Examples of java.io.PushbackInputStream.unread()

java.io.PushbackInputStream.unread()
Pushes back a byte by copying it to the front of the pushback buffer. After this method returns, the next byte to be read will have the value (byte)b. @param b the int value whose low-order byte is to be pushed back. @exception IOException If there is not enough room in the pushbackbuffer for the byte, or this input stream has been closed by invoking its {@link #close()} method.

        //boundary should definitely be in the first 2K;
        PushbackInputStream in = new PushbackInputStream(is, 4096);
        byte buf[] = new byte[2048];
        int i = in.read(buf);
        String msg = new String(buf, 0, i);
        in.unread(buf, 0, i);
        
        // Reset the input stream since we'll need it again later
        message.setContent(InputStream.class, in);


        // Use regex to get the boundary and return null if it's not found

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                        @SuppressWarnings("resource")
                        PushbackInputStream pin = 
                            new PushbackInputStream(getInputStream());
                        int c = pin.read();
                        if (c != -1) {
                            pin.unread((byte)c);
                            in = pin;
                        }
                    } catch (IOException ioe) {
                        // ignore
                    }

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        byte[] messageBytes = ("------=_Part_1\n\nJJJJ\n------=_Part_1\n\n"
            + "Content-Transfer-Encoding: binary\n\n=3D=3D=3D\n------=_Part_1\n").getBytes();
        PushbackInputStream pushbackStream = new PushbackInputStream(new ByteArrayInputStream(messageBytes),
                                                                     2048);
        pushbackStream.read(new byte[4096], 0, 4015);
        pushbackStream.unread(messageBytes);
        pushbackStream.read(new byte[72]);


        MimeBodyPartInputStream m = new MimeBodyPartInputStream(pushbackStream, "------=_Part_1".getBytes(),
                                                                2048);

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        //boundary should definitely be in the first 2K;
        PushbackInputStream in = new PushbackInputStream(is, 4096);
        byte buf[] = new byte[2048];
        int i = in.read(buf);
        String msg = IOUtils.newStringFromBytes(buf, 0, i);
        in.unread(buf, 0, i);
        
        // Reset the input stream since we'll need it again later
        message.setContent(InputStream.class, in);


        // Use regex to get the boundary and return null if it's not found

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        try {
            PushbackInputStream pin = 
                new PushbackInputStream(connection.getInputStream());
            int c = pin.read();
            if (c != -1) {
                pin.unread((byte)c);
                in = pin;
            }
        } catch (IOException ioe) {
            // ignore
        }

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        try {
            PushbackInputStream pin = 
                new PushbackInputStream(connection.getInputStream());
            int c = pin.read();
            if (c != -1) {
                pin.unread((byte)c);
                in = pin;
            }
        } catch (IOException ioe) {
            // ignore
        }

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                        @SuppressWarnings("resource")
                        PushbackInputStream pin = 
                            new PushbackInputStream(getInputStream());
                        int c = pin.read();
                        if (c != -1) {
                            pin.unread((byte)c);
                            in = pin;
                        }
                    } catch (IOException ioe) {
                        // ignore
                    }

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        PushbackInputStream pbis = new PushbackInputStream(is, 128);
        byte[] buf = new byte[4];


        int len = pbis.read(buf);
        if (len > 0) {
            pbis.unread(buf, 0, len);
        }


        if (len == 4) {
            switch (buf[0] & 0x00FF) {
            case 0:

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        PushbackInputStream pbis = new PushbackInputStream(is, 128);
        byte[] buf = new byte[4];


        int len = pbis.read(buf);
        if (len > 0) {
            pbis.unread(buf, 0, len);
        }


        if (len == 4) {
            switch (buf[0] & 0x00FF) {
            case 0:

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            LOG.debug(outputString);
        }


        final PushbackInputStream pis = 
            new PushbackInputStream(encryptedAttachments.get(0).getSourceStream(), 1);
        pis.unread('K');
        encryptedAttachments.get(0).setSourceStream(pis);
        
        attachmentCallbackHandler = new AttachmentCallbackHandler(encryptedAttachments);
        verify(encryptedDoc, attachmentCallbackHandler);

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