diff options
Diffstat (limited to 'src/main/java/org/pdfbox/cos/COSString.java')
| -rw-r--r-- | src/main/java/org/pdfbox/cos/COSString.java | 403 |
1 files changed, 0 insertions, 403 deletions
diff --git a/src/main/java/org/pdfbox/cos/COSString.java b/src/main/java/org/pdfbox/cos/COSString.java deleted file mode 100644 index 2b882f9..0000000 --- a/src/main/java/org/pdfbox/cos/COSString.java +++ /dev/null @@ -1,403 +0,0 @@ -/**
- * Copyright (c) 2003-2005, www.pdfbox.org
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 3. Neither the name of pdfbox; nor the names of its
- * contributors may be used to endorse or promote products derived from this
- * software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * http://www.pdfbox.org
- *
- */
-package org.pdfbox.cos;
-
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.UnsupportedEncodingException;
-
-import org.pdfbox.persistence.util.COSHEXTable;
-
-import org.pdfbox.exceptions.COSVisitorException;
-
-/**
- * This represents a string object in a PDF document.
- *
- * @author Ben Litchfield (ben@benlitchfield.com)
- * @version $Revision: 1.26 $
- */
-public class COSString extends COSBase
-{
- /**
- * One of the open string tokens.
- */
- public static final byte[] STRING_OPEN = new byte[]{ 40 }; //"(".getBytes();
- /**
- * One of the close string tokens.
- */
- public static final byte[] STRING_CLOSE = new byte[]{ 41 }; //")".getBytes( "ISO-8859-1" );
- /**
- * One of the open string tokens.
- */
- public static final byte[] HEX_STRING_OPEN = new byte[]{ 60 }; //"<".getBytes( "ISO-8859-1" );
- /**
- * One of the close string tokens.
- */
- public static final byte[] HEX_STRING_CLOSE = new byte[]{ 62 }; //">".getBytes( "ISO-8859-1" );
- /**
- * the escape character in strings.
- */
- public static final byte[] ESCAPE = new byte[]{ 92 }; //"\\".getBytes( "ISO-8859-1" );
-
- /**
- * CR escape characters.
- */
- public static final byte[] CR_ESCAPE = new byte[]{ 92, 114 }; //"\\r".getBytes( "ISO-8859-1" );
- /**
- * LF escape characters.
- */
- public static final byte[] LF_ESCAPE = new byte[]{ 92, 110 }; //"\\n".getBytes( "ISO-8859-1" );
- /**
- * HT escape characters.
- */
- public static final byte[] HT_ESCAPE = new byte[]{ 92, 116 }; //"\\t".getBytes( "ISO-8859-1" );
- /**
- * BS escape characters.
- */
- public static final byte[] BS_ESCAPE = new byte[]{ 92, 98 }; //"\\b".getBytes( "ISO-8859-1" );
- /**
- * FF escape characters.
- */
- public static final byte[] FF_ESCAPE = new byte[]{ 92, 102 }; //"\\f".getBytes( "ISO-8859-1" );
-
- private ByteArrayOutputStream out = new ByteArrayOutputStream();
-
- /**
- * Constructor.
- */
- public COSString()
- {
- }
-
- /**
- * Explicit constructor for ease of manual PDF construction.
- *
- * @param value The string value of the object.
- */
- public COSString( String value )
- {
- try
- {
- boolean unicode16 = false;
- char[] chars = value.toCharArray();
- for( int i=0; i<chars.length; i++ )
- {
- if( chars[i] > 255 )
- {
- unicode16 = true;
- }
- }
- if( unicode16 )
- {
- out.write( 0xFE );
- out.write( 0xFF );
- out.write( value.getBytes( "UTF-16BE" ) );
- }
- else
- {
- out.write(value.getBytes());
- }
- }
- catch (IOException ignore)
- {
- ignore.printStackTrace();
- //should never happen
- }
- }
-
- /**
- * Explicit constructor for ease of manual PDF construction.
- *
- * @param value The string value of the object.
- */
- public COSString( byte[] value )
- {
- try
- {
- out.write( value );
- }
- catch (IOException ignore)
- {
- ignore.printStackTrace();
- //should never happen
- }
- }
-
- /**
- * This will create a COS string from a string of hex characters.
- *
- * @param hex A hex string.
- * @return A cos string with the hex characters converted to their actual bytes.
- * @throws IOException If there is an error with the hex string.
- */
- public static COSString createFromHexString( String hex ) throws IOException
- {
- COSString retval = new COSString();
- StringBuffer hexBuffer = new StringBuffer( hex.trim() );
- //if odd number then the last hex digit is assumed to be 0
- if( hexBuffer.length() % 2 == 1 )
- {
- hexBuffer.append( "0" );
- }
- for( int i=0; i<hexBuffer.length();)
- {
- String hexChars = "" + hexBuffer.charAt( i++ ) + hexBuffer.charAt( i++ );
- try
- {
- retval.append( Integer.parseInt( hexChars, 16 ) );
- }
- catch( NumberFormatException e )
- {
- throw new IOException( "Error: Expected hex number, actual='" + hexChars + "'" );
- }
- }
- return retval;
- }
-
- /**
- * This will take this string and create a hex representation of the bytes that make the string.
- *
- * @return A hex string representing the bytes in this string.
- */
- public String getHexString()
- {
- StringBuffer retval = new StringBuffer( out.size() * 2 );
- byte[] data = getBytes();
- for( int i=0; i<data.length; i++ )
- {
- retval.append( COSHEXTable.HEX_TABLE[ (data[i]+256)%256 ] );
- }
-
- return retval.toString();
- }
-
- /**
- * This will get the string that this object wraps.
- *
- * @return The wrapped string.
- */
- public String getString()
- {
- String retval;
- String encoding = "ISO-8859-1";
- byte[] data = getBytes();
- int start = 0;
- if( data.length > 2 )
- {
- if( data[0] == (byte)0xFF && data[1] == (byte)0xFE )
- {
- encoding = "UTF-16LE";
- start=2;
- }
- else if( data[0] == (byte)0xFE && data[1] == (byte)0xFF )
- {
- encoding = "UTF-16BE";
- start=2;
- }
- }
- try
- {
- if( encoding != null )
- {
- retval = new String( getBytes(), start, data.length-start, encoding );
- }
- else
- {
- retval = new String( getBytes() );
- }
- }
- catch( UnsupportedEncodingException e )
- {
- //should never happen
- e.printStackTrace();
- retval = new String( getBytes() );
- }
- return retval;
- }
-
- /**
- * This will append a byte[] to the string.
- *
- * @param data The byte[] to add to this string.
- *
- * @throws IOException If an IO error occurs while writing the byte.
- */
- public void append( byte[] data ) throws IOException
- {
- out.write( data );
- }
-
- /**
- * This will append a byte to the string.
- *
- * @param in The byte to add to this string.
- *
- * @throws IOException If an IO error occurs while writing the byte.
- */
- public void append( int in ) throws IOException
- {
- out.write( in );
- }
-
- /**
- * This will reset the internal buffer.
- */
- public void reset()
- {
- out.reset();
- }
-
- /**
- * This will get the bytes of the string.
- *
- * @return A byte array that represents the string.
- */
- public byte[] getBytes()
- {
- return out.toByteArray();
- }
-
- /**
- * @see Object#toString()
- */
- public String toString()
- {
- return "COSString{" + new String( getBytes() ) + "}";
- }
-
- /**
- * This will output this string as a PDF object.
- *
- * @param output The stream to write to.
- * @throws IOException If there is an error writing to the stream.
- */
- public void writePDF( OutputStream output ) throws IOException
- {
- boolean outsideASCII = false;
- //Lets first check if we need to escape this string.
- byte[] bytes = getBytes();
- for( int i=0; i<bytes.length && !outsideASCII; i++ )
- {
- //if the byte is negative then it is an eight bit byte and is
- //outside the ASCII range.
- outsideASCII = bytes[i] <0;
- }
- if( !outsideASCII )
- {
- output.write(STRING_OPEN);
- for( int i=0; i<bytes.length; i++ )
- {
- int b = (bytes[i]+256)%256;
- switch( b )
- {
- case '(':
- case ')':
- case '\\':
- {
- output.write(ESCAPE);
- output.write(b);
- break;
- }
- case 10: //LF
- {
- output.write( LF_ESCAPE );
- break;
- }
- case 13: // CR
- {
- output.write( CR_ESCAPE );
- break;
- }
- case '\t':
- {
- output.write( HT_ESCAPE );
- break;
- }
- case '\b':
- {
- output.write( BS_ESCAPE );
- break;
- }
- case '\f':
- {
- output.write( FF_ESCAPE );
- break;
- }
- default:
- {
- output.write( b );
- }
- }
- }
- output.write(STRING_CLOSE);
- }
- else
- {
- output.write(HEX_STRING_OPEN);
- for(int i=0; i<bytes.length; i++ )
- {
- output.write( COSHEXTable.TABLE[ (bytes[i]+256)%256 ] );
- }
- output.write(HEX_STRING_CLOSE);
- }
- }
-
-
-
- /**
- * visitor pattern double dispatch method.
- *
- * @param visitor The object to notify when visiting this object.
- * @return any object, depending on the visitor implementation, or null
- * @throws COSVisitorException If an error occurs while visiting this object.
- */
- public Object accept(ICOSVisitor visitor) throws COSVisitorException
- {
- return visitor.visitFromString( this );
- }
-
- /**
- * @see Object#equals( Object )
- */
- public boolean equals(Object obj)
- {
- return (obj instanceof COSString) && java.util.Arrays.equals(((COSString) obj).getBytes(), getBytes());
- }
-
- /**
- * @see Object#hashCode()
- */
- public int hashCode()
- {
- return getBytes().hashCode();
- }
-}
\ No newline at end of file |