poi.util.POILogger; import org.apache.poi.util.POILogger;
@ -85,6 +86,7 @@ import org.apache.poi.hssf.util.HSSFColor;
* *
* @author Andrew C. Oliver (acoliver at apache dot org) * @author Andrew C. Oliver (acoliver at apache dot org)
* @author Glen Stampoultzis (glens at apache.org) * @author Glen Stampoultzis (glens at apache.org)
* @author Sergei Kozello (sergeikozello at mail.ru)
* @see org.apache.poi.hssf.usermodel.HSSFWorkbook * @see org.apache.poi.hssf.usermodel.HSSFWorkbook
* @version 1.0-pre * @version 1.0-pre
*/ */
@ -410,6 +412,7 @@ public class Workbook {
return ( BackupRecord ) records.get(backuppos); return ( BackupRecord ) records.get(backuppos);
} }
/** /**
* sets the name for a given sheet. If the boundsheet record doesn't exist and * sets the name for a given sheet. If the boundsheet record doesn't exist and
* its only one more than we have, go ahead and create it. If its > 1 more than * its only one more than we have, go ahead and create it. If its > 1 more than
@ -419,12 +422,18 @@ public class Workbook {
* @param sheetname the name for the sheet * @param sheetname the name for the sheet
*/ */
public void setSheetName(int sheetnum, String sheetname) { // for compartibility
public void setSheetName(int sheetnum, String sheetname ) {
setSheetName( sheetnum, sheetname, (byte)0 );
}
public void setSheetName(int sheetnum, String sheetname, short encoding ) {
checkSheets(sheetnum); checkSheets(sheetnum);
(( BoundSheetRecord ) boundsheets.get(sheetnum))
.setSheetname(sheetname); BoundSheetRecord sheet = (BoundSheetRecord)boundsheets.get( sheetnum );
(( BoundSheetRecord ) boundsheets.get(sheetnum)) sheet.setSheetname(sheetname);
.setSheetnameLength(( byte ) sheetname.length()); sheet.setSheetnameLength( (byte)sheetname.length() );
sheet.setCompressedUnicodeFlag( (byte)encoding );
} }
/** /**
@ -1586,7 +1595,8 @@ public class Workbook {
} }
/** /**
* Creates the Country record with the default and current country set to 1 * Creates the Country record with the default country set to 1
* and current country set to 7 in case of russian locale ("ru_RU") and 1 otherwise
* @return record containing a CountryRecord * @return record containing a CountryRecord
* @see org.apache.poi.hssf.record.CountryRecord * @see org.apache.poi.hssf.record.CountryRecord
* @see org.apache.poi.hssf.record.Record * @see org.apache.poi.hssf.record.Record
@ -1596,7 +1606,15 @@ public class Workbook {
CountryRecord retval = new CountryRecord(); CountryRecord retval = new CountryRecord();
retval.setDefaultCountry(( short ) 1); retval.setDefaultCountry(( short ) 1);
retval.setCurrentCountry(( short ) 1);
// from Russia with love ;)
if ( Locale.getDefault().toString().equals( "ru_RU" ) ) {
retval.setCurrentCountry(( short ) 7);
}
else {
retval.setCurrentCountry(( short ) 1);
}
return retval; return retval;
} }

100
src/java/org/apache/poi/hssf/record/BoundSheetRecord.java
View File

@ -55,8 +55,13 @@
package org.apache.poi.hssf.record; package org.apache.poi.hssf.record;
import java.io.*;
import java.io.UnsupportedEncodingException;
import org.apache.poi.util.BinaryTree;
import org.apache.poi.util.LittleEndian; import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.StringUtil; import org.apache.poi.util.StringUtil;
import sun.awt.image.ByteInterleavedRaster;
/** /**
* Title: Bound Sheet Record (aka BundleSheet) <P> * Title: Bound Sheet Record (aka BundleSheet) <P>
@ -65,6 +70,7 @@ import org.apache.poi.util.StringUtil;
* file. <P> * file. <P>
* REFERENCE: PG 291 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P> * REFERENCE: PG 291 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
* @author Andrew C. Oliver (acoliver at apache dot org) * @author Andrew C. Oliver (acoliver at apache dot org)
* @author Sergei Kozello (sergeikozello at mail.ru)
* @version 2.0-pre * @version 2.0-pre
*/ */
@ -116,18 +122,33 @@ public class BoundSheetRecord
throw new RecordFormatException("NOT A Bound Sheet RECORD"); throw new RecordFormatException("NOT A Bound Sheet RECORD");
} }
} }
/**
* UTF8:
* sid + len + bof + flags + len(str) + unicode + str
* 2 + 2 + 4 + 2 + 1 + 1 + len(str)
*
* UNICODE:
* sid + len + bof + flags + len(str) + unicode + str
* 2 + 2 + 4 + 2 + 1 + 1 + 2 * len(str)
*
*/
protected void fillFields(byte [] data, short size, int offset) protected void fillFields(byte [] data, short size, int offset)
{ {
field_1_position_of_BOF = LittleEndian.getInt(data, field_1_position_of_BOF = LittleEndian.getInt(data, 0 + offset); // bof
0 + offset); field_2_option_flags = LittleEndian.getShort(data, 4 + offset); // flags
field_2_option_flags = LittleEndian.getShort(data, field_3_sheetname_length = data[ 6 + offset ]; // len(str)
4 + offset); field_4_compressed_unicode_flag = data[ 7 + offset ]; // unicode
field_3_sheetname_length = data[ 6 + offset ];
field_4_compressed_unicode_flag = data[ 7 + offset ]; int nameLength = LittleEndian.ubyteToInt( field_3_sheetname_length );
field_5_sheetname = new String(data, 8 + offset, if ( ( field_4_compressed_unicode_flag & 0x01 ) == 1 ) {
LittleEndian.ubyteToInt( field_3_sheetname_length)); field_5_sheetname = StringUtil.getFromUnicodeHigh( data, 8 + offset, nameLength );
} }
else {
field_5_sheetname = new String( data, 8 + offset, nameLength );
}
}
/** /**
* set the offset in bytes of the Beginning of File Marker within the HSSF Stream part of the POIFS file * set the offset in bytes of the Beginning of File Marker within the HSSF Stream part of the POIFS file
@ -169,7 +190,7 @@ public class BoundSheetRecord
* @param flag (0/1) 0- compressed, 1 - uncompressed (16-bit) * @param flag (0/1) 0- compressed, 1 - uncompressed (16-bit)
*/ */
public void setCompressedUnicodeFlag(byte flag) public void setCompressedUnicodeFlag( byte flag )
{ {
field_4_compressed_unicode_flag = flag; field_4_compressed_unicode_flag = flag;
} }
@ -178,8 +199,8 @@ public class BoundSheetRecord
* Set the sheetname for this sheet. (this appears in the tabs at the bottom) * Set the sheetname for this sheet. (this appears in the tabs at the bottom)
* @param sheetname the name of the sheet * @param sheetname the name of the sheet
*/ */
public void setSheetname(String sheetname) public void setSheetname( String sheetname )
{ {
field_5_sheetname = sheetname; field_5_sheetname = sheetname;
} }
@ -215,7 +236,21 @@ public class BoundSheetRecord
public byte getSheetnameLength() public byte getSheetnameLength()
{ {
return field_3_sheetname_length; return field_3_sheetname_length;
}
/**
* get the length of the raw sheetname in characters
* the length depends on the unicode flag
*
* @return number of characters in the raw sheet name
*/
public byte getRawSheetnameLength()
{
return (byte)( ( ( field_4_compressed_unicode_flag & 0x01 ) == 1 )
? 2 * field_3_sheetname_length
: field_3_sheetname_length );
} }
/** /**
@ -262,22 +297,47 @@ public class BoundSheetRecord
public int serialize(int offset, byte [] data) public int serialize(int offset, byte [] data)
{ {
LittleEndian.putShort(data, 0 + offset, sid); LittleEndian.putShort(data, 0 + offset, sid);
LittleEndian.putShort(data, 2 + offset, LittleEndian.putShort( data, 2 + offset, (short)( 8 + getRawSheetnameLength() ) );
( short ) (0x08 + getSheetnameLength()));
LittleEndian.putInt(data, 4 + offset, getPositionOfBof()); LittleEndian.putInt(data, 4 + offset, getPositionOfBof());
LittleEndian.putShort(data, 8 + offset, getOptionFlags()); LittleEndian.putShort(data, 8 + offset, getOptionFlags());
data[ 10 + offset ] = getSheetnameLength(); data[ 10 + offset ] = (byte)( getSheetnameLength() );
data[ 11 + offset ] = getCompressedUnicodeFlag(); data[ 11 + offset ] = getCompressedUnicodeFlag();
if ( ( field_4_compressed_unicode_flag & 0x01 ) == 1 )
StringUtil.putUncompressedUnicode( getSheetname(), data, 12 + offset );
else
StringUtil.putCompressedUnicode( getSheetname(), data, 12 + offset );
// we assume compressed unicode (bein the dern americans we are ;-p)
StringUtil.putCompressedUnicode(getSheetname(), data, 12 + offset);
return getRecordSize(); return getRecordSize();
/*
byte[] fake = new byte[] { (byte)0x85, 0x00, // sid
0x1a, 0x00, // length
0x3C, 0x09, 0x00, 0x00, // bof
0x00, 0x00, // flags
0x09, // len( str )
0x01, // unicode
// <str>
0x21, 0x04, 0x42, 0x04, 0x40, 0x04, 0x30, 0x04, 0x3D,
0x04, 0x38, 0x04, 0x47, 0x04, 0x3A, 0x04, 0x30, 0x04
// </str>
};
sid + len + bof + flags + len(str) + unicode + str
2 + 2 + 4 + 2 + 1 + 1 + len(str)
System.arraycopy( fake, 0, data, offset, fake.length );
return fake.length;
*/
} }
public int getRecordSize() public int getRecordSize()
{ {
return 12 + getSheetnameLength(); // return 30;
} return 12 + getRawSheetnameLength();
}
public short getSid() public short getSid()
{ {

28
src/java/org/apache/poi/hssf/usermodel/HSSFWorkbook.java
View File

@ -70,6 +70,7 @@ import java.io.ByteArrayInputStream;
import java.io.IOException; import java.io.IOException;
import java.io.InputStream; import java.io.InputStream;
import java.io.OutputStream; import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.List; import java.util.List;
@ -82,6 +83,7 @@ import java.util.List;
* @see org.apache.poi.hssf.usermodel.HSSFSheet * @see org.apache.poi.hssf.usermodel.HSSFSheet
* @author Andrew C. Oliver (acoliver at apache dot org) * @author Andrew C. Oliver (acoliver at apache dot org)
* @author Glen Stampoultzis (glens at apache.org) * @author Glen Stampoultzis (glens at apache.org)
* @author Sergei Kozello (sergeikozello at mail.ru)
* @version 2.0-pre * @version 2.0-pre
*/ */
@ -200,7 +202,11 @@ public class HSSFWorkbook
// none currently // none currently
} }
public final static byte ENCODING_COMPRESSED_UNICODE = 0;
public final static byte ENCODING_UTF_16 = 1;
/** /**
* set the sheet name. * set the sheet name.
* @param sheet number (0 based) * @param sheet number (0 based)
@ -208,14 +214,30 @@ public class HSSFWorkbook
*/ */
public void setSheetName(int sheet, String name) public void setSheetName(int sheet, String name)
{
workbook.setSheetName( sheet, name, ENCODING_COMPRESSED_UNICODE );
}
public void setSheetName( int sheet, String name, short encoding )
{ {
if (sheet > (sheets.size() - 1)) if (sheet > (sheets.size() - 1))
{ {
throw new RuntimeException("Sheet out of bounds"); throw new RuntimeException("Sheet out of bounds");
} }
workbook.setSheetName(sheet, name);
switch ( encoding ) {
case ENCODING_COMPRESSED_UNICODE:
case ENCODING_UTF_16:
break;
default:
// TODO java.io.UnsupportedEncodingException
throw new RuntimeException( "Unsupported encoding" );
}
workbook.setSheetName( sheet, name, encoding );
} }
/** /**
* get the sheet name * get the sheet name
* @param sheet Number * @param sheet Number

55
src/java/org/apache/poi/util/StringUtil.java
View File

@ -62,8 +62,14 @@ import java.text.FieldPosition;
/** /**
* Title: String Utility Description: Collection of string handling utilities * Title: String Utility Description: Collection of string handling utilities
*
* Now it is quite confusing: the method pairs, in which
* one of them write data and other read written data are:
* putUncompressedUnicodeHigh and getFromUnicode
* putUncompressedUnicode and getFromUnicodeHigh
* *
*@author Andrew C. Oliver *@author Andrew C. Oliver
*@author Sergei Kozello (sergeikozello at mail.ru)
*@created May 10, 2002 *@created May 10, 2002
*@version 1.0 *@version 1.0
*/ */
@ -79,6 +85,8 @@ public class StringUtil {
* given a byte array of 16-bit unicode characters, compress to 8-bit and * given a byte array of 16-bit unicode characters, compress to 8-bit and
* return a string * return a string
* *
* { 0x16, 0x00 } -> 0x16
*
*@param string the byte array to be converted *@param string the byte array to be converted
*@param offset the initial offset into the *@param offset the initial offset into the
* byte array. it is assumed that string[ offset ] and string[ offset + * byte array. it is assumed that string[ offset ] and string[ offset +
@ -103,22 +111,37 @@ public class StringUtil {
if ((len < 0) || (((string.length - offset) / 2) < len)) { if ((len < 0) || (((string.length - offset) / 2) < len)) {
throw new IllegalArgumentException("Illegal length"); throw new IllegalArgumentException("Illegal length");
} }
byte[] bstring = new byte[len];
int index = offset; char[] chars = new char[ len ];
// start with high bits. for ( int i = 0; i < chars.length; i++ ) {
chars[i] = (char)( string[ offset + ( 2*i ) ] +
for (int k = 0; k < len; k++) { ( string[ offset + ( 2*i+1 ) ] << 8 ) );
bstring[k] = string[index];
index += 2;
} }
return new String(bstring);
return new String( chars );
} }
/**
* given a byte array of 16-bit unicode characters, compress to 8-bit and
* return a string
*
* { 0x16, 0x00 } -> 0x16
*
*@param string the byte array to be converted
*@return the converted string
*/
public static String getFromUnicodeHigh( final byte[] string ) {
return getFromUnicodeHigh( string, 0, string.length / 2 );
}
/** /**
* given a byte array of 16-bit unicode characters, compress to 8-bit and * given a byte array of 16-bit unicode characters, compress to 8-bit and
* return a string * return a string
*
* { 0x00, 0x16 } -> 0x16
* *
*@param string the byte array to be converted *@param string the byte array to be converted
*@param offset the initial offset into the *@param offset the initial offset into the
@ -144,21 +167,23 @@ public class StringUtil {
if ((len < 0) || (((string.length - offset) / 2) < len)) { if ((len < 0) || (((string.length - offset) / 2) < len)) {
throw new IllegalArgumentException("Illegal length"); throw new IllegalArgumentException("Illegal length");
} }
byte[] bstring = new byte[len];
int index = offset + 1;
// start with low bits.
for (int k = 0; k < len; k++) {
bstring[k] = string[index]; char[] chars = new char[ len ];
index += 2; for ( int i = 0; i < chars.length; i++ ) {
chars[i] = (char)( ( string[ offset + ( 2*i ) ] << 8 ) +
string[ offset + ( 2*i+1 ) ] );
} }
return new String(bstring);
return new String( chars );
} }
/** /**
* given a byte array of 16-bit unicode characters, compress to 8-bit and * given a byte array of 16-bit unicode characters, compress to 8-bit and
* return a string * return a string
*
* { 0x00, 0x16 } -> 0x16
* *
*@param string the byte array to be converted *@param string the byte array to be converted
*@return the converted string *@return the converted string

43
src/testcases/org/apache/poi/util/TestStringUtil.java
View File

@ -64,6 +64,7 @@ import java.text.NumberFormat;
* *
* @author Marc Johnson (mjohnson at apache dot org * @author Marc Johnson (mjohnson at apache dot org
* @author Glen Stampoultzis (glens at apache.org) * @author Glen Stampoultzis (glens at apache.org)
* @author Sergei Kozello (sergeikozello at mail.ru)
*/ */
public class TestStringUtil public class TestStringUtil
@ -99,6 +100,48 @@ public class TestStringUtil
StringUtil.getFromUnicode(test_data)); StringUtil.getFromUnicode(test_data));
} }
/**
* test simple form of getFromUnicode with symbols with code below and more 127
*/
public void testGetFromUnicodeSymbolsWithCodesMoreThan127()
{
byte[] test_data = new byte[] { 0x04, 0x22,
0x04, 0x35,
0x04, 0x41,
0x04, 0x42,
0x00, 0x20,
0x00, 0x74,
0x00, 0x65,
0x00, 0x73,
0x00, 0x74,
};
assertEquals("\u0422\u0435\u0441\u0442 test",
StringUtil.getFromUnicode(test_data));
}
/**
* test getFromUnicodeHigh for symbols with code below and more 127
*/
public void testGetFromUnicodeHighSymbolsWithCodesMoreThan127()
{
byte[] test_data = new byte[] { 0x22, 0x04,
0x35, 0x04,
0x41, 0x04,
0x42, 0x04,
0x20, 0x00,
0x74, 0x00,
0x65, 0x00,
0x73, 0x00,
0x74, 0x00,
};
assertEquals("\u0422\u0435\u0441\u0442 test",
StringUtil.getFromUnicodeHigh( test_data ) );
}
/** /**
* Test more complex form of getFromUnicode * Test more complex form of getFromUnicode
*/ */