Example usage for org.apache.pdfbox.cos COSName DIFFERENCES

Introduction

In this page you can find the example usage for org.apache.pdfbox.cos COSName DIFFERENCES.

Prototype

COSName DIFFERENCES

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Usage

From source file:org.apache.fop.render.pdf.pdfbox.FOPPDFSingleByteFont.java

License:Apache License

private Map<Integer, String> getCodeToName(Encoding encoding) {
    Map<Integer, String> codeToName = new HashMap<Integer, String>();
    if (encoding != null) {
        COSBase cos = null;/*from w  ww .  j  a va 2  s  .  co m*/
        if (!(encoding instanceof BuiltInEncoding)) {
            cos = encoding.getCOSObject();
        }
        if (cos instanceof COSDictionary) {
            COSDictionary enc = (COSDictionary) cos;
            COSName baseEncodingName = (COSName) enc.getDictionaryObject(COSName.BASE_ENCODING);
            if (baseEncodingName != null) {
                Encoding baseEncoding = Encoding.getInstance(baseEncodingName);
                codeToName.putAll(baseEncoding.getCodeToNameMap());
            }
            COSArray differences = (COSArray) enc.getDictionaryObject(COSName.DIFFERENCES);
            int currentIndex = -1;
            for (int i = 0; differences != null && i < differences.size(); i++) {
                COSBase next = differences.getObject(i);
                if (next instanceof COSNumber) {
                    currentIndex = ((COSNumber) next).intValue();
                } else if (next instanceof COSName) {
                    COSName name = (COSName) next;
                    codeToName.put(currentIndex++, name.getName());
                }
            }
        } else {
            return encoding.getCodeToNameMap();
        }
    }
    return codeToName;
}

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