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#!/usr/bin/perl -w
# Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
# its contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# Used for helping remove extra blank lines from files when processing.
# see split-class for an example usage (or other scripts in bugzilla)
BEGIN {
use Exporter ();
our ($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
$VERSION = 1.00;
@ISA = qw(Exporter);
@EXPORT = qw(&resetSpacingHeuristics &isOnlyWhiteSpace &applySpacingHeuristicsAndPrint &setPreviousAllowedLine &setPreviousAllowedLine &printPendingEmptyLines &ignoringLine);
%EXPORT_TAGS = ();
@EXPORT_OK = ();
}
our @EXPORT_OK;
my $justFoundEmptyLine = 0;
my $previousLineWasDisallowed = 0;
my $previousAllowedLine = "";
my $pendingEmptyLines = "";
sub resetSpacingHeuristics
{
$justFoundEmptyLine = 0;
$previousLineWasDisallowed = 0;
$previousAllowedLine = "";
$pendingEmptyLines = "";
}
sub isOnlyWhiteSpace
{
my $line = shift;
my $isOnlyWhiteSpace = ($line =~ m/^\s+$/);
$pendingEmptyLines .= $line if ($isOnlyWhiteSpace);
return $isOnlyWhiteSpace;
}
sub applySpacingHeuristicsAndPrint
{
my ($out, $line) = @_;
printPendingEmptyLines($out, $line);
$previousLineWasDisallowed = 0;
print $out $line;
}
sub setPreviousAllowedLine
{
my $line = shift;
$previousAllowedLine = $line;
}
sub printPendingEmptyLines
{
my $out = shift;
my $line = shift;
if ($previousLineWasDisallowed) {
if (!($pendingEmptyLines eq "") && !($previousAllowedLine =~ m/{\s*$/) && !($line =~ m/^\s*}/)) {
$pendingEmptyLines = "\n";
} else {
$pendingEmptyLines = "";
}
}
print $out $pendingEmptyLines;
$pendingEmptyLines = "";
}
sub ignoringLine
{
# my $line = shift; # ignoring input argument
$previousLineWasDisallowed = 1;
}
1;
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