Example usage for java.io FileInputStream read

Introduction

In this page you can find the example usage for java.io FileInputStream 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.owncloud.android.utils.PushUtils.java

public static Key readKeyFromFile(boolean readPublicKey) {
    String keyPath = MainApp.getStoragePath() + File.separator + MainApp.getDataFolder() + File.separator
            + KEYPAIR_FOLDER;/*  w  w  w  . j  a  va 2  s.c  o m*/

    String privateKeyPath = keyPath + File.separator + KEYPAIR_FILE_NAME + KEYPAIR_PRIV_EXTENSION;
    String publicKeyPath = keyPath + File.separator + KEYPAIR_FILE_NAME + KEYPAIR_PUB_EXTENSION;

    String path;

    if (readPublicKey) {
        path = publicKeyPath;
    } else {
        path = privateKeyPath;
    }

    FileInputStream fileInputStream = null;
    try {
        fileInputStream = new FileInputStream(path);
        byte[] bytes = new byte[fileInputStream.available()];
        fileInputStream.read(bytes);
        fileInputStream.close();

        KeyFactory keyFactory = KeyFactory.getInstance("RSA");

        if (readPublicKey) {
            X509EncodedKeySpec keySpec = new X509EncodedKeySpec(bytes);
            return keyFactory.generatePublic(keySpec);
        } else {
            PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(bytes);
            return keyFactory.generatePrivate(keySpec);
        }

    } catch (FileNotFoundException e) {
        Log_OC.d(TAG, "Failed to find path while reading the Key");
    } catch (IOException e) {
        Log_OC.d(TAG, "IOException while reading the key");
    } catch (InvalidKeySpecException e) {
        Log_OC.d(TAG, "InvalidKeySpecException while reading the key");
    } catch (NoSuchAlgorithmException e) {
        Log_OC.d(TAG, "RSA algorithm not supported");
    }

    return null;
}

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From source file:com.pclinuxos.rpm.util.FileUtils.java

/**
 * The method copies a file to an other location. 
 * //  w  ww  .  j  ava2s .co m
 * @param source file/folder to copy
 * @param dest destination file/folder
 * @return 0 if copying was successfully, 1 if the source file/folder does not exist, 2 if a IOException
 * occurred while copying.
 */
public static byte cp(File source, File dest) {

    byte returnCode = 0;

    try {

        FileInputStream sourceIn = new FileInputStream(source);
        FileOutputStream destOut = new FileOutputStream(dest);

        if (!source.exists()) {

            returnCode = 1;
        }

        // 64kb buffer
        byte[] buffer = new byte[0xFFFF];

        while (sourceIn.read(buffer) != -1) {

            destOut.write(buffer);
        }

        sourceIn.close();
        destOut.flush();
        destOut.close();

    } catch (FileNotFoundException e) {

        returnCode = 1;

    } catch (IOException e) {

        returnCode = 2;
    }

    return returnCode;
}

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From source file:com.ecofactor.qa.automation.platform.util.FileUtil.java

/**
 * Adds the file to zip./*from w  w  w.  jav a  2s .c om*/
 * @param path the path
 * @param srcFile the src file
 * @param zip the zip
 */
private static void addFileToZip(final String path, final String srcFile, final ZipOutputStream zip) {

    try {
        final File folder = new File(srcFile);
        if (folder.isDirectory()) {
            addFolderToZip(path, srcFile, zip);
        } else {
            final byte[] buf = new byte[1024];
            int len;
            final FileInputStream inputStream = new FileInputStream(srcFile);
            zip.putNextEntry(
                    new ZipEntry(new StringBuilder(path).append(SLASH).append(folder.getName()).toString()));
            do {
                len = inputStream.read(buf);
                zip.write(buf, 0, len);
            } while (len > 0);
            inputStream.close();
        }
    } catch (IOException e) {
        LOGGER.error("Error in add flies to zip", e);
    }
}

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From source file:FileTools.java

/** copie le fichier source dans le fichier resultat
 * retourne vrai si cela russit/*from w  w  w . j  av a2s .  c  o m*/
 */
public static boolean copyFile(File source, File dest) {
    try {
        // Declaration et ouverture des flux
        java.io.FileInputStream sourceFile = new java.io.FileInputStream(source);

        try {
            java.io.FileOutputStream destinationFile = null;

            try {
                destinationFile = new FileOutputStream(dest);

                // Lecture par segment de 0.5Mo
                byte buffer[] = new byte[512 * 1024];
                int nbLecture;

                while ((nbLecture = sourceFile.read(buffer)) != -1) {
                    destinationFile.write(buffer, 0, nbLecture);
                }
            } finally {
                destinationFile.close();
            }
        } finally {
            sourceFile.close();
        }
    } catch (IOException e) {
        e.printStackTrace();
        return false; // Erreur
    }

    return true; // Rsultat OK
}

---

From source file:com.juancarlosroot.threads.SimulatedUser.java

public static void addToZipFile(String fileName, ZipOutputStream zos)
        throws FileNotFoundException, IOException {
    File file = new File(fileName);
    FileInputStream fis = new FileInputStream(file);
    ZipEntry zipEntry = new ZipEntry(fileName);
    zos.putNextEntry(zipEntry);/*from   w ww . j  a  v  a  2  s .  c o m*/

    byte[] bytes = new byte[2048];
    int length;
    while ((length = fis.read(bytes)) >= 0) {
        zos.write(bytes, 0, length);
    }

    zos.closeEntry();
    fis.close();
}

---

From source file:mtmo.test.mediadrm.Utils.java

public static byte[] readActionTokenFromFile(String path) {
    StringBuilder builder = new StringBuilder();
    FileInputStream fis = null;
    byte[] buff = new byte[1024];
    int ret = 0;// www .j av  a 2s.c  om
    File file = null;

    if (path.isEmpty()) {
        return null;
    }

    file = new File(path);
    if (!file.exists()) {
        return null;
    }

    try {
        fis = new FileInputStream(file);
        while ((ret = fis.read(buff)) > 0) {
            builder.append(new String(buff, 0, ret));
        }
    } catch (IOException e) {
        return null;
    } finally {
        if (fis != null) {
            try {
                fis.close();
            } catch (IOException e) {
            }
            fis = null;
        }
    }
    return builder.toString().getBytes();
}

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From source file:au.org.ands.vocabs.toolkit.utils.ToolkitFileUtils.java

/** Add a file to a ZIP archive.
 * @param zos The ZipOutputStream representing the ZIP archive.
 * @param file The File which is to be added to the ZIP archive.
 * @return True if adding succeeded./*w  w  w .  j  a  v a2s .co  m*/
 * @throws IOException Any exception when reading/writing data.
 */
private static boolean zipFile(final ZipOutputStream zos, final File file) throws IOException {
    if (!file.canRead()) {
        logger.error("zipFile can not read " + file.getCanonicalPath());
        return false;
    }
    zos.putNextEntry(new ZipEntry(file.getName()));
    FileInputStream fis = new FileInputStream(file);

    byte[] buffer = new byte[BUFFER_SIZE];
    int byteCount = 0;
    while ((byteCount = fis.read(buffer)) != -1) {
        zos.write(buffer, 0, byteCount);
    }
    fis.close();
    zos.closeEntry();
    return true;
}

---

From source file:Main.java

private static void addFileToZip(String sourceFolderPath, String sourceFilePath, String baseFolderPath,
        ZipOutputStream zos) throws Exception {

    File item = new File(sourceFilePath);
    if (item == null || !item.exists())
        return; //skip if the file is not exist
    if (isSymLink(item))
        return; // do nothing to symbolic links.

    if (baseFolderPath == null)
        baseFolderPath = "";

    if (item.isDirectory()) {
        for (String subItem : item.list()) {
            addFileToZip(sourceFolderPath + File.separator + item.getName(),
                    sourceFilePath + File.separator + subItem, baseFolderPath, zos);
        }//from  w  w w  .j  a  v a  2 s.  c  o m
    } else {
        byte[] buf = new byte[102400]; //100k buffer
        int len;
        FileInputStream inStream = new FileInputStream(sourceFilePath);
        if (baseFolderPath.equals("")) //sourceFiles in absolute path, zip the file with absolute path
            zos.putNextEntry(new ZipEntry(sourceFilePath));
        else {//relative path
            String relativePath = sourceFilePath.substring(baseFolderPath.length());
            zos.putNextEntry(new ZipEntry(relativePath));
        }

        while ((len = inStream.read(buf)) > 0) {
            zos.write(buf, 0, len);
        }

    }
}

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From source file:com.jaspersoft.studio.community.utils.CommunityAPIUtils.java

/**
 * Creates a ZIP file using the specified zip entries.
 * /*from   w ww  .  j a v  a2  s .c  om*/
 * @param zipEntries the list of entries that will end up in the final zip file
 * @return the zip file reference
 * @throws CommunityAPIException
 */
public static File createZipFile(List<ZipEntry> zipEntries) throws CommunityAPIException {
    String tmpDirectory = System.getProperty("java.io.tmpdir"); //$NON-NLS-1$
    String zipFileLocation = tmpDirectory;
    if (!(tmpDirectory.endsWith("/") || tmpDirectory.endsWith("\\"))) { //$NON-NLS-1$ //$NON-NLS-2$
        zipFileLocation += System.getProperty("file.separator"); //$NON-NLS-1$
    }
    zipFileLocation += "issueDetails.zip"; //$NON-NLS-1$

    try {
        // create byte buffer
        byte[] buffer = new byte[1024];
        // create object of FileOutputStream
        FileOutputStream fout = new FileOutputStream(zipFileLocation);
        // create object of ZipOutputStream from FileOutputStream
        ZipOutputStream zout = new ZipOutputStream(fout);

        for (ZipEntry ze : zipEntries) {
            //create object of FileInputStream for source file
            FileInputStream fin = new FileInputStream(ze.getLocation());
            zout.putNextEntry(new java.util.zip.ZipEntry(ze.getLocation()));
            // After creating entry in the zip file, actually write the file.
            int length;
            while ((length = fin.read(buffer)) > 0) {
                zout.write(buffer, 0, length);
            }
            //close the zip entry and related InputStream
            zout.closeEntry();
            fin.close();
        }
        //close the ZipOutputStream
        zout.close();
    } catch (IOException e) {
        throw new CommunityAPIException(Messages.CommunityAPIUtils_ZipCreationError, e);
    }
    return new File(zipFileLocation);
}

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From source file:br.com.manish.ahy.kernel.util.FileUtil.java

public static void copyFile(String from, String to, Boolean overwrite) {

    try {//  w  w w.  j  a  va  2  s  .  c om
        File fromFile = new File(from);
        File toFile = new File(to);

        if (!fromFile.exists()) {
            throw new IOException("File not found: " + from);
        }
        if (!fromFile.isFile()) {
            throw new IOException("Can't copy directories: " + from);
        }
        if (!fromFile.canRead()) {
            throw new IOException("Can't read file: " + from);
        }

        if (toFile.isDirectory()) {
            toFile = new File(toFile, fromFile.getName());
        }

        if (toFile.exists() && !overwrite) {
            throw new IOException("File already exists.");
        } else {
            String parent = toFile.getParent();
            if (parent == null) {
                parent = System.getProperty("user.dir");
            }
            File dir = new File(parent);
            if (!dir.exists()) {
                throw new IOException("Destination directory does not exist: " + parent);
            }
            if (dir.isFile()) {
                throw new IOException("Destination is not a valid directory: " + parent);
            }
            if (!dir.canWrite()) {
                throw new IOException("Can't write on destination: " + parent);
            }
        }

        FileInputStream fis = null;
        FileOutputStream fos = null;
        try {

            fis = new FileInputStream(fromFile);
            fos = new FileOutputStream(toFile);
            byte[] buffer = new byte[4096];
            int bytesRead;

            while ((bytesRead = fis.read(buffer)) != -1) {
                fos.write(buffer, 0, bytesRead);
            }

        } finally {
            if (from != null) {
                try {
                    fis.close();
                } catch (IOException e) {
                    log.error(e);
                }
            }
            if (to != null) {
                try {
                    fos.close();
                } catch (IOException e) {
                    log.error(e);
                }
            }
        }

    } catch (Exception e) {
        throw new OopsException(e, "Problems when copying file.");
    }
}

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