com.starteam.diff
Class BasicCompare

java.lang.Object
  com.starteam.diff.DiffCompare
      com.starteam.diff.BasicCompare

public final class BasicCompare
extends DiffCompare

BasicCompare is a implementation of the DiffCompare interface that can be used to compare two files with many different options. This class supports column masking (ignoring chars in a column), ignoring case and different white space ignore options. See also DiffOptions for case and whitespace options.

Field Summary

static int	COMPARE_EOL Compare EOL characters when comparing two lines.
static int	DIFF_B_WS A predfined flag for how Unix diff treats whitespace using the -b flag.
static int	DIFF_W_WS A predfined flag for how Unix diff treats whitespace using the -w flag.
static int	IGNORE_CASE Ignore case when comparing two lines.
static int	INTERIOR_WS_EQUIV Treat interior whitespace as equivalent to a single space character.
static int	INTERIOR_WS_IGNORE Ignore interior whitespace.
static int	LEADING_WS_EQUIV Treat leading whitespace as equivalent to a single space character.
static int	LEADING_WS_IGNORE Ignore leading whitespace.
static int	PVCS_WS A predfined flag for how PVCS ignores whitespace using -B option.
static int	TRAILING_WS_EQUIV Treat trialing whitespace as equivalent to a single space character.
static int	TRAILING_WS_IGNORE Ignore trialing whitespace.
static int	VSS_WS A predfined flag for how VSS, StarTeam 2.0 and WinDiff and Unix diff -w ignores whitespace.

Constructor Summary

BasicCompare()
Can be used for binary comparison.

BasicCompare(int flags, ColumnMask[] columnMask)
columnMask is an array of column numbers to ignore.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

LEADING_WS_IGNORE

public static final int LEADING_WS_IGNORE

Ignore leading whitespace.

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Constant Field Values

LEADING_WS_EQUIV

public static final int LEADING_WS_EQUIV

Treat leading whitespace as equivalent to a single space character.

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Constant Field Values

INTERIOR_WS_IGNORE

public static final int INTERIOR_WS_IGNORE

Ignore interior whitespace.

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Constant Field Values

INTERIOR_WS_EQUIV

public static final int INTERIOR_WS_EQUIV

Treat interior whitespace as equivalent to a single space character.

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Constant Field Values

TRAILING_WS_IGNORE

public static final int TRAILING_WS_IGNORE

Ignore trialing whitespace.

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Constant Field Values

TRAILING_WS_EQUIV

public static final int TRAILING_WS_EQUIV

Treat trialing whitespace as equivalent to a single space character.

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Constant Field Values

COMPARE_EOL

public static final int COMPARE_EOL

Compare EOL characters when comparing two lines.

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Constant Field Values

IGNORE_CASE

public static final int IGNORE_CASE

Ignore case when comparing two lines.

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Constant Field Values

PVCS_WS

public static final int PVCS_WS

A predfined flag for how PVCS ignores whitespace using -B option. PVCS ignores all whitespace at the begining and end of a line. Any whitespace in the interior is left alone. For example the following two strings would be considered equivalent: " Hi Mom " and "Hi Mom". It is defined as: (LEADING_WS_IGNORE | TRAILING_WS_IGNORE)

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Constant Field Values

VSS_WS

public static final int VSS_WS

A predfined flag for how VSS, StarTeam 2.0 and WinDiff and Unix diff -w ignores whitespace. All whitespace on a line is ignored. For example, the following two strings would be considered equivalent: " Hi Mom " and "HiMom". It is defined as: (LEADING_WS_IGNORE | INTERIOR_WS_IGNORE | TRAILING_WS_IGNORE)

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Constant Field Values

DIFF_W_WS

public static final int DIFF_W_WS

A predfined flag for how Unix diff treats whitespace using the -w flag. It ignored all whitespace on a line. It is defined as: (LEADING_WS_IGNORE | INTERIOR_WS_IGNORE | TRAILING_WS_IGNORE)

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Constant Field Values

DIFF_B_WS

public static final int DIFF_B_WS

A predfined flag for how Unix diff treats whitespace using the -b flag. It ignores all trailing whitespace and considers all interior whitespace to be equivalent. For example the line " Hi Mom " would match " Hi Mom" but not "Hi Mom". It is defined as: (LEADING_WS_EQUIV | INTERIOR_WS_EQUIV | TRAILING_WS_IGNORE)

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Constant Field Values

Constructor Detail

BasicCompare

public BasicCompare(int flags,
                    ColumnMask[] columnMask)

columnMask is an array of column numbers to ignore. It can be null.

Parameters:

flags - mask flags to apply

columnMask - an array of column masks

BasicCompare

public BasicCompare()

Can be used for binary comparison. Does no case folding, white space ignore nor column masking.