109 lines
2.3 KiB
Java
109 lines
2.3 KiB
Java
|
package zutil.io;
|
||
|
|
|
||
|
|
import java.io.InputStream;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This class saves all the input data in to an StringBuffer
|
||
|
|
*
|
||
|
|
* @author Ziver
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
public class StringInputStream extends InputStream{
|
||
|
|
// The buffer
|
||
|
|
protected StringBuilder buffer;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates an new instance of this class
|
||
|
|
*/
|
||
|
|
public StringInputStream(){
|
||
|
|
clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an estimate of the number of bytes
|
||
|
|
* that can be read (or skipped over) from this
|
||
|
|
* input stream without blocking by the next
|
||
|
|
* invocation of a method for this input stream.
|
||
|
|
*/
|
||
|
|
public int available(){
|
||
|
|
return buffer.length();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reads the next byte of data from the input stream.
|
||
|
|
*/
|
||
|
|
public int read(){
|
||
|
|
int ret = Character.getNumericValue( buffer.charAt( 0 ));
|
||
|
|
buffer.deleteCharAt( 0 );
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reads some number of bytes from the input stream
|
||
|
|
* and stores them into the buffer array b.
|
||
|
|
*/
|
||
|
|
public int read(byte[] b){
|
||
|
|
return read( b, 0, b.length );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reads up to len bytes of data from the input stream
|
||
|
|
* into an array of bytes.
|
||
|
|
*/
|
||
|
|
public int read(byte[] b, int off, int len){
|
||
|
|
if( buffer.length() < len ){
|
||
|
|
len = buffer.length();
|
||
|
|
}
|
||
|
|
char[] ctmp = new char[len];
|
||
|
|
buffer.getChars(0, len, ctmp, 0);
|
||
|
|
byte[] btmp = new String( ctmp ).getBytes();
|
||
|
|
System.arraycopy(btmp, 0, b, off, len);
|
||
|
|
return len;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Skips over and discards n bytes of data from this
|
||
|
|
* input stream.
|
||
|
|
*
|
||
|
|
* @param n is the amount characters to skip
|
||
|
|
*/
|
||
|
|
public long skip(long n){
|
||
|
|
if( buffer.length() < n ){
|
||
|
|
int len = buffer.length();
|
||
|
|
buffer.delete(0, len);
|
||
|
|
return len;
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
buffer.delete(0, (int) n);
|
||
|
|
return n;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Tests if this input stream supports the mark and
|
||
|
|
* reset methods.
|
||
|
|
*/
|
||
|
|
public boolean markSupported(){
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Closes this input stream and releases any system
|
||
|
|
* resources associated with the stream.
|
||
|
|
*/
|
||
|
|
public void close(){
|
||
|
|
clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
public void clear(){
|
||
|
|
buffer = new StringBuilder();
|
||
|
|
}
|
||
|
|
|
||
|
|
public void add( String data ){
|
||
|
|
buffer.append( data );
|
||
|
|
}
|
||
|
|
}
|