Example usage for java.io BufferedInputStream read

Introduction

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

Prototype

public int read(byte b[]) throws IOException

Source Link

Document

Reads up to b.length bytes of data from this input stream into an array of bytes.

Usage

From source file:com.amazonaws.services.simpleworkflow.flow.examples.deployment.DeploymentInitiator.java

public static String loadFile(String fileName) throws IOException {
    int length = (int) new File(fileName).length();
    byte[] buffer = new byte[length];
    BufferedInputStream is = null;
    try {// w w w.ja v a2s .  c  o m
        is = new BufferedInputStream(new FileInputStream(fileName));
        is.read(buffer);
    } finally {
        if (is != null) {
            is.close();
        }
    }
    return new String(buffer);
}

From source file:Main.java

/** Reads the specified file into a string
 * @param filePath the path to the file that should be read
 * @return the content of the specified file as a string or an empty string if the file does not exist 
 * @throws IOException *///w w  w.  j  a v  a2 s  .  co  m
public static String readFileAsString(String filePath) throws IOException {
    File file = new File(filePath);
    if (!file.exists()) {
        return "";
    }

    byte[] buffer = new byte[(int) new File(filePath).length()];

    BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream(filePath));
    bufferedInputStream.read(buffer);
    bufferedInputStream.close();

    return new String(buffer);
}

From source file:Main.java

public static void doCompressFile(String inFileName) {
    try {//w w w  . j  a  v  a2  s.co  m
        File file = new File(inFileName);
        FileOutputStream fos = new FileOutputStream(file + ".gz");
        GZIPOutputStream gzos = new GZIPOutputStream(fos);
        FileInputStream fin = new FileInputStream(file);
        BufferedInputStream in = new BufferedInputStream(fin);
        byte[] buffer = new byte[1024];
        int i;
        while ((i = in.read(buffer)) >= 0) {
            gzos.write(buffer, 0, i);
        }
        in.close();
        gzos.close();
    } catch (IOException e) {
        System.out.println("Exception is" + e);
    }
}

From source file:Main.java

public static void addEntryContent(ZipOutputStream zos, String entryFileName)
        throws IOException, FileNotFoundException {
    BufferedInputStream bis = new BufferedInputStream(new FileInputStream(entryFileName));

    byte[] buffer = new byte[1024];
    int count = -1;
    while ((count = bis.read(buffer)) != -1) {
        zos.write(buffer, 0, count);/*from  www .  j av a2 s.c  o  m*/
    }
    bis.close();
}

From source file:Util.java

public static byte[] readFile(File file) throws IOException {
    BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
    int bytes = (int) file.length();
    byte[] buffer = new byte[bytes];

    int readBytes = bis.read(buffer);
    bis.close();//from  w  w  w  .  j a v a  2  s . c  om
    return buffer;
}

From source file:Main.java

/**
 * extracts a zip file to the given dir/*from  w  w w.j av  a2s.co m*/
 * @param archive
 * @param destDir
 * @throws IOException 
 * @throws ZipException 
 * @throws Exception
 */
public static void extractZipArchive(File archive, File destDir) throws ZipException, IOException {
    if (!destDir.exists()) {
        destDir.mkdir();
    }

    ZipFile zipFile = new ZipFile(archive);
    Enumeration<? extends ZipEntry> entries = zipFile.entries();

    byte[] buffer = new byte[16384];
    int len;
    while (entries.hasMoreElements()) {
        ZipEntry entry = entries.nextElement();

        String entryFileName = entry.getName();

        File dir = buildDirectoryHierarchyFor(entryFileName, destDir);
        if (!dir.exists()) {
            dir.mkdirs();
        }

        if (!entry.isDirectory()) {
            BufferedOutputStream bos = new BufferedOutputStream(
                    new FileOutputStream(new File(destDir, entryFileName)));

            BufferedInputStream bis = new BufferedInputStream(zipFile.getInputStream(entry));

            while ((len = bis.read(buffer)) > 0) {
                bos.write(buffer, 0, len);
            }

            bos.flush();
            bos.close();
            bis.close();
        }
    }
}

From source file:Main.java

public static void saveISToFile(InputStream is, String fileName) throws IOException {
    File file = new File(fileName);
    file.getParentFile().mkdirs();/*w w w.  ja  va  2s . c om*/
    File tempFile = new File(fileName + ".tmp");
    FileOutputStream fos = new FileOutputStream(tempFile);
    BufferedOutputStream bos = new BufferedOutputStream(fos);
    BufferedInputStream bis = new BufferedInputStream(is);
    byte[] barr = new byte[32768];
    int read = 0;
    while ((read = bis.read(barr)) > 0) {
        bos.write(barr, 0, read);
    }
    bis.close();
    bos.flush();
    fos.flush();
    bos.close();
    fos.close();
    file.delete();
    tempFile.renameTo(file);
}

From source file:Main.java

private static Reader getUTF8Reader(InputStream f) throws IOException {
    BufferedInputStream bis = new BufferedInputStream(f);
    assert bis.markSupported();
    bis.mark(3);/*from w  ww .jav  a2s. com*/
    boolean reset = true;
    byte[] t = new byte[3];
    bis.read(t);
    if (t[0] == ((byte) 0xef) && t[1] == ((byte) 0xbb) && t[2] == ((byte) 0xbf)) {
        reset = false;
    }
    if (reset) {
        bis.reset();
    }
    return new InputStreamReader(bis, "UTF-8");
}

From source file:Main.java

public static void compressAFileToZip(File zip, File source) throws IOException {
    Log.d("source: " + source.getAbsolutePath(), ", length: " + source.length());
    Log.d("zip:", zip.getAbsolutePath());
    zip.getParentFile().mkdirs();/*ww  w. j  a v a2 s  .c  om*/
    File tempFile = new File(zip.getAbsolutePath() + ".tmp");
    FileOutputStream fos = new FileOutputStream(tempFile);
    BufferedOutputStream bos = new BufferedOutputStream(fos);
    ZipOutputStream zos = new ZipOutputStream(bos);
    ZipEntry zipEntry = new ZipEntry(source.getName());
    zipEntry.setTime(source.lastModified());
    zos.putNextEntry(zipEntry);

    FileInputStream fis = new FileInputStream(source);
    BufferedInputStream bis = new BufferedInputStream(fis);
    byte[] bArr = new byte[4096];
    int byteRead = 0;
    while ((byteRead = bis.read(bArr)) != -1) {
        zos.write(bArr, 0, byteRead);
    }
    zos.flush();
    zos.closeEntry();
    zos.close();
    Log.d("zipEntry: " + zipEntry, "compressedSize: " + zipEntry.getCompressedSize());
    bos.flush();
    fos.flush();
    bos.close();
    fos.close();
    bis.close();
    fis.close();
    zip.delete();
    tempFile.renameTo(zip);
}

From source file:Main.java

public static byte[] readFile(File file) throws IOException {
    int len = (int) file.length();
    if (len == 0) {
        return new byte[0];
    }/* ww w.  j  a v  a  2  s . c o  m*/

    byte[] data = null;
    BufferedInputStream bis = null;
    try {
        FileInputStream fis = new FileInputStream(file);
        bis = new BufferedInputStream(fis);
        data = new byte[len];
        bis.read(data);
    } finally {
        if (bis != null) {
            try {
                bis.close();
            } catch (IOException e) {
            }
        }
    }

    return data;
}