org.wandora.utils

Class SeparatorSplittingReader

java.lang.Object

java.io.Reader

java.io.FilterReader

java.io.PushbackReader

org.wandora.utils.SeparatorSplittingReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Readable

public class SeparatorSplittingReader
extends java.io.PushbackReader

SeparatorSplittingReader splits files into multiple files according to separator strings.The class extends PushbackReader. It's sole constructor requires separator string to be given. Subsequent read()s return -1 not only at the end of character stream, but also every time the separator string is encountered in reading. To check whether the Reader is really at the end of stream, the method eof() can be used. When a separator has been encountered, reads return -1 until separator is skipped using method skipSeparator().

Author:

pasi

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.String	atSeparator
private java.util.Hashtable	myseps
private int	pushbackbufsize

Fields inherited from class java.io.FilterReader

in

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor and Description
SeparatorSplittingReader(java.io.Reader in, int buflen)
SeparatorSplittingReader(java.io.Reader in, java.lang.String separator)

Method Summary

Modifier and Type	Method and Description
void	addSeparator(java.lang.String separator)
java.lang.String	atSeparator()
private static void	createDirectoriesIfNeeded(java.lang.String filename)
boolean	eof()
static void	main(java.lang.String[] args) Usage: $0 [-h header-separator] [-f footer-separator] [-g filename-regexp] [-o output-filename] [-s separator-string] [-e charset] [-p output-path] file file ...
private static java.lang.String	matchString(java.lang.String regularExpression, java.lang.String string)
private static java.lang.String	preventOverWrite(java.lang.String filename)
int	read()
void	removeSeparator(java.lang.String separator)
boolean	skipSeparator()
void	unread(char[] buf)
void	unread(char[] cbuf, int off, int len)
void	unread(int c)

Methods inherited from class java.io.PushbackReader

close, mark, markSupported, read, ready, reset, skip

Methods inherited from class java.io.Reader

read, read

Methods inherited from class java.lang.Object

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

Field Detail

myseps

private java.util.Hashtable myseps

pushbackbufsize

private int pushbackbufsize

atSeparator

private java.lang.String atSeparator

Constructor Detail

SeparatorSplittingReader

public SeparatorSplittingReader(java.io.Reader in,
                                int buflen)

SeparatorSplittingReader

public SeparatorSplittingReader(java.io.Reader in,
                                java.lang.String separator)
                         throws java.lang.NullPointerException

Throws:

java.lang.NullPointerException

Method Detail

addSeparator

public void addSeparator(java.lang.String separator)

removeSeparator

public void removeSeparator(java.lang.String separator)

skipSeparator

public boolean skipSeparator()
                      throws java.io.IOException

Throws:

java.io.IOException

read

public int read()
         throws java.io.IOException

Overrides:

read in class java.io.PushbackReader

Throws:

java.io.IOException

unread

public void unread(char[] buf)
            throws java.io.IOException

Overrides:

unread in class java.io.PushbackReader

Throws:

java.io.IOException

unread

public void unread(char[] cbuf,
                   int off,
                   int len)
            throws java.io.IOException

Overrides:

unread in class java.io.PushbackReader

Throws:

java.io.IOException

unread

public void unread(int c)
            throws java.io.IOException

Overrides:

unread in class java.io.PushbackReader

Throws:

java.io.IOException

eof

public boolean eof()

atSeparator

public java.lang.String atSeparator()

main

public static void main(java.lang.String[] args)

Usage: $0 [-h header-separator] [-f footer-separator] [-g filename-regexp] [-o output-filename] [-s separator-string] [-e charset] [-p output-path] file file ... Reads text input file, and splits it to separate files, using separator-string as a divider. If no separator-string is given, default separator-string "\n" is used. If header-separator and/or footer-separator are specified, the output files will all begin and/or end with header and/or footer from the input file, defined by these separators. Also, splitting is not performed before header and after footer, if they are specified. In other words, each output file will have header from the input file, followed by a split middle section from the input file, and finally followed by a footer from the input file. If filename-regexp is given, each output file will be named with the regexp match of filename-regexp applied to the current divider match by separator-regexp, and will share their filename extension as the input file. If output-filename is given, it will be used as the output filename base, and output filenames will be constructed by appending the base file name with underscore and a sequential number starting with 0. Again, the output files will share their filename extension with the input file. From filename-regexp and output-filename, filename-regexp takes precedence. If neither is given, the base filename will be the base file name of the input file, and underscore + sequence number are used.

Parameters:

args - the command line arguments

matchString

private static java.lang.String matchString(java.lang.String regularExpression,
                                            java.lang.String string)

createDirectoriesIfNeeded

private static void createDirectoriesIfNeeded(java.lang.String filename)

preventOverWrite

private static java.lang.String preventOverWrite(java.lang.String filename)