Examples of java.io.BufferedReader.mark()

java.io.BufferedReader.mark()
Set a Mark position in this BufferedReader. The parameter readLimit indicates how many characters can be read before a mark is invalidated. Sending reset() will reposition the reader back to the marked position provided readLimit has not been surpassed. @param readlimit an int representing how many characters must be read before invalidating the mark. @throws IOException If an error occurs attempting mark this BufferedReader. @throws IllegalArgumentException If readlimit is < 0

        try {
            Reader reader =
                new BufferedReader(new InputStreamReader(stream, encoding));


            // TIKA-240: Drop the BOM when extracting plain text
            reader.mark(1);
            int bom = reader.read();
            if (bom != '\ufeff') { // zero-width no-break space
                reader.reset();
            }

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        try {
            Reader reader =
                new BufferedReader(new InputStreamReader(stream, encoding));


            // TIKA-240: Drop the BOM when extracting plain text
            reader.mark(1);
            int bom = reader.read();
            if (bom != '\ufeff') { // zero-width no-break space
                reader.reset();
            }

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  public static void processSamples(String filename, Visualizer visualizer,
      ResultCollector resultCollector) throws IOException {
      BufferedReader dataReader = null;
    try {
      dataReader = new BufferedReader(new FileReader(filename));
      dataReader.mark(400);// Enough to read the header column names
      // Get the first line, and see if it is the header
      String line = dataReader.readLine();
      long lineNumber=1;
      SampleSaveConfiguration saveConfig = CSVSaveService.getSampleSaveConfiguration(line,filename);
      if (saveConfig == null) {// not a valid header

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        final boolean errorsOnly = resultCollector.isErrorLogging();
        final boolean successOnly = resultCollector.isSuccessOnlyLogging();
        try {
            dataReader = new BufferedReader(new InputStreamReader(
                    new FileInputStream(filename), SaveService.getFileEncoding("UTF-8"))); 
            dataReader.mark(400);// Enough to read the header column names
            // Get the first line, and see if it is the header
            String line = dataReader.readLine();
            if (line == null) {
                throw new IOException(filename + ": unable to read header line");
            }

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        final boolean errorsOnly = resultCollector.isErrorLogging();
        final boolean successOnly = resultCollector.isSuccessOnlyLogging();
        try {
            dataReader = new BufferedReader(new InputStreamReader(
                    new FileInputStream(filename), SaveService.getFileEncoding("UTF-8"))); 
            dataReader.mark(400);// Enough to read the header column names
            // Get the first line, and see if it is the header
            String line = dataReader.readLine();
            if (line == null) {
                throw new IOException(filename + ": unable to read header line");
            }

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        BufferedReader dataReader = null;
        final boolean errorsOnly = resultCollector.isErrorLogging();
        final boolean successOnly = resultCollector.isSuccessOnlyLogging();
        try {
            dataReader = new BufferedReader(new FileReader(filename)); // TODO Charset ?
            dataReader.mark(400);// Enough to read the header column names
            // Get the first line, and see if it is the header
            String line = dataReader.readLine();
            if (line == null) {
                throw new IOException(filename + ": unable to read header line");
            }

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        StringBuilder sb = new StringBuilder();
        final int MAX_SIZE = 1024 * 2;
        int c;
        boolean insideBlock = false;
        int read = 0;
        br.mark(MAX_SIZE);
        try {
            while ((c = br.read()) != -1) {
                read++;
                if (read > MAX_SIZE) {
                    break;

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        final boolean errorsOnly = resultCollector.isErrorLogging();
        final boolean successOnly = resultCollector.isSuccessOnlyLogging();
        try {
            dataReader = new BufferedReader(new InputStreamReader(
                    new FileInputStream(filename), SaveService.getFileEncoding("UTF-8"))); 
            dataReader.mark(400);// Enough to read the header column names
            // Get the first line, and see if it is the header
            String line = dataReader.readLine();
            if (line == null) {
                throw new IOException(filename + ": unable to read header line");
            }

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            } else if (!(fileEntry.inputOutputObject instanceof Reader)) {
                throw new IOException("File " + alias + " already in use");
            } else {
                reader = (BufferedReader) fileEntry.inputOutputObject;
                if (recycle) { // need to check if we are at EOF already
                    reader.mark(1);
                    int peek = reader.read();
                    if (peek == -1) { // already at EOF
                        reader.close();
                        reader = createBufferedReader(fileEntry);
                        fileEntry.inputOutputObject = reader;

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      chars[i] = (char) i;
    Reader in = new BufferedReader(new Support_StringReader(new String(
        chars)), 12);


    in.skip(6);
    in.mark(14);
    in.read(new char[14], 0, 14);
    in.reset();
    assertTrue("Wrong chars", in.read() == (char) 6
        && in.read() == (char) 7);

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