org.unix4j.unix.grep

Class GrepOptionSets

java.lang.Object

org.unix4j.unix.grep.GrepOptionSets

public final class GrepOptionSets
extends Object

Options for the grep command with the the following options:

	-i		--ignoreCase		Match lines ignoring the case when comparing the strings, also known from Unix with its acronym 'i'.
	-v		--invertMatch		Invert the match result, that is, a non-matching line is written to the output and a matching line is not. This option is also known from Unix with its acronym 'v'.
	-F		--fixedStrings		Use fixed-strings matching instead of regular expressions. This is usually faster than the standard regexp version. (This option is ignored if a pattern operand is specified instead of the regexp string).
	-n		--lineNumber		Prefix each line of output with the line number within its input file.
	-c		--count		Suppress normal output; instead print a count of matching lines for each input file. With the -v, --invertMatch option, count non-matching lines.
	-l		--matchingFiles		Suppress normal output; instead print the name of each input file from which output would normally have been printed. The scanning will stop on the first match.
	-x		--wholeLine		Select only those matches that exactly match the whole line excluding the terminating line ending. (This option is ignored if a pattern operand is specified instead of the regexp string).

This class serves as entry point to every possible set of grep options defined as an enum constant. With this explicit expansion of all possible option combinations, options can be passed to the command in a very compact form, such as:

 grep(Grep.Options.i, ...);
 grep(Grep.Options.i.v, ...);
 ...
 grep(Grep.Options.i.v.F.n.c.l.x, ...);
 

Field Summary

Fields

Modifier and Type	Field and Description
GrepOptionSet_Fcilnvx	c Option "-c": Suppress normal output; instead print a count of matching lines for each input file.
GrepOptionSet_Fcilnvx	count Option "--count": Suppress normal output; instead print a count of matching lines for each input file.
GrepOptionSet_Fcilnvx	F Option "-F": Use fixed-strings matching instead of regular expressions.
GrepOptionSet_Fcilnvx	fixedStrings Option "--fixedStrings": Use fixed-strings matching instead of regular expressions.
GrepOptionSet_Fcilnvx	i Option "-i": Match lines ignoring the case when comparing the strings, also known from Unix with its acronym 'i'.
GrepOptionSet_Fcilnvx	ignoreCase Option "--ignoreCase": Match lines ignoring the case when comparing the strings, also known from Unix with its acronym 'i'.
static GrepOptionSets	INSTANCE The singleton instance.
GrepOptionSet_Fcilnvx	invertMatch Option "--invertMatch": Invert the match result, that is, a non-matching line is written to the output and a matching line is not.
GrepOptionSet_Fcilnvx	l Option "-l": Suppress normal output; instead print the name of each input file from which output would normally have been printed.
GrepOptionSet_Fcilnvx	lineNumber Option "--lineNumber": Prefix each line of output with the line number within its input file.
GrepOptionSet_Fcilnvx	matchingFiles Option "--matchingFiles": Suppress normal output; instead print the name of each input file from which output would normally have been printed.
GrepOptionSet_Fcilnvx	n Option "-n": Prefix each line of output with the line number within its input file.
GrepOptionSet_Fcilnvx	v Option "-v": Invert the match result, that is, a non-matching line is written to the output and a matching line is not.
GrepOptionSet_Fcilnvx	wholeLine Option "--wholeLine": Select only those matches that exactly match the whole line excluding the terminating line ending.
GrepOptionSet_Fcilnvx	x Option "-x": Select only those matches that exactly match the whole line excluding the terminating line ending.

Constructor Summary

Constructors

Constructor and Description
GrepOptionSets()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final GrepOptionSets INSTANCE

The singleton instance.

c

public final GrepOptionSet_Fcilnvx c

Option "-c": Suppress normal output; instead print a count of matching lines for each input file. With the -v, --invertMatch option, count non-matching lines.

The option "-c" is equivalent to the "--count" option.

count

public final GrepOptionSet_Fcilnvx count

Option "--count": Suppress normal output; instead print a count of matching lines for each input file. With the -v, --invertMatch option, count non-matching lines.

The option "--count" is equivalent to the "-c" option.

F

public final GrepOptionSet_Fcilnvx F

Option "-F": Use fixed-strings matching instead of regular expressions. This is usually faster than the standard regexp version.

(This option is ignored if a pattern operand is specified instead of the regexp string).

The option "-F" is equivalent to the "--fixedStrings" option.

fixedStrings

public final GrepOptionSet_Fcilnvx fixedStrings

Option "--fixedStrings": Use fixed-strings matching instead of regular expressions. This is usually faster than the standard regexp version.

(This option is ignored if a pattern operand is specified instead of the regexp string).

The option "--fixedStrings" is equivalent to the "-F" option.

i

public final GrepOptionSet_Fcilnvx i

Option "-i": Match lines ignoring the case when comparing the strings, also known from Unix with its acronym 'i'.

The option "-i" is equivalent to the "--ignoreCase" option.

ignoreCase

public final GrepOptionSet_Fcilnvx ignoreCase

Option "--ignoreCase": Match lines ignoring the case when comparing the strings, also known from Unix with its acronym 'i'.

The option "--ignoreCase" is equivalent to the "-i" option.

v

public final GrepOptionSet_Fcilnvx v

Option "-v": Invert the match result, that is, a non-matching line is written to the output and a matching line is not. This option is also known from Unix with its acronym 'v'.

The option "-v" is equivalent to the "--invertMatch" option.

invertMatch

public final GrepOptionSet_Fcilnvx invertMatch

Option "--invertMatch": Invert the match result, that is, a non-matching line is written to the output and a matching line is not. This option is also known from Unix with its acronym 'v'.

The option "--invertMatch" is equivalent to the "-v" option.

n

public final GrepOptionSet_Fcilnvx n

Option "-n": Prefix each line of output with the line number within its input file.

The option "-n" is equivalent to the "--lineNumber" option.

lineNumber

public final GrepOptionSet_Fcilnvx lineNumber

Option "--lineNumber": Prefix each line of output with the line number within its input file.

The option "--lineNumber" is equivalent to the "-n" option.

l

public final GrepOptionSet_Fcilnvx l

Option "-l": Suppress normal output; instead print the name of each input file from which output would normally have been printed. The scanning will stop on the first match.

The option "-l" is equivalent to the "--matchingFiles" option.

matchingFiles

public final GrepOptionSet_Fcilnvx matchingFiles

Option "--matchingFiles": Suppress normal output; instead print the name of each input file from which output would normally have been printed. The scanning will stop on the first match.

The option "--matchingFiles" is equivalent to the "-l" option.

x

public final GrepOptionSet_Fcilnvx x

Option "-x": Select only those matches that exactly match the whole line excluding the terminating line ending.

(This option is ignored if a pattern operand is specified instead of the regexp string).

The option "-x" is equivalent to the "--wholeLine" option.

wholeLine

public final GrepOptionSet_Fcilnvx wholeLine

Option "--wholeLine": Select only those matches that exactly match the whole line excluding the terminating line ending.

(This option is ignored if a pattern operand is specified instead of the regexp string).

The option "--wholeLine" is equivalent to the "-x" option.

Constructor Detail

GrepOptionSets

public GrepOptionSets()