Example usage for java.io BufferedInputStream read

Introduction

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

Prototype

public synchronized int read(byte b[], int off, int len) throws IOException 

Source Link

Document

Reads bytes from this byte-input stream into the specified byte array, starting at the given offset.

Usage

From source file:Main.java

/**
 * Zips a file at a location and places the resulting zip file at the toLocation.
 * <p/>// w w  w .  ja v  a  2s.  c o m
 * Example:
 * zipFileAtPath("downloads/myfolder", "downloads/myFolder.zip");
 * <p/>
 * http://stackoverflow.com/a/14868161
 */
public static void zipFileAtPath(String sourcePath, String toLocation) throws IOException {
    final int BUFFER = 2048;

    File sourceFile = new File(sourcePath);
    FileOutputStream fos = new FileOutputStream(toLocation);
    ZipOutputStream zipOut = new ZipOutputStream(new BufferedOutputStream(fos));

    if (sourceFile.isDirectory()) {
        zipSubFolder(zipOut, sourceFile, sourceFile.getParent().length() + 1); // ??

    } else {
        byte data[] = new byte[BUFFER];
        FileInputStream fis = new FileInputStream(sourcePath);
        BufferedInputStream bis = new BufferedInputStream(fis, BUFFER);

        String lastPathComponent = sourcePath.substring(sourcePath.lastIndexOf("/"));

        ZipEntry zipEntry = new ZipEntry(lastPathComponent);
        zipOut.putNextEntry(zipEntry);

        int count;
        while ((count = bis.read(data, 0, BUFFER)) != -1) {
            zipOut.write(data, 0, count);
        }
    }

    zipOut.close();
}

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From source file:ImageUtils.java

final public static ImageProperties getJpegProperties(File file) throws FileNotFoundException, IOException {
    BufferedInputStream in = null;
    try {/*from w  w w .  j av  a2  s.  co  m*/
        in = new BufferedInputStream(new FileInputStream(file));

        // check for "magic" header
        byte[] buf = new byte[2];
        int count = in.read(buf, 0, 2);
        if (count < 2) {
            throw new RuntimeException("Not a valid Jpeg file!");
        }
        if ((buf[0]) != (byte) 0xFF || (buf[1]) != (byte) 0xD8) {
            throw new RuntimeException("Not a valid Jpeg file!");
        }

        int width = 0;
        int height = 0;
        char[] comment = null;

        boolean hasDims = false;
        boolean hasComment = false;
        int ch = 0;

        while (ch != 0xDA && !(hasDims && hasComment)) {
            /* Find next marker (JPEG markers begin with 0xFF) */
            while (ch != 0xFF) {
                ch = in.read();
            }
            /* JPEG markers can be padded with unlimited 0xFF's */
            while (ch == 0xFF) {
                ch = in.read();
            }
            /* Now, ch contains the value of the marker. */

            int length = 256 * in.read();
            length += in.read();
            if (length < 2) {
                throw new RuntimeException("Not a valid Jpeg file!");
            }
            /* Now, length contains the length of the marker. */

            if (ch >= 0xC0 && ch <= 0xC3) {
                in.read();
                height = 256 * in.read();
                height += in.read();
                width = 256 * in.read();
                width += in.read();
                for (int foo = 0; foo < length - 2 - 5; foo++) {
                    in.read();
                }
                hasDims = true;
            } else if (ch == 0xFE) {
                // that's the comment marker
                comment = new char[length - 2];
                for (int foo = 0; foo < length - 2; foo++)
                    comment[foo] = (char) in.read();
                hasComment = true;
            } else {
                // just skip marker
                for (int foo = 0; foo < length - 2; foo++) {
                    in.read();
                }
            }
        }
        return (new ImageProperties(width, height, comment, "jpeg"));

    } finally {
        if (in != null) {
            try {
                in.close();
            } catch (IOException e) {
            }
        }
    }
}

---

From source file:Main.java

public static byte[] readContentBytesFromFile(File fileForRead) {
    if (fileForRead == null) {
        return null;
    } else if (fileForRead.exists() && fileForRead.isFile()) {
        ReentrantReadWriteLock.ReadLock readLock = getLock(fileForRead.getAbsolutePath()).readLock();
        readLock.lock();/*from   w  ww.  j  a va  2 s .c  o  m*/
        Object data = null;
        BufferedInputStream input = null;

        try {
            byte[] data1 = new byte[(int) fileForRead.length()];
            int e = 0;
            input = new BufferedInputStream(new FileInputStream(fileForRead), 8192);

            while (e < data1.length) {
                int bytesRemaining = data1.length - e;
                int bytesRead = input.read(data1, e, bytesRemaining);
                if (bytesRead > 0) {
                    e += bytesRead;
                }
            }

            byte[] bytesRemaining1 = data1;
            return bytesRemaining1;
        } catch (IOException var10) {
        } finally {
            closeQuietly(input);
            readLock.unlock();
        }

        return null;
    } else {
        return null;
    }
}

---

From source file:Main.java

public static void unzipEPub(String inputZip, String destinationDirectory) throws IOException {
    int BUFFER = 2048;
    List zipFiles = new ArrayList();
    File sourceZipFile = new File(inputZip);
    File unzipDestinationDirectory = new File(destinationDirectory);
    unzipDestinationDirectory.mkdir();//from   w  w  w  . j  ava  2  s  .co m

    ZipFile zipFile;
    zipFile = new ZipFile(sourceZipFile, ZipFile.OPEN_READ);
    Enumeration zipFileEntries = zipFile.entries();

    // Process each entry
    while (zipFileEntries.hasMoreElements()) {

        ZipEntry entry = (ZipEntry) zipFileEntries.nextElement();
        String currentEntry = entry.getName();
        File destFile = new File(unzipDestinationDirectory, currentEntry);

        if (currentEntry.endsWith(".zip")) {
            zipFiles.add(destFile.getAbsolutePath());
        }

        File destinationParent = destFile.getParentFile();
        destinationParent.mkdirs();

        if (!entry.isDirectory()) {
            BufferedInputStream is = new BufferedInputStream(zipFile.getInputStream(entry));
            int currentByte;
            // buffer for writing file
            byte data[] = new byte[BUFFER];

            FileOutputStream fos = new FileOutputStream(destFile);
            BufferedOutputStream dest = new BufferedOutputStream(fos, BUFFER);

            while ((currentByte = is.read(data, 0, BUFFER)) != -1) {
                dest.write(data, 0, currentByte);
            }
            dest.flush();
            dest.close();
            is.close();

        }

    }
    zipFile.close();

    for (Iterator iter = zipFiles.iterator(); iter.hasNext();) {
        String zipName = (String) iter.next();
        unzipEPub(zipName,
                destinationDirectory + File.separatorChar + zipName.substring(0, zipName.lastIndexOf(".zip")));
    }
}

---

From source file:com.clov4r.moboplayer.android.nil.codec.SubtitleJni.java

private static String getFilecharset(File sourceFile) {
    if (!sourceFile.getAbsolutePath().endsWith("srt")) {
        return "UTF-8";
    }//from ww w.j  a v a2  s  .c  o  m
    String charset = "UTF-8";
    byte[] first3Bytes = new byte[3];
    try {
        boolean checked = false;
        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(sourceFile));
        bis.mark(0);
        int read = bis.read(first3Bytes, 0, 3);
        if (read == -1) {
            return charset;
        } else if (first3Bytes[0] == (byte) 0xFF && first3Bytes[1] == (byte) 0xFE) {
            charset = "UTF-16LE";
            checked = true;
        } else if (first3Bytes[0] == (byte) 0xFE && first3Bytes[1] == (byte) 0xFF) {
            charset = "UTF-16BE";
            checked = true;
        } else if (first3Bytes[0] == (byte) 0xEF && first3Bytes[1] == (byte) 0xBB
                && first3Bytes[2] == (byte) 0xBF) {
            charset = "UTF-8";
            checked = true;
        }
        // bis.reset();
        if (!checked) {
            int loc = 0;
            while ((read = bis.read()) != -1) {
                loc++;
                if (read >= 0xF0) {
                    charset = "GBK";
                    break;
                }
                if (0x80 <= read && read <= 0xBF) {
                    charset = "GBK";
                    break;
                }
                if (0xC0 <= read && read <= 0xDF) {
                    read = bis.read();
                    if (0x80 <= read && read <= 0xBF)
                        continue;
                    else {
                        charset = "GBK";
                        break;
                    }
                } else if (0xE0 <= read && read <= 0xEF) {
                    read = bis.read();
                    if (0x80 <= read && read <= 0xBF) {
                        read = bis.read();
                        if (0x80 <= read && read <= 0xBF) {
                            charset = "UTF-8";
                            break;
                        } else {
                            charset = "GBK";
                            break;
                        }
                    } else {
                        charset = "GBK";
                        break;
                    }
                }
            }
        }
        bis.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return charset;
}

---

From source file:com.dnielfe.manager.utils.SimpleUtils.java

/**
 * /* ww  w .j a va  2s. com*/
 * @param old
 *            the file to be copied/ moved
 * @param newDir
 *            the directory to copy/move the file to
 */
public static void copyToDirectory(String old, String newDir) {
    File old_file = new File(old);
    File temp_dir = new File(newDir);
    byte[] data = new byte[BUFFER];
    int read = 0;

    if (old_file.isFile() && temp_dir.isDirectory() && temp_dir.canWrite()) {
        String file_name = old.substring(old.lastIndexOf("/"), old.length());
        File cp_file = new File(newDir + file_name);

        try {
            BufferedOutputStream o_stream = new BufferedOutputStream(new FileOutputStream(cp_file));
            BufferedInputStream i_stream = new BufferedInputStream(new FileInputStream(old_file));

            while ((read = i_stream.read(data, 0, BUFFER)) != -1)
                o_stream.write(data, 0, read);

            o_stream.flush();
            i_stream.close();
            o_stream.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return;
        } catch (IOException e) {
            e.printStackTrace();
            return;
        }
    } else if (old_file.isDirectory() && temp_dir.isDirectory() && temp_dir.canWrite()) {
        String files[] = old_file.list();
        String dir = newDir + old.substring(old.lastIndexOf("/"), old.length());
        int len = files.length;

        if (!new File(dir).mkdir())
            return;

        for (int i = 0; i < len; i++)
            copyToDirectory(old + "/" + files[i], dir);

    } else if (old_file.isFile() && !temp_dir.canWrite() && SimpleExplorer.rootAccess) {
        RootCommands.moveCopyRoot(old, newDir);
    } else if (!temp_dir.canWrite())
        return;

    return;
}

---

From source file:riddimon.android.asianetautologin.HttpUtils.java

public static String readStreamIntoString(InputStream in) {
    StringBuilder builder = new StringBuilder();
    int buf_size = 50 * 1024; // read in chunks of 50 KB
    ByteArrayBuffer bab = new ByteArrayBuffer(buf_size);
    int read = 0;
    BufferedInputStream bis = new BufferedInputStream(in);
    if (bis != null) {
        byte buffer[] = new byte[buf_size];
        try {/* w w w . j  a  v  a  2 s .c om*/
            while ((read = bis.read(buffer, 0, buf_size)) != -1) {
                //builder.append(new String(buffer, "utf-8"));
                bab.append(buffer, 0, read);
            }
            builder.append(new String(bab.toByteArray(), "UTF-8"));
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                bis.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return builder.toString();
}

---

From source file:com.concursive.connect.web.modules.documents.beans.FileDownload.java

public static void send(OutputStream outputStream, InputStream is) throws Exception {
    BufferedInputStream inputStream = new BufferedInputStream(is);
    byte[] buf = new byte[4 * 1024];
    // 4K buffer//from  www .  jav  a 2  s  .  c  o m
    int len;
    while ((len = inputStream.read(buf, 0, buf.length)) != -1) {
        outputStream.write(buf, 0, len);
    }
    outputStream.flush();
    outputStream.close();
    inputStream.close();
}

---

From source file:com.bukanir.android.utils.Utils.java

public static void saveURL(String url, String filename) throws IOException {
    BufferedInputStream in = null;
    FileOutputStream fout = null;
    try {//from w  ww  .j a va  2s. co  m
        in = new BufferedInputStream(new URL(url).openStream());
        fout = new FileOutputStream(filename);

        int count;
        final byte data[] = new byte[1024];
        while ((count = in.read(data, 0, 1024)) != -1) {
            fout.write(data, 0, count);
        }
    } finally {
        if (in != null) {
            in.close();
        }
        if (fout != null) {
            fout.close();
        }
    }
}

---

From source file:org.openmrs.module.report.util.FileUtils.java

public static boolean copyFile(File source, File dest) {
    try {//  www  .  j  ava 2  s .  com
        BufferedInputStream in = new BufferedInputStream(new FileInputStream(source));
        BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(dest));
        byte[] data = new byte[2 * 1024];
        int count;
        while ((count = in.read(data, 0, data.length)) != -1) {
            out.write(data, 0, count);
        }
        out.flush();
        out.close();
        in.close();
        return true;
    } catch (FileNotFoundException e) {
        return false;
    } catch (IOException e) {
        return false;
    }
}

---

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