Examples with RandomAccess com.tom_roush.pdfbox.io.RandomAccess used on opensource projects

Example 1 with RandomAccess

use of com.tom_roush.pdfbox.io.RandomAccess in project PdfBox-Android by TomRoush.

the class COSInputStream method create.

static COSInputStream create(List<Filter> filters, COSDictionary parameters, InputStream in, ScratchFile scratchFile, DecodeOptions options) throws IOException {
    List<DecodeResult> results = new ArrayList<DecodeResult>();
    InputStream input = in;
    if (filters.isEmpty()) {
        input = in;
    } else {
        Set<Filter> filterSet = new HashSet<Filter>(filters);
        if (filterSet.size() != filters.size()) {
            throw new IOException("Duplicate");
        }
        // apply filters
        for (int i = 0; i < filters.size(); i++) {
            if (scratchFile != null) {
                // scratch file
                final RandomAccess buffer = scratchFile.createBuffer();
                DecodeResult result = filters.get(i).decode(input, new RandomAccessOutputStream(buffer), parameters, i, options);
                results.add(result);
                input = new RandomAccessInputStream(buffer) {

                    @Override
                    public void close() throws IOException {
                        buffer.close();
                    }
                };
            } else {
                // in-memory
                ByteArrayOutputStream output = new ByteArrayOutputStream();
                DecodeResult result = filters.get(i).decode(input, output, parameters, i, options);
                results.add(result);
                input = new ByteArrayInputStream(output.toByteArray());
            }
        }
    }
    return new COSInputStream(input, results);
}

Example 2 with RandomAccess

use of com.tom_roush.pdfbox.io.RandomAccess in project PdfBox-Android by TomRoush.

the class COSOutputStream method close.

@Override
public void close() throws IOException {
    try {
        if (buffer != null) {
            try {
                // apply filters in reverse order
                for (int i = filters.size() - 1; i >= 0; i--) {
                    InputStream unfilteredIn = new RandomAccessInputStream(buffer);
                    try {
                        if (i == 0) {
                            /*
                                 * The last filter to run can encode directly to the enclosed output
                                 * stream.
                                 */
                            filters.get(i).encode(unfilteredIn, out, parameters, i);
                        } else {
                            RandomAccess filteredBuffer = scratchFile.createBuffer();
                            try {
                                OutputStream filteredOut = new RandomAccessOutputStream(filteredBuffer);
                                try {
                                    filters.get(i).encode(unfilteredIn, filteredOut, parameters, i);
                                } finally {
                                    filteredOut.close();
                                }
                                RandomAccess tmpSwap = filteredBuffer;
                                filteredBuffer = buffer;
                                buffer = tmpSwap;
                            } finally {
                                filteredBuffer.close();
                            }
                        }
                    } finally {
                        unfilteredIn.close();
                    }
                }
            } finally {
                buffer.close();
                buffer = null;
            }
        }
    } finally {
        super.close();
    }
}