[PDFBOX-612] Unknown encoding for 'GBK-EUC-H'

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0-incubator
• Fix Version/s: 1.5.0
• Component/s: PDModel
• Labels: encoding
• Environment: Windows
• Assignee: Andreas Lehmkühler
• Reporter: Gang Luo
• Created: 08/Feb/10 00:34
• Updated: 18/May/12 15:31
• Resolved: 18/May/12 15:31

Description

Unknown encoding for 'GBK-EUC-H' for chinese pdf document. To fix it.

1.add method to org.apache.pdfbox.pdmodel.font.PDFont.java

public String getEncodingName() {
COSBase encoding = font.getDictionaryObject(COSName.ENCODING);
if (encoding != null) {
if (encoding instanceof COSName)

{ return ((COSName) encoding).getName(); }

}
return null;
}

2.modify encode method.
from
if( retval == null && cmap != null )

{ retval = cmap.lookup( c, offset, length ); }

//if we havn't found a value yet and
//we are still on the first byte and
//there is no cmap or the cmap does not have 2 byte mappings then try to encode
//using fallback methods.

to

if( retval == null && cmap != null )
{
String encodingStr = getEncodingName();
if (encodingStr != null) {
EncodingConverter converter = EncodingConversionManager.getConverter(encodingStr);
if (converter != null)

{ if (length == 1) return null; retval = converter.convertBytes(c, offset, length, cmap); }

else

{ retval = cmap.lookup( c, offset, length ); }

} else

{ retval = cmap.lookup( c, offset, length ); }

}
//if we havn't found a value yet and
//we are still on the first byte and
//there is no cmap or the cmap does not have 2 byte mappings then try to encode
//using fallback methods.