/** Reads an SRATIONAL value and returns it as a Rational. */
protected Rational readSignedRational(long count, long value) throws IOException {
_raf.seek(value);
long numer = ModuleBase.readSignedInt(_raf, _bigEndian);
long denom = ModuleBase.readSignedInt(_raf, _bigEndian);
return new Rational(numer, denom);
}
/**
* Reads an array of strings from the TIFF file.
*
* @param count Number of strings to read
* @param value Offset from which to read
*/
protected String[] readASCIIArray(long count, long value) throws IOException {
_raf.seek(value);
int nstrs = 0;
List list = new LinkedList();
byte[] buf = new byte[(int) count];
_raf.read(buf);
StringBuffer strbuf = new StringBuffer();
for (int i = 0; i < count; i++) {
int b = buf[i];
if (b == 0) {
list.add(strbuf.toString());
strbuf.setLength(0);
} else {
strbuf.append((char) b);
}
}
/* We can't use ArrayList.toArray because that returns an
Object[], not a String[] ... sigh. */
String[] strs = new String[nstrs];
ListIterator iter = list.listIterator();
for (int i = 0; i < nstrs; i++) {
strs[i] = (String) iter.next();
}
return strs;
}
/** Reads a TIFF array of signed 16-bit values and returns it as an int array. */
protected int[] readSShortArray(int type, long count, long value) throws IOException {
_raf.seek(value);
int[] iarray = new int[(int) count];
for (int i = 0; i < count; i++) {
iarray[i] = ModuleBase.readSignedShort(_raf, _bigEndian);
}
return iarray;
}
/** Reads a TIFF array of unsigned 16-bit values and returns it as an int array. */
protected int[] readShortArray(int type, long count, long value) throws IOException {
_raf.seek(value);
int[] iarray = new int[(int) count];
for (int i = 0; i < count; i++) {
iarray[i] = (int) readUnsigned(type);
}
return iarray;
}
/**
* Reads a TIFF array of signed 32-bit integer values and returns it as a long array.
*
* @param type TIFF type to read; must be a 32-bit type
* @param count Number of values to read
* @param value Offset from which to read
*/
protected long[] readLongArray(int type, long count, long value) throws IOException {
_raf.seek(value);
long[] array = new long[(int) count];
for (int i = 0; i < count; i++) {
array[i] = readUnsigned(type);
}
return array;
}
/**
* Reads a TIFF array of DOUBLE 64-bit values and returns it as a double array.
*
* @param count Number of values to read
* @param value Offset from which to read
*/
protected double[] readDoubleArray(long count, long value) throws IOException {
_raf.seek(value);
double[] darray = new double[(int) count];
for (int i = 0; i < count; i++) {
darray[i] = ModuleBase.readDouble(_raf, _bigEndian);
}
return darray;
}
/**
* Reads a string value from the TIFF file.
*
* @param count Length of string
* @param value Offset of string
*/
protected String readASCII(long count, long value) throws IOException {
_raf.seek(value);
byte[] buffer = new byte[(int) count];
_raf.read(buffer);
StringBuffer sb = new StringBuffer();
for (int i = 0; i < count; i++) {
if (buffer[i] == 0) {
break;
}
sb.append((char) buffer[i]);
}
return sb.toString();
}
/**
* Start recording
*
* @param stub
*/
public static void startRecorder(String stub) {
try {
stamp = new SimpleDateFormat("HH:mm:ss");
SimpleDateFormat dateformat = new SimpleDateFormat("yyMMdd");
Date d = new Date();
String s = dateformat.format(d);
String name = logdir + stub + s + ".txt";
R = new RandomAccessFile(name, "rw");
System.out.println("Log file: " + name);
long N = R.length();
R.seek(N);
recording = true;
} catch (Exception e) {
e.printStackTrace();
}
}
/** Reads an array of SRATIONAL values and returns it as an array of Rational. */
protected Rational[] readSignedRationalArray(long count, long value) throws IOException {
_raf.seek(value);
byte[] buffer = new byte[(int) calcValueSize(SRATIONAL, count)];
_raf.read(buffer);
DataInputStream stream = new DataInputStream(new ByteArrayInputStream(buffer));
Rational[] rarray = new Rational[(int) count];
for (int i = 0; i < count; i++) {
long numer = ModuleBase.readSignedInt(stream, _bigEndian, null);
long denom = ModuleBase.readSignedInt(stream, _bigEndian, null);
rarray[i] = new Rational(numer, denom);
}
return rarray;
}
/**
* Read block from file.
*
* @param file - File to read.
* @param off - Marker position in file to start read from if {@code -1} read last blockSz bytes.
* @param blockSz - Maximum number of chars to read.
* @param lastModified - File last modification time.
* @return Read file block.
* @throws IOException In case of error.
*/
public static VisorFileBlock readBlock(File file, long off, int blockSz, long lastModified)
throws IOException {
RandomAccessFile raf = null;
try {
long fSz = file.length();
long fLastModified = file.lastModified();
long pos = off >= 0 ? off : Math.max(fSz - blockSz, 0);
// Try read more that file length.
if (fLastModified == lastModified && fSz != 0 && pos >= fSz)
throw new IOException(
"Trying to read file block with wrong offset: " + pos + " while file size: " + fSz);
if (fSz == 0)
return new VisorFileBlock(file.getPath(), pos, fLastModified, 0, false, EMPTY_FILE_BUF);
else {
int toRead = Math.min(blockSz, (int) (fSz - pos));
byte[] buf = new byte[toRead];
raf = new RandomAccessFile(file, "r");
raf.seek(pos);
int cntRead = raf.read(buf, 0, toRead);
if (cntRead != toRead)
throw new IOException(
"Count of requested and actually read bytes does not match [cntRead="
+ cntRead
+ ", toRead="
+ toRead
+ ']');
boolean zipped = buf.length > 512;
return new VisorFileBlock(
file.getPath(), pos, fSz, fLastModified, zipped, zipped ? zipBytes(buf) : buf);
}
} finally {
U.close(raf, null);
}
}
public static String readArray(String s) {
String output = "[ ";
boolean endOfFile = false;
try {
RandomAccessFile input = new RandomAccessFile(s, "rw");
input.seek(0);
while (!endOfFile) {
try {
output = output + input.readInt() + " ";
} catch (EOFException e) {
endOfFile = true;
output = output + "]";
}
}
} catch (IOException e) {
return e.getMessage();
}
return output;
}
/** Reads and returns a single unsigned 16-bit value. */
protected int readShort(int type, long count, long value) throws IOException {
_raf.seek(value);
return (int) readUnsigned(type);
}
/**
* Reads and returns a single unsigned 32-bit integer value.
*
* @param type TIFF type to read; must be a 32-bit type
* @param count Unused
* @param value Offset from which to read
*/
protected long readLong(int type, long count, long value) throws IOException {
_raf.seek(value);
return readUnsigned(type);
}
/**
* Reads an array of bytes and returns it as a byte array.
*
* @param type Unused
* @param count Number of bytes to read
* @param value Offset from which to read
*/
protected byte[] readTrueByteArray(int type, long count, long value) throws IOException {
_raf.seek(value);
byte[] array = new byte[(int) count];
_raf.read(array);
return array;
}
/**
* Parse the IFD. Errors are not suppressed.
*
* @param byteOffsetIsValid If true, allow offsets on odd byte boundaries
* @return The offset of the next IFD
*/
public long parse(boolean byteOffsetIsValid) throws TiffException {
/* Start at the IFD offset, read the number of entries, then
* read the entire IFD.
*/
long offset = _offset;
_next = 0L;
byte[] buffer;
int nFields = 0;
try {
_raf.seek(offset);
nFields = ModuleBase.readUnsignedShort(_raf, _bigEndian);
offset += 2;
int len = 12 * nFields;
buffer = new byte[len];
_raf.read(buffer, 0, len);
/* Read the offset of the next IFD (or 0 if none). */
offset += len;
_next = ModuleBase.readUnsignedInt(_raf, _bigEndian);
} catch (Exception e) {
throw new TiffException("Premature EOF", offset);
}
DataInputStream ifdStream = new DataInputStream(new ByteArrayInputStream(buffer));
try {
int prevTag = 0;
for (int i = 0; i < nFields; i++) {
int tag = ModuleBase.readUnsignedShort(ifdStream, _bigEndian, null);
/* Tags must be in ascending numerical order. */
if (!debug_allowoutofsequence && tag < prevTag) {
_info.setMessage(
new ErrorMessage("Tag " + tag + " out of sequence", _offset + 2 + 12 * i));
_info.setWellFormed(false);
}
prevTag = tag;
int type = ModuleBase.readUnsignedShort(ifdStream, _bigEndian, null);
/* Skip over tags with unknown type. */
if (type < BYTE || type > IFD) {
_info.setMessage(
new ErrorMessage(
"Unknown data type", "Type = " + type + ", Tag = " + tag, _offset + 4 + 12 * i));
} else {
/* Type gives indication of the TIFF version. */
if (SBYTE <= type && type <= IFD) {
_version = 6;
}
long count = ModuleBase.readUnsignedInt(ifdStream, _bigEndian, null);
long value = ModuleBase.readUnsignedInt(ifdStream, _bigEndian, null);
if (calcValueSize(type, count) > 4) {
/* Value is the word-aligned offset of the actual
* value. */
if ((value & 1) != 0) {
if (byteOffsetIsValid) {
_info.setMessage(
new InfoMessage(
"Value offset not word-aligned: " + value, _offset + 10 + 12 * i));
} else {
throw new TiffException(
"Value offset not " + "word-aligned: " + value, _offset + 10 + 12 * i);
}
}
} else {
/* Value is the actual value; pass the offset of
* the value. */
value = _offset + 10 + 12 * i;
}
lookupTag(tag, type, count, value);
}
}
} catch (IOException e) {
throw new TiffException("Read error", _offset + 2);
}
postParseInitialization();
return _next;
}