Examples with PushbackInputStream java.io.PushbackInputStream used on opensource projects

Example 16 with PushbackInputStream

use of java.io.PushbackInputStream in project robovm by robovm.

the class OldPushbackInputStreamTest method test_unread$B.

public void test_unread$B() throws IOException {
    PushbackInputStream tobj;
    String str2 = "0123456789";
    byte[] buf2 = str2.getBytes();
    byte[] readBuf = new byte[10];
    tobj = new PushbackInputStream(underlying, 10);
    tobj.unread(buf2);
    assertEquals("Wrong number!", 30 + 10, tobj.available());
    try {
        tobj.unread(buf2);
        fail("IOException not thrown.");
    } catch (IOException e) {
    // expected
    }
    tobj.read(readBuf);
    assertEquals("Incorrect bytes read", str2, new String(readBuf));
    underlying.throwExceptionOnNextUse = true;
    try {
        tobj.read(buf2);
        fail("IOException not thrown.");
    } catch (IOException e) {
    // expected
    }
    // Test for method void java.io.PushbackInputStream.unread(byte [])
    try {
        byte[] buf = new byte[100];
        pis.read(buf, 0, buf.length);
        assertTrue("Incorrect bytes read", new String(buf).equals(fileString.substring(0, 100)));
        pis.unread(buf);
        pis.read(buf, 0, 50);
        assertTrue("Failed to unread bytes", new String(buf, 0, 50).equals(fileString.substring(0, 50)));
    } catch (IOException e) {
        fail("IOException during unread test : " + e.getMessage());
    }
}

Example 17 with PushbackInputStream

use of java.io.PushbackInputStream in project nutz by nutzam.

the class Streams method utf8filte.

/**
     * 判断并移除UTF-8的BOM头
     */
public static InputStream utf8filte(InputStream in) {
    try {
        if (in.available() == -1)
            return in;
        PushbackInputStream pis = new PushbackInputStream(in, 3);
        byte[] header = new byte[3];
        int len = pis.read(header, 0, 3);
        if (len < 1)
            return in;
        if (header[0] != UTF_BOM[0] || header[1] != UTF_BOM[1] || header[2] != UTF_BOM[2]) {
            pis.unread(header, 0, len);
        }
        return pis;
    } catch (IOException e) {
        throw Lang.wrapThrow(e);
    }
}

Example 18 with PushbackInputStream

use of java.io.PushbackInputStream in project XobotOS by xamarin.

the class JDKX509CertificateFactory method engineGenerateCRL.

/**
     * Generates a certificate revocation list (CRL) object and initializes
     * it with the data read from the input stream inStream.
     */
public CRL engineGenerateCRL(InputStream inStream) throws CRLException {
    if (currentCrlStream == null) {
        currentCrlStream = inStream;
        sCrlData = null;
        sCrlDataObjectCount = 0;
    } else if (// reset if input stream has changed
    currentCrlStream != inStream) {
        currentCrlStream = inStream;
        sCrlData = null;
        sCrlDataObjectCount = 0;
    }
    try {
        if (sCrlData != null) {
            if (sCrlDataObjectCount != sCrlData.size()) {
                return getCRL();
            } else {
                sCrlData = null;
                sCrlDataObjectCount = 0;
                return null;
            }
        }
        int limit = ProviderUtil.getReadLimit(inStream);
        PushbackInputStream pis = new PushbackInputStream(inStream);
        int tag = pis.read();
        if (tag == -1) {
            return null;
        }
        pis.unread(tag);
        if (// assume ascii PEM encoded.
        tag != 0x30) {
            return readPEMCRL(pis);
        } else {
            // lazy evaluate to help processing of large CRLs
            return readDERCRL(new ASN1InputStream(pis, limit, true));
        }
    } catch (CRLException e) {
        throw e;
    } catch (Exception e) {
        throw new CRLException(e.toString());
    }
}

Example 19 with PushbackInputStream

use of java.io.PushbackInputStream in project OpenRefine by OpenRefine.

the class XmlImporter method wrapPrefixRemovingInputStream.

private static final InputStream wrapPrefixRemovingInputStream(InputStream inputStream) throws XMLStreamException, IOException {
    PushbackInputStream pis = new PushbackInputStream(inputStream);
    int b;
    int count = 0;
    while (count < 100 && (b = pis.read()) >= 0) {
        if (++count > 100) {
            throw new XMLStreamException("File starts with too much non-XML content to skip over");
        } else if (b == '<') {
            pis.unread(b);
            break;
        }
    }
    return pis;
}

Example 20 with PushbackInputStream

use of java.io.PushbackInputStream in project OpenRefine by OpenRefine.

the class ExcelImporter method createParserUIInitializationData.

@Override
public JSONObject createParserUIInitializationData(ImportingJob job, List<JSONObject> fileRecords, String format) {
    JSONObject options = super.createParserUIInitializationData(job, fileRecords, format);
    JSONArray sheetRecords = new JSONArray();
    JSONUtilities.safePut(options, "sheetRecords", sheetRecords);
    try {
        if (fileRecords.size() > 0) {
            JSONObject firstFileRecord = fileRecords.get(0);
            File file = ImportingUtilities.getFile(job, firstFileRecord);
            InputStream is = new FileInputStream(file);
            if (!is.markSupported()) {
                is = new PushbackInputStream(is, 8);
            }
            try {
                Workbook wb = POIXMLDocument.hasOOXMLHeader(is) ? new XSSFWorkbook(is) : new HSSFWorkbook(new POIFSFileSystem(is));
                int sheetCount = wb.getNumberOfSheets();
                boolean hasData = false;
                for (int i = 0; i < sheetCount; i++) {
                    Sheet sheet = wb.getSheetAt(i);
                    int rows = sheet.getLastRowNum() - sheet.getFirstRowNum() + 1;
                    JSONObject sheetRecord = new JSONObject();
                    JSONUtilities.safePut(sheetRecord, "name", sheet.getSheetName());
                    JSONUtilities.safePut(sheetRecord, "rows", rows);
                    if (hasData) {
                        JSONUtilities.safePut(sheetRecord, "selected", false);
                    } else if (rows > 1) {
                        JSONUtilities.safePut(sheetRecord, "selected", true);
                        hasData = true;
                    }
                    JSONUtilities.append(sheetRecords, sheetRecord);
                }
            } finally {
                is.close();
            }
        }
    } catch (IOException e) {
        logger.error("Error generating parser UI initialization data for Excel file", e);
    } catch (IllegalArgumentException e) {
        logger.error("Error generating parser UI initialization data for Excel file (only Excel 97 & later supported)", e);
    } catch (POIXMLException e) {
        logger.error("Error generating parser UI initialization data for Excel file - invalid XML", e);
    }
    return options;
}