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:eu.scape_project.bitwiser.utils.SSDeep.java

static boolean ssUpdate(ss_context ctx, File handle) throws IOException {
    int bytesRead = 0;
    byte[] buffer;

    if (null == ctx || null == handle) {
        return true;
    }//  ww w.  j a  va2  s .c o m

    buffer = new byte[BUFFER_SIZE];

    ctx.ret.blocksize = ctx.block_size;
    // ctx.p = ctx.ret + strlen(ctx.ret)  
    ctx.p = new char[SPAMSUM_LENGTH];

    //memset(ctx.p, 0, SPAMSUM_LENGTH+1)
    Arrays.fill(ctx.p, (char) 0);
    //memset(ctx.ret2, 0, sizeof(ctx.ret2.length))
    Arrays.fill(ctx.ret2, (char) 0);

    ctx.k = ctx.j = 0;
    ctx.h3 = ctx.h2 = HASH_INIT;
    ctx.h = 0;
    rollReset();

    FileInputStream in = new FileInputStream(handle);
    // while ((bytes_read = fread(buffer,sizeof(byte),BUFFER_SIZE,handle)) > 0)
    while (in.available() > 0) {
        bytesRead = in.read(buffer);
        ssEngine(ctx, buffer, bytesRead);
    }
    in.close();

    if (ctx.h != 0) {
        ctx.p[ctx.j] = b64[(int) ((ctx.h2 & 0xFFFF) % 64)];
        ctx.ret2[ctx.k] = b64[(int) ((ctx.h3 & 0xFFFF) % 64)];
    }

    ctx.ret.hash = new String(ctx.p);
    ctx.ret.hash2 = new String(ctx.ret2);

    return false;
}

---

From source file:edu.uci.ics.asterix.event.service.AsterixEventServiceUtil.java

private static void zipDir(File sourceDir, final File destFile, ZipOutputStream zos) throws IOException {
    File[] dirList = sourceDir.listFiles(new FileFilter() {
        public boolean accept(File f) {
            return !f.getName().endsWith(destFile.getName());
        }//w  w w  . j a v  a  2s.  c o m
    });
    for (int i = 0; i < dirList.length; i++) {
        File f = dirList[i];
        if (f.isDirectory()) {
            zipDir(f, destFile, zos);
        } else {
            int bytesIn = 0;
            byte[] readBuffer = new byte[2156];
            FileInputStream fis = new FileInputStream(f);
            ZipEntry entry = new ZipEntry(sourceDir.getName() + File.separator + f.getName());
            zos.putNextEntry(entry);
            while ((bytesIn = fis.read(readBuffer)) != -1) {
                zos.write(readBuffer, 0, bytesIn);
            }
            fis.close();
        }
    }
}

---

From source file:morphy.utils.FileUtils.java

/**
 * This code was obtained from:/*from   w  w  w  .j  a v  a2  s  .  c  o m*/
 * http://www.dreamincode.net/code/snippet1443.htm
 * 
 * This function will copy files or directories from one location to
 * another. note that the source and the destination must be mutually
 * exclusive. This function can not be used to copy a directory to a sub
 * directory of itself. The function will also have problems if the
 * destination files already exist.
 * 
 * @param src
 *            -- A File object that represents the source for the copy
 * @param dest
 *            -- A File object that represents the destination for the copy.
 * @throws IOException
 *             if unable to copy.
 */
public static void copyFiles(File src, File dest) throws IOException {
    if (src.getName().startsWith(".")) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Ignoring " + src.getAbsolutePath() + " because name started with .");
        }
        return;
    }

    // Check to ensure that the source is valid...
    if (!src.exists()) {
        throw new IOException("copyFiles: Can not find source: " + src.getAbsolutePath() + ".");

    } else if (!src.canRead()) { // check to ensure we have rights to the
        // source...
        throw new IOException("copyFiles: No right to source: " + src.getAbsolutePath() + ".");
    }

    // is this a directory copy?

    if (src.isDirectory()) {
        if (!dest.exists()) { // does the destination already exist?
            // if not we need to make it exist if possible (note this is
            // mkdirs not mkdir)

            if (!dest.mkdirs()) {
                throw new IOException("copyFiles: Could not create direcotry: " + dest.getAbsolutePath() + ".");
            }
            if (LOG.isDebugEnabled()) {
                LOG.debug("Created directory " + dest.getAbsolutePath());
            }
        }
        // get a listing of files...

        String list[] = src.list();

        // copy all the files in the list.
        for (String element : list) {
            File dest1 = new File(dest, element);
            File src1 = new File(src, element);
            copyFiles(src1, dest1);
        }

    } else {
        // This was not a directory, so lets just copy the file

        FileInputStream fin = null;
        FileOutputStream fout = null;
        byte[] buffer = new byte[4096]; // Buffer 4K at a time (you can
        // change this).
        int bytesRead;

        try {

            // open the files for input and output

            fin = new FileInputStream(src);
            fout = new FileOutputStream(dest);

            // while bytesRead indicates a successful read, lets write...

            while ((bytesRead = fin.read(buffer)) >= 0) {

                fout.write(buffer, 0, bytesRead);
            }
            if (LOG.isDebugEnabled()) {
                LOG.debug("Copied " + src.getAbsolutePath() + " to " + dest.getAbsolutePath());
            }

        } catch (IOException e) { // Error copying file...

            IOException wrapper = new IOException("copyFiles: Unable to copy file: " +

                    src.getAbsolutePath() + "to" + dest.getAbsolutePath() + ".");

            wrapper.initCause(e);
            wrapper.setStackTrace(e.getStackTrace());
            throw wrapper;

        } finally { // Ensure that the files are closed (if they were open).

            if (fin != null) {
                try {
                    fin.close();
                } catch (Throwable t) {
                }
            }

            if (fout != null) {
                try {
                    fout.close();
                } catch (Throwable t) {
                }
            }
        }
    }
}

---

From source file:net.duckling.ddl.util.FileUtil.java

public static void copyFolder(String oldPath, String newPath) {

    try {//from  ww  w.  ja  v  a 2 s .  c  om
        (new File(newPath)).mkdirs();
        File a = new File(oldPath);
        String[] file = a.list();
        File temp = null;
        for (int i = 0; i < file.length; i++) {
            if (oldPath.endsWith(File.separator)) {
                temp = new File(oldPath + file[i]);
            } else {
                temp = new File(oldPath + File.separator + file[i]);
            }
            if (temp.isFile()) {
                FileInputStream input = new FileInputStream(temp);
                FileOutputStream output = new FileOutputStream(newPath + "/" + (temp.getName()).toString());
                byte[] b = new byte[1024 * 5];
                int len;
                while ((len = input.read(b)) != -1) {
                    output.write(b, 0, len);
                }
                output.flush();
                output.close();
                input.close();
            }
            if (temp.isDirectory()) {
                copyFolder(oldPath + "/" + file[i], newPath + "/" + file[i]);
            }
        }
    } catch (Exception e) {
        LOG.error(e);
    }

}

---

From source file:cn.edu.mju.Thriphoto.net.HttpManager.java

private static void fileToUpload(OutputStream out, String filepath) throws WeiboException {
    if (filepath == null) {
        return;/*from  w w w .jav  a2 s. c o  m*/
    }
    StringBuilder temp = new StringBuilder();

    temp.append(MP_BOUNDARY).append("\r\n");

    temp.append("content-disposition: form-data; name=\"file\"; filename=\"").append(filepath).append("\"\r\n");
    temp.append("Content-Type: application/octet-stream; charset=utf-8\r\n\r\n");
    byte[] res = temp.toString().getBytes();
    FileInputStream input = null;
    try {
        out.write(res);
        input = new FileInputStream(filepath);
        byte[] buffer = new byte[1024 * 50];
        while (true) {
            int count = input.read(buffer);
            if (count == -1) {
                break;
            }
            out.write(buffer, 0, count);
        }
        out.write("\r\n".getBytes());
        out.write(("\r\n" + END_MP_BOUNDARY).getBytes());
    } catch (IOException e) {
        throw new WeiboException(e);
    } finally {
        if (null != input) {
            try {
                input.close();
            } catch (IOException e) {
                throw new WeiboException(e);
            }
        }
    }
}

---

From source file:cn.edu.mju.Thriphoto.net.HttpManager.java

private static void imageContentToUpload(OutputStream out, String imgpath) throws WeiboException {
    if (imgpath == null) {
        return;/*from   w  w  w. ja  v a  2 s  .c om*/
    }
    StringBuilder temp = new StringBuilder();

    temp.append(MP_BOUNDARY).append("\r\n");
    temp.append("Content-Disposition: form-data; name=\"pic\"; filename=\"").append("news_image")
            .append("\"\r\n");
    String filetype = "image/png";
    temp.append("Content-Type: ").append(filetype).append("\r\n\r\n");
    // temp.append("content-disposition: form-data; name=\"file\"; filename=\"")
    // .append(imgpath).append("\"\r\n");
    // temp.append("Content-Type: application/octet-stream; charset=utf-8\r\n\r\n");
    byte[] res = temp.toString().getBytes();
    FileInputStream input = null;
    try {
        out.write(res);
        input = new FileInputStream(imgpath);
        byte[] buffer = new byte[1024 * 50];
        while (true) {
            int count = input.read(buffer);
            if (count == -1) {
                break;
            }
            out.write(buffer, 0, count);
        }
        out.write("\r\n".getBytes());
        out.write(("\r\n" + END_MP_BOUNDARY).getBytes());
    } catch (IOException e) {
        throw new WeiboException(e);
    } finally {
        if (null != input) {
            try {
                input.close();
            } catch (IOException e) {
                throw new WeiboException(e);
            }
        }
    }
}

---

From source file:CSVTools.CsvToolsApi.java

private static void hashFile(String fileName) throws NoSuchAlgorithmException, IOException {

    MessageDigest md = MessageDigest.getInstance("SHA1");
    FileInputStream fis;
    fis = new FileInputStream(fileName);
    byte[] dataBytes = new byte[1024];

    int nread = 0;

    while ((nread = fis.read(dataBytes)) != -1) {
        md.update(dataBytes, 0, nread);/*from w ww. j  a  v a 2 s  .  c o  m*/
    }
    ;

    byte[] mdbytes = md.digest();

    // convert the byte to hex format
    StringBuffer sb = new StringBuffer("");
    for (int i = 0; i < mdbytes.length; i++) {
        sb.append(Integer.toString((mdbytes[i] & 0xff) + 0x100, 16).substring(1));
    }

    System.out.println("Digest(in hex format):: " + sb.toString());

}

---

From source file:com.iksgmbh.sql.pojomemodb.utils.FileUtil.java

/**
 * Uses streams to perform copy/* w w  w  .  j  ava 2s .  co m*/
 * @param fromFile
 * @param toFile
 * @throws IOException
 */
public static void copyBinaryFile(final File fromFile, File toFile) {
    if (!fromFile.exists())
        throw new RuntimeException("FileCopy: " + "no such source file: " + fromFile.getAbsolutePath());
    if (!fromFile.isFile())
        throw new RuntimeException("FileCopy: " + "can't copy directory: " + fromFile.getAbsolutePath());
    if (!fromFile.canRead())
        throw new RuntimeException("FileCopy: " + "source file is unreadable: " + fromFile.getAbsolutePath());

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

    if (toFile.exists()) {
        if (!toFile.canWrite())
            throw new RuntimeException(
                    "FileCopy: " + "destination file is unwriteable: " + toFile.getAbsolutePath());
    } else {
        String parent = toFile.getParent();
        if (parent == null)
            parent = System.getProperty("user.dir");
        File dir = new File(parent);
        if (!dir.exists())
            throw new RuntimeException("FileCopy: " + "destination directory doesn't exist: " + parent);
        if (dir.isFile())
            throw new RuntimeException("FileCopy: " + "destination is not a directory: " + parent);
        if (!dir.canWrite())
            throw new RuntimeException("FileCopy: " + "destination directory is unwriteable: " + parent);
    }

    FileInputStream from = null;
    FileOutputStream to = null;
    try {
        from = new FileInputStream(fromFile);
        to = new FileOutputStream(toFile);
        byte[] buffer = new byte[4096];
        int bytesRead;

        while ((bytesRead = from.read(buffer)) != -1)
            to.write(buffer, 0, bytesRead); // write
    } catch (IOException e) {
        throw new RuntimeException(e);
    } finally {
        if (from != null)
            try {
                from.close();
            } catch (IOException e) {
                ;
            }
        if (to != null)
            try {
                to.close();
            } catch (IOException e) {
                ;
            }
    }
}

---

From source file:com.nridge.core.base.std.FilUtl.java

/**
 * Compresses the input file into a ZIP file container.
 *
 * @param aInFileName The file name to be compressed.
 * @param aZipFileName The file name of the ZIP container.
 * @throws IOException Related to opening the file streams and
 * related read/write operations.//from  ww w  . j a va  2 s. c  o m
 */
static public void zipFile(String aInFileName, String aZipFileName) throws IOException {
    File inFile;
    int byteCount;
    byte[] ioBuf;
    FileInputStream fileIn;
    ZipOutputStream zipOut;
    FileOutputStream fileOut;

    inFile = new File(aInFileName);
    if (inFile.isDirectory())
        return;

    ioBuf = new byte[FILE_IO_BUFFER_SIZE];
    fileIn = new FileInputStream(inFile);
    fileOut = new FileOutputStream(aZipFileName);
    zipOut = new ZipOutputStream(fileOut);
    zipOut.putNextEntry(new ZipEntry(inFile.getName()));
    byteCount = fileIn.read(ioBuf);
    while (byteCount > 0) {
        zipOut.write(ioBuf, 0, byteCount);
        byteCount = fileIn.read(ioBuf);
    }
    fileIn.close();
    zipOut.closeEntry();
    zipOut.close();
}

---

From source file:com.github.os72.protocjar.maven.ProtocJarMojo.java

static File copyFile(File srcFile, File destFile) throws IOException {
    FileInputStream is = null;
    FileOutputStream os = null;/*  www .j av a 2  s .c  o  m*/
    try {
        is = new FileInputStream(srcFile);
        os = new FileOutputStream(destFile);
        int read = 0;
        byte[] buf = new byte[4096];
        while ((read = is.read(buf)) > 0)
            os.write(buf, 0, read);
    } finally {
        if (is != null)
            is.close();
        if (os != null)
            os.close();
    }
    return destFile;
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• 34
• 35
• 36
• »