Example usage for java.io Reader read

List of usage examples for java.io Reader read

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Introduction

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

Prototype

public int read() throws IOException

Source Link

Document

Reads a single character.

Usage

From source file:gov.nih.nci.ncicb.tcga.dcc.dam.processors.DataAccessMatrixQueriesMockImpl.java

public void addPathsToSelectedFiles(List<DataFile> selectedFiles) throws DAMQueriesException {
    //boolean ret = true;
    Reader in = null;
    Writer out = null;/* w  w  w  .j a v  a  2 s . com*/
    try {
        for (DataFile fileInfo : selectedFiles) {
            //noinspection IOResourceOpenedButNotSafelyClosed
            in = new BufferedReader(new FileReader(testDownloadFile));
            String fname = dataFilePath + fileInfo.getFileId() + ".idat";
            File f = new File(fname);
            if (f.exists()) {
                f.delete();
            }
            //noinspection IOResourceOpenedButNotSafelyClosed
            out = new BufferedWriter(new FileWriter(fname));
            int c;
            while ((c = in.read()) != -1) {
                out.write(c);
            }
            out.flush();
            out.close();
            in.close();
            System.out.println("wrote file " + fname);
            fileInfo.setPath(fname);
            fname = fname.replace('\\', '/');
            fname = fname.substring(fname.lastIndexOf('/') + 1);
            fileInfo.setFileName(fname);
        }
    } catch (Exception ex) {
        ex.printStackTrace();
        //all or nothing
        for (DataFile fileInfo : selectedFiles) {
            fileInfo.setPath(null);
        }
        //ret = false;
        throw new DAMQueriesException(ex);
    } finally {
        IOUtils.closeQuietly(in);
        IOUtils.closeQuietly(out);
    }
    //return ret;
}

From source file:com.streamsets.datacollector.json.JsonObjectReaderImpl.java

public JsonObjectReaderImpl(Reader reader, long initialPosition, Mode mode, Class<?> objectClass,
        ObjectMapper objectMapper) throws IOException {
    this.mode = mode;
    this.objectClass = objectClass;
    this.objectMapper = objectMapper;

    starting = true;//from w ww.  j  a v  a  2  s  .c om
    this.reader = reader;
    if (mode == Mode.MULTIPLE_OBJECTS) {
        if (initialPosition > 0) {
            IOUtils.skipFully(reader, initialPosition);
            posCorrection += initialPosition;
        }
        if (reader.markSupported()) {
            reader.mark(MAX_CHARS_TO_READ_FORWARD);
            int count = 0;
            byte firstByte = -1;
            while (count++ < MAX_CHARS_TO_READ_FORWARD && (firstByte = (byte) reader.read()) != -1
                    && firstByte <= ' ')
                ; // everything less than a space is whitespace
            if (firstByte > ' ') {
                firstNonSpaceChar = firstByte;
            }
            reader.reset();
        }
    }
    jsonParser = getObjectMapper().getFactory().createParser(reader);
    if (mode == Mode.ARRAY_OBJECTS && initialPosition > 0) {
        fastForwardJsonParser(initialPosition);
    }
}

From source file:au.org.ala.delta.directives.DirectiveParser.java

@SuppressWarnings("unchecked")
protected void doParse(Reader reader, C context, ParsingContext pc) throws IOException, DirectiveException {

    StringBuilder currentData = new StringBuilder();
    int prev = ' ';
    pc.setCurrentLine(1);/*from  w  w  w. j a v  a2s .  c o m*/
    StringBuilder line = new StringBuilder();
    StringBuilder directiveText = new StringBuilder();
    pc.setCurrentDirectiveText(directiveText);
    StringBuilder currentWord = new StringBuilder();
    List<String> currentWords = new ArrayList<String>();

    AbstractDirective<C> currentDirective = null;
    boolean foundDirectiveDelimiter = false;

    int ch = reader.read();

    while (ch >= 0) {
        if (ch == DIRECTIVE_DELIMITER && _blank.indexOf(prev) >= 0) {

            // First test to see if this text is delimited...
            if (currentDirective != null && isDelimited(currentDirective, currentData)) {
                currentData.append((char) ch);
            } else {
                // Finish off any existing directive
                if (currentDirective != null) {
                    executeDirective(currentDirective, currentData.toString(), context);
                } else if (!currentWords.isEmpty()) {
                    handleUnrecognizedDirective(context, currentWords);
                }

                directiveText.setLength(0);
                foundDirectiveDelimiter = true;
                // Start a potentially new directive
                currentWords.clear();
                currentWord = new StringBuilder();
                currentData = new StringBuilder();
                currentDirective = null;
                pc.setCurrentDirectiveStartLine(pc.getCurrentLine());
                long offset = pc.getCurrentOffset() - 1;
                pc.setCurrentDirectiveStartOffset(offset < 0 ? 0 : offset);
            }
        } else if (_blank.indexOf(ch) >= 0 && currentDirective == null && foundDirectiveDelimiter) {
            if (currentWord.length() > 0) {
                currentWords.add(currentWord.toString());
                currentData.append((char) ch);
                currentWord = new StringBuilder();
                DirectiveSearchResult result = _registry.findDirective(currentWords);
                if (result.getResultType() == ResultType.Found) {
                    currentData = new StringBuilder();
                    pc.markDirectiveEnd();
                    currentDirective = (AbstractDirective<C>) result.getMatches().get(0);
                }
            }
        } else {
            currentWord.append((char) ch);
            currentData.append((char) ch);
        }
        line.append((char) ch);
        prev = ch;
        ch = reader.read();

        // Handle end of line if the previous character was a newline, or
        // there are no more characters to read
        boolean endOfLine = (prev == '\n' || ch < 0);
        updateParsingContext(pc, line, directiveText, endOfLine);
    }

    if (currentDirective != null) {
        executeDirective(currentDirective, currentData.toString(), context);
    } else {
        if (currentData.length() > 0) {
            processTrailing(currentData, context);
        }
    }

    Logger.log("Finished!");
    context.endCurrentParsingContext();
}

From source file:BayesianAnalyzer.java

private String nextToken(Reader reader) throws java.io.IOException {
    StringBuffer token = new StringBuffer();
    int i;//from ww  w . j  a  v  a2 s .c o  m
    char ch, ch2;
    boolean previousWasDigit = false;
    boolean tokenCharFound = false;

    if (!reader.ready()) {
        return null;
    }

    while ((i = reader.read()) != -1) {

        ch = (char) i;

        if (ch == ':') {
            String tokenString = token.toString() + ':';
            if (tokenString.equals("From:") || tokenString.equals("Return-Path:")
                    || tokenString.equals("Subject:") || tokenString.equals("To:")) {
                return tokenString;
            }
        }

        if (Character.isLetter(ch) || ch == '-' || ch == '$' || ch == '\u20AC' // the EURO symbol
                || ch == '!' || ch == '\'') {
            tokenCharFound = true;
            previousWasDigit = false;
            token.append(ch);
        } else if (Character.isDigit(ch)) {
            tokenCharFound = true;
            previousWasDigit = true;
            token.append(ch);
        } else if (previousWasDigit && (ch == '.' || ch == ',')) {
            reader.mark(1);
            previousWasDigit = false;
            i = reader.read();
            if (i == -1) {
                break;
            }
            ch2 = (char) i;
            if (Character.isDigit(ch2)) {
                tokenCharFound = true;
                previousWasDigit = true;
                token.append(ch);
                token.append(ch2);
            } else {
                reader.reset();
                break;
            }
        } else if (ch == '\r') {
            // cr found, ignore
        } else if (ch == '\n') {
            // eol found
            tokenCharFound = true;
            previousWasDigit = false;
            token.append(ch);
            break;
        } else if (tokenCharFound) {
            break;
        }
    }

    if (tokenCharFound) {
        //          System.out.println("Token read: " + token);
        return token.toString();
    } else {
        return null;
    }
}

From source file:net.sf.jabref.openoffice.OOBibStyle.java

private void readFormatFile(Reader in) throws IOException {

    // First read all the contents of the file:
    StringBuilder sb = new StringBuilder();
    int c;//from  www.  j  ava  2 s.c o m
    while ((c = in.read()) != -1) {
        sb.append((char) c);
    }
    // Break into separate lines:
    String[] lines = sb.toString().split("\n");
    int mode = OOBibStyle.MODE_NONE;

    for (String line1 : lines) {
        String line = line1;
        if (!line.isEmpty() && (line.charAt(line.length() - 1) == '\r')) {
            line = line.substring(0, line.length() - 1);
        }
        // Check for empty line or comment:
        if (line.trim().isEmpty() || (line.charAt(0) == '#')) {
            continue;
        }
        // Check if we should change mode:
        if (line.equals(OOBibStyle.NAME_MARK)) {
            mode = OOBibStyle.MODE_NAME;
            continue;
        } else if (line.equals(OOBibStyle.LAYOUT_MRK)) {
            mode = OOBibStyle.MODE_LAYOUT;
            continue;
        } else if (line.equals(OOBibStyle.PROPERTIES_MARK)) {
            mode = OOBibStyle.MODE_PROPERTIES;
            continue;
        } else if (line.equals(OOBibStyle.CITATION_MARK)) {
            mode = OOBibStyle.MODE_CITATION;
            continue;
        } else if (line.equals(OOBibStyle.JOURNALS_MARK)) {
            mode = OOBibStyle.MODE_JOURNALS;
            continue;
        }

        switch (mode) {
        case MODE_NAME:
            if (!line.trim().isEmpty()) {
                name = line.trim();
            }
            break;
        case MODE_LAYOUT:
            handleStructureLine(line);
            break;
        case MODE_PROPERTIES:
            handlePropertiesLine(line, properties);
            break;
        case MODE_CITATION:
            handlePropertiesLine(line, citProperties);
            break;
        case MODE_JOURNALS:
            handleJournalsLine(line);
            break;
        default:
            break;
        }

    }

    // Set validity boolean based on whether we found anything interesting
    // in the file:
    if (mode != OOBibStyle.MODE_NONE) {
        valid = true;
    }

}

From source file:de.micromata.genome.gwiki.page.gspt.ExtendedTemplate.java

/**
 * Parses the to elements.// w w w  . j  a v a 2s  .  c  om
 *
 * @param reader the reader
 * @return the list
 * @throws IOException Signals that an I/O exception has occurred.
 */
protected List<ParseElement> parseToElements(Reader reader) throws IOException {
    if (!reader.markSupported()) {
        reader = new BufferedReader(reader);
    }
    // StringWriter sw = new StringWriter();
    List<ParseElement> elements = new ArrayList<ParseElement>();
    startScript(elements);
    // boolean start = false;
    int c;
    while ((c = reader.read()) != -1) {
        if (c == '<') {
            reader.mark(1);
            c = reader.read();
            if (c != '%') {
                // sw.write('<');
                elements.add(new ParseElement(Type.ConstString, "<"));
                reader.reset();
            } else {
                reader.mark(1);
                c = reader.read();
                if (c == '=') {
                    groovyExpression(reader, elements);
                } else if (c == '-') {
                    reader.read();
                    groovyComment(reader, elements);
                } else if (c == '#') {
                    groovySection(Type.GlobalCode, reader, elements);
                } else if (c == '!') {
                    groovySection(Type.ClassCode, reader, elements);
                } else {
                    reader.reset();
                    groovySection(Type.Statement, reader, elements);
                }
            }
            continue; // at least '<' is consumed ... read next chars.
        } else if (c == '-') {
            reader.mark(4);
            if (reader.read() == '-' && reader.read() == '%' && reader.read() == '>') {
                /**
                 * @logging
                 * @reason Innerhalb einer GSPT-Datei ist ein Kommentarendesequenz ohne oeffnendes
                 * @action GSPT korrigieren
                 */
                GWikiLog.warn("In gspt --%> comment without open");
            }
            reader.reset();
        }
        if (elements.size() == 0 || elements.get(elements.size() - 1).type != Type.ConstString)
            elements.add(new ParseElement(Type.ConstString, ""));
        elements.get(elements.size() - 1).text.append((char) c);

    }
    return elements;
}

From source file:net.sf.jabref.logic.openoffice.OOBibStyle.java

private void readFormatFile(Reader in) throws IOException {

    // First read all the contents of the file:
    StringBuilder sb = new StringBuilder();
    int c;//from   www.  j a v a 2s  . com
    while ((c = in.read()) != -1) {
        sb.append((char) c);
    }

    // Store a local copy for viewing
    localCopy = sb.toString();

    // Break into separate lines:
    String[] lines = sb.toString().split("\n");
    BibStyleMode mode = BibStyleMode.NONE;

    for (String line1 : lines) {
        String line = line1;
        if (!line.isEmpty() && (line.charAt(line.length() - 1) == '\r')) {
            line = line.substring(0, line.length() - 1);
        }
        // Check for empty line or comment:
        if (line.trim().isEmpty() || (line.charAt(0) == '#')) {
            continue;
        }
        // Check if we should change mode:
        switch (line) {
        case NAME_MARK:
            mode = BibStyleMode.NAME;
            continue;
        case LAYOUT_MRK:
            mode = BibStyleMode.LAYOUT;
            continue;
        case PROPERTIES_MARK:
            mode = BibStyleMode.PROPERTIES;
            continue;
        case CITATION_MARK:
            mode = BibStyleMode.CITATION;
            continue;
        case JOURNALS_MARK:
            mode = BibStyleMode.JOURNALS;
            continue;
        default:
            break;

        }

        switch (mode) {
        case NAME:
            if (!line.trim().isEmpty()) {
                name = line.trim();
            }
            break;
        case LAYOUT:
            handleStructureLine(line);
            break;
        case PROPERTIES:
            handlePropertiesLine(line, properties);
            break;
        case CITATION:
            handlePropertiesLine(line, citProperties);
            break;
        case JOURNALS:
            handleJournalsLine(line);
            break;
        default:
            break;
        }

    }

    // Set validity boolean based on whether we found anything interesting
    // in the file:
    if (mode != BibStyleMode.NONE) {
        valid = true;
    }

}