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org.apache.lenya.search
Class Grep

java.lang.Object
  org.apache.lenya.search.Grep

public class Grep
extends java.lang.Object

Utility class to provide a subset of the grep functionality.

Constructor Summary

Grep()

Method Summary

static boolean	containsPattern(java.io.File file, java.util.regex.Pattern pattern) Check if the given file contains the pattern
static java.io.File[]	find(java.io.File file, java.lang.String searchString) Find all files below the given file which contain the given search string.
static java.lang.String[]	findPattern(java.io.File file, java.util.regex.Pattern pattern, int group) Find all occurences of pattern in a file.

Methods inherited from class java.lang.Object

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

Constructor Detail

Grep

public Grep()

Method Detail

containsPattern

public static boolean containsPattern(java.io.File file,
                                      java.util.regex.Pattern pattern)
                               throws java.io.IOException

Check if the given file contains the pattern

Parameters:

file - the file which is to be searched for the pattern

pattern - the pattern that is being searched.

Returns:

true if the file contains the string, false otherwise.

Throws:

java.io.IOException

findPattern

public static java.lang.String[] findPattern(java.io.File file,
                                             java.util.regex.Pattern pattern,
                                             int group)
                                      throws java.io.IOException

Find all occurences of pattern in a file.

Parameters:

file - the file to search for occurences of pattern

pattern - the pattern to search for

group - which group in the pattern to return

Returns:

an array of occurences of pattern (i.e. the groupth group of the match)

Throws:

java.io.IOException - if the file could not be read.

find

public static java.io.File[] find(java.io.File file,
                                  java.lang.String searchString)
                           throws java.io.IOException

Find all files below the given file which contain the given search string.

Parameters:

file - the where to start the search

searchString - the string to search for.

Returns:

an array of files which contain the search string.

Throws:

java.io.IOException - if any of the files could not be opened.