StdChannel

java.lang.Object
- tcl.lang.StdChannel

```
public class StdChannel
extends java.lang.Object
```
Subclass of the abstract class Channel. It implements all of the methods to perform read, write, open, close, etc on system stdio channels.

Field Summary

Fields
Modifier and Type	Field and Description
`protected boolean`	`blocking` Set to false when channel is in non-blocking mode.
`protected int`	`buffering` Buffering (full,line, or none)
`protected int`	`bufferSize` Buffer size, in bytes, allocated for channel to store input or output
`protected int`	`bytesPerChar`
`protected java.lang.String`	`encoding` Name of Java encoding for this Channel.
`protected tcl.lang.TclInputStream`	`input` Tcl input and output objecs.
`protected char`	`inputEofChar` If nonzero, use this as a signal of EOF on input.
`protected int`	`inputTranslation` Translation mode for end-of-line character
`protected int`	`mode` The read, write, append and create flags are set here.
`protected tcl.lang.TclOutputStream`	`output`
`protected char`	`outputEofChar` If nonzero, append this to a writeable channel on close.
`protected int`	`outputTranslation`
`protected int`	`refCount` How many interpreters hold references to this IO channel?

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected void`	`checkRead(Interp interp)`
`protected void`	`checkWrite(Interp interp)`
`protected java.io.InputStream`	`getInputStream()` This method should be overridden in the subclass to provide a channel specific InputStream object.
`protected java.io.OutputStream`	`getOutputStream()` This method should be overridden in the subclass to provide a channel specific OutputStream object.
`protected void`	`initInput()` Setup the TclInputStream on the first call to read
`protected void`	`initOutput()` Setup the TclOutputStream on the first call to write
`static void`	`setErr(java.io.PrintStream err)`
`static void`	`setIn(java.io.InputStream in)` Reassign the static variables that reference the in, out, and err streams used by Jacl.
`static void`	`setOut(java.io.PrintStream out)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - mode
```
protected int mode
```
    The read, write, append and create flags are set here. The variables used to set the flags are found in the class TclIO.
  - refCount
```
protected int refCount
```
    How many interpreters hold references to this IO channel?
  - input
```
protected tcl.lang.TclInputStream input
```
    Tcl input and output objecs. These are like a mix between a Java Stream and a Reader.
  - output
```
protected tcl.lang.TclOutputStream output
```
  - blocking
```
protected boolean blocking
```
    Set to false when channel is in non-blocking mode.
  - buffering
```
protected int buffering
```
    Buffering (full,line, or none)
  - bufferSize
```
protected int bufferSize
```
    Buffer size, in bytes, allocated for channel to store input or output
  - encoding
```
protected java.lang.String encoding
```
    Name of Java encoding for this Channel. A null value means use no encoding (binary).
  - bytesPerChar
```
protected int bytesPerChar
```
  - inputTranslation
```
protected int inputTranslation
```
    Translation mode for end-of-line character
  - outputTranslation
```
protected int outputTranslation
```
  - inputEofChar
```
protected char inputEofChar
```
    If nonzero, use this as a signal of EOF on input.
  - outputEofChar
```
protected char outputEofChar
```
    If nonzero, append this to a writeable channel on close.
- Method Detail
  - setIn
```
public static void setIn(java.io.InputStream in)
```
    Reassign the static variables that reference the in, out, and err streams used by Jacl. The user should note that these methods will change the underlying Java stream in use for all Jacl interpreters in the current process.
  - setOut
```
public static void setOut(java.io.PrintStream out)
```
  - setErr
```
public static void setErr(java.io.PrintStream err)
```
  - getInputStream
```
protected java.io.InputStream getInputStream()
                                      throws java.io.IOException
```
    This method should be overridden in the subclass to provide a channel specific InputStream object.
    
    Throws:
    
    java.io.IOException
  - getOutputStream
```
protected java.io.OutputStream getOutputStream()
                                        throws java.io.IOException
```
    This method should be overridden in the subclass to provide a channel specific OutputStream object.
    
    Throws:
    
    java.io.IOException
  - initInput
```
protected void initInput()
                  throws java.io.IOException
```
    Setup the TclInputStream on the first call to read
    
    Throws:
    
    java.io.IOException
  - initOutput
```
protected void initOutput()
                   throws java.io.IOException
```
    Setup the TclOutputStream on the first call to write
    
    Throws:
    
    java.io.IOException
  - checkRead
```
protected void checkRead(Interp interp)
                  throws TclException
```
    Throws:
    
    TclException
  - checkWrite
```
protected void checkWrite(Interp interp)
                   throws TclException
```
    Throws:
    
    TclException

Class StdChannel

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

mode

refCount

input

output

blocking

buffering

bufferSize

encoding

bytesPerChar

inputTranslation

outputTranslation

inputEofChar

outputEofChar

Method Detail

setIn

setOut

setErr

getInputStream

getOutputStream

initInput

initOutput

checkRead

checkWrite