org.jfree.pixie.wmf
Class Buffer
java.lang.Object
org.jfree.pixie.wmf.Buffer
public class Buffer
extends java.lang.Object
A block of raw mmeory. This is used to store various metafile objects as they are read
in from file.
Buffer() - Default Constructor.
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Buffer(int length) - Defines a new buffer with the given initial size in bytes.
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int | getByte(int offset) - Return the 8-bit int at the given byte offset.
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InputStream | getInputStream(int offset) - Gets an input stream to read from the memory buffer.
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int | getInt(int offset) - Return the 32-bit int at the given byte offset.
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int | getLength() - The size of the stored data in the memory.
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int | getShort(int offset) - Return the 16-bit int at the given byte offset.
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String | getString(int offset, int len) - Return the null-terminated string at the given byte offset with the given maximum
length.
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protected void | move(int sourceoffset, int length, int targetoffset) - Moves the buffer contents from the source offset to the target offset, the areas
should not overlap.
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void | read(InputStream in, int offset, int len) - Read
len bytes into the memory from a stream and stores the read bytes
at the given offset.
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void | setByte(int offset, int value) - Sets the byte at the given offset.
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protected void | setCapacity(int capacity) - Ensures that the buffer has enough space for the given number of bytes.
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void | setInt(int offset, int value) - Set the int value as big-endian.
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protected void | setLength(int len) - Extends the length to the given new size.
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void | setShort(int offset, int shortval) - Stores the given short as BigEndian value.
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void | setString(int offset, String str) - Writes the given string as byte stream using the plattforms default encoding.
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Buffer
protected Buffer()
Default Constructor. Defines a buffer without an initial size.
Buffer
protected Buffer(int length)
Defines a new buffer with the given initial size in bytes.
length
- the length of the buffer in bytes.
getByte
public int getByte(int offset)
Return the 8-bit int at the given byte offset.
offset
- the offset from where to read the byte
getInputStream
public InputStream getInputStream(int offset)
Gets an input stream to read from the memory buffer.
offset
- the offse, from where to read.
getInt
public int getInt(int offset)
Return the 32-bit int at the given byte offset.
offset
- the offset where the integer value is stored in the memory
getLength
public final int getLength()
The size of the stored data in the memory.
getShort
public int getShort(int offset)
Return the 16-bit int at the given byte offset.
offset
- the offset from where to read the short.
getString
public String getString(int offset,
int len)
Return the null-terminated string at the given byte offset with the given maximum
length.
offset
- the offset where the string startslen
- the maximum length of the string
- the null-terminated string read.
move
protected void move(int sourceoffset,
int length,
int targetoffset)
Moves the buffer contents from the source offset to the target offset, the areas
should not overlap.
sourceoffset
- length
- targetoffset
-
read
public void read(InputStream in,
int offset,
int len)
throws IOException
Read len
bytes into the memory from a stream and stores the read bytes
at the given offset.
in
- the input stream that should be usedoffset
- the offsetlen
- the number bytes that should be read.
setByte
public void setByte(int offset,
int value)
Sets the byte at the given offset.
offset
- the offset.value
- the byte that should be set.
setCapacity
protected void setCapacity(int capacity)
Ensures that the buffer has enough space for the given number of bytes.
capacity
- the new capacity that should be ensured.
setInt
public void setInt(int offset,
int value)
Set the int value as big-endian.
offset
- the offset where to set the int value.value
- the integer value that should be set.
setLength
protected void setLength(int len)
Extends the length to the given new size.
setShort
public void setShort(int offset,
int shortval)
Stores the given short as BigEndian value.
offset
- the offset.shortval
- the shortvalue.
setString
public void setString(int offset,
String str)
Writes the given string as byte stream using the plattforms default encoding.
offset
- the offset, where to store the string.str
- the string that should be stored in the Wmf.