com.buglabs.bug.sysfs
Class SysfsNode

java.lang.Object
  com.buglabs.bug.sysfs.SysfsNode

Direct Known Subclasses:

ADXL34xDevice, BMIDevice, BUGBaseControl, LEDDevice, ML8953Device

public abstract class SysfsNode
extends java.lang.Object

An abstract class for files within sysfs. This class has helper methods in dealing with the files.

Field Summary

protected java.io.File

root

Constructor Summary

SysfsNode(java.io.File root)

Method Summary

protected static java.lang.String	getFirstLineofFile(java.io.File file) Return first line of file as a string.
protected static java.lang.String	pad(java.lang.String s, int len, char j) Pad a string to length len of char j
protected static java.lang.String	parseHexInt(java.lang.String sn)
protected static int	parseInt(java.lang.String sn) Null-safe.
protected static java.lang.String	parseMultiInt(java.lang.String sn) null-safe.
protected void	println(java.io.File file, java.lang.String line) Write a line to a file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

root

protected final java.io.File root

Constructor Detail

SysfsNode

public SysfsNode(java.io.File root)

Method Detail

parseMultiInt

protected static java.lang.String parseMultiInt(java.lang.String sn)

null-safe.

Parameters:

sn -

Returns:

parseInt

protected static int parseInt(java.lang.String sn)

Null-safe. Given a number like "0x2f" convert to integer.

Parameters:

sn -

Returns:

the integer or 0 if passed value is null. Invalid numbers will generate exceptions.

parseHexInt

protected static java.lang.String parseHexInt(java.lang.String sn)

Parameters:

sn -

Returns:

the integer as hex or 0 if passed value is null. Invalid numbers will generate exceptions.

pad

protected static java.lang.String pad(java.lang.String s,
                                      int len,
                                      char j)

Pad a string to length len of char j

Parameters:

s -

len -

j -

Returns:

getFirstLineofFile

protected static java.lang.String getFirstLineofFile(java.io.File file)

Return first line of file as a string.

Parameters:

file -

Returns:

first line or null if file read fails (file does not exist, etc.).

println

protected void println(java.io.File file,
                       java.lang.String line)
                throws java.io.IOException

Write a line to a file.

Parameters:

file -

line -

Throws:

java.io.IOException