Example usage for java.io FileReader read

Introduction

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

Prototype

public int read(java.nio.CharBuffer target) throws IOException 

Source Link

Document

Attempts to read characters into the specified character buffer.

Usage

From source file:kjscompiler.Settings.java

public Settings(String path) throws ParseException, FileNotFoundException, IOException {
    JSONParser parser = new JSONParser();
    File file = new File(path);
    String parent = file.exists() ? file.getParent() : null;
    File dir = new File(null == parent || parent.isEmpty() ? "." : parent);
    FileReader fr = new FileReader(file);
    char[] fileData = new char[(int) file.length()];
    fr.read(fileData);
    String content = new String(fileData);
    JSONObject obj = (JSONObject) parser.parse(content);
    if (obj.get("basedir") instanceof JSONArray) {
        this.baseDir = (JSONArray) obj.get("basedir");
    } else {// w  ww. ja  v  a  2s  .  c o m
        JSONArray arr = new JSONArray();
        arr.add(obj.get("basedir"));
        this.baseDir = arr;
    }
    this.output = (String) obj.get("output");
    this.level = (String) obj.get("level");
    this.pattern = (String) obj.get("pattern");
    this.wrapper = obj.get("wrapper") != null ? (String) obj.get("wrapper") : "";
    this.projectPath = dir.getCanonicalPath();

    dir = new File(this.projectPath, this.output);
    this.output = dir.getCanonicalPath();

    fr.close();
}

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From source file:tiled.plugins.json.JSONMapWriter.java

/**
 * this method write a map OR a tileset in json format
 *
 * @param map/*from w w  w . ja v  a  2 s.com*/
 * @param set
 * @param filename
 * @throws Exception
 */
private void writeMapOrTileset(Map map, TileSet set, String filename) throws Exception {

    // Create a temporary file
    File tempFile = File.createTempFile("tiled_json_", ".tmx");

    // Write in this temp file an xml content (tmx format)
    if (map != null) {
        super.writeMap(map, tempFile.getAbsolutePath());
    } else {
        if (set != null) {
            super.writeTileset(set, tempFile.getAbsolutePath()); //write in this temp file an xml content (tmx format)
        } else
            return;
    }

    tempFile = new File(tempFile.getAbsolutePath()); //TODO useful?

    // Now read this temp file and get the tmx content
    int fileSize = 100000; //TODO Replace here by true file size //(int) tempFile.length(); //100000;
    char[] TMXContent = new char[fileSize];

    FileReader fileR = new FileReader(tempFile.getAbsolutePath());
    fileR.read(TMXContent);
    fileR.close();

    // Avoid retrieving xml header like <?xml version=\"1.0\"?>, JSON parser doesn't like it!
    String TMXContentString = new String(TMXContent).trim().replaceFirst("\\<\\?.*\\?\\>", "");

    System.out.println("temp file path=" + tempFile.getAbsolutePath());
    System.out.println("filesize=" + fileSize);
    System.out.println("content=" + TMXContentString);

    // Delete useless temp file
    tempFile.delete();

    // Turn it into JSON format string
    String JSONContent = XML.toJSONObject(TMXContentString).toString(2);

    System.err.println("json content=" + JSONContent);

    // Write in destination file
    FileWriter fileW = new FileWriter(filename);
    fileW.write(JSONContent);
    fileW.flush();
    fileW.close();
}

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From source file:com.hiqes.android.demopermissionsm.ui.ProgLogFragment.java

public void doLoadFile(String filePath) {
    String errMsg;//from w ww.j  a  va 2  s  .  com
    Context ctx = getActivity();

    try {
        File inFile = new File(filePath);
        FileReader reader = new FileReader(inFile);
        char[] text = new char[(int) inFile.length()];
        int readCount = reader.read(text);
        if (readCount != inFile.length()) {
            errMsg = ctx.getString(R.string.warn_file_truncated);
            Toast.makeText(getActivity(), R.string.warn_file_truncated, Toast.LENGTH_LONG).show();
            Logger.w(TAG, errMsg);
        }

        Logger.d(TAG, "Read contents from log: " + inFile.getName());
        reader.close();
        mLoadedLog.setText(text, 0, readCount);
    } catch (FileNotFoundException e) {
        Logger.e(TAG, "Unable to open file: " + filePath);
        errMsg = ctx.getString(R.string.err_file_not_found);
        Toast.makeText(getActivity(), errMsg, Toast.LENGTH_LONG).show();
    } catch (IOException e) {
        Logger.e(TAG, "Failed to read saved file: " + e.getMessage());
        errMsg = ctx.getString(R.string.err_file_read);
        Toast.makeText(getActivity(), errMsg, Toast.LENGTH_LONG).show();
    }
}

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From source file:net.ytbolg.mcxa.MCLaucherXA.java

static String ReadFile(String path) throws FileNotFoundException, IOException {

    File file = new File(path);
    FileReader r = new FileReader(file);
    char c[] = new char[(int) file.length()];
    r.read(c);
    return String.valueOf(c);
}

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From source file:com.bt.aloha.testing.SimpleSipStackLogEnhancerTest.java

private String readTargetFile() throws IOException {
    FileReader fr = null;
    try {/*from   w  w  w . j  av  a 2s.  c  o  m*/
        char[] buff = new char[(int) tempTargetFile.length()];
        fr = new FileReader(tempTargetFile);
        fr.read(buff);
        String res = new String(buff);
        log.info("Read:\n" + res);
        return res;
    } finally {
        if (fr != null)
            fr.close();
    }
}

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From source file:org.apache.torque.generator.control.DeeplyNestedMergepointsTest.java

@Test
public void testDeeplyNestedMergepointsGeneration() throws Exception {
    File targetDir = new File("target/test/deeplyNestedMergepoints");
    FileUtils.deleteDirectory(targetDir);
    Controller controller = new Controller();
    List<UnitDescriptor> unitDescriptors = new ArrayList<UnitDescriptor>();
    CustomProjectPaths projectPaths = new CustomProjectPaths(
            new Maven2DirectoryProjectPaths(new File("src/test/deeplyNestedMergepoints")));
    projectPaths.setOutputDirectory(null, targetDir);
    unitDescriptors.add(new UnitDescriptor(UnitDescriptor.Packaging.DIRECTORY, projectPaths,
            new DefaultTorqueGeneratorPaths()));
    controller.run(unitDescriptors);/*www .j av  a  2s.  c om*/

    assertTrue(targetDir.exists());
    File targetFile = new File(targetDir, "output.txt");
    assertTrue(targetFile.exists());

    FileReader fileReader = new FileReader(targetFile);
    StringBuilder content = new StringBuilder();
    int readChars;
    char[] buffer = new char[50];
    do {
        readChars = fileReader.read(buffer);
        if (readChars != -1) {
            content.append(buffer, 0, readChars);
        }
    } while (readChars != -1);
    fileReader.close();
    assertEquals("content", content.toString());
}

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From source file:org.apache.sysml.utils.GenerateClassesForMLContext.java

/**
 * Obtain the content of a file as a string.
 * /*  w  w w  . j a va 2 s.c o m*/
 * @param filePath
 *            the path to a file
 * @return the file content as a string
 */
public static String fileToString(String filePath) {
    try {
        File f = new File(filePath);
        FileReader fr = new FileReader(f);
        StringBuilder sb = new StringBuilder();
        int n;
        char[] charArray = new char[1024];
        while ((n = fr.read(charArray)) > 0) {
            sb.append(charArray, 0, n);
        }
        fr.close();
        return sb.toString();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:main.server.SourceBrowserDataProvider.java

private String readFile(File file) throws IOException {
    StringBuffer buf = new StringBuffer();
    char[] a = new char[4096];
    FileReader r = null;
    try {//from w w  w . j  a va2s . co m
        r = new FileReader(file);
        for (;;) {
            int sz = r.read(a);
            if (sz < 0) {
                break;
            }
            buf.append(a, 0, sz);
        }
    } finally {
        if (r != null) {
            try {
                r.close();
            } catch (IOException e) {
                // ignore
            }
        }
    }
    return buf.toString();
}

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From source file:com.npower.unicom.sync.FileSyncItemWriter.java

public void close() throws IOException {
    this.writer.flush();
    this.writer.close();

    SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
    Writer out = new FileWriter(this.file);
    out.write("0001");
    out.write('\t');
    out.write("00000");
    out.write('\t');
    out.write(format.format(new Date()));
    out.write('\t');
    out.write("ZB");
    out.write('\t');

    String from = (fromDate != null) ? format.format(fromDate) : "19700101000000";
    String to = (toDate != null) ? format.format(toDate) : "19700101000000";

    out.write(from);/*from w  w  w  .  ja v a 2  s  . c o  m*/
    out.write('\t');
    out.write(to);
    out.write('\t');
    out.write(Integer.toString(this.totalRecords));
    out.write('\t');
    out.write('\n');
    // 
    FileReader in = new FileReader(this.bodyFile);
    char[] buf = new char[512];
    int len = in.read(buf);
    while (len > 0) {
        out.write(buf, 0, len);
        out.flush();
        len = in.read(buf);
    }
    in.close();
    out.close();
}

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From source file:org.apache.cassandra.tools.SSTableExportTest.java

@Test
public void testEnumeratekeys() throws IOException {
    File tempSS = createTemporarySSTable("Keyspace1", "Standard1");
    ColumnFamily cfamily = ColumnFamily.create("Keyspace1", "Standard1");
    IPartitioner<?> partitioner = DatabaseDescriptor.getPartitioner();
    DataOutputBuffer dob = new DataOutputBuffer();
    SSTableWriter writer = new SSTableWriter(tempSS.getPath(), 2, partitioner);

    // Add rowA//ww  w .  j  a  v a2 s  .c  o  m
    cfamily.addColumn(new QueryPath("Standard1", null, "colA".getBytes()), "valA".getBytes(), 1, false);
    ColumnFamily.serializer().serializeWithIndexes(cfamily, dob);
    writer.append(partitioner.decorateKey("rowA"), dob);
    dob.reset();
    cfamily.clear();

    // Add rowB
    cfamily.addColumn(new QueryPath("Standard1", null, "colB".getBytes()), "valB".getBytes(), 1, false);
    ColumnFamily.serializer().serializeWithIndexes(cfamily, dob);
    writer.append(partitioner.decorateKey("rowB"), dob);
    dob.reset();
    cfamily.clear();

    writer.closeAndOpenReader();

    // Enumerate and verify
    File temp = File.createTempFile("Standard1", ".txt");
    SSTableExport.enumeratekeys(writer.getFilename(), new PrintStream(temp.getPath()));

    FileReader file = new FileReader(temp);
    char[] buf = new char[(int) temp.length()];
    file.read(buf);
    String output = new String(buf);

    String sep = System.getProperty("line.separator");
    assert output.equals("rowA" + sep + "rowB" + sep) : output;
}

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