regexodus

Interface REFlags

All Known Implementing Classes:

Pattern, Term

public interface REFlags

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT All the following options turned off, EXCEPT UNICODE.
static int	DOTALL Affects the behaviour of dot(".") tag.
static int	IGNORE_CASE Pattern "a" matches both "a" and "A".
static int	IGNORE_SPACES Affects how the space characters are interpreted in the expression.
static int	MULTILINE Affects the behaviour of "^" and "$" tags.
static int	UNICODE Affects whether the predefined classes("\d","\s","\w",etc) in the expression are interpreted as belonging to Unicode.
static int	XML_SCHEMA Turns on the compatibility with XML Schema regular expressions.

Field Detail

DEFAULT

static final int DEFAULT

All the following options turned off, EXCEPT UNICODE. Unicode handling can be turned off with "-u" at the end of a flag string, or by simply specifying only the flags you want in a bitmask, like (REFlags.IGNORE_CASE | REFlags.MULTILINE | REFlags.DOTALL).
This behavior changed between the 0.1.1 and 0.1.2 release.

See Also:

Constant Field Values

IGNORE_CASE

static final int IGNORE_CASE

Pattern "a" matches both "a" and "A". Corresponds to "i" in Perl notation.

See Also:

Constant Field Values

MULTILINE

static final int MULTILINE

Affects the behaviour of "^" and "$" tags. When switched off:

• the "^" matches the beginning of the whole text;
• the "$" matches the end of the whole text, or just before the '\n' or "\r\n" at the end of text.

When switched on:

• the "^" additionally matches the line beginnings (that is just after the '\n');
• the "$" additionally matches the line ends (that is just before "\r\n" or '\n');

Corresponds to "m" in Perl notation.

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Constant Field Values

DOTALL

static final int DOTALL

Affects the behaviour of dot(".") tag. When switched off:

• the dot matches any character but EOLs('\r','\n');

When switched on:

• the dot matches any character, including EOLs.

This flag is sometimes referenced in regex tutorials as SINGLELINE, which confusingly seems opposite to MULTILINE, but in fact is orthogonal. Corresponds to "s" in Perl notation.

See Also:

Constant Field Values

IGNORE_SPACES

static final int IGNORE_SPACES

Affects how the space characters are interpreted in the expression. When switched off:

• the spaces are interpreted literally;

When switched on:

• the spaces are ignored, allowing an expression to be slightly more readable.

Corresponds to "x" in Perl notation.

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Constant Field Values

UNICODE

static final int UNICODE

Affects whether the predefined classes("\d","\s","\w",etc) in the expression are interpreted as belonging to Unicode. When switched off:

• the predefined classes are interpreted as ASCII;

When switched on:

• the predefined classes are interpreted as Unicode categories;

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Constant Field Values

XML_SCHEMA

static final int XML_SCHEMA

Turns on the compatibility with XML Schema regular expressions.

See Also:

Constant Field Values