Example usage for java.io LineNumberReader LineNumberReader

Introduction

In this page you can find the example usage for java.io LineNumberReader LineNumberReader.

Prototype

public LineNumberReader(Reader in) 

Source Link

Document

Create a new line-numbering reader, using the default input-buffer size.

Usage

From source file:org.opencms.util.CmsRfsFileViewer.java

/**
 * Internally sets the member <code>m_windowPos</code> to the last available 
 * window of <code>m_windowSize</code> windows to let further calls to 
 * <code>{@link #readFilePortion()}</code> display the end of the file. <p> 
 * //from  w  ww. j  ava 2  s  .  co m
 * This method is triggered when a new file is chosen 
 * (<code>{@link #setFilePath(String)}</code>) because the amount of lines changes. 
 * This method is also triggered when a different window size is chosen 
 * (<code>{@link #setWindowSize(int)}</code>) because the amount of lines to display change. 
 * 
 * @return the amount of lines in the file to view
 */
private int scrollToFileEnd() {

    int lines = 0;
    if (OpenCms.getRunLevel() < OpenCms.RUNLEVEL_3_SHELL_ACCESS) {
        // no scrolling if system not yet fully initialized
    } else {
        LineNumberReader reader = null;
        // shift the window position to the end of the file: this is expensive but OK for ocs logfiles as they 
        // are ltd. to 2 MB
        try {
            reader = new LineNumberReader(
                    new BufferedReader(new InputStreamReader(new FileInputStream(m_filePath))));
            while (reader.readLine() != null) {
                lines++;
            }
            reader.close();
            // if 11.75 windows are available, we don't want to end on window nr. 10 
            int availWindows = (int) Math.ceil((double) lines / (double) m_windowSize);
            // we start with window 0
            m_windowPos = availWindows - 1;
        } catch (IOException ioex) {
            LOG.error("Unable to scroll file " + m_filePath + " to end. Ensure that it exists. ");
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (Throwable f) {
                    LOG.info("Unable to close reader of file " + m_filePath, f);
                }
            }
        }
    }
    return lines;
}

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From source file:org.opensha.commons.util.FileUtils.java

/**
 * Prints a Text file/*from   w w w  . j  a va2s.com*/
 * @param pjob PrintJob  created using getToolkit().getPrintJob(JFrame,String,Properties);
 * @param pg Graphics
 * @param textToPrint String
 */
public static void print(PrintJob pjob, Graphics pg, String textToPrint) {

    int margin = 60;

    int pageNum = 1;
    int linesForThisPage = 0;
    int linesForThisJob = 0;
    // Note: String is immutable so won't change while printing.
    if (!(pg instanceof PrintGraphics)) {
        throw new IllegalArgumentException("Graphics context not PrintGraphics");
    }
    StringReader sr = new StringReader(textToPrint);
    LineNumberReader lnr = new LineNumberReader(sr);
    String nextLine;
    int pageHeight = pjob.getPageDimension().height - margin;
    Font helv = new Font("Monaco", Font.PLAIN, 12);
    //have to set the font to get any output
    pg.setFont(helv);
    FontMetrics fm = pg.getFontMetrics(helv);
    int fontHeight = fm.getHeight();
    int fontDescent = fm.getDescent();
    int curHeight = margin;
    try {
        do {
            nextLine = lnr.readLine();
            if (nextLine != null) {
                if ((curHeight + fontHeight) > pageHeight) {
                    // New Page
                    if (linesForThisPage == 0)
                        break;

                    pageNum++;
                    linesForThisPage = 0;
                    pg.dispose();
                    pg = pjob.getGraphics();
                    if (pg != null) {
                        pg.setFont(helv);
                    }
                    curHeight = 0;
                }
                curHeight += fontHeight;
                if (pg != null) {
                    pg.drawString(nextLine, margin, curHeight - fontDescent);
                    linesForThisPage++;

                    linesForThisJob++;
                }
            }
        } while (nextLine != null);
    } catch (EOFException eof) {
        // Fine, ignore
    } catch (Throwable t) { // Anything else
        t.printStackTrace();
    }
}

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From source file:com.termmed.utils.FileHelper.java

/**
 * Copy to.//from   www  . j ava 2 s . c  o  m
 *
 * @param inputFile the input file
 * @param outputFile the output file
 * @throws IOException Signals that an I/O exception has occurred.
 */
public static void copyTo(File inputFile, File outputFile) throws IOException {

    FileInputStream fis = new FileInputStream(inputFile);
    InputStreamReader isr = new InputStreamReader(fis, "UTF-8");
    LineNumberReader reader = new LineNumberReader(isr);

    FileOutputStream fos = new FileOutputStream(outputFile);
    OutputStreamWriter osw = new OutputStreamWriter(fos, "UTF-8");
    BufferedWriter bw = new BufferedWriter(osw);

    String lineRead = "";
    while ((lineRead = reader.readLine()) != null) {
        bw.append(lineRead);
        bw.append("\r\n");
    }
    reader.close();
    bw.close();

}

---

From source file:Librarian.java

/**
 * Loads the library from a file/*from  w  ww  .  ja v  a2s .  co  m*/
 * 
 * @param filename
 *            the filename
 * @throws IOException
 */
public void load(String filename) throws IOException {
    BufferedReader in = new BufferedReader(new LineNumberReader(new FileReader(filename)));
    String line;
    while ((line = in.readLine()) != null) {
        StringTokenizer st = new StringTokenizer(line, SEP);
        Book book = null;
        if (st.hasMoreTokens())
            book = new Book(st.nextToken());
        if (st.hasMoreTokens())
            book.checkOut(st.nextToken());
        if (book != null)
            add(book);
    }
    in.close();
    this.filename = filename;
    dirty = false;
}

---

From source file:ca.nrc.cadc.sc2pkg.PackageIntTest.java

private Content getEntry(TarArchiveInputStream tar) throws IOException, NoSuchAlgorithmException {
    Content ret = new Content();

    TarArchiveEntry entry = tar.getNextTarEntry();
    ret.name = entry.getName();//from w  w w  .ja  va 2 s. com

    if (ret.name.endsWith("README")) {
        byte[] buf = new byte[(int) entry.getSize()];
        tar.read(buf);
        ByteArrayInputStream bis = new ByteArrayInputStream(buf);
        LineNumberReader r = new LineNumberReader(new InputStreamReader(bis));
        String line = r.readLine();
        while (line != null) {
            String[] tokens = line.split(" ");
            // status [md5 filename url]
            String status = tokens[0];
            if ("OK".equals(status)) {
                String fname = tokens[1];
                String md5 = tokens[2];
                ret.md5map.put(fname, md5);
            } else {
                throw new RuntimeException("tar content failure: " + line);
            }
            line = r.readLine();
        }
    } else {
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        byte[] buf = new byte[8192];
        int n = tar.read(buf);
        while (n > 0) {
            md5.update(buf, 0, n);
            n = tar.read(buf);
        }
        byte[] md5sum = md5.digest();
        ret.contentMD5 = HexUtil.toHex(md5sum);
    }

    return ret;
}

---

From source file:com.cisco.dvbu.ps.common.util.CommonUtils.java

/**
 * Find Lines Containing passed in match String from the passed in file
 * @param filePath file Path//from  w ww .  j a va 2  s  .  com
 * @param findMe find String
 * @return List of Matching Strings
 */
public static List<String> getLinesWithStringsInFile(String filePath, String findMe) {
    LineNumberReader lineReader = null;
    List<String> passwordLineList = null;
    try {
        lineReader = new LineNumberReader(new FileReader(filePath));
        String line = null;
        passwordLineList = new ArrayList<String>();
        while ((line = lineReader.readLine()) != null) {
            if (line.contains(findMe)) {
                passwordLineList.add(line);
            }
        }

    } catch (FileNotFoundException ex) {
        logger.error(ex.getMessage());
    } catch (IOException ex) {
        logger.error(ex.getMessage());
    } finally {
        try {
            if (lineReader != null)
                lineReader.close();
        } catch (IOException ex) {
            logger.error(ex.getMessage());
        }
    }
    return passwordLineList;
}

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From source file:org.apache.click.util.ErrorReport.java

/**
 * Return Java Source LineNumberReader for the given filename, or null if
 * not found.//w  w  w .jav  a  2s  .co  m
 *
 * @param filename the name of the Java source file, e.g. /examples/Page.java
 * @return LineNumberReader for the given source filename, or null if
 *      not found
 * @throws FileNotFoundException if file could not be found
 */
protected LineNumberReader getJavaSourceReader(String filename) throws FileNotFoundException {

    if (pageClass == null) {
        return null;
    }

    // Look for source file on classpath
    InputStream is = pageClass.getResourceAsStream(filename);
    if (is != null) {
        return new LineNumberReader(new InputStreamReader(is));
    }

    // Else search for source file under WEB-INF
    String rootPath = servletContext.getRealPath("/");

    String webInfPath = rootPath + File.separator + "WEB-INF";

    File sourceFile = null;

    File webInfDir = new File(webInfPath);
    if (webInfDir.isDirectory() && webInfDir.canRead()) {
        File[] dirList = webInfDir.listFiles();
        if (dirList != null) {
            for (File file : dirList) {
                if (file.isDirectory() && file.canRead()) {
                    String sourcePath = file.toString() + filename;
                    sourceFile = new File(sourcePath);
                    if (sourceFile.isFile() && sourceFile.canRead()) {

                        FileInputStream fis = new FileInputStream(sourceFile);
                        return new LineNumberReader(new InputStreamReader(fis));
                    }
                }
            }
        }
    }

    return null;
}

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From source file:org.beangle.struts2.action.EntityDrivenAction.java

/**
 * //from  www . j a v  a 2s.c  om
 * 
 * @param upload
 * @param clazz
 * @return
 */
protected EntityImporter buildEntityImporter(String upload, Class<?> clazz) {
    try {
        File file = get(upload, File.class);
        if (null == file) {
            logger.error("cannot get upload file {}.", upload);
            return null;
        }
        String fileName = get(upload + "FileName");
        InputStream is = new FileInputStream(file);
        if (fileName.endsWith(".xls")) {
            EntityImporter importer = (clazz == null) ? new DefaultEntityImporter()
                    : new DefaultEntityImporter(clazz);
            importer.setReader(new ExcelItemReader(is, 1));
            put("importer", importer);
            return importer;
        } else {
            LineNumberReader reader = new LineNumberReader(new InputStreamReader(is));
            if (null == reader.readLine()) {
                reader.close();
                return null;
            }
            reader.reset();
            EntityImporter importer = (clazz == null) ? new DefaultEntityImporter()
                    : new DefaultEntityImporter(clazz);
            importer.setReader(new CsvItemReader(reader));
            return importer;
        }
    } catch (MyException e) {
        logger.error("saveAndForwad failure", e);
        return null;
    } catch (Exception e) {
        logger.error("error", e);
        return null;
    }
}

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From source file:com.sds.acube.ndisc.mts.xserver.util.XNDiscUtils.java

/**
 * XNDisc ? ?//from   www . j av a2 s  . c o m
 */
private static void readVersionFromFile() {
    XNDisc_PublishingVersion = "<unknown>";
    XNDisc_PublishingDate = "<unknown>";
    InputStreamReader isr = null;
    LineNumberReader lnr = null;
    try {
        isr = new InputStreamReader(
                XNDiscUtils.class.getResourceAsStream("/com/sds/acube/ndisc/mts/xserver/version.txt"));
        if (isr != null) {
            lnr = new LineNumberReader(isr);
            String line = null;
            do {
                line = lnr.readLine();
                if (line != null) {
                    if (line.startsWith("Publishing-Version=")) {
                        XNDisc_PublishingVersion = line.substring("Publishing-Version=".length(), line.length())
                                .trim();
                    } else if (line.startsWith("Publishing-Date=")) {
                        XNDisc_PublishingDate = line.substring("Publishing-Date=".length(), line.length())
                                .trim();
                    }
                }
            } while (line != null);
            lnr.close();
        }
    } catch (IOException ioe) {
        XNDisc_PublishingVersion = "<unknown>";
        XNDisc_PublishingDate = "<unknown>";
    } finally {
        try {
            if (lnr != null) {
                lnr.close();
            }
            if (isr != null) {
                isr.close();
            }
        } catch (IOException ioe) {
        }
    }
}

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From source file:chatbot.Chatbot.java

/** ************************************************************************************************
 * Read a file of stopwords into the variable
 * ArrayList<String> stopwords//from   www .  ja va 2 s  .co  m
 */
private void readStopWords(String stopwordsFilename) throws IOException {

    String filename = "";
    if (asResource) {
        URL stopWordsFile = Resources.getResource("resources/stopwords.txt");
        filename = stopWordsFile.getPath();
    } else
        filename = stopwordsFilename;
    FileReader r = new FileReader(filename);
    LineNumberReader lr = new LineNumberReader(r);
    String line;
    while ((line = lr.readLine()) != null)
        stopwords.add(line.intern());
    return;
}

---

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