org.apache.jackrabbit.oak.commons

Class FileIOUtils

java.lang.Object

org.apache.jackrabbit.oak.commons.FileIOUtils

public final class FileIOUtils
extends Object

Simple File utils

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FileIOUtils.TransformingComparator Decorates the given comparator and applies the function before delegating to the decorated comparator.

Method Summary

Methods

Modifier and Type	Method and Description
static Comparator<String>	lineBreakAwareComparator(Comparator<String> delegate) Composing iterator which unescapes for line breaks and delegates to the given comparator.
static Set<String>	readStringsAsSet(InputStream stream, boolean unescape) Reads strings from the given stream into a set and optionally unescaping for line breaks.
static void	writeAsLine(BufferedWriter writer, String str, boolean escape) Writes a string as a new line into the given buffered writer and optionally escapes the line for line breaks.
static int	writeStrings(Iterator<String> iterator, File f, boolean escape) Writes string from the given iterator to the given file and optionally escape the written strings for line breaks.

Methods inherited from class java.lang.Object

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

Method Detail

writeAsLine

public static void writeAsLine(BufferedWriter writer,
               String str,
               boolean escape)
                        throws IOException

Writes a string as a new line into the given buffered writer and optionally escapes the line for line breaks.

Parameters:

writer - to write the string

str - the string to write

escape - whether to escape string for line breaks

Throws:

IOException

writeStrings

public static int writeStrings(Iterator<String> iterator,
               File f,
               boolean escape)
                        throws IOException

Writes string from the given iterator to the given file and optionally escape the written strings for line breaks.

Parameters:

iterator - the source of the strings

f - file to write to

escape - whether to escape for line breaks

Returns:

count

Throws:

IOException

readStringsAsSet

public static Set<String> readStringsAsSet(InputStream stream,
                           boolean unescape)
                                    throws IOException

Reads strings from the given stream into a set and optionally unescaping for line breaks.

Parameters:

stream - the source of the strings

unescape - whether to unescape for line breaks

Returns:

set

Throws:

IOException

lineBreakAwareComparator

public static Comparator<String> lineBreakAwareComparator(Comparator<String> delegate)

Composing iterator which unescapes for line breaks and delegates to the given comparator. When using this it should be ensured that the data source has been correspondingly escaped.

Parameters:

delegate - the actual comparison iterator

Returns:

comparator aware of line breaks