Exemplo n.º 1
1
  public DBaseFile(InputStream is) {
    if (is == null) {
      String message = Logging.getMessage("nullValue.InputStreamIsNull");
      Logging.logger().severe(message);
      throw new IllegalArgumentException(message);
    }

    this.file = null;
    try {
      this.header = this.readHeaderFromStream(is);
      this.fields = this.readFieldsFromBuffer(this.header.fieldsHeaderBuffer);
      this.records = this.readRecordsFromStream(is);
    } catch (Exception e) {
      String message = Logging.getMessage("generic.ExceptionAttemptingToReadFrom", is.toString());
      Logging.logger().log(java.util.logging.Level.SEVERE, message, e);
      throw new WWRuntimeException(message, e);
    }
  }
Exemplo n.º 2
0
  public static void readFile(String filenameIn, int bufferSize) throws IOException {
    long lenIn = new File(filenameIn).length();
    if (debug) System.out.println("read " + filenameIn + " len = " + lenIn);

    InputStream in = new FileInputStream(filenameIn);

    long total = 0;
    long start = System.currentTimeMillis();
    byte[] buffer = new byte[bufferSize];
    while (true) {
      int bytesRead = in.read(buffer);
      if (bytesRead == -1) break;
      total += buffer[0];
    }
    double took = .001 * (System.currentTimeMillis() - start);

    in.close();

    double rate = lenIn / took / (1000 * 1000);
    System.out.println(
        " copy ("
            + bufferSize
            + ") took = "
            + took
            + " sec; rate = "
            + rate
            + "Mb/sec total="
            + total);
  }
Exemplo n.º 3
0
  public static void copyFile(String filenameIn, String filenameOut, boolean buffer)
      throws IOException {
    long lenIn = new File(filenameIn).length();
    if (debug) System.out.println("read " + filenameIn + " len = " + lenIn);

    InputStream in = new FileInputStream(filenameIn);
    if (buffer) new BufferedInputStream(in, 10000);

    OutputStream out = new FileOutputStream(filenameOut);
    if (buffer) out = new BufferedOutputStream(out, 1000);

    long start = System.currentTimeMillis();
    IO.copyB(in, out, 10000);
    out.flush();
    double took = .001 * (System.currentTimeMillis() - start);

    out.close();
    in.close();

    long lenOut = new File(filenameOut).length();
    if (debug) System.out.println(" write file= " + filenameOut + " len = " + lenOut);

    double rate = lenIn / took / (1000 * 1000);
    String name = buffer ? "buffer" : "no buffer";
    System.out.println(" copy (" + name + ") took = " + took + " sec; rate = " + rate + "Mb/sec");
  }
Exemplo n.º 4
0
  public static long checksumBufferedInputStream(Path filename) throws IOException {
    try (InputStream in = new BufferedInputStream(Files.newInputStream(filename))) {
      CRC32 crc = new CRC32();

      int c;
      while ((c = in.read()) != -1) crc.update(c);
      return crc.getValue();
    }
  }
Exemplo n.º 5
0
  protected Header readHeaderFromFile(File file) throws IOException {
    InputStream is = null;
    Header header = null;
    try {
      is = new BufferedInputStream(new FileInputStream(file));
      header = this.readHeaderFromStream(is);
    } finally {
      if (is != null) is.close();
    }

    return header;
  }
Exemplo n.º 6
0
  protected List<DBaseRecord> readRecordsFromFile(File file) throws IOException {
    List<DBaseRecord> records;
    InputStream is = null;

    try {
      is = new BufferedInputStream(new FileInputStream(file));
      WWIO.skipBytes(is, this.header.headerLength); // Skip over header
      records = this.readRecordsFromStream(is);
    } finally {
      if (is != null) is.close();
    }

    return records;
  }
Exemplo n.º 7
0
 public static int pipe_stream(InputStream is, OutputStream os, boolean wantsKeepOpen)
     throws IOException { // U: copia de un stream al otro
   int cnt = 0;
   int n;
   byte[] buffer = new byte[BUFF_SZ];
   while ((n = is.read(buffer)) > -1) {
     cnt += n;
     os.write(buffer, 0, n);
   }
   if (!wantsKeepOpen) {
     is.close();
     os.close();
   }
   return cnt;
 }
Exemplo n.º 8
0
  public static void copyFile2null(String filenameIn, int buffer) throws IOException {
    long lenIn = new File(filenameIn).length();
    if (debug) System.out.println("read " + filenameIn + " len = " + lenIn);

    InputStream in = new FileInputStream(filenameIn);

    long start = System.currentTimeMillis();
    IO.copy2null(in, buffer);
    double took = .001 * (System.currentTimeMillis() - start);

    in.close();

    double rate = lenIn / took / (1000 * 1000);
    System.out.println(
        " copy (" + filenameIn + ") took = " + took + " sec; rate = " + rate + "Mb/sec");
  }
Exemplo n.º 9
0
 /**
  * Determines from the magic number whether the given InputStream points to a DDS image. The given
  * InputStream must return true from markSupported() and support a minimum of four bytes of
  * read-ahead.
  *
  * @param in Stream to check
  * @return true if input stream is DDS image or false otherwise
  * @throws java.io.IOException if an I/O exception occurred
  */
 public static boolean isDDSImage(InputStream in) throws IOException {
   if (!(in instanceof BufferedInputStream)) {
     in = new BufferedInputStream(in);
   }
   if (!in.markSupported()) {
     throw new IOException(
         "Can not test non-destructively whether given InputStream is a DDS image");
   }
   in.mark(4);
   int magic = 0;
   for (int i = 0; i < 4; i++) {
     int tmp = in.read();
     if (tmp < 0) {
       in.reset();
       return false;
     }
     magic = ((magic >>> 8) | (tmp << 24));
   }
   in.reset();
   return (magic == MAGIC);
 }
Exemplo n.º 10
0
 public static String get_stream(InputStream is, String encoding) throws IOException {
   if (encoding == null) {
     encoding = CfgEncodingDflt;
   }
   byte[] buffer = new byte[BUFF_SZ];
   StringBuilder out = new StringBuilder();
   logm("DBG", 9, "STREAM GET", is + "");
   for (; ; ) {
     int rsz = is.read(buffer, 0, buffer.length);
     logm("DBG", 9, "STREAM GET READ", rsz);
     if (rsz < 0) break;
     out.append(new String(buffer, 0, rsz, encoding));
   }
   String s = out.toString();
   logm("DBG", 9, "STREAM GET RESULT", s);
   return s;
 }
Exemplo n.º 11
0
  public static String streamToString(InputStream is) throws IOException {
    if (is != null) {
      StringBuilder sb = new StringBuilder();
      String line;

      try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
        while ((line = reader.readLine()) != null) {
          sb.append(line).append("\n");
        }
      } finally {
        is.close();
      }
      return sb.toString();
    } else {
      return "";
    }
  }