Example usage for java.io BufferedInputStream BufferedInputStream

Introduction

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

Prototype

public BufferedInputStream(InputStream in) 

Source Link

Document

Creates a BufferedInputStream and saves its argument, the input stream in, for later use.

Usage

From source file:eu.learnpad.simulator.mon.utils.Manager.java

@SuppressWarnings("deprecation")
public static Properties Read(String fileName) {
    Properties readedProps = new Properties();

    File file = new File(fileName);
    FileInputStream fis = null;//from   w w  w .  j ava  2  s . com
    BufferedInputStream bis = null;
    DataInputStream dis = null;

    try {
        fis = new FileInputStream(file);

        // Here BufferedInputStream is added for fast reading.
        bis = new BufferedInputStream(fis);
        dis = new DataInputStream(bis);

        // dis.available() returns 0 if the file does not have more lines.
        String property = "";
        String key = "";
        String value = "";

        while (dis.available() != 0) {
            // this statement reads the line from the file and print it to
            // the console.
            property = dis.readLine().trim();
            if (property.length() > 0) {
                key = property.substring(0, property.indexOf("="));
                value = property.substring(property.indexOf("=") + 1, property.length());

                readedProps.put(key.trim(), value.trim());
            }
        }

        // dispose all the resources after using them.
        fis.close();
        bis.close();
        dis.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return readedProps;
}

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From source file:org.jetbrains.webdemo.examples.ExamplesLoader.java

private static ExamplesFolder loadFolder(String path, String url, List<ObjectNode> parentCommonFiles,
        ExamplesFolder parentFolder) {/*  w  w  w  . java 2 s . c om*/
    File manifestFile = new File(path + File.separator + "manifest.json");
    try (BufferedInputStream reader = new BufferedInputStream(new FileInputStream(manifestFile))) {
        ObjectNode manifest = (ObjectNode) JsonUtils.getObjectMapper().readTree(reader);
        String name = new File(path).getName();
        List<ObjectNode> commonFiles = new ArrayList<>();
        commonFiles.addAll(parentCommonFiles);
        boolean taskFolder = manifest.has("taskFolder") ? manifest.get("taskFolder").asBoolean() : false;

        List<LevelInfo> levels = null;
        if (manifest.has("levels")) {
            levels = new ArrayList<>();
            for (JsonNode level : manifest.get("levels")) {
                levels.add(new LevelInfo(level.get("projectsNeeded").asInt(), level.get("color").asText()));
            }
        }

        if (parentFolder != null && parentFolder.isTaskFolder())
            taskFolder = true;
        ExamplesFolder folder = new ExamplesFolder(name, url, taskFolder, levels);
        if (manifest.has("files")) {
            for (JsonNode node : manifest.get("files")) {
                ObjectNode fileManifest = (ObjectNode) node;
                fileManifest.put("path", path + File.separator + fileManifest.get("filename").asText());
                commonFiles.add(fileManifest);
            }
        }

        if (manifest.has("folders")) {
            for (JsonNode node : manifest.get("folders")) {
                String folderName = node.textValue();
                folder.addChildFolder(loadFolder(path + File.separator + folderName, url + folderName + "/",
                        commonFiles, folder));
            }
        }

        if (manifest.has("examples")) {
            for (JsonNode node : manifest.get("examples")) {
                String projectName = node.textValue();
                String projectPath = path + File.separator + projectName;
                folder.addExample(loadExample(projectPath, url,
                        ApplicationSettings.LOAD_TEST_VERSION_OF_EXAMPLES, commonFiles));
            }
        }

        return folder;
    } catch (IOException e) {
        System.err.println("Can't load folder: " + e.toString());
        return null;
    }
}

---

From source file:Main.java

/** Downloads a file from the specified URL and stores the file to the specified location 
 * @param fileUrl the URL from which the file should be downloaded
 * @param storageLocation the location to which the downloaded file should be stored. If the file exists, it will
 * be overridden! /*from  www .ja v a  2 s  . c o  m*/
 * @throws IOException */
public static void downloadFileFromWebserver(String fileUrl, String storageLocation) throws IOException {
    URL url = new URL(fileUrl);
    File file = new File(storageLocation);

    URLConnection urlConnection = url.openConnection();
    InputStream inputStream = urlConnection.getInputStream();
    BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
    FileOutputStream fileOutputStream = new FileOutputStream(file);

    byte[] buffer = new byte[1024];
    int bytesInBuffer = 0;
    while ((bytesInBuffer = bufferedInputStream.read(buffer)) != -1) {
        fileOutputStream.write(buffer, 0, bytesInBuffer);
    }

    fileOutputStream.close();
}

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From source file:com.mebigfatguy.polycasso.URLFetcher.java

/**
 * retrieve arbitrary data found at a specific url
 * - either http or file urls/* ww w  .  j  a  v  a  2s.c o m*/
 * for http requests, sets the user-agent to mozilla to avoid
 * sites being cranky about a java sniffer
 * 
 * @param url the url to retrieve
 * @param proxyHost the host to use for the proxy
 * @param proxyPort the port to use for the proxy
 * @return a byte array of the content
 * 
 * @throws IOException the site fails to respond
 */
public static byte[] fetchURLData(String url, String proxyHost, int proxyPort) throws IOException {
    HttpURLConnection con = null;
    InputStream is = null;

    try {
        URL u = new URL(url);
        if (url.startsWith("file://")) {
            is = new BufferedInputStream(u.openStream());
        } else {
            Proxy proxy;
            if (proxyHost != null) {
                proxy = new Proxy(Type.HTTP, new InetSocketAddress(proxyHost, proxyPort));
            } else {
                proxy = Proxy.NO_PROXY;
            }
            con = (HttpURLConnection) u.openConnection(proxy);
            con.addRequestProperty("User-Agent",
                    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1092.0 Safari/536.6");
            con.addRequestProperty("Accept-Charset", "UTF-8");
            con.addRequestProperty("Accept-Language", "en-US,en");
            con.addRequestProperty("Accept", "text/html,image/*");
            con.setDoInput(true);
            con.setDoOutput(false);
            con.connect();

            is = new BufferedInputStream(con.getInputStream());
        }

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        IOUtils.copy(is, baos);
        return baos.toByteArray();
    } finally {
        IOUtils.closeQuietly(is);
        if (con != null) {
            con.disconnect();
        }
    }
}

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From source file:com.jcalvopinam.core.Zipping.java

private static void splitAndZipFile(File inputFile, int bufferSize, CustomFile customFile) throws IOException {

    int counter = 1;
    byte[] bufferPart;
    byte[] buffer = new byte[bufferSize];
    File newFile;//  w  ww .  ja  va2s .com
    FileInputStream fileInputStream;
    ZipOutputStream out;
    String temporalName;
    String outputFileName;

    try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(inputFile))) {

        int tmp;

        System.out.println("Please wait while the file is split:");
        while ((tmp = bis.read(buffer)) > 0) {
            temporalName = String.format("%s.%03d", customFile.getFileName(), counter);
            newFile = new File(inputFile.getParent(), temporalName);

            try (FileOutputStream fileOutputStream = new FileOutputStream(newFile)) {
                fileOutputStream.write(buffer, 0, tmp);
            }

            fileInputStream = new FileInputStream(newFile);//file001.zip
            outputFileName = String.format("%s%s_%03d%s", customFile.getPath(), customFile.getFileName(),
                    counter, Extensions.ZIP.getExtension());
            out = new ZipOutputStream(new FileOutputStream(outputFileName));

            out.putNextEntry(new ZipEntry(customFile.getFileNameExtension()));

            bufferPart = new byte[CustomFile.BYTE_SIZE];
            int count;

            while ((count = fileInputStream.read(bufferPart)) > 0) {
                out.write(bufferPart, 0, count);
                System.out.print(".");
            }

            counter++;
            fileInputStream.close();
            out.close();

            FileUtils.deleteQuietly(newFile);
        }
    }

    System.out.println("\nEnded process!");
}

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From source file:ca.simplegames.micro.utils.IO.java

/**
 * Copy the contents of the given input File to the given output File.
 *
 * @param in  the file to copy from//  w w  w .j a v a2s.com
 * @param out the file to copy to
 * @return the number of bytes copied
 * @throws java.io.IOException in case of I/O errors
 */
public static long copy(File in, File out) throws IOException {
    return copy(new BufferedInputStream(new FileInputStream(in)),
            new BufferedOutputStream(new FileOutputStream(out)));
}

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From source file:com.cyberway.issue.util.SurtPrefixSet.java

/**
 * Allow class to be used as a command-line tool for converting 
 * URL lists (or naked host or host/path fragments implied
 * to be HTTP URLs) to implied SURT prefix form. 
 * //w ww . j  a va 2s.c o m
 * Read from stdin or first file argument. Writes to stdout. 
 *
 * @param args cmd-line arguments: may include input file
 * @throws IOException
 */
public static void main(String[] args) throws IOException {
    InputStream in = args.length > 0 ? new BufferedInputStream(new FileInputStream(args[0])) : System.in;
    PrintStream out = args.length > 1 ? new PrintStream(new BufferedOutputStream(new FileOutputStream(args[1])))
            : System.out;
    BufferedReader br = new BufferedReader(new InputStreamReader(in));
    String line;
    while ((line = br.readLine()) != null) {
        if (line.indexOf("#") > 0)
            line = line.substring(0, line.indexOf("#"));
        line = line.trim();
        if (line.length() == 0)
            continue;
        out.println(prefixFromPlain(line));
    }
    br.close();
    out.close();
}

---

From source file:FileCopyUtils.java

/**
 * Copy the contents of the given input File to the given output File.
 * @param in the file to copy from//from   w ww . j a va  2s. c  o  m
 * @param out the file to copy to
 * @return the number of bytes copied
 * @throws IOException in case of I/O errors
 */
public static int copy(File in, File out) throws IOException {

    return copy(new BufferedInputStream(new FileInputStream(in)),
            new BufferedOutputStream(new FileOutputStream(out)));
}

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From source file:Main.java

public static String largeFileSha1(File file) {
    InputStream inputStream = null;
    try {/*from   w ww . j  av  a  2s .com*/
        MessageDigest gsha1 = MessageDigest.getInstance("SHA1");
        MessageDigest sha1 = MessageDigest.getInstance("SHA1");
        inputStream = new BufferedInputStream(new FileInputStream(file));
        byte[] buffer = new byte[1024];
        int nRead = 0;
        int block = 0;
        int count = 0;
        final int BLOCK_SIZE = 4 * 1024 * 1024;
        while ((nRead = inputStream.read(buffer)) != -1) {
            count += nRead;
            sha1.update(buffer, 0, nRead);
            if (BLOCK_SIZE == count) {
                gsha1.update(sha1.digest());
                sha1 = MessageDigest.getInstance("SHA1");
                block++;
                count = 0;
            }
        }
        if (count != 0) {
            gsha1.update(sha1.digest());
            block++;
        }
        byte[] digest = gsha1.digest();

        byte[] blockBytes = ByteBuffer.allocate(4).order(ByteOrder.LITTLE_ENDIAN).putInt(block).array();

        byte[] result = ByteBuffer.allocate(4 + digest.length).put(blockBytes, 0, blockBytes.length)
                .put(digest, 0, digest.length).array();

        return Base64.encodeToString(result, Base64.URL_SAFE | Base64.NO_WRAP);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (inputStream != null) {
            try {
                inputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return null;
}

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From source file:Main.java

/**
 * Do an HTTP POST and return the data as a byte array.
 *//*  w w w . j a  va  2 s  . co  m*/
public static byte[] executePost(String url, byte[] data, Map<String, String> requestProperties)
        throws MalformedURLException, IOException {
    HttpURLConnection urlConnection = null;
    try {
        urlConnection = (HttpURLConnection) new URL(url).openConnection();
        urlConnection.setRequestMethod("POST");
        urlConnection.setDoOutput(data != null);
        urlConnection.setDoInput(true);
        if (requestProperties != null) {
            for (Map.Entry<String, String> requestProperty : requestProperties.entrySet()) {
                urlConnection.setRequestProperty(requestProperty.getKey(), requestProperty.getValue());
            }
        }
        urlConnection.connect();
        if (data != null) {
            OutputStream out = new BufferedOutputStream(urlConnection.getOutputStream());
            out.write(data);
            out.close();
        }
        InputStream in = new BufferedInputStream(urlConnection.getInputStream());
        return convertInputStreamToByteArray(in);
    } catch (IOException e) {
        String details;
        if (urlConnection != null) {
            details = "; code=" + urlConnection.getResponseCode() + " (" + urlConnection.getResponseMessage()
                    + ")";
        } else {
            details = "";
        }
        Log.e("ExoplayerUtil", "executePost: Request failed" + details, e);
        throw e;
    } finally {
        if (urlConnection != null) {
            urlConnection.disconnect();
        }
    }
}

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